Merge tag 'usb-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB patches from Greg KH:
"Here's the big USB pull request for 3.15-rc1.
The normal set of patches, lots of controller driver updates, and a
smattering of individual USB driver updates as well.
All have been in linux-next for a while"
* tag 'usb-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (249 commits)
xhci: Transition maintainership to Mathias Nyman.
USB: disable reset-resume when USB_QUIRK_RESET is set
USB: unbind all interfaces before rebinding any
usb: phy: Add ulpi IDs for SMSC USB3320 and TI TUSB1210
usb: gadget: tcm_usb_gadget: stop format strings
usb: gadget: f_fs: add missing spinlock and mutex unlock
usb: gadget: composite: switch over to ERR_CAST()
usb: gadget: inode: switch over to memdup_user()
usb: gadget: f_subset: switch over to PTR_RET
usb: gadget: lpc32xx_udc: fix wrong clk_put() sequence
USB: keyspan: remove dead debugging code
USB: serial: add missing newlines to dev_<level> messages.
USB: serial: add missing braces
USB: serial: continue to write on errors
USB: serial: continue to read on errors
USB: serial: make bulk_out_size a lower limit
USB: cypress_m8: fix potential scheduling while atomic
devicetree: bindings: document lsi,zevio-usb
usb: chipidea: add support for USB OTG controller on LSI Zevio SoCs
usb: chipidea: imx: Use dev_name() for ci_hdrc name to distinguish USBs
...
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 2e6b832..e0cad44 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -2,10 +2,6 @@
# USB device configuration
#
-# These are unused now, remove them once they are no longer selected
-config USB_ARCH_HAS_OHCI
- bool
-
config USB_OHCI_BIG_ENDIAN_DESC
bool
@@ -17,18 +13,12 @@
default n if STB03xxx || PPC_MPC52xx
default y
-config USB_ARCH_HAS_EHCI
- bool
-
config USB_EHCI_BIG_ENDIAN_MMIO
bool
config USB_EHCI_BIG_ENDIAN_DESC
bool
-config USB_ARCH_HAS_XHCI
- bool
-
menuconfig USB_SUPPORT
bool "USB support"
depends on HAS_IOMEM
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index 7345d21..480bd4d 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -10,6 +10,7 @@
# Glue/Bridge layers go here
obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_msm.o
+obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_zevio.o
# PCI doesn't provide stubs, need to check
ifneq ($(CONFIG_PCI),)
diff --git a/drivers/usb/chipidea/bits.h b/drivers/usb/chipidea/bits.h
index a857131..83d06c145 100644
--- a/drivers/usb/chipidea/bits.h
+++ b/drivers/usb/chipidea/bits.h
@@ -50,12 +50,14 @@
#define PORTSC_PTC (0x0FUL << 16)
#define PORTSC_PHCD(d) ((d) ? BIT(22) : BIT(23))
/* PTS and PTW for non lpm version only */
+#define PORTSC_PFSC BIT(24)
#define PORTSC_PTS(d) \
(u32)((((d) & 0x3) << 30) | (((d) & 0x4) ? BIT(25) : 0))
#define PORTSC_PTW BIT(28)
#define PORTSC_STS BIT(29)
/* DEVLC */
+#define DEVLC_PFSC BIT(23)
#define DEVLC_PSPD (0x03UL << 25)
#define DEVLC_PSPD_HS (0x02UL << 25)
#define DEVLC_PTW BIT(27)
diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 88b80f7..e206406 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -196,8 +196,6 @@
struct ci_hdrc_platform_data *platdata;
int vbus_active;
- /* FIXME: some day, we'll not use global phy */
- bool global_phy;
struct usb_phy *transceiver;
struct usb_hcd *hcd;
struct dentry *debugfs;
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index c00f772..2e58f8d 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -96,7 +96,7 @@
{
struct ci_hdrc_imx_data *data;
struct ci_hdrc_platform_data pdata = {
- .name = "ci_hdrc_imx",
+ .name = dev_name(&pdev->dev),
.capoffset = DEF_CAPOFFSET,
.flags = CI_HDRC_REQUIRE_TRANSCEIVER |
CI_HDRC_DISABLE_STREAMING,
diff --git a/drivers/usb/chipidea/ci_hdrc_zevio.c b/drivers/usb/chipidea/ci_hdrc_zevio.c
new file mode 100644
index 0000000..3bf6489
--- /dev/null
+++ b/drivers/usb/chipidea/ci_hdrc_zevio.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ * Based off drivers/usb/chipidea/ci_hdrc_msm.c
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/chipidea.h>
+
+#include "ci.h"
+
+static struct ci_hdrc_platform_data ci_hdrc_zevio_platdata = {
+ .name = "ci_hdrc_zevio",
+ .flags = CI_HDRC_REGS_SHARED,
+ .capoffset = DEF_CAPOFFSET,
+};
+
+static int ci_hdrc_zevio_probe(struct platform_device *pdev)
+{
+ struct platform_device *ci_pdev;
+
+ dev_dbg(&pdev->dev, "ci_hdrc_zevio_probe\n");
+
+ ci_pdev = ci_hdrc_add_device(&pdev->dev,
+ pdev->resource, pdev->num_resources,
+ &ci_hdrc_zevio_platdata);
+
+ if (IS_ERR(ci_pdev)) {
+ dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
+ return PTR_ERR(ci_pdev);
+ }
+
+ platform_set_drvdata(pdev, ci_pdev);
+
+ return 0;
+}
+
+static int ci_hdrc_zevio_remove(struct platform_device *pdev)
+{
+ struct platform_device *ci_pdev = platform_get_drvdata(pdev);
+
+ ci_hdrc_remove_device(ci_pdev);
+
+ return 0;
+}
+
+static const struct of_device_id ci_hdrc_zevio_dt_ids[] = {
+ { .compatible = "lsi,zevio-usb", },
+ { /* sentinel */ }
+};
+
+static struct platform_driver ci_hdrc_zevio_driver = {
+ .probe = ci_hdrc_zevio_probe,
+ .remove = ci_hdrc_zevio_remove,
+ .driver = {
+ .name = "zevio_usb",
+ .owner = THIS_MODULE,
+ .of_match_table = ci_hdrc_zevio_dt_ids,
+ },
+};
+
+MODULE_DEVICE_TABLE(of, ci_hdrc_zevio_dt_ids);
+module_platform_driver(ci_hdrc_zevio_driver);
+
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 33f22bc..ca6831c 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -64,6 +64,7 @@
#include <linux/usb/otg.h>
#include <linux/usb/chipidea.h>
#include <linux/usb/of.h>
+#include <linux/of.h>
#include <linux/phy.h>
#include <linux/regulator/consumer.h>
@@ -298,6 +299,13 @@
if (ci->platdata->flags & CI_HDRC_DISABLE_STREAMING)
hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS);
+ if (ci->platdata->flags & CI_HDRC_FORCE_FULLSPEED) {
+ if (ci->hw_bank.lpm)
+ hw_write(ci, OP_DEVLC, DEVLC_PFSC, DEVLC_PFSC);
+ else
+ hw_write(ci, OP_PORTSC, PORTSC_PFSC, PORTSC_PFSC);
+ }
+
/* USBMODE should be configured step by step */
hw_write(ci, OP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE);
hw_write(ci, OP_USBMODE, USBMODE_CM, mode);
@@ -412,6 +420,9 @@
}
}
+ if (of_usb_get_maximum_speed(dev->of_node) == USB_SPEED_FULL)
+ platdata->flags |= CI_HDRC_FORCE_FULLSPEED;
+
return 0;
}
@@ -496,33 +507,6 @@
}
}
-static int ci_usb_phy_init(struct ci_hdrc *ci)
-{
- if (ci->platdata->phy) {
- ci->transceiver = ci->platdata->phy;
- return usb_phy_init(ci->transceiver);
- } else {
- ci->global_phy = true;
- ci->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
- if (IS_ERR(ci->transceiver))
- ci->transceiver = NULL;
-
- return 0;
- }
-}
-
-static void ci_usb_phy_destroy(struct ci_hdrc *ci)
-{
- if (!ci->transceiver)
- return;
-
- otg_set_peripheral(ci->transceiver->otg, NULL);
- if (ci->global_phy)
- usb_put_phy(ci->transceiver);
- else
- usb_phy_shutdown(ci->transceiver);
-}
-
static int ci_hdrc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -532,7 +516,7 @@
int ret;
enum usb_dr_mode dr_mode;
- if (!dev->platform_data) {
+ if (!dev_get_platdata(dev)) {
dev_err(dev, "platform data missing\n");
return -ENODEV;
}
@@ -549,7 +533,7 @@
}
ci->dev = dev;
- ci->platdata = dev->platform_data;
+ ci->platdata = dev_get_platdata(dev);
ci->imx28_write_fix = !!(ci->platdata->flags &
CI_HDRC_IMX28_WRITE_FIX);
@@ -561,7 +545,26 @@
hw_phymode_configure(ci);
- ret = ci_usb_phy_init(ci);
+ if (ci->platdata->phy)
+ ci->transceiver = ci->platdata->phy;
+ else
+ ci->transceiver = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
+
+ if (IS_ERR(ci->transceiver)) {
+ ret = PTR_ERR(ci->transceiver);
+ /*
+ * if -ENXIO is returned, it means PHY layer wasn't
+ * enabled, so it makes no sense to return -EPROBE_DEFER
+ * in that case, since no PHY driver will ever probe.
+ */
+ if (ret == -ENXIO)
+ return ret;
+
+ dev_err(dev, "no usb2 phy configured\n");
+ return -EPROBE_DEFER;
+ }
+
+ ret = usb_phy_init(ci->transceiver);
if (ret) {
dev_err(dev, "unable to init phy: %d\n", ret);
return ret;
@@ -572,8 +575,8 @@
ci->irq = platform_get_irq(pdev, 0);
if (ci->irq < 0) {
dev_err(dev, "missing IRQ\n");
- ret = -ENODEV;
- goto destroy_phy;
+ ret = ci->irq;
+ goto deinit_phy;
}
ci_get_otg_capable(ci);
@@ -590,23 +593,12 @@
ret = ci_hdrc_gadget_init(ci);
if (ret)
dev_info(dev, "doesn't support gadget\n");
- if (!ret && ci->transceiver) {
- ret = otg_set_peripheral(ci->transceiver->otg,
- &ci->gadget);
- /*
- * If we implement all USB functions using chipidea drivers,
- * it doesn't need to call above API, meanwhile, if we only
- * use gadget function, calling above API is useless.
- */
- if (ret && ret != -ENOTSUPP)
- goto destroy_phy;
- }
}
if (!ci->roles[CI_ROLE_HOST] && !ci->roles[CI_ROLE_GADGET]) {
dev_err(dev, "no supported roles\n");
ret = -ENODEV;
- goto destroy_phy;
+ goto deinit_phy;
}
if (ci->is_otg) {
@@ -663,8 +655,8 @@
free_irq(ci->irq, ci);
stop:
ci_role_destroy(ci);
-destroy_phy:
- ci_usb_phy_destroy(ci);
+deinit_phy:
+ usb_phy_shutdown(ci->transceiver);
return ret;
}
@@ -677,7 +669,8 @@
free_irq(ci->irq, ci);
ci_role_destroy(ci);
ci_hdrc_enter_lpm(ci, true);
- ci_usb_phy_destroy(ci);
+ usb_phy_shutdown(ci->transceiver);
+ kfree(ci->hw_bank.regmap);
return 0;
}
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 4ab2cb6..7739c64 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -178,19 +178,6 @@
}
/**
- * hw_test_and_clear_setup_status: test & clear setup status (execute without
- * interruption)
- * @n: endpoint number
- *
- * This function returns setup status
- */
-static int hw_test_and_clear_setup_status(struct ci_hdrc *ci, int n)
-{
- n = ep_to_bit(ci, n);
- return hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(n));
-}
-
-/**
* hw_ep_prime: primes endpoint (execute without interruption)
* @num: endpoint number
* @dir: endpoint direction
@@ -962,6 +949,156 @@
}
/**
+ * isr_setup_packet_handler: setup packet handler
+ * @ci: UDC descriptor
+ *
+ * This function handles setup packet
+ */
+static void isr_setup_packet_handler(struct ci_hdrc *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
+{
+ struct ci_hw_ep *hwep = &ci->ci_hw_ep[0];
+ struct usb_ctrlrequest req;
+ int type, num, dir, err = -EINVAL;
+ u8 tmode = 0;
+
+ /*
+ * Flush data and handshake transactions of previous
+ * setup packet.
+ */
+ _ep_nuke(ci->ep0out);
+ _ep_nuke(ci->ep0in);
+
+ /* read_setup_packet */
+ do {
+ hw_test_and_set_setup_guard(ci);
+ memcpy(&req, &hwep->qh.ptr->setup, sizeof(req));
+ } while (!hw_test_and_clear_setup_guard(ci));
+
+ type = req.bRequestType;
+
+ ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
+
+ switch (req.bRequest) {
+ case USB_REQ_CLEAR_FEATURE:
+ if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
+ le16_to_cpu(req.wValue) ==
+ USB_ENDPOINT_HALT) {
+ if (req.wLength != 0)
+ break;
+ num = le16_to_cpu(req.wIndex);
+ dir = num & USB_ENDPOINT_DIR_MASK;
+ num &= USB_ENDPOINT_NUMBER_MASK;
+ if (dir) /* TX */
+ num += ci->hw_ep_max / 2;
+ if (!ci->ci_hw_ep[num].wedge) {
+ spin_unlock(&ci->lock);
+ err = usb_ep_clear_halt(
+ &ci->ci_hw_ep[num].ep);
+ spin_lock(&ci->lock);
+ if (err)
+ break;
+ }
+ err = isr_setup_status_phase(ci);
+ } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
+ le16_to_cpu(req.wValue) ==
+ USB_DEVICE_REMOTE_WAKEUP) {
+ if (req.wLength != 0)
+ break;
+ ci->remote_wakeup = 0;
+ err = isr_setup_status_phase(ci);
+ } else {
+ goto delegate;
+ }
+ break;
+ case USB_REQ_GET_STATUS:
+ if (type != (USB_DIR_IN|USB_RECIP_DEVICE) &&
+ type != (USB_DIR_IN|USB_RECIP_ENDPOINT) &&
+ type != (USB_DIR_IN|USB_RECIP_INTERFACE))
+ goto delegate;
+ if (le16_to_cpu(req.wLength) != 2 ||
+ le16_to_cpu(req.wValue) != 0)
+ break;
+ err = isr_get_status_response(ci, &req);
+ break;
+ case USB_REQ_SET_ADDRESS:
+ if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
+ goto delegate;
+ if (le16_to_cpu(req.wLength) != 0 ||
+ le16_to_cpu(req.wIndex) != 0)
+ break;
+ ci->address = (u8)le16_to_cpu(req.wValue);
+ ci->setaddr = true;
+ err = isr_setup_status_phase(ci);
+ break;
+ case USB_REQ_SET_FEATURE:
+ if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
+ le16_to_cpu(req.wValue) ==
+ USB_ENDPOINT_HALT) {
+ if (req.wLength != 0)
+ break;
+ num = le16_to_cpu(req.wIndex);
+ dir = num & USB_ENDPOINT_DIR_MASK;
+ num &= USB_ENDPOINT_NUMBER_MASK;
+ if (dir) /* TX */
+ num += ci->hw_ep_max / 2;
+
+ spin_unlock(&ci->lock);
+ err = usb_ep_set_halt(&ci->ci_hw_ep[num].ep);
+ spin_lock(&ci->lock);
+ if (!err)
+ isr_setup_status_phase(ci);
+ } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
+ if (req.wLength != 0)
+ break;
+ switch (le16_to_cpu(req.wValue)) {
+ case USB_DEVICE_REMOTE_WAKEUP:
+ ci->remote_wakeup = 1;
+ err = isr_setup_status_phase(ci);
+ break;
+ case USB_DEVICE_TEST_MODE:
+ tmode = le16_to_cpu(req.wIndex) >> 8;
+ switch (tmode) {
+ case TEST_J:
+ case TEST_K:
+ case TEST_SE0_NAK:
+ case TEST_PACKET:
+ case TEST_FORCE_EN:
+ ci->test_mode = tmode;
+ err = isr_setup_status_phase(
+ ci);
+ break;
+ default:
+ break;
+ }
+ default:
+ goto delegate;
+ }
+ } else {
+ goto delegate;
+ }
+ break;
+ default:
+delegate:
+ if (req.wLength == 0) /* no data phase */
+ ci->ep0_dir = TX;
+
+ spin_unlock(&ci->lock);
+ err = ci->driver->setup(&ci->gadget, &req);
+ spin_lock(&ci->lock);
+ break;
+ }
+
+ if (err < 0) {
+ spin_unlock(&ci->lock);
+ if (usb_ep_set_halt(&hwep->ep))
+ dev_err(ci->dev, "error: ep_set_halt\n");
+ spin_lock(&ci->lock);
+ }
+}
+
+/**
* isr_tr_complete_handler: transaction complete interrupt handler
* @ci: UDC descriptor
*
@@ -972,12 +1109,10 @@
__acquires(ci->lock)
{
unsigned i;
- u8 tmode = 0;
+ int err;
for (i = 0; i < ci->hw_ep_max; i++) {
struct ci_hw_ep *hwep = &ci->ci_hw_ep[i];
- int type, num, dir, err = -EINVAL;
- struct usb_ctrlrequest req;
if (hwep->ep.desc == NULL)
continue; /* not configured */
@@ -997,148 +1132,10 @@
}
}
- if (hwep->type != USB_ENDPOINT_XFER_CONTROL ||
- !hw_test_and_clear_setup_status(ci, i))
- continue;
-
- if (i != 0) {
- dev_warn(ci->dev, "ctrl traffic at endpoint %d\n", i);
- continue;
- }
-
- /*
- * Flush data and handshake transactions of previous
- * setup packet.
- */
- _ep_nuke(ci->ep0out);
- _ep_nuke(ci->ep0in);
-
- /* read_setup_packet */
- do {
- hw_test_and_set_setup_guard(ci);
- memcpy(&req, &hwep->qh.ptr->setup, sizeof(req));
- } while (!hw_test_and_clear_setup_guard(ci));
-
- type = req.bRequestType;
-
- ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
-
- switch (req.bRequest) {
- case USB_REQ_CLEAR_FEATURE:
- if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
- le16_to_cpu(req.wValue) ==
- USB_ENDPOINT_HALT) {
- if (req.wLength != 0)
- break;
- num = le16_to_cpu(req.wIndex);
- dir = num & USB_ENDPOINT_DIR_MASK;
- num &= USB_ENDPOINT_NUMBER_MASK;
- if (dir) /* TX */
- num += ci->hw_ep_max/2;
- if (!ci->ci_hw_ep[num].wedge) {
- spin_unlock(&ci->lock);
- err = usb_ep_clear_halt(
- &ci->ci_hw_ep[num].ep);
- spin_lock(&ci->lock);
- if (err)
- break;
- }
- err = isr_setup_status_phase(ci);
- } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
- le16_to_cpu(req.wValue) ==
- USB_DEVICE_REMOTE_WAKEUP) {
- if (req.wLength != 0)
- break;
- ci->remote_wakeup = 0;
- err = isr_setup_status_phase(ci);
- } else {
- goto delegate;
- }
- break;
- case USB_REQ_GET_STATUS:
- if (type != (USB_DIR_IN|USB_RECIP_DEVICE) &&
- type != (USB_DIR_IN|USB_RECIP_ENDPOINT) &&
- type != (USB_DIR_IN|USB_RECIP_INTERFACE))
- goto delegate;
- if (le16_to_cpu(req.wLength) != 2 ||
- le16_to_cpu(req.wValue) != 0)
- break;
- err = isr_get_status_response(ci, &req);
- break;
- case USB_REQ_SET_ADDRESS:
- if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
- goto delegate;
- if (le16_to_cpu(req.wLength) != 0 ||
- le16_to_cpu(req.wIndex) != 0)
- break;
- ci->address = (u8)le16_to_cpu(req.wValue);
- ci->setaddr = true;
- err = isr_setup_status_phase(ci);
- break;
- case USB_REQ_SET_FEATURE:
- if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
- le16_to_cpu(req.wValue) ==
- USB_ENDPOINT_HALT) {
- if (req.wLength != 0)
- break;
- num = le16_to_cpu(req.wIndex);
- dir = num & USB_ENDPOINT_DIR_MASK;
- num &= USB_ENDPOINT_NUMBER_MASK;
- if (dir) /* TX */
- num += ci->hw_ep_max/2;
-
- spin_unlock(&ci->lock);
- err = usb_ep_set_halt(&ci->ci_hw_ep[num].ep);
- spin_lock(&ci->lock);
- if (!err)
- isr_setup_status_phase(ci);
- } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
- if (req.wLength != 0)
- break;
- switch (le16_to_cpu(req.wValue)) {
- case USB_DEVICE_REMOTE_WAKEUP:
- ci->remote_wakeup = 1;
- err = isr_setup_status_phase(ci);
- break;
- case USB_DEVICE_TEST_MODE:
- tmode = le16_to_cpu(req.wIndex) >> 8;
- switch (tmode) {
- case TEST_J:
- case TEST_K:
- case TEST_SE0_NAK:
- case TEST_PACKET:
- case TEST_FORCE_EN:
- ci->test_mode = tmode;
- err = isr_setup_status_phase(
- ci);
- break;
- default:
- break;
- }
- default:
- goto delegate;
- }
- } else {
- goto delegate;
- }
- break;
- default:
-delegate:
- if (req.wLength == 0) /* no data phase */
- ci->ep0_dir = TX;
-
- spin_unlock(&ci->lock);
- err = ci->driver->setup(&ci->gadget, &req);
- spin_lock(&ci->lock);
- break;
- }
-
- if (err < 0) {
- spin_unlock(&ci->lock);
- if (usb_ep_set_halt(&hwep->ep))
- dev_err(ci->dev, "error: ep_set_halt\n");
- spin_lock(&ci->lock);
- }
+ /* Only handle setup packet below */
+ if (i == 0 &&
+ hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(0)))
+ isr_setup_packet_handler(ci);
}
}
@@ -1193,6 +1190,11 @@
hwep->qh.ptr->td.next |= cpu_to_le32(TD_TERMINATE); /* needed? */
+ if (hwep->num != 0 && hwep->type == USB_ENDPOINT_XFER_CONTROL) {
+ dev_err(hwep->ci->dev, "Set control xfer at non-ep0\n");
+ retval = -EINVAL;
+ }
+
/*
* Enable endpoints in the HW other than ep0 as ep0
* is always enabled
@@ -1837,12 +1839,6 @@
dma_pool_destroy(ci->td_pool);
dma_pool_destroy(ci->qh_pool);
-
- if (ci->transceiver) {
- otg_set_peripheral(ci->transceiver->otg, NULL);
- if (ci->global_phy)
- usb_put_phy(ci->transceiver);
- }
}
static int udc_id_switch_for_device(struct ci_hdrc *ci)
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 062967c..1ab4df1 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -10,7 +10,6 @@
#define USB_MAXALTSETTING 128 /* Hard limit */
-#define USB_MAXENDPOINTS 30 /* Hard limit */
#define USB_MAXCONFIG 8 /* Arbitrary limit */
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 2a8afe6..257876e 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -769,6 +769,88 @@
return ret;
}
+static struct usb_host_endpoint *ep_to_host_endpoint(struct usb_device *dev,
+ unsigned char ep)
+{
+ if (ep & USB_ENDPOINT_DIR_MASK)
+ return dev->ep_in[ep & USB_ENDPOINT_NUMBER_MASK];
+ else
+ return dev->ep_out[ep & USB_ENDPOINT_NUMBER_MASK];
+}
+
+static int parse_usbdevfs_streams(struct usb_dev_state *ps,
+ struct usbdevfs_streams __user *streams,
+ unsigned int *num_streams_ret,
+ unsigned int *num_eps_ret,
+ struct usb_host_endpoint ***eps_ret,
+ struct usb_interface **intf_ret)
+{
+ unsigned int i, num_streams, num_eps;
+ struct usb_host_endpoint **eps;
+ struct usb_interface *intf = NULL;
+ unsigned char ep;
+ int ifnum, ret;
+
+ if (get_user(num_streams, &streams->num_streams) ||
+ get_user(num_eps, &streams->num_eps))
+ return -EFAULT;
+
+ if (num_eps < 1 || num_eps > USB_MAXENDPOINTS)
+ return -EINVAL;
+
+ /* The XHCI controller allows max 2 ^ 16 streams */
+ if (num_streams_ret && (num_streams < 2 || num_streams > 65536))
+ return -EINVAL;
+
+ eps = kmalloc(num_eps * sizeof(*eps), GFP_KERNEL);
+ if (!eps)
+ return -ENOMEM;
+
+ for (i = 0; i < num_eps; i++) {
+ if (get_user(ep, &streams->eps[i])) {
+ ret = -EFAULT;
+ goto error;
+ }
+ eps[i] = ep_to_host_endpoint(ps->dev, ep);
+ if (!eps[i]) {
+ ret = -EINVAL;
+ goto error;
+ }
+
+ /* usb_alloc/free_streams operate on an usb_interface */
+ ifnum = findintfep(ps->dev, ep);
+ if (ifnum < 0) {
+ ret = ifnum;
+ goto error;
+ }
+
+ if (i == 0) {
+ ret = checkintf(ps, ifnum);
+ if (ret < 0)
+ goto error;
+ intf = usb_ifnum_to_if(ps->dev, ifnum);
+ } else {
+ /* Verify all eps belong to the same interface */
+ if (ifnum != intf->altsetting->desc.bInterfaceNumber) {
+ ret = -EINVAL;
+ goto error;
+ }
+ }
+ }
+
+ if (num_streams_ret)
+ *num_streams_ret = num_streams;
+ *num_eps_ret = num_eps;
+ *eps_ret = eps;
+ *intf_ret = intf;
+
+ return 0;
+
+error:
+ kfree(eps);
+ return ret;
+}
+
static int match_devt(struct device *dev, void *data)
{
return dev->devt == (dev_t) (unsigned long) data;
@@ -1043,6 +1125,20 @@
return ret;
}
+static void check_reset_of_active_ep(struct usb_device *udev,
+ unsigned int epnum, char *ioctl_name)
+{
+ struct usb_host_endpoint **eps;
+ struct usb_host_endpoint *ep;
+
+ eps = (epnum & USB_DIR_IN) ? udev->ep_in : udev->ep_out;
+ ep = eps[epnum & 0x0f];
+ if (ep && !list_empty(&ep->urb_list))
+ dev_warn(&udev->dev, "Process %d (%s) called USBDEVFS_%s for active endpoint 0x%02x\n",
+ task_pid_nr(current), current->comm,
+ ioctl_name, epnum);
+}
+
static int proc_resetep(struct usb_dev_state *ps, void __user *arg)
{
unsigned int ep;
@@ -1056,6 +1152,7 @@
ret = checkintf(ps, ret);
if (ret)
return ret;
+ check_reset_of_active_ep(ps->dev, ep, "RESETEP");
usb_reset_endpoint(ps->dev, ep);
return 0;
}
@@ -1074,6 +1171,7 @@
ret = checkintf(ps, ret);
if (ret)
return ret;
+ check_reset_of_active_ep(ps->dev, ep, "CLEAR_HALT");
if (ep & USB_DIR_IN)
pipe = usb_rcvbulkpipe(ps->dev, ep & 0x7f);
else
@@ -1127,6 +1225,9 @@
return -EFAULT;
if ((ret = checkintf(ps, setintf.interface)))
return ret;
+
+ destroy_async_on_interface(ps, setintf.interface);
+
return usb_set_interface(ps->dev, setintf.interface,
setintf.altsetting);
}
@@ -1189,6 +1290,8 @@
struct usb_ctrlrequest *dr = NULL;
unsigned int u, totlen, isofrmlen;
int i, ret, is_in, num_sgs = 0, ifnum = -1;
+ int number_of_packets = 0;
+ unsigned int stream_id = 0;
void *buf;
if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP |
@@ -1209,15 +1312,10 @@
if (ret)
return ret;
}
- if ((uurb->endpoint & USB_ENDPOINT_DIR_MASK) != 0) {
- is_in = 1;
- ep = ps->dev->ep_in[uurb->endpoint & USB_ENDPOINT_NUMBER_MASK];
- } else {
- is_in = 0;
- ep = ps->dev->ep_out[uurb->endpoint & USB_ENDPOINT_NUMBER_MASK];
- }
+ ep = ep_to_host_endpoint(ps->dev, uurb->endpoint);
if (!ep)
return -ENOENT;
+ is_in = (uurb->endpoint & USB_ENDPOINT_DIR_MASK) != 0;
u = 0;
switch(uurb->type) {
@@ -1242,7 +1340,6 @@
le16_to_cpup(&dr->wIndex));
if (ret)
goto error;
- uurb->number_of_packets = 0;
uurb->buffer_length = le16_to_cpup(&dr->wLength);
uurb->buffer += 8;
if ((dr->bRequestType & USB_DIR_IN) && uurb->buffer_length) {
@@ -1272,17 +1369,17 @@
uurb->type = USBDEVFS_URB_TYPE_INTERRUPT;
goto interrupt_urb;
}
- uurb->number_of_packets = 0;
num_sgs = DIV_ROUND_UP(uurb->buffer_length, USB_SG_SIZE);
if (num_sgs == 1 || num_sgs > ps->dev->bus->sg_tablesize)
num_sgs = 0;
+ if (ep->streams)
+ stream_id = uurb->stream_id;
break;
case USBDEVFS_URB_TYPE_INTERRUPT:
if (!usb_endpoint_xfer_int(&ep->desc))
return -EINVAL;
interrupt_urb:
- uurb->number_of_packets = 0;
break;
case USBDEVFS_URB_TYPE_ISO:
@@ -1292,15 +1389,16 @@
return -EINVAL;
if (!usb_endpoint_xfer_isoc(&ep->desc))
return -EINVAL;
+ number_of_packets = uurb->number_of_packets;
isofrmlen = sizeof(struct usbdevfs_iso_packet_desc) *
- uurb->number_of_packets;
+ number_of_packets;
if (!(isopkt = kmalloc(isofrmlen, GFP_KERNEL)))
return -ENOMEM;
if (copy_from_user(isopkt, iso_frame_desc, isofrmlen)) {
ret = -EFAULT;
goto error;
}
- for (totlen = u = 0; u < uurb->number_of_packets; u++) {
+ for (totlen = u = 0; u < number_of_packets; u++) {
/*
* arbitrary limit need for USB 3.0
* bMaxBurst (0~15 allowed, 1~16 packets)
@@ -1331,7 +1429,7 @@
ret = -EFAULT;
goto error;
}
- as = alloc_async(uurb->number_of_packets);
+ as = alloc_async(number_of_packets);
if (!as) {
ret = -ENOMEM;
goto error;
@@ -1425,7 +1523,8 @@
as->urb->setup_packet = (unsigned char *)dr;
dr = NULL;
as->urb->start_frame = uurb->start_frame;
- as->urb->number_of_packets = uurb->number_of_packets;
+ as->urb->number_of_packets = number_of_packets;
+ as->urb->stream_id = stream_id;
if (uurb->type == USBDEVFS_URB_TYPE_ISO ||
ps->dev->speed == USB_SPEED_HIGH)
as->urb->interval = 1 << min(15, ep->desc.bInterval - 1);
@@ -1433,7 +1532,7 @@
as->urb->interval = ep->desc.bInterval;
as->urb->context = as;
as->urb->complete = async_completed;
- for (totlen = u = 0; u < uurb->number_of_packets; u++) {
+ for (totlen = u = 0; u < number_of_packets; u++) {
as->urb->iso_frame_desc[u].offset = totlen;
as->urb->iso_frame_desc[u].length = isopkt[u].length;
totlen += isopkt[u].length;
@@ -1983,6 +2082,45 @@
return claimintf(ps, dc.interface);
}
+static int proc_alloc_streams(struct usb_dev_state *ps, void __user *arg)
+{
+ unsigned num_streams, num_eps;
+ struct usb_host_endpoint **eps;
+ struct usb_interface *intf;
+ int r;
+
+ r = parse_usbdevfs_streams(ps, arg, &num_streams, &num_eps,
+ &eps, &intf);
+ if (r)
+ return r;
+
+ destroy_async_on_interface(ps,
+ intf->altsetting[0].desc.bInterfaceNumber);
+
+ r = usb_alloc_streams(intf, eps, num_eps, num_streams, GFP_KERNEL);
+ kfree(eps);
+ return r;
+}
+
+static int proc_free_streams(struct usb_dev_state *ps, void __user *arg)
+{
+ unsigned num_eps;
+ struct usb_host_endpoint **eps;
+ struct usb_interface *intf;
+ int r;
+
+ r = parse_usbdevfs_streams(ps, arg, NULL, &num_eps, &eps, &intf);
+ if (r)
+ return r;
+
+ destroy_async_on_interface(ps,
+ intf->altsetting[0].desc.bInterfaceNumber);
+
+ r = usb_free_streams(intf, eps, num_eps, GFP_KERNEL);
+ kfree(eps);
+ return r;
+}
+
/*
* NOTE: All requests here that have interface numbers as parameters
* are assuming that somehow the configuration has been prevented from
@@ -2159,6 +2297,12 @@
case USBDEVFS_DISCONNECT_CLAIM:
ret = proc_disconnect_claim(ps, p);
break;
+ case USBDEVFS_ALLOC_STREAMS:
+ ret = proc_alloc_streams(ps, p);
+ break;
+ case USBDEVFS_FREE_STREAMS:
+ ret = proc_free_streams(ps, p);
+ break;
}
usb_unlock_device(dev);
if (ret >= 0)
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index ab90a01..888881e 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -312,9 +312,9 @@
return error;
}
- id = usb_match_id(intf, driver->id_table);
+ id = usb_match_dynamic_id(intf, driver);
if (!id)
- id = usb_match_dynamic_id(intf, driver);
+ id = usb_match_id(intf, driver->id_table);
if (!id)
return error;
@@ -400,8 +400,9 @@
{
struct usb_driver *driver = to_usb_driver(dev->driver);
struct usb_interface *intf = to_usb_interface(dev);
+ struct usb_host_endpoint *ep, **eps = NULL;
struct usb_device *udev;
- int error, r, lpm_disable_error;
+ int i, j, error, r, lpm_disable_error;
intf->condition = USB_INTERFACE_UNBINDING;
@@ -425,6 +426,26 @@
driver->disconnect(intf);
usb_cancel_queued_reset(intf);
+ /* Free streams */
+ for (i = 0, j = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+ ep = &intf->cur_altsetting->endpoint[i];
+ if (ep->streams == 0)
+ continue;
+ if (j == 0) {
+ eps = kmalloc(USB_MAXENDPOINTS * sizeof(void *),
+ GFP_KERNEL);
+ if (!eps) {
+ dev_warn(dev, "oom, leaking streams\n");
+ break;
+ }
+ }
+ eps[j++] = ep;
+ }
+ if (j) {
+ usb_free_streams(intf, eps, j, GFP_KERNEL);
+ kfree(eps);
+ }
+
/* Reset other interface state.
* We cannot do a Set-Interface if the device is suspended or
* if it is prepared for a system sleep (since installing a new
@@ -990,8 +1011,7 @@
* it doesn't support pre_reset/post_reset/reset_resume or
* because it doesn't support suspend/resume.
*
- * The caller must hold @intf's device's lock, but not its pm_mutex
- * and not @intf->dev.sem.
+ * The caller must hold @intf's device's lock, but not @intf's lock.
*/
void usb_forced_unbind_intf(struct usb_interface *intf)
{
@@ -1004,16 +1024,37 @@
intf->needs_binding = 1;
}
+/*
+ * Unbind drivers for @udev's marked interfaces. These interfaces have
+ * the needs_binding flag set, for example by usb_resume_interface().
+ *
+ * The caller must hold @udev's device lock.
+ */
+static void unbind_marked_interfaces(struct usb_device *udev)
+{
+ struct usb_host_config *config;
+ int i;
+ struct usb_interface *intf;
+
+ config = udev->actconfig;
+ if (config) {
+ for (i = 0; i < config->desc.bNumInterfaces; ++i) {
+ intf = config->interface[i];
+ if (intf->dev.driver && intf->needs_binding)
+ usb_forced_unbind_intf(intf);
+ }
+ }
+}
+
/* Delayed forced unbinding of a USB interface driver and scan
* for rebinding.
*
- * The caller must hold @intf's device's lock, but not its pm_mutex
- * and not @intf->dev.sem.
+ * The caller must hold @intf's device's lock, but not @intf's lock.
*
* Note: Rebinds will be skipped if a system sleep transition is in
* progress and the PM "complete" callback hasn't occurred yet.
*/
-void usb_rebind_intf(struct usb_interface *intf)
+static void usb_rebind_intf(struct usb_interface *intf)
{
int rc;
@@ -1030,6 +1071,41 @@
}
}
+/*
+ * Rebind drivers to @udev's marked interfaces. These interfaces have
+ * the needs_binding flag set.
+ *
+ * The caller must hold @udev's device lock.
+ */
+static void rebind_marked_interfaces(struct usb_device *udev)
+{
+ struct usb_host_config *config;
+ int i;
+ struct usb_interface *intf;
+
+ config = udev->actconfig;
+ if (config) {
+ for (i = 0; i < config->desc.bNumInterfaces; ++i) {
+ intf = config->interface[i];
+ if (intf->needs_binding)
+ usb_rebind_intf(intf);
+ }
+ }
+}
+
+/*
+ * Unbind all of @udev's marked interfaces and then rebind all of them.
+ * This ordering is necessary because some drivers claim several interfaces
+ * when they are first probed.
+ *
+ * The caller must hold @udev's device lock.
+ */
+void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev)
+{
+ unbind_marked_interfaces(udev);
+ rebind_marked_interfaces(udev);
+}
+
#ifdef CONFIG_PM
/* Unbind drivers for @udev's interfaces that don't support suspend/resume
@@ -1059,43 +1135,6 @@
}
}
-/* Unbind drivers for @udev's interfaces that failed to support reset-resume.
- * These interfaces have the needs_binding flag set by usb_resume_interface().
- *
- * The caller must hold @udev's device lock.
- */
-static void unbind_no_reset_resume_drivers_interfaces(struct usb_device *udev)
-{
- struct usb_host_config *config;
- int i;
- struct usb_interface *intf;
-
- config = udev->actconfig;
- if (config) {
- for (i = 0; i < config->desc.bNumInterfaces; ++i) {
- intf = config->interface[i];
- if (intf->dev.driver && intf->needs_binding)
- usb_forced_unbind_intf(intf);
- }
- }
-}
-
-static void do_rebind_interfaces(struct usb_device *udev)
-{
- struct usb_host_config *config;
- int i;
- struct usb_interface *intf;
-
- config = udev->actconfig;
- if (config) {
- for (i = 0; i < config->desc.bNumInterfaces; ++i) {
- intf = config->interface[i];
- if (intf->needs_binding)
- usb_rebind_intf(intf);
- }
- }
-}
-
static int usb_suspend_device(struct usb_device *udev, pm_message_t msg)
{
struct usb_device_driver *udriver;
@@ -1420,7 +1459,7 @@
* whose needs_binding flag is set
*/
if (udev->state != USB_STATE_NOTATTACHED)
- do_rebind_interfaces(udev);
+ rebind_marked_interfaces(udev);
return 0;
}
@@ -1442,7 +1481,7 @@
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
- unbind_no_reset_resume_drivers_interfaces(udev);
+ unbind_marked_interfaces(udev);
}
/* Avoid PM error messages for devices disconnected while suspended
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 2518c32..9c4e292 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2049,7 +2049,7 @@
{
struct usb_hcd *hcd;
struct usb_device *dev;
- int i;
+ int i, ret;
dev = interface_to_usbdev(interface);
hcd = bus_to_hcd(dev->bus);
@@ -2058,13 +2058,24 @@
if (dev->speed != USB_SPEED_SUPER)
return -EINVAL;
- /* Streams only apply to bulk endpoints. */
- for (i = 0; i < num_eps; i++)
+ for (i = 0; i < num_eps; i++) {
+ /* Streams only apply to bulk endpoints. */
if (!usb_endpoint_xfer_bulk(&eps[i]->desc))
return -EINVAL;
+ /* Re-alloc is not allowed */
+ if (eps[i]->streams)
+ return -EINVAL;
+ }
- return hcd->driver->alloc_streams(hcd, dev, eps, num_eps,
+ ret = hcd->driver->alloc_streams(hcd, dev, eps, num_eps,
num_streams, mem_flags);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < num_eps; i++)
+ eps[i]->streams = ret;
+
+ return ret;
}
EXPORT_SYMBOL_GPL(usb_alloc_streams);
@@ -2078,8 +2089,7 @@
* Reverts a group of bulk endpoints back to not using stream IDs.
* Can fail if we are given bad arguments, or HCD is broken.
*
- * Return: On success, the number of allocated streams. On failure, a negative
- * error code.
+ * Return: 0 on success. On failure, a negative error code.
*/
int usb_free_streams(struct usb_interface *interface,
struct usb_host_endpoint **eps, unsigned int num_eps,
@@ -2087,19 +2097,26 @@
{
struct usb_hcd *hcd;
struct usb_device *dev;
- int i;
+ int i, ret;
dev = interface_to_usbdev(interface);
hcd = bus_to_hcd(dev->bus);
if (dev->speed != USB_SPEED_SUPER)
return -EINVAL;
- /* Streams only apply to bulk endpoints. */
+ /* Double-free is not allowed */
for (i = 0; i < num_eps; i++)
- if (!eps[i] || !usb_endpoint_xfer_bulk(&eps[i]->desc))
+ if (!eps[i] || !eps[i]->streams)
return -EINVAL;
- return hcd->driver->free_streams(hcd, dev, eps, num_eps, mem_flags);
+ ret = hcd->driver->free_streams(hcd, dev, eps, num_eps, mem_flags);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < num_eps; i++)
+ eps[i]->streams = 0;
+
+ return ret;
}
EXPORT_SYMBOL_GPL(usb_free_streams);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 6107358..090469e 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -141,19 +141,27 @@
return 0;
}
- /* All USB 3.0 must support LPM, but we need their max exit latency
- * information from the SuperSpeed Extended Capabilities BOS descriptor.
+ /*
+ * According to the USB 3.0 spec, all USB 3.0 devices must support LPM.
+ * However, there are some that don't, and they set the U1/U2 exit
+ * latencies to zero.
*/
if (!udev->bos->ss_cap) {
- dev_warn(&udev->dev, "No LPM exit latency info found. "
- "Power management will be impacted.\n");
+ dev_info(&udev->dev, "No LPM exit latency info found, disabling LPM.\n");
return 0;
}
- if (udev->parent->lpm_capable)
- return 1;
- dev_warn(&udev->dev, "Parent hub missing LPM exit latency info. "
- "Power management will be impacted.\n");
+ if (udev->bos->ss_cap->bU1devExitLat == 0 &&
+ udev->bos->ss_cap->bU2DevExitLat == 0) {
+ if (udev->parent)
+ dev_info(&udev->dev, "LPM exit latency is zeroed, disabling LPM.\n");
+ else
+ dev_info(&udev->dev, "We don't know the algorithms for LPM for this host, disabling LPM.\n");
+ return 0;
+ }
+
+ if (!udev->parent || udev->parent->lpm_capable)
+ return 1;
return 0;
}
@@ -499,7 +507,8 @@
changed++;
}
if (changed)
- schedule_delayed_work(&hub->leds, LED_CYCLE_PERIOD);
+ queue_delayed_work(system_power_efficient_wq,
+ &hub->leds, LED_CYCLE_PERIOD);
}
/* use a short timeout for hub/port status fetches */
@@ -1041,7 +1050,8 @@
if (type == HUB_INIT) {
delay = hub_power_on(hub, false);
INIT_DELAYED_WORK(&hub->init_work, hub_init_func2);
- schedule_delayed_work(&hub->init_work,
+ queue_delayed_work(system_power_efficient_wq,
+ &hub->init_work,
msecs_to_jiffies(delay));
/* Suppress autosuspend until init is done */
@@ -1195,7 +1205,8 @@
/* Don't do a long sleep inside a workqueue routine */
if (type == HUB_INIT2) {
INIT_DELAYED_WORK(&hub->init_work, hub_init_func3);
- schedule_delayed_work(&hub->init_work,
+ queue_delayed_work(system_power_efficient_wq,
+ &hub->init_work,
msecs_to_jiffies(delay));
return; /* Continues at init3: below */
} else {
@@ -1209,7 +1220,8 @@
if (status < 0)
dev_err(hub->intfdev, "activate --> %d\n", status);
if (hub->has_indicators && blinkenlights)
- schedule_delayed_work(&hub->leds, LED_CYCLE_PERIOD);
+ queue_delayed_work(system_power_efficient_wq,
+ &hub->leds, LED_CYCLE_PERIOD);
/* Scan all ports that need attention */
kick_khubd(hub);
@@ -3095,9 +3107,19 @@
* operation is carried out here, after the port has been
* resumed.
*/
- if (udev->reset_resume)
+ if (udev->reset_resume) {
+ /*
+ * If the device morphs or switches modes when it is reset,
+ * we don't want to perform a reset-resume. We'll fail the
+ * resume, which will cause a logical disconnect, and then
+ * the device will be rediscovered.
+ */
retry_reset_resume:
- status = usb_reset_and_verify_device(udev);
+ if (udev->quirks & USB_QUIRK_RESET)
+ status = -ENODEV;
+ else
+ status = usb_reset_and_verify_device(udev);
+ }
/* 10.5.4.5 says be sure devices in the tree are still there.
