Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6

1 files changed, 541 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.c b/drivers/net/wireless/wl12xx/wl1271_boot.c
new file mode 100644
index 000000000000..8228ef474a7e
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1271_boot.c
@@ -0,0 +1,541 @@
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Contact: Luciano Coelho <luciano.coelho@nokia.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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/gpio.h>
+
+#include "wl1271_acx.h"
+#include "wl1271_reg.h"
+#include "wl1271_boot.h"
+#include "wl1271_spi.h"
+#include "wl1271_event.h"
+
+static struct wl1271_partition_set part_table[PART_TABLE_LEN] = {
+        [PART_DOWN] = {
+                .mem = {
+                        .start = 0x00000000,
+                        .size  = 0x000177c0
+                },
+                .reg = {
+                        .start = REGISTERS_BASE,
+                        .size  = 0x00008800
+                },
+        },
+
+        [PART_WORK] = {
+                .mem = {
+                        .start = 0x00040000,
+                        .size  = 0x00014fc0
+                },
+                .reg = {
+                        .start = REGISTERS_BASE,
+                        .size  = 0x0000b000
+                },
+        },
+
+        [PART_DRPW] = {
+                .mem = {
+                        .start = 0x00040000,
+                        .size  = 0x00014fc0
+                },
+                .reg = {
+                        .start = DRPW_BASE,
+                        .size  = 0x00006000
+                }
+        }
+};
+
+static void wl1271_boot_set_ecpu_ctrl(struct wl1271 *wl, u32 flag)
+{
+        u32 cpu_ctrl;
+
+        /* 10.5.0 run the firmware (I) */
+        cpu_ctrl = wl1271_reg_read32(wl, ACX_REG_ECPU_CONTROL);
+
+        /* 10.5.1 run the firmware (II) */
+        cpu_ctrl |= flag;
+        wl1271_reg_write32(wl, ACX_REG_ECPU_CONTROL, cpu_ctrl);
+}
+
+static void wl1271_boot_fw_version(struct wl1271 *wl)
+{
+        struct wl1271_static_data static_data;
+
+        wl1271_spi_mem_read(wl, wl->cmd_box_addr,
+                            &static_data, sizeof(static_data));
+
+        strncpy(wl->chip.fw_ver, static_data.fw_version,
+                sizeof(wl->chip.fw_ver));
+
+        /* make sure the string is NULL-terminated */
+        wl->chip.fw_ver[sizeof(wl->chip.fw_ver) - 1] = '\0';
+}
+
+static int wl1271_boot_upload_firmware_chunk(struct wl1271 *wl, void *buf,
+                                             size_t fw_data_len, u32 dest)
+{
+        int addr, chunk_num, partition_limit;
+        u8 *p;
+
+        /* whal_FwCtrl_LoadFwImageSm() */
+
+        wl1271_debug(DEBUG_BOOT, "starting firmware upload");
+
+        wl1271_debug(DEBUG_BOOT, "fw_data_len %zd chunk_size %d",
+                     fw_data_len, CHUNK_SIZE);
+
+
+        if ((fw_data_len % 4) != 0) {
+                wl1271_error("firmware length not multiple of four");
+                return -EIO;
+        }
+
+        wl1271_set_partition(wl, dest,
+                             part_table[PART_DOWN].mem.size,
+                             part_table[PART_DOWN].reg.start,
+                             part_table[PART_DOWN].reg.size);
+
+        /* 10.1 set partition limit and chunk num */
+        chunk_num = 0;
+        partition_limit = part_table[PART_DOWN].mem.size;
+
+        while (chunk_num < fw_data_len / CHUNK_SIZE) {
+                /* 10.2 update partition, if needed */
+                addr = dest + (chunk_num + 2) * CHUNK_SIZE;
+                if (addr > partition_limit) {
+                        addr = dest + chunk_num * CHUNK_SIZE;
+                        partition_limit = chunk_num * CHUNK_SIZE +
+                                part_table[PART_DOWN].mem.size;
+
+                        /* FIXME: Over 80 chars! */
+                        wl1271_set_partition(wl,
