diff options
Diffstat (limited to 'drivers/net/wireless/intersil/prism54/isl_38xx.c')
| -rw-r--r-- | drivers/net/wireless/intersil/prism54/isl_38xx.c | 245 |
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(¤t_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(¤t_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(¤t_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(¤t_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; -} |