* For now let's assume the device didn't go crazy on resume,
@@ -3960,7 +3982,7 @@
connect_type = usb_get_hub_port_connect_type(udev->parent,
udev->portnum);
- if ((udev->bos->ext_cap->bmAttributes & USB_BESL_SUPPORT) ||
+ if ((udev->bos->ext_cap->bmAttributes & cpu_to_le32(USB_BESL_SUPPORT)) ||
connect_type == USB_PORT_CONNECT_TYPE_HARD_WIRED) {
udev->usb2_hw_lpm_allowed = 1;
usb_set_usb2_hardware_lpm(udev, 1);
@@ -4109,8 +4131,12 @@
did_new_scheme = true;
retval = hub_enable_device(udev);
- if (retval < 0)
+ if (retval < 0) {
+ dev_err(&udev->dev,
+ "hub failed to enable device, error %d\n",
+ retval);
goto fail;
+ }
#define GET_DESCRIPTOR_BUFSIZE 64
buf = kmalloc(GET_DESCRIPTOR_BUFSIZE, GFP_NOIO);
@@ -4313,7 +4339,8 @@
/* hub LEDs are probably harder to miss than syslog */
if (hub->has_indicators) {
hub->indicator[port1-1] = INDICATOR_GREEN_BLINK;
- schedule_delayed_work (&hub->leds, 0);
+ queue_delayed_work(system_power_efficient_wq,
+ &hub->leds, 0);
}
}
kfree(qual);
@@ -4542,7 +4569,9 @@
if (hub->has_indicators) {
hub->indicator[port1-1] =
INDICATOR_AMBER_BLINK;
- schedule_delayed_work (&hub->leds, 0);
+ queue_delayed_work(
+ system_power_efficient_wq,
+ &hub->leds, 0);
}
status = -ENOTCONN; /* Don't retry */
goto loop_disable;
@@ -4741,6 +4770,8 @@
/* deal with port status changes */
for (i = 1; i <= hdev->maxchild; i++) {
+ struct usb_device *udev = hub->ports[i - 1]->child;
+
if (test_bit(i, hub->busy_bits))
continue;
connect_change = test_bit(i, hub->change_bits);
@@ -4839,8 +4870,6 @@
*/
if (hub_port_warm_reset_required(hub, portstatus)) {
int status;
- struct usb_device *udev =
- hub->ports[i - 1]->child;
dev_dbg(hub_dev, "warm reset port %d\n", i);
if (!udev ||
@@ -4857,6 +4886,24 @@
usb_unlock_device(udev);
connect_change = 0;
}
+ /*
+ * On disconnect USB3 protocol ports transit from U0 to
+ * SS.Inactive to Rx.Detect. If this happens a warm-
+ * reset is not needed, but a (re)connect may happen
+ * before khubd runs and sees the disconnect, and the
+ * device may be an unknown state.
+ *
+ * If the port went through SS.Inactive without khubd
+ * seeing it the C_LINK_STATE change flag will be set,
+ * and we reset the dev to put it in a known state.
+ */
+ } else if (udev && hub_is_superspeed(hub->hdev) &&
+ (portchange & USB_PORT_STAT_C_LINK_STATE) &&
+ (portstatus & USB_PORT_STAT_CONNECTION)) {
+ usb_lock_device(udev);
+ usb_reset_device(udev);
+ usb_unlock_device(udev);
+ connect_change = 0;
}
if (connect_change)
@@ -5114,7 +5161,7 @@
struct usb_hcd *hcd = bus_to_hcd(udev->bus);
struct usb_device_descriptor descriptor = udev->descriptor;
struct usb_host_bos *bos;
- int i, ret = 0;
+ int i, j, ret = 0;
int port1 = udev->portnum;
if (udev->state == USB_STATE_NOTATTACHED ||
@@ -5240,6 +5287,9 @@
ret);
goto re_enumerate;
}
+ /* Resetting also frees any allocated streams */
+ for (j = 0; j < intf->cur_altsetting->desc.bNumEndpoints; j++)
+ intf->cur_altsetting->endpoint[j].streams = 0;
}
done:
@@ -5342,10 +5392,11 @@
else if (cintf->condition ==
USB_INTERFACE_BOUND)
rebind = 1;
+ if (rebind)
+ cintf->needs_binding = 1;
}
- if (ret == 0 && rebind)
- usb_rebind_intf(cintf);
}
+ usb_unbind_and_rebind_marked_interfaces(udev);
}
usb_autosuspend_device(udev);
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 08d95e9..3cdcd0a 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1293,8 +1293,7 @@
struct usb_interface *iface;
struct usb_host_interface *alt;
struct usb_hcd *hcd = bus_to_hcd(dev->bus);
- int ret;
- int manual = 0;
+ int i, ret, manual = 0;
unsigned int epaddr;
unsigned int pipe;
@@ -1329,6 +1328,10 @@
mutex_unlock(hcd->bandwidth_mutex);
return -ENOMEM;
}
+ /* Changing alt-setting also frees any allocated streams */
+ for (i = 0; i < iface->cur_altsetting->desc.bNumEndpoints; i++)
+ iface->cur_altsetting->endpoint[i].streams = 0;
+
ret = usb_hcd_alloc_bandwidth(dev, NULL, iface->cur_altsetting, alt);
if (ret < 0) {
dev_info(&dev->dev, "Not enough bandwidth for altsetting %d\n",
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index a875328..75bf649 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -55,7 +55,7 @@
extern int usb_match_device(struct usb_device *dev,
const struct usb_device_id *id);
extern void usb_forced_unbind_intf(struct usb_interface *intf);
-extern void usb_rebind_intf(struct usb_interface *intf);
+extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev);
extern void usb_hub_release_all_ports(struct usb_device *hdev,
struct usb_dev_state *owner);
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index 8205799..c93918b 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -72,6 +72,26 @@
}
/**
+ * dwc2_handle_usb_port_intr - handles OTG PRTINT interrupts.
+ * When the PRTINT interrupt fires, there are certain status bits in the Host
+ * Port that needs to get cleared.
+ *
+ * @hsotg: Programming view of DWC_otg controller
+ */
+static void dwc2_handle_usb_port_intr(struct dwc2_hsotg *hsotg)
+{
+ u32 hprt0 = readl(hsotg->regs + HPRT0);
+
+ if (hprt0 & HPRT0_ENACHG) {
+ hprt0 &= ~HPRT0_ENA;
+ writel(hprt0, hsotg->regs + HPRT0);
+ }
+
+ /* Clear interrupt */
+ writel(GINTSTS_PRTINT, hsotg->regs + GINTSTS);
+}
+
+/**
* dwc2_handle_mode_mismatch_intr() - Logs a mode mismatch warning message
*
* @hsotg: Programming view of DWC_otg controller
@@ -479,9 +499,8 @@
if (dwc2_is_device_mode(hsotg)) {
dev_dbg(hsotg->dev,
" --Port interrupt received in Device mode--\n");
- gintsts = GINTSTS_PRTINT;
- writel(gintsts, hsotg->regs + GINTSTS);
- retval = 1;
+ dwc2_handle_usb_port_intr(hsotg);
+ retval = IRQ_HANDLED;
}
}
diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c
index 012f17e..47b9eb5 100644
--- a/drivers/usb/dwc2/hcd_intr.c
+++ b/drivers/usb/dwc2/hcd_intr.c
@@ -975,8 +975,8 @@
struct dwc2_qtd *qtd)
{
struct dwc2_hcd_urb *urb = qtd->urb;
- int pipe_type = dwc2_hcd_get_pipe_type(&urb->pipe_info);
enum dwc2_halt_status halt_status = DWC2_HC_XFER_COMPLETE;
+ int pipe_type;
int urb_xfer_done;
if (dbg_hc(chan))
@@ -984,6 +984,11 @@
"--Host Channel %d Interrupt: Transfer Complete--\n",
chnum);
+ if (!urb)
+ goto handle_xfercomp_done;
+
+ pipe_type = dwc2_hcd_get_pipe_type(&urb->pipe_info);
+
if (hsotg->core_params->dma_desc_enable > 0) {
dwc2_hcd_complete_xfer_ddma(hsotg, chan, chnum, halt_status);
if (pipe_type == USB_ENDPOINT_XFER_ISOC)
@@ -1005,9 +1010,6 @@
}
}
- if (!urb)
- goto handle_xfercomp_done;
-
/* Update the QTD and URB states */
switch (pipe_type) {
case USB_ENDPOINT_XFER_CONTROL:
@@ -1105,7 +1107,7 @@
struct dwc2_qtd *qtd)
{
struct dwc2_hcd_urb *urb = qtd->urb;
- int pipe_type = dwc2_hcd_get_pipe_type(&urb->pipe_info);
+ int pipe_type;
dev_dbg(hsotg->dev, "--Host Channel %d Interrupt: STALL Received--\n",
chnum);
@@ -1119,6 +1121,8 @@
if (!urb)
goto handle_stall_halt;
+ pipe_type = dwc2_hcd_get_pipe_type(&urb->pipe_info);
+
if (pipe_type == USB_ENDPOINT_XFER_CONTROL)
dwc2_host_complete(hsotg, qtd, -EPIPE);
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index a49217a..d001417 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -61,9 +61,10 @@
* dwc3_core_soft_reset - Issues core soft reset and PHY reset
* @dwc: pointer to our context structure
*/
-static void dwc3_core_soft_reset(struct dwc3 *dwc)
+static int dwc3_core_soft_reset(struct dwc3 *dwc)
{
u32 reg;
+ int ret;
/* Before Resetting PHY, put Core in Reset */
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
@@ -82,6 +83,15 @@
usb_phy_init(dwc->usb2_phy);
usb_phy_init(dwc->usb3_phy);
+ ret = phy_init(dwc->usb2_generic_phy);
+ if (ret < 0)
+ return ret;
+
+ ret = phy_init(dwc->usb3_generic_phy);
+ if (ret < 0) {
+ phy_exit(dwc->usb2_generic_phy);
+ return ret;
+ }
mdelay(100);
/* Clear USB3 PHY reset */
@@ -100,6 +110,8 @@
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
reg &= ~DWC3_GCTL_CORESOFTRESET;
dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+
+ return 0;
}
/**
@@ -242,6 +254,90 @@
}
}
+static int dwc3_alloc_scratch_buffers(struct dwc3 *dwc)
+{
+ if (!dwc->has_hibernation)
+ return 0;
+
+ if (!dwc->nr_scratch)
+ return 0;
+
+ dwc->scratchbuf = kmalloc_array(dwc->nr_scratch,
+ DWC3_SCRATCHBUF_SIZE, GFP_KERNEL);
+ if (!dwc->scratchbuf)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int dwc3_setup_scratch_buffers(struct dwc3 *dwc)
+{
+ dma_addr_t scratch_addr;
+ u32 param;
+ int ret;
+
+ if (!dwc->has_hibernation)
+ return 0;
+
+ if (!dwc->nr_scratch)
+ return 0;
+
+ /* should never fall here */
+ if (!WARN_ON(dwc->scratchbuf))
+ return 0;
+
+ scratch_addr = dma_map_single(dwc->dev, dwc->scratchbuf,
+ dwc->nr_scratch * DWC3_SCRATCHBUF_SIZE,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(dwc->dev, scratch_addr)) {
+ dev_err(dwc->dev, "failed to map scratch buffer\n");
+ ret = -EFAULT;
+ goto err0;
+ }
+
+ dwc->scratch_addr = scratch_addr;
+
+ param = lower_32_bits(scratch_addr);
+
+ ret = dwc3_send_gadget_generic_command(dwc,
+ DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO, param);
+ if (ret < 0)
+ goto err1;
+
+ param = upper_32_bits(scratch_addr);
+
+ ret = dwc3_send_gadget_generic_command(dwc,
+ DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI, param);
+ if (ret < 0)
+ goto err1;
+
+ return 0;
+
+err1:
+ dma_unmap_single(dwc->dev, dwc->scratch_addr, dwc->nr_scratch *
+ DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL);
+
+err0:
+ return ret;
+}
+
+static void dwc3_free_scratch_buffers(struct dwc3 *dwc)
+{
+ if (!dwc->has_hibernation)
+ return;
+
+ if (!dwc->nr_scratch)
+ return;
+
+ /* should never fall here */
+ if (!WARN_ON(dwc->scratchbuf))
+ return;
+
+ dma_unmap_single(dwc->dev, dwc->scratch_addr, dwc->nr_scratch *
+ DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL);
+ kfree(dwc->scratchbuf);
+}
+
static void dwc3_core_num_eps(struct dwc3 *dwc)
{
struct dwc3_hwparams *parms = &dwc->hwparams;
@@ -277,6 +373,7 @@
static int dwc3_core_init(struct dwc3 *dwc)
{
unsigned long timeout;
+ u32 hwparams4 = dwc->hwparams.hwparams4;
u32 reg;
int ret;
@@ -306,7 +403,9 @@
cpu_relax();
} while (true);
- dwc3_core_soft_reset(dwc);
+ ret = dwc3_core_soft_reset(dwc);
+ if (ret)
+ goto err0;
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
@@ -314,7 +413,29 @@
switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) {
case DWC3_GHWPARAMS1_EN_PWROPT_CLK:
- reg &= ~DWC3_GCTL_DSBLCLKGTNG;
+ /**
+ * WORKAROUND: DWC3 revisions between 2.10a and 2.50a have an
+ * issue which would cause xHCI compliance tests to fail.
+ *
+ * Because of that we cannot enable clock gating on such
+ * configurations.
+ *
+ * Refers to:
+ *
+ * STAR#9000588375: Clock Gating, SOF Issues when ref_clk-Based
+ * SOF/ITP Mode Used
+ */
+ if ((dwc->dr_mode == USB_DR_MODE_HOST ||
+ dwc->dr_mode == USB_DR_MODE_OTG) &&
+ (dwc->revision >= DWC3_REVISION_210A &&
+ dwc->revision <= DWC3_REVISION_250A))
+ reg |= DWC3_GCTL_DSBLCLKGTNG | DWC3_GCTL_SOFITPSYNC;
+ else
+ reg &= ~DWC3_GCTL_DSBLCLKGTNG;
+ break;
+ case DWC3_GHWPARAMS1_EN_PWROPT_HIB:
+ /* enable hibernation here */
+ dwc->nr_scratch = DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(hwparams4);
break;
default:
dev_dbg(dwc->dev, "No power optimization available\n");
@@ -333,16 +454,36 @@
dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+ ret = dwc3_alloc_scratch_buffers(dwc);
+ if (ret)
+ goto err1;
+
+ ret = dwc3_setup_scratch_buffers(dwc);
+ if (ret)
+ goto err2;
+
return 0;
+err2:
+ dwc3_free_scratch_buffers(dwc);
+
+err1:
+ usb_phy_shutdown(dwc->usb2_phy);
+ usb_phy_shutdown(dwc->usb3_phy);
+ phy_exit(dwc->usb2_generic_phy);
+ phy_exit(dwc->usb3_generic_phy);
+
err0:
return ret;
}
static void dwc3_core_exit(struct dwc3 *dwc)
{
+ dwc3_free_scratch_buffers(dwc);
usb_phy_shutdown(dwc->usb2_phy);
usb_phy_shutdown(dwc->usb3_phy);
+ phy_exit(dwc->usb2_generic_phy);
+ phy_exit(dwc->usb3_generic_phy);
}
#define DWC3_ALIGN_MASK (16 - 1)
@@ -411,32 +552,52 @@
if (IS_ERR(dwc->usb2_phy)) {
ret = PTR_ERR(dwc->usb2_phy);
-
- /*
- * if -ENXIO is returned, it means PHY layer wasn't
- * enabled, so it makes no sense to return -EPROBE_DEFER
- * in that case, since no PHY driver will ever probe.
- */
- if (ret == -ENXIO)
+ if (ret == -ENXIO || ret == -ENODEV) {
+ dwc->usb2_phy = NULL;
+ } else if (ret == -EPROBE_DEFER) {
return ret;
-
- dev_err(dev, "no usb2 phy configured\n");
- return -EPROBE_DEFER;
+ } else {
+ dev_err(dev, "no usb2 phy configured\n");
+ return ret;
+ }
}
if (IS_ERR(dwc->usb3_phy)) {
ret = PTR_ERR(dwc->usb3_phy);
-
- /*
- * if -ENXIO is returned, it means PHY layer wasn't
- * enabled, so it makes no sense to return -EPROBE_DEFER
- * in that case, since no PHY driver will ever probe.
- */
- if (ret == -ENXIO)
+ if (ret == -ENXIO || ret == -ENODEV) {
+ dwc->usb3_phy = NULL;
+ } else if (ret == -EPROBE_DEFER) {
return ret;
+ } else {
+ dev_err(dev, "no usb3 phy configured\n");
+ return ret;
+ }
+ }
- dev_err(dev, "no usb3 phy configured\n");
- return -EPROBE_DEFER;
+ dwc->usb2_generic_phy = devm_phy_get(dev, "usb2-phy");
+ if (IS_ERR(dwc->usb2_generic_phy)) {
+ ret = PTR_ERR(dwc->usb2_generic_phy);
+ if (ret == -ENOSYS || ret == -ENODEV) {
+ dwc->usb2_generic_phy = NULL;
+ } else if (ret == -EPROBE_DEFER) {
+ return ret;
+ } else {
+ dev_err(dev, "no usb2 phy configured\n");
+ return ret;
+ }
+ }
+
+ dwc->usb3_generic_phy = devm_phy_get(dev, "usb3-phy");
+ if (IS_ERR(dwc->usb3_generic_phy)) {
+ ret = PTR_ERR(dwc->usb3_generic_phy);
+ if (ret == -ENOSYS || ret == -ENODEV) {
+ dwc->usb3_generic_phy = NULL;
+ } else if (ret == -EPROBE_DEFER) {
+ return ret;
+ } else {
+ dev_err(dev, "no usb3 phy configured\n");
+ return ret;
+ }
}
dwc->xhci_resources[0].start = res->start;
@@ -479,6 +640,14 @@
goto err0;
}
+ if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
+ dwc->dr_mode = USB_DR_MODE_HOST;
+ else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
+ dwc->dr_mode = USB_DR_MODE_PERIPHERAL;
+
+ if (dwc->dr_mode == USB_DR_MODE_UNKNOWN)
+ dwc->dr_mode = USB_DR_MODE_OTG;
+
ret = dwc3_core_init(dwc);
if (ret) {
dev_err(dev, "failed to initialize core\n");
@@ -487,21 +656,20 @@
usb_phy_set_suspend(dwc->usb2_phy, 0);
usb_phy_set_suspend(dwc->usb3_phy, 0);
+ ret = phy_power_on(dwc->usb2_generic_phy);
+ if (ret < 0)
+ goto err1;
+
+ ret = phy_power_on(dwc->usb3_generic_phy);
+ if (ret < 0)
+ goto err_usb2phy_power;
ret = dwc3_event_buffers_setup(dwc);
if (ret) {
dev_err(dwc->dev, "failed to setup event buffers\n");
- goto err1;
+ goto err_usb3phy_power;
}
- if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
- dwc->dr_mode = USB_DR_MODE_HOST;
- else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
- dwc->dr_mode = USB_DR_MODE_PERIPHERAL;
-
- if (dwc->dr_mode == USB_DR_MODE_UNKNOWN)
- dwc->dr_mode = USB_DR_MODE_OTG;
-
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
@@ -568,6 +736,12 @@
err2:
dwc3_event_buffers_cleanup(dwc);
+err_usb3phy_power:
+ phy_power_off(dwc->usb3_generic_phy);
+
+err_usb2phy_power:
+ phy_power_off(dwc->usb2_generic_phy);
+
err1:
usb_phy_set_suspend(dwc->usb2_phy, 1);
usb_phy_set_suspend(dwc->usb3_phy, 1);
@@ -585,6 +759,8 @@
usb_phy_set_suspend(dwc->usb2_phy, 1);
usb_phy_set_suspend(dwc->usb3_phy, 1);
+ phy_power_off(dwc->usb2_generic_phy);
+ phy_power_off(dwc->usb3_generic_phy);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
@@ -682,6 +858,8 @@
usb_phy_shutdown(dwc->usb3_phy);
usb_phy_shutdown(dwc->usb2_phy);
+ phy_exit(dwc->usb2_generic_phy);
+ phy_exit(dwc->usb3_generic_phy);
return 0;
}
@@ -690,9 +868,17 @@
{
struct dwc3 *dwc = dev_get_drvdata(dev);
unsigned long flags;
+ int ret;
usb_phy_init(dwc->usb3_phy);
usb_phy_init(dwc->usb2_phy);
+ ret = phy_init(dwc->usb2_generic_phy);
+ if (ret < 0)
+ return ret;
+
+ ret = phy_init(dwc->usb3_generic_phy);
+ if (ret < 0)
+ goto err_usb2phy_init;
spin_lock_irqsave(&dwc->lock, flags);
@@ -716,6 +902,11 @@
pm_runtime_enable(dev);
return 0;
+
+err_usb2phy_init:
+ phy_exit(dwc->usb2_generic_phy);
+
+ return ret;
}
static const struct dev_pm_ops dwc3_dev_pm_ops = {
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index f8af8d4..57332e3 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -31,11 +31,14 @@
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
+#include <linux/phy/phy.h>
+
/* Global constants */
#define DWC3_EP0_BOUNCE_SIZE 512
#define DWC3_ENDPOINTS_NUM 32
#define DWC3_XHCI_RESOURCES_NUM 2
+#define DWC3_SCRATCHBUF_SIZE 4096 /* each buffer is assumed to be 4KiB */
#define DWC3_EVENT_SIZE 4 /* bytes */
#define DWC3_EVENT_MAX_NUM 64 /* 2 events/endpoint */
#define DWC3_EVENT_BUFFERS_SIZE (DWC3_EVENT_SIZE * DWC3_EVENT_MAX_NUM)
@@ -157,6 +160,7 @@
#define DWC3_GCTL_PRTCAP_OTG 3
#define DWC3_GCTL_CORESOFTRESET (1 << 11)
+#define DWC3_GCTL_SOFITPSYNC (1 << 10)
#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4)
#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
#define DWC3_GCTL_DISSCRAMBLE (1 << 3)
@@ -318,7 +322,7 @@
/* Device Endpoint Command Register */
#define DWC3_DEPCMD_PARAM_SHIFT 16
#define DWC3_DEPCMD_PARAM(x) ((x) << DWC3_DEPCMD_PARAM_SHIFT)
-#define DWC3_DEPCMD_GET_RSC_IDX(x) (((x) >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
+#define DWC3_DEPCMD_GET_RSC_IDX(x) (((x) >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
#define DWC3_DEPCMD_STATUS(x) (((x) >> 15) & 1)
#define DWC3_DEPCMD_HIPRI_FORCERM (1 << 11)
#define DWC3_DEPCMD_CMDACT (1 << 10)
@@ -393,6 +397,7 @@
* @busy_slot: first slot which is owned by HW
* @desc: usb_endpoint_descriptor pointer
* @dwc: pointer to DWC controller
+ * @saved_state: ep state saved during hibernation
* @flags: endpoint flags (wedged, stalled, ...)
* @current_trb: index of current used trb
* @number: endpoint number (1 - 15)
@@ -415,6 +420,7 @@
const struct usb_ss_ep_comp_descriptor *comp_desc;
struct dwc3 *dwc;
+ u32 saved_state;
unsigned flags;
#define DWC3_EP_ENABLED (1 << 0)
#define DWC3_EP_STALL (1 << 1)
@@ -598,6 +604,7 @@
* @ep0_trb: dma address of ep0_trb
* @ep0_usb_req: dummy req used while handling STD USB requests
* @ep0_bounce_addr: dma address of ep0_bounce
+ * @scratch_addr: dma address of scratchbuf
* @lock: for synchronizing
* @dev: pointer to our struct device
* @xhci: pointer to our xHCI child
@@ -606,6 +613,7 @@
* @gadget_driver: pointer to the gadget driver
* @regs: base address for our registers
* @regs_size: address space size
+ * @nr_scratch: number of scratch buffers
* @num_event_buffers: calculated number of event buffers
* @u1u2: only used on revisions <1.83a for workaround
* @maximum_speed: maximum speed requested (mainly for testing purposes)
@@ -613,16 +621,10 @@
* @dr_mode: requested mode of operation
* @usb2_phy: pointer to USB2 PHY
* @usb3_phy: pointer to USB3 PHY
+ * @usb2_generic_phy: pointer to USB2 PHY
+ * @usb3_generic_phy: pointer to USB3 PHY
* @dcfg: saved contents of DCFG register
* @gctl: saved contents of GCTL register
- * @is_selfpowered: true when we are selfpowered
- * @three_stage_setup: set if we perform a three phase setup
- * @ep0_bounced: true when we used bounce buffer
- * @ep0_expect_in: true when we expect a DATA IN transfer
- * @start_config_issued: true when StartConfig command has been issued
- * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround
- * @needs_fifo_resize: not all users might want fifo resizing, flag it
- * @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes.
* @isoch_delay: wValue from Set Isochronous Delay request;
* @u2sel: parameter from Set SEL request.
* @u2pel: parameter from Set SEL request.
@@ -637,15 +639,31 @@
* @mem: points to start of memory which is used for this struct.
* @hwparams: copy of hwparams registers
* @root: debugfs root folder pointer
+ * @regset: debugfs pointer to regdump file
+ * @test_mode: true when we're entering a USB test mode
+ * @test_mode_nr: test feature selector
+ * @delayed_status: true when gadget driver asks for delayed status
+ * @ep0_bounced: true when we used bounce buffer
+ * @ep0_expect_in: true when we expect a DATA IN transfer
+ * @has_hibernation: true when dwc3 was configured with Hibernation
+ * @is_selfpowered: true when we are selfpowered
+ * @needs_fifo_resize: not all users might want fifo resizing, flag it
+ * @pullups_connected: true when Run/Stop bit is set
+ * @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes.
+ * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround
+ * @start_config_issued: true when StartConfig command has been issued
+ * @three_stage_setup: set if we perform a three phase setup
*/
struct dwc3 {
struct usb_ctrlrequest *ctrl_req;
struct dwc3_trb *ep0_trb;
void *ep0_bounce;
+ void *scratchbuf;
u8 *setup_buf;
dma_addr_t ctrl_req_addr;
dma_addr_t ep0_trb_addr;
dma_addr_t ep0_bounce_addr;
+ dma_addr_t scratch_addr;
struct dwc3_request ep0_usb_req;
/* device lock */
@@ -665,6 +683,9 @@
struct usb_phy *usb2_phy;
struct usb_phy *usb3_phy;
+ struct phy *usb2_generic_phy;
+ struct phy *usb3_generic_phy;
+
void __iomem *regs;
size_t regs_size;
@@ -674,6 +695,7 @@
u32 dcfg;
u32 gctl;
+ u32 nr_scratch;
u32 num_event_buffers;
u32 u1u2;
u32 maximum_speed;
@@ -695,17 +717,9 @@
#define DWC3_REVISION_230A 0x5533230a
#define DWC3_REVISION_240A 0x5533240a
#define DWC3_REVISION_250A 0x5533250a
-
- unsigned is_selfpowered:1;
- unsigned three_stage_setup:1;
- unsigned ep0_bounced:1;
- unsigned ep0_expect_in:1;
- unsigned start_config_issued:1;
- unsigned setup_packet_pending:1;
- unsigned delayed_status:1;
- unsigned needs_fifo_resize:1;
- unsigned resize_fifos:1;
- unsigned pullups_connected:1;
+#define DWC3_REVISION_260A 0x5533260a
+#define DWC3_REVISION_270A 0x5533270a
+#define DWC3_REVISION_280A 0x5533280a
enum dwc3_ep0_next ep0_next_event;
enum dwc3_ep0_state ep0state;
@@ -730,6 +744,18 @@
u8 test_mode;
u8 test_mode_nr;
+
+ unsigned delayed_status:1;
+ unsigned ep0_bounced:1;
+ unsigned ep0_expect_in:1;
+ unsigned has_hibernation:1;
+ unsigned is_selfpowered:1;
+ unsigned needs_fifo_resize:1;
+ unsigned pullups_connected:1;
+ unsigned resize_fifos:1;
+ unsigned setup_packet_pending:1;
+ unsigned start_config_issued:1;
+ unsigned three_stage_setup:1;
};
/* -------------------------------------------------------------------------- */
@@ -815,15 +841,15 @@
* 12 - VndrDevTstRcved
* @reserved15_12: Reserved, not used
* @event_info: Information about this event
- * @reserved31_24: Reserved, not used
+ * @reserved31_25: Reserved, not used
*/
struct dwc3_event_devt {
u32 one_bit:1;
u32 device_event:7;
u32 type:4;
u32 reserved15_12:4;
- u32 event_info:8;
- u32 reserved31_24:8;
+ u32 event_info:9;
+ u32 reserved31_25:7;
} __packed;
/**
@@ -856,6 +882,19 @@
struct dwc3_event_gevt gevt;
};
+/**
+ * struct dwc3_gadget_ep_cmd_params - representation of endpoint command
+ * parameters
+ * @param2: third parameter
+ * @param1: second parameter
+ * @param0: first parameter
+ */
+struct dwc3_gadget_ep_cmd_params {
+ u32 param2;
+ u32 param1;
+ u32 param0;
+};
+
/*
* DWC3 Features to be used as Driver Data
*/
@@ -881,11 +920,31 @@
#if IS_ENABLED(CONFIG_USB_DWC3_GADGET) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)
int dwc3_gadget_init(struct dwc3 *dwc);
void dwc3_gadget_exit(struct dwc3 *dwc);
+int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode);
+int dwc3_gadget_get_link_state(struct dwc3 *dwc);
+int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state);
+int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
+ unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
+int dwc3_send_gadget_generic_command(struct dwc3 *dwc, int cmd, u32 param);
#else
static inline int dwc3_gadget_init(struct dwc3 *dwc)
{ return 0; }
static inline void dwc3_gadget_exit(struct dwc3 *dwc)
{ }
+static inline int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode)
+{ return 0; }
+static inline int dwc3_gadget_get_link_state(struct dwc3 *dwc)
+{ return 0; }
+static inline int dwc3_gadget_set_link_state(struct dwc3 *dwc,
+ enum dwc3_link_state state)
+{ return 0; }
+
+static inline int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
+ unsigned cmd, struct dwc3_gadget_ep_cmd_params *params)
+{ return 0; }
+static inline int dwc3_send_gadget_generic_command(struct dwc3 *dwc,
+ int cmd, u32 param)
+{ return 0; }
#endif
/* power management interface */
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index b1d7ee6..1160ff4 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -423,11 +423,6 @@
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(dev, "missing memory base resource\n");
- return -EINVAL;
- }
-
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 2da0a5a..a740eac 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -68,6 +68,22 @@
}
/**
+ * dwc3_gadget_get_link_state - Gets current state of USB Link
+ * @dwc: pointer to our context structure
+ *
+ * Caller should take care of locking. This function will
+ * return the link state on success (>= 0) or -ETIMEDOUT.
+ */
+int dwc3_gadget_get_link_state(struct dwc3 *dwc)
+{
+ u32 reg;
+
+ reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+
+ return DWC3_DSTS_USBLNKST(reg);
+}
+
+/**
* dwc3_gadget_set_link_state - Sets USB Link to a particular State
* @dwc: pointer to our context structure
* @state: the state to put link into
@@ -417,7 +433,7 @@
static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep,
const struct usb_endpoint_descriptor *desc,
const struct usb_ss_ep_comp_descriptor *comp_desc,
- bool ignore)
+ bool ignore, bool restore)
{
struct dwc3_gadget_ep_cmd_params params;
@@ -436,6 +452,11 @@
if (ignore)
params.param0 |= DWC3_DEPCFG_IGN_SEQ_NUM;
+ if (restore) {
+ params.param0 |= DWC3_DEPCFG_ACTION_RESTORE;
+ params.param2 |= dep->saved_state;
+ }
+
params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN
| DWC3_DEPCFG_XFER_NOT_READY_EN;
@@ -494,7 +515,7 @@
static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
const struct usb_endpoint_descriptor *desc,
const struct usb_ss_ep_comp_descriptor *comp_desc,
- bool ignore)
+ bool ignore, bool restore)
{
struct dwc3 *dwc = dep->dwc;
u32 reg;
@@ -508,7 +529,8 @@
return ret;
}
- ret = dwc3_gadget_set_ep_config(dwc, dep, desc, comp_desc, ignore);
+ ret = dwc3_gadget_set_ep_config(dwc, dep, desc, comp_desc, ignore,
+ restore);
if (ret)
return ret;
@@ -548,13 +570,13 @@
return 0;
}
-static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum);
+static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force);
static void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep)
{
struct dwc3_request *req;
if (!list_empty(&dep->req_queued)) {
- dwc3_stop_active_transfer(dwc, dep->number);
+ dwc3_stop_active_transfer(dwc, dep->number, true);
/* - giveback all requests to gadget driver */
while (!list_empty(&dep->req_queued)) {
@@ -659,7 +681,7 @@
}
spin_lock_irqsave(&dwc->lock, flags);
- ret = __dwc3_gadget_ep_enable(dep, desc, ep->comp_desc, false);
+ ret = __dwc3_gadget_ep_enable(dep, desc, ep->comp_desc, false, false);
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
@@ -771,9 +793,6 @@
trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;
else
trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS;
-
- if (!req->request.no_interrupt && !chain)
- trb->ctrl |= DWC3_TRB_CTRL_IOC;
break;
case USB_ENDPOINT_XFER_BULK:
@@ -788,6 +807,9 @@
BUG();
}
+ if (!req->request.no_interrupt && !chain)
+ trb->ctrl |= DWC3_TRB_CTRL_IOC;
+
if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;
trb->ctrl |= DWC3_TRB_CTRL_CSP;
@@ -1077,7 +1099,7 @@
*/
if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
if (list_empty(&dep->req_queued)) {
- dwc3_stop_active_transfer(dwc, dep->number);
+ dwc3_stop_active_transfer(dwc, dep->number, true);
dep->flags = DWC3_EP_ENABLED;
}
return 0;
@@ -1107,6 +1129,23 @@
return ret;
}
+ /*
+ * 4. Stream Capable Bulk Endpoints. We need to start the transfer
+ * right away, otherwise host will not know we have streams to be
+ * handled.
+ */
+ if (dep->stream_capable) {
+ int ret;
+
+ ret = __dwc3_gadget_kick_transfer(dep, 0, true);
+ if (ret && ret != -EBUSY) {
+ struct dwc3 *dwc = dep->dwc;
+
+ dev_dbg(dwc->dev, "%s: failed to kick transfers\n",
+ dep->name);
+ }
+ }
+
return 0;
}
@@ -1163,7 +1202,7 @@
}
if (r == req) {
/* wait until it is processed */
- dwc3_stop_active_transfer(dwc, dep->number);
+ dwc3_stop_active_transfer(dwc, dep->number, true);
goto out1;
}
dev_err(dwc->dev, "request %p was not queued to %s\n",
@@ -1194,8 +1233,7 @@
ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
DWC3_DEPCMD_SETSTALL, ¶ms);
if (ret)
- dev_err(dwc->dev, "failed to %s STALL on %s\n",
- value ? "set" : "clear",
+ dev_err(dwc->dev, "failed to set STALL on %s\n",
dep->name);
else
dep->flags |= DWC3_EP_STALL;
@@ -1203,8 +1241,7 @@
ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
DWC3_DEPCMD_CLEARSTALL, ¶ms);
if (ret)
- dev_err(dwc->dev, "failed to %s STALL on %s\n",
- value ? "set" : "clear",
+ dev_err(dwc->dev, "failed to clear STALL on %s\n",
dep->name);
else
dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);
@@ -1387,7 +1424,7 @@
return 0;
}
-static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on)
+static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend)
{
u32 reg;
u32 timeout = 500;
@@ -1402,9 +1439,17 @@
if (dwc->revision >= DWC3_REVISION_194A)
reg &= ~DWC3_DCTL_KEEP_CONNECT;
reg |= DWC3_DCTL_RUN_STOP;
+
+ if (dwc->has_hibernation)
+ reg |= DWC3_DCTL_KEEP_CONNECT;
+
dwc->pullups_connected = true;
} else {
reg &= ~DWC3_DCTL_RUN_STOP;
+
+ if (dwc->has_hibernation && !suspend)
+ reg &= ~DWC3_DCTL_KEEP_CONNECT;
+
dwc->pullups_connected = false;
}
@@ -1442,7 +1487,7 @@
is_on = !!is_on;
spin_lock_irqsave(&dwc->lock, flags);
- ret = dwc3_gadget_run_stop(dwc, is_on);
+ ret = dwc3_gadget_run_stop(dwc, is_on, false);
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
@@ -1549,14 +1594,16 @@
dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
dep = dwc->eps[0];
- ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false);
+ ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false,
+ false);
if (ret) {
dev_err(dwc->dev, "failed to enable %s\n", dep->name);
goto err2;
}
dep = dwc->eps[1];
- ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false);
+ ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false,
+ false);
if (ret) {
dev_err(dwc->dev, "failed to enable %s\n", dep->name);
goto err3;
@@ -1849,15 +1896,12 @@
*/
dep->flags = DWC3_EP_PENDING_REQUEST;
} else {
- dwc3_stop_active_transfer(dwc, dep->number);
+ dwc3_stop_active_transfer(dwc, dep->number, true);
dep->flags = DWC3_EP_ENABLED;
}
return 1;
}
- if ((event->status & DEPEVT_STATUS_IOC) &&
- (trb->ctrl & DWC3_TRB_CTRL_IOC))
- return 0;
return 1;
}
@@ -1999,7 +2043,25 @@
}
}
-static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum)
+static void dwc3_suspend_gadget(struct dwc3 *dwc)
+{
+ if (dwc->gadget_driver && dwc->gadget_driver->suspend) {
+ spin_unlock(&dwc->lock);
+ dwc->gadget_driver->suspend(&dwc->gadget);
+ spin_lock(&dwc->lock);
+ }
+}
+
+static void dwc3_resume_gadget(struct dwc3 *dwc)
+{
+ if (dwc->gadget_driver && dwc->gadget_driver->resume) {
+ spin_unlock(&dwc->lock);
+ dwc->gadget_driver->resume(&dwc->gadget);
+ spin_lock(&dwc->lock);
+ }
+}
+
+static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force)
{
struct dwc3_ep *dep;
struct dwc3_gadget_ep_cmd_params params;
@@ -2031,7 +2093,8 @@
*/
cmd = DWC3_DEPCMD_ENDTRANSFER;
- cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC;
+ cmd |= force ? DWC3_DEPCMD_HIPRI_FORCERM : 0;
+ cmd |= DWC3_DEPCMD_CMDIOC;
cmd |= DWC3_DEPCMD_PARAM(dep->resource_index);
memset(¶ms, 0, sizeof(params));
ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms);
@@ -2260,17 +2323,23 @@
reg |= DWC3_DCTL_HIRD_THRES(12);
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+ } else {
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg &= ~DWC3_DCTL_HIRD_THRES_MASK;
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
}
dep = dwc->eps[0];
- ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, true);
+ ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, true,
+ false);
if (ret) {
dev_err(dwc->dev, "failed to enable %s\n", dep->name);
return;
}
dep = dwc->eps[1];
- ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, true);
+ ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, true,
+ false);
if (ret) {
dev_err(dwc->dev, "failed to enable %s\n", dep->name);
return;
@@ -2378,9 +2447,50 @@
dwc->link_state = next;
+ switch (next) {
+ case DWC3_LINK_STATE_U1:
+ if (dwc->speed == USB_SPEED_SUPER)
+ dwc3_suspend_gadget(dwc);
+ break;
+ case DWC3_LINK_STATE_U2:
+ case DWC3_LINK_STATE_U3:
+ dwc3_suspend_gadget(dwc);
+ break;
+ case DWC3_LINK_STATE_RESUME:
+ dwc3_resume_gadget(dwc);
+ break;
+ default:
+ /* do nothing */
+ break;
+ }
+
dev_vdbg(dwc->dev, "%s link %d\n", __func__, dwc->link_state);
}
+static void dwc3_gadget_hibernation_interrupt(struct dwc3 *dwc,
+ unsigned int evtinfo)
+{
+ unsigned int is_ss = evtinfo & BIT(4);
+
+ /**
+ * WORKAROUND: DWC3 revison 2.20a with hibernation support
+ * have a known issue which can cause USB CV TD.9.23 to fail
+ * randomly.
+ *
+ * Because of this issue, core could generate bogus hibernation
+ * events which SW needs to ignore.
