Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/sata_via.c b/drivers/scsi/sata_via.c
new file mode 100644
index 0000000..3a78306
--- /dev/null
+++ b/drivers/scsi/sata_via.c
@@ -0,0 +1,387 @@
+/*
+ sata_via.c - VIA Serial ATA controllers
+
+ Maintained by: Jeff Garzik <jgarzik@pobox.com>
+ Please ALWAYS copy linux-ide@vger.kernel.org
+ on emails.
+
+ Copyright 2003-2004 Red Hat, Inc. All rights reserved.
+ Copyright 2003-2004 Jeff Garzik
+
+ The contents of this file are subject to the Open
+ Software License version 1.1 that can be found at
+ http://www.opensource.org/licenses/osl-1.1.txt and is included herein
+ by reference.
+
+ Alternatively, the contents of this file may be used under the terms
+ of the GNU General Public License version 2 (the "GPL") as distributed
+ in the kernel source COPYING file, in which case the provisions of
+ the GPL are applicable instead of the above. If you wish to allow
+ the use of your version of this file only under the terms of the
+ GPL and not to allow others to use your version of this file under
+ the OSL, indicate your decision by deleting the provisions above and
+ replace them with the notice and other provisions required by the GPL.
+ If you do not delete the provisions above, a recipient may use your
+ version of this file under either the OSL or the GPL.
+
+ ----------------------------------------------------------------------
+
+ To-do list:
+ * VT6421 PATA support
+
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+#include <asm/io.h>
+
+#define DRV_NAME "sata_via"
+#define DRV_VERSION "1.1"
+
+enum board_ids_enum {
+ vt6420,
+ vt6421,
+};
+
+enum {
+ SATA_CHAN_ENAB = 0x40, /* SATA channel enable */
+ SATA_INT_GATE = 0x41, /* SATA interrupt gating */
+ SATA_NATIVE_MODE = 0x42, /* Native mode enable */
+ SATA_PATA_SHARING = 0x49, /* PATA/SATA sharing func ctrl */
+
+ PORT0 = (1 << 1),
+ PORT1 = (1 << 0),
+ ALL_PORTS = PORT0 | PORT1,
+ N_PORTS = 2,
+
+ NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
+
+ SATA_EXT_PHY = (1 << 6), /* 0==use PATA, 1==ext phy */
+ SATA_2DEV = (1 << 5), /* SATA is master/slave */
+};
+
+static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
+static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
+static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
+
+static struct pci_device_id svia_pci_tbl[] = {
+ { 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
+ { 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },
+
+ { } /* terminate list */
+};
+
+static struct pci_driver svia_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = svia_pci_tbl,
+ .probe = svia_init_one,
+ .remove = ata_pci_remove_one,
+};
+
+static Scsi_Host_Template svia_sht = {
+ .module = THIS_MODULE,
+ .name = DRV_NAME,
+ .ioctl = ata_scsi_ioctl,
+ .queuecommand = ata_scsi_queuecmd,
+ .eh_strategy_handler = ata_scsi_error,
+ .can_queue = ATA_DEF_QUEUE,
+ .this_id = ATA_SHT_THIS_ID,
+ .sg_tablesize = LIBATA_MAX_PRD,
+ .max_sectors = ATA_MAX_SECTORS,
+ .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
+ .emulated = ATA_SHT_EMULATED,
+ .use_clustering = ATA_SHT_USE_CLUSTERING,
+ .proc_name = DRV_NAME,
+ .dma_boundary = ATA_DMA_BOUNDARY,
+ .slave_configure = ata_scsi_slave_config,
+ .bios_param = ata_std_bios_param,
+ .ordered_flush = 1,
+};
+
+static struct ata_port_operations svia_sata_ops = {
+ .port_disable = ata_port_disable,
+
+ .tf_load = ata_tf_load,
+ .tf_read = ata_tf_read,
+ .check_status = ata_check_status,
+ .exec_command = ata_exec_command,