+                                             addr,
+                                             part_table[PART_DOWN].mem.size,
+                                             part_table[PART_DOWN].reg.start,
+                                             part_table[PART_DOWN].reg.size);
+                }
+
+                /* 10.3 upload the chunk */
+                addr = dest + chunk_num * CHUNK_SIZE;
+                p = buf + chunk_num * CHUNK_SIZE;
+                wl1271_debug(DEBUG_BOOT, "uploading fw chunk 0x%p to 0x%x",
+                             p, addr);
+                wl1271_spi_mem_write(wl, addr, p, CHUNK_SIZE);
+
+                chunk_num++;
+        }
+
+        /* 10.4 upload the last chunk */
+        addr = dest + chunk_num * CHUNK_SIZE;
+        p = buf + chunk_num * CHUNK_SIZE;
+        wl1271_debug(DEBUG_BOOT, "uploading fw last chunk (%zd B) 0x%p to 0x%x",
+                     fw_data_len % CHUNK_SIZE, p, addr);
+        wl1271_spi_mem_write(wl, addr, p, fw_data_len % CHUNK_SIZE);
+
+        return 0;
+}
+
+static int wl1271_boot_upload_firmware(struct wl1271 *wl)
+{
+        u32 chunks, addr, len;
+        u8 *fw;
+
+        fw = wl->fw;
+        chunks = be32_to_cpup((u32 *) fw);
+        fw += sizeof(u32);
+
+        wl1271_debug(DEBUG_BOOT, "firmware chunks to be uploaded: %u", chunks);
+
+        while (chunks--) {
+                addr = be32_to_cpup((u32 *) fw);
+                fw += sizeof(u32);
+                len = be32_to_cpup((u32 *) fw);
+                fw += sizeof(u32);
+
+                if (len > 300000) {
+                        wl1271_info("firmware chunk too long: %u", len);
+                        return -EINVAL;
+                }
+                wl1271_debug(DEBUG_BOOT, "chunk %d addr 0x%x len %u",
+                             chunks, addr, len);
+                wl1271_boot_upload_firmware_chunk(wl, fw, len, addr);
+                fw += len;
+        }
+
+        return 0;
+}
+
+static int wl1271_boot_upload_nvs(struct wl1271 *wl)
+{
+        size_t nvs_len, burst_len;
+        int i;
+        u32 dest_addr, val;
+        u8 *nvs_ptr, *nvs, *nvs_aligned;
+
+        nvs = wl->nvs;
+        if (nvs == NULL)
+                return -ENODEV;
+
+        nvs_ptr = nvs;
+
+        nvs_len = wl->nvs_len;
+
+        /* Update the device MAC address into the nvs */
+        nvs[11] = wl->mac_addr[0];
+        nvs[10] = wl->mac_addr[1];
+        nvs[6] = wl->mac_addr[2];
+        nvs[5] = wl->mac_addr[3];
+        nvs[4] = wl->mac_addr[4];
+        nvs[3] = wl->mac_addr[5];
+
+        /*
+         * Layout before the actual NVS tables:
+         * 1 byte : burst length.
+         * 2 bytes: destination address.
+         * n bytes: data to burst copy.
+         *
+         * This is ended by a 0 length, then the NVS tables.
+         */
+
+        /* FIXME: Do we need to check here whether the LSB is 1? */
+        while (nvs_ptr[0]) {
+                burst_len = nvs_ptr[0];
+                dest_addr = (nvs_ptr[1] & 0xfe) | ((u32)(nvs_ptr[2] << 8));
+
+                /* FIXME: Due to our new wl1271_translate_reg_addr function,
+                   we need to add the REGISTER_BASE to the destination */
+                dest_addr += REGISTERS_BASE;
+
+                /* We move our pointer to the data */
+                nvs_ptr += 3;
+
+                for (i = 0; i < burst_len; i++) {
+                        val = (nvs_ptr[0] | (nvs_ptr[1] << 8)
+                               | (nvs_ptr[2] << 16) | (nvs_ptr[3] << 24));
+
+                        wl1271_debug(DEBUG_BOOT,
+                                     "nvs burst write 0x%x: 0x%x",
+                                     dest_addr, val);
+                        wl1271_reg_write32(wl, dest_addr, val);
+
+                        nvs_ptr += 4;
+                        dest_addr += 4;
+                }
+        }
+
+        /*
+         * We've reached the first zero length, the first NVS table
+         * is 7 bytes further.