+ *
+ * Refers to:
+ *
+ * STAR#9000546576: Device Mode Hibernation: Issue in USB 2.0
+ * Device Fallback from SuperSpeed
+ */
+ if (is_ss ^ (dwc->speed == USB_SPEED_SUPER))
+ return;
+
+ /* enter hibernation here */
+}
+
static void dwc3_gadget_interrupt(struct dwc3 *dwc,
const struct dwc3_event_devt *event)
{
@@ -2397,6 +2507,13 @@
case DWC3_DEVICE_EVENT_WAKEUP:
dwc3_gadget_wakeup_interrupt(dwc);
break;
+ case DWC3_DEVICE_EVENT_HIBER_REQ:
+ if (dev_WARN_ONCE(dwc->dev, !dwc->has_hibernation,
+ "unexpected hibernation event\n"))
+ break;
+
+ dwc3_gadget_hibernation_interrupt(dwc, event->event_info);
+ break;
case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
dwc3_gadget_linksts_change_interrupt(dwc, event->event_info);
break;
@@ -2661,8 +2778,10 @@
int dwc3_gadget_prepare(struct dwc3 *dwc)
{
- if (dwc->pullups_connected)
+ if (dwc->pullups_connected) {
dwc3_gadget_disable_irq(dwc);
+ dwc3_gadget_run_stop(dwc, true, true);
+ }
return 0;
}
@@ -2671,7 +2790,7 @@
{
if (dwc->pullups_connected) {
dwc3_gadget_enable_irq(dwc);
- dwc3_gadget_run_stop(dwc, true);
+ dwc3_gadget_run_stop(dwc, true, false);
}
}
@@ -2694,12 +2813,14 @@
dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
dep = dwc->eps[0];
- ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false);
+ ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false,
+ false);
if (ret)
goto err0;
dep = dwc->eps[1];
- ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false);
+ ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false,
+ false);
if (ret)
goto err1;
diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h
index febe1aa..a0ee75b 100644
--- a/drivers/usb/dwc3/gadget.h
+++ b/drivers/usb/dwc3/gadget.h
@@ -56,12 +56,6 @@
/* DEPXFERCFG parameter 0 */
#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
-struct dwc3_gadget_ep_cmd_params {
- u32 param2;
- u32 param1;
- u32 param0;
-};
-
/* -------------------------------------------------------------------------- */
#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))
@@ -85,9 +79,6 @@
void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
int status);
-int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode);
-int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state);
-
void dwc3_ep0_interrupt(struct dwc3 *dwc,
const struct dwc3_event_depevt *event);
void dwc3_ep0_out_start(struct dwc3 *dwc);
@@ -95,9 +86,6 @@
int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
gfp_t gfp_flags);
int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
-int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
- unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
-int dwc3_send_gadget_generic_command(struct dwc3 *dwc, int cmd, u32 param);
/**
* dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 8154165..3557c7e 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -226,7 +226,7 @@
config USB_OMAP
tristate "OMAP USB Device Controller"
depends on ARCH_OMAP1
- select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG
+ select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
help
Many Texas Instruments OMAP processors have flexible full
speed USB device controllers, with support for up to 30
@@ -301,7 +301,6 @@
gadget drivers to also be dynamically linked.
config USB_S3C_HSOTG
- depends on ARM
tristate "Designware/S3C HS/OtG USB Device controller"
help
The Designware USB2.0 high-speed gadget controller
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index cea8c20..f605ad8 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -1758,15 +1758,15 @@
/* newer chips have more FIFO memory than rm9200 */
if (cpu_is_at91sam9260() || cpu_is_at91sam9g20()) {
- usb_ep_set_maxpacket_limit(&udc->ep[0].ep, 64);
- usb_ep_set_maxpacket_limit(&udc->ep[3].ep, 64);
- usb_ep_set_maxpacket_limit(&udc->ep[4].ep, 512);
- usb_ep_set_maxpacket_limit(&udc->ep[5].ep, 512);
+ udc->ep[0].maxpacket = 64;
+ udc->ep[3].maxpacket = 64;
+ udc->ep[4].maxpacket = 512;
+ udc->ep[5].maxpacket = 512;
} else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) {
- usb_ep_set_maxpacket_limit(&udc->ep[3].ep, 64);
+ udc->ep[3].maxpacket = 64;
} else if (cpu_is_at91sam9263()) {
- usb_ep_set_maxpacket_limit(&udc->ep[0].ep, 64);
- usb_ep_set_maxpacket_limit(&udc->ep[3].ep, 64);
+ udc->ep[0].maxpacket = 64;
+ udc->ep[3].maxpacket = 64;
}
udc->udp_baseaddr = ioremap(res->start, resource_size(res));
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index 52771d4..9f65324 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -1661,7 +1661,7 @@
if (dma_status) {
int i;
- for (i = 1; i < USBA_NR_ENDPOINTS; i++)
+ for (i = 1; i < USBA_NR_DMAS; i++)
if (dma_status & (1 << i))
usba_dma_irq(udc, &udc->usba_ep[i]);
}
@@ -1670,7 +1670,7 @@
if (ep_status) {
int i;
- for (i = 0; i < USBA_NR_ENDPOINTS; i++)
+ for (i = 0; i < udc->num_ep; i++)
if (ep_status & (1 << i)) {
if (ep_is_control(&udc->usba_ep[i]))
usba_control_irq(udc, &udc->usba_ep[i]);
@@ -1827,12 +1827,12 @@
toggle_bias(0);
usba_writel(udc, CTRL, USBA_DISABLE_MASK);
- udc->driver = NULL;
-
clk_disable_unprepare(udc->hclk);
clk_disable_unprepare(udc->pclk);
- DBG(DBG_GADGET, "unregistered driver `%s'\n", driver->driver.name);
+ DBG(DBG_GADGET, "unregistered driver `%s'\n", udc->driver->driver.name);
+
+ udc->driver = NULL;
return 0;
}
@@ -1914,6 +1914,12 @@
i++;
}
+ if (i == 0) {
+ dev_err(&pdev->dev, "of_probe: no endpoint specified\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
return eps;
err:
return ERR_PTR(ret);
diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h
index 2922db5..a70706e 100644
--- a/drivers/usb/gadget/atmel_usba_udc.h
+++ b/drivers/usb/gadget/atmel_usba_udc.h
@@ -210,7 +210,7 @@
#define USBA_FIFO_BASE(x) ((x) << 16)
/* Synth parameters */
-#define USBA_NR_ENDPOINTS 7
+#define USBA_NR_DMAS 7
#define EP0_FIFO_SIZE 64
#define EP0_EPT_SIZE USBA_EPT_SIZE_64
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index d742bed..fab9064 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1139,7 +1139,7 @@
uc = copy_gadget_strings(sp, n_gstrings, n_strings);
if (IS_ERR(uc))
- return ERR_PTR(PTR_ERR(uc));
+ return ERR_CAST(uc);
n_gs = get_containers_gs(uc);
ret = usb_string_ids_tab(cdev, n_gs[0]->strings);
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index 2b43343..2e164dc 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -28,6 +28,10 @@
#include <linux/usb/composite.h>
#include <linux/usb/functionfs.h>
+#include <linux/aio.h>
+#include <linux/mmu_context.h>
+#include <linux/poll.h>
+
#include "u_fs.h"
#include "configfs.h"
@@ -99,6 +103,14 @@
}
+static inline enum ffs_setup_state
+ffs_setup_state_clear_cancelled(struct ffs_data *ffs)
+{
+ return (enum ffs_setup_state)
+ cmpxchg(&ffs->setup_state, FFS_SETUP_CANCELLED, FFS_NO_SETUP);
+}
+
+
static void ffs_func_eps_disable(struct ffs_function *func);
static int __must_check ffs_func_eps_enable(struct ffs_function *func);
@@ -122,8 +134,8 @@
struct usb_ep *ep; /* P: ffs->eps_lock */
struct usb_request *req; /* P: epfile->mutex */
- /* [0]: full speed, [1]: high speed */
- struct usb_endpoint_descriptor *descs[2];
+ /* [0]: full speed, [1]: high speed, [2]: super speed */
+ struct usb_endpoint_descriptor *descs[3];
u8 num;
@@ -148,6 +160,25 @@
unsigned char _pad;
};
+/* ffs_io_data structure ***************************************************/
+
+struct ffs_io_data {
+ bool aio;
+ bool read;
+
+ struct kiocb *kiocb;
+ const struct iovec *iovec;
+ unsigned long nr_segs;
+ char __user *buf;
+ size_t len;
+
+ struct mm_struct *mm;
+ struct work_struct work;
+
+ struct usb_ep *ep;
+ struct usb_request *req;
+};
+
static int __must_check ffs_epfiles_create(struct ffs_data *ffs);
static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count);
@@ -161,8 +192,10 @@
DEFINE_MUTEX(ffs_lock);
EXPORT_SYMBOL(ffs_lock);
-static struct ffs_dev *ffs_find_dev(const char *name);
+static struct ffs_dev *_ffs_find_dev(const char *name);
+static struct ffs_dev *_ffs_alloc_dev(void);
static int _ffs_name_dev(struct ffs_dev *dev, const char *name);
+static void _ffs_free_dev(struct ffs_dev *dev);
static void *ffs_acquire_dev(const char *dev_name);
static void ffs_release_dev(struct ffs_data *ffs_data);
static int ffs_ready(struct ffs_data *ffs);
@@ -218,7 +251,7 @@
}
ffs->setup_state = FFS_NO_SETUP;
- return ffs->ep0req_status;
+ return req->status ? req->status : req->actual;
}
static int __ffs_ep0_stall(struct ffs_data *ffs)
@@ -244,7 +277,7 @@
ENTER();
/* Fast check if setup was canceled */
- if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED)
+ if (ffs_setup_state_clear_cancelled(ffs) == FFS_SETUP_CANCELLED)
return -EIDRM;
/* Acquire mutex */
@@ -310,8 +343,8 @@
* rather then _irqsave
*/
spin_lock_irq(&ffs->ev.waitq.lock);
- switch (FFS_SETUP_STATE(ffs)) {
- case FFS_SETUP_CANCELED:
+ switch (ffs_setup_state_clear_cancelled(ffs)) {
+ case FFS_SETUP_CANCELLED:
ret = -EIDRM;
goto done_spin;
@@ -346,7 +379,7 @@
/*
* We are guaranteed to be still in FFS_ACTIVE state
* but the state of setup could have changed from
- * FFS_SETUP_PENDING to FFS_SETUP_CANCELED so we need
+ * FFS_SETUP_PENDING to FFS_SETUP_CANCELLED so we need
* to check for that. If that happened we copied data
* from user space in vain but it's unlikely.
*
@@ -355,7 +388,8 @@
* transition can be performed and it's protected by
* mutex.
*/
- if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) {
+ if (ffs_setup_state_clear_cancelled(ffs) ==
+ FFS_SETUP_CANCELLED) {
ret = -EIDRM;
done_spin:
spin_unlock_irq(&ffs->ev.waitq.lock);
@@ -421,7 +455,7 @@
ENTER();
/* Fast check if setup was canceled */
- if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED)
+ if (ffs_setup_state_clear_cancelled(ffs) == FFS_SETUP_CANCELLED)
return -EIDRM;
/* Acquire mutex */
@@ -441,8 +475,8 @@
*/
spin_lock_irq(&ffs->ev.waitq.lock);
- switch (FFS_SETUP_STATE(ffs)) {
- case FFS_SETUP_CANCELED:
+ switch (ffs_setup_state_clear_cancelled(ffs)) {
+ case FFS_SETUP_CANCELLED:
ret = -EIDRM;
break;
@@ -489,7 +523,8 @@
spin_lock_irq(&ffs->ev.waitq.lock);
/* See ffs_ep0_write() */
- if (FFS_SETUP_STATE(ffs) == FFS_SETUP_CANCELED) {
+ if (ffs_setup_state_clear_cancelled(ffs) ==
+ FFS_SETUP_CANCELLED) {
ret = -EIDRM;
break;
}
@@ -558,6 +593,45 @@
return ret;
}
+static unsigned int ffs_ep0_poll(struct file *file, poll_table *wait)
+{
+ struct ffs_data *ffs = file->private_data;
+ unsigned int mask = POLLWRNORM;
+ int ret;
+
+ poll_wait(file, &ffs->ev.waitq, wait);
+
+ ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK);
+ if (unlikely(ret < 0))
+ return mask;
+
+ switch (ffs->state) {
+ case FFS_READ_DESCRIPTORS:
+ case FFS_READ_STRINGS:
+ mask |= POLLOUT;
+ break;
+
+ case FFS_ACTIVE:
+ switch (ffs->setup_state) {
+ case FFS_NO_SETUP:
+ if (ffs->ev.count)
+ mask |= POLLIN;
+ break;
+
+ case FFS_SETUP_PENDING:
+ case FFS_SETUP_CANCELLED:
+ mask |= (POLLIN | POLLOUT);
+ break;
+ }
+ case FFS_CLOSING:
+ break;
+ }
+
+ mutex_unlock(&ffs->mutex);
+
+ return mask;
+}
+
static const struct file_operations ffs_ep0_operations = {
.llseek = no_llseek,
@@ -566,6 +640,7 @@
.read = ffs_ep0_read,
.release = ffs_ep0_release,
.unlocked_ioctl = ffs_ep0_ioctl,
+ .poll = ffs_ep0_poll,
};
@@ -581,8 +656,52 @@
}
}
-static ssize_t ffs_epfile_io(struct file *file,
- char __user *buf, size_t len, int read)
+static void ffs_user_copy_worker(struct work_struct *work)
+{
+ struct ffs_io_data *io_data = container_of(work, struct ffs_io_data,
+ work);
+ int ret = io_data->req->status ? io_data->req->status :
+ io_data->req->actual;
+
+ if (io_data->read && ret > 0) {
+ int i;
+ size_t pos = 0;
+ use_mm(io_data->mm);
+ for (i = 0; i < io_data->nr_segs; i++) {
+ if (unlikely(copy_to_user(io_data->iovec[i].iov_base,
+ &io_data->buf[pos],
+ io_data->iovec[i].iov_len))) {
+ ret = -EFAULT;
+ break;
+ }
+ pos += io_data->iovec[i].iov_len;
+ }
+ unuse_mm(io_data->mm);
+ }
+
+ aio_complete(io_data->kiocb, ret, ret);
+
+ usb_ep_free_request(io_data->ep, io_data->req);
+
+ io_data->kiocb->private = NULL;
+ if (io_data->read)
+ kfree(io_data->iovec);
+ kfree(io_data->buf);
+ kfree(io_data);
+}
+
+static void ffs_epfile_async_io_complete(struct usb_ep *_ep,
+ struct usb_request *req)
+{
+ struct ffs_io_data *io_data = req->context;
+
+ ENTER();
+
+ INIT_WORK(&io_data->work, ffs_user_copy_worker);
+ schedule_work(&io_data->work);
+}
+
+static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
{
struct ffs_epfile *epfile = file->private_data;
struct ffs_ep *ep;
@@ -612,7 +731,7 @@
}
/* Do we halt? */
- halt = !read == !epfile->in;
+ halt = (!io_data->read == !epfile->in);
if (halt && epfile->isoc) {
ret = -EINVAL;
goto error;
@@ -630,15 +749,32 @@
* Controller may require buffer size to be aligned to
* maxpacketsize of an out endpoint.
*/
- data_len = read ? usb_ep_align_maybe(gadget, ep->ep, len) : len;
+ data_len = io_data->read ?
+ usb_ep_align_maybe(gadget, ep->ep, io_data->len) :
+ io_data->len;
data = kmalloc(data_len, GFP_KERNEL);
if (unlikely(!data))
return -ENOMEM;
-
- if (!read && unlikely(copy_from_user(data, buf, len))) {
- ret = -EFAULT;
- goto error;
+ if (io_data->aio && !io_data->read) {
+ int i;
+ size_t pos = 0;
+ for (i = 0; i < io_data->nr_segs; i++) {
+ if (unlikely(copy_from_user(&data[pos],
+ io_data->iovec[i].iov_base,
+ io_data->iovec[i].iov_len))) {
+ ret = -EFAULT;
+ goto error;
+ }
+ pos += io_data->iovec[i].iov_len;
+ }
+ } else {
+ if (!io_data->read &&
+ unlikely(__copy_from_user(data, io_data->buf,
+ io_data->len))) {
+ ret = -EFAULT;
+ goto error;
+ }
}
}
@@ -661,40 +797,78 @@
ret = -EBADMSG;
} else {
/* Fire the request */
- DECLARE_COMPLETION_ONSTACK(done);
+ struct usb_request *req;
- struct usb_request *req = ep->req;
- req->context = &done;
- req->complete = ffs_epfile_io_complete;
- req->buf = data;
- req->length = data_len;
+ if (io_data->aio) {
+ req = usb_ep_alloc_request(ep->ep, GFP_KERNEL);
+ if (unlikely(!req))
+ goto error_lock;
- ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC);
+ req->buf = data;
+ req->length = io_data->len;
- spin_unlock_irq(&epfile->ffs->eps_lock);
+ io_data->buf = data;
+ io_data->ep = ep->ep;
+ io_data->req = req;
- if (unlikely(ret < 0)) {
- /* nop */
- } else if (unlikely(wait_for_completion_interruptible(&done))) {
- ret = -EINTR;
- usb_ep_dequeue(ep->ep, req);
+ req->context = io_data;
+ req->complete = ffs_epfile_async_io_complete;
+
+ ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC);
+ if (unlikely(ret)) {
+ usb_ep_free_request(ep->ep, req);
+ goto error_lock;
+ }
+ ret = -EIOCBQUEUED;
+
+ spin_unlock_irq(&epfile->ffs->eps_lock);
} else {
- /*
- * XXX We may end up silently droping data here.
- * Since data_len (i.e. req->length) may be bigger
- * than len (after being rounded up to maxpacketsize),
- * we may end up with more data then user space has
- * space for.
- */
- ret = ep->status;
- if (read && ret > 0 &&
- unlikely(copy_to_user(buf, data,
- min_t(size_t, ret, len))))
- ret = -EFAULT;
+ DECLARE_COMPLETION_ONSTACK(done);
+
+ req = ep->req;
+ req->buf = data;
+ req->length = io_data->len;
+
+ req->context = &done;
+ req->complete = ffs_epfile_io_complete;
+
+ ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC);
+
+ spin_unlock_irq(&epfile->ffs->eps_lock);
+
+ if (unlikely(ret < 0)) {
+ /* nop */
+ } else if (unlikely(
+ wait_for_completion_interruptible(&done))) {
+ ret = -EINTR;
+ usb_ep_dequeue(ep->ep, req);
+ } else {
+ /*
+ * XXX We may end up silently droping data
+ * here. Since data_len (i.e. req->length) may
+ * be bigger than len (after being rounded up
+ * to maxpacketsize), we may end up with more
+ * data then user space has space for.
+ */
+ ret = ep->status;
+ if (io_data->read && ret > 0) {
+ ret = min_t(size_t, ret, io_data->len);
+
+ if (unlikely(copy_to_user(io_data->buf,
+ data, ret)))
+ ret = -EFAULT;
+ }
+ }
+ kfree(data);
}
}
mutex_unlock(&epfile->mutex);
+ return ret;
+
+error_lock:
+ spin_unlock_irq(&epfile->ffs->eps_lock);
+ mutex_unlock(&epfile->mutex);
error:
kfree(data);
return ret;
@@ -704,17 +878,31 @@
ffs_epfile_write(struct file *file, const char __user *buf, size_t len,
loff_t *ptr)
{
+ struct ffs_io_data io_data;
+
ENTER();
- return ffs_epfile_io(file, (char __user *)buf, len, 0);
+ io_data.aio = false;
+ io_data.read = false;
+ io_data.buf = (char * __user)buf;
+ io_data.len = len;
+
+ return ffs_epfile_io(file, &io_data);
}
static ssize_t
ffs_epfile_read(struct file *file, char __user *buf, size_t len, loff_t *ptr)
{
+ struct ffs_io_data io_data;
+
ENTER();
- return ffs_epfile_io(file, buf, len, 1);
+ io_data.aio = false;
+ io_data.read = true;
+ io_data.buf = buf;
+ io_data.len = len;
+
+ return ffs_epfile_io(file, &io_data);
}
static int
@@ -733,6 +921,89 @@
return 0;
}
+static int ffs_aio_cancel(struct kiocb *kiocb)
+{
+ struct ffs_io_data *io_data = kiocb->private;
+ struct ffs_epfile *epfile = kiocb->ki_filp->private_data;
+ int value;
+
+ ENTER();
+
+ spin_lock_irq(&epfile->ffs->eps_lock);
+
+ if (likely(io_data && io_data->ep && io_data->req))
+ value = usb_ep_dequeue(io_data->ep, io_data->req);
+ else
+ value = -EINVAL;
+
+ spin_unlock_irq(&epfile->ffs->eps_lock);
+
+ return value;
+}
+
+static ssize_t ffs_epfile_aio_write(struct kiocb *kiocb,
+ const struct iovec *iovec,
+ unsigned long nr_segs, loff_t loff)
+{
+ struct ffs_io_data *io_data;
+
+ ENTER();
+
+ io_data = kmalloc(sizeof(*io_data), GFP_KERNEL);
+ if (unlikely(!io_data))
+ return -ENOMEM;
+
+ io_data->aio = true;
+ io_data->read = false;
+ io_data->kiocb = kiocb;
+ io_data->iovec = iovec;
+ io_data->nr_segs = nr_segs;
+ io_data->len = kiocb->ki_nbytes;
+ io_data->mm = current->mm;
+
+ kiocb->private = io_data;
+
+ kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
+
+ return ffs_epfile_io(kiocb->ki_filp, io_data);
+}
+
+static ssize_t ffs_epfile_aio_read(struct kiocb *kiocb,
+ const struct iovec *iovec,
+ unsigned long nr_segs, loff_t loff)
+{
+ struct ffs_io_data *io_data;
+ struct iovec *iovec_copy;
+
+ ENTER();
+
+ iovec_copy = kmalloc_array(nr_segs, sizeof(*iovec_copy), GFP_KERNEL);
+ if (unlikely(!iovec_copy))
+ return -ENOMEM;
+
+ memcpy(iovec_copy, iovec, sizeof(struct iovec)*nr_segs);
+
+ io_data = kmalloc(sizeof(*io_data), GFP_KERNEL);
+ if (unlikely(!io_data)) {
+ kfree(iovec_copy);
+ return -ENOMEM;
+ }
+
+ io_data->aio = true;
+ io_data->read = true;
+ io_data->kiocb = kiocb;
+ io_data->iovec = iovec_copy;
+ io_data->nr_segs = nr_segs;
+ io_data->len = kiocb->ki_nbytes;
+ io_data->mm = current->mm;
+
+ kiocb->private = io_data;
+
+ kiocb_set_cancel_fn(kiocb, ffs_aio_cancel);
+
+ return ffs_epfile_io(kiocb->ki_filp, io_data);
+}
+
static int
ffs_epfile_release(struct inode *inode, struct file *file)
{
@@ -789,6 +1060,8 @@
.open = ffs_epfile_open,
.write = ffs_epfile_write,
.read = ffs_epfile_read,
+ .aio_write = ffs_epfile_aio_write,
+ .aio_read = ffs_epfile_aio_read,
.release = ffs_epfile_release,
.unlocked_ioctl = ffs_epfile_ioctl,
};
@@ -1172,7 +1445,7 @@
if (ffs->epfiles)
ffs_epfiles_destroy(ffs->epfiles, ffs->eps_count);
- kfree(ffs->raw_descs);
+ kfree(ffs->raw_descs_data);
kfree(ffs->raw_strings);
kfree(ffs->stringtabs);
}
@@ -1184,14 +1457,15 @@
ffs_data_clear(ffs);
ffs->epfiles = NULL;
+ ffs->raw_descs_data = NULL;
ffs->raw_descs = NULL;
ffs->raw_strings = NULL;
ffs->stringtabs = NULL;
ffs->raw_descs_length = 0;
- ffs->raw_fs_descs_length = 0;
ffs->fs_descs_count = 0;
ffs->hs_descs_count = 0;
+ ffs->ss_descs_count = 0;
ffs->strings_count = 0;
ffs->interfaces_count = 0;
@@ -1334,7 +1608,24 @@
spin_lock_irqsave(&func->ffs->eps_lock, flags);
do {
struct usb_endpoint_descriptor *ds;
- ds = ep->descs[ep->descs[1] ? 1 : 0];
+ int desc_idx;
+
+ if (ffs->gadget->speed == USB_SPEED_SUPER)
+ desc_idx = 2;
+ else if (ffs->gadget->speed == USB_SPEED_HIGH)
+ desc_idx = 1;
+ else
+ desc_idx = 0;
+
+ /* fall-back to lower speed if desc missing for current speed */
+ do {
+ ds = ep->descs[desc_idx];
+ } while (!ds && --desc_idx >= 0);
+
+ if (!ds) {
+ ret = -EINVAL;
+ break;
+ }
ep->ep->driver_data = ep;
ep->ep->desc = ds;
@@ -1469,6 +1760,12 @@
}
break;
+ case USB_DT_SS_ENDPOINT_COMP:
+ pr_vdebug("EP SS companion descriptor\n");
+ if (length != sizeof(struct usb_ss_ep_comp_descriptor))
+ goto inv_length;
+ break;
+
case USB_DT_OTHER_SPEED_CONFIG:
case USB_DT_INTERFACE_POWER:
case USB_DT_DEBUG:
@@ -1579,60 +1876,76 @@
static int __ffs_data_got_descs(struct ffs_data *ffs,
char *const _data, size_t len)
{
- unsigned fs_count, hs_count;
- int fs_len, ret = -EINVAL;
- char *data = _data;
+ char *data = _data, *raw_descs;
+ unsigned counts[3], flags;
+ int ret = -EINVAL, i;
ENTER();
- if (unlikely(get_unaligned_le32(data) != FUNCTIONFS_DESCRIPTORS_MAGIC ||
- get_unaligned_le32(data + 4) != len))
+ if (get_unaligned_le32(data + 4) != len)
goto error;
- fs_count = get_unaligned_le32(data + 8);
- hs_count = get_unaligned_le32(data + 12);
- if (!fs_count && !hs_count)
- goto einval;
-
- data += 16;
- len -= 16;
-
- if (likely(fs_count)) {
- fs_len = ffs_do_descs(fs_count, data, len,
- __ffs_data_do_entity, ffs);
- if (unlikely(fs_len < 0)) {
- ret = fs_len;
+ switch (get_unaligned_le32(data)) {
+ case FUNCTIONFS_DESCRIPTORS_MAGIC:
+ flags = FUNCTIONFS_HAS_FS_DESC | FUNCTIONFS_HAS_HS_DESC;
+ data += 8;
+ len -= 8;
+ break;
+ case FUNCTIONFS_DESCRIPTORS_MAGIC_V2:
+ flags = get_unaligned_le32(data + 8);
+ if (flags & ~(FUNCTIONFS_HAS_FS_DESC |
+ FUNCTIONFS_HAS_HS_DESC |
+ FUNCTIONFS_HAS_SS_DESC)) {
+ ret = -ENOSYS;
goto error;
}
-
- data += fs_len;
- len -= fs_len;
- } else {
- fs_len = 0;
+ data += 12;
+ len -= 12;
+ break;
+ default:
+ goto error;
}
- if (likely(hs_count)) {
- ret = ffs_do_descs(hs_count, data, len,
- __ffs_data_do_entity, ffs);
- if (unlikely(ret < 0))
+ /* Read fs_count, hs_count and ss_count (if present) */
+ for (i = 0; i < 3; ++i) {
+ if (!(flags & (1 << i))) {
+ counts[i] = 0;
+ } else if (len < 4) {
goto error;
- } else {
- ret = 0;
+ } else {
+ counts[i] = get_unaligned_le32(data);
+ data += 4;
+ len -= 4;
+ }
}
- if (unlikely(len != ret))
- goto einval;
+ /* Read descriptors */
+ raw_descs = data;
+ for (i = 0; i < 3; ++i) {
+ if (!counts[i])
+ continue;
+ ret = ffs_do_descs(counts[i], data, len,
+ __ffs_data_do_entity, ffs);
+ if (ret < 0)
+ goto error;
+ data += ret;
+ len -= ret;
+ }
- ffs->raw_fs_descs_length = fs_len;
- ffs->raw_descs_length = fs_len + ret;
- ffs->raw_descs = _data;
- ffs->fs_descs_count = fs_count;
- ffs->hs_descs_count = hs_count;
+ if (raw_descs == data || len) {
+ ret = -EINVAL;
+ goto error;
+ }
+
+ ffs->raw_descs_data = _data;
+ ffs->raw_descs = raw_descs;
+ ffs->raw_descs_length = data - raw_descs;
+ ffs->fs_descs_count = counts[0];
+ ffs->hs_descs_count = counts[1];
+ ffs->ss_descs_count = counts[2];
return 0;
-einval:
- ret = -EINVAL;
error:
kfree(_data);
return ret;
@@ -1789,7 +2102,7 @@
* the source does nothing.
*/
if (ffs->setup_state == FFS_SETUP_PENDING)
- ffs->setup_state = FFS_SETUP_CANCELED;
+ ffs->setup_state = FFS_SETUP_CANCELLED;
switch (type) {
case FUNCTIONFS_RESUME:
@@ -1850,21 +2163,28 @@
struct usb_endpoint_descriptor *ds = (void *)desc;
struct ffs_function *func = priv;
struct ffs_ep *ffs_ep;
-
- /*
- * If hs_descriptors is not NULL then we are reading hs
- * descriptors now
- */
- const int isHS = func->function.hs_descriptors != NULL;
- unsigned idx;
+ unsigned ep_desc_id, idx;
+ static const char *speed_names[] = { "full", "high", "super" };
if (type != FFS_DESCRIPTOR)
return 0;
- if (isHS)
+ /*
+ * If ss_descriptors is not NULL, we are reading super speed
+ * descriptors; if hs_descriptors is not NULL, we are reading high
+ * speed descriptors; otherwise, we are reading full speed
+ * descriptors.
+ */
+ if (func->function.ss_descriptors) {
+ ep_desc_id = 2;
+ func->function.ss_descriptors[(long)valuep] = desc;
+ } else if (func->function.hs_descriptors) {
+ ep_desc_id = 1;
func->function.hs_descriptors[(long)valuep] = desc;
- else
+ } else {
+ ep_desc_id = 0;
func->function.fs_descriptors[(long)valuep] = desc;
+ }
if (!desc || desc->bDescriptorType != USB_DT_ENDPOINT)
return 0;
@@ -1872,13 +2192,13 @@
idx = (ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) - 1;
ffs_ep = func->eps + idx;
- if (unlikely(ffs_ep->descs[isHS])) {
- pr_vdebug("two %sspeed descriptors for EP %d\n",
- isHS ? "high" : "full",
+ if (unlikely(ffs_ep->descs[ep_desc_id])) {
+ pr_err("two %sspeed descriptors for EP %d\n",
+ speed_names[ep_desc_id],
ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
return -EINVAL;
}
- ffs_ep->descs[isHS] = ds;
+ ffs_ep->descs[ep_desc_id] = ds;
ffs_dump_mem(": Original ep desc", ds, ds->bLength);
if (ffs_ep->ep) {
@@ -2022,8 +2342,10 @@
const int full = !!func->ffs->fs_descs_count;
const int high = gadget_is_dualspeed(func->gadget) &&
func->ffs->hs_descs_count;
+ const int super = gadget_is_superspeed(func->gadget) &&
+ func->ffs->ss_descs_count;
- int ret;
+ int fs_len, hs_len, ret;
/* Make it a single chunk, less management later on */
vla_group(d);
@@ -2032,15 +2354,16 @@
full ? ffs->fs_descs_count + 1 : 0);
vla_item_with_sz(d, struct usb_descriptor_header *, hs_descs,
high ? ffs->hs_descs_count + 1 : 0);
+ vla_item_with_sz(d, struct usb_descriptor_header *, ss_descs,
+ super ? ffs->ss_descs_count + 1 : 0);
vla_item_with_sz(d, short, inums, ffs->interfaces_count);
- vla_item_with_sz(d, char, raw_descs,
- high ? ffs->raw_descs_length : ffs->raw_fs_descs_length);
+ vla_item_with_sz(d, char, raw_descs, ffs->raw_descs_length);
char *vlabuf;
ENTER();
- /* Only high speed but not supported by gadget? */
- if (unlikely(!(full | high)))
+ /* Has descriptors only for speeds gadget does not support */
+ if (unlikely(!(full | high | super)))
return -ENOTSUPP;
/* Allocate a single chunk, less management later on */
@@ -2050,8 +2373,10 @@
/* Zero */
memset(vla_ptr(vlabuf, d, eps), 0, d_eps__sz);
- memcpy(vla_ptr(vlabuf, d, raw_descs), ffs->raw_descs + 16,
- d_raw_descs__sz);
+ /* Copy descriptors */
+ memcpy(vla_ptr(vlabuf, d, raw_descs), ffs->raw_descs,
+ ffs->raw_descs_length);
+
memset(vla_ptr(vlabuf, d, inums), 0xff, d_inums__sz);
for (ret = ffs->eps_count; ret; --ret) {
struct ffs_ep *ptr;
@@ -2073,22 +2398,38 @@
*/
if (likely(full)) {
func->function.fs_descriptors = vla_ptr(vlabuf, d, fs_descs);
- ret = ffs_do_descs(ffs->fs_descs_count,
- vla_ptr(vlabuf, d, raw_descs),
- d_raw_descs__sz,
- __ffs_func_bind_do_descs, func);
- if (unlikely(ret < 0))
+ fs_len = ffs_do_descs(ffs->fs_descs_count,
+ vla_ptr(vlabuf, d, raw_descs),
+ d_raw_descs__sz,
+ __ffs_func_bind_do_descs, func);
+ if (unlikely(fs_len < 0)) {
+ ret = fs_len;
goto error;
+ }
} else {
- ret = 0;
+ fs_len = 0;
}
if (likely(high)) {
func->function.hs_descriptors = vla_ptr(vlabuf, d, hs_descs);
- ret = ffs_do_descs(ffs->hs_descs_count,
- vla_ptr(vlabuf, d, raw_descs) + ret,
- d_raw_descs__sz - ret,
- __ffs_func_bind_do_descs, func);
+ hs_len = ffs_do_descs(ffs->hs_descs_count,
+ vla_ptr(vlabuf, d, raw_descs) + fs_len,
+ d_raw_descs__sz - fs_len,
+ __ffs_func_bind_do_descs, func);
+ if (unlikely(hs_len < 0)) {
+ ret = hs_len;
+ goto error;
+ }
+ } else {
+ hs_len = 0;
+ }
+
+ if (likely(super)) {
+ func->function.ss_descriptors = vla_ptr(vlabuf, d, ss_descs);
+ ret = ffs_do_descs(ffs->ss_descs_count,
+ vla_ptr(vlabuf, d, raw_descs) + fs_len + hs_len,
+ d_raw_descs__sz - fs_len - hs_len,
+ __ffs_func_bind_do_descs, func);
if (unlikely(ret < 0))
goto error;
}
@@ -2099,7 +2440,8 @@
* now.
*/
ret = ffs_do_descs(ffs->fs_descs_count +
- (high ? ffs->hs_descs_count : 0),
+ (high ? ffs->hs_descs_count : 0) +
+ (super ? ffs->ss_descs_count : 0),
vla_ptr(vlabuf, d, raw_descs), d_raw_descs__sz,
__ffs_func_bind_do_nums, func);
if (unlikely(ret < 0))
@@ -2258,7 +2600,7 @@
static LIST_HEAD(ffs_devices);
-static struct ffs_dev *_ffs_find_dev(const char *name)
+static struct ffs_dev *_ffs_do_find_dev(const char *name)
{
struct ffs_dev *dev;
@@ -2275,7 +2617,7 @@
/*
* ffs_lock must be taken by the caller of this function
*/
-static struct ffs_dev *ffs_get_single_dev(void)
+static struct ffs_dev *_ffs_get_single_dev(void)
{
struct ffs_dev *dev;
@@ -2291,15 +2633,15 @@
/*
* ffs_lock must be taken by the caller of this function
*/
-static struct ffs_dev *ffs_find_dev(const char *name)
+static struct ffs_dev *_ffs_find_dev(const char *name)
{
struct ffs_dev *dev;
- dev = ffs_get_single_dev();
+ dev = _ffs_get_single_dev();
if (dev)
return dev;
- return _ffs_find_dev(name);
+ return _ffs_do_find_dev(name);
}
/* Configfs support *********************************************************/
@@ -2335,7 +2677,7 @@
opts = to_f_fs_opts(f);
ffs_dev_lock();
- ffs_free_dev(opts->dev);
+ _ffs_free_dev(opts->dev);
ffs_dev_unlock();
kfree(opts);
}
@@ -2390,7 +2732,7 @@
opts->func_inst.set_inst_name = ffs_set_inst_name;
opts->func_inst.free_func_inst = ffs_free_inst;
ffs_dev_lock();
- dev = ffs_alloc_dev();
+ dev = _ffs_alloc_dev();
ffs_dev_unlock();
if (IS_ERR(dev)) {
kfree(opts);
@@ -2446,6 +2788,7 @@
*/
func->function.fs_descriptors = NULL;
func->function.hs_descriptors = NULL;
+ func->function.ss_descriptors = NULL;
func->interfaces_nums = NULL;
ffs_event_add(ffs, FUNCTIONFS_UNBIND);
@@ -2478,12 +2821,12 @@
/*
* ffs_lock must be taken by the caller of this function
*/
-struct ffs_dev *ffs_alloc_dev(void)
+static struct ffs_dev *_ffs_alloc_dev(void)
{
struct ffs_dev *dev;
int ret;
- if (ffs_get_single_dev())
+ if (_ffs_get_single_dev())
return ERR_PTR(-EBUSY);
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
@@ -2511,10 +2854,10 @@
{
struct ffs_dev *existing;
- existing = _ffs_find_dev(name);
+ existing = _ffs_do_find_dev(name);
if (existing)
return -EBUSY;
-
+
dev->name = name;
return 0;
@@ -2555,7 +2898,7 @@
/*
* ffs_lock must be taken by the caller of this function
*/
-void ffs_free_dev(struct ffs_dev *dev)
+static void _ffs_free_dev(struct ffs_dev *dev)
{
list_del(&dev->entry);
if (dev->name_allocated)
@@ -2572,7 +2915,7 @@
ENTER();
ffs_dev_lock();
- ffs_dev = ffs_find_dev(dev_name);
+ ffs_dev = _ffs_find_dev(dev_name);
if (!ffs_dev)
ffs_dev = ERR_PTR(-ENODEV);
else if (ffs_dev->mounted)
@@ -2595,11 +2938,12 @@
ffs_dev_lock();
ffs_dev = ffs_data->private_data;
- if (ffs_dev)
+ if (ffs_dev) {
ffs_dev->mounted = false;
-
- if (ffs_dev->ffs_release_dev_callback)
- ffs_dev->ffs_release_dev_callback(ffs_dev);
+
+ if (ffs_dev->ffs_release_dev_callback)
+ ffs_dev->ffs_release_dev_callback(ffs_dev);
+ }
ffs_dev_unlock();
}
diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c
index f1a5919..df4a0dcb 100644
--- a/drivers/usb/gadget/f_subset.c
+++ b/drivers/usb/gadget/f_subset.c
@@ -276,7 +276,7 @@
}
net = gether_connect(&geth->port);
- return IS_ERR(net) ? PTR_ERR(net) : 0;
+ return PTR_RET(net);
}
static void geth_disable(struct usb_function *f)
diff --git a/drivers/usb/gadget/gr_udc.c b/drivers/usb/gadget/gr_udc.c
index 914cbd8..f984ee7 100644
--- a/drivers/usb/gadget/gr_udc.c
+++ b/drivers/usb/gadget/gr_udc.c
@@ -225,14 +225,8 @@
const char *name = "gr_udc_state";
dev->dfs_root = debugfs_create_dir(dev_name(dev->dev), NULL);
- if (IS_ERR(dev->dfs_root)) {
- dev_err(dev->dev, "Failed to create debugfs directory\n");
- return;
- }
- dev->dfs_state = debugfs_create_file(name, 0444, dev->dfs_root,
- dev, &gr_dfs_fops);
- if (IS_ERR(dev->dfs_state))
- dev_err(dev->dev, "Failed to create debugfs file %s\n", name);
+ dev->dfs_state = debugfs_create_file(name, 0444, dev->dfs_root, dev,
+ &gr_dfs_fops);
}
static void gr_dfs_delete(struct gr_udc *dev)
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index b94c049..b5be6f03 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -439,11 +439,9 @@
/* FIXME writebehind for O_NONBLOCK and poll(), qlen = 1 */
value = -ENOMEM;
- kbuf = kmalloc (len, GFP_KERNEL);
- if (!kbuf)
- goto free1;
- if (copy_from_user (kbuf, buf, len)) {
- value = -EFAULT;
+ kbuf = memdup_user(buf, len);
+ if (!kbuf) {
+ value = PTR_ERR(kbuf);
goto free1;
}
@@ -452,7 +450,6 @@
data->name, len, (int) value);
free1:
mutex_unlock(&data->lock);
- kfree (kbuf);
return value;
}
diff --git a/drivers/usb/gadget/lpc32xx_udc.c b/drivers/usb/gadget/lpc32xx_udc.c
index 049ebab..a139894 100644
--- a/drivers/usb/gadget/lpc32xx_udc.c
+++ b/drivers/usb/gadget/lpc32xx_udc.c
@@ -3295,9 +3295,9 @@
pll_set_fail:
clk_disable(udc->usb_pll_clk);
pll_enable_fail:
- clk_put(udc->usb_slv_clk);
-usb_otg_clk_get_fail:
clk_put(udc->usb_otg_clk);
+usb_otg_clk_get_fail:
+ clk_put(udc->usb_slv_clk);
usb_clk_get_fail:
clk_put(udc->usb_pll_clk);
pll_get_fail:
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 69b76ef..6474081 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -427,12 +427,17 @@
req->length = USB_BUFSIZE;
req->complete = rx_complete;
+ /* here, we unlock, and only unlock, to avoid deadlock. */
+ spin_unlock(&dev->lock);
error = usb_ep_queue(dev->out_ep, req, GFP_ATOMIC);
+ spin_lock(&dev->lock);
if (error) {
DBG(dev, "rx submit --> %d\n", error);
list_add(&req->list, &dev->rx_reqs);
break;
- } else {
+ }
+ /* if the req is empty, then add it into dev->rx_reqs_active. */
+ else if (list_empty(&req->list)) {
list_add(&req->list, &dev->rx_reqs_active);
}
}
@@ -1133,6 +1138,7 @@
NULL, "g_printer");
if (IS_ERR(dev->pdev)) {
ERROR(dev, "Failed to create device: g_printer\n");
+ status = PTR_ERR(dev->pdev);
goto fail;
}
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 1172eae..2a9cb67 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -617,7 +617,7 @@
to_write = DIV_ROUND_UP(to_write, 4);
data = hs_req->req.buf + buf_pos;
- writesl(hsotg->regs + EPFIFO(hs_ep->index), data, to_write);
+ iowrite32_rep(hsotg->regs + EPFIFO(hs_ep->index), data, to_write);
return (to_write >= can_write) ? -ENOSPC : 0;
}
@@ -720,8 +720,8 @@
ureq->length, ureq->actual);
if (0)
dev_dbg(hsotg->dev,
- "REQ buf %p len %d dma 0x%08x noi=%d zp=%d snok=%d\n",
- ureq->buf, length, ureq->dma,
+ "REQ buf %p len %d dma 0x%pad noi=%d zp=%d snok=%d\n",
+ ureq->buf, length, &ureq->dma,
ureq->no_interrupt, ureq->zero, ureq->short_not_ok);
maxreq = get_ep_limit(hs_ep);
@@ -789,8 +789,8 @@
dma_reg = dir_in ? DIEPDMA(index) : DOEPDMA(index);
writel(ureq->dma, hsotg->regs + dma_reg);
- dev_dbg(hsotg->dev, "%s: 0x%08x => 0x%08x\n",
- __func__, ureq->dma, dma_reg);
+ dev_dbg(hsotg->dev, "%s: 0x%pad => 0x%08x\n",
+ __func__, &ureq->dma, dma_reg);
}
ctrl |= DxEPCTL_EPEna; /* ensure ep enabled */
@@ -1186,6 +1186,41 @@
static void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg);
/**
+ * s3c_hsotg_stall_ep0 - stall ep0
+ * @hsotg: The device state
+ *
+ * Set stall for ep0 as response for setup request.
+ */
+static void s3c_hsotg_stall_ep0(struct s3c_hsotg *hsotg) {
+ struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
+ u32 reg;
+ u32 ctrl;
+
+ dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in);
+ reg = (ep0->dir_in) ? DIEPCTL0 : DOEPCTL0;
+
+ /*
+ * DxEPCTL_Stall will be cleared by EP once it has
+ * taken effect, so no need to clear later.
+ */
+
+ ctrl = readl(hsotg->regs + reg);
+ ctrl |= DxEPCTL_Stall;
+ ctrl |= DxEPCTL_CNAK;
+ writel(ctrl, hsotg->regs + reg);
+
+ dev_dbg(hsotg->dev,
+ "written DxEPCTL=0x%08x to %08x (DxEPCTL=0x%08x)\n",
+ ctrl, reg, readl(hsotg->regs + reg));
+
+ /*
+ * complete won't be called, so we enqueue
+ * setup request here
+ */
+ s3c_hsotg_enqueue_setup(hsotg);
+}
+
+/**
* s3c_hsotg_process_control - process a control request
* @hsotg: The device state
* @ctrl: The control request received
@@ -1262,38 +1297,8 @@
* so respond with a STALL for the status stage to indicate failure.
*/
- if (ret < 0) {
- u32 reg;
- u32 ctrl;
-
- dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in);
- reg = (ep0->dir_in) ? DIEPCTL0 : DOEPCTL0;
-
- /*
- * DxEPCTL_Stall will be cleared by EP once it has
- * taken effect, so no need to clear later.
- */
-
- ctrl = readl(hsotg->regs + reg);
- ctrl |= DxEPCTL_Stall;
- ctrl |= DxEPCTL_CNAK;
- writel(ctrl, hsotg->regs + reg);
-
- dev_dbg(hsotg->dev,
- "written DxEPCTL=0x%08x to %08x (DxEPCTL=0x%08x)\n",
- ctrl, reg, readl(hsotg->regs + reg));
-
- /*
- * don't believe we need to anything more to get the EP
- * to reply with a STALL packet
- */
-
- /*
- * complete won't be called, so we enqueue
- * setup request here
- */
- s3c_hsotg_enqueue_setup(hsotg);
- }
+ if (ret < 0)
+ s3c_hsotg_stall_ep0(hsotg);
}
/**
@@ -1488,7 +1493,7 @@
* note, we might over-write the buffer end by 3 bytes depending on
* alignment of the data.
*/
- readsl(fifo, hs_req->req.buf + read_ptr, to_read);
+ ioread32_rep(fifo, hs_req->req.buf + read_ptr, to_read);
}
/**
@@ -2832,6 +2837,15 @@
dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value);
+ if (index == 0) {
+ if (value)
+ s3c_hsotg_stall_ep0(hs);
+ else
+ dev_warn(hs->dev,
+ "%s: can't clear halt on ep0\n", __func__);
+ return 0;
+ }
+
/* write both IN and OUT control registers */
epreg = DIEPCTL(index);
@@ -3760,10 +3774,55 @@
return 0;
}
-#if 1
-#define s3c_hsotg_suspend NULL
-#define s3c_hsotg_resume NULL
-#endif
+static int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct s3c_hsotg *hsotg = platform_get_drvdata(pdev);
+ unsigned long flags;
+ int ret = 0;
+
+ if (hsotg->driver)
+ dev_info(hsotg->dev, "suspending usb gadget %s\n",
+ hsotg->driver->driver.name);
+
+ spin_lock_irqsave(&hsotg->lock, flags);
+ s3c_hsotg_disconnect(hsotg);
+ s3c_hsotg_phy_disable(hsotg);
+ hsotg->gadget.speed = USB_SPEED_UNKNOWN;
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+
+ if (hsotg->driver) {
+ int ep;
+ for (ep = 0; ep < hsotg->num_of_eps; ep++)
+ s3c_hsotg_ep_disable(&hsotg->eps[ep].ep);
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
+ hsotg->supplies);
+ }
+
+ return ret;
+}
+
+static int s3c_hsotg_resume(struct platform_device *pdev)
+{
+ struct s3c_hsotg *hsotg = platform_get_drvdata(pdev);
+ unsigned long flags;
+ int ret = 0;
+
+ if (hsotg->driver) {
+ dev_info(hsotg->dev, "resuming usb gadget %s\n",
+ hsotg->driver->driver.name);
+ ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies),
+ hsotg->supplies);
+ }
+
+ spin_lock_irqsave(&hsotg->lock, flags);
+ hsotg->last_rst = jiffies;
+ s3c_hsotg_phy_enable(hsotg);
+ s3c_hsotg_core_init(hsotg);
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+
+ return ret;
+}
#ifdef CONFIG_OF
static const struct of_device_id s3c_hsotg_of_ids[] = {
diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
index ea4bbfe..10c6a12 100644
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ b/drivers/usb/gadget/s3c-hsudc.c
@@ -1344,7 +1344,6 @@
return 0;
err_add_udc:
-err_add_device:
clk_disable(hsudc->uclk);
err_res:
if (!IS_ERR_OR_NULL(hsudc->transceiver))
diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c
index 0f8aad7..460c266 100644
--- a/drivers/usb/gadget/tcm_usb_gadget.c
+++ b/drivers/usb/gadget/tcm_usb_gadget.c
@@ -1613,7 +1613,7 @@
return ERR_PTR(-ENOMEM);
}
tport->tport_wwpn = wwpn;
- snprintf(tport->tport_name, sizeof(tport->tport_name), wnn_name);
+ snprintf(tport->tport_name, sizeof(tport->tport_name), "%s", wnn_name);
return &tport->tport_wwn;
}
diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
index b7d4f82..50d09c2 100644
--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -48,6 +48,8 @@
#define UETH__VERSION "29-May-2008"
+#define GETHER_NAPI_WEIGHT 32
+
struct eth_dev {
/* lock is held while accessing port_usb
*/
@@ -72,6 +74,7 @@
struct sk_buff_head *list);
struct work_struct work;
+ struct napi_struct rx_napi;
unsigned long todo;
#define WORK_RX_MEMORY 0
@@ -253,18 +256,16 @@
DBG(dev, "rx submit --> %d\n", retval);
if (skb)
dev_kfree_skb_any(skb);
- spin_lock_irqsave(&dev->req_lock, flags);
- list_add(&req->list, &dev->rx_reqs);
- spin_unlock_irqrestore(&dev->req_lock, flags);
}
return retval;
}
static void rx_complete(struct usb_ep *ep, struct usb_request *req)
{
- struct sk_buff *skb = req->context, *skb2;
+ struct sk_buff *skb = req->context;
struct eth_dev *dev = ep->driver_data;
int status = req->status;
+ bool rx_queue = 0;
switch (status) {
@@ -288,30 +289,8 @@
} else {
skb_queue_tail(&dev->rx_frames, skb);
}
- skb = NULL;
-
- skb2 = skb_dequeue(&dev->rx_frames);
- while (skb2) {
- if (status < 0
- || ETH_HLEN > skb2->len
- || skb2->len > VLAN_ETH_FRAME_LEN) {
- dev->net->stats.rx_errors++;
- dev->net->stats.rx_length_errors++;
- DBG(dev, "rx length %d\n", skb2->len);
- dev_kfree_skb_any(skb2);
- goto next_frame;
- }
- skb2->protocol = eth_type_trans(skb2, dev->net);
- dev->net->stats.rx_packets++;
- dev->net->stats.rx_bytes += skb2->len;
-
- /* no buffer copies needed, unless hardware can't
- * use skb buffers.
