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path: root/drivers/net/wireless/cw1200/fwio.c
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Diffstat (limited to 'drivers/net/wireless/cw1200/fwio.c')
-rw-r--r--drivers/net/wireless/cw1200/fwio.c526
1 files changed, 0 insertions, 526 deletions
diff --git a/drivers/net/wireless/cw1200/fwio.c b/drivers/net/wireless/cw1200/fwio.c
deleted file mode 100644
index 771bb68c3..000000000
--- a/drivers/net/wireless/cw1200/fwio.c
+++ /dev/null
@@ -1,526 +0,0 @@
-/*
- * Firmware I/O code for mac80211 ST-Ericsson CW1200 drivers
- *
- * Copyright (c) 2010, ST-Ericsson
- * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
- *
- * Based on:
- * ST-Ericsson UMAC CW1200 driver which is
- * Copyright (c) 2010, ST-Ericsson
- * Author: Ajitpal Singh <ajitpal.singh@stericsson.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/firmware.h>
-
-#include "cw1200.h"
-#include "fwio.h"
-#include "hwio.h"
-#include "hwbus.h"
-#include "bh.h"
-
-static int cw1200_get_hw_type(u32 config_reg_val, int *major_revision)
-{
- int hw_type = -1;
- u32 silicon_type = (config_reg_val >> 24) & 0x7;
- u32 silicon_vers = (config_reg_val >> 31) & 0x1;
-
- switch (silicon_type) {
- case 0x00:
- *major_revision = 1;
- hw_type = HIF_9000_SILICON_VERSATILE;
- break;
- case 0x01:
- case 0x02: /* CW1x00 */
- case 0x04: /* CW1x60 */
- *major_revision = silicon_type;
- if (silicon_vers)
- hw_type = HIF_8601_VERSATILE;
- else
- hw_type = HIF_8601_SILICON;
- break;
- default:
- break;
- }
-
- return hw_type;
-}
-
-static int cw1200_load_firmware_cw1200(struct cw1200_common *priv)
-{
- int ret, block, num_blocks;
- unsigned i;
- u32 val32;
- u32 put = 0, get = 0;
- u8 *buf = NULL;
- const char *fw_path;
- const struct firmware *firmware = NULL;
-
- /* Macroses are local. */
-#define APB_WRITE(reg, val) \
- do { \
- ret = cw1200_apb_write_32(priv, CW1200_APB(reg), (val)); \
- if (ret < 0) \
- goto exit; \
- } while (0)
-#define APB_WRITE2(reg, val) \
- do { \
- ret = cw1200_apb_write_32(priv, CW1200_APB(reg), (val)); \
- if (ret < 0) \
- goto free_buffer; \
- } while (0)
-#define APB_READ(reg, val) \
- do { \
- ret = cw1200_apb_read_32(priv, CW1200_APB(reg), &(val)); \
- if (ret < 0) \
- goto free_buffer; \
- } while (0)
-#define REG_WRITE(reg, val) \
- do { \
- ret = cw1200_reg_write_32(priv, (reg), (val)); \
- if (ret < 0) \
- goto exit; \
- } while (0)
-#define REG_READ(reg, val) \
- do { \
- ret = cw1200_reg_read_32(priv, (reg), &(val)); \
- if (ret < 0) \
- goto exit; \
- } while (0)
-
- switch (priv->hw_revision) {
- case CW1200_HW_REV_CUT10:
- fw_path = FIRMWARE_CUT10;
- if (!priv->sdd_path)
- priv->sdd_path = SDD_FILE_10;
- break;
- case CW1200_HW_REV_CUT11:
- fw_path = FIRMWARE_CUT11;
- if (!priv->sdd_path)
- priv->sdd_path = SDD_FILE_11;
- break;
- case CW1200_HW_REV_CUT20:
- fw_path = FIRMWARE_CUT20;
- if (!priv->sdd_path)
- priv->sdd_path = SDD_FILE_20;
- break;
- case CW1200_HW_REV_CUT22:
- fw_path = FIRMWARE_CUT22;
- if (!priv->sdd_path)
- priv->sdd_path = SDD_FILE_22;
- break;
- case CW1X60_HW_REV:
- fw_path = FIRMWARE_CW1X60;
- if (!priv->sdd_path)
- priv->sdd_path = SDD_FILE_CW1X60;
- break;
- default:
- pr_err("Invalid silicon revision %d.\n", priv->hw_revision);
- return -EINVAL;
- }
-
- /* Initialize common registers */
- APB_WRITE(DOWNLOAD_IMAGE_SIZE_REG, DOWNLOAD_ARE_YOU_HERE);
- APB_WRITE(DOWNLOAD_PUT_REG, 0);
- APB_WRITE(DOWNLOAD_GET_REG, 0);