+         */
+        nvs_ptr += 7;
+        nvs_len -= nvs_ptr - nvs;
+        nvs_len = ALIGN(nvs_len, 4);
+
+        /* FIXME: The driver sets the partition here, but this is not needed,
+           since it sets to the same one as currently in use */
+        /* Now we must set the partition correctly */
+        wl1271_set_partition(wl,
+                             part_table[PART_WORK].mem.start,
+                             part_table[PART_WORK].mem.size,
+                             part_table[PART_WORK].reg.start,
+                             part_table[PART_WORK].reg.size);
+
+        /* Copy the NVS tables to a new block to ensure alignment */
+        nvs_aligned = kmemdup(nvs_ptr, nvs_len, GFP_KERNEL);
+
+        /* And finally we upload the NVS tables */
+        /* FIXME: In wl1271, we upload everything at once.
+           No endianness handling needed here?! The ref driver doesn't do
+           anything about it at this point */
+        wl1271_spi_mem_write(wl, CMD_MBOX_ADDRESS, nvs_aligned, nvs_len);
+
+        kfree(nvs_aligned);
+        return 0;
+}
+
+static void wl1271_boot_enable_interrupts(struct wl1271 *wl)
+{
+        enable_irq(wl->irq);
+        wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
+                           WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
+        wl1271_reg_write32(wl, HI_CFG, HI_CFG_DEF_VAL);
+}
+
+static int wl1271_boot_soft_reset(struct wl1271 *wl)
+{
+        unsigned long timeout;
+        u32 boot_data;
+
+        /* perform soft reset */
+        wl1271_reg_write32(wl, ACX_REG_SLV_SOFT_RESET, ACX_SLV_SOFT_RESET_BIT);
+
+        /* SOFT_RESET is self clearing */
+        timeout = jiffies + usecs_to_jiffies(SOFT_RESET_MAX_TIME);
+        while (1) {
+                boot_data = wl1271_reg_read32(wl, ACX_REG_SLV_SOFT_RESET);
+                wl1271_debug(DEBUG_BOOT, "soft reset bootdata 0x%x", boot_data);
+                if ((boot_data & ACX_SLV_SOFT_RESET_BIT) == 0)
+                        break;
+
+                if (time_after(jiffies, timeout)) {
+                        /* 1.2 check pWhalBus->uSelfClearTime if the
+                         * timeout was reached */
+                        wl1271_error("soft reset timeout");
+                        return -1;
+                }
+
+                udelay(SOFT_RESET_STALL_TIME);
+        }
+
+        /* disable Rx/Tx */
+        wl1271_reg_write32(wl, ENABLE, 0x0);
+
+        /* disable auto calibration on start*/
+        wl1271_reg_write32(wl, SPARE_A2, 0xffff);
+
+        return 0;
+}
+
+static int wl1271_boot_run_firmware(struct wl1271 *wl)
+{
+        int loop, ret;
+        u32 chip_id, interrupt;
+
+        wl1271_boot_set_ecpu_ctrl(wl, ECPU_CONTROL_HALT);
+
+        chip_id = wl1271_reg_read32(wl, CHIP_ID_B);
+
+        wl1271_debug(DEBUG_BOOT, "chip id after firmware boot: 0x%x", chip_id);
+
+        if (chip_id != wl->chip.id) {
+                wl1271_error("chip id doesn't match after firmware boot");
+                return -EIO;
+        }
+
+        /* wait for init to complete */
+        loop = 0;
+        while (loop++ < INIT_LOOP) {
+                udelay(INIT_LOOP_DELAY);
+                interrupt = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
+
+                if (interrupt == 0xffffffff) {
+                        wl1271_error("error reading hardware complete "
+                                     "init indication");