- */
- status = netif_rx(skb2);
-next_frame:
- skb2 = skb_dequeue(&dev->rx_frames);
- }
+ if (!status)
+ rx_queue = 1;
break;
/* software-driven interface shutdown */
@@ -334,22 +313,20 @@
/* FALLTHROUGH */
default:
+ rx_queue = 1;
+ dev_kfree_skb_any(skb);
dev->net->stats.rx_errors++;
DBG(dev, "rx status %d\n", status);
break;
}
- if (skb)
- dev_kfree_skb_any(skb);
- if (!netif_running(dev->net)) {
clean:
spin_lock(&dev->req_lock);
list_add(&req->list, &dev->rx_reqs);
spin_unlock(&dev->req_lock);
- req = NULL;
- }
- if (req)
- rx_submit(dev, req, GFP_ATOMIC);
+
+ if (rx_queue && likely(napi_schedule_prep(&dev->rx_napi)))
+ __napi_schedule(&dev->rx_napi);
}
static int prealloc(struct list_head *list, struct usb_ep *ep, unsigned n)
@@ -414,16 +391,24 @@
{
struct usb_request *req;
unsigned long flags;
+ int rx_counts = 0;
/* fill unused rxq slots with some skb */
spin_lock_irqsave(&dev->req_lock, flags);
while (!list_empty(&dev->rx_reqs)) {
+
+ if (++rx_counts > qlen(dev->gadget, dev->qmult))
+ break;
+
req = container_of(dev->rx_reqs.next,
struct usb_request, list);
list_del_init(&req->list);
spin_unlock_irqrestore(&dev->req_lock, flags);
if (rx_submit(dev, req, gfp_flags) < 0) {
+ spin_lock_irqsave(&dev->req_lock, flags);
+ list_add(&req->list, &dev->rx_reqs);
+ spin_unlock_irqrestore(&dev->req_lock, flags);
defer_kevent(dev, WORK_RX_MEMORY);
return;
}
@@ -433,6 +418,41 @@
spin_unlock_irqrestore(&dev->req_lock, flags);
}
+static int gether_poll(struct napi_struct *napi, int budget)
+{
+ struct eth_dev *dev = container_of(napi, struct eth_dev, rx_napi);
+ struct sk_buff *skb;
+ unsigned int work_done = 0;
+ int status = 0;
+
+ while ((skb = skb_dequeue(&dev->rx_frames))) {
+ if (status < 0
+ || ETH_HLEN > skb->len
+ || skb->len > VLAN_ETH_FRAME_LEN) {
+ dev->net->stats.rx_errors++;
+ dev->net->stats.rx_length_errors++;
+ DBG(dev, "rx length %d\n", skb->len);
+ dev_kfree_skb_any(skb);
+ continue;
+ }
+ skb->protocol = eth_type_trans(skb, dev->net);
+ dev->net->stats.rx_packets++;
+ dev->net->stats.rx_bytes += skb->len;
+
+ status = netif_rx_ni(skb);
+ }
+
+ if (netif_running(dev->net)) {
+ rx_fill(dev, GFP_KERNEL);
+ work_done++;
+ }
+
+ if (work_done < budget)
+ napi_complete(&dev->rx_napi);
+
+ return work_done;
+}
+
static void eth_work(struct work_struct *work)
{
struct eth_dev *dev = container_of(work, struct eth_dev, work);
@@ -625,6 +645,7 @@
/* and open the tx floodgates */
atomic_set(&dev->tx_qlen, 0);
netif_wake_queue(dev->net);
+ napi_enable(&dev->rx_napi);
}
static int eth_open(struct net_device *net)
@@ -651,6 +672,7 @@
unsigned long flags;
VDBG(dev, "%s\n", __func__);
+ napi_disable(&dev->rx_napi);
netif_stop_queue(net);
DBG(dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld\n",
@@ -768,6 +790,7 @@
return ERR_PTR(-ENOMEM);
dev = netdev_priv(net);
+ netif_napi_add(net, &dev->rx_napi, gether_poll, GETHER_NAPI_WEIGHT);
spin_lock_init(&dev->lock);
spin_lock_init(&dev->req_lock);
INIT_WORK(&dev->work, eth_work);
@@ -830,6 +853,7 @@
return ERR_PTR(-ENOMEM);
dev = netdev_priv(net);
+ netif_napi_add(net, &dev->rx_napi, gether_poll, GETHER_NAPI_WEIGHT);
spin_lock_init(&dev->lock);
spin_lock_init(&dev->req_lock);
INIT_WORK(&dev->work, eth_work);
@@ -1113,6 +1137,7 @@
{
struct eth_dev *dev = link->ioport;
struct usb_request *req;
+ struct sk_buff *skb;
WARN_ON(!dev);
if (!dev)
@@ -1139,6 +1164,12 @@
spin_lock(&dev->req_lock);
}
spin_unlock(&dev->req_lock);
+
+ spin_lock(&dev->rx_frames.lock);
+ while ((skb = __skb_dequeue(&dev->rx_frames)))
+ dev_kfree_skb_any(skb);
+ spin_unlock(&dev->rx_frames.lock);
+
link->in_ep->driver_data = NULL;
link->in_ep->desc = NULL;
diff --git a/drivers/usb/gadget/u_fs.h b/drivers/usb/gadget/u_fs.h
index bc2d371..bf0ba37 100644
--- a/drivers/usb/gadget/u_fs.h
+++ b/drivers/usb/gadget/u_fs.h
@@ -65,10 +65,8 @@
mutex_unlock(&ffs_lock);
}
-struct ffs_dev *ffs_alloc_dev(void);
int ffs_name_dev(struct ffs_dev *dev, const char *name);
int ffs_single_dev(struct ffs_dev *dev);
-void ffs_free_dev(struct ffs_dev *dev);
struct ffs_epfile;
struct ffs_function;
@@ -125,7 +123,7 @@
* setup. If this state is set read/write on ep0 return
* -EIDRM. This state is only set when adding event.
*/
- FFS_SETUP_CANCELED
+ FFS_SETUP_CANCELLED
};
struct ffs_data {
@@ -156,7 +154,6 @@
*/
struct usb_request *ep0req; /* P: mutex */
struct completion ep0req_completion; /* P: mutex */
- int ep0req_status; /* P: mutex */
/* reference counter */
atomic_t ref;
@@ -168,19 +165,18 @@
/*
* Possible transitions:
- * + FFS_NO_SETUP -> FFS_SETUP_PENDING -- P: ev.waitq.lock
+ * + FFS_NO_SETUP -> FFS_SETUP_PENDING -- P: ev.waitq.lock
* happens only in ep0 read which is P: mutex
- * + FFS_SETUP_PENDING -> FFS_NO_SETUP -- P: ev.waitq.lock
+ * + FFS_SETUP_PENDING -> FFS_NO_SETUP -- P: ev.waitq.lock
* happens only in ep0 i/o which is P: mutex
- * + FFS_SETUP_PENDING -> FFS_SETUP_CANCELED -- P: ev.waitq.lock
- * + FFS_SETUP_CANCELED -> FFS_NO_SETUP -- cmpxchg
+ * + FFS_SETUP_PENDING -> FFS_SETUP_CANCELLED -- P: ev.waitq.lock
+ * + FFS_SETUP_CANCELLED -> FFS_NO_SETUP -- cmpxchg
+ *
+ * This field should never be accessed directly and instead
+ * ffs_setup_state_clear_cancelled function should be used.
*/
enum ffs_setup_state setup_state;
-#define FFS_SETUP_STATE(ffs) \
- ((enum ffs_setup_state)cmpxchg(&(ffs)->setup_state, \
- FFS_SETUP_CANCELED, FFS_NO_SETUP))
-
/* Events & such. */
struct {
u8 types[4];
@@ -210,16 +206,16 @@
/* filled by __ffs_data_got_descs() */
/*
- * Real descriptors are 16 bytes after raw_descs (so you need
- * to skip 16 bytes (ie. ffs->raw_descs + 16) to get to the
- * first full speed descriptor). raw_descs_length and
- * raw_fs_descs_length do not have those 16 bytes added.
+ * raw_descs is what you kfree, real_descs points inside of raw_descs,
+ * where full speed, high speed and super speed descriptors start.
+ * real_descs_length is the length of all those descriptors.
*/
+ const void *raw_descs_data;
const void *raw_descs;
unsigned raw_descs_length;
- unsigned raw_fs_descs_length;
unsigned fs_descs_count;
unsigned hs_descs_count;
+ unsigned ss_descs_count;
unsigned short strings_count;
unsigned short interfaces_count;
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index a9707da..e22b826 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -584,7 +584,6 @@
config USB_U132_HCD
tristate "Elan U132 Adapter Host Controller"
depends on USB_FTDI_ELAN
- default M
help
The U132 adapter is a USB to CardBus adapter specifically designed
for PC cards that contain an OHCI host controller. Typical PC cards
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 01536cf..b3a0e11 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -3,6 +3,7 @@
*
* Copyright 2007 Steven Brown <sbrown@cortland.com>
* Copyright 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
+ * Copyright 2014 Hans de Goede <hdegoede@redhat.com>
*
* Derived from the ohci-ssb driver
* Copyright 2007 Michael Buesch <m@bues.ch>
@@ -18,6 +19,7 @@
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
+#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/kernel.h>
@@ -25,6 +27,7 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
@@ -33,6 +36,13 @@
#include "ehci.h"
#define DRIVER_DESC "EHCI generic platform driver"
+#define EHCI_MAX_CLKS 3
+#define hcd_to_ehci_priv(h) ((struct ehci_platform_priv *)hcd_to_ehci(h)->priv)
+
+struct ehci_platform_priv {
+ struct clk *clks[EHCI_MAX_CLKS];
+ struct phy *phy;
+};
static const char hcd_name[] = "ehci-platform";
@@ -45,8 +55,6 @@
hcd->has_tt = pdata->has_tt;
ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
- ehci->big_endian_desc = pdata->big_endian_desc;
- ehci->big_endian_mmio = pdata->big_endian_mmio;
if (pdata->pre_setup) {
retval = pdata->pre_setup(hcd);
@@ -64,38 +72,91 @@
return 0;
}
+static int ehci_platform_power_on(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk, ret;
+
+ for (clk = 0; clk < EHCI_MAX_CLKS && priv->clks[clk]; clk++) {
+ ret = clk_prepare_enable(priv->clks[clk]);
+ if (ret)
+ goto err_disable_clks;
+ }
+
+ if (priv->phy) {
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto err_disable_clks;
+
+ ret = phy_power_on(priv->phy);
+ if (ret)
+ goto err_exit_phy;
+ }
+
+ return 0;
+
+err_exit_phy:
+ phy_exit(priv->phy);
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(priv->clks[clk]);
+
+ return ret;
+}
+
+static void ehci_platform_power_off(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk;
+
+ if (priv->phy) {
+ phy_power_off(priv->phy);
+ phy_exit(priv->phy);
+ }
+
+ for (clk = EHCI_MAX_CLKS - 1; clk >= 0; clk--)
+ if (priv->clks[clk])
+ clk_disable_unprepare(priv->clks[clk]);
+}
+
static struct hc_driver __read_mostly ehci_platform_hc_driver;
static const struct ehci_driver_overrides platform_overrides __initconst = {
- .reset = ehci_platform_reset,
+ .reset = ehci_platform_reset,
+ .extra_priv_size = sizeof(struct ehci_platform_priv),
};
-static struct usb_ehci_pdata ehci_platform_defaults;
+static struct usb_ehci_pdata ehci_platform_defaults = {
+ .power_on = ehci_platform_power_on,
+ .power_suspend = ehci_platform_power_off,
+ .power_off = ehci_platform_power_off,
+};
static int ehci_platform_probe(struct platform_device *dev)
{
struct usb_hcd *hcd;
struct resource *res_mem;
- struct usb_ehci_pdata *pdata;
- int irq;
- int err;
+ struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct ehci_platform_priv *priv;
+ struct ehci_hcd *ehci;
+ int err, irq, clk = 0;
if (usb_disabled())
return -ENODEV;
/*
- * use reasonable defaults so platforms don't have to provide these.
- * with DT probing on ARM, none of these are set.
+ * Use reasonable defaults so platforms don't have to provide these
+ * with DT probing on ARM.
*/
- if (!dev_get_platdata(&dev->dev))
- dev->dev.platform_data = &ehci_platform_defaults;
+ if (!pdata)
+ pdata = &ehci_platform_defaults;
err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
if (err)
return err;
- pdata = dev_get_platdata(&dev->dev);
-
irq = platform_get_irq(dev, 0);
if (irq < 0) {
dev_err(&dev->dev, "no irq provided");
@@ -107,17 +168,72 @@
return -ENXIO;
}
+ hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ platform_set_drvdata(dev, hcd);
+ dev->dev.platform_data = pdata;
+ priv = hcd_to_ehci_priv(hcd);
+ ehci = hcd_to_ehci(hcd);
+
+ if (pdata == &ehci_platform_defaults && dev->dev.of_node) {
+ if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
+ ehci->big_endian_mmio = 1;
+
+ if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
+ ehci->big_endian_desc = 1;
+
+ if (of_property_read_bool(dev->dev.of_node, "big-endian"))
+ ehci->big_endian_mmio = ehci->big_endian_desc = 1;
+
+ priv->phy = devm_phy_get(&dev->dev, "usb");
+ if (IS_ERR(priv->phy)) {
+ err = PTR_ERR(priv->phy);
+ if (err == -EPROBE_DEFER)
+ goto err_put_hcd;
+ priv->phy = NULL;
+ }
+
+ for (clk = 0; clk < EHCI_MAX_CLKS; clk++) {
+ priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
+ if (IS_ERR(priv->clks[clk])) {
+ err = PTR_ERR(priv->clks[clk]);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->clks[clk] = NULL;
+ break;
+ }
+ }
+ }
+
+ if (pdata->big_endian_desc)
+ ehci->big_endian_desc = 1;
+ if (pdata->big_endian_mmio)
+ ehci->big_endian_mmio = 1;
+
+#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
+ if (ehci->big_endian_mmio) {
+ dev_err(&dev->dev,
+ "Error: CONFIG_USB_EHCI_BIG_ENDIAN_MMIO not set\n");
+ err = -EINVAL;
+ goto err_put_clks;
+ }
+#endif
+#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_DESC
+ if (ehci->big_endian_desc) {
+ dev_err(&dev->dev,
+ "Error: CONFIG_USB_EHCI_BIG_ENDIAN_DESC not set\n");
+ err = -EINVAL;
+ goto err_put_clks;
+ }
+#endif
+
if (pdata->power_on) {
err = pdata->power_on(dev);
if (err < 0)
- return err;
- }
-
- hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
- dev_name(&dev->dev));
- if (!hcd) {
- err = -ENOMEM;
- goto err_power;
+ goto err_put_clks;
}
hcd->rsrc_start = res_mem->start;
@@ -126,22 +242,28 @@
hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
- goto err_put_hcd;
+ goto err_power;
}
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err)
- goto err_put_hcd;
+ goto err_power;
device_wakeup_enable(hcd->self.controller);
platform_set_drvdata(dev, hcd);
return err;
-err_put_hcd:
- usb_put_hcd(hcd);
err_power:
if (pdata->power_off)
pdata->power_off(dev);
+err_put_clks:
+ while (--clk >= 0)
+ clk_put(priv->clks[clk]);
+err_put_hcd:
+ if (pdata == &ehci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ usb_put_hcd(hcd);
return err;
}
@@ -150,13 +272,19 @@
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd);
+ int clk;
usb_remove_hcd(hcd);
- usb_put_hcd(hcd);
if (pdata->power_off)
pdata->power_off(dev);
+ for (clk = 0; clk < EHCI_MAX_CLKS && priv->clks[clk]; clk++)
+ clk_put(priv->clks[clk]);
+
+ usb_put_hcd(hcd);
+
if (pdata == &ehci_platform_defaults)
dev->dev.platform_data = NULL;
@@ -207,8 +335,10 @@
static const struct of_device_id vt8500_ehci_ids[] = {
{ .compatible = "via,vt8500-ehci", },
{ .compatible = "wm,prizm-ehci", },
+ { .compatible = "generic-ehci", },
{}
};
+MODULE_DEVICE_TABLE(of, vt8500_ehci_ids);
static const struct platform_device_id ehci_platform_table[] = {
{ "ehci-platform", 0 },
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index af28b74..27ac6ad 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -38,10 +38,6 @@
#include "ehci.h"
-#define TEGRA_USB_BASE 0xC5000000
-#define TEGRA_USB2_BASE 0xC5004000
-#define TEGRA_USB3_BASE 0xC5008000
-
#define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E)
#define TEGRA_USB_DMA_ALIGN 32
diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c
index e076699..d0d8fad 100644
--- a/drivers/usb/host/hwa-hc.c
+++ b/drivers/usb/host/hwa-hc.c
@@ -261,8 +261,44 @@
dev_err(dev, "cannot listen to notifications: %d\n", result);
goto error_stop;
}
+ /*
+ * If WUSB_QUIRK_ALEREON_HWA_DISABLE_XFER_NOTIFICATIONS is set,
+ * disable transfer notifications.
+ */
+ if (hwahc->wa.quirks &
+ WUSB_QUIRK_ALEREON_HWA_DISABLE_XFER_NOTIFICATIONS) {
+ struct usb_host_interface *cur_altsetting =
+ hwahc->wa.usb_iface->cur_altsetting;
+
+ result = usb_control_msg(hwahc->wa.usb_dev,
+ usb_sndctrlpipe(hwahc->wa.usb_dev, 0),
+ WA_REQ_ALEREON_DISABLE_XFER_NOTIFICATIONS,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE,
+ WA_REQ_ALEREON_FEATURE_SET,
+ cur_altsetting->desc.bInterfaceNumber,
+ NULL, 0,
+ USB_CTRL_SET_TIMEOUT);
+ /*
+ * If we successfully sent the control message, start DTI here
+ * because no transfer notifications will be received which is
+ * where DTI is normally started.
+ */
+ if (result == 0)
+ result = wa_dti_start(&hwahc->wa);
+ else
+ result = 0; /* OK. Continue normally. */
+
+ if (result < 0) {
+ dev_err(dev, "cannot start DTI: %d\n", result);
+ goto error_dti_start;
+ }
+ }
+
return result;
+error_dti_start:
+ wa_nep_disarm(&hwahc->wa);
error_stop:
__wa_clear_feature(&hwahc->wa, WA_ENABLE);
return result;
@@ -827,10 +863,12 @@
static struct usb_device_id hwahc_id_table[] = {
/* Alereon 5310 */
{ USB_DEVICE_AND_INTERFACE_INFO(0x13dc, 0x5310, 0xe0, 0x02, 0x01),
- .driver_info = WUSB_QUIRK_ALEREON_HWA_CONCAT_ISOC },
+ .driver_info = WUSB_QUIRK_ALEREON_HWA_CONCAT_ISOC |
+ WUSB_QUIRK_ALEREON_HWA_DISABLE_XFER_NOTIFICATIONS },
/* Alereon 5611 */
{ USB_DEVICE_AND_INTERFACE_INFO(0x13dc, 0x5611, 0xe0, 0x02, 0x01),
- .driver_info = WUSB_QUIRK_ALEREON_HWA_CONCAT_ISOC },
+ .driver_info = WUSB_QUIRK_ALEREON_HWA_CONCAT_ISOC |
+ WUSB_QUIRK_ALEREON_HWA_DISABLE_XFER_NOTIFICATIONS },
/* FIXME: use class labels for this */
{ USB_INTERFACE_INFO(0xe0, 0x02, 0x01), },
{},
diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index 68f674c..b6002c9 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -3,6 +3,7 @@
*
* Copyright 2007 Michael Buesch <m@bues.ch>
* Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
+ * Copyright 2014 Hans de Goede <hdegoede@redhat.com>
*
* Derived from the OCHI-SSB driver
* Derived from the OHCI-PCI driver
@@ -14,11 +15,14 @@
* Licensed under the GNU/GPL. See COPYING for details.
*/
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
#include <linux/hrtimer.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
+#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/usb/ohci_pdriver.h>
#include <linux/usb.h>
@@ -27,6 +31,13 @@
#include "ohci.h"
#define DRIVER_DESC "OHCI generic platform driver"
+#define OHCI_MAX_CLKS 3
+#define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)
+
+struct ohci_platform_priv {
+ struct clk *clks[OHCI_MAX_CLKS];
+ struct phy *phy;
+};
static const char hcd_name[] = "ohci-platform";
@@ -36,10 +47,6 @@
struct usb_ohci_pdata *pdata = dev_get_platdata(&pdev->dev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- if (pdata->big_endian_desc)
- ohci->flags |= OHCI_QUIRK_BE_DESC;
- if (pdata->big_endian_mmio)
- ohci->flags |= OHCI_QUIRK_BE_MMIO;
if (pdata->no_big_frame_no)
ohci->flags |= OHCI_QUIRK_FRAME_NO;
if (pdata->num_ports)
@@ -48,11 +55,67 @@
return ohci_setup(hcd);
}
+static int ohci_platform_power_on(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk, ret;
+
+ for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
+ ret = clk_prepare_enable(priv->clks[clk]);
+ if (ret)
+ goto err_disable_clks;
+ }
+
+ if (priv->phy) {
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto err_disable_clks;
+
+ ret = phy_power_on(priv->phy);
+ if (ret)
+ goto err_exit_phy;
+ }
+
+ return 0;
+
+err_exit_phy:
+ phy_exit(priv->phy);
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(priv->clks[clk]);
+
+ return ret;
+}
+
+static void ohci_platform_power_off(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk;
+
+ if (priv->phy) {
+ phy_power_off(priv->phy);
+ phy_exit(priv->phy);
+ }
+
+ for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
+ if (priv->clks[clk])
+ clk_disable_unprepare(priv->clks[clk]);
+}
+
static struct hc_driver __read_mostly ohci_platform_hc_driver;
static const struct ohci_driver_overrides platform_overrides __initconst = {
- .product_desc = "Generic Platform OHCI controller",
- .reset = ohci_platform_reset,
+ .product_desc = "Generic Platform OHCI controller",
+ .reset = ohci_platform_reset,
+ .extra_priv_size = sizeof(struct ohci_platform_priv),
+};
+
+static struct usb_ohci_pdata ohci_platform_defaults = {
+ .power_on = ohci_platform_power_on,
+ .power_suspend = ohci_platform_power_off,
+ .power_off = ohci_platform_power_off,
};
static int ohci_platform_probe(struct platform_device *dev)
@@ -60,17 +123,24 @@
struct usb_hcd *hcd;
struct resource *res_mem;
struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
- int irq;
- int err = -ENOMEM;
-
- if (!pdata) {
- WARN_ON(1);
- return -ENODEV;
- }
+ struct ohci_platform_priv *priv;
+ struct ohci_hcd *ohci;
+ int err, irq, clk = 0;
if (usb_disabled())
return -ENODEV;
+ /*
+ * Use reasonable defaults so platforms don't have to provide these
+ * with DT probing on ARM.
+ */
+ if (!pdata)
+ pdata = &ohci_platform_defaults;
+
+ err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
+ if (err)
+ return err;
+
irq = platform_get_irq(dev, 0);
if (irq < 0) {
dev_err(&dev->dev, "no irq provided");
@@ -83,17 +153,72 @@
return -ENXIO;
}
+ hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ platform_set_drvdata(dev, hcd);
+ dev->dev.platform_data = pdata;
+ priv = hcd_to_ohci_priv(hcd);
+ ohci = hcd_to_ohci(hcd);
+
+ if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
+ if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
+ ohci->flags |= OHCI_QUIRK_BE_MMIO;
+
+ if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
+ ohci->flags |= OHCI_QUIRK_BE_DESC;
+
+ if (of_property_read_bool(dev->dev.of_node, "big-endian"))
+ ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
+
+ priv->phy = devm_phy_get(&dev->dev, "usb");
+ if (IS_ERR(priv->phy)) {
+ err = PTR_ERR(priv->phy);
+ if (err == -EPROBE_DEFER)
+ goto err_put_hcd;
+ priv->phy = NULL;
+ }
+
+ for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
+ priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
+ if (IS_ERR(priv->clks[clk])) {
+ err = PTR_ERR(priv->clks[clk]);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->clks[clk] = NULL;
+ break;
+ }
+ }
+ }
+
+ if (pdata->big_endian_desc)
+ ohci->flags |= OHCI_QUIRK_BE_DESC;
+ if (pdata->big_endian_mmio)
+ ohci->flags |= OHCI_QUIRK_BE_MMIO;
+
+#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
+ if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
+ dev_err(&dev->dev,
+ "Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
+ err = -EINVAL;
+ goto err_put_clks;
+ }
+#endif
+#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
+ if (ohci->flags & OHCI_QUIRK_BE_DESC) {
+ dev_err(&dev->dev,
+ "Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
+ err = -EINVAL;
+ goto err_put_clks;
+ }
+#endif
+
if (pdata->power_on) {
err = pdata->power_on(dev);
if (err < 0)
- return err;
- }
-
- hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
- dev_name(&dev->dev));
- if (!hcd) {
- err = -ENOMEM;
- goto err_power;
+ goto err_put_clks;
}
hcd->rsrc_start = res_mem->start;
@@ -102,11 +227,11 @@
hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
- goto err_put_hcd;
+ goto err_power;
}
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err)
- goto err_put_hcd;
+ goto err_power;
device_wakeup_enable(hcd->self.controller);
@@ -114,11 +239,17 @@
return err;
-err_put_hcd:
- usb_put_hcd(hcd);
err_power:
if (pdata->power_off)
pdata->power_off(dev);
+err_put_clks:
+ while (--clk >= 0)
+ clk_put(priv->clks[clk]);
+err_put_hcd:
+ if (pdata == &ohci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ usb_put_hcd(hcd);
return err;
}
@@ -127,13 +258,22 @@
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk;
usb_remove_hcd(hcd);
- usb_put_hcd(hcd);
if (pdata->power_off)
pdata->power_off(dev);
+ for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
+ clk_put(priv->clks[clk]);
+
+ usb_put_hcd(hcd);
+
+ if (pdata == &ohci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
return 0;
}
@@ -180,6 +320,12 @@
#define ohci_platform_resume NULL
#endif /* CONFIG_PM */
+static const struct of_device_id ohci_platform_ids[] = {
+ { .compatible = "generic-ohci", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ohci_platform_ids);
+
static const struct platform_device_id ohci_platform_table[] = {
{ "ohci-platform", 0 },
{ }
@@ -200,6 +346,7 @@
.owner = THIS_MODULE,
.name = "ohci-platform",
.pm = &ohci_platform_pm_ops,
+ .of_match_table = ohci_platform_ids,
}
};
diff --git a/drivers/usb/host/uhci-platform.c b/drivers/usb/host/uhci-platform.c
index 44e6c9d..01833ab 100644
--- a/drivers/usb/host/uhci-platform.c
+++ b/drivers/usb/host/uhci-platform.c
@@ -148,6 +148,7 @@
}
static const struct of_device_id platform_uhci_ids[] = {
+ { .compatible = "generic-uhci", },
{ .compatible = "platform-uhci", },
{}
};
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 9992fbf..1ad6bc1 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -732,9 +732,11 @@
/* Set the U1 and U2 exit latencies. */
memcpy(buf, &usb_bos_descriptor,
USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE);
- temp = readl(&xhci->cap_regs->hcs_params3);
- buf[12] = HCS_U1_LATENCY(temp);
- put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
+ if ((xhci->quirks & XHCI_LPM_SUPPORT)) {
+ temp = readl(&xhci->cap_regs->hcs_params3);
+ buf[12] = HCS_U1_LATENCY(temp);
+ put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
+ }
/* Indicate whether the host has LTM support. */
temp = readl(&xhci->cap_regs->hcc_params);
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index bce4391..c089668 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -149,14 +149,140 @@
}
}
+/*
+ * We need a radix tree for mapping physical addresses of TRBs to which stream
+ * ID they belong to. We need to do this because the host controller won't tell
+ * us which stream ring the TRB came from. We could store the stream ID in an
+ * event data TRB, but that doesn't help us for the cancellation case, since the
+ * endpoint may stop before it reaches that event data TRB.
+ *
+ * The radix tree maps the upper portion of the TRB DMA address to a ring
+ * segment that has the same upper portion of DMA addresses. For example, say I
+ * have segments of size 1KB, that are always 1KB aligned. A segment may
+ * start at 0x10c91000 and end at 0x10c913f0. If I use the upper 10 bits, the
+ * key to the stream ID is 0x43244. I can use the DMA address of the TRB to
+ * pass the radix tree a key to get the right stream ID:
+ *
+ * 0x10c90fff >> 10 = 0x43243
+ * 0x10c912c0 >> 10 = 0x43244
+ * 0x10c91400 >> 10 = 0x43245
+ *
+ * Obviously, only those TRBs with DMA addresses that are within the segment
+ * will make the radix tree return the stream ID for that ring.
+ *
+ * Caveats for the radix tree:
+ *
+ * The radix tree uses an unsigned long as a key pair. On 32-bit systems, an
+ * unsigned long will be 32-bits; on a 64-bit system an unsigned long will be
+ * 64-bits. Since we only request 32-bit DMA addresses, we can use that as the
+ * key on 32-bit or 64-bit systems (it would also be fine if we asked for 64-bit
+ * PCI DMA addresses on a 64-bit system). There might be a problem on 32-bit
+ * extended systems (where the DMA address can be bigger than 32-bits),
+ * if we allow the PCI dma mask to be bigger than 32-bits. So don't do that.
+ */
+static int xhci_insert_segment_mapping(struct radix_tree_root *trb_address_map,
+ struct xhci_ring *ring,
+ struct xhci_segment *seg,
+ gfp_t mem_flags)
+{
+ unsigned long key;
+ int ret;
+
+ key = (unsigned long)(seg->dma >> TRB_SEGMENT_SHIFT);
+ /* Skip any segments that were already added. */
+ if (radix_tree_lookup(trb_address_map, key))
+ return 0;
+
+ ret = radix_tree_maybe_preload(mem_flags);
+ if (ret)
+ return ret;
+ ret = radix_tree_insert(trb_address_map,
+ key, ring);
+ radix_tree_preload_end();
+ return ret;
+}
+
+static void xhci_remove_segment_mapping(struct radix_tree_root *trb_address_map,
+ struct xhci_segment *seg)
+{
+ unsigned long key;
+
+ key = (unsigned long)(seg->dma >> TRB_SEGMENT_SHIFT);
+ if (radix_tree_lookup(trb_address_map, key))
+ radix_tree_delete(trb_address_map, key);
+}
+
+static int xhci_update_stream_segment_mapping(
+ struct radix_tree_root *trb_address_map,
+ struct xhci_ring *ring,
+ struct xhci_segment *first_seg,
+ struct xhci_segment *last_seg,
+ gfp_t mem_flags)
+{
+ struct xhci_segment *seg;
+ struct xhci_segment *failed_seg;
+ int ret;
+
+ if (WARN_ON_ONCE(trb_address_map == NULL))
+ return 0;
+
+ seg = first_seg;
+ do {
+ ret = xhci_insert_segment_mapping(trb_address_map,
+ ring, seg, mem_flags);
+ if (ret)
+ goto remove_streams;
+ if (seg == last_seg)
+ return 0;
+ seg = seg->next;
+ } while (seg != first_seg);
+
+ return 0;
+
+remove_streams:
+ failed_seg = seg;
+ seg = first_seg;
+ do {
+ xhci_remove_segment_mapping(trb_address_map, seg);
+ if (seg == failed_seg)
+ return ret;
+ seg = seg->next;
+ } while (seg != first_seg);
+
+ return ret;
+}
+
+static void xhci_remove_stream_mapping(struct xhci_ring *ring)
+{
+ struct xhci_segment *seg;
+
+ if (WARN_ON_ONCE(ring->trb_address_map == NULL))
+ return;
+
+ seg = ring->first_seg;
+ do {
+ xhci_remove_segment_mapping(ring->trb_address_map, seg);
+ seg = seg->next;
+ } while (seg != ring->first_seg);
+}
+
+static int xhci_update_stream_mapping(struct xhci_ring *ring, gfp_t mem_flags)
+{
+ return xhci_update_stream_segment_mapping(ring->trb_address_map, ring,
+ ring->first_seg, ring->last_seg, mem_flags);
+}
+
/* XXX: Do we need the hcd structure in all these functions? */
void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring)
{
if (!ring)
return;
- if (ring->first_seg)
+ if (ring->first_seg) {
+ if (ring->type == TYPE_STREAM)
+ xhci_remove_stream_mapping(ring);
xhci_free_segments_for_ring(xhci, ring->first_seg);
+ }
kfree(ring);
}
@@ -349,6 +475,21 @@
if (ret)
return -ENOMEM;
+ if (ring->type == TYPE_STREAM)
+ ret = xhci_update_stream_segment_mapping(ring->trb_address_map,
+ ring, first, last, flags);
+ if (ret) {
+ struct xhci_segment *next;
+ do {
+ next = first->next;
+ xhci_segment_free(xhci, first);
+ if (first == last)
+ break;
+ first = next;
+ } while (true);
+ return ret;
+ }
+
xhci_link_rings(xhci, ring, first, last, num_segs);
xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion,
"ring expansion succeed, now has %d segments",
@@ -434,12 +575,12 @@
struct xhci_stream_ctx *stream_ctx, dma_addr_t dma)
{
struct device *dev = xhci_to_hcd(xhci)->self.controller;
+ size_t size = sizeof(struct xhci_stream_ctx) * num_stream_ctxs;
- if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE)
- dma_free_coherent(dev,
- sizeof(struct xhci_stream_ctx)*num_stream_ctxs,
+ if (size > MEDIUM_STREAM_ARRAY_SIZE)
+ dma_free_coherent(dev, size,
stream_ctx, dma);
- else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE)
+ else if (size <= SMALL_STREAM_ARRAY_SIZE)
return dma_pool_free(xhci->small_streams_pool,
stream_ctx, dma);
else
@@ -462,12 +603,12 @@
gfp_t mem_flags)
{
struct device *dev = xhci_to_hcd(xhci)->self.controller;
+ size_t size = sizeof(struct xhci_stream_ctx) * num_stream_ctxs;
- if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE)
- return dma_alloc_coherent(dev,
- sizeof(struct xhci_stream_ctx)*num_stream_ctxs,
+ if (size > MEDIUM_STREAM_ARRAY_SIZE)
+ return dma_alloc_coherent(dev, size,
dma, mem_flags);
- else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE)
+ else if (size <= SMALL_STREAM_ARRAY_SIZE)
return dma_pool_alloc(xhci->small_streams_pool,
mem_flags, dma);
else
@@ -510,36 +651,6 @@
* The number of stream contexts in the stream context array may be bigger than
* the number of streams the driver wants to use. This is because the number of
* stream context array entries must be a power of two.
- *
- * We need a radix tree for mapping physical addresses of TRBs to which stream
- * ID they belong to. We need to do this because the host controller won't tell
- * us which stream ring the TRB came from. We could store the stream ID in an
- * event data TRB, but that doesn't help us for the cancellation case, since the
- * endpoint may stop before it reaches that event data TRB.
- *
- * The radix tree maps the upper portion of the TRB DMA address to a ring
- * segment that has the same upper portion of DMA addresses. For example, say I
- * have segments of size 1KB, that are always 64-byte aligned. A segment may
- * start at 0x10c91000 and end at 0x10c913f0. If I use the upper 10 bits, the
- * key to the stream ID is 0x43244. I can use the DMA address of the TRB to
- * pass the radix tree a key to get the right stream ID:
- *
- * 0x10c90fff >> 10 = 0x43243
- * 0x10c912c0 >> 10 = 0x43244
- * 0x10c91400 >> 10 = 0x43245
- *
- * Obviously, only those TRBs with DMA addresses that are within the segment
- * will make the radix tree return the stream ID for that ring.
- *
- * Caveats for the radix tree:
- *
- * The radix tree uses an unsigned long as a key pair. On 32-bit systems, an
- * unsigned long will be 32-bits; on a 64-bit system an unsigned long will be
- * 64-bits. Since we only request 32-bit DMA addresses, we can use that as the
- * key on 32-bit or 64-bit systems (it would also be fine if we asked for 64-bit
- * PCI DMA addresses on a 64-bit system). There might be a problem on 32-bit
- * extended systems (where the DMA address can be bigger than 32-bits),
- * if we allow the PCI dma mask to be bigger than 32-bits. So don't do that.
*/
struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci,
unsigned int num_stream_ctxs,
@@ -548,7 +659,6 @@
struct xhci_stream_info *stream_info;
u32 cur_stream;
struct xhci_ring *cur_ring;
- unsigned long key;
u64 addr;
int ret;
@@ -603,6 +713,7 @@
if (!cur_ring)
goto cleanup_rings;
cur_ring->stream_id = cur_stream;
+ cur_ring->trb_address_map = &stream_info->trb_address_map;
/* Set deq ptr, cycle bit, and stream context type */
addr = cur_ring->first_seg->dma |
SCT_FOR_CTX(SCT_PRI_TR) |
@@ -612,10 +723,7 @@
xhci_dbg(xhci, "Setting stream %d ring ptr to 0x%08llx\n",
cur_stream, (unsigned long long) addr);
- key = (unsigned long)
- (cur_ring->first_seg->dma >> TRB_SEGMENT_SHIFT);
- ret = radix_tree_insert(&stream_info->trb_address_map,
- key, cur_ring);
+ ret = xhci_update_stream_mapping(cur_ring, mem_flags);
if (ret) {
xhci_ring_free(xhci, cur_ring);
stream_info->stream_rings[cur_stream] = NULL;
@@ -635,9 +743,6 @@
for (cur_stream = 1; cur_stream < num_streams; cur_stream++) {
cur_ring = stream_info->stream_rings[cur_stream];
if (cur_ring) {
- addr = cur_ring->first_seg->dma;
- radix_tree_delete(&stream_info->trb_address_map,
- addr >> TRB_SEGMENT_SHIFT);
xhci_ring_free(xhci, cur_ring);
stream_info->stream_rings[cur_stream] = NULL;
}
@@ -698,7 +803,6 @@
{
int cur_stream;
struct xhci_ring *cur_ring;
- dma_addr_t addr;
if (!stream_info)
return;
@@ -707,9 +811,6 @@
cur_stream++) {
cur_ring = stream_info->stream_rings[cur_stream];
if (cur_ring) {
- addr = cur_ring->first_seg->dma;
- radix_tree_delete(&stream_info->trb_address_map,
- addr >> TRB_SEGMENT_SHIFT);
xhci_ring_free(xhci, cur_ring);
stream_info->stream_rings[cur_stream] = NULL;
}
@@ -1711,7 +1812,6 @@
if (xhci->lpm_command)
xhci_free_command(xhci, xhci->lpm_command);
- xhci->cmd_ring_reserved_trbs = 0;
if (xhci->cmd_ring)
xhci_ring_free(xhci, xhci->cmd_ring);
xhci->cmd_ring = NULL;
@@ -1776,6 +1876,7 @@
}
no_bw:
+ xhci->cmd_ring_reserved_trbs = 0;
xhci->num_usb2_ports = 0;
xhci->num_usb3_ports = 0;
xhci->num_active_eps = 0;
@@ -2274,11 +2375,12 @@
/*
* Initialize the ring segment pool. The ring must be a contiguous
* structure comprised of TRBs. The TRBs must be 16 byte aligned,
- * however, the command ring segment needs 64-byte aligned segments,
- * so we pick the greater alignment need.
+ * however, the command ring segment needs 64-byte aligned segments
+ * and our use of dma addresses in the trb_address_map radix tree needs
+ * TRB_SEGMENT_SIZE alignment, so we pick the greater alignment need.
*/
xhci->segment_pool = dma_pool_create("xHCI ring segments", dev,
- TRB_SEGMENT_SIZE, 64, xhci->page_size);
+ TRB_SEGMENT_SIZE, TRB_SEGMENT_SIZE, xhci->page_size);
/* See Table 46 and Note on Figure 55 */
xhci->device_pool = dma_pool_create("xHCI input/output contexts", dev,
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 04f986d..47390e3 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -190,6 +190,10 @@
struct usb_hcd *hcd;
driver = (struct hc_driver *)id->driver_data;
+
+ /* Prevent runtime suspending between USB-2 and USB-3 initialization */
+ pm_runtime_get_noresume(&dev->dev);
+
/* Register the USB 2.0 roothub.
* FIXME: USB core must know to register the USB 2.0 roothub first.
* This is sort of silly, because we could just set the HCD driver flags
@@ -199,7 +203,7 @@
retval = usb_hcd_pci_probe(dev, id);
if (retval)
- return retval;
+ goto put_runtime_pm;
/* USB 2.0 roothub is stored in the PCI device now. */
hcd = dev_get_drvdata(&dev->dev);
@@ -222,11 +226,11 @@
goto put_usb3_hcd;
/* Roothub already marked as USB 3.0 speed */
- /* We know the LPM timeout algorithms for this host, let the USB core
- * enable and disable LPM for devices under the USB 3.0 roothub.
- */
- if (xhci->quirks & XHCI_LPM_SUPPORT)
- hcd_to_bus(xhci->shared_hcd)->root_hub->lpm_capable = 1;
+ if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
+ xhci->shared_hcd->can_do_streams = 1;
+
+ /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
+ pm_runtime_put_noidle(&dev->dev);
return 0;
@@ -234,6 +238,8 @@
usb_put_hcd(xhci->shared_hcd);
dealloc_usb2_hcd:
usb_hcd_pci_remove(dev);
+put_runtime_pm:
+ pm_runtime_put_noidle(&dev->dev);
return retval;
}
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 8abda5c..151901c 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -158,6 +158,9 @@
*/
*((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;
+ if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
+ xhci->shared_hcd->can_do_streams = 1;
+
ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
if (ret)
goto put_usb3_hcd;
@@ -226,6 +229,7 @@
#ifdef CONFIG_OF
static const struct of_device_id usb_xhci_of_match[] = {
+ { .compatible = "generic-xhci" },
{ .compatible = "xhci-platform" },
{ },
};
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 0ed64eb..5f926be 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -546,9 +546,9 @@
struct xhci_dequeue_state *state)
{
struct xhci_virt_device *dev = xhci->devs[slot_id];
+ struct xhci_virt_ep *ep = &dev->eps[ep_index];
struct xhci_ring *ep_ring;
struct xhci_generic_trb *trb;
- struct xhci_ep_ctx *ep_ctx;
dma_addr_t addr;
ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id,
@@ -573,8 +573,16 @@
/* Dig out the cycle state saved by the xHC during the stop ep cmd */
xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
"Finding endpoint context");
- ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
- state->new_cycle_state = 0x1 & le64_to_cpu(ep_ctx->deq);
+ /* 4.6.9 the css flag is written to the stream context for streams */
+ if (ep->ep_state & EP_HAS_STREAMS) {
+ struct xhci_stream_ctx *ctx =
+ &ep->stream_info->stream_ctx_array[stream_id];
+ state->new_cycle_state = 0x1 & le64_to_cpu(ctx->stream_ring);
+ } else {
+ struct xhci_ep_ctx *ep_ctx
+ = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
+ state->new_cycle_state = 0x1 & le64_to_cpu(ep_ctx->deq);
+ }
state->new_deq_ptr = cur_td->last_trb;
xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
@@ -892,6 +900,57 @@
/* Return to the event handler with xhci->lock re-acquired */
}
+static void xhci_kill_ring_urbs(struct xhci_hcd *xhci, struct xhci_ring *ring)
+{
+ struct xhci_td *cur_td;
+
+ while (!list_empty(&ring->td_list)) {
+ cur_td = list_first_entry(&ring->td_list,
+ struct xhci_td, td_list);
+ list_del_init(&cur_td->td_list);
+ if (!list_empty(&cur_td->cancelled_td_list))
+ list_del_init(&cur_td->cancelled_td_list);
+ xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN);
+ }
+}
+
+static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci,
+ int slot_id, int ep_index)
+{
+ struct xhci_td *cur_td;
+ struct xhci_virt_ep *ep;
+ struct xhci_ring *ring;
+
+ ep = &xhci->devs[slot_id]->eps[ep_index];
+ if ((ep->ep_state & EP_HAS_STREAMS) ||
+ (ep->ep_state & EP_GETTING_NO_STREAMS)) {
+ int stream_id;
+
+ for (stream_id = 0; stream_id < ep->stream_info->num_streams;
+ stream_id++) {
+ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+ "Killing URBs for slot ID %u, ep index %u, stream %u",
+ slot_id, ep_index, stream_id + 1);
+ xhci_kill_ring_urbs(xhci,
+ ep->stream_info->stream_rings[stream_id]);
+ }
+ } else {
+ ring = ep->ring;
+ if (!ring)
+ return;
+ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
+ "Killing URBs for slot ID %u, ep index %u",
+ slot_id, ep_index);
+ xhci_kill_ring_urbs(xhci, ring);
+ }
+ while (!list_empty(&ep->cancelled_td_list)) {
+ cur_td = list_first_entry(&ep->cancelled_td_list,
+ struct xhci_td, cancelled_td_list);
+ list_del_init(&cur_td->cancelled_td_list);
+ xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN);
+ }
+}
+
/* Watchdog timer function for when a stop endpoint command fails to complete.
