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

Conflicts:
	arch/sh/kernel/vmlinux.lds.S

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 00000000000..8228ef474a7
--- /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;
+}