433 lines
11 KiB
C
433 lines
11 KiB
C
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/*
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* carl9170 firmware - used by the ar9170 wireless device
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*
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* Copyright (c) 2000-2005 ZyDAS Technology Corporation
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* Copyright (c) 2007-2009 Atheros Communications, Inc.
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* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
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* Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "carl9170.h"
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#include "shared/phy.h"
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#include "hostif.h"
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#include "printf.h"
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#include "timer.h"
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#include "rom.h"
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#include "wl.h"
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#include "wol.h"
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#ifdef CONFIG_CARL9170FW_DEBUG_USB
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void usb_putc(const char c)
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{
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fw.usb.put_buffer[fw.usb.put_index++] = (uint8_t) c;
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if (fw.usb.put_index == CARL9170_MAX_CMD_PAYLOAD_LEN || c == '\0') {
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fw.usb.put_buffer[fw.usb.put_index] = 0;
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send_cmd_to_host(__roundup(fw.usb.put_index, 4),
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CARL9170_RSP_TEXT, fw.usb.put_index,
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fw.usb.put_buffer);
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fw.usb.put_index = 0;
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}
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}
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void usb_print_hex_dump(const void *buf, int len)
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{
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unsigned int offset = 0, block = 0;
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while (len > 0) {
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block = min(__roundup(len, 4), CARL9170_MAX_CMD_PAYLOAD_LEN);
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send_cmd_to_host(block, CARL9170_RSP_HEXDUMP, len,
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(const uint8_t *) buf + offset);
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offset += block;
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len -= block;
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}
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}
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#endif /* CONFIG_CARL9170FW_DEBUG_USB */
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/* grab a buffer from the interrupt in queue ring-buffer */
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static struct carl9170_rsp *get_int_buf(void)
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{
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struct carl9170_rsp *tmp;
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/* fetch the _oldest_ buffer from the ring */
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tmp = &fw.usb.int_buf[fw.usb.int_tail_index];
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/* assign a unique sequence for every response/trap */
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tmp->hdr.seq = fw.usb.int_tail_index;
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fw.usb.int_tail_index++;
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fw.usb.int_tail_index %= CARL9170_INT_RQ_CACHES;
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if (fw.usb.int_pending != CARL9170_INT_RQ_CACHES)
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fw.usb.int_pending++;
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return tmp;
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}
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/* Pop up data from Interrupt IN Queue to USB Response buffer */
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static struct carl9170_rsp *dequeue_int_buf(unsigned int space)
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{
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struct carl9170_rsp *tmp = NULL;
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if (fw.usb.int_pending > 0) {
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tmp = &fw.usb.int_buf[fw.usb.int_head_index];
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if ((unsigned int)(tmp->hdr.len + 8) > space)
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return NULL;
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fw.usb.int_head_index++;
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fw.usb.int_head_index %= CARL9170_INT_RQ_CACHES;
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fw.usb.int_pending--;
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}
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return tmp;
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}
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static void usb_data_in(void)
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{
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}
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static void usb_reg_out(void)
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{
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uint32_t *regaddr = (uint32_t *) &dma_mem.reserved.cmd;
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uint16_t usbfifolen, i;
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usb_reset_out();
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usbfifolen = getb(AR9170_USB_REG_EP4_BYTE_COUNT_LOW) |
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getb(AR9170_USB_REG_EP4_BYTE_COUNT_HIGH) << 8;
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if (usbfifolen & 0x3)
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usbfifolen = (usbfifolen >> 2) + 1;
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else
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usbfifolen = usbfifolen >> 2;
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for (i = 0; i < usbfifolen; i++)
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*regaddr++ = get(AR9170_USB_REG_EP4_DATA);
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handle_cmd(get_int_buf());
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usb_trigger_in();
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}