* In this case, we assume the host controller is broken or dying or dead. The
* host may still be completing some other events, so we have to be careful to
@@ -915,9 +974,6 @@
{
struct xhci_hcd *xhci;
struct xhci_virt_ep *ep;
- struct xhci_virt_ep *temp_ep;
- struct xhci_ring *ring;
- struct xhci_td *cur_td;
int ret, i, j;
unsigned long flags;
@@ -974,34 +1030,8 @@
for (i = 0; i < MAX_HC_SLOTS; i++) {
if (!xhci->devs[i])
continue;
- for (j = 0; j < 31; j++) {
- temp_ep = &xhci->devs[i]->eps[j];
- ring = temp_ep->ring;
- if (!ring)
- continue;
- xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
- "Killing URBs for slot ID %u, "
- "ep index %u", i, j);
- while (!list_empty(&ring->td_list)) {
- cur_td = list_first_entry(&ring->td_list,
- struct xhci_td,
- td_list);
- list_del_init(&cur_td->td_list);
- if (!list_empty(&cur_td->cancelled_td_list))
- list_del_init(&cur_td->cancelled_td_list);
- xhci_giveback_urb_in_irq(xhci, cur_td,
- -ESHUTDOWN);
- }
- while (!list_empty(&temp_ep->cancelled_td_list)) {
- cur_td = list_first_entry(
- &temp_ep->cancelled_td_list,
- struct xhci_td,
- cancelled_td_list);
- list_del_init(&cur_td->cancelled_td_list);
- xhci_giveback_urb_in_irq(xhci, cur_td,
- -ESHUTDOWN);
- }
- }
+ for (j = 0; j < 31; j++)
+ xhci_kill_endpoint_urbs(xhci, i, j);
}
spin_unlock_irqrestore(&xhci->lock, flags);
xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
@@ -1073,17 +1103,18 @@
unsigned int stream_id;
struct xhci_ring *ep_ring;
struct xhci_virt_device *dev;
+ struct xhci_virt_ep *ep;
struct xhci_ep_ctx *ep_ctx;
struct xhci_slot_ctx *slot_ctx;
ep_index = TRB_TO_EP_INDEX(le32_to_cpu(trb->generic.field[3]));
stream_id = TRB_TO_STREAM_ID(le32_to_cpu(trb->generic.field[2]));
dev = xhci->devs[slot_id];
+ ep = &dev->eps[ep_index];
ep_ring = xhci_stream_id_to_ring(dev, ep_index, stream_id);
if (!ep_ring) {
- xhci_warn(xhci, "WARN Set TR deq ptr command for "
- "freed stream ID %u\n",
+ xhci_warn(xhci, "WARN Set TR deq ptr command for freed stream ID %u\n",
stream_id);
/* XXX: Harmless??? */
dev->eps[ep_index].ep_state &= ~SET_DEQ_PENDING;
@@ -1099,12 +1130,10 @@
switch (cmd_comp_code) {
case COMP_TRB_ERR:
- xhci_warn(xhci, "WARN Set TR Deq Ptr cmd invalid because "
- "of stream ID configuration\n");
+ xhci_warn(xhci, "WARN Set TR Deq Ptr cmd invalid because of stream ID configuration\n");
break;
case COMP_CTX_STATE:
- xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed due "
- "to incorrect slot or ep state.\n");
+ xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.\n");
ep_state = le32_to_cpu(ep_ctx->ep_info);
ep_state &= EP_STATE_MASK;
slot_state = le32_to_cpu(slot_ctx->dev_state);
@@ -1114,13 +1143,12 @@
slot_state, ep_state);
break;
case COMP_EBADSLT:
- xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed because "
- "slot %u was not enabled.\n", slot_id);
+ xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed because slot %u was not enabled.\n",
+ slot_id);
break;
default:
- xhci_warn(xhci, "WARN Set TR Deq Ptr cmd with unknown "
- "completion code of %u.\n",
- cmd_comp_code);
+ xhci_warn(xhci, "WARN Set TR Deq Ptr cmd with unknown completion code of %u.\n",
+ cmd_comp_code);
break;
}
/* OK what do we do now? The endpoint state is hosed, and we
@@ -1130,23 +1158,28 @@
* cancelling URBs, which might not be an error...
*/
} else {
+ u64 deq;
+ /* 4.6.10 deq ptr is written to the stream ctx for streams */
+ if (ep->ep_state & EP_HAS_STREAMS) {
+ struct xhci_stream_ctx *ctx =
+ &ep->stream_info->stream_ctx_array[stream_id];
+ deq = le64_to_cpu(ctx->stream_ring) & SCTX_DEQ_MASK;
+ } else {
+ deq = le64_to_cpu(ep_ctx->deq) & ~EP_CTX_CYCLE_MASK;
+ }
xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
- "Successful Set TR Deq Ptr cmd, deq = @%08llx",
- le64_to_cpu(ep_ctx->deq));
- if (xhci_trb_virt_to_dma(dev->eps[ep_index].queued_deq_seg,
- dev->eps[ep_index].queued_deq_ptr) ==
- (le64_to_cpu(ep_ctx->deq) & ~(EP_CTX_CYCLE_MASK))) {
+ "Successful Set TR Deq Ptr cmd, deq = @%08llx", deq);
+ if (xhci_trb_virt_to_dma(ep->queued_deq_seg,
+ ep->queued_deq_ptr) == deq) {
/* Update the ring's dequeue segment and dequeue pointer
* to reflect the new position.
*/
update_ring_for_set_deq_completion(xhci, dev,
ep_ring, ep_index);
} else {
- xhci_warn(xhci, "Mismatch between completed Set TR Deq "
- "Ptr command & xHCI internal state.\n");
+ xhci_warn(xhci, "Mismatch between completed Set TR Deq Ptr command & xHCI internal state.\n");
xhci_warn(xhci, "ep deq seg = %p, deq ptr = %p\n",
- dev->eps[ep_index].queued_deq_seg,
- dev->eps[ep_index].queued_deq_ptr);
+ ep->queued_deq_seg, ep->queued_deq_ptr);
}
}
@@ -4070,6 +4103,7 @@
u32 trb_slot_id = SLOT_ID_FOR_TRB(slot_id);
u32 trb_ep_index = EP_ID_FOR_TRB(ep_index);
u32 trb_stream_id = STREAM_ID_FOR_TRB(stream_id);
+ u32 trb_sct = 0;
u32 type = TRB_TYPE(TRB_SET_DEQ);
struct xhci_virt_ep *ep;
@@ -4088,7 +4122,9 @@
}
ep->queued_deq_seg = deq_seg;
ep->queued_deq_ptr = deq_ptr;
- return queue_command(xhci, lower_32_bits(addr) | cycle_state,
+ if (stream_id)
+ trb_sct = SCT_FOR_TRB(SCT_PRI_TR);
+ return queue_command(xhci, lower_32_bits(addr) | trb_sct | cycle_state,
upper_32_bits(addr), trb_stream_id,
trb_slot_id | trb_ep_index | type, false);
}
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 924a6cc..8fe4e12 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -390,6 +390,10 @@
}
legacy_irq:
+ if (!strlen(hcd->irq_descr))
+ snprintf(hcd->irq_descr, sizeof(hcd->irq_descr), "%s:usb%d",
+ hcd->driver->description, hcd->self.busnum);
+
/* fall back to legacy interrupt*/
ret = request_irq(pdev->irq, &usb_hcd_irq, IRQF_SHARED,
hcd->irq_descr, hcd);
@@ -2678,6 +2682,20 @@
return ret;
}
+static void xhci_check_bw_drop_ep_streams(struct xhci_hcd *xhci,
+ struct xhci_virt_device *vdev, int i)
+{
+ struct xhci_virt_ep *ep = &vdev->eps[i];
+
+ if (ep->ep_state & EP_HAS_STREAMS) {
+ xhci_warn(xhci, "WARN: endpoint 0x%02x has streams on set_interface, freeing streams.\n",
+ xhci_get_endpoint_address(i));
+ xhci_free_stream_info(xhci, ep->stream_info);
+ ep->stream_info = NULL;
+ ep->ep_state &= ~EP_HAS_STREAMS;
+ }
+}
+
/* Called after one or more calls to xhci_add_endpoint() or
* xhci_drop_endpoint(). If this call fails, the USB core is expected
* to call xhci_reset_bandwidth().
@@ -2742,8 +2760,10 @@
/* Free any rings that were dropped, but not changed. */
for (i = 1; i < 31; ++i) {
if ((le32_to_cpu(ctrl_ctx->drop_flags) & (1 << (i + 1))) &&
- !(le32_to_cpu(ctrl_ctx->add_flags) & (1 << (i + 1))))
+ !(le32_to_cpu(ctrl_ctx->add_flags) & (1 << (i + 1)))) {
xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
+ xhci_check_bw_drop_ep_streams(xhci, virt_dev, i);
+ }
}
xhci_zero_in_ctx(xhci, virt_dev);
/*
@@ -2759,6 +2779,7 @@
if (virt_dev->eps[i].ring) {
xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
}
+ xhci_check_bw_drop_ep_streams(xhci, virt_dev, i);
virt_dev->eps[i].ring = virt_dev->eps[i].new_ring;
virt_dev->eps[i].new_ring = NULL;
}
@@ -2954,7 +2975,7 @@
ret = xhci_check_args(xhci_to_hcd(xhci), udev, ep, 1, true, __func__);
if (ret <= 0)
return -EINVAL;
- if (ep->ss_ep_comp.bmAttributes == 0) {
+ if (usb_ss_max_streams(&ep->ss_ep_comp) == 0) {
xhci_warn(xhci, "WARN: SuperSpeed Endpoint Companion"
" descriptor for ep 0x%x does not support streams\n",
ep->desc.bEndpointAddress);
@@ -3121,6 +3142,12 @@
xhci_dbg(xhci, "Driver wants %u stream IDs (including stream 0).\n",
num_streams);
+ /* MaxPSASize value 0 (2 streams) means streams are not supported */
+ if (HCC_MAX_PSA(xhci->hcc_params) < 4) {
+ xhci_dbg(xhci, "xHCI controller does not support streams.\n");
+ return -ENOSYS;
+ }
+
config_cmd = xhci_alloc_command(xhci, true, true, mem_flags);
if (!config_cmd) {
xhci_dbg(xhci, "Could not allocate xHCI command structure.\n");
@@ -3519,6 +3546,8 @@
struct xhci_virt_ep *ep = &virt_dev->eps[i];
if (ep->ep_state & EP_HAS_STREAMS) {
+ xhci_warn(xhci, "WARN: endpoint 0x%02x has streams on device reset, freeing streams.\n",
+ xhci_get_endpoint_address(i));
xhci_free_stream_info(xhci, ep->stream_info);
ep->stream_info = NULL;
ep->ep_state &= ~EP_HAS_STREAMS;
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 58ed9d0..d280e92 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -703,6 +703,7 @@
/* deq bitmasks */
#define EP_CTX_CYCLE_MASK (1 << 0)
+#define SCTX_DEQ_MASK (~0xfL)
/**
@@ -1118,9 +1119,10 @@
#define TRB_TO_SUSPEND_PORT(p) (((p) & (1 << 23)) >> 23)
#define LAST_EP_INDEX 30
-/* Set TR Dequeue Pointer command TRB fields */
+/* Set TR Dequeue Pointer command TRB fields, 6.4.3.9 */
#define TRB_TO_STREAM_ID(p) ((((p) & (0xffff << 16)) >> 16))
#define STREAM_ID_FOR_TRB(p) ((((p)) & 0xffff) << 16)
+#define SCT_FOR_TRB(p) (((p) << 1) & 0x7)
/* Port Status Change Event TRB fields */
@@ -1341,6 +1343,7 @@
unsigned int num_trbs_free_temp;
enum xhci_ring_type type;
bool last_td_was_short;
+ struct radix_tree_root *trb_address_map;
};
struct xhci_erst_entry {
diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig
index ba5f70f..1bca274d 100644
--- a/drivers/usb/misc/Kconfig
+++ b/drivers/usb/misc/Kconfig
@@ -128,7 +128,6 @@
config USB_FTDI_ELAN
tristate "Elan PCMCIA CardBus Adapter USB Client"
- default M
help
ELAN's Uxxx series of adapters are USB to PCMCIA CardBus adapters.
Currently only the U132 adapter is available.
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index de98906..06b5d77 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -2123,8 +2123,8 @@
u8 tmp8, tmp82, ramtype;
int bw = 0;
char *ramtypetext1 = NULL;
- const char *ramtypetext2[] = { "SDR SDRAM", "SDR SGRAM",
- "DDR SDRAM", "DDR SGRAM" };
+ static const char ram_datarate[4] = {'S', 'S', 'D', 'D'};
+ static const char ram_dynamictype[4] = {'D', 'G', 'D', 'G'};
static const int busSDR[4] = {64, 64, 128, 128};
static const int busDDR[4] = {32, 32, 64, 64};
static const int busDDRA[4] = {64+32, 64+32 , (64+32)*2, (64+32)*2};
@@ -2156,8 +2156,10 @@
break;
}
- dev_info(&sisusb->sisusb_dev->dev, "%dMB %s %s, bus width %d\n", (sisusb->vramsize >> 20), ramtypetext1,
- ramtypetext2[ramtype], bw);
+
+ dev_info(&sisusb->sisusb_dev->dev, "%dMB %s %cDR S%cRAM, bus width %d\n",
+ sisusb->vramsize >> 20, ramtypetext1,
+ ram_datarate[ramtype], ram_dynamictype[ramtype], bw);
}
static int
diff --git a/drivers/usb/misc/usbled.c b/drivers/usb/misc/usbled.c
index 78eb4ff..bdef0d6 100644
--- a/drivers/usb/misc/usbled.c
+++ b/drivers/usb/misc/usbled.c
@@ -22,8 +22,27 @@
enum led_type {
DELCOM_VISUAL_SIGNAL_INDICATOR,
DREAM_CHEEKY_WEBMAIL_NOTIFIER,
+ RISO_KAGAKU_LED
};
+/* the Webmail LED made by RISO KAGAKU CORP. decodes a color index
+ internally, we want to keep the red+green+blue sysfs api, so we decode
+ from 1-bit RGB to the riso kagaku color index according to this table... */
+
+static unsigned const char riso_kagaku_tbl[] = {
+/* R+2G+4B -> riso kagaku color index */
+ [0] = 0, /* black */
+ [1] = 2, /* red */
+ [2] = 1, /* green */
+ [3] = 5, /* yellow */
+ [4] = 3, /* blue */
+ [5] = 6, /* magenta */
+ [6] = 4, /* cyan */
+ [7] = 7 /* white */
+};
+
+#define RISO_KAGAKU_IX(r,g,b) riso_kagaku_tbl[((r)?1:0)+((g)?2:0)+((b)?4:0)]
+
/* table of devices that work with this driver */
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x0fc5, 0x1223),
@@ -32,6 +51,8 @@
.driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
{ USB_DEVICE(0x1d34, 0x000a),
.driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
+ { USB_DEVICE(0x1294, 0x1320),
+ .driver_info = RISO_KAGAKU_LED },
{ },
};
MODULE_DEVICE_TABLE(usb, id_table);
@@ -48,6 +69,7 @@
{
int retval = 0;
unsigned char *buffer;
+ int actlength;
buffer = kmalloc(8, GFP_KERNEL);
if (!buffer) {
@@ -104,6 +126,18 @@
2000);
break;
+ case RISO_KAGAKU_LED:
+ buffer[0] = RISO_KAGAKU_IX(led->red, led->green, led->blue);
+ buffer[1] = 0;
+ buffer[2] = 0;
+ buffer[3] = 0;
+ buffer[4] = 0;
+
+ retval = usb_interrupt_msg(led->udev,
+ usb_sndctrlpipe(led->udev, 2),
+ buffer, 5, &actlength, 1000 /*ms timeout*/);
+ break;
+
default:
dev_err(&led->udev->dev, "unknown device type %d\n", led->type);
}
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index 688dc8b..8b789792 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -43,6 +43,7 @@
config USB_MUSB_GADGET
bool "Gadget only mode"
depends on USB_GADGET=y || USB_GADGET=USB_MUSB_HDRC
+ depends on HAS_DMA
help
Select this when you want to use MUSB in gadget mode only,
thereby the host feature will be regressed.
@@ -50,6 +51,7 @@
config USB_MUSB_DUAL_ROLE
bool "Dual Role mode"
depends on ((USB=y || USB=USB_MUSB_HDRC) && (USB_GADGET=y || USB_GADGET=USB_MUSB_HDRC))
+ depends on HAS_DMA
help
This is the default mode of working of MUSB controller where
both host and gadget features are enabled.
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 239ad0b..0757690 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -438,7 +438,6 @@
static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
u8 devctl)
{
- struct usb_otg *otg = musb->xceiv->otg;
irqreturn_t handled = IRQ_NONE;
dev_dbg(musb->controller, "<== DevCtl=%02x, int_usb=0x%x\n", devctl,
@@ -656,7 +655,7 @@
break;
case OTG_STATE_B_PERIPHERAL:
musb_g_suspend(musb);
- musb->is_active = otg->gadget->b_hnp_enable;
+ musb->is_active = musb->g.b_hnp_enable;
if (musb->is_active) {
musb->xceiv->state = OTG_STATE_B_WAIT_ACON;
dev_dbg(musb->controller, "HNP: Setting timer for b_ase0_brst\n");
@@ -672,7 +671,7 @@
break;
case OTG_STATE_A_HOST:
musb->xceiv->state = OTG_STATE_A_SUSPEND;
- musb->is_active = otg->host->b_hnp_enable;
+ musb->is_active = musb->hcd->self.b_hnp_enable;
break;
case OTG_STATE_B_HOST:
/* Transition to B_PERIPHERAL, see 6.8.2.6 p 44 */
diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c
index f889296..7b8bbf5 100644
--- a/drivers/usb/musb/musb_cppi41.c
+++ b/drivers/usb/musb/musb_cppi41.c
@@ -39,6 +39,7 @@
u32 transferred;
u32 packet_sz;
struct list_head tx_check;
+ struct work_struct dma_completion;
};
#define MUSB_DMA_NUM_CHANNELS 15
@@ -112,6 +113,18 @@
return true;
}
+static bool is_isoc(struct musb_hw_ep *hw_ep, bool in)
+{
+ if (in && hw_ep->in_qh) {
+ if (hw_ep->in_qh->type == USB_ENDPOINT_XFER_ISOC)
+ return true;
+ } else if (hw_ep->out_qh) {
+ if (hw_ep->out_qh->type == USB_ENDPOINT_XFER_ISOC)
+ return true;
+ }
+ return false;
+}
+
static void cppi41_dma_callback(void *private_data);
static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel)
@@ -119,7 +132,8 @@
struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep;
struct musb *musb = hw_ep->musb;
- if (!cppi41_channel->prog_len) {
+ if (!cppi41_channel->prog_len ||
+ (cppi41_channel->channel.status == MUSB_DMA_STATUS_FREE)) {
/* done, complete */
cppi41_channel->channel.actual_len =
@@ -165,6 +179,32 @@
}
}
+static void cppi_trans_done_work(struct work_struct *work)
+{
+ unsigned long flags;
+ struct cppi41_dma_channel *cppi41_channel =
+ container_of(work, struct cppi41_dma_channel, dma_completion);
+ struct cppi41_dma_controller *controller = cppi41_channel->controller;
+ struct musb *musb = controller->musb;
+ struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep;
+ bool empty;
+
+ if (!cppi41_channel->is_tx && is_isoc(hw_ep, 1)) {
+ spin_lock_irqsave(&musb->lock, flags);
+ cppi41_trans_done(cppi41_channel);
+ spin_unlock_irqrestore(&musb->lock, flags);
+ } else {
+ empty = musb_is_tx_fifo_empty(hw_ep);
+ if (empty) {
+ spin_lock_irqsave(&musb->lock, flags);
+ cppi41_trans_done(cppi41_channel);
+ spin_unlock_irqrestore(&musb->lock, flags);
+ } else {
+ schedule_work(&cppi41_channel->dma_completion);
+ }
+ }
+}
+
static enum hrtimer_restart cppi41_recheck_tx_req(struct hrtimer *timer)
{
struct cppi41_dma_controller *controller;
@@ -228,6 +268,14 @@
transferred < cppi41_channel->packet_sz)
cppi41_channel->prog_len = 0;
+ if (!cppi41_channel->is_tx) {
+ if (is_isoc(hw_ep, 1))
+ schedule_work(&cppi41_channel->dma_completion);
+ else
+ cppi41_trans_done(cppi41_channel);
+ goto out;
+ }
+
empty = musb_is_tx_fifo_empty(hw_ep);
if (empty) {
cppi41_trans_done(cppi41_channel);
@@ -264,6 +312,10 @@
goto out;
}
}
+ if (is_isoc(hw_ep, 0)) {
+ schedule_work(&cppi41_channel->dma_completion);
+ goto out;
+ }
list_add_tail(&cppi41_channel->tx_check,
&controller->early_tx_list);
if (!hrtimer_active(&controller->early_tx)) {
@@ -448,12 +500,25 @@
dma_addr_t dma_addr, u32 len)
{
int ret;
+ struct cppi41_dma_channel *cppi41_channel = channel->private_data;
+ int hb_mult = 0;
BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN ||
channel->status == MUSB_DMA_STATUS_BUSY);
+ if (is_host_active(cppi41_channel->controller->musb)) {
+ if (cppi41_channel->is_tx)
+ hb_mult = cppi41_channel->hw_ep->out_qh->hb_mult;
+ else
+ hb_mult = cppi41_channel->hw_ep->in_qh->hb_mult;
+ }
+
channel->status = MUSB_DMA_STATUS_BUSY;
channel->actual_len = 0;
+
+ if (hb_mult)
+ packet_sz = hb_mult * (packet_sz & 0x7FF);
+
ret = cppi41_configure_channel(channel, packet_sz, mode, dma_addr, len);
if (!ret)
channel->status = MUSB_DMA_STATUS_FREE;
@@ -607,6 +672,8 @@
cppi41_channel->port_num = port;
cppi41_channel->is_tx = is_tx;
INIT_LIST_HEAD(&cppi41_channel->tx_check);
+ INIT_WORK(&cppi41_channel->dma_completion,
+ cppi_trans_done_work);
musb_dma = &cppi41_channel->channel;
musb_dma->private_data = cppi41_channel;
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 7a109ea..3372ded 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -45,6 +45,8 @@
#include <linux/of_irq.h>
#include <linux/usb/of.h>
+#include <linux/debugfs.h>
+
#include "musb_core.h"
static const struct of_device_id musb_dsps_of_match[];
@@ -136,6 +138,26 @@
unsigned long last_timer; /* last timer data for each instance */
struct dsps_context context;
+ struct debugfs_regset32 regset;
+ struct dentry *dbgfs_root;
+};
+
+static const struct debugfs_reg32 dsps_musb_regs[] = {
+ { "revision", 0x00 },
+ { "control", 0x14 },
+ { "status", 0x18 },
+ { "eoi", 0x24 },
+ { "intr0_stat", 0x30 },
+ { "intr1_stat", 0x34 },
+ { "intr0_set", 0x38 },
+ { "intr1_set", 0x3c },
+ { "txmode", 0x70 },
+ { "rxmode", 0x74 },
+ { "autoreq", 0xd0 },
+ { "srpfixtime", 0xd4 },
+ { "tdown", 0xd8 },
+ { "phy_utmi", 0xe0 },
+ { "mode", 0xe8 },
};
static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout)
@@ -368,6 +390,30 @@
return ret;
}
+static int dsps_musb_dbg_init(struct musb *musb, struct dsps_glue *glue)
+{
+ struct dentry *root;
+ struct dentry *file;
+ char buf[128];
+
+ sprintf(buf, "%s.dsps", dev_name(musb->controller));
+ root = debugfs_create_dir(buf, NULL);
+ if (!root)
+ return -ENOMEM;
+ glue->dbgfs_root = root;
+
+ glue->regset.regs = dsps_musb_regs;
+ glue->regset.nregs = ARRAY_SIZE(dsps_musb_regs);
+ glue->regset.base = musb->ctrl_base;
+
+ file = debugfs_create_regset32("regdump", S_IRUGO, root, &glue->regset);
+ if (!file) {
+ debugfs_remove_recursive(root);
+ return -ENOMEM;
+ }
+ return 0;
+}
+
static int dsps_musb_init(struct musb *musb)
{
struct device *dev = musb->controller;
@@ -377,6 +423,7 @@
void __iomem *reg_base;
struct resource *r;
u32 rev, val;
+ int ret;
r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control");
if (!r)
@@ -410,6 +457,10 @@
val &= ~(1 << wrp->otg_disable);
dsps_writel(musb->ctrl_base, wrp->phy_utmi, val);
+ ret = dsps_musb_dbg_init(musb, glue);
+ if (ret)
+ return ret;
+
return 0;
}
@@ -616,7 +667,7 @@
wrp = match->data;
/* allocate glue */
- glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+ glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
if (!glue) {
dev_err(&pdev->dev, "unable to allocate glue memory\n");
return -ENOMEM;
@@ -644,7 +695,6 @@
pm_runtime_put(&pdev->dev);
err2:
pm_runtime_disable(&pdev->dev);
- kfree(glue);
return ret;
}
@@ -657,7 +707,9 @@
/* disable usbss clocks */
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
- kfree(glue);
+
+ debugfs_remove_recursive(glue->dbgfs_root);
+
return 0;
}
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index abb38c3..eb06291 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -1694,7 +1694,8 @@
| MUSB_RXCSR_RXPKTRDY);
musb_writew(hw_ep->regs, MUSB_RXCSR, val);
-#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)
+#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) || \
+ defined(CONFIG_USB_TI_CPPI41_DMA)
if (usb_pipeisoc(pipe)) {
struct usb_iso_packet_descriptor *d;
@@ -1707,10 +1708,30 @@
if (d->status != -EILSEQ && d->status != -EOVERFLOW)
d->status = 0;
- if (++qh->iso_idx >= urb->number_of_packets)
+ if (++qh->iso_idx >= urb->number_of_packets) {
done = true;
- else
+ } else {
+#if defined(CONFIG_USB_TI_CPPI41_DMA)
+ struct dma_controller *c;
+ dma_addr_t *buf;
+ u32 length, ret;
+
+ c = musb->dma_controller;
+ buf = (void *)
+ urb->iso_frame_desc[qh->iso_idx].offset
+ + (u32)urb->transfer_dma;
+
+ length =
+ urb->iso_frame_desc[qh->iso_idx].length;
+
+ val |= MUSB_RXCSR_DMAENAB;
+ musb_writew(hw_ep->regs, MUSB_RXCSR, val);
+
+ ret = c->channel_program(dma, qh->maxpacket,
+ 0, (u32) buf, length);
+#endif
done = false;
+ }
} else {
/* done if urb buffer is full or short packet is recd */
@@ -1750,7 +1771,8 @@
}
/* we are expecting IN packets */
-#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA)
+#if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_UX500_DMA) || \
+ defined(CONFIG_USB_TI_CPPI41_DMA)
if (dma) {
struct dma_controller *c;
u16 rx_count;
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 8aa59a2..d341c14 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -37,7 +37,7 @@
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/usb/musb-omap.h>
-#include <linux/usb/omap_control_usb.h>
+#include <linux/phy/omap_control_phy.h>
#include <linux/of_platform.h>
#include "musb_core.h"
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 7d1451d..416e0c8 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -75,27 +75,6 @@
built-in with usb ip or which are autonomous and doesn't require any
phy programming such as ISP1x04 etc.
-config OMAP_CONTROL_USB
- tristate "OMAP CONTROL USB Driver"
- depends on ARCH_OMAP2PLUS || COMPILE_TEST
- help
- Enable this to add support for the USB part present in the control
- module. This driver has API to power on the USB2 PHY and to write to
- the mailbox. The mailbox is present only in omap4 and the register to
- power on the USB2 PHY is present in OMAP4 and OMAP5. OMAP5 has an
- additional register to power on USB3 PHY.
-
-config OMAP_USB3
- tristate "OMAP USB3 PHY Driver"
- depends on ARCH_OMAP2PLUS || COMPILE_TEST
- select OMAP_CONTROL_USB
- select USB_PHY
- help
- Enable this to support the USB3 PHY that is part of SOC. This
- driver takes care of all the PHY functionality apart from comparator.
- This driver interacts with the "OMAP Control USB Driver" to power
- on/off the PHY.
-
config AM335X_CONTROL_USB
tristate
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index be58ada..f8fa719 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -13,11 +13,9 @@
obj-$(CONFIG_MV_U3D_PHY) += phy-mv-u3d-usb.o
obj-$(CONFIG_NOP_USB_XCEIV) += phy-generic.o
obj-$(CONFIG_TAHVO_USB) += phy-tahvo.o
-obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o
obj-$(CONFIG_AM335X_CONTROL_USB) += phy-am335x-control.o
obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o
obj-$(CONFIG_OMAP_OTG) += phy-omap-otg.o
-obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o
obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o
obj-$(CONFIG_SAMSUNG_USB2PHY) += phy-samsung-usb2.o
obj-$(CONFIG_SAMSUNG_USB3PHY) += phy-samsung-usb3.o
diff --git a/drivers/usb/phy/phy-fsm-usb.c b/drivers/usb/phy/phy-fsm-usb.c
index 7aa314e..c47e5a6 100644
--- a/drivers/usb/phy/phy-fsm-usb.c
+++ b/drivers/usb/phy/phy-fsm-usb.c
@@ -317,10 +317,12 @@
otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
break;
case OTG_STATE_A_HOST:
- if ((!fsm->a_bus_req || fsm->a_suspend_req_inf) &&
+ if (fsm->id || fsm->a_bus_drop)
+ otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL);
+ else if ((!fsm->a_bus_req || fsm->a_suspend_req_inf) &&
fsm->otg->host->b_hnp_enable)
otg_set_state(fsm, OTG_STATE_A_SUSPEND);
- else if (fsm->id || !fsm->b_conn || fsm->a_bus_drop)
+ else if (!fsm->b_conn)
otg_set_state(fsm, OTG_STATE_A_WAIT_BCON);
else if (!fsm->a_vbus_vld)
otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
@@ -346,8 +348,7 @@
otg_set_state(fsm, OTG_STATE_A_VBUS_ERR);
break;
case OTG_STATE_A_WAIT_VFALL:
- if (fsm->a_wait_vfall_tmout || fsm->id || fsm->a_bus_req ||
- (!fsm->a_sess_vld && !fsm->b_conn))
+ if (fsm->a_wait_vfall_tmout)
otg_set_state(fsm, OTG_STATE_A_IDLE);
break;
case OTG_STATE_A_VBUS_ERR:
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c
index d204f74..5b37b81 100644
--- a/drivers/usb/phy/phy-msm-usb.c
+++ b/drivers/usb/phy/phy-msm-usb.c
@@ -1428,7 +1428,8 @@
motg->phy.otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
if (!motg->phy.otg) {
dev_err(&pdev->dev, "unable to allocate msm_otg\n");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto free_motg;
}
motg->pdata = dev_get_platdata(&pdev->dev);
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
index b42897b..c42bdf0 100644
--- a/drivers/usb/phy/phy-mxs-usb.c
+++ b/drivers/usb/phy/phy-mxs-usb.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2012-2013 Freescale Semiconductor, Inc.
* Copyright (C) 2012 Marek Vasut <marex@denx.de>
* on behalf of DENX Software Engineering GmbH
*
@@ -20,6 +20,9 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/io.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
#define DRIVER_NAME "mxs_phy"
@@ -28,18 +31,134 @@
#define HW_USBPHY_CTRL_SET 0x34
#define HW_USBPHY_CTRL_CLR 0x38
+#define HW_USBPHY_DEBUG_SET 0x54
+#define HW_USBPHY_DEBUG_CLR 0x58
+
+#define HW_USBPHY_IP 0x90
+#define HW_USBPHY_IP_SET 0x94
+#define HW_USBPHY_IP_CLR 0x98
+
#define BM_USBPHY_CTRL_SFTRST BIT(31)
#define BM_USBPHY_CTRL_CLKGATE BIT(30)
+#define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS BIT(26)
+#define BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE BIT(25)
+#define BM_USBPHY_CTRL_ENVBUSCHG_WKUP BIT(23)
+#define BM_USBPHY_CTRL_ENIDCHG_WKUP BIT(22)
+#define BM_USBPHY_CTRL_ENDPDMCHG_WKUP BIT(21)
+#define BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD BIT(20)
+#define BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE BIT(19)
+#define BM_USBPHY_CTRL_ENAUTO_PWRON_PLL BIT(18)
#define BM_USBPHY_CTRL_ENUTMILEVEL3 BIT(15)
#define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14)
#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1)
+#define BM_USBPHY_IP_FIX (BIT(17) | BIT(18))
+
+#define BM_USBPHY_DEBUG_CLKGATE BIT(30)
+
+/* Anatop Registers */
+#define ANADIG_ANA_MISC0 0x150
+#define ANADIG_ANA_MISC0_SET 0x154
+#define ANADIG_ANA_MISC0_CLR 0x158
+
+#define ANADIG_USB1_VBUS_DET_STAT 0x1c0
+#define ANADIG_USB2_VBUS_DET_STAT 0x220
+
+#define ANADIG_USB1_LOOPBACK_SET 0x1e4
+#define ANADIG_USB1_LOOPBACK_CLR 0x1e8
+#define ANADIG_USB2_LOOPBACK_SET 0x244
+#define ANADIG_USB2_LOOPBACK_CLR 0x248
+
+#define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG BIT(12)
+#define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL BIT(11)
+
+#define BM_ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID BIT(3)
+#define BM_ANADIG_USB2_VBUS_DET_STAT_VBUS_VALID BIT(3)
+
+#define BM_ANADIG_USB1_LOOPBACK_UTMI_DIG_TST1 BIT(2)
+#define BM_ANADIG_USB1_LOOPBACK_TSTI_TX_EN BIT(5)
+#define BM_ANADIG_USB2_LOOPBACK_UTMI_DIG_TST1 BIT(2)
+#define BM_ANADIG_USB2_LOOPBACK_TSTI_TX_EN BIT(5)
+
+#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
+
+/* Do disconnection between PHY and controller without vbus */
+#define MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS BIT(0)
+
+/*
+ * The PHY will be in messy if there is a wakeup after putting
+ * bus to suspend (set portsc.suspendM) but before setting PHY to low
+ * power mode (set portsc.phcd).
+ */
+#define MXS_PHY_ABNORMAL_IN_SUSPEND BIT(1)
+
+/*
+ * The SOF sends too fast after resuming, it will cause disconnection
+ * between host and high speed device.
+ */
+#define MXS_PHY_SENDING_SOF_TOO_FAST BIT(2)
+
+/*
+ * IC has bug fixes logic, they include
+ * MXS_PHY_ABNORMAL_IN_SUSPEND and MXS_PHY_SENDING_SOF_TOO_FAST
+ * which are described at above flags, the RTL will handle it
+ * according to different versions.
+ */
+#define MXS_PHY_NEED_IP_FIX BIT(3)
+
+struct mxs_phy_data {
+ unsigned int flags;
+};
+
+static const struct mxs_phy_data imx23_phy_data = {
+ .flags = MXS_PHY_ABNORMAL_IN_SUSPEND | MXS_PHY_SENDING_SOF_TOO_FAST,
+};
+
+static const struct mxs_phy_data imx6q_phy_data = {
+ .flags = MXS_PHY_SENDING_SOF_TOO_FAST |
+ MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
+ MXS_PHY_NEED_IP_FIX,
+};
+
+static const struct mxs_phy_data imx6sl_phy_data = {
+ .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
+ MXS_PHY_NEED_IP_FIX,
+};
+
+static const struct of_device_id mxs_phy_dt_ids[] = {
+ { .compatible = "fsl,imx6sl-usbphy", .data = &imx6sl_phy_data, },
+ { .compatible = "fsl,imx6q-usbphy", .data = &imx6q_phy_data, },
+ { .compatible = "fsl,imx23-usbphy", .data = &imx23_phy_data, },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
+
struct mxs_phy {
struct usb_phy phy;
struct clk *clk;
+ const struct mxs_phy_data *data;
+ struct regmap *regmap_anatop;
+ int port_id;
};
-#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
+static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy)
+{
+ return mxs_phy->data == &imx6q_phy_data;
+}
+
+static inline bool is_imx6sl_phy(struct mxs_phy *mxs_phy)
+{
+ return mxs_phy->data == &imx6sl_phy_data;
+}
+
+/*
+ * PHY needs some 32K cycles to switch from 32K clock to
+ * bus (such as AHB/AXI, etc) clock.
+ */
+static void mxs_phy_clock_switch_delay(void)
+{
+ usleep_range(300, 400);
+}
static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
{
@@ -53,19 +172,105 @@
/* Power up the PHY */
writel(0, base + HW_USBPHY_PWD);
- /* enable FS/LS device */
- writel(BM_USBPHY_CTRL_ENUTMILEVEL2 |
- BM_USBPHY_CTRL_ENUTMILEVEL3,
+ /*
+ * USB PHY Ctrl Setting
+ * - Auto clock/power on
+ * - Enable full/low speed support
+ */
+ writel(BM_USBPHY_CTRL_ENAUTOSET_USBCLKS |
+ BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE |
+ BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD |
+ BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE |
+ BM_USBPHY_CTRL_ENAUTO_PWRON_PLL |
+ BM_USBPHY_CTRL_ENUTMILEVEL2 |
+ BM_USBPHY_CTRL_ENUTMILEVEL3,
base + HW_USBPHY_CTRL_SET);
+ if (mxs_phy->data->flags & MXS_PHY_NEED_IP_FIX)
+ writel(BM_USBPHY_IP_FIX, base + HW_USBPHY_IP_SET);
+
return 0;
}
+/* Return true if the vbus is there */
+static bool mxs_phy_get_vbus_status(struct mxs_phy *mxs_phy)
+{
+ unsigned int vbus_value;
+
+ if (mxs_phy->port_id == 0)
+ regmap_read(mxs_phy->regmap_anatop,
+ ANADIG_USB1_VBUS_DET_STAT,
+ &vbus_value);
+ else if (mxs_phy->port_id == 1)
+ regmap_read(mxs_phy->regmap_anatop,
+ ANADIG_USB2_VBUS_DET_STAT,
+ &vbus_value);
+
+ if (vbus_value & BM_ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID)
+ return true;
+ else
+ return false;
+}
+
+static void __mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool disconnect)
+{
+ void __iomem *base = mxs_phy->phy.io_priv;
+ u32 reg;
+
+ if (disconnect)
+ writel_relaxed(BM_USBPHY_DEBUG_CLKGATE,
+ base + HW_USBPHY_DEBUG_CLR);
+
+ if (mxs_phy->port_id == 0) {
+ reg = disconnect ? ANADIG_USB1_LOOPBACK_SET
+ : ANADIG_USB1_LOOPBACK_CLR;
+ regmap_write(mxs_phy->regmap_anatop, reg,
+ BM_ANADIG_USB1_LOOPBACK_UTMI_DIG_TST1 |
+ BM_ANADIG_USB1_LOOPBACK_TSTI_TX_EN);
+ } else if (mxs_phy->port_id == 1) {
+ reg = disconnect ? ANADIG_USB2_LOOPBACK_SET
+ : ANADIG_USB2_LOOPBACK_CLR;
+ regmap_write(mxs_phy->regmap_anatop, reg,
+ BM_ANADIG_USB2_LOOPBACK_UTMI_DIG_TST1 |
+ BM_ANADIG_USB2_LOOPBACK_TSTI_TX_EN);
+ }
+
+ if (!disconnect)
+ writel_relaxed(BM_USBPHY_DEBUG_CLKGATE,
+ base + HW_USBPHY_DEBUG_SET);
+
+ /* Delay some time, and let Linestate be SE0 for controller */
+ if (disconnect)
+ usleep_range(500, 1000);
+}
+
+static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on)
+{
+ bool vbus_is_on = false;
+
+ /* If the SoCs don't need to disconnect line without vbus, quit */
+ if (!(mxs_phy->data->flags & MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS))
+ return;
+
+ /* If the SoCs don't have anatop, quit */
+ if (!mxs_phy->regmap_anatop)
+ return;
+
+ vbus_is_on = mxs_phy_get_vbus_status(mxs_phy);
+
+ if (on && !vbus_is_on)
+ __mxs_phy_disconnect_line(mxs_phy, true);
+ else
+ __mxs_phy_disconnect_line(mxs_phy, false);
+
+}
+
static int mxs_phy_init(struct usb_phy *phy)
{
int ret;
struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+ mxs_phy_clock_switch_delay();
ret = clk_prepare_enable(mxs_phy->clk);
if (ret)
return ret;
@@ -94,6 +299,7 @@
x->io_priv + HW_USBPHY_CTRL_SET);
clk_disable_unprepare(mxs_phy->clk);
} else {
+ mxs_phy_clock_switch_delay();
ret = clk_prepare_enable(mxs_phy->clk);
if (ret)
return ret;
@@ -105,11 +311,28 @@
return 0;
}
+static int mxs_phy_set_wakeup(struct usb_phy *x, bool enabled)
+{
+ struct mxs_phy *mxs_phy = to_mxs_phy(x);
+ u32 value = BM_USBPHY_CTRL_ENVBUSCHG_WKUP |
+ BM_USBPHY_CTRL_ENDPDMCHG_WKUP |
+ BM_USBPHY_CTRL_ENIDCHG_WKUP;
+ if (enabled) {
+ mxs_phy_disconnect_line(mxs_phy, true);
+ writel_relaxed(value, x->io_priv + HW_USBPHY_CTRL_SET);
+ } else {
+ writel_relaxed(value, x->io_priv + HW_USBPHY_CTRL_CLR);
+ mxs_phy_disconnect_line(mxs_phy, false);
+ }
+
+ return 0;
+}
+
static int mxs_phy_on_connect(struct usb_phy *phy,
enum usb_device_speed speed)
{
- dev_dbg(phy->dev, "%s speed device has connected\n",
- (speed == USB_SPEED_HIGH) ? "high" : "non-high");
+ dev_dbg(phy->dev, "%s device has connected\n",
+ (speed == USB_SPEED_HIGH) ? "HS" : "FS/LS");
if (speed == USB_SPEED_HIGH)
writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
@@ -121,8 +344,8 @@
static int mxs_phy_on_disconnect(struct usb_phy *phy,
enum usb_device_speed speed)
{
- dev_dbg(phy->dev, "%s speed device has disconnected\n",
- (speed == USB_SPEED_HIGH) ? "high" : "non-high");
+ dev_dbg(phy->dev, "%s device has disconnected\n",
+ (speed == USB_SPEED_HIGH) ? "HS" : "FS/LS");
if (speed == USB_SPEED_HIGH)
writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
@@ -138,6 +361,9 @@
struct clk *clk;
struct mxs_phy *mxs_phy;
int ret;
+ const struct of_device_id *of_id =
+ of_match_device(mxs_phy_dt_ids, &pdev->dev);
+ struct device_node *np = pdev->dev.of_node;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
@@ -157,6 +383,22 @@
return -ENOMEM;
}
+ /* Some SoCs don't have anatop registers */
+ if (of_get_property(np, "fsl,anatop", NULL)) {
+ mxs_phy->regmap_anatop = syscon_regmap_lookup_by_phandle
+ (np, "fsl,anatop");
+ if (IS_ERR(mxs_phy->regmap_anatop)) {
+ dev_dbg(&pdev->dev,
+ "failed to find regmap for anatop\n");
+ return PTR_ERR(mxs_phy->regmap_anatop);
+ }
+ }
+
+ ret = of_alias_get_id(np, "usbphy");
+ if (ret < 0)
+ dev_dbg(&pdev->dev, "failed to get alias id, errno %d\n", ret);
+ mxs_phy->port_id = ret;
+
mxs_phy->phy.io_priv = base;
mxs_phy->phy.dev = &pdev->dev;
mxs_phy->phy.label = DRIVER_NAME;
@@ -166,11 +408,15 @@
mxs_phy->phy.notify_connect = mxs_phy_on_connect;
mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect;
mxs_phy->phy.type = USB_PHY_TYPE_USB2;
+ mxs_phy->phy.set_wakeup = mxs_phy_set_wakeup;
mxs_phy->clk = clk;
+ mxs_phy->data = of_id->data;
platform_set_drvdata(pdev, mxs_phy);
+ device_set_wakeup_capable(&pdev->dev, true);
+
ret = usb_add_phy_dev(&mxs_phy->phy);
if (ret)
return ret;
@@ -187,11 +433,46 @@
return 0;
}
-static const struct of_device_id mxs_phy_dt_ids[] = {
- { .compatible = "fsl,imx23-usbphy", },
- { /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
+#ifdef CONFIG_PM_SLEEP
+static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on)
+{
+ unsigned int reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR;
+
+ /* If the SoCs don't have anatop, quit */
+ if (!mxs_phy->regmap_anatop)
+ return;
+
+ if (is_imx6q_phy(mxs_phy))
+ regmap_write(mxs_phy->regmap_anatop, reg,
+ BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG);
+ else if (is_imx6sl_phy(mxs_phy))
+ regmap_write(mxs_phy->regmap_anatop,
+ reg, BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL);
+}
+
+static int mxs_phy_system_suspend(struct device *dev)
+{
+ struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ mxs_phy_enable_ldo_in_suspend(mxs_phy, true);
+
+ return 0;
+}
+
+static int mxs_phy_system_resume(struct device *dev)
+{
+ struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ mxs_phy_enable_ldo_in_suspend(mxs_phy, false);
+
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(mxs_phy_pm, mxs_phy_system_suspend,
+ mxs_phy_system_resume);
static struct platform_driver mxs_phy_driver = {
.probe = mxs_phy_probe,
@@ -200,6 +481,7 @@
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.of_match_table = mxs_phy_dt_ids,
+ .pm = &mxs_phy_pm,
},
};
diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c
deleted file mode 100644
index e725318..0000000
--- a/drivers/usb/phy/phy-omap-control.c
+++ /dev/null
@@ -1,319 +0,0 @@
-/*
- * omap-control-usb.c - The USB part of control module.
