mirror of
https://github.com/adulau/aha.git
synced 2024-12-30 20:56:23 +00:00
93b2dd1204
NET: prism54 - whitespace cleanup Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
256 lines
7.9 KiB
C
256 lines
7.9 KiB
C
/*
|
|
* 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/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)
|
|
{
|
|
u32 reg;
|
|
|
|
#if VERBOSE > SHOW_ERROR_MESSAGES
|
|
u32 counter = 0;
|
|
struct timeval current_time;
|
|
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);
|
|
|
|
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));
|
|
#endif
|
|
|
|
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);
|
|
#if VERBOSE > SHOW_ERROR_MESSAGES
|
|
counter++;
|
|
#endif
|
|
}
|
|
|
|
#if VERBOSE > SHOW_ERROR_MESSAGES
|
|
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));
|
|
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);
|
|
|
|
#if VERBOSE > SHOW_ERROR_MESSAGES
|
|
udelay(ISL38XX_WRITEIO_DELAY);
|
|
|
|
/* perform another read on the Device Status Register */
|
|
reg = readl(device_base + ISL38XX_CTRL_STAT_REG);
|
|
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);
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
/* receive queues */
|
|
case ISL38XX_CB_RX_MGMTQ:
|
|
BUG_ON(delta > ISL38XX_CB_MGMT_QSIZE);
|
|
return ISL38XX_CB_MGMT_QSIZE - delta;
|
|
|
|
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;
|
|
}
|
|
BUG();
|
|
return 0;
|
|
}
|