- APB_WRITE(DOWNLOAD_STATUS_REG, DOWNLOAD_PENDING);
- APB_WRITE(DOWNLOAD_FLAGS_REG, 0);
-
- /* Write the NOP Instruction */
- REG_WRITE(ST90TDS_SRAM_BASE_ADDR_REG_ID, 0xFFF20000);
- REG_WRITE(ST90TDS_AHB_DPORT_REG_ID, 0xEAFFFFFE);
-
- /* Release CPU from RESET */
- REG_READ(ST90TDS_CONFIG_REG_ID, val32);
- val32 &= ~ST90TDS_CONFIG_CPU_RESET_BIT;
- REG_WRITE(ST90TDS_CONFIG_REG_ID, val32);
-
- /* Enable Clock */
- val32 &= ~ST90TDS_CONFIG_CPU_CLK_DIS_BIT;
- REG_WRITE(ST90TDS_CONFIG_REG_ID, val32);
-
- /* Load a firmware file */
- ret = reject_firmware(&firmware, fw_path, priv->pdev);
- if (ret) {
- pr_err("Can't load firmware file %s.\n", fw_path);
- goto exit;
- }
-
- buf = kmalloc(DOWNLOAD_BLOCK_SIZE, GFP_KERNEL | GFP_DMA);
- if (!buf) {
- pr_err("Can't allocate firmware load buffer.\n");
- ret = -ENOMEM;
- goto firmware_release;
- }
-
- /* Check if the bootloader is ready */
- for (i = 0; i < 100; i += 1 + i / 2) {
- APB_READ(DOWNLOAD_IMAGE_SIZE_REG, val32);
- if (val32 == DOWNLOAD_I_AM_HERE)
- break;
- mdelay(i);
- } /* End of for loop */
-
- if (val32 != DOWNLOAD_I_AM_HERE) {
- pr_err("Bootloader is not ready.\n");
- ret = -ETIMEDOUT;
- goto free_buffer;
- }
-
- /* Calculcate number of download blocks */
- num_blocks = (firmware->size - 1) / DOWNLOAD_BLOCK_SIZE + 1;
-
- /* Updating the length in Download Ctrl Area */
- val32 = firmware->size; /* Explicit cast from size_t to u32 */
- APB_WRITE2(DOWNLOAD_IMAGE_SIZE_REG, val32);
-
- /* Firmware downloading loop */
- for (block = 0; block < num_blocks; block++) {
- size_t tx_size;
- size_t block_size;
-
- /* check the download status */
- APB_READ(DOWNLOAD_STATUS_REG, val32);
- if (val32 != DOWNLOAD_PENDING) {
- pr_err("Bootloader reported error %d.\n", val32);
- ret = -EIO;
- goto free_buffer;
- }
-
- /* loop until put - get <= 24K */
- for (i = 0; i < 100; i++) {
- APB_READ(DOWNLOAD_GET_REG, get);
- if ((put - get) <=
- (DOWNLOAD_FIFO_SIZE - DOWNLOAD_BLOCK_SIZE))
- break;
- mdelay(i);
- }
-
- if ((put - get) > (DOWNLOAD_FIFO_SIZE - DOWNLOAD_BLOCK_SIZE)) {
- pr_err("Timeout waiting for FIFO.\n");
- ret = -ETIMEDOUT;
- goto free_buffer;
- }
-
- /* calculate the block size */
- tx_size = block_size = min_t(size_t, firmware->size - put,
- DOWNLOAD_BLOCK_SIZE);
-
- memcpy(buf, &firmware->data[put], block_size);
- if (block_size < DOWNLOAD_BLOCK_SIZE) {
- memset(&buf[block_size], 0,
- DOWNLOAD_BLOCK_SIZE - block_size);
- tx_size = DOWNLOAD_BLOCK_SIZE;
- }
-
- /* send the block to sram */
- ret = cw1200_apb_write(priv,
- CW1200_APB(DOWNLOAD_FIFO_OFFSET +
- (put & (DOWNLOAD_FIFO_SIZE - 1))),
- buf, tx_size);
- if (ret < 0) {
- pr_err("Can't write firmware block @ %d!\n",
- put & (DOWNLOAD_FIFO_SIZE - 1));
- goto free_buffer;
- }
-
- /* update the put register */
- put += block_size;
- APB_WRITE2(DOWNLOAD_PUT_REG, put);
- } /* End of firmware download loop */
-
- /* Wait for the download completion */
- for (i = 0; i < 300; i += 1 + i / 2) {
- APB_READ(DOWNLOAD_STATUS_REG, val32);
- if (val32 != DOWNLOAD_PENDING)
- break;
- mdelay(i);
- }
- if (val32 != DOWNLOAD_SUCCESS) {
- pr_err("Wait for download completion failed: 0x%.8X\n", val32);
- ret = -ETIMEDOUT;
- goto free_buffer;
- } else {
- pr_info("Firmware download completed.\n");
- ret = 0;
- }
-
-free_buffer:
- kfree(buf);
-firmware_release:
- release_firmware(firmware);
-exit:
- return ret;
-
-#undef APB_WRITE
-#undef APB_WRITE2
-#undef APB_READ