- *
- * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * Author: Kishon Vijay Abraham I <kishon@ti.com>
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/usb/omap_control_usb.h>
-
-/**
- * omap_control_usb_phy_power - power on/off the phy using control module reg
- * @dev: the control module device
- * @on: 0 or 1, based on powering on or off the PHY
- */
-void omap_control_usb_phy_power(struct device *dev, int on)
-{
- u32 val;
- unsigned long rate;
- struct omap_control_usb *control_usb;
-
- if (IS_ERR(dev) || !dev) {
- pr_err("%s: invalid device\n", __func__);
- return;
- }
-
- control_usb = dev_get_drvdata(dev);
- if (!control_usb) {
- dev_err(dev, "%s: invalid control usb device\n", __func__);
- return;
- }
-
- if (control_usb->type == OMAP_CTRL_TYPE_OTGHS)
- return;
-
- val = readl(control_usb->power);
-
- switch (control_usb->type) {
- case OMAP_CTRL_TYPE_USB2:
- if (on)
- val &= ~OMAP_CTRL_DEV_PHY_PD;
- else
- val |= OMAP_CTRL_DEV_PHY_PD;
- break;
-
- case OMAP_CTRL_TYPE_PIPE3:
- rate = clk_get_rate(control_usb->sys_clk);
- rate = rate/1000000;
-
- if (on) {
- val &= ~(OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK |
- OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK);
- val |= OMAP_CTRL_USB3_PHY_TX_RX_POWERON <<
- OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT;
- val |= rate << OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT;
- } else {
- val &= ~OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK;
- val |= OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF <<
- OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT;
- }
- break;
-
- case OMAP_CTRL_TYPE_DRA7USB2:
- if (on)
- val &= ~OMAP_CTRL_USB2_PHY_PD;
- else
- val |= OMAP_CTRL_USB2_PHY_PD;
- break;
-
- case OMAP_CTRL_TYPE_AM437USB2:
- if (on) {
- val &= ~(AM437X_CTRL_USB2_PHY_PD |
- AM437X_CTRL_USB2_OTG_PD);
- val |= (AM437X_CTRL_USB2_OTGVDET_EN |
- AM437X_CTRL_USB2_OTGSESSEND_EN);
- } else {
- val &= ~(AM437X_CTRL_USB2_OTGVDET_EN |
- AM437X_CTRL_USB2_OTGSESSEND_EN);
- val |= (AM437X_CTRL_USB2_PHY_PD |
- AM437X_CTRL_USB2_OTG_PD);
- }
- break;
- default:
- dev_err(dev, "%s: type %d not recognized\n",
- __func__, control_usb->type);
- break;
- }
-
- writel(val, control_usb->power);
-}
-EXPORT_SYMBOL_GPL(omap_control_usb_phy_power);
-
-/**
- * omap_control_usb_host_mode - set AVALID, VBUSVALID and ID pin in grounded
- * @ctrl_usb: struct omap_control_usb *
- *
- * Writes to the mailbox register to notify the usb core that a usb
- * device has been connected.
- */
-static void omap_control_usb_host_mode(struct omap_control_usb *ctrl_usb)
-{
- u32 val;
-
- val = readl(ctrl_usb->otghs_control);
- val &= ~(OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_SESSEND);
- val |= OMAP_CTRL_DEV_AVALID | OMAP_CTRL_DEV_VBUSVALID;
- writel(val, ctrl_usb->otghs_control);
-}
-
-/**
- * omap_control_usb_device_mode - set AVALID, VBUSVALID and ID pin in high
- * impedance
- * @ctrl_usb: struct omap_control_usb *
- *
- * Writes to the mailbox register to notify the usb core that it has been
- * connected to a usb host.
- */
-static void omap_control_usb_device_mode(struct omap_control_usb *ctrl_usb)
-{
- u32 val;
-
- val = readl(ctrl_usb->otghs_control);
- val &= ~OMAP_CTRL_DEV_SESSEND;
- val |= OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_AVALID |
- OMAP_CTRL_DEV_VBUSVALID;
- writel(val, ctrl_usb->otghs_control);
-}
-
-/**
- * omap_control_usb_set_sessionend - Enable SESSIONEND and IDIG to high
- * impedance
- * @ctrl_usb: struct omap_control_usb *
- *
- * Writes to the mailbox register to notify the usb core it's now in
- * disconnected state.
- */
-static void omap_control_usb_set_sessionend(struct omap_control_usb *ctrl_usb)
-{
- u32 val;
-
- val = readl(ctrl_usb->otghs_control);
- val &= ~(OMAP_CTRL_DEV_AVALID | OMAP_CTRL_DEV_VBUSVALID);
- val |= OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_SESSEND;
- writel(val, ctrl_usb->otghs_control);
-}
-
-/**
- * omap_control_usb_set_mode - Calls to functions to set USB in one of host mode
- * or device mode or to denote disconnected state
- * @dev: the control module device
- * @mode: The mode to which usb should be configured
- *
- * This is an API to write to the mailbox register to notify the usb core that
- * a usb device has been connected.
- */
-void omap_control_usb_set_mode(struct device *dev,
- enum omap_control_usb_mode mode)
-{
- struct omap_control_usb *ctrl_usb;
-
- if (IS_ERR(dev) || !dev)
- return;
-
- ctrl_usb = dev_get_drvdata(dev);
-
- if (!ctrl_usb) {
- dev_err(dev, "Invalid control usb device\n");
- return;
- }
-
- if (ctrl_usb->type != OMAP_CTRL_TYPE_OTGHS)
- return;
-
- switch (mode) {
- case USB_MODE_HOST:
- omap_control_usb_host_mode(ctrl_usb);
- break;
- case USB_MODE_DEVICE:
- omap_control_usb_device_mode(ctrl_usb);
- break;
- case USB_MODE_DISCONNECT:
- omap_control_usb_set_sessionend(ctrl_usb);
- break;
- default:
- dev_vdbg(dev, "invalid omap control usb mode\n");
- }
-}
-EXPORT_SYMBOL_GPL(omap_control_usb_set_mode);
-
-#ifdef CONFIG_OF
-
-static const enum omap_control_usb_type otghs_data = OMAP_CTRL_TYPE_OTGHS;
-static const enum omap_control_usb_type usb2_data = OMAP_CTRL_TYPE_USB2;
-static const enum omap_control_usb_type pipe3_data = OMAP_CTRL_TYPE_PIPE3;
-static const enum omap_control_usb_type dra7usb2_data = OMAP_CTRL_TYPE_DRA7USB2;
-static const enum omap_control_usb_type am437usb2_data = OMAP_CTRL_TYPE_AM437USB2;
-
-static const struct of_device_id omap_control_usb_id_table[] = {
- {
- .compatible = "ti,control-phy-otghs",
- .data = &otghs_data,
- },
- {
- .compatible = "ti,control-phy-usb2",
- .data = &usb2_data,
- },
- {
- .compatible = "ti,control-phy-pipe3",
- .data = &pipe3_data,
- },
- {
- .compatible = "ti,control-phy-dra7usb2",
- .data = &dra7usb2_data,
- },
- {
- .compatible = "ti,control-phy-am437usb2",
- .data = &am437usb2_data,
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, omap_control_usb_id_table);
-#endif
-
-
-static int omap_control_usb_probe(struct platform_device *pdev)
-{
- struct resource *res;
- const struct of_device_id *of_id;
- struct omap_control_usb *control_usb;
-
- of_id = of_match_device(of_match_ptr(omap_control_usb_id_table),
- &pdev->dev);
- if (!of_id)
- return -EINVAL;
-
- control_usb = devm_kzalloc(&pdev->dev, sizeof(*control_usb),
- GFP_KERNEL);
- if (!control_usb) {
- dev_err(&pdev->dev, "unable to alloc memory for control usb\n");
- return -ENOMEM;
- }
-
- control_usb->dev = &pdev->dev;
- control_usb->type = *(enum omap_control_usb_type *)of_id->data;
-
- if (control_usb->type == OMAP_CTRL_TYPE_OTGHS) {
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- "otghs_control");
- control_usb->otghs_control = devm_ioremap_resource(
- &pdev->dev, res);
- if (IS_ERR(control_usb->otghs_control))
- return PTR_ERR(control_usb->otghs_control);
- } else {
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- "power");
- control_usb->power = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(control_usb->power)) {
- dev_err(&pdev->dev, "Couldn't get power register\n");
- return PTR_ERR(control_usb->power);
- }
- }
-
- if (control_usb->type == OMAP_CTRL_TYPE_PIPE3) {
- control_usb->sys_clk = devm_clk_get(control_usb->dev,
- "sys_clkin");
- if (IS_ERR(control_usb->sys_clk)) {
- pr_err("%s: unable to get sys_clkin\n", __func__);
- return -EINVAL;
- }
- }
-
- dev_set_drvdata(control_usb->dev, control_usb);
-
- return 0;
-}
-
-static struct platform_driver omap_control_usb_driver = {
- .probe = omap_control_usb_probe,
- .driver = {
- .name = "omap-control-usb",
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(omap_control_usb_id_table),
- },
-};
-
-static int __init omap_control_usb_init(void)
-{
- return platform_driver_register(&omap_control_usb_driver);
-}
-subsys_initcall(omap_control_usb_init);
-
-static void __exit omap_control_usb_exit(void)
-{
- platform_driver_unregister(&omap_control_usb_driver);
-}
-module_exit(omap_control_usb_exit);
-
-MODULE_ALIAS("platform: omap_control_usb");
-MODULE_AUTHOR("Texas Instruments Inc.");
-MODULE_DESCRIPTION("OMAP Control Module USB Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/usb/phy/phy-omap-usb3.c
deleted file mode 100644
index 0c6ba29..0000000
--- a/drivers/usb/phy/phy-omap-usb3.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/*
- * omap-usb3 - USB PHY, talking to dwc3 controller in OMAP.
- *
- * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * Author: Kishon Vijay Abraham I <kishon@ti.com>
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/usb/omap_usb.h>
-#include <linux/of.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/pm_runtime.h>
-#include <linux/delay.h>
-#include <linux/usb/omap_control_usb.h>
-#include <linux/of_platform.h>
-
-#define PLL_STATUS 0x00000004
-#define PLL_GO 0x00000008
-#define PLL_CONFIGURATION1 0x0000000C
-#define PLL_CONFIGURATION2 0x00000010
-#define PLL_CONFIGURATION3 0x00000014
-#define PLL_CONFIGURATION4 0x00000020
-
-#define PLL_REGM_MASK 0x001FFE00
-#define PLL_REGM_SHIFT 0x9
-#define PLL_REGM_F_MASK 0x0003FFFF
-#define PLL_REGM_F_SHIFT 0x0
-#define PLL_REGN_MASK 0x000001FE
-#define PLL_REGN_SHIFT 0x1
-#define PLL_SELFREQDCO_MASK 0x0000000E
-#define PLL_SELFREQDCO_SHIFT 0x1
-#define PLL_SD_MASK 0x0003FC00
-#define PLL_SD_SHIFT 0x9
-#define SET_PLL_GO 0x1
-#define PLL_TICOPWDN 0x10000
-#define PLL_LOCK 0x2
-#define PLL_IDLE 0x1
-
-/*
- * This is an Empirical value that works, need to confirm the actual
- * value required for the USB3PHY_PLL_CONFIGURATION2.PLL_IDLE status
- * to be correctly reflected in the USB3PHY_PLL_STATUS register.
- */
-# define PLL_IDLE_TIME 100;
-
-struct usb_dpll_map {
- unsigned long rate;
- struct usb_dpll_params params;
-};
-
-static struct usb_dpll_map dpll_map[] = {
- {12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */
- {16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */
- {19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */
- {20000000, {1000, 7, 4, 10, 0} }, /* 20 MHz */
- {26000000, {1250, 12, 4, 20, 0} }, /* 26 MHz */
- {38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */
-};
-
-static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(dpll_map); i++) {
- if (rate == dpll_map[i].rate)
- return &dpll_map[i].params;
- }
-
- return NULL;
-}
-
-static int omap_usb3_suspend(struct usb_phy *x, int suspend)
-{
- struct omap_usb *phy = phy_to_omapusb(x);
- int val;
- int timeout = PLL_IDLE_TIME;
-
- if (suspend && !phy->is_suspended) {
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
- val |= PLL_IDLE;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
-
- do {
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS);
- if (val & PLL_TICOPWDN)
- break;
- udelay(1);
- } while (--timeout);
-
- omap_control_usb_phy_power(phy->control_dev, 0);
-
- phy->is_suspended = 1;
- } else if (!suspend && phy->is_suspended) {
- phy->is_suspended = 0;
-
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
- val &= ~PLL_IDLE;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
-
- do {
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS);
- if (!(val & PLL_TICOPWDN))
- break;
- udelay(1);
- } while (--timeout);
- }
-
- return 0;
-}
-
-static void omap_usb_dpll_relock(struct omap_usb *phy)
-{
- u32 val;
- unsigned long timeout;
-
- omap_usb_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO);
-
- timeout = jiffies + msecs_to_jiffies(20);
- do {
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS);
- if (val & PLL_LOCK)
- break;
- } while (!WARN_ON(time_after(jiffies, timeout)));
-}
-
-static int omap_usb_dpll_lock(struct omap_usb *phy)
-{
- u32 val;
- unsigned long rate;
- struct usb_dpll_params *dpll_params;
-
- rate = clk_get_rate(phy->sys_clk);
- dpll_params = omap_usb3_get_dpll_params(rate);
- if (!dpll_params) {
- dev_err(phy->dev,
- "No DPLL configuration for %lu Hz SYS CLK\n", rate);
- return -EINVAL;
- }
-
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
- val &= ~PLL_REGN_MASK;
- val |= dpll_params->n << PLL_REGN_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
-
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
- val &= ~PLL_SELFREQDCO_MASK;
- val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
-
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
- val &= ~PLL_REGM_MASK;
- val |= dpll_params->m << PLL_REGM_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
-
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4);
- val &= ~PLL_REGM_F_MASK;
- val |= dpll_params->mf << PLL_REGM_F_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val);
-
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3);
- val &= ~PLL_SD_MASK;
- val |= dpll_params->sd << PLL_SD_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val);
-
- omap_usb_dpll_relock(phy);
-
- return 0;
-}
-
-static int omap_usb3_init(struct usb_phy *x)
-{
- struct omap_usb *phy = phy_to_omapusb(x);
- int ret;
-
- ret = omap_usb_dpll_lock(phy);
- if (ret)
- return ret;
-
- omap_control_usb_phy_power(phy->control_dev, 1);
-
- return 0;
-}
-
-static int omap_usb3_probe(struct platform_device *pdev)
-{
- struct omap_usb *phy;
- struct resource *res;
- struct device_node *node = pdev->dev.of_node;
- struct device_node *control_node;
- struct platform_device *control_pdev;
-
- if (!node)
- return -EINVAL;
-
- phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
- if (!phy) {
- dev_err(&pdev->dev, "unable to alloc mem for OMAP USB3 PHY\n");
- return -ENOMEM;
- }
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll_ctrl");
- phy->pll_ctrl_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(phy->pll_ctrl_base))
- return PTR_ERR(phy->pll_ctrl_base);
-
- phy->dev = &pdev->dev;
-
- phy->phy.dev = phy->dev;
- phy->phy.label = "omap-usb3";
- phy->phy.init = omap_usb3_init;
- phy->phy.set_suspend = omap_usb3_suspend;
- phy->phy.type = USB_PHY_TYPE_USB3;
-
- phy->is_suspended = 1;
- phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k");
- if (IS_ERR(phy->wkupclk)) {
- dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n");
- return PTR_ERR(phy->wkupclk);
- }
- clk_prepare(phy->wkupclk);
-
- phy->optclk = devm_clk_get(phy->dev, "usb_otg_ss_refclk960m");
- if (IS_ERR(phy->optclk)) {
- dev_err(&pdev->dev, "unable to get usb_otg_ss_refclk960m\n");
- return PTR_ERR(phy->optclk);
- }
- clk_prepare(phy->optclk);
-
- phy->sys_clk = devm_clk_get(phy->dev, "sys_clkin");
- if (IS_ERR(phy->sys_clk)) {
- pr_err("%s: unable to get sys_clkin\n", __func__);
- return -EINVAL;
- }
-
- control_node = of_parse_phandle(node, "ctrl-module", 0);
- if (!control_node) {
- dev_err(&pdev->dev, "Failed to get control device phandle\n");
- return -EINVAL;
- }
- control_pdev = of_find_device_by_node(control_node);
- if (!control_pdev) {
- dev_err(&pdev->dev, "Failed to get control device\n");
- return -EINVAL;
- }
-
- phy->control_dev = &control_pdev->dev;
-
- omap_control_usb_phy_power(phy->control_dev, 0);
- usb_add_phy_dev(&phy->phy);
-
- platform_set_drvdata(pdev, phy);
-
- pm_runtime_enable(phy->dev);
- pm_runtime_get(&pdev->dev);
-
- return 0;
-}
-
-static int omap_usb3_remove(struct platform_device *pdev)
-{
- struct omap_usb *phy = platform_get_drvdata(pdev);
-
- clk_unprepare(phy->wkupclk);
- clk_unprepare(phy->optclk);
- usb_remove_phy(&phy->phy);
- if (!pm_runtime_suspended(&pdev->dev))
- pm_runtime_put(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
-
- return 0;
-}
-
-#ifdef CONFIG_PM_RUNTIME
-
-static int omap_usb3_runtime_suspend(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct omap_usb *phy = platform_get_drvdata(pdev);
-
- clk_disable(phy->wkupclk);
- clk_disable(phy->optclk);
-
- return 0;
-}
-
-static int omap_usb3_runtime_resume(struct device *dev)
-{
- u32 ret = 0;
- struct platform_device *pdev = to_platform_device(dev);
- struct omap_usb *phy = platform_get_drvdata(pdev);
-
- ret = clk_enable(phy->optclk);
- if (ret) {
- dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
- goto err1;
- }
-
- ret = clk_enable(phy->wkupclk);
- if (ret) {
- dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
- goto err2;
- }
-
- return 0;
-
-err2:
- clk_disable(phy->optclk);
-
-err1:
- return ret;
-}
-
-static const struct dev_pm_ops omap_usb3_pm_ops = {
- SET_RUNTIME_PM_OPS(omap_usb3_runtime_suspend, omap_usb3_runtime_resume,
- NULL)
-};
-
-#define DEV_PM_OPS (&omap_usb3_pm_ops)
-#else
-#define DEV_PM_OPS NULL
-#endif
-
-#ifdef CONFIG_OF
-static const struct of_device_id omap_usb3_id_table[] = {
- { .compatible = "ti,omap-usb3" },
- {}
-};
-MODULE_DEVICE_TABLE(of, omap_usb3_id_table);
-#endif
-
-static struct platform_driver omap_usb3_driver = {
- .probe = omap_usb3_probe,
- .remove = omap_usb3_remove,
- .driver = {
- .name = "omap-usb3",
- .owner = THIS_MODULE,
- .pm = DEV_PM_OPS,
- .of_match_table = of_match_ptr(omap_usb3_id_table),
- },
-};
-
-module_platform_driver(omap_usb3_driver);
-
-MODULE_ALIAS("platform: omap_usb3");
-MODULE_AUTHOR("Texas Instruments Inc.");
-MODULE_DESCRIPTION("OMAP USB3 phy driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/phy/phy-rcar-gen2-usb.c b/drivers/usb/phy/phy-rcar-gen2-usb.c
index 551e0a6..388d89f 100644
--- a/drivers/usb/phy/phy-rcar-gen2-usb.c
+++ b/drivers/usb/phy/phy-rcar-gen2-usb.c
@@ -177,15 +177,15 @@
struct clk *clk;
int retval;
- pdata = dev_get_platdata(&pdev->dev);
+ pdata = dev_get_platdata(dev);
if (!pdata) {
dev_err(dev, "No platform data\n");
return -EINVAL;
}
- clk = devm_clk_get(&pdev->dev, "usbhs");
+ clk = devm_clk_get(dev, "usbhs");
if (IS_ERR(clk)) {
- dev_err(&pdev->dev, "Can't get the clock\n");
+ dev_err(dev, "Can't get the clock\n");
return PTR_ERR(clk);
}
diff --git a/drivers/usb/phy/phy-twl6030-usb.c b/drivers/usb/phy/phy-twl6030-usb.c
index 214172b..04778cf 100644
--- a/drivers/usb/phy/phy-twl6030-usb.c
+++ b/drivers/usb/phy/phy-twl6030-usb.c
@@ -27,7 +27,7 @@
#include <linux/io.h>
#include <linux/usb/musb-omap.h>
#include <linux/usb/phy_companion.h>
-#include <linux/usb/omap_usb.h>
+#include <linux/phy/omap_usb.h>
#include <linux/i2c/twl.h>
#include <linux/regulator/consumer.h>
#include <linux/err.h>
diff --git a/drivers/usb/phy/phy-ulpi.c b/drivers/usb/phy/phy-ulpi.c
index 217339d..17ea3f2 100644
--- a/drivers/usb/phy/phy-ulpi.c
+++ b/drivers/usb/phy/phy-ulpi.c
@@ -47,6 +47,8 @@
static struct ulpi_info ulpi_ids[] = {
ULPI_INFO(ULPI_ID(0x04cc, 0x1504), "NXP ISP1504"),
ULPI_INFO(ULPI_ID(0x0424, 0x0006), "SMSC USB331x"),
+ ULPI_INFO(ULPI_ID(0x0424, 0x0007), "SMSC USB3320"),
+ ULPI_INFO(ULPI_ID(0x0451, 0x1507), "TI TUSB1210"),
};
static int ulpi_set_otg_flags(struct usb_phy *phy)
diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 82371f6..2d72aa3 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -323,11 +323,11 @@
if (r)
goto out;
- dev_dbg(&port->dev, "%s - submitting interrupt urb", __func__);
+ dev_dbg(&port->dev, "%s - submitting interrupt urb\n", __func__);
r = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
if (r) {
- dev_err(&port->dev, "%s - failed submitting interrupt urb,"
- " error %d\n", __func__, r);
+ dev_err(&port->dev, "%s - failed to submit interrupt urb: %d\n",
+ __func__, r);
ch341_close(port);
goto out;
}
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
index 0ac3b3b..2916dea 100644
--- a/drivers/usb/serial/cyberjack.c
+++ b/drivers/usb/serial/cyberjack.c
@@ -220,7 +220,7 @@
result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
if (result) {
dev_err(&port->dev,
- "%s - failed submitting write urb, error %d",
+ "%s - failed submitting write urb, error %d\n",
__func__, result);
/* Throw away data. No better idea what to do with it. */
priv->wrfilled = 0;
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index bccb122..01bf533 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -279,7 +279,7 @@
* the generic firmware, but are not used with
* NMEA and SiRF protocols */
dev_dbg(&port->dev,
- "%s - failed setting baud rate, unsupported speed of %d on Earthmate GPS",
+ "%s - failed setting baud rate, unsupported speed of %d on Earthmate GPS\n",
__func__, new_rate);
return -1;
}
@@ -1224,7 +1224,6 @@
struct usb_serial_port *port = urb->context;
struct cypress_private *priv = usb_get_serial_port_data(port);
struct device *dev = &urb->dev->dev;
- int result;
int status = urb->status;
switch (status) {
@@ -1239,21 +1238,9 @@
__func__, status);
priv->write_urb_in_use = 0;
return;
- case -EPIPE: /* no break needed; clear halt and resubmit */
- if (!priv->comm_is_ok)
- break;
- usb_clear_halt(port->serial->dev, 0x02);
- /* error in the urb, so we have to resubmit it */
- dev_dbg(dev, "%s - nonzero write bulk status received: %d\n",
- __func__, status);
- port->interrupt_out_urb->transfer_buffer_length = 1;
- result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC);
- if (!result)
- return;
- dev_err(dev, "%s - failed resubmitting write urb, error %d\n",
- __func__, result);
- cypress_set_dead(port);
- break;
+ case -EPIPE:
+ /* Cannot call usb_clear_halt while in_interrupt */
+ /* FALLTHROUGH */
default:
dev_err(dev, "%s - unexpected nonzero write status received: %d\n",
__func__, status);
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index b63ce02..1bd1922 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -332,9 +332,9 @@
* stuff like 3G modems, so shortcircuit it in the 99.9999999% of
* cases where the USB serial is not a console anyway.
*/
- if (!port->port.console || !port->sysrq)
+ if (!port->port.console || !port->sysrq) {
tty_insert_flip_string(&port->port, ch, urb->actual_length);
- else {
+ } else {
for (i = 0; i < urb->actual_length; i++, ch++) {
if (!usb_serial_handle_sysrq_char(port, *ch))
tty_insert_flip_char(&port->port, *ch, TTY_NORMAL);
@@ -359,24 +359,38 @@
dev_dbg(&port->dev, "%s - urb %d, len %d\n", __func__, i,
urb->actual_length);
-
- if (urb->status) {
- dev_dbg(&port->dev, "%s - non-zero urb status: %d\n",
- __func__, urb->status);
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ENOENT:
+ case -ECONNRESET:
+ case -ESHUTDOWN:
+ dev_dbg(&port->dev, "%s - urb stopped: %d\n",
+ __func__, urb->status);
return;
+ case -EPIPE:
+ dev_err(&port->dev, "%s - urb stopped: %d\n",
+ __func__, urb->status);
+ return;
+ default:
+ dev_err(&port->dev, "%s - nonzero urb status: %d\n",
+ __func__, urb->status);
+ goto resubmit;
}
usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
port->serial->type->process_read_urb(urb);
+resubmit:
/* Throttle the device if requested by tty */
spin_lock_irqsave(&port->lock, flags);
port->throttled = port->throttle_req;
if (!port->throttled) {
spin_unlock_irqrestore(&port->lock, flags);
usb_serial_generic_submit_read_urb(port, i, GFP_ATOMIC);
- } else
+ } else {
spin_unlock_irqrestore(&port->lock, flags);
+ }
}
EXPORT_SYMBOL_GPL(usb_serial_generic_read_bulk_callback);
@@ -384,29 +398,38 @@
{
unsigned long flags;
struct usb_serial_port *port = urb->context;
- int status = urb->status;
int i;
- for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
+ for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) {
if (port->write_urbs[i] == urb)
break;
-
+ }
spin_lock_irqsave(&port->lock, flags);
port->tx_bytes -= urb->transfer_buffer_length;
set_bit(i, &port->write_urbs_free);
spin_unlock_irqrestore(&port->lock, flags);
- if (status) {
- dev_dbg(&port->dev, "%s - non-zero urb status: %d\n",
- __func__, status);
-
- spin_lock_irqsave(&port->lock, flags);
- kfifo_reset_out(&port->write_fifo);
- spin_unlock_irqrestore(&port->lock, flags);
- } else {
- usb_serial_generic_write_start(port, GFP_ATOMIC);
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ENOENT:
+ case -ECONNRESET:
+ case -ESHUTDOWN:
+ dev_dbg(&port->dev, "%s - urb stopped: %d\n",
+ __func__, urb->status);
+ return;
+ case -EPIPE:
+ dev_err_console(port, "%s - urb stopped: %d\n",
+ __func__, urb->status);
+ return;
+ default:
+ dev_err_console(port, "%s - nonzero urb status: %d\n",
+ __func__, urb->status);
+ goto resubmit;
}
+resubmit:
+ usb_serial_generic_write_start(port, GFP_ATOMIC);
usb_serial_port_softint(port);
}
EXPORT_SYMBOL_GPL(usb_serial_generic_write_bulk_callback);
diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
index d00dae1..5ad4a0f 100644
--- a/drivers/usb/serial/iuu_phoenix.c
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -1151,7 +1151,7 @@
goto fail_store_vcc_mode;
}
- dev_dbg(dev, "%s: setting vcc_mode = %ld", __func__, v);
+ dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v);
if ((v != 3) && (v != 5)) {
dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 265c677..d3acaea 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -397,17 +397,6 @@
msg = (struct keyspan_usa26_portStatusMessage *)data;
-#if 0
- dev_dbg(&urb->dev->dev,
- "%s - port status: port %d cts %d dcd %d dsr %d ri %d toff %d txoff %d rxen %d cr %d",
- __func__, msg->port, msg->hskia_cts, msg->gpia_dcd, msg->dsr,
- msg->ri, msg->_txOff, msg->_txXoff, msg->rxEnabled,
- msg->controlResponse);
-#endif
-
- /* Now do something useful with the data */
-
-
/* Check port number from message and retrieve private data */
if (msg->port >= serial->num_ports) {
dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
@@ -523,9 +512,6 @@
goto exit;
}
- /*dev_dbg(&urb->dev->dev, "%s %12ph", __func__, data);*/
-
- /* Now do something useful with the data */
msg = (struct keyspan_usa28_portStatusMessage *)data;
/* Check port number from message and retrieve private data */
@@ -605,9 +591,6 @@
goto exit;
}
- /*dev_dbg(&urb->dev->dev, "%s: %11ph", __func__, data);*/
-
- /* Now do something useful with the data */
msg = (struct keyspan_usa49_portStatusMessage *)data;
/* Check port number from message and retrieve private data */
@@ -1793,12 +1776,6 @@
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed\n", __func__);
-#if 0
- else {
- dev_dbg(&port->dev, "%s - usb_submit_urb(setup) OK %d bytes\n", __func__,
- this_urb->transfer_buffer_length);
- }
-#endif
return 0;
}
@@ -1976,13 +1953,6 @@
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
-#if 0
- else {
- dev_dbg(&port->dev, "%s - usb_submit_urb(%d) OK %d bytes (end %d)\n", __func__,
- outcont_urb, this_urb->transfer_buffer_length,
- usb_pipeendpoint(this_urb->pipe));
- }
-#endif
return 0;
}
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index e972412..742d827 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -189,7 +189,7 @@
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
dev_err(&port->dev,
- "%s - usb_submit_urb failed with result %d",
+ "%s - usb_submit_urb failed with result %d\n",
__func__, retval);
}
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index c88cc49..d7440b7 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -201,7 +201,7 @@
else {
status = get_unaligned_le16(status_buf);
- dev_info(&port->serial->dev->dev, "read status %x %x",
+ dev_info(&port->serial->dev->dev, "read status %x %x\n",
status_buf[0], status_buf[1]);
*line_state_p = klsi_105_status2linestate(status);
@@ -464,7 +464,7 @@
priv->cfg.baudrate = kl5kusb105a_sio_b115200;
break;
default:
- dev_dbg(dev, "KLSI USB->Serial converter: unsupported baudrate request, using default of 9600");
+ dev_dbg(dev, "unsupported baudrate, using 9600\n");
priv->cfg.baudrate = kl5kusb105a_sio_b9600;
baud = 9600;
break;
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index 618c1c1..fee2423 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -557,7 +557,8 @@
);
dev_dbg(&port->dev,
- "%s - Send reset_all_queues (FLUSH) URB returns: %i", __func__, result);
+ "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
+ __func__, result);
kfree(transfer_buffer);
return (result < 0) ? -EIO: 0;
default:
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 4eb2772..dfd728a 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -209,7 +209,7 @@
index, NULL, 0, MOS_WDR_TIMEOUT);
if (status < 0)
dev_err(&usbdev->dev,
- "mos7720: usb_control_msg() failed: %d", status);
+ "mos7720: usb_control_msg() failed: %d\n", status);
return status;
}
@@ -240,7 +240,7 @@
*data = *buf;
else if (status < 0)
dev_err(&usbdev->dev,
- "mos7720: usb_control_msg() failed: %d", status);
+ "mos7720: usb_control_msg() failed: %d\n", status);
kfree(buf);
return status;
@@ -399,7 +399,7 @@
&mos_parport->deferred_urbs);
spin_unlock_irqrestore(&mos_parport->listlock, flags);
tasklet_schedule(&mos_parport->urb_tasklet);
- dev_dbg(&usbdev->dev, "tasklet scheduled");
+ dev_dbg(&usbdev->dev, "tasklet scheduled\n");
return 0;
}
@@ -418,7 +418,7 @@
mutex_unlock(&serial->disc_mutex);
if (ret_val) {
dev_err(&usbdev->dev,
- "%s: submit_urb() failed: %d", __func__, ret_val);
+ "%s: submit_urb() failed: %d\n", __func__, ret_val);
spin_lock_irqsave(&mos_parport->listlock, flags);
list_del(&urbtrack->urblist_entry);
spin_unlock_irqrestore(&mos_parport->listlock, flags);
@@ -656,7 +656,7 @@
parport_epilogue(pp);
if (retval) {
dev_err(&mos_parport->serial->dev->dev,
- "mos7720: usb_bulk_msg() failed: %d", retval);
+ "mos7720: usb_bulk_msg() failed: %d\n", retval);
return 0;
}
return actual_len;
@@ -875,7 +875,7 @@
if (!(iir & 0x01)) { /* serial port interrupt pending */
switch (iir & 0x0f) {
case SERIAL_IIR_RLS:
- dev_dbg(dev, "Serial Port: Receiver status error or address bit detected in 9-bit mode\n\n");
+ dev_dbg(dev, "Serial Port: Receiver status error or address bit detected in 9-bit mode\n");
break;
case SERIAL_IIR_CTI:
dev_dbg(dev, "Serial Port: Receiver time out\n");
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index e9d967f..393be56 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -522,11 +522,11 @@
case -ENOENT:
case -ESHUTDOWN:
/* This urb is terminated, clean up */
- dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d",
+ dev_dbg(&urb->dev->dev, "%s - urb shutting down: %d\n",
__func__, urb->status);
break;
default:
- dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d",
+ dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n",
__func__, urb->status);
}
}
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index 7725ed2..504f5bff 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -372,7 +372,7 @@
device_port, data, 2, QT2_USB_TIMEOUT);
if (status < 0) {
- dev_err(&port->dev, "%s - open port failed %i", __func__,
+ dev_err(&port->dev, "%s - open port failed %i\n", __func__,
status);
kfree(data);
return status;
diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c
index 4ec04f7..ef0dbf0 100644
--- a/drivers/usb/serial/spcp8x5.c
+++ b/drivers/usb/serial/spcp8x5.c
@@ -220,9 +220,9 @@
GET_UART_STATUS, GET_UART_STATUS_TYPE,
0, GET_UART_STATUS_MSR, buf, 1, 100);
if (ret < 0)
- dev_err(&port->dev, "failed to get modem status: %d", ret);
+ dev_err(&port->dev, "failed to get modem status: %d\n", ret);
- dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x", ret, *buf);
+ dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x\n", ret, *buf);
*status = *buf;
kfree(buf);
@@ -342,8 +342,7 @@
case 1000000:
buf[0] = 0x0b; break;
default:
- dev_err(&port->dev, "spcp825 driver does not support the "
- "baudrate requested, using default of 9600.\n");
+ dev_err(&port->dev, "unsupported baudrate, using 9600\n");
}
/* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
index 9fa7dd4..8fceec7 100644
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -74,9 +74,7 @@
tty_insert_flip_string(&port->port, &data[1], data_length);
tty_flip_buffer_push(&port->port);
} else {
- dev_dbg(&port->dev,
- "Improper amount of data received from the device, "
- "%d bytes", urb->actual_length);
+ dev_dbg(&port->dev, "%s - short packet\n", __func__);
}
exit:
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index ec7cea5..3dd3ff8 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -293,7 +293,7 @@
int status;
dev_dbg(&dev->dev,
- "%s - product 0x%4X, num configurations %d, configuration value %d",
+ "%s - product 0x%4X, num configurations %d, configuration value %d\n",
__func__, le16_to_cpu(dev->descriptor.idProduct),
dev->descriptor.bNumConfigurations,
dev->actconfig->desc.bConfigurationValue);
@@ -803,7 +803,7 @@
tty_encode_baud_rate(tty, baud, baud);
dev_dbg(&port->dev,
- "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
+ "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
__func__, baud, config->wBaudRate, config->wFlags,
config->bDataBits, config->bParity, config->bStopBits,
config->cXon, config->cXoff, config->bUartMode);
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 7c9dc28..81fc0df 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -868,7 +868,7 @@
max_endpoints = max(max_endpoints, (int)serial->num_ports);
serial->num_port_pointers = max_endpoints;
- dev_dbg(ddev, "setting up %d port structures for this device", max_endpoints);
+ dev_dbg(ddev, "setting up %d port structure(s)\n", max_endpoints);
for (i = 0; i < max_endpoints; ++i) {
port = kzalloc(sizeof(struct usb_serial_port), GFP_KERNEL);
if (!port)
@@ -923,9 +923,8 @@
port = serial->port[i];
if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL))
goto probe_error;
- buffer_size = serial->type->bulk_out_size;
- if (!buffer_size)
- buffer_size = usb_endpoint_maxp(endpoint);
+ buffer_size = max_t(int, serial->type->bulk_out_size,
+ usb_endpoint_maxp(endpoint));
port->bulk_out_size = buffer_size;
port->bulk_out_endpointAddress = endpoint->bEndpointAddress;
@@ -1034,7 +1033,7 @@
for (i = 0; i < num_ports; ++i) {
port = serial->port[i];
dev_set_name(&port->dev, "ttyUSB%d", port->minor);
- dev_dbg(ddev, "registering %s", dev_name(&port->dev));
+ dev_dbg(ddev, "registering %s\n", dev_name(&port->dev));
device_enable_async_suspend(&port->dev);
retval = device_add(&port->dev);
@@ -1161,9 +1160,9 @@
usb_serial_unpoison_port_urbs(serial);
serial->suspending = 0;
- if (serial->type->reset_resume)
+ if (serial->type->reset_resume) {
rv = serial->type->reset_resume(serial);
- else {
+ } else {
rv = -EOPNOTSUPP;
intf->needs_binding = 1;
}
@@ -1338,9 +1337,9 @@
if (retval) {
pr_err("problem %d when registering driver %s\n", retval, driver->description);
list_del(&driver->driver_list);
- } else
+ } else {
pr_info("USB Serial support registered for %s\n", driver->description);
-
+ }
mutex_unlock(&table_lock);
return retval;
}
diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
index 1dd0604..13b5bfb 100644
--- a/drivers/usb/storage/Kconfig
+++ b/drivers/usb/storage/Kconfig
@@ -204,7 +204,7 @@
config USB_UAS
tristate "USB Attached SCSI"
- depends on SCSI && BROKEN
+ depends on SCSI && USB_STORAGE
help
The USB Attached SCSI protocol is supported by some USB
storage devices. It permits higher performance by supporting
diff --git a/drivers/usb/storage/uas-detect.h b/drivers/usb/storage/uas-detect.h
new file mode 100644
index 0000000..bb05b98
--- /dev/null
+++ b/drivers/usb/storage/uas-detect.h
@@ -0,0 +1,96 @@
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include "usb.h"
+
+static int uas_is_interface(struct usb_host_interface *intf)
+{
+ return (intf->desc.bInterfaceClass == USB_CLASS_MASS_STORAGE &&
+ intf->desc.bInterfaceSubClass == USB_SC_SCSI &&
+ intf->desc.bInterfaceProtocol == USB_PR_UAS);
+}
+
+static int uas_isnt_supported(struct usb_device *udev)
+{
+ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+
+ dev_warn(&udev->dev, "The driver for the USB controller %s does not "
+ "support scatter-gather which is\n",
+ hcd->driver->description);
+ dev_warn(&udev->dev, "required by the UAS driver. Please try an"
+ "alternative USB controller if you wish to use UAS.\n");
+ return -ENODEV;
+}
+
+static int uas_find_uas_alt_setting(struct usb_interface *intf)
+{
+ int i;
+ struct usb_device *udev = interface_to_usbdev(intf);
+ int sg_supported = udev->bus->sg_tablesize != 0;
+
+ for (i = 0; i < intf->num_altsetting; i++) {
+ struct usb_host_interface *alt = &intf->altsetting[i];
+
+ if (uas_is_interface(alt)) {
+ if (!sg_supported)
+ return uas_isnt_supported(udev);
+ return alt->desc.bAlternateSetting;
+ }
+ }
+
+ return -ENODEV;
+}
+
+static int uas_find_endpoints(struct usb_host_interface *alt,
+ struct usb_host_endpoint *eps[])
+{
+ struct usb_host_endpoint *endpoint = alt->endpoint;
+ unsigned i, n_endpoints = alt->desc.bNumEndpoints;
+
+ for (i = 0; i < n_endpoints; i++) {
+ unsigned char *extra = endpoint[i].extra;
+ int len = endpoint[i].extralen;
+ while (len >= 3) {
+ if (extra[1] == USB_DT_PIPE_USAGE) {
+ unsigned pipe_id = extra[2];
+ if (pipe_id > 0 && pipe_id < 5)
+ eps[pipe_id - 1] = &endpoint[i];
+ break;
+ }
+ len -= extra[0];
+ extra += extra[0];
+ }
+ }
+
+ if (!eps[0] || !eps[1] || !eps[2] || !eps[3])
+ return -ENODEV;
+
+ return 0;
+}
+
+static int uas_use_uas_driver(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_host_endpoint *eps[4] = { };
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+ unsigned long flags = id->driver_info;
+ int r, alt;
+
+ usb_stor_adjust_quirks(udev, &flags);
+
+ if (flags & US_FL_IGNORE_UAS)
+ return 0;
+
+ if (udev->speed >= USB_SPEED_SUPER && !hcd->can_do_streams)
+ return 0;
+
+ alt = uas_find_uas_alt_setting(intf);
+ if (alt < 0)
+ return 0;
+
+ r = uas_find_endpoints(&intf->altsetting[alt], eps);
+ if (r < 0)
+ return 0;
+
+ return 1;
+}
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index d966b59..a7ac97c 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -2,6 +2,7 @@
* USB Attached SCSI
* Note that this is not the same as the USB Mass Storage driver
*
+ * Copyright Hans de Goede <hdegoede@redhat.com> for Red Hat, Inc. 2013
* Copyright Matthew Wilcox for Intel Corp, 2010
* Copyright Sarah Sharp for Intel Corp, 2010
*
@@ -13,17 +14,21 @@
#include <linux/types.h>
#include <linux/module.h>
#include <linux/usb.h>
+#include <linux/usb_usual.h>
#include <linux/usb/hcd.h>
#include <linux/usb/storage.h>
#include <linux/usb/uas.h>
#include <scsi/scsi.h>
+#include <scsi/scsi_eh.h>
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
+#include "uas-detect.h"
+
/*
* The r00-r01c specs define this version of the SENSE IU data structure.
* It's still in use by several different firmware releases.
@@ -45,12 +50,17 @@
struct usb_anchor sense_urbs;
struct usb_anchor data_urbs;
int qdepth, resetting;
- struct response_ui response;
+ struct response_iu response;
unsigned cmd_pipe, status_pipe, data_in_pipe, data_out_pipe;
unsigned use_streams:1;
unsigned uas_sense_old:1;
+ unsigned running_task:1;
+ unsigned shutdown:1;
struct scsi_cmnd *cmnd;
spinlock_t lock;
+ struct work_struct work;
+ struct list_head inflight_list;
+ struct list_head dead_list;
};
enum {
@@ -85,103 +95,117 @@
struct uas_dev_info *devinfo, gfp_t gfp);
static void uas_do_work(struct work_struct *work);
static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller);
+static void uas_free_streams(struct uas_dev_info *devinfo);
+static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller);
-static DECLARE_WORK(uas_work, uas_do_work);
-static DEFINE_SPINLOCK(uas_work_lock);
-static LIST_HEAD(uas_work_list);
-
+/* Must be called with devinfo->lock held, will temporary unlock the lock */
static void uas_unlink_data_urbs(struct uas_dev_info *devinfo,
- struct uas_cmd_info *cmdinfo)
+ struct uas_cmd_info *cmdinfo,
+ unsigned long *lock_flags)
{
- unsigned long flags;
-
/*
* The UNLINK_DATA_URBS flag makes sure uas_try_complete
* (called by urb completion) doesn't release cmdinfo
* underneath us.
