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/net/wireless/prism54/isl_38xx.c b/drivers/net/wireless/prism54/isl_38xx.c
new file mode 100644
index 0000000..4481ec1
--- /dev/null
+++ b/drivers/net/wireless/prism54/isl_38xx.c
@@ -0,0 +1,260 @@
+/*
+ *
+ * Copyright (C) 2002 Intersil Americas Inc.
+ * Copyright (C) 2003-2004 Luis R. Rodriguez <mcgrof@ruslug.rutgers.edu>_
+ *
+ * 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
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#include "prismcompat.h"
+#include "isl_38xx.h"
+#include "islpci_dev.h"
+#include "islpci_mgt.h"
+
+/******************************************************************************
+ Device Interface & Control functions
+******************************************************************************/
+
+/**
+ * isl38xx_disable_interrupts - disable all interrupts
+ * @device: pci memory base address
+ *
+ * Instructs the device to disable all interrupt reporting by asserting
+ * the IRQ line. New events may still show up in the interrupt identification
+ * register located at offset %ISL38XX_INT_IDENT_REG.
+ */
+void
+isl38xx_disable_interrupts(void __iomem *device)
+{
+ isl38xx_w32_flush(device, 0x00000000, ISL38XX_INT_EN_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+}
+
+void
+isl38xx_handle_sleep_request(isl38xx_control_block *control_block,
+ int *powerstate, void __iomem *device_base)
+{
+ /* device requests to go into sleep mode
+ * check whether the transmit queues for data and management are empty */
+ if (isl38xx_in_queue(control_block, ISL38XX_CB_TX_DATA_LQ))
+ /* data tx queue not empty */
+ return;
+
+ if (isl38xx_in_queue(control_block, ISL38XX_CB_TX_MGMTQ))
+ /* management tx queue not empty */
+ return;
+
+ /* check also whether received frames are pending */
+ if (isl38xx_in_queue(control_block, ISL38XX_CB_RX_DATA_LQ))
+ /* data rx queue not empty */
+ return;
+
+ if (isl38xx_in_queue(control_block, ISL38XX_CB_RX_MGMTQ))
+ /* management rx queue not empty */
+ return;
+
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ DEBUG(SHOW_TRACING, "Device going to sleep mode\n");
+#endif
+
+ /* all queues are empty, allow the device to go into sleep mode */
+ *powerstate = ISL38XX_PSM_POWERSAVE_STATE;
+
+ /* assert the Sleep interrupt in the Device Interrupt Register */
+ isl38xx_w32_flush(device_base, ISL38XX_DEV_INT_SLEEP,
+ ISL38XX_DEV_INT_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+}
+
+void
+isl38xx_handle_wakeup(isl38xx_control_block *control_block,
+ int *powerstate, void __iomem *device_base)
+{
+ /* device is in active state, update the powerstate flag */
+ *powerstate = ISL38XX_PSM_ACTIVE_STATE;
+
+ /* now check whether there are frames pending for the card */
+ if (!isl38xx_in_queue(control_block, ISL38XX_CB_TX_DATA_LQ)
+ && !isl38xx_in_queue(control_block, ISL38XX_CB_TX_MGMTQ))
+ return;
+
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ DEBUG(SHOW_ANYTHING, "Wake up handler trigger the device\n");
+#endif
+
+ /* either data or management transmit queue has a frame pending
+ * trigger the device by setting the Update bit in the Device Int reg */
+ isl38xx_w32_flush(device_base, ISL38XX_DEV_INT_UPDATE,
+ ISL38XX_DEV_INT_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+}
+
+void
+isl38xx_trigger_device(int asleep, void __iomem *device_base)
+{
+ struct timeval current_time;
+ u32 reg, counter = 0;
+
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ DEBUG(SHOW_FUNCTION_CALLS, "isl38xx trigger device\n");
+#endif
+
+ /* check whether the device is in power save mode */
+ if (asleep) {
+ /* device is in powersave, trigger the device for wakeup */
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ do_gettimeofday(¤t_time);
+ DEBUG(SHOW_TRACING, "%08li.%08li Device wakeup triggered\n",
+ current_time.tv_sec, (long)current_time.tv_usec);
+#endif
+
+ DEBUG(SHOW_TRACING, "%08li.%08li Device register read %08x\n",
+ current_time.tv_sec, (long)current_time.tv_usec,