-#undef REG_WRITE
-#undef REG_READ
-}
-
-
-static int config_reg_read(struct cw1200_common *priv, u32 *val)
-{
- switch (priv->hw_type) {
- case HIF_9000_SILICON_VERSATILE: {
- u16 val16;
- int ret = cw1200_reg_read_16(priv,
- ST90TDS_CONFIG_REG_ID,
- &val16);
- if (ret < 0)
- return ret;
- *val = val16;
- return 0;
- }
- case HIF_8601_VERSATILE:
- case HIF_8601_SILICON:
- default:
- cw1200_reg_read_32(priv, ST90TDS_CONFIG_REG_ID, val);
- break;
- }
- return 0;
-}
-
-static int config_reg_write(struct cw1200_common *priv, u32 val)
-{
- switch (priv->hw_type) {
- case HIF_9000_SILICON_VERSATILE:
- return cw1200_reg_write_16(priv,
- ST90TDS_CONFIG_REG_ID,
- (u16)val);
- case HIF_8601_VERSATILE:
- case HIF_8601_SILICON:
- default:
- return cw1200_reg_write_32(priv, ST90TDS_CONFIG_REG_ID, val);
- }
- return 0;
-}
-
-int cw1200_load_firmware(struct cw1200_common *priv)
-{
- int ret;
- int i;
- u32 val32;
- u16 val16;
- int major_revision = -1;
-
- /* Read CONFIG Register */
- ret = cw1200_reg_read_32(priv, ST90TDS_CONFIG_REG_ID, &val32);
- if (ret < 0) {
- pr_err("Can't read config register.\n");
- goto out;
- }
-
- if (val32 == 0 || val32 == 0xffffffff) {
- pr_err("Bad config register value (0x%08x)\n", val32);
- ret = -EIO;
- goto out;
- }
-
- priv->hw_type = cw1200_get_hw_type(val32, &major_revision);
- if (priv->hw_type < 0) {
- pr_err("Can't deduce hardware type.\n");
- ret = -ENOTSUPP;
- goto out;
- }
-
- /* Set DPLL Reg value, and read back to confirm writes work */
- ret = cw1200_reg_write_32(priv, ST90TDS_TSET_GEN_R_W_REG_ID,
- cw1200_dpll_from_clk(priv->hw_refclk));
- if (ret < 0) {
- pr_err("Can't write DPLL register.\n");
- goto out;
- }
-
- msleep(20);
-
- ret = cw1200_reg_read_32(priv,
- ST90TDS_TSET_GEN_R_W_REG_ID, &val32);
- if (ret < 0) {
- pr_err("Can't read DPLL register.\n");
- goto out;
- }
-
- if (val32 != cw1200_dpll_from_clk(priv->hw_refclk)) {
- pr_err("Unable to initialise DPLL register. Wrote 0x%.8X, Read 0x%.8X.\n",
- cw1200_dpll_from_clk(priv->hw_refclk), val32);
- ret = -EIO;
- goto out;
- }
-
- /* Set wakeup bit in device */
- ret = cw1200_reg_read_16(priv, ST90TDS_CONTROL_REG_ID, &val16);
- if (ret < 0) {
- pr_err("set_wakeup: can't read control register.\n");
- goto out;
- }
-
- ret = cw1200_reg_write_16(priv, ST90TDS_CONTROL_REG_ID,
- val16 | ST90TDS_CONT_WUP_BIT);
- if (ret < 0) {
- pr_err("set_wakeup: can't write control register.\n");
- goto out;
- }
-
- /* Wait for wakeup */
- for (i = 0; i < 300; i += (1 + i / 2)) {
- ret = cw1200_reg_read_16(priv,
- ST90TDS_CONTROL_REG_ID, &val16);
- if (ret < 0) {
- pr_err("wait_for_wakeup: can't read control register.\n");
- goto out;
- }
-
- if (val16 & ST90TDS_CONT_RDY_BIT)
- break;
-
- msleep(i);
- }
-
- if ((val16 & ST90TDS_CONT_RDY_BIT) == 0) {
- pr_err("wait_for_wakeup: device is not responding.\n");
- ret = -ETIMEDOUT;
- goto out;
- }
-
- switch (major_revision) {
- case 1:
- /* CW1200 Hardware detection logic : Check for CUT1.1 */
- ret = cw1200_ahb_read_32(priv, CW1200_CUT_ID_ADDR, &val32);
- if (ret) {
- pr_err("HW detection: can't read CUT ID.\n");
- goto out;
- }
-
- switch (val32) {
- case CW1200_CUT_11_ID_STR:
- pr_info("CW1x00 Cut 1.1 silicon detected.\n");
- priv->hw_revision = CW1200_HW_REV_CUT11;
- break;
- default:
- pr_info("CW1x00 Cut 1.0 silicon detected.\n");
- priv->hw_revision = CW1200_HW_REV_CUT10;
- break;
- }
-
- /* According to ST-E, CUT<2.0 has busted BA TID0-3.