*/
- spin_lock_irqsave(&devinfo->lock, flags);
cmdinfo->state |= UNLINK_DATA_URBS;
- spin_unlock_irqrestore(&devinfo->lock, flags);
+ spin_unlock_irqrestore(&devinfo->lock, *lock_flags);
if (cmdinfo->data_in_urb)
usb_unlink_urb(cmdinfo->data_in_urb);
if (cmdinfo->data_out_urb)
usb_unlink_urb(cmdinfo->data_out_urb);
- spin_lock_irqsave(&devinfo->lock, flags);
+ spin_lock_irqsave(&devinfo->lock, *lock_flags);
cmdinfo->state &= ~UNLINK_DATA_URBS;
- spin_unlock_irqrestore(&devinfo->lock, flags);
}
static void uas_do_work(struct work_struct *work)
{
+ struct uas_dev_info *devinfo =
+ container_of(work, struct uas_dev_info, work);
struct uas_cmd_info *cmdinfo;
- struct uas_cmd_info *temp;
- struct list_head list;
unsigned long flags;
int err;
- spin_lock_irq(&uas_work_lock);
- list_replace_init(&uas_work_list, &list);
- spin_unlock_irq(&uas_work_lock);
-
- list_for_each_entry_safe(cmdinfo, temp, &list, list) {
+ spin_lock_irqsave(&devinfo->lock, flags);
+ list_for_each_entry(cmdinfo, &devinfo->inflight_list, list) {
struct scsi_pointer *scp = (void *)cmdinfo;
- struct scsi_cmnd *cmnd = container_of(scp,
- struct scsi_cmnd, SCp);
- struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata;
- spin_lock_irqsave(&devinfo->lock, flags);
- err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC);
+ struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd,
+ SCp);
+
+ if (!(cmdinfo->state & IS_IN_WORK_LIST))
+ continue;
+
+ err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_NOIO);
if (!err)
cmdinfo->state &= ~IS_IN_WORK_LIST;
- spin_unlock_irqrestore(&devinfo->lock, flags);
- if (err) {
- list_del(&cmdinfo->list);
- spin_lock_irq(&uas_work_lock);
- list_add_tail(&cmdinfo->list, &uas_work_list);
- spin_unlock_irq(&uas_work_lock);
- schedule_work(&uas_work);
- }
+ else
+ schedule_work(&devinfo->work);
}
+ spin_unlock_irqrestore(&devinfo->lock, flags);
}
-static void uas_abort_work(struct uas_dev_info *devinfo)
+static void uas_mark_cmd_dead(struct uas_dev_info *devinfo,
+ struct uas_cmd_info *cmdinfo,
+ int result, const char *caller)
+{
+ struct scsi_pointer *scp = (void *)cmdinfo;
+ struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, SCp);
+
+ uas_log_cmd_state(cmnd, caller);
+ WARN_ON_ONCE(!spin_is_locked(&devinfo->lock));
+ WARN_ON_ONCE(cmdinfo->state & COMMAND_ABORTED);
+ cmdinfo->state |= COMMAND_ABORTED;
+ cmdinfo->state &= ~IS_IN_WORK_LIST;
+ cmnd->result = result << 16;
+ list_move_tail(&cmdinfo->list, &devinfo->dead_list);
+}
+
+static void uas_abort_inflight(struct uas_dev_info *devinfo, int result,
+ const char *caller)
{
struct uas_cmd_info *cmdinfo;
struct uas_cmd_info *temp;
- struct list_head list;
unsigned long flags;
- spin_lock_irq(&uas_work_lock);
- list_replace_init(&uas_work_list, &list);
- spin_unlock_irq(&uas_work_lock);
+ spin_lock_irqsave(&devinfo->lock, flags);
+ list_for_each_entry_safe(cmdinfo, temp, &devinfo->inflight_list, list)
+ uas_mark_cmd_dead(devinfo, cmdinfo, result, caller);
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+}
+
+static void uas_add_work(struct uas_cmd_info *cmdinfo)
+{
+ struct scsi_pointer *scp = (void *)cmdinfo;
+ struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, SCp);
+ struct uas_dev_info *devinfo = cmnd->device->hostdata;
+
+ WARN_ON_ONCE(!spin_is_locked(&devinfo->lock));
+ cmdinfo->state |= IS_IN_WORK_LIST;
+ schedule_work(&devinfo->work);
+}
+
+static void uas_zap_dead(struct uas_dev_info *devinfo)
+{
+ struct uas_cmd_info *cmdinfo;
+ struct uas_cmd_info *temp;
+ unsigned long flags;
spin_lock_irqsave(&devinfo->lock, flags);
- list_for_each_entry_safe(cmdinfo, temp, &list, list) {
+ list_for_each_entry_safe(cmdinfo, temp, &devinfo->dead_list, list) {
struct scsi_pointer *scp = (void *)cmdinfo;
- struct scsi_cmnd *cmnd = container_of(scp,
- struct scsi_cmnd, SCp);
- struct uas_dev_info *di = (void *)cmnd->device->hostdata;
-
- if (di == devinfo) {
- cmdinfo->state |= COMMAND_ABORTED;
- cmdinfo->state &= ~IS_IN_WORK_LIST;
- if (devinfo->resetting) {
- /* uas_stat_cmplt() will not do that
- * when a device reset is in
- * progress */
- cmdinfo->state &= ~COMMAND_INFLIGHT;
- }
- uas_try_complete(cmnd, __func__);
- } else {
- /* not our uas device, relink into list */
- list_del(&cmdinfo->list);
- spin_lock_irq(&uas_work_lock);
- list_add_tail(&cmdinfo->list, &uas_work_list);
- spin_unlock_irq(&uas_work_lock);
- }
+ struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd,
+ SCp);
+ uas_log_cmd_state(cmnd, __func__);
+ WARN_ON_ONCE(!(cmdinfo->state & COMMAND_ABORTED));
+ /* all urbs are killed, clear inflight bits */
+ cmdinfo->state &= ~(COMMAND_INFLIGHT |
+ DATA_IN_URB_INFLIGHT |
+ DATA_OUT_URB_INFLIGHT);
+ uas_try_complete(cmnd, __func__);
}
+ devinfo->running_task = 0;
spin_unlock_irqrestore(&devinfo->lock, flags);
}
@@ -259,20 +283,19 @@
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata;
- WARN_ON(!spin_is_locked(&devinfo->lock));
+ WARN_ON_ONCE(!spin_is_locked(&devinfo->lock));
if (cmdinfo->state & (COMMAND_INFLIGHT |
DATA_IN_URB_INFLIGHT |
DATA_OUT_URB_INFLIGHT |
UNLINK_DATA_URBS))
return -EBUSY;
- BUG_ON(cmdinfo->state & COMMAND_COMPLETED);
+ WARN_ON_ONCE(cmdinfo->state & COMMAND_COMPLETED);
cmdinfo->state |= COMMAND_COMPLETED;
usb_free_urb(cmdinfo->data_in_urb);
usb_free_urb(cmdinfo->data_out_urb);
- if (cmdinfo->state & COMMAND_ABORTED) {
+ if (cmdinfo->state & COMMAND_ABORTED)
scmd_printk(KERN_INFO, cmnd, "abort completed\n");
- cmnd->result = DID_ABORT << 16;
- }
+ list_del(&cmdinfo->list);
cmnd->scsi_done(cmnd);
return 0;
}
@@ -286,11 +309,7 @@
cmdinfo->state |= direction | SUBMIT_STATUS_URB;
err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC);
if (err) {
- spin_lock(&uas_work_lock);
- list_add_tail(&cmdinfo->list, &uas_work_list);
- cmdinfo->state |= IS_IN_WORK_LIST;
- spin_unlock(&uas_work_lock);
- schedule_work(&uas_work);
+ uas_add_work(cmdinfo);
}
}
@@ -298,14 +317,20 @@
{
struct iu *iu = urb->transfer_buffer;
struct Scsi_Host *shost = urb->context;
- struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
struct scsi_cmnd *cmnd;
struct uas_cmd_info *cmdinfo;
unsigned long flags;
u16 tag;
if (urb->status) {
- dev_err(&urb->dev->dev, "URB BAD STATUS %d\n", urb->status);
+ if (urb->status == -ENOENT) {
+ dev_err(&urb->dev->dev, "stat urb: killed, stream %d\n",
+ urb->stream_id);
+ } else {
+ dev_err(&urb->dev->dev, "stat urb: status %d\n",
+ urb->status);
+ }
usb_free_urb(urb);
return;
}
@@ -324,6 +349,9 @@
if (!cmnd) {
if (iu->iu_id == IU_ID_RESPONSE) {
+ if (!devinfo->running_task)
+ dev_warn(&urb->dev->dev,
+ "stat urb: recv unexpected response iu\n");
/* store results for uas_eh_task_mgmt() */
memcpy(&devinfo->response, iu, sizeof(devinfo->response));
}
@@ -346,17 +374,25 @@
uas_sense(urb, cmnd);
if (cmnd->result != 0) {
/* cancel data transfers on error */
- spin_unlock_irqrestore(&devinfo->lock, flags);
- uas_unlink_data_urbs(devinfo, cmdinfo);
- spin_lock_irqsave(&devinfo->lock, flags);
+ uas_unlink_data_urbs(devinfo, cmdinfo, &flags);
}
cmdinfo->state &= ~COMMAND_INFLIGHT;
uas_try_complete(cmnd, __func__);
break;
case IU_ID_READ_READY:
+ if (!cmdinfo->data_in_urb ||
+ (cmdinfo->state & DATA_IN_URB_INFLIGHT)) {
+ scmd_printk(KERN_ERR, cmnd, "unexpected read rdy\n");
+ break;
+ }
uas_xfer_data(urb, cmnd, SUBMIT_DATA_IN_URB);
break;
case IU_ID_WRITE_READY:
+ if (!cmdinfo->data_out_urb ||
+ (cmdinfo->state & DATA_OUT_URB_INFLIGHT)) {
+ scmd_printk(KERN_ERR, cmnd, "unexpected write rdy\n");
+ break;
+ }
uas_xfer_data(urb, cmnd, SUBMIT_DATA_OUT_URB);
break;
default:
@@ -383,8 +419,15 @@
sdb = scsi_out(cmnd);
cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT;
}
- BUG_ON(sdb == NULL);
- if (urb->status) {
+ if (sdb == NULL) {
+ WARN_ON_ONCE(1);
+ } else if (urb->status) {
+ if (urb->status != -ECONNRESET) {
+ uas_log_cmd_state(cmnd, __func__);
+ scmd_printk(KERN_ERR, cmnd,
+ "data cmplt err %d stream %d\n",
+ urb->status, urb->stream_id);
+ }
/* error: no data transfered */
sdb->resid = sdb->length;
} else {
@@ -394,6 +437,17 @@
spin_unlock_irqrestore(&devinfo->lock, flags);
}
+static void uas_cmd_cmplt(struct urb *urb)
+{
+ struct scsi_cmnd *cmnd = urb->context;
+
+ if (urb->status) {
+ uas_log_cmd_state(cmnd, __func__);
+ scmd_printk(KERN_ERR, cmnd, "cmd cmplt err %d\n", urb->status);
+ }
+ usb_free_urb(urb);
+}
+
static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp,
unsigned int pipe, u16 stream_id,
struct scsi_cmnd *cmnd,
@@ -408,8 +462,7 @@
goto out;
usb_fill_bulk_urb(urb, udev, pipe, NULL, sdb->length,
uas_data_cmplt, cmnd);
- if (devinfo->use_streams)
- urb->stream_id = stream_id;
+ urb->stream_id = stream_id;
urb->num_sgs = udev->bus->sg_tablesize ? sdb->table.nents : 0;
urb->sg = sdb->table.sgl;
out:
@@ -442,7 +495,7 @@
}
static struct urb *uas_alloc_cmd_urb(struct uas_dev_info *devinfo, gfp_t gfp,
- struct scsi_cmnd *cmnd, u16 stream_id)
+ struct scsi_cmnd *cmnd)
{
struct usb_device *udev = devinfo->udev;
struct scsi_device *sdev = cmnd->device;
@@ -472,7 +525,7 @@
memcpy(iu->cdb, cmnd->cmnd, cmnd->cmd_len);
usb_fill_bulk_urb(urb, udev, devinfo->cmd_pipe, iu, sizeof(*iu) + len,
- usb_free_urb, NULL);
+ uas_cmd_cmplt, cmnd);
urb->transfer_flags |= URB_FREE_BUFFER;
out:
return urb;
@@ -512,13 +565,17 @@
}
usb_fill_bulk_urb(urb, udev, devinfo->cmd_pipe, iu, sizeof(*iu),
- usb_free_urb, NULL);
+ uas_cmd_cmplt, cmnd);
urb->transfer_flags |= URB_FREE_BUFFER;
- err = usb_submit_urb(urb, gfp);
- if (err)
- goto err;
usb_anchor_urb(urb, &devinfo->cmd_urbs);
+ err = usb_submit_urb(urb, gfp);
+ if (err) {
+ usb_unanchor_urb(urb);
+ uas_log_cmd_state(cmnd, __func__);
+ scmd_printk(KERN_ERR, cmnd, "task submission err %d\n", err);
+ goto err;
+ }
return 0;
@@ -533,38 +590,43 @@
* daft to me.
*/
-static int uas_submit_sense_urb(struct Scsi_Host *shost,
- gfp_t gfp, unsigned int stream)
+static struct urb *uas_submit_sense_urb(struct scsi_cmnd *cmnd,
+ gfp_t gfp, unsigned int stream)
{
- struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
+ struct Scsi_Host *shost = cmnd->device->host;
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
struct urb *urb;
+ int err;
urb = uas_alloc_sense_urb(devinfo, gfp, shost, stream);
if (!urb)
- return SCSI_MLQUEUE_DEVICE_BUSY;
- if (usb_submit_urb(urb, gfp)) {
- shost_printk(KERN_INFO, shost,
- "sense urb submission failure\n");
- usb_free_urb(urb);
- return SCSI_MLQUEUE_DEVICE_BUSY;
- }
+ return NULL;
usb_anchor_urb(urb, &devinfo->sense_urbs);
- return 0;
+ err = usb_submit_urb(urb, gfp);
+ if (err) {
+ usb_unanchor_urb(urb);
+ uas_log_cmd_state(cmnd, __func__);
+ shost_printk(KERN_INFO, shost,
+ "sense urb submission error %d stream %d\n",
+ err, stream);
+ usb_free_urb(urb);
+ return NULL;
+ }
+ return urb;
}
static int uas_submit_urbs(struct scsi_cmnd *cmnd,
struct uas_dev_info *devinfo, gfp_t gfp)
{
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+ struct urb *urb;
int err;
- WARN_ON(!spin_is_locked(&devinfo->lock));
+ WARN_ON_ONCE(!spin_is_locked(&devinfo->lock));
if (cmdinfo->state & SUBMIT_STATUS_URB) {
- err = uas_submit_sense_urb(cmnd->device->host, gfp,
- cmdinfo->stream);
- if (err) {
- return err;
- }
+ urb = uas_submit_sense_urb(cmnd, gfp, cmdinfo->stream);
+ if (!urb)
+ return SCSI_MLQUEUE_DEVICE_BUSY;
cmdinfo->state &= ~SUBMIT_STATUS_URB;
}
@@ -578,14 +640,18 @@
}
if (cmdinfo->state & SUBMIT_DATA_IN_URB) {
- if (usb_submit_urb(cmdinfo->data_in_urb, gfp)) {
+ usb_anchor_urb(cmdinfo->data_in_urb, &devinfo->data_urbs);
+ err = usb_submit_urb(cmdinfo->data_in_urb, gfp);
+ if (err) {
+ usb_unanchor_urb(cmdinfo->data_in_urb);
+ uas_log_cmd_state(cmnd, __func__);
scmd_printk(KERN_INFO, cmnd,
- "data in urb submission failure\n");
+ "data in urb submission error %d stream %d\n",
+ err, cmdinfo->data_in_urb->stream_id);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
cmdinfo->state &= ~SUBMIT_DATA_IN_URB;
cmdinfo->state |= DATA_IN_URB_INFLIGHT;
- usb_anchor_urb(cmdinfo->data_in_urb, &devinfo->data_urbs);
}
if (cmdinfo->state & ALLOC_DATA_OUT_URB) {
@@ -598,33 +664,37 @@
}
if (cmdinfo->state & SUBMIT_DATA_OUT_URB) {
- if (usb_submit_urb(cmdinfo->data_out_urb, gfp)) {
+ usb_anchor_urb(cmdinfo->data_out_urb, &devinfo->data_urbs);
+ err = usb_submit_urb(cmdinfo->data_out_urb, gfp);
+ if (err) {
+ usb_unanchor_urb(cmdinfo->data_out_urb);
+ uas_log_cmd_state(cmnd, __func__);
scmd_printk(KERN_INFO, cmnd,
- "data out urb submission failure\n");
+ "data out urb submission error %d stream %d\n",
+ err, cmdinfo->data_out_urb->stream_id);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
cmdinfo->state &= ~SUBMIT_DATA_OUT_URB;
cmdinfo->state |= DATA_OUT_URB_INFLIGHT;
- usb_anchor_urb(cmdinfo->data_out_urb, &devinfo->data_urbs);
}
if (cmdinfo->state & ALLOC_CMD_URB) {
- cmdinfo->cmd_urb = uas_alloc_cmd_urb(devinfo, gfp, cmnd,
- cmdinfo->stream);
+ cmdinfo->cmd_urb = uas_alloc_cmd_urb(devinfo, gfp, cmnd);
if (!cmdinfo->cmd_urb)
return SCSI_MLQUEUE_DEVICE_BUSY;
cmdinfo->state &= ~ALLOC_CMD_URB;
}
if (cmdinfo->state & SUBMIT_CMD_URB) {
- usb_get_urb(cmdinfo->cmd_urb);
- if (usb_submit_urb(cmdinfo->cmd_urb, gfp)) {
+ usb_anchor_urb(cmdinfo->cmd_urb, &devinfo->cmd_urbs);
+ err = usb_submit_urb(cmdinfo->cmd_urb, gfp);
+ if (err) {
+ usb_unanchor_urb(cmdinfo->cmd_urb);
+ uas_log_cmd_state(cmnd, __func__);
scmd_printk(KERN_INFO, cmnd,
- "cmd urb submission failure\n");
+ "cmd urb submission error %d\n", err);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
- usb_anchor_urb(cmdinfo->cmd_urb, &devinfo->cmd_urbs);
- usb_put_urb(cmdinfo->cmd_urb);
cmdinfo->cmd_urb = NULL;
cmdinfo->state &= ~SUBMIT_CMD_URB;
cmdinfo->state |= COMMAND_INFLIGHT;
@@ -644,18 +714,22 @@
BUILD_BUG_ON(sizeof(struct uas_cmd_info) > sizeof(struct scsi_pointer));
+ spin_lock_irqsave(&devinfo->lock, flags);
+
if (devinfo->resetting) {
cmnd->result = DID_ERROR << 16;
cmnd->scsi_done(cmnd);
+ spin_unlock_irqrestore(&devinfo->lock, flags);
return 0;
}
- spin_lock_irqsave(&devinfo->lock, flags);
if (devinfo->cmnd) {
spin_unlock_irqrestore(&devinfo->lock, flags);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
+ memset(cmdinfo, 0, sizeof(*cmdinfo));
+
if (blk_rq_tagged(cmnd->request)) {
cmdinfo->stream = cmnd->request->tag + 2;
} else {
@@ -692,13 +766,10 @@
spin_unlock_irqrestore(&devinfo->lock, flags);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
- spin_lock(&uas_work_lock);
- list_add_tail(&cmdinfo->list, &uas_work_list);
- cmdinfo->state |= IS_IN_WORK_LIST;
- spin_unlock(&uas_work_lock);
- schedule_work(&uas_work);
+ uas_add_work(cmdinfo);
}
+ list_add_tail(&cmdinfo->list, &devinfo->inflight_list);
spin_unlock_irqrestore(&devinfo->lock, flags);
return 0;
}
@@ -709,46 +780,78 @@
const char *fname, u8 function)
{
struct Scsi_Host *shost = cmnd->device->host;
- struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
- u16 tag = devinfo->qdepth - 1;
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
+ u16 tag = devinfo->qdepth;
unsigned long flags;
+ struct urb *sense_urb;
+ int result = SUCCESS;
spin_lock_irqsave(&devinfo->lock, flags);
- memset(&devinfo->response, 0, sizeof(devinfo->response));
- if (uas_submit_sense_urb(shost, GFP_ATOMIC, tag)) {
+
+ if (devinfo->resetting) {
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+ return FAILED;
+ }
+
+ if (devinfo->running_task) {
shost_printk(KERN_INFO, shost,
- "%s: %s: submit sense urb failed\n",
+ "%s: %s: error already running a task\n",
__func__, fname);
spin_unlock_irqrestore(&devinfo->lock, flags);
return FAILED;
}
- if (uas_submit_task_urb(cmnd, GFP_ATOMIC, function, tag)) {
+
+ devinfo->running_task = 1;
+ memset(&devinfo->response, 0, sizeof(devinfo->response));
+ sense_urb = uas_submit_sense_urb(cmnd, GFP_NOIO,
+ devinfo->use_streams ? tag : 0);
+ if (!sense_urb) {
+ shost_printk(KERN_INFO, shost,
+ "%s: %s: submit sense urb failed\n",
+ __func__, fname);
+ devinfo->running_task = 0;
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+ return FAILED;
+ }
+ if (uas_submit_task_urb(cmnd, GFP_NOIO, function, tag)) {
shost_printk(KERN_INFO, shost,
"%s: %s: submit task mgmt urb failed\n",
__func__, fname);
+ devinfo->running_task = 0;
spin_unlock_irqrestore(&devinfo->lock, flags);
+ usb_kill_urb(sense_urb);
return FAILED;
}
spin_unlock_irqrestore(&devinfo->lock, flags);
if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 3000) == 0) {
+ /*
+ * Note we deliberately do not clear running_task here. If we
+ * allow new tasks to be submitted, there is no way to figure
+ * out if a received response_iu is for the failed task or for
+ * the new one. A bus-reset will eventually clear running_task.
+ */
shost_printk(KERN_INFO, shost,
"%s: %s timed out\n", __func__, fname);
return FAILED;
}
+
+ spin_lock_irqsave(&devinfo->lock, flags);
+ devinfo->running_task = 0;
if (be16_to_cpu(devinfo->response.tag) != tag) {
shost_printk(KERN_INFO, shost,
"%s: %s failed (wrong tag %d/%d)\n", __func__,
fname, be16_to_cpu(devinfo->response.tag), tag);
- return FAILED;
- }
- if (devinfo->response.response_code != RC_TMF_COMPLETE) {
+ result = FAILED;
+ } else if (devinfo->response.response_code != RC_TMF_COMPLETE) {
shost_printk(KERN_INFO, shost,
"%s: %s failed (rc 0x%x)\n", __func__,
fname, devinfo->response.response_code);
- return FAILED;
+ result = FAILED;
}
- return SUCCESS;
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+
+ return result;
}
static int uas_eh_abort_handler(struct scsi_cmnd *cmnd)
@@ -758,22 +861,19 @@
unsigned long flags;
int ret;
- uas_log_cmd_state(cmnd, __func__);
spin_lock_irqsave(&devinfo->lock, flags);
- cmdinfo->state |= COMMAND_ABORTED;
- if (cmdinfo->state & IS_IN_WORK_LIST) {
- spin_lock(&uas_work_lock);
- list_del(&cmdinfo->list);
- cmdinfo->state &= ~IS_IN_WORK_LIST;
- spin_unlock(&uas_work_lock);
+
+ if (devinfo->resetting) {
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+ return FAILED;
}
+
+ uas_mark_cmd_dead(devinfo, cmdinfo, DID_ABORT, __func__);
if (cmdinfo->state & COMMAND_INFLIGHT) {
spin_unlock_irqrestore(&devinfo->lock, flags);
ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK);
} else {
- spin_unlock_irqrestore(&devinfo->lock, flags);
- uas_unlink_data_urbs(devinfo, cmdinfo);
- spin_lock_irqsave(&devinfo->lock, flags);
+ uas_unlink_data_urbs(devinfo, cmdinfo, &flags);
uas_try_complete(cmnd, __func__);
spin_unlock_irqrestore(&devinfo->lock, flags);
ret = SUCCESS;
@@ -795,14 +895,25 @@
struct usb_device *udev = devinfo->udev;
int err;
+ err = usb_lock_device_for_reset(udev, devinfo->intf);
+ if (err) {
+ shost_printk(KERN_ERR, sdev->host,
+ "%s FAILED to get lock err %d\n", __func__, err);
+ return FAILED;
+ }
+
+ shost_printk(KERN_INFO, sdev->host, "%s start\n", __func__);
devinfo->resetting = 1;
- uas_abort_work(devinfo);
+ uas_abort_inflight(devinfo, DID_RESET, __func__);
usb_kill_anchored_urbs(&devinfo->cmd_urbs);
usb_kill_anchored_urbs(&devinfo->sense_urbs);
usb_kill_anchored_urbs(&devinfo->data_urbs);
+ uas_zap_dead(devinfo);
err = usb_reset_device(udev);
devinfo->resetting = 0;
+ usb_unlock_device(udev);
+
if (err) {
shost_printk(KERN_INFO, sdev->host, "%s FAILED\n", __func__);
return FAILED;
@@ -814,7 +925,25 @@
static int uas_slave_alloc(struct scsi_device *sdev)
{
- sdev->hostdata = (void *)sdev->host->hostdata[0];
+ sdev->hostdata = (void *)sdev->host->hostdata;
+
+ /* USB has unusual DMA-alignment requirements: Although the
+ * starting address of each scatter-gather element doesn't matter,
+ * the length of each element except the last must be divisible
+ * by the Bulk maxpacket value. There's currently no way to
+ * express this by block-layer constraints, so we'll cop out
+ * and simply require addresses to be aligned at 512-byte
+ * boundaries. This is okay since most block I/O involves
+ * hardware sectors that are multiples of 512 bytes in length,
+ * and since host controllers up through USB 2.0 have maxpacket
+ * values no larger than 512.
+ *
+ * But it doesn't suffice for Wireless USB, where Bulk maxpacket
+ * values can be as large as 2048. To make that work properly
+ * will require changes to the block layer.
+ */
+ blk_queue_update_dma_alignment(sdev->request_queue, (512 - 1));
+
return 0;
}
@@ -822,7 +951,7 @@
{
struct uas_dev_info *devinfo = sdev->hostdata;
scsi_set_tag_type(sdev, MSG_ORDERED_TAG);
- scsi_activate_tcq(sdev, devinfo->qdepth - 3);
+ scsi_activate_tcq(sdev, devinfo->qdepth - 2);
return 0;
}
@@ -843,7 +972,14 @@
.ordered_tag = 1,
};
+#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
+ vendorName, productName, useProtocol, useTransport, \
+ initFunction, flags) \
+{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
+ .driver_info = (flags) }
+
static struct usb_device_id uas_usb_ids[] = {
+# include "unusual_uas.h"
{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_BULK) },
{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_UAS) },
/* 0xaa is a prototype device I happen to have access to */
@@ -852,105 +988,55 @@
};
MODULE_DEVICE_TABLE(usb, uas_usb_ids);
-static int uas_is_interface(struct usb_host_interface *intf)
-{
- return (intf->desc.bInterfaceClass == USB_CLASS_MASS_STORAGE &&
- intf->desc.bInterfaceSubClass == USB_SC_SCSI &&
- intf->desc.bInterfaceProtocol == USB_PR_UAS);
-}
-
-static int uas_isnt_supported(struct usb_device *udev)
-{
- struct usb_hcd *hcd = bus_to_hcd(udev->bus);
-
- dev_warn(&udev->dev, "The driver for the USB controller %s does not "
- "support scatter-gather which is\n",
- hcd->driver->description);
- dev_warn(&udev->dev, "required by the UAS driver. Please try an"
- "alternative USB controller if you wish to use UAS.\n");
- return -ENODEV;
-}
+#undef UNUSUAL_DEV
static int uas_switch_interface(struct usb_device *udev,
- struct usb_interface *intf)
+ struct usb_interface *intf)
{
- int i;
- int sg_supported = udev->bus->sg_tablesize != 0;
+ int alt;
- for (i = 0; i < intf->num_altsetting; i++) {
- struct usb_host_interface *alt = &intf->altsetting[i];
+ alt = uas_find_uas_alt_setting(intf);
+ if (alt < 0)
+ return alt;
- if (uas_is_interface(alt)) {
- if (!sg_supported)
- return uas_isnt_supported(udev);
- return usb_set_interface(udev,
- alt->desc.bInterfaceNumber,
- alt->desc.bAlternateSetting);
- }
- }
-
- return -ENODEV;
+ return usb_set_interface(udev,
+ intf->altsetting[0].desc.bInterfaceNumber, alt);
}
-static void uas_configure_endpoints(struct uas_dev_info *devinfo)
+static int uas_configure_endpoints(struct uas_dev_info *devinfo)
{
struct usb_host_endpoint *eps[4] = { };
- struct usb_interface *intf = devinfo->intf;
struct usb_device *udev = devinfo->udev;
- struct usb_host_endpoint *endpoint = intf->cur_altsetting->endpoint;
- unsigned i, n_endpoints = intf->cur_altsetting->desc.bNumEndpoints;
+ int r;
devinfo->uas_sense_old = 0;
devinfo->cmnd = NULL;
- for (i = 0; i < n_endpoints; i++) {
- unsigned char *extra = endpoint[i].extra;
- int len = endpoint[i].extralen;
- while (len > 1) {
- if (extra[1] == USB_DT_PIPE_USAGE) {
- unsigned pipe_id = extra[2];
- if (pipe_id > 0 && pipe_id < 5)
- eps[pipe_id - 1] = &endpoint[i];
- break;
- }
- len -= extra[0];
- extra += extra[0];
- }
- }
+ r = uas_find_endpoints(devinfo->intf->cur_altsetting, eps);
+ if (r)
+ return r;
- /*
- * Assume that if we didn't find a control pipe descriptor, we're
- * using a device with old firmware that happens to be set up like
- * this.
- */
- if (!eps[0]) {
- devinfo->cmd_pipe = usb_sndbulkpipe(udev, 1);
- devinfo->status_pipe = usb_rcvbulkpipe(udev, 1);
- devinfo->data_in_pipe = usb_rcvbulkpipe(udev, 2);
- devinfo->data_out_pipe = usb_sndbulkpipe(udev, 2);
+ devinfo->cmd_pipe = usb_sndbulkpipe(udev,
+ usb_endpoint_num(&eps[0]->desc));
+ devinfo->status_pipe = usb_rcvbulkpipe(udev,
+ usb_endpoint_num(&eps[1]->desc));
+ devinfo->data_in_pipe = usb_rcvbulkpipe(udev,
+ usb_endpoint_num(&eps[2]->desc));
+ devinfo->data_out_pipe = usb_sndbulkpipe(udev,
+ usb_endpoint_num(&eps[3]->desc));
- eps[1] = usb_pipe_endpoint(udev, devinfo->status_pipe);
- eps[2] = usb_pipe_endpoint(udev, devinfo->data_in_pipe);
- eps[3] = usb_pipe_endpoint(udev, devinfo->data_out_pipe);
- } else {
- devinfo->cmd_pipe = usb_sndbulkpipe(udev,
- eps[0]->desc.bEndpointAddress);
- devinfo->status_pipe = usb_rcvbulkpipe(udev,
- eps[1]->desc.bEndpointAddress);
- devinfo->data_in_pipe = usb_rcvbulkpipe(udev,
- eps[2]->desc.bEndpointAddress);
- devinfo->data_out_pipe = usb_sndbulkpipe(udev,
- eps[3]->desc.bEndpointAddress);
- }
-
- devinfo->qdepth = usb_alloc_streams(devinfo->intf, eps + 1, 3, 256,
- GFP_KERNEL);
- if (devinfo->qdepth < 0) {
+ if (udev->speed != USB_SPEED_SUPER) {
devinfo->qdepth = 256;
devinfo->use_streams = 0;
} else {
+ devinfo->qdepth = usb_alloc_streams(devinfo->intf, eps + 1,
+ 3, 256, GFP_KERNEL);
+ if (devinfo->qdepth < 0)
+ return devinfo->qdepth;
devinfo->use_streams = 1;
}
+
+ return 0;
}
static void uas_free_streams(struct uas_dev_info *devinfo)
@@ -964,30 +1050,23 @@
usb_free_streams(devinfo->intf, eps, 3, GFP_KERNEL);
}
-/*
- * XXX: What I'd like to do here is register a SCSI host for each USB host in
- * the system. Follow usb-storage's design of registering a SCSI host for
- * each USB device for the moment. Can implement this by walking up the
- * USB hierarchy until we find a USB host.
- */
static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
- int result;
- struct Scsi_Host *shost;
+ int result = -ENOMEM;
+ struct Scsi_Host *shost = NULL;
struct uas_dev_info *devinfo;
struct usb_device *udev = interface_to_usbdev(intf);
+ if (!uas_use_uas_driver(intf, id))
+ return -ENODEV;
+
if (uas_switch_interface(udev, intf))
return -ENODEV;
- devinfo = kmalloc(sizeof(struct uas_dev_info), GFP_KERNEL);
- if (!devinfo)
- return -ENOMEM;
-
- result = -ENOMEM;
- shost = scsi_host_alloc(&uas_host_template, sizeof(void *));
+ shost = scsi_host_alloc(&uas_host_template,
+ sizeof(struct uas_dev_info));
if (!shost)
- goto free;
+ goto set_alt0;
shost->max_cmd_len = 16 + 252;
shost->max_id = 1;
@@ -995,33 +1074,40 @@
shost->max_channel = 0;
shost->sg_tablesize = udev->bus->sg_tablesize;
+ devinfo = (struct uas_dev_info *)shost->hostdata;
devinfo->intf = intf;
devinfo->udev = udev;
devinfo->resetting = 0;
+ devinfo->running_task = 0;
+ devinfo->shutdown = 0;
init_usb_anchor(&devinfo->cmd_urbs);
init_usb_anchor(&devinfo->sense_urbs);
init_usb_anchor(&devinfo->data_urbs);
spin_lock_init(&devinfo->lock);
- uas_configure_endpoints(devinfo);
+ INIT_WORK(&devinfo->work, uas_do_work);
+ INIT_LIST_HEAD(&devinfo->inflight_list);
+ INIT_LIST_HEAD(&devinfo->dead_list);
- result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 3);
+ result = uas_configure_endpoints(devinfo);
if (result)
- goto free;
+ goto set_alt0;
+
+ result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 2);
+ if (result)
+ goto free_streams;
result = scsi_add_host(shost, &intf->dev);
if (result)
- goto deconfig_eps;
-
- shost->hostdata[0] = (unsigned long)devinfo;
+ goto free_streams;
scsi_scan_host(shost);
usb_set_intfdata(intf, shost);
return result;
-deconfig_eps:
+free_streams:
uas_free_streams(devinfo);
- free:
- kfree(devinfo);
+set_alt0:
+ usb_set_interface(udev, intf->altsetting[0].desc.bInterfaceNumber, 0);
if (shost)
scsi_host_put(shost);
return result;
@@ -1029,45 +1115,146 @@
static int uas_pre_reset(struct usb_interface *intf)
{
-/* XXX: Need to return 1 if it's not our device in error handling */
+ struct Scsi_Host *shost = usb_get_intfdata(intf);
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
+ unsigned long flags;
+
+ if (devinfo->shutdown)
+ return 0;
+
+ /* Block new requests */
+ spin_lock_irqsave(shost->host_lock, flags);
+ scsi_block_requests(shost);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ /* Wait for any pending requests to complete */
+ flush_work(&devinfo->work);
+ if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000) == 0) {
+ shost_printk(KERN_ERR, shost, "%s: timed out\n", __func__);
+ return 1;
+ }
+
+ uas_free_streams(devinfo);
+
return 0;
}
static int uas_post_reset(struct usb_interface *intf)
{
-/* XXX: Need to return 1 if it's not our device in error handling */
+ struct Scsi_Host *shost = usb_get_intfdata(intf);
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
+ unsigned long flags;
+
+ if (devinfo->shutdown)
+ return 0;
+
+ if (uas_configure_endpoints(devinfo) != 0) {
+ shost_printk(KERN_ERR, shost,
+ "%s: alloc streams error after reset", __func__);
+ return 1;
+ }
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ scsi_report_bus_reset(shost, 0);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ scsi_unblock_requests(shost);
+
+ return 0;
+}
+
+static int uas_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct Scsi_Host *shost = usb_get_intfdata(intf);
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
+
+ /* Wait for any pending requests to complete */
+ flush_work(&devinfo->work);
+ if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000) == 0) {
+ shost_printk(KERN_ERR, shost, "%s: timed out\n", __func__);
+ return -ETIME;
+ }
+
+ return 0;
+}
+
+static int uas_resume(struct usb_interface *intf)
+{
+ return 0;
+}
+
+static int uas_reset_resume(struct usb_interface *intf)
+{
+ struct Scsi_Host *shost = usb_get_intfdata(intf);
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
+ unsigned long flags;
+
+ if (uas_configure_endpoints(devinfo) != 0) {
+ shost_printk(KERN_ERR, shost,
+ "%s: alloc streams error after reset", __func__);
+ return -EIO;
+ }
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ scsi_report_bus_reset(shost, 0);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
return 0;
}
static void uas_disconnect(struct usb_interface *intf)
{
struct Scsi_Host *shost = usb_get_intfdata(intf);
- struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
devinfo->resetting = 1;
- uas_abort_work(devinfo);
+ cancel_work_sync(&devinfo->work);
+ uas_abort_inflight(devinfo, DID_NO_CONNECT, __func__);
usb_kill_anchored_urbs(&devinfo->cmd_urbs);
usb_kill_anchored_urbs(&devinfo->sense_urbs);
usb_kill_anchored_urbs(&devinfo->data_urbs);
+ uas_zap_dead(devinfo);
scsi_remove_host(shost);
uas_free_streams(devinfo);
- kfree(devinfo);
+ scsi_host_put(shost);
}
/*
- * XXX: Should this plug into libusual so we can auto-upgrade devices from
- * Bulk-Only to UAS?
+ * Put the device back in usb-storage mode on shutdown, as some BIOS-es
+ * hang on reboot when the device is still in uas mode. Note the reset is
+ * necessary as some devices won't revert to usb-storage mode without it.
*/
+static void uas_shutdown(struct device *dev)
+{
+ struct usb_interface *intf = to_usb_interface(dev);
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct Scsi_Host *shost = usb_get_intfdata(intf);
+ struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
+
+ if (system_state != SYSTEM_RESTART)
+ return;
+
+ devinfo->shutdown = 1;
+ uas_free_streams(devinfo);
+ usb_set_interface(udev, intf->altsetting[0].desc.bInterfaceNumber, 0);
+ usb_reset_device(udev);
+}
+
static struct usb_driver uas_driver = {
.name = "uas",
.probe = uas_probe,
.disconnect = uas_disconnect,
.pre_reset = uas_pre_reset,
.post_reset = uas_post_reset,
+ .suspend = uas_suspend,
+ .resume = uas_resume,
+ .reset_resume = uas_reset_resume,
+ .drvwrap.driver.shutdown = uas_shutdown,
.id_table = uas_usb_ids,
};
module_usb_driver(uas_driver);
MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Matthew Wilcox and Sarah Sharp");
+MODULE_AUTHOR(
+ "Hans de Goede <hdegoede@redhat.com>, Matthew Wilcox and Sarah Sharp");
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index adbeb25..f4a82291 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2086,6 +2086,11 @@
"Digital MP3 Audio Player",
USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NOT_LOCKABLE ),
+/* Unusual uas devices */
+#if IS_ENABLED(CONFIG_USB_UAS)
+#include "unusual_uas.h"
+#endif
+
/* Control/Bulk transport for all SubClass values */
USUAL_DEV(USB_SC_RBC, USB_PR_CB),
USUAL_DEV(USB_SC_8020, USB_PR_CB),
diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
new file mode 100644
index 0000000..7244444
--- /dev/null
+++ b/drivers/usb/storage/unusual_uas.h
@@ -0,0 +1,52 @@
+/* Driver for USB Attached SCSI devices - Unusual Devices File
+ *
+ * (c) 2013 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Based on the same file for the usb-storage driver, which is:
+ * (c) 2000-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
+ * (c) 2000 Adam J. Richter (adam@yggdrasil.com), Yggdrasil Computing, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * IMPORTANT NOTE: This file must be included in another file which defines
+ * a UNUSUAL_DEV macro before this file is included.
+ */
+
+/*
+ * If you edit this file, please try to keep it sorted first by VendorID,
+ * then by ProductID.
+ *
+ * If you want to add an entry for this file, be sure to include the
+ * following information:
+ * - a patch that adds the entry for your device, including your
+ * email address right above the entry (plus maybe a brief
+ * explanation of the reason for the entry),
+ * - lsusb -v output for the device
+ * Send your submission to Hans de Goede <hdegoede@redhat.com>
+ * and don't forget to CC: the USB development list <linux-usb@vger.kernel.org>
+ */
+
+/*
+ * This is an example entry for the US_FL_IGNORE_UAS flag. Once we have an
+ * actual entry using US_FL_IGNORE_UAS this entry should be removed.
+ *
+ * UNUSUAL_DEV( 0xabcd, 0x1234, 0x0100, 0x0100,
+ * "Example",
+ * "Storage with broken UAS",
+ * USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ * US_FL_IGNORE_UAS),
+ */
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 1c0b89f2..f1c9626 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -72,6 +72,10 @@
#include "sierra_ms.h"
#include "option_ms.h"
+#if IS_ENABLED(CONFIG_USB_UAS)
+#include "uas-detect.h"
+#endif
+
/* Some informational data */
MODULE_AUTHOR("Matthew Dharm <mdharm-usb@one-eyed-alien.net>");
MODULE_DESCRIPTION("USB Mass Storage driver for Linux");
@@ -459,14 +463,14 @@
#define TOLOWER(x) ((x) | 0x20)
/* Adjust device flags based on the "quirks=" module parameter */
-static void adjust_quirks(struct us_data *us)
+void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags)
{
char *p;
- u16 vid = le16_to_cpu(us->pusb_dev->descriptor.idVendor);
- u16 pid = le16_to_cpu(us->pusb_dev->descriptor.idProduct);
+ u16 vid = le16_to_cpu(udev->descriptor.idVendor);
+ u16 pid = le16_to_cpu(udev->descriptor.idProduct);
unsigned f = 0;
unsigned int mask = (US_FL_SANE_SENSE | US_FL_BAD_SENSE |
- US_FL_FIX_CAPACITY |
+ US_FL_FIX_CAPACITY | US_FL_IGNORE_UAS |
US_FL_CAPACITY_HEURISTICS | US_FL_IGNORE_DEVICE |
US_FL_NOT_LOCKABLE | US_FL_MAX_SECTORS_64 |
US_FL_CAPACITY_OK | US_FL_IGNORE_RESIDUE |
@@ -537,14 +541,18 @@
case 's':
f |= US_FL_SINGLE_LUN;
break;
+ case 'u':
+ f |= US_FL_IGNORE_UAS;
+ break;
case 'w':
f |= US_FL_NO_WP_DETECT;
break;
/* Ignore unrecognized flag characters */
}
}
- us->fflags = (us->fflags & ~mask) | f;
+ *fflags = (*fflags & ~mask) | f;
}
+EXPORT_SYMBOL_GPL(usb_stor_adjust_quirks);
/* Get the unusual_devs entries and the string descriptors */
static int get_device_info(struct us_data *us, const struct usb_device_id *id,
@@ -564,7 +572,7 @@
idesc->bInterfaceProtocol :
unusual_dev->useTransport;
us->fflags = id->driver_info;
- adjust_quirks(us);
+ usb_stor_adjust_quirks(us->pusb_dev, &us->fflags);
if (us->fflags & US_FL_IGNORE_DEVICE) {
dev_info(pdev, "device ignored\n");
@@ -1035,6 +1043,12 @@
int result;
int size;
+ /* If uas is enabled and this device can do uas then ignore it. */
+#if IS_ENABLED(CONFIG_USB_UAS)
+ if (uas_use_uas_driver(intf, id))
+ return -ENXIO;
+#endif
+
/*
* If the device isn't standard (is handled by a subdriver
* module) then don't accept it.
diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
index 75f70f0..307e339 100644
--- a/drivers/usb/storage/usb.h
+++ b/drivers/usb/storage/usb.h
@@ -201,4 +201,7 @@
extern int usb_stor_probe2(struct us_data *us);
extern void usb_stor_disconnect(struct usb_interface *intf);
+extern void usb_stor_adjust_quirks(struct usb_device *dev,
+ unsigned long *fflags);
+
#endif
diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c
index 3b959e8..0677139 100644
--- a/drivers/usb/wusbcore/devconnect.c
+++ b/drivers/usb/wusbcore/devconnect.c
@@ -284,7 +284,7 @@
struct device *dev = wusbhc->dev;
struct wusb_dev *wusb_dev;
struct wusb_port *port;
- unsigned idx, devnum;
+ unsigned idx;
mutex_lock(&wusbhc->mutex);
@@ -312,8 +312,6 @@
goto error_unlock;
}
- devnum = idx + 2;
-
/* Make sure we are using no crypto on that "virtual port" */
wusbhc->set_ptk(wusbhc, idx, 0, NULL, 0);
diff --git a/drivers/usb/wusbcore/wa-hc.c b/drivers/usb/wusbcore/wa-hc.c
index 368360f..252c7bd 100644
--- a/drivers/usb/wusbcore/wa-hc.c
+++ b/drivers/usb/wusbcore/wa-hc.c
@@ -75,8 +75,6 @@
if (wa->dti_urb) {
usb_kill_urb(wa->dti_urb);
usb_put_urb(wa->dti_urb);
- usb_kill_urb(wa->buf_in_urb);
- usb_put_urb(wa->buf_in_urb);
}
kfree(wa->dti_buf);
wa_nep_destroy(wa);
diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h
index a2ef84b..f2a8d29 100644
--- a/drivers/usb/wusbcore/wa-hc.h
+++ b/drivers/usb/wusbcore/wa-hc.h
@@ -125,7 +125,8 @@
enum wa_dti_state {
WA_DTI_TRANSFER_RESULT_PENDING,
- WA_DTI_ISOC_PACKET_STATUS_PENDING
+ WA_DTI_ISOC_PACKET_STATUS_PENDING,
+ WA_DTI_BUF_IN_DATA_PENDING
};
enum wa_quirks {
@@ -134,8 +135,20 @@
* requests to be concatenated and not sent as separate packets.