+ .dev_select = ata_std_dev_select,
+
+ .phy_reset = sata_phy_reset,
+
+ .bmdma_setup = ata_bmdma_setup,
+ .bmdma_start = ata_bmdma_start,
+ .bmdma_stop = ata_bmdma_stop,
+ .bmdma_status = ata_bmdma_status,
+
+ .qc_prep = ata_qc_prep,
+ .qc_issue = ata_qc_issue_prot,
+
+ .eng_timeout = ata_eng_timeout,
+
+ .irq_handler = ata_interrupt,
+ .irq_clear = ata_bmdma_irq_clear,
+
+ .scr_read = svia_scr_read,
+ .scr_write = svia_scr_write,
+
+ .port_start = ata_port_start,
+ .port_stop = ata_port_stop,
+};
+
+static struct ata_port_info svia_port_info = {
+ .sht = &svia_sht,
+ .host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST | ATA_FLAG_NO_LEGACY,
+ .pio_mask = 0x1f,
+ .mwdma_mask = 0x07,
+ .udma_mask = 0x7f,
+ .port_ops = &svia_sata_ops,
+};
+
+MODULE_AUTHOR("Jeff Garzik");
+MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
+MODULE_VERSION(DRV_VERSION);
+
+static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg)
+{
+ if (sc_reg > SCR_CONTROL)
+ return 0xffffffffU;
+ return inl(ap->ioaddr.scr_addr + (4 * sc_reg));
+}
+
+static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
+{
+ if (sc_reg > SCR_CONTROL)
+ return;
+ outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
+}
+
+static const unsigned int svia_bar_sizes[] = {
+ 8, 4, 8, 4, 16, 256
+};
+
+static const unsigned int vt6421_bar_sizes[] = {
+ 16, 16, 16, 16, 32, 128
+};
+
+static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
+{
+ return addr + (port * 128);
+}
+
+static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
+{
+ return addr + (port * 64);
+}
+
+static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
+ struct pci_dev *pdev,
+ unsigned int port)
+{
+ unsigned long reg_addr = pci_resource_start(pdev, port);
+ unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
+ unsigned long scr_addr;
+
+ probe_ent->port[port].cmd_addr = reg_addr;
+ probe_ent->port[port].altstatus_addr =
+ probe_ent->port[port].ctl_addr = (reg_addr + 8) | ATA_PCI_CTL_OFS;
+ probe_ent->port[port].bmdma_addr = bmdma_addr;
+
+ scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
+ probe_ent->port[port].scr_addr = scr_addr;
+
+ ata_std_ports(&probe_ent->port[port]);
+}
+
+static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
+{
+ struct ata_probe_ent *probe_ent;
+ struct ata_port_info *ppi = &svia_port_info;
+
+ probe_ent = ata_pci_init_native_mode(pdev, &ppi);
+ if (!probe_ent)
+ return NULL;
+
+ probe_ent->port[0].scr_addr =
+ svia_scr_addr(pci_resource_start(pdev, 5), 0);
+ probe_ent->port[1].scr_addr =
+ svia_scr_addr(pci_resource_start(pdev, 5), 1);
+
+ return probe_ent;
+}
+
+static struct ata_probe_ent *vt6421_init_probe_ent(struct pci_dev *pdev)
+{
+ struct ata_probe_ent *probe_ent;
+ unsigned int i;
+
+ probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
+ if (!probe_ent)
+ return NULL;
+
+ memset(probe_ent, 0, sizeof(*probe_ent));
+ probe_ent->dev = pci_dev_to_dev(pdev);
+ INIT_LIST_HEAD(&probe_ent->node);
+
+ probe_ent->sht = &svia_sht;
+ probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
+ ATA_FLAG_NO_LEGACY;
+ probe_ent->port_ops = &svia_sata_ops;
+ probe_ent->n_ports = N_PORTS;
+ probe_ent->irq = pdev->irq;
+ probe_ent->irq_flags = SA_SHIRQ;
+ probe_ent->pio_mask = 0x1f;
+ probe_ent->mwdma_mask = 0x07;
+ probe_ent->udma_mask = 0x7f;
+
+ for (i = 0; i < N_PORTS; i++)
+ vt6421_init_addrs(probe_ent, pdev, i);
+
+ return probe_ent;
+}
+
+static void svia_configure(struct pci_dev *pdev)
+{
+ u8 tmp8;
+
+ pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
+ printk(KERN_INFO DRV_NAME "(%s): routed to hard irq line %d\n",
+ pci_name(pdev),
+ (int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
+
+ /* make sure SATA channels are enabled */
+ pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
+ if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
+ printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channels (0x%x)\n",
+ pci_name(pdev), (int) tmp8);
+ tmp8 |= ALL_PORTS;
+ pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
+ }
+
+ /* make sure interrupts for each channel sent to us */
+ pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
+ if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
+ printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channel interrupts (0x%x)\n",
+ pci_name(pdev), (int) tmp8);
+ tmp8 |= ALL_PORTS;
+ pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
+ }
+
+ /* make sure native mode is enabled */
+ pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
+ if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
+ printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channel native mode (0x%x)\n",
+ pci_name(pdev), (int) tmp8);
+ tmp8 |= NATIVE_MODE_ALL;
+ pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
+ }
+}
+
+static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ static int printed_version;
+ unsigned int i;
+ int rc;
+ struct ata_probe_ent *probe_ent;
+ int board_id = (int) ent->driver_data;
+ const int *bar_sizes;
+ int pci_dev_busy = 0;
+ u8 tmp8;
+
+ if (!printed_version++)
+ printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
+
+ rc = pci_enable_device(pdev);
+ if (rc)
+ return rc;
+
+ rc = pci_request_regions(pdev, DRV_NAME);
+ if (rc) {
+ pci_dev_busy = 1;
+ goto err_out;
+ }
+
+ if (board_id == vt6420) {
+ pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
+ if (tmp8 & SATA_2DEV) {
+ printk(KERN_ERR DRV_NAME "(%s): SATA master/slave not supported (0x%x)\n",
+ pci_name(pdev), (int) tmp8);
+ rc = -EIO;
+ goto err_out_regions;
+ }
+
+ bar_sizes = &svia_bar_sizes[0];
+ } else {
+ bar_sizes = &vt6421_bar_sizes[0];
+ }
+
+ for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
+ if ((pci_resource_start(pdev, i) == 0) ||
+ (pci_resource_len(pdev, i) < bar_sizes[i])) {
+ printk(KERN_ERR DRV_NAME "(%s): invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
+ pci_name(pdev), i,
+ pci_resource_start(pdev, i),
+ pci_resource_len(pdev, i));
+ rc = -ENODEV;
+ goto err_out_regions;
+ }
+
+ rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
+ if (rc)
+ goto err_out_regions;
+ rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
+ if (rc)
+ goto err_out_regions;
+
+ if (board_id == vt6420)
+ probe_ent = vt6420_init_probe_ent(pdev);
+ else
+ probe_ent = vt6421_init_probe_ent(pdev);
+
+ if (!probe_ent) {
+ printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
+ pci_name(pdev));
+ rc = -ENOMEM;
+ goto err_out_regions;
+ }
+
+ svia_configure(pdev);
+
+ pci_set_master(pdev);
+
+ /* FIXME: check ata_device_add return value */
+ ata_device_add(probe_ent);
+ kfree(probe_ent);
+
+ return 0;
+
+err_out_regions:
+ pci_release_regions(pdev);
+err_out:
+ if (!pci_dev_busy)
+ pci_disable_device(pdev);
+ return rc;
+}
+
+static int __init svia_init(void)
+{
+ return pci_module_init(&svia_pci_driver);
+}
+
+static void __exit svia_exit(void)
+{
+ pci_unregister_driver(&svia_pci_driver);
+}
+
+module_init(svia_init);
+module_exit(svia_exit);
+