- Just disable it entirely...
- */
- priv->ba_rx_tid_mask = 0;
- priv->ba_tx_tid_mask = 0;
- break;
- case 2: {
- u32 ar1, ar2, ar3;
- ret = cw1200_ahb_read_32(priv, CW1200_CUT2_ID_ADDR, &ar1);
- if (ret) {
- pr_err("(1) HW detection: can't read CUT ID\n");
- goto out;
- }
- ret = cw1200_ahb_read_32(priv, CW1200_CUT2_ID_ADDR + 4, &ar2);
- if (ret) {
- pr_err("(2) HW detection: can't read CUT ID.\n");
- goto out;
- }
-
- ret = cw1200_ahb_read_32(priv, CW1200_CUT2_ID_ADDR + 8, &ar3);
- if (ret) {
- pr_err("(3) HW detection: can't read CUT ID.\n");
- goto out;
- }
-
- if (ar1 == CW1200_CUT_22_ID_STR1 &&
- ar2 == CW1200_CUT_22_ID_STR2 &&
- ar3 == CW1200_CUT_22_ID_STR3) {
- pr_info("CW1x00 Cut 2.2 silicon detected.\n");
- priv->hw_revision = CW1200_HW_REV_CUT22;
- } else {
- pr_info("CW1x00 Cut 2.0 silicon detected.\n");
- priv->hw_revision = CW1200_HW_REV_CUT20;
- }
- break;
- }
- case 4:
- pr_info("CW1x60 silicon detected.\n");
- priv->hw_revision = CW1X60_HW_REV;
- break;
- default:
- pr_err("Unsupported silicon major revision %d.\n",
- major_revision);
- ret = -ENOTSUPP;
- goto out;
- }
-
- /* Checking for access mode */
- ret = config_reg_read(priv, &val32);
- if (ret < 0) {
- pr_err("Can't read config register.\n");
- goto out;
- }
-
- if (!(val32 & ST90TDS_CONFIG_ACCESS_MODE_BIT)) {
- pr_err("Device is already in QUEUE mode!\n");
- ret = -EINVAL;
- goto out;
- }
-
- switch (priv->hw_type) {
- case HIF_8601_SILICON:
- if (priv->hw_revision == CW1X60_HW_REV) {
- pr_err("Can't handle CW1160/1260 firmware load yet.\n");
- ret = -ENOTSUPP;
- goto out;
- }
- ret = cw1200_load_firmware_cw1200(priv);
- break;
- default:
- pr_err("Can't perform firmware load for hw type %d.\n",
- priv->hw_type);
- ret = -ENOTSUPP;
- goto out;
- }
- if (ret < 0) {
- pr_err("Firmware load error.\n");
- goto out;
- }
-
- /* Enable interrupt signalling */
- priv->hwbus_ops->lock(priv->hwbus_priv);
- ret = __cw1200_irq_enable(priv, 1);
- priv->hwbus_ops->unlock(priv->hwbus_priv);
- if (ret < 0)
- goto unsubscribe;
-
- /* Configure device for MESSSAGE MODE */
- ret = config_reg_read(priv, &val32);
- if (ret < 0) {
- pr_err("Can't read config register.\n");
- goto unsubscribe;
- }
- ret = config_reg_write(priv, val32 & ~ST90TDS_CONFIG_ACCESS_MODE_BIT);
- if (ret < 0) {
- pr_err("Can't write config register.\n");
- goto unsubscribe;
- }
-
- /* Unless we read the CONFIG Register we are
- * not able to get an interrupt
- */
- mdelay(10);
- config_reg_read(priv, &val32);
-
-out:
- return ret;
-
-unsubscribe:
- /* Disable interrupt signalling */
- priv->hwbus_ops->lock(priv->hwbus_priv);
- ret = __cw1200_irq_enable(priv, 0);
- priv->hwbus_ops->unlock(priv->hwbus_priv);
- return ret;
-}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-09-06 01:20:16 +0000