*/
WUSB_QUIRK_ALEREON_HWA_CONCAT_ISOC = 0x01,
+ /*
+ * The Alereon HWA can be instructed to not send transfer notifications
+ * as an optimization.
+ */
+ WUSB_QUIRK_ALEREON_HWA_DISABLE_XFER_NOTIFICATIONS = 0x02,
};
+enum wa_vendor_specific_requests {
+ WA_REQ_ALEREON_DISABLE_XFER_NOTIFICATIONS = 0x4C,
+ WA_REQ_ALEREON_FEATURE_SET = 0x01,
+ WA_REQ_ALEREON_FEATURE_CLEAR = 0x00,
+};
+
+#define WA_MAX_BUF_IN_URBS 4
/**
* Instance of a HWA Host Controller
*
@@ -206,7 +219,9 @@
u32 dti_isoc_xfer_in_progress;
u8 dti_isoc_xfer_seg;
struct urb *dti_urb; /* URB for reading xfer results */
- struct urb *buf_in_urb; /* URB for reading data in */
+ /* URBs for reading data in */
+ struct urb buf_in_urbs[WA_MAX_BUF_IN_URBS];
+ int active_buf_in_urbs; /* number of buf_in_urbs active. */
struct edc dti_edc; /* DTI error density counter */
void *dti_buf;
size_t dti_buf_size;
@@ -234,6 +249,7 @@
extern int wa_create(struct wahc *wa, struct usb_interface *iface,
kernel_ulong_t);
extern void __wa_destroy(struct wahc *wa);
+extern int wa_dti_start(struct wahc *wa);
void wa_reset_all(struct wahc *wa);
@@ -275,6 +291,8 @@
static inline void wa_init(struct wahc *wa)
{
+ int index;
+
edc_init(&wa->nep_edc);
atomic_set(&wa->notifs_queued, 0);
wa->dti_state = WA_DTI_TRANSFER_RESULT_PENDING;
@@ -288,6 +306,10 @@
INIT_WORK(&wa->xfer_error_work, wa_process_errored_transfers_run);
wa->dto_in_use = 0;
atomic_set(&wa->xfer_id_count, 1);
+ /* init the buf in URBs */
+ for (index = 0; index < WA_MAX_BUF_IN_URBS; ++index)
+ usb_init_urb(&(wa->buf_in_urbs[index]));
+ wa->active_buf_in_urbs = 0;
}
/**
diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c
index 6ca80a4..6d6da12 100644
--- a/drivers/usb/wusbcore/wa-rpipe.c
+++ b/drivers/usb/wusbcore/wa-rpipe.c
@@ -298,7 +298,7 @@
break;
}
itr += hdr->bLength;
- itr_size -= hdr->bDescriptorType;
+ itr_size -= hdr->bLength;
}
out:
return epcd;
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
index 3cd96e9..c8e2a47 100644
--- a/drivers/usb/wusbcore/wa-xfer.c
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -167,6 +167,8 @@
static void __wa_populate_dto_urb_isoc(struct wa_xfer *xfer,
struct wa_seg *seg, int curr_iso_frame);
+static void wa_complete_remaining_xfer_segs(struct wa_xfer *xfer,
+ int starting_index, enum wa_seg_status status);
static inline void wa_xfer_init(struct wa_xfer *xfer)
{
@@ -367,13 +369,13 @@
break;
case WA_SEG_ERROR:
xfer->result = seg->result;
- dev_dbg(dev, "xfer %p ID %08X#%u: ERROR result %zu(0x%08zX)\n",
+ dev_dbg(dev, "xfer %p ID %08X#%u: ERROR result %zi(0x%08zX)\n",
xfer, wa_xfer_id(xfer), seg->index, seg->result,
seg->result);
goto out;
case WA_SEG_ABORTED:
xfer->result = seg->result;
- dev_dbg(dev, "xfer %p ID %08X#%u: ABORTED result %zu(0x%08zX)\n",
+ dev_dbg(dev, "xfer %p ID %08X#%u: ABORTED result %zi(0x%08zX)\n",
xfer, wa_xfer_id(xfer), seg->index, seg->result,
seg->result);
goto out;
@@ -390,6 +392,24 @@
}
/*
+ * Mark the given segment as done. Return true if this completes the xfer.
+ * This should only be called for segs that have been submitted to an RPIPE.
+ * Delayed segs are not marked as submitted so they do not need to be marked
+ * as done when cleaning up.
+ *
+ * xfer->lock has to be locked
+ */
+static unsigned __wa_xfer_mark_seg_as_done(struct wa_xfer *xfer,
+ struct wa_seg *seg, enum wa_seg_status status)
+{
+ seg->status = status;
+ xfer->segs_done++;
+
+ /* check for done. */
+ return __wa_xfer_is_done(xfer);
+}
+
+/*
* Search for a transfer list ID on the HCD's URB list
*
* For 32 bit architectures, we use the pointer itself; for 64 bits, a
@@ -416,12 +436,51 @@
struct wa_xfer_abort_buffer {
struct urb urb;
+ struct wahc *wa;
struct wa_xfer_abort cmd;
};
static void __wa_xfer_abort_cb(struct urb *urb)
{
struct wa_xfer_abort_buffer *b = urb->context;
+ struct wahc *wa = b->wa;
+
+ /*
+ * If the abort request URB failed, then the HWA did not get the abort
+ * command. Forcibly clean up the xfer without waiting for a Transfer
+ * Result from the HWA.
+ */
+ if (urb->status < 0) {
+ struct wa_xfer *xfer;
+ struct device *dev = &wa->usb_iface->dev;
+
+ xfer = wa_xfer_get_by_id(wa, le32_to_cpu(b->cmd.dwTransferID));
+ dev_err(dev, "%s: Transfer Abort request failed. result: %d\n",
+ __func__, urb->status);
+ if (xfer) {
+ unsigned long flags;
+ int done;
+ struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+
+ dev_err(dev, "%s: cleaning up xfer %p ID 0x%08X.\n",
+ __func__, xfer, wa_xfer_id(xfer));
+ spin_lock_irqsave(&xfer->lock, flags);
+ /* mark all segs as aborted. */
+ wa_complete_remaining_xfer_segs(xfer, 0,
+ WA_SEG_ABORTED);
+ done = __wa_xfer_is_done(xfer);
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ wa_xfer_delayed_run(rpipe);
+ wa_xfer_put(xfer);
+ } else {
+ dev_err(dev, "%s: xfer ID 0x%08X already gone.\n",
+ __func__, le32_to_cpu(b->cmd.dwTransferID));
+ }
+ }
+
+ wa_put(wa); /* taken in __wa_xfer_abort */
usb_put_urb(&b->urb);
}
@@ -449,6 +508,7 @@
b->cmd.bRequestType = WA_XFER_ABORT;
b->cmd.wRPipe = rpipe->descr.wRPipeIndex;
b->cmd.dwTransferID = wa_xfer_id_le32(xfer);
+ b->wa = wa_get(xfer->wa);
usb_init_urb(&b->urb);
usb_fill_bulk_urb(&b->urb, xfer->wa->usb_dev,
@@ -462,6 +522,7 @@
error_submit:
+ wa_put(xfer->wa);
if (printk_ratelimit())
dev_err(dev, "xfer %p: Can't submit abort request: %d\n",
xfer, result);
@@ -733,6 +794,8 @@
seg->isoc_frame_offset + seg->isoc_frame_index);
/* resubmit the URB with the next isoc frame. */
+ /* take a ref on resubmit. */
+ wa_xfer_get(xfer);
result = usb_submit_urb(seg->dto_urb, GFP_ATOMIC);
if (result < 0) {
dev_err(dev, "xfer 0x%08X#%u: DTO submit failed: %d\n",
@@ -760,9 +823,13 @@
goto error_default;
}
+ /* taken when this URB was submitted. */
+ wa_xfer_put(xfer);
return;
error_dto_submit:
+ /* taken on resubmit attempt. */
+ wa_xfer_put(xfer);
error_default:
spin_lock_irqsave(&xfer->lock, flags);
rpipe = xfer->ep->hcpriv;
@@ -772,12 +839,10 @@
wa_reset_all(wa);
}
if (seg->status != WA_SEG_ERROR) {
- seg->status = WA_SEG_ERROR;
seg->result = urb->status;
- xfer->segs_done++;
__wa_xfer_abort(xfer);
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_ERROR);
}
spin_unlock_irqrestore(&xfer->lock, flags);
if (holding_dto) {
@@ -788,7 +853,8 @@
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
-
+ /* taken when this URB was submitted. */
+ wa_xfer_put(xfer);
}
/*
@@ -842,12 +908,11 @@
}
if (seg->status != WA_SEG_ERROR) {
usb_unlink_urb(seg->dto_urb);
- seg->status = WA_SEG_ERROR;
seg->result = urb->status;
- xfer->segs_done++;
__wa_xfer_abort(xfer);
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg,
+ WA_SEG_ERROR);
}
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
@@ -855,6 +920,8 @@
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
+ /* taken when this URB was submitted. */
+ wa_xfer_put(xfer);
}
/*
@@ -919,18 +986,18 @@
}
usb_unlink_urb(seg->isoc_pack_desc_urb);
usb_unlink_urb(seg->dto_urb);
- seg->status = WA_SEG_ERROR;
seg->result = urb->status;
- xfer->segs_done++;
__wa_xfer_abort(xfer);
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_ERROR);
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
+ /* taken when this URB was submitted. */
+ wa_xfer_put(xfer);
}
/*
@@ -940,7 +1007,7 @@
*/
static struct scatterlist *wa_xfer_create_subset_sg(struct scatterlist *in_sg,
const unsigned int bytes_transferred,
- const unsigned int bytes_to_transfer, unsigned int *out_num_sgs)
+ const unsigned int bytes_to_transfer, int *out_num_sgs)
{
struct scatterlist *out_sg;
unsigned int bytes_processed = 0, offset_into_current_page_data = 0,
@@ -1094,14 +1161,13 @@
*/
static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size)
{
- int result, cnt, iso_frame_offset;
+ int result, cnt, isoc_frame_offset = 0;
size_t alloc_size = sizeof(*xfer->seg[0])
- sizeof(xfer->seg[0]->xfer_hdr) + xfer_hdr_size;
struct usb_device *usb_dev = xfer->wa->usb_dev;
const struct usb_endpoint_descriptor *dto_epd = xfer->wa->dto_epd;
struct wa_seg *seg;
size_t buf_itr, buf_size, buf_itr_size;
- int isoc_frame_offset = 0;
result = -ENOMEM;
xfer->seg = kcalloc(xfer->segs, sizeof(xfer->seg[0]), GFP_ATOMIC);
@@ -1109,7 +1175,6 @@
goto error_segs_kzalloc;
buf_itr = 0;
buf_size = xfer->urb->transfer_buffer_length;
- iso_frame_offset = 0;
for (cnt = 0; cnt < xfer->segs; cnt++) {
size_t iso_pkt_descr_size = 0;
int seg_isoc_frame_count = 0, seg_isoc_size = 0;
@@ -1318,30 +1383,41 @@
/* default to done unless we encounter a multi-frame isoc segment. */
*dto_done = 1;
+ /*
+ * Take a ref for each segment urb so the xfer cannot disappear until
+ * all of the callbacks run.
+ */
+ wa_xfer_get(xfer);
/* submit the transfer request. */
+ seg->status = WA_SEG_SUBMITTED;
result = usb_submit_urb(&seg->tr_urb, GFP_ATOMIC);
if (result < 0) {
pr_err("%s: xfer %p#%u: REQ submit failed: %d\n",
__func__, xfer, seg->index, result);
- goto error_seg_submit;
+ wa_xfer_put(xfer);
+ goto error_tr_submit;
}
/* submit the isoc packet descriptor if present. */
if (seg->isoc_pack_desc_urb) {
+ wa_xfer_get(xfer);
result = usb_submit_urb(seg->isoc_pack_desc_urb, GFP_ATOMIC);
seg->isoc_frame_index = 0;
if (result < 0) {
pr_err("%s: xfer %p#%u: ISO packet descriptor submit failed: %d\n",
__func__, xfer, seg->index, result);
+ wa_xfer_put(xfer);
goto error_iso_pack_desc_submit;
}
}
/* submit the out data if this is an out request. */
if (seg->dto_urb) {
struct wahc *wa = xfer->wa;
+ wa_xfer_get(xfer);
result = usb_submit_urb(seg->dto_urb, GFP_ATOMIC);
if (result < 0) {
pr_err("%s: xfer %p#%u: DTO submit failed: %d\n",
__func__, xfer, seg->index, result);
+ wa_xfer_put(xfer);
goto error_dto_submit;
}
/*
@@ -1353,7 +1429,6 @@
&& (seg->isoc_frame_count > 1))
*dto_done = 0;
}
- seg->status = WA_SEG_SUBMITTED;
rpipe_avail_dec(rpipe);
return 0;
@@ -1361,7 +1436,7 @@
usb_unlink_urb(seg->isoc_pack_desc_urb);
error_iso_pack_desc_submit:
usb_unlink_urb(&seg->tr_urb);
-error_seg_submit:
+error_tr_submit:
seg->status = WA_SEG_ERROR;
seg->result = result;
*dto_done = 1;
@@ -1393,6 +1468,12 @@
list_node);
list_del(&seg->list_node);
xfer = seg->xfer;
+ /*
+ * Get a reference to the xfer in case the callbacks for the
+ * URBs submitted by __wa_seg_submit attempt to complete
+ * the xfer before this function completes.
+ */
+ wa_xfer_get(xfer);
result = __wa_seg_submit(rpipe, xfer, seg, &dto_done);
/* release the dto resource if this RPIPE is done with it. */
if (dto_done)
@@ -1401,13 +1482,23 @@
xfer, wa_xfer_id(xfer), seg->index,
atomic_read(&rpipe->segs_available), result);
if (unlikely(result < 0)) {
+ int done;
+
spin_unlock_irqrestore(&rpipe->seg_lock, flags);
spin_lock_irqsave(&xfer->lock, flags);
__wa_xfer_abort(xfer);
+ /*
+ * This seg was marked as submitted when it was put on
+ * the RPIPE seg_list. Mark it done.
+ */
xfer->segs_done++;
+ done = __wa_xfer_is_done(xfer);
spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
spin_lock_irqsave(&rpipe->seg_lock, flags);
}
+ wa_xfer_put(xfer);
}
/*
* Mark this RPIPE as waiting if dto was not acquired, there are
@@ -1592,12 +1683,19 @@
dev_err(&(urb->dev->dev), "%s: error_xfer_setup\n", __func__);
goto error_xfer_setup;
}
+ /*
+ * Get a xfer reference since __wa_xfer_submit starts asynchronous
+ * operations that may try to complete the xfer before this function
+ * exits.
+ */
+ wa_xfer_get(xfer);
result = __wa_xfer_submit(xfer);
if (result < 0) {
dev_err(&(urb->dev->dev), "%s: error_xfer_submit\n", __func__);
goto error_xfer_submit;
}
spin_unlock_irqrestore(&xfer->lock, flags);
+ wa_xfer_put(xfer);
return 0;
/*
@@ -1623,6 +1721,7 @@
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
wa_xfer_completion(xfer);
+ wa_xfer_put(xfer);
/* return success since the completion routine will run. */
return 0;
}
@@ -1832,20 +1931,20 @@
/* check if it is safe to unlink. */
spin_lock_irqsave(&wa->xfer_list_lock, flags);
result = usb_hcd_check_unlink_urb(&(wa->wusb->usb_hcd), urb, status);
+ if ((result == 0) && urb->hcpriv) {
+ /*
+ * Get a xfer ref to prevent a race with wa_xfer_giveback
+ * cleaning up the xfer while we are working with it.
+ */
+ wa_xfer_get(urb->hcpriv);
+ }
spin_unlock_irqrestore(&wa->xfer_list_lock, flags);
if (result)
return result;
xfer = urb->hcpriv;
- if (xfer == NULL) {
- /*
- * Nothing setup yet enqueue will see urb->status !=
- * -EINPROGRESS (by hcd layer) and bail out with
- * error, no need to do completion
- */
- BUG_ON(urb->status == -EINPROGRESS);
- goto out;
- }
+ if (xfer == NULL)
+ return -ENOENT;
spin_lock_irqsave(&xfer->lock, flags);
pr_debug("%s: DEQUEUE xfer id 0x%08X\n", __func__, wa_xfer_id(xfer));
rpipe = xfer->ep->hcpriv;
@@ -1856,6 +1955,16 @@
result = -ENOENT;
goto out_unlock;
}
+ /*
+ * Check for done to avoid racing with wa_xfer_giveback and completing
+ * twice.
+ */
+ if (__wa_xfer_is_done(xfer)) {
+ pr_debug("%s: xfer %p id 0x%08X already done.\n", __func__,
+ xfer, wa_xfer_id(xfer));
+ result = -ENOENT;
+ goto out_unlock;
+ }
/* Check the delayed list -> if there, release and complete */
spin_lock_irqsave(&wa->xfer_list_lock, flags2);
if (!list_empty(&xfer->list_node) && xfer->seg == NULL)
@@ -1865,6 +1974,11 @@
goto out_unlock; /* setup(), enqueue_b() completes */
/* Ok, the xfer is in flight already, it's been setup and submitted.*/
xfer_abort_pending = __wa_xfer_abort(xfer) >= 0;
+ /*
+ * grab the rpipe->seg_lock here to prevent racing with
+ * __wa_xfer_delayed_run.
+ */
+ spin_lock(&rpipe->seg_lock);
for (cnt = 0; cnt < xfer->segs; cnt++) {
seg = xfer->seg[cnt];
pr_debug("%s: xfer id 0x%08X#%d status = %d\n",
@@ -1885,16 +1999,24 @@
*/
seg->status = WA_SEG_ABORTED;
seg->result = -ENOENT;
- spin_lock_irqsave(&rpipe->seg_lock, flags2);
list_del(&seg->list_node);
xfer->segs_done++;
- spin_unlock_irqrestore(&rpipe->seg_lock, flags2);
break;
case WA_SEG_DONE:
case WA_SEG_ERROR:
case WA_SEG_ABORTED:
break;
/*
+ * The buf_in data for a segment in the
+ * WA_SEG_DTI_PENDING state is actively being read.
+ * Let wa_buf_in_cb handle it since it will be called
+ * and will increment xfer->segs_done. Cleaning up
+ * here could cause wa_buf_in_cb to access the xfer
+ * after it has been completed/freed.
+ */
+ case WA_SEG_DTI_PENDING:
+ break;
+ /*
* In the states below, the HWA device already knows
* about the transfer. If an abort request was sent,
* allow the HWA to process it and wait for the
@@ -1903,7 +2025,6 @@
*/
case WA_SEG_SUBMITTED:
case WA_SEG_PENDING:
- case WA_SEG_DTI_PENDING:
/*
* Check if the abort was successfully sent. This could
* be false if the HWA has been removed but we haven't
@@ -1917,6 +2038,7 @@
break;
}
}
+ spin_unlock(&rpipe->seg_lock);
xfer->result = urb->status; /* -ENOENT or -ECONNRESET */
done = __wa_xfer_is_done(xfer);
spin_unlock_irqrestore(&xfer->lock, flags);
@@ -1924,11 +2046,12 @@
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
+ wa_xfer_put(xfer);
return result;
out_unlock:
spin_unlock_irqrestore(&xfer->lock, flags);
-out:
+ wa_xfer_put(xfer);
return result;
dequeue_delayed:
@@ -1937,6 +2060,7 @@
xfer->result = urb->status;
spin_unlock_irqrestore(&xfer->lock, flags);
wa_xfer_giveback(xfer);
+ wa_xfer_put(xfer);
usb_put_urb(urb); /* we got a ref in enqueue() */
return 0;
}
@@ -1996,15 +2120,17 @@
* no other segment transfer results will be returned from the device.
* Mark the remaining submitted or pending xfers as completed so that
* the xfer will complete cleanly.
+ *
+ * xfer->lock must be held
+ *
*/
static void wa_complete_remaining_xfer_segs(struct wa_xfer *xfer,
- struct wa_seg *incoming_seg, enum wa_seg_status status)
+ int starting_index, enum wa_seg_status status)
{
int index;
struct wa_rpipe *rpipe = xfer->ep->hcpriv;
- for (index = incoming_seg->index + 1; index < xfer->segs_submitted;
- index++) {
+ for (index = starting_index; index < xfer->segs_submitted; index++) {
struct wa_seg *current_seg = xfer->seg[index];
BUG_ON(current_seg == NULL);
@@ -2033,73 +2159,110 @@
}
}
-/* Populate the wa->buf_in_urb based on the current isoc transfer state. */
-static void __wa_populate_buf_in_urb_isoc(struct wahc *wa, struct wa_xfer *xfer,
- struct wa_seg *seg, int curr_iso_frame)
+/* Populate the given urb based on the current isoc transfer state. */
+static int __wa_populate_buf_in_urb_isoc(struct wahc *wa,
+ struct urb *buf_in_urb, struct wa_xfer *xfer, struct wa_seg *seg)
{
- BUG_ON(wa->buf_in_urb->status == -EINPROGRESS);
+ int urb_start_frame = seg->isoc_frame_index + seg->isoc_frame_offset;
+ int seg_index, total_len = 0, urb_frame_index = urb_start_frame;
+ struct usb_iso_packet_descriptor *iso_frame_desc =
+ xfer->urb->iso_frame_desc;
+ const int dti_packet_size = usb_endpoint_maxp(wa->dti_epd);
+ int next_frame_contiguous;
+ struct usb_iso_packet_descriptor *iso_frame;
+
+ BUG_ON(buf_in_urb->status == -EINPROGRESS);
+
+ /*
+ * If the current frame actual_length is contiguous with the next frame
+ * and actual_length is a multiple of the DTI endpoint max packet size,
+ * combine the current frame with the next frame in a single URB. This
+ * reduces the number of URBs that must be submitted in that case.
+ */
+ seg_index = seg->isoc_frame_index;
+ do {
+ next_frame_contiguous = 0;
+
+ iso_frame = &iso_frame_desc[urb_frame_index];
+ total_len += iso_frame->actual_length;
+ ++urb_frame_index;
+ ++seg_index;
+
+ if (seg_index < seg->isoc_frame_count) {
+ struct usb_iso_packet_descriptor *next_iso_frame;
+
+ next_iso_frame = &iso_frame_desc[urb_frame_index];
+
+ if ((iso_frame->offset + iso_frame->actual_length) ==
+ next_iso_frame->offset)
+ next_frame_contiguous = 1;
+ }
+ } while (next_frame_contiguous
+ && ((iso_frame->actual_length % dti_packet_size) == 0));
/* this should always be 0 before a resubmit. */
- wa->buf_in_urb->num_mapped_sgs = 0;
- wa->buf_in_urb->transfer_dma = xfer->urb->transfer_dma +
- xfer->urb->iso_frame_desc[curr_iso_frame].offset;
- wa->buf_in_urb->transfer_buffer_length =
- xfer->urb->iso_frame_desc[curr_iso_frame].length;
- wa->buf_in_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
- wa->buf_in_urb->transfer_buffer = NULL;
- wa->buf_in_urb->sg = NULL;
- wa->buf_in_urb->num_sgs = 0;
- wa->buf_in_urb->context = seg;
+ buf_in_urb->num_mapped_sgs = 0;
+ buf_in_urb->transfer_dma = xfer->urb->transfer_dma +
+ iso_frame_desc[urb_start_frame].offset;
+ buf_in_urb->transfer_buffer_length = total_len;
+ buf_in_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ buf_in_urb->transfer_buffer = NULL;
+ buf_in_urb->sg = NULL;
+ buf_in_urb->num_sgs = 0;
+ buf_in_urb->context = seg;
+
+ /* return the number of frames included in this URB. */
+ return seg_index - seg->isoc_frame_index;
}
-/* Populate the wa->buf_in_urb based on the current transfer state. */
-static int wa_populate_buf_in_urb(struct wahc *wa, struct wa_xfer *xfer,
+/* Populate the given urb based on the current transfer state. */
+static int wa_populate_buf_in_urb(struct urb *buf_in_urb, struct wa_xfer *xfer,
unsigned int seg_idx, unsigned int bytes_transferred)
{
int result = 0;
struct wa_seg *seg = xfer->seg[seg_idx];
- BUG_ON(wa->buf_in_urb->status == -EINPROGRESS);
+ BUG_ON(buf_in_urb->status == -EINPROGRESS);
/* this should always be 0 before a resubmit. */
- wa->buf_in_urb->num_mapped_sgs = 0;
+ buf_in_urb->num_mapped_sgs = 0;
if (xfer->is_dma) {
- wa->buf_in_urb->transfer_dma = xfer->urb->transfer_dma
+ buf_in_urb->transfer_dma = xfer->urb->transfer_dma
+ (seg_idx * xfer->seg_size);
- wa->buf_in_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
- wa->buf_in_urb->transfer_buffer = NULL;
- wa->buf_in_urb->sg = NULL;
- wa->buf_in_urb->num_sgs = 0;
+ buf_in_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ buf_in_urb->transfer_buffer = NULL;
+ buf_in_urb->sg = NULL;
+ buf_in_urb->num_sgs = 0;
} else {
/* do buffer or SG processing. */
- wa->buf_in_urb->transfer_flags &= ~URB_NO_TRANSFER_DMA_MAP;
+ buf_in_urb->transfer_flags &= ~URB_NO_TRANSFER_DMA_MAP;
if (xfer->urb->transfer_buffer) {
- wa->buf_in_urb->transfer_buffer =
+ buf_in_urb->transfer_buffer =
xfer->urb->transfer_buffer
+ (seg_idx * xfer->seg_size);
- wa->buf_in_urb->sg = NULL;
- wa->buf_in_urb->num_sgs = 0;
+ buf_in_urb->sg = NULL;
+ buf_in_urb->num_sgs = 0;
} else {
/* allocate an SG list to store seg_size bytes
and copy the subset of the xfer->urb->sg
that matches the buffer subset we are
about to read. */
- wa->buf_in_urb->sg = wa_xfer_create_subset_sg(
+ buf_in_urb->sg = wa_xfer_create_subset_sg(
xfer->urb->sg,
seg_idx * xfer->seg_size,
bytes_transferred,
- &(wa->buf_in_urb->num_sgs));
+ &(buf_in_urb->num_sgs));
- if (!(wa->buf_in_urb->sg)) {
- wa->buf_in_urb->num_sgs = 0;
+ if (!(buf_in_urb->sg)) {
+ buf_in_urb->num_sgs = 0;
result = -ENOMEM;
}
- wa->buf_in_urb->transfer_buffer = NULL;
+ buf_in_urb->transfer_buffer = NULL;
}
}
- wa->buf_in_urb->transfer_buffer_length = bytes_transferred;
- wa->buf_in_urb->context = seg;
+ buf_in_urb->transfer_buffer_length = bytes_transferred;
+ buf_in_urb->context = seg;
return result;
}
@@ -2124,6 +2287,7 @@
u8 usb_status;
unsigned rpipe_ready = 0;
unsigned bytes_transferred = le32_to_cpu(xfer_result->dwTransferLength);
+ struct urb *buf_in_urb = &(wa->buf_in_urbs[0]);
spin_lock_irqsave(&xfer->lock, flags);
seg_idx = xfer_result->bTransferSegment & 0x7f;
@@ -2147,7 +2311,7 @@
}
if (usb_status & 0x80) {
seg->result = wa_xfer_status_to_errno(usb_status);
- dev_err(dev, "DTI: xfer %p#:%08X:%u failed (0x%02x)\n",
+ dev_err(dev, "DTI: xfer %p 0x%08X:#%u failed (0x%02x)\n",
xfer, xfer->id, seg->index, usb_status);
seg->status = ((usb_status & 0x7F) == WA_XFER_STATUS_ABORTED) ?
WA_SEG_ABORTED : WA_SEG_ERROR;
@@ -2162,7 +2326,8 @@
* transfers with data or below for no data, the xfer will complete.
*/
if (xfer_result->bTransferSegment & 0x80)
- wa_complete_remaining_xfer_segs(xfer, seg, WA_SEG_DONE);
+ wa_complete_remaining_xfer_segs(xfer, seg->index + 1,
+ WA_SEG_DONE);
if (usb_pipeisoc(xfer->urb->pipe)
&& (le32_to_cpu(xfer_result->dwNumOfPackets) > 0)) {
/* set up WA state to read the isoc packet status next. */
@@ -2173,20 +2338,21 @@
&& (bytes_transferred > 0)) {
/* IN data phase: read to buffer */
seg->status = WA_SEG_DTI_PENDING;
- result = wa_populate_buf_in_urb(wa, xfer, seg_idx,
+ result = wa_populate_buf_in_urb(buf_in_urb, xfer, seg_idx,
bytes_transferred);
if (result < 0)
goto error_buf_in_populate;
- result = usb_submit_urb(wa->buf_in_urb, GFP_ATOMIC);
- if (result < 0)
+ ++(wa->active_buf_in_urbs);
+ result = usb_submit_urb(buf_in_urb, GFP_ATOMIC);
+ if (result < 0) {
+ --(wa->active_buf_in_urbs);
goto error_submit_buf_in;
+ }
} else {
/* OUT data phase or no data, complete it -- */
- seg->status = WA_SEG_DONE;
seg->result = bytes_transferred;
- xfer->segs_done++;
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_DONE);
}
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
@@ -2205,15 +2371,15 @@
dev_err(dev, "xfer %p#%u: can't submit DTI data phase: %d\n",
xfer, seg_idx, result);
seg->result = result;
- kfree(wa->buf_in_urb->sg);
- wa->buf_in_urb->sg = NULL;
+ kfree(buf_in_urb->sg);
+ buf_in_urb->sg = NULL;
error_buf_in_populate:
__wa_xfer_abort(xfer);
seg->status = WA_SEG_ERROR;
error_complete:
xfer->segs_done++;
rpipe_ready = rpipe_avail_inc(rpipe);
- wa_complete_remaining_xfer_segs(xfer, seg, seg->status);
+ wa_complete_remaining_xfer_segs(xfer, seg->index + 1, seg->status);
done = __wa_xfer_is_done(xfer);
/*
* queue work item to clear STALL for control endpoints.
@@ -2315,16 +2481,16 @@
for (seg_index = 0; seg_index < seg->isoc_frame_count; ++seg_index) {
struct usb_iso_packet_descriptor *iso_frame_desc =
xfer->urb->iso_frame_desc;
- const int urb_frame_index =
+ const int xfer_frame_index =
seg->isoc_frame_offset + seg_index;
- iso_frame_desc[urb_frame_index].status =
+ iso_frame_desc[xfer_frame_index].status =
wa_xfer_status_to_errno(
le16_to_cpu(status_array[seg_index].PacketStatus));
- iso_frame_desc[urb_frame_index].actual_length =
+ iso_frame_desc[xfer_frame_index].actual_length =
le16_to_cpu(status_array[seg_index].PacketLength);
/* track the number of frames successfully transferred. */
- if (iso_frame_desc[urb_frame_index].actual_length > 0) {
+ if (iso_frame_desc[xfer_frame_index].actual_length > 0) {
/* save the starting frame index for buf_in_urb. */
if (!data_frame_count)
first_frame_index = seg_index;
@@ -2333,30 +2499,64 @@
}
if (xfer->is_inbound && data_frame_count) {
- int result;
+ int result, total_frames_read = 0, urb_index = 0;
+ struct urb *buf_in_urb;
+ /* IN data phase: read to buffer */
+ seg->status = WA_SEG_DTI_PENDING;
+
+ /* start with the first frame with data. */
seg->isoc_frame_index = first_frame_index;
- /* submit a read URB for the first frame with data. */
- __wa_populate_buf_in_urb_isoc(wa, xfer, seg,
- seg->isoc_frame_index + seg->isoc_frame_offset);
+ /* submit up to WA_MAX_BUF_IN_URBS read URBs. */
+ do {
+ int urb_frame_index, urb_frame_count;
+ struct usb_iso_packet_descriptor *iso_frame_desc;
- result = usb_submit_urb(wa->buf_in_urb, GFP_ATOMIC);
+ buf_in_urb = &(wa->buf_in_urbs[urb_index]);
+ urb_frame_count = __wa_populate_buf_in_urb_isoc(wa,
+ buf_in_urb, xfer, seg);
+ /* advance frame index to start of next read URB. */
+ seg->isoc_frame_index += urb_frame_count;
+ total_frames_read += urb_frame_count;
+
+ ++(wa->active_buf_in_urbs);
+ result = usb_submit_urb(buf_in_urb, GFP_ATOMIC);
+
+ /* skip 0-byte frames. */
+ urb_frame_index =
+ seg->isoc_frame_offset + seg->isoc_frame_index;
+ iso_frame_desc =
+ &(xfer->urb->iso_frame_desc[urb_frame_index]);
+ while ((seg->isoc_frame_index <
+ seg->isoc_frame_count) &&
+ (iso_frame_desc->actual_length == 0)) {
+ ++(seg->isoc_frame_index);
+ ++iso_frame_desc;
+ }
+ ++urb_index;
+
+ } while ((result == 0) && (urb_index < WA_MAX_BUF_IN_URBS)
+ && (seg->isoc_frame_index <
+ seg->isoc_frame_count));
+
if (result < 0) {
+ --(wa->active_buf_in_urbs);
dev_err(dev, "DTI Error: Could not submit buf in URB (%d)",
result);
wa_reset_all(wa);
- } else if (data_frame_count > 1)
- /* If we need to read multiple frames, set DTI busy. */
+ } else if (data_frame_count > total_frames_read)
+ /* If we need to read more frames, set DTI busy. */
dti_busy = 1;
} else {
/* OUT transfer or no more IN data, complete it -- */
- seg->status = WA_SEG_DONE;
- xfer->segs_done++;
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg, WA_SEG_DONE);
}
spin_unlock_irqrestore(&xfer->lock, flags);
- wa->dti_state = WA_DTI_TRANSFER_RESULT_PENDING;
+ if (dti_busy)
+ wa->dti_state = WA_DTI_BUF_IN_DATA_PENDING;
+ else
+ wa->dti_state = WA_DTI_TRANSFER_RESULT_PENDING;
if (done)
wa_xfer_completion(xfer);
if (rpipe_ready)
@@ -2388,8 +2588,9 @@
struct wahc *wa;
struct device *dev;
struct wa_rpipe *rpipe;
- unsigned rpipe_ready = 0, seg_index, isoc_data_frame_count = 0;
+ unsigned rpipe_ready = 0, isoc_data_frame_count = 0;
unsigned long flags;
+ int resubmit_dti = 0, active_buf_in_urbs;
u8 done = 0;
/* free the sg if it was used. */
@@ -2399,19 +2600,20 @@
spin_lock_irqsave(&xfer->lock, flags);
wa = xfer->wa;
dev = &wa->usb_iface->dev;
+ --(wa->active_buf_in_urbs);
+ active_buf_in_urbs = wa->active_buf_in_urbs;
if (usb_pipeisoc(xfer->urb->pipe)) {
+ struct usb_iso_packet_descriptor *iso_frame_desc =
+ xfer->urb->iso_frame_desc;
+ int seg_index;
+
/*
- * Find the next isoc frame with data. Bail out after
- * isoc_data_frame_count > 1 since there is no need to walk
- * the entire frame array. We just need to know if
- * isoc_data_frame_count is 0, 1, or >1.
+ * Find the next isoc frame with data and count how many
+ * frames with data remain.
*/
- seg_index = seg->isoc_frame_index + 1;
- while ((seg_index < seg->isoc_frame_count)
- && (isoc_data_frame_count <= 1)) {
- struct usb_iso_packet_descriptor *iso_frame_desc =
- xfer->urb->iso_frame_desc;
+ seg_index = seg->isoc_frame_index;
+ while (seg_index < seg->isoc_frame_count) {
const int urb_frame_index =
seg->isoc_frame_offset + seg_index;
@@ -2432,24 +2634,39 @@
seg->result += urb->actual_length;
if (isoc_data_frame_count > 0) {
- int result;
- /* submit a read URB for the first frame with data. */
- __wa_populate_buf_in_urb_isoc(wa, xfer, seg,
- seg->isoc_frame_index + seg->isoc_frame_offset);
- result = usb_submit_urb(wa->buf_in_urb, GFP_ATOMIC);
+ int result, urb_frame_count;
+
+ /* submit a read URB for the next frame with data. */
+ urb_frame_count = __wa_populate_buf_in_urb_isoc(wa, urb,
+ xfer, seg);
+ /* advance index to start of next read URB. */
+ seg->isoc_frame_index += urb_frame_count;
+ ++(wa->active_buf_in_urbs);
+ result = usb_submit_urb(urb, GFP_ATOMIC);
if (result < 0) {
+ --(wa->active_buf_in_urbs);
dev_err(dev, "DTI Error: Could not submit buf in URB (%d)",
result);
wa_reset_all(wa);
}
- } else {
+ /*
+ * If we are in this callback and
+ * isoc_data_frame_count > 0, it means that the dti_urb
+ * submission was delayed in wa_dti_cb. Once
+ * we submit the last buf_in_urb, we can submit the
+ * delayed dti_urb.
+ */
+ resubmit_dti = (isoc_data_frame_count ==
+ urb_frame_count);
+ } else if (active_buf_in_urbs == 0) {
rpipe = xfer->ep->hcpriv;
- seg->status = WA_SEG_DONE;
- dev_dbg(dev, "xfer %p#%u: data in done (%zu bytes)\n",
- xfer, seg->index, seg->result);
- xfer->segs_done++;
+ dev_dbg(dev,
+ "xfer %p 0x%08X#%u: data in done (%zu bytes)\n",
+ xfer, wa_xfer_id(xfer), seg->index,
+ seg->result);
rpipe_ready = rpipe_avail_inc(rpipe);
- done = __wa_xfer_is_done(xfer);
+ done = __wa_xfer_mark_seg_as_done(xfer, seg,
+ WA_SEG_DONE);
}
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
@@ -2461,37 +2678,44 @@
case -ENOENT: /* as it was done by the who unlinked us */
break;
default: /* Other errors ... */
+ /*
+ * Error on data buf read. Only resubmit DTI if it hasn't
+ * already been done by previously hitting this error or by a
+ * successful completion of the previous buf_in_urb.
+ */
+ resubmit_dti = wa->dti_state != WA_DTI_TRANSFER_RESULT_PENDING;
spin_lock_irqsave(&xfer->lock, flags);
rpipe = xfer->ep->hcpriv;
if (printk_ratelimit())
- dev_err(dev, "xfer %p#%u: data in error %d\n",
- xfer, seg->index, urb->status);
+ dev_err(dev, "xfer %p 0x%08X#%u: data in error %d\n",
+ xfer, wa_xfer_id(xfer), seg->index,
+ urb->status);
if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
EDC_ERROR_TIMEFRAME)){
dev_err(dev, "DTO: URB max acceptable errors "
"exceeded, resetting device\n");
wa_reset_all(wa);
}
- seg->status = WA_SEG_ERROR;
seg->result = urb->status;
- xfer->segs_done++;
rpipe_ready = rpipe_avail_inc(rpipe);
- __wa_xfer_abort(xfer);
- done = __wa_xfer_is_done(xfer);
+ if (active_buf_in_urbs == 0)
+ done = __wa_xfer_mark_seg_as_done(xfer, seg,
+ WA_SEG_ERROR);
+ else
+ __wa_xfer_abort(xfer);
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
- /*
- * If we are in this callback and isoc_data_frame_count > 0, it means
- * that the dti_urb submission was delayed in wa_dti_cb. Once
- * isoc_data_frame_count gets to 1, we can submit the deferred URB
- * since the last buf_in_urb was just submitted.
- */
- if (isoc_data_frame_count == 1) {
- int result = usb_submit_urb(wa->dti_urb, GFP_ATOMIC);
+
+ if (resubmit_dti) {
+ int result;
+
+ wa->dti_state = WA_DTI_TRANSFER_RESULT_PENDING;
+
+ result = usb_submit_urb(wa->dti_urb, GFP_ATOMIC);
if (result < 0) {
dev_err(dev, "DTI Error: Could not submit DTI URB (%d)\n",
result);
@@ -2561,11 +2785,15 @@
xfer_result->hdr.bNotifyType);
break;
}
- usb_status = xfer_result->bTransferStatus & 0x3f;
- if (usb_status == WA_XFER_STATUS_NOT_FOUND)
- /* taken care of already */
- break;
xfer_id = le32_to_cpu(xfer_result->dwTransferID);
+ usb_status = xfer_result->bTransferStatus & 0x3f;
+ if (usb_status == WA_XFER_STATUS_NOT_FOUND) {
+ /* taken care of already */
+ dev_dbg(dev, "%s: xfer 0x%08X#%u not found.\n",
+ __func__, xfer_id,
+ xfer_result->bTransferSegment & 0x7f);
+ break;
+ }
xfer = wa_xfer_get_by_id(wa, xfer_id);
if (xfer == NULL) {
/* FIXME: transaction not found. */
@@ -2614,6 +2842,54 @@
}
/*
+ * Initialize the DTI URB for reading transfer result notifications and also
+ * the buffer-in URB, for reading buffers. Then we just submit the DTI URB.
+ */
+int wa_dti_start(struct wahc *wa)
+{
+ const struct usb_endpoint_descriptor *dti_epd = wa->dti_epd;
+ struct device *dev = &wa->usb_iface->dev;
+ int result = -ENOMEM, index;
+
+ if (wa->dti_urb != NULL) /* DTI URB already started */
+ goto out;
+
+ wa->dti_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (wa->dti_urb == NULL) {
+ dev_err(dev, "Can't allocate DTI URB\n");
+ goto error_dti_urb_alloc;
+ }
+ usb_fill_bulk_urb(
+ wa->dti_urb, wa->usb_dev,
+ usb_rcvbulkpipe(wa->usb_dev, 0x80 | dti_epd->bEndpointAddress),
+ wa->dti_buf, wa->dti_buf_size,
+ wa_dti_cb, wa);
+
+ /* init the buf in URBs */
+ for (index = 0; index < WA_MAX_BUF_IN_URBS; ++index) {
+ usb_fill_bulk_urb(
+ &(wa->buf_in_urbs[index]), wa->usb_dev,
+ usb_rcvbulkpipe(wa->usb_dev,
+ 0x80 | dti_epd->bEndpointAddress),
+ NULL, 0, wa_buf_in_cb, wa);
+ }
+ result = usb_submit_urb(wa->dti_urb, GFP_KERNEL);
+ if (result < 0) {
+ dev_err(dev, "DTI Error: Could not submit DTI URB (%d) resetting\n",
+ result);
+ goto error_dti_urb_submit;
+ }
+out:
+ return 0;
+
+error_dti_urb_submit:
+ usb_put_urb(wa->dti_urb);
+ wa->dti_urb = NULL;
+error_dti_urb_alloc:
+ return result;
+}
+EXPORT_SYMBOL_GPL(wa_dti_start);
+/*
* Transfer complete notification
*
* Called from the notif.c code. We get a notification on EP2 saying
@@ -2627,15 +2903,10 @@
* Follow up in wa_dti_cb(), as that's where the whole state
* machine starts.
*
- * So here we just initialize the DTI URB for reading transfer result
- * notifications and also the buffer-in URB, for reading buffers. Then
- * we just submit the DTI URB.
- *
* @wa shall be referenced
*/
void wa_handle_notif_xfer(struct wahc *wa, struct wa_notif_hdr *notif_hdr)
{
- int result;
struct device *dev = &wa->usb_iface->dev;
struct wa_notif_xfer *notif_xfer;
const struct usb_endpoint_descriptor *dti_epd = wa->dti_epd;
@@ -2649,45 +2920,13 @@
notif_xfer->bEndpoint, dti_epd->bEndpointAddress);
goto error;
}
- if (wa->dti_urb != NULL) /* DTI URB already started */
- goto out;
- wa->dti_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (wa->dti_urb == NULL) {
- dev_err(dev, "Can't allocate DTI URB\n");
- goto error_dti_urb_alloc;
- }
- usb_fill_bulk_urb(
- wa->dti_urb, wa->usb_dev,
- usb_rcvbulkpipe(wa->usb_dev, 0x80 | notif_xfer->bEndpoint),
- wa->dti_buf, wa->dti_buf_size,
- wa_dti_cb, wa);
+ /* attempt to start the DTI ep processing. */
+ if (wa_dti_start(wa) < 0)
+ goto error;
- wa->buf_in_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (wa->buf_in_urb == NULL) {
- dev_err(dev, "Can't allocate BUF-IN URB\n");
- goto error_buf_in_urb_alloc;
- }
- usb_fill_bulk_urb(
- wa->buf_in_urb, wa->usb_dev,
- usb_rcvbulkpipe(wa->usb_dev, 0x80 | notif_xfer->bEndpoint),
- NULL, 0, wa_buf_in_cb, wa);
- result = usb_submit_urb(wa->dti_urb, GFP_KERNEL);
- if (result < 0) {
- dev_err(dev, "DTI Error: Could not submit DTI URB (%d) resetting\n",
- result);
- goto error_dti_urb_submit;
- }
-out:
return;
-error_dti_urb_submit:
- usb_put_urb(wa->buf_in_urb);
- wa->buf_in_urb = NULL;
-error_buf_in_urb_alloc:
- usb_put_urb(wa->dti_urb);
- wa->dti_urb = NULL;
-error_dti_urb_alloc:
error:
wa_reset_all(wa);
}