+ readl(device_base + ISL38XX_CTRL_STAT_REG));
+ udelay(ISL38XX_WRITEIO_DELAY);
+
+ reg = readl(device_base + ISL38XX_INT_IDENT_REG);
+ if (reg == 0xabadface) {
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ do_gettimeofday(¤t_time);
+ DEBUG(SHOW_TRACING,
+ "%08li.%08li Device register abadface\n",
+ current_time.tv_sec, (long)current_time.tv_usec);
+#endif
+ /* read the Device Status Register until Sleepmode bit is set */
+ while (reg = readl(device_base + ISL38XX_CTRL_STAT_REG),
+ (reg & ISL38XX_CTRL_STAT_SLEEPMODE) == 0) {
+ udelay(ISL38XX_WRITEIO_DELAY);
+ counter++;
+ }
+
+ DEBUG(SHOW_TRACING,
+ "%08li.%08li Device register read %08x\n",
+ current_time.tv_sec, (long)current_time.tv_usec,
+ readl(device_base + ISL38XX_CTRL_STAT_REG));
+ udelay(ISL38XX_WRITEIO_DELAY);
+
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ do_gettimeofday(¤t_time);
+ DEBUG(SHOW_TRACING,
+ "%08li.%08li Device asleep counter %i\n",
+ current_time.tv_sec, (long)current_time.tv_usec,
+ counter);
+#endif
+ }
+ /* assert the Wakeup interrupt in the Device Interrupt Register */
+ isl38xx_w32_flush(device_base, ISL38XX_DEV_INT_WAKEUP,
+ ISL38XX_DEV_INT_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+
+ /* perform another read on the Device Status Register */
+ reg = readl(device_base + ISL38XX_CTRL_STAT_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ do_gettimeofday(¤t_time);
+ DEBUG(SHOW_TRACING, "%08li.%08li Device register read %08x\n",
+ current_time.tv_sec, (long)current_time.tv_usec, reg);
+#endif
+ } else {
+ /* device is (still) awake */
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ DEBUG(SHOW_TRACING, "Device is in active state\n");
+#endif
+ /* trigger the device by setting the Update bit in the Device Int reg */
+
+ isl38xx_w32_flush(device_base, ISL38XX_DEV_INT_UPDATE,
+ ISL38XX_DEV_INT_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+ }
+}
+
+void
+isl38xx_interface_reset(void __iomem *device_base, dma_addr_t host_address)
+{
+#if VERBOSE > SHOW_ERROR_MESSAGES
+ DEBUG(SHOW_FUNCTION_CALLS, "isl38xx_interface_reset\n");
+#endif
+
+ /* load the address of the control block in the device */
+ isl38xx_w32_flush(device_base, host_address, ISL38XX_CTRL_BLK_BASE_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+
+ /* set the reset bit in the Device Interrupt Register */
+ isl38xx_w32_flush(device_base, ISL38XX_DEV_INT_RESET, ISL38XX_DEV_INT_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+
+ /* enable the interrupt for detecting initialization */
+
+ /* Note: Do not enable other interrupts here. We want the
+ * device to have come up first 100% before allowing any other
+ * interrupts. */
+ isl38xx_w32_flush(device_base, ISL38XX_INT_IDENT_INIT, ISL38XX_INT_EN_REG);
+ udelay(ISL38XX_WRITEIO_DELAY); /* allow complete full reset */
+}
+
+void
+isl38xx_enable_common_interrupts(void __iomem *device_base) {
+ u32 reg;
+ reg = ( ISL38XX_INT_IDENT_UPDATE |
+ ISL38XX_INT_IDENT_SLEEP | ISL38XX_INT_IDENT_WAKEUP);
+ isl38xx_w32_flush(device_base, reg, ISL38XX_INT_EN_REG);
+ udelay(ISL38XX_WRITEIO_DELAY);
+}
+
+int
+isl38xx_in_queue(isl38xx_control_block *cb, int queue)
+{
+ const s32 delta = (le32_to_cpu(cb->driver_curr_frag[queue]) -
+ le32_to_cpu(cb->device_curr_frag[queue]));
+
+ /* determine the amount of fragments in the queue depending on the type
+ * of the queue, either transmit or receive */
+
+ BUG_ON(delta < 0); /* driver ptr must be ahead of device ptr */
+
+ switch (queue) {
+ /* send queues */
+ case ISL38XX_CB_TX_MGMTQ:
+ BUG_ON(delta > ISL38XX_CB_MGMT_QSIZE);
+ case ISL38XX_CB_TX_DATA_LQ:
+ case ISL38XX_CB_TX_DATA_HQ:
+ BUG_ON(delta > ISL38XX_CB_TX_QSIZE);
+ return delta;
+ break;
+
+ /* receive queues */
+ case ISL38XX_CB_RX_MGMTQ:
+ BUG_ON(delta > ISL38XX_CB_MGMT_QSIZE);
+ return ISL38XX_CB_MGMT_QSIZE - delta;
+ break;
+
+ case ISL38XX_CB_RX_DATA_LQ:
+ case ISL38XX_CB_RX_DATA_HQ:
+ BUG_ON(delta > ISL38XX_CB_RX_QSIZE);
+ return ISL38XX_CB_RX_QSIZE - delta;
+ break;
+ }
+ BUG();
+ return 0;
+}