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path: root/drivers/net/wireless/intersil/prism54/isl_38xx.c
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Diffstat (limited to 'drivers/net/wireless/intersil/prism54/isl_38xx.c')
-rw-r--r--drivers/net/wireless/intersil/prism54/isl_38xx.c245
1 files changed, 0 insertions, 245 deletions
diff --git a/drivers/net/wireless/intersil/prism54/isl_38xx.c b/drivers/net/wireless/intersil/prism54/isl_38xx.c
deleted file mode 100644
index ae964de347f7..000000000000
--- a/drivers/net/wireless/intersil/prism54/isl_38xx.c
+++ /dev/null
@@ -1,245 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2002 Intersil Americas Inc.
- * Copyright (C) 2003-2004 Luis R. Rodriguez <mcgrof@ruslug.rutgers.edu>_
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/ktime.h>
-
-#include <linux/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 timespec64 current_ts64;
- 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
- ktime_get_real_ts64(&current_ts64);
- DEBUG(SHOW_TRACING, "%lld.%09ld Device wakeup triggered\n",
- (s64)current_ts64.tv_sec, current_ts64.tv_nsec);
-
- DEBUG(SHOW_TRACING, "%lld.%09ld Device register read %08x\n",
- (s64)current_ts64.tv_sec, current_ts64.tv_nsec,
- readl(device_base + ISL38XX_CTRL_STAT_REG));
-#endif
-
- reg = readl(device_base + ISL38XX_INT_IDENT_REG);
- if (reg == 0xabadface) {
-#if VERBOSE > SHOW_ERROR_MESSAGES
- ktime_get_real_ts64(&current_ts64);
- DEBUG(SHOW_TRACING,
- "%lld.%09ld Device register abadface\n",
- (s64)current_ts64.tv_sec, current_ts64.tv_nsec);
-#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,
- "%lld.%09ld Device register read %08x\n",
- (s64)current_ts64.tv_sec, current_ts64.tv_nsec,
- readl(device_base + ISL38XX_CTRL_STAT_REG));
- ktime_get_real_ts64(&current_ts64);
- DEBUG(SHOW_TRACING,
- "%lld.%09ld Device asleep counter %i\n",
- (s64)current_ts64.tv_sec, current_ts64.tv_nsec,
- 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);
- ktime_get_real_ts64(&current_ts64);
- DEBUG(SHOW_TRACING, "%lld.%00ld Device register read %08x\n",
- (s64)current_ts64.tv_sec, current_ts64.tv_nsec, 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);
- fallthrough;
-
- 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;
-}