+                        return -EIO;
+                }
+                /* check that ACX_INTR_INIT_COMPLETE is enabled */
+                else if (interrupt & WL1271_ACX_INTR_INIT_COMPLETE) {
+                        wl1271_reg_write32(wl, ACX_REG_INTERRUPT_ACK,
+                                           WL1271_ACX_INTR_INIT_COMPLETE);
+                        break;
+                }
+        }
+
+        if (loop >= INIT_LOOP) {
+                wl1271_error("timeout waiting for the hardware to "
+                             "complete initialization");
+                return -EIO;
+        }
+
+        /* get hardware config command mail box */
+        wl->cmd_box_addr = wl1271_reg_read32(wl, REG_COMMAND_MAILBOX_PTR);
+
+        /* get hardware config event mail box */
+        wl->event_box_addr = wl1271_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
+
+        /* set the working partition to its "running" mode offset */
+        wl1271_set_partition(wl,
+                             part_table[PART_WORK].mem.start,
+                             part_table[PART_WORK].mem.size,
+                             part_table[PART_WORK].reg.start,
+                             part_table[PART_WORK].reg.size);
+
+        wl1271_debug(DEBUG_MAILBOX, "cmd_box_addr 0x%x event_box_addr 0x%x",
+                     wl->cmd_box_addr, wl->event_box_addr);
+
+        wl1271_boot_fw_version(wl);
+
+        /*
+         * in case of full asynchronous mode the firmware event must be
+         * ready to receive event from the command mailbox
+         */
+
+        /* enable gpio interrupts */
+        wl1271_boot_enable_interrupts(wl);
+
+        /* unmask all mbox events  */
+        wl->event_mask = 0xffffffff;
+
+        ret = wl1271_event_unmask(wl);
+        if (ret < 0) {
+                wl1271_error("EVENT mask setting failed");
+                return ret;
+        }
+
+        wl1271_event_mbox_config(wl);
+
+        /* firmware startup completed */
+        return 0;
+}
+
+static int wl1271_boot_write_irq_polarity(struct wl1271 *wl)
+{
+        u32 polarity, status, i;
+
+        wl1271_reg_write32(wl, OCP_POR_CTR, OCP_REG_POLARITY);
+        wl1271_reg_write32(wl, OCP_CMD, OCP_CMD_READ);
+
+        /* Wait until the command is complete (ie. bit 18 is set) */
+        for (i = 0; i < OCP_CMD_LOOP; i++) {
+                polarity = wl1271_reg_read32(wl, OCP_DATA_READ);
+                if (polarity & OCP_READY_MASK)
+                        break;
+        }
+        if (i == OCP_CMD_LOOP) {
+                wl1271_error("OCP command timeout!");
+                return -EIO;
+        }
+
+        status = polarity & OCP_STATUS_MASK;
+        if (status != OCP_STATUS_OK) {
+                wl1271_error("OCP command failed (%d)", status);
+                return -EIO;
+        }
+
+        /* We use HIGH polarity, so unset the LOW bit */
+        polarity &= ~POLARITY_LOW;
+
+        wl1271_reg_write32(wl, OCP_POR_CTR, OCP_REG_POLARITY);
+        wl1271_reg_write32(wl, OCP_DATA_WRITE, polarity);
+        wl1271_reg_write32(wl, OCP_CMD, OCP_CMD_WRITE);
+
+        return 0;
+}
+
+int wl1271_boot(struct wl1271 *wl)
+{
+        int ret = 0;
+        u32 tmp, clk, pause;
+
+        if (REF_CLOCK == 0 || REF_CLOCK == 2)
+                /* ref clk: 19.2/38.4 */
+                clk = 0x3;
+        else if (REF_CLOCK == 1 || REF_CLOCK == 3)
+                /* ref clk: 26/52 */
+                clk = 0x5;
+
+        wl1271_reg_write32(wl, PLL_PARAMETERS, clk);
+
+        pause = wl1271_reg_read32(wl, PLL_PARAMETERS);
+
+        wl1271_debug(DEBUG_BOOT, "pause1 0x%x", pause);
+
+        pause &= ~(WU_COUNTER_PAUSE_VAL); /* FIXME: This should probably be
+                                           * WU_COUNTER_PAUSE_VAL instead of
+                                           * 0x3ff (magic number ).  How does
+                                           * this work?! */
+        pause |= WU_COUNTER_PAUSE_VAL;
+        wl1271_reg_write32(wl, WU_COUNTER_PAUSE, pause);
+
+        /* Continue the ELP wake up sequence */
+        wl1271_reg_write32(wl, WELP_ARM_COMMAND, WELP_ARM_COMMAND_VAL);
+        udelay(500);
+
+        wl1271_set_partition(wl,
+                             part_table[PART_DRPW].mem.start,
+                             part_table[PART_DRPW].mem.size,
+                             part_table[PART_DRPW].reg.start,
+                             part_table[PART_DRPW].reg.size);
+
+        /* Read-modify-write DRPW_SCRATCH_START register (see next state)
+           to be used by DRPw FW. The RTRIM value will be added by the FW
+           before taking DRPw out of reset */
+
+        wl1271_debug(DEBUG_BOOT, "DRPW_SCRATCH_START %08x", DRPW_SCRATCH_START);
+        clk = wl1271_reg_read32(wl, DRPW_SCRATCH_START);
+
+        wl1271_debug(DEBUG_BOOT, "clk2 0x%x", clk);
+
+        /* 2 */
+        clk |= (REF_CLOCK << 1) << 4;
+        wl1271_reg_write32(wl, DRPW_SCRATCH_START, clk);
+
+        wl1271_set_partition(wl,
+                             part_table[PART_WORK].mem.start,
+                             part_table[PART_WORK].mem.size,
+                             part_table[PART_WORK].reg.start,
+                             part_table[PART_WORK].reg.size);
+
+        /* Disable interrupts */
+        wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
+
+        ret = wl1271_boot_soft_reset(wl);
+        if (ret < 0)
+                goto out;
+
+        /* 2. start processing NVS file */
+        ret = wl1271_boot_upload_nvs(wl);
+        if (ret < 0)
+                goto out;
+
+        /* write firmware's last address (ie. it's length) to
+         * ACX_EEPROMLESS_IND_REG */
+        wl1271_debug(DEBUG_BOOT, "ACX_EEPROMLESS_IND_REG");
+
+        wl1271_reg_write32(wl, ACX_EEPROMLESS_IND_REG, ACX_EEPROMLESS_IND_REG);
+
+        tmp = wl1271_reg_read32(wl, CHIP_ID_B);
+
+        wl1271_debug(DEBUG_BOOT, "chip id 0x%x", tmp);
+
+        /* 6. read the EEPROM parameters */
+        tmp = wl1271_reg_read32(wl, SCR_PAD2);
+
+        ret = wl1271_boot_write_irq_polarity(wl);
+        if (ret < 0)
+                goto out;
+
+        /* FIXME: Need to check whether this is really what we want */
+        wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
+                           WL1271_ACX_ALL_EVENTS_VECTOR);
+
+        /* WL1271: The reference driver skips steps 7 to 10 (jumps directly
+         * to upload_fw) */
+
+        ret = wl1271_boot_upload_firmware(wl);
+        if (ret < 0)
+                goto out;
+
+        /* 10.5 start firmware */
+        ret = wl1271_boot_run_firmware(wl);
+        if (ret < 0)
+                goto out;
+
+        /* set the wl1271 default filters */
+        wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
+        wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
+
+        wl1271_event_mbox_config(wl);
+
+out:
+        return ret;
+}