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static void usb_status_in(void)
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{
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struct carl9170_rsp *rsp;
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unsigned int rem, tlen, elen;
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if (!fw.usb.int_desc_available)
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return ;
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fw.usb.int_desc_available = 0;
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rem = AR9170_BLOCK_SIZE - AR9170_INT_MAGIC_HEADER_SIZE;
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tlen = AR9170_INT_MAGIC_HEADER_SIZE;
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usb_reset_in();
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while (fw.usb.int_pending) {
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rsp = dequeue_int_buf(rem);
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if (!rsp)
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break;
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elen = rsp->hdr.len + 4;
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memcpy(DESC_PAYLOAD_OFF(fw.usb.int_desc, tlen), rsp, elen);
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rem -= elen;
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tlen += elen;
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}
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if (tlen == AR9170_INT_MAGIC_HEADER_SIZE) {
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DBG("attempted to send an empty int response!\n");
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goto reclaim;
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}
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fw.usb.int_desc->ctrl = AR9170_CTRL_FS_BIT | AR9170_CTRL_LS_BIT;
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fw.usb.int_desc->totalLen = tlen;
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fw.usb.int_desc->dataSize = tlen;
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/* Put to UpQ */
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dma_put(&fw.pta.up_queue, fw.usb.int_desc);
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/* Trigger PTA UP DMA */
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set(AR9170_PTA_REG_UP_DMA_TRIGGER, 1);
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usb_trigger_out();
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return ;
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reclaim:
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/* TODO: not sure what to do here */
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fw.usb.int_desc_available = 1;
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}
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void send_cmd_to_host(const uint8_t len, const uint8_t type,
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const uint8_t ext, const uint8_t *body)
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{
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struct carl9170_cmd *resp;
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#ifdef CONFIG_CARL9170FW_DEBUG
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if (unlikely(len > sizeof(resp->data))) {
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DBG("CMD too long:%x %d\n", type, len);
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return ;
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}
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/* Element length must be a multiple of 4. */
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if (unlikely(len & 0x3)) {
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DBG("CMD length not mult. of 4:%x %d\n", type, len);
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return ;
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}
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#endif /* CONFIG_CARL9170FW_DEBUG */
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resp = (struct carl9170_cmd *) get_int_buf();
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if (unlikely(resp == NULL)) {
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/* not very helpful for NON UART users */
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DBG("out of msg buffers\n");
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return ;
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}
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resp->hdr.len = len;
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resp->hdr.cmd = type;
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resp->hdr.ext = ext;
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memcpy(resp->data, body, len);
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usb_trigger_in();
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}
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/* Turn off ADDA/RF power, PLL */
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static void turn_power_off(void)
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{
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set(AR9170_PHY_REG_ACTIVE, AR9170_PHY_ACTIVE_DIS);
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set(AR9170_PHY_REG_ADC_CTL, 0xa0000000 |
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AR9170_PHY_ADC_CTL_OFF_PWDADC | AR9170_PHY_ADC_CTL_OFF_PWDDAC);
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/* This will also turn-off the LEDs */
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set(AR9170_GPIO_REG_PORT_DATA, 0);
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set(AR9170_GPIO_REG_PORT_TYPE, 0xf);
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set(AR9170_PWR_REG_BASE, 0x40021);
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set(AR9170_MAC_REG_DMA_TRIGGER, 0);
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andl(AR9170_USB_REG_DMA_CTL, ~(AR9170_USB_DMA_CTL_ENABLE_TO_DEVICE |
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AR9170_USB_DMA_CTL_ENABLE_FROM_DEVICE |
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AR9170_USB_DMA_CTL_UP_PACKET_MODE |
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AR9170_USB_DMA_CTL_DOWN_STREAM));
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/* Do a software reset to PTA component */
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orl(AR9170_PTA_REG_DMA_MODE_CTRL, AR9170_PTA_DMA_MODE_CTRL_RESET);
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andl(AR9170_PTA_REG_DMA_MODE_CTRL, ~AR9170_PTA_DMA_MODE_CTRL_RESET);
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orl(AR9170_PTA_REG_DMA_MODE_CTRL, AR9170_PTA_DMA_MODE_CTRL_DISABLE_USB);
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set(AR9170_MAC_REG_POWER_STATE_CTRL,
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AR9170_MAC_POWER_STATE_CTRL_RESET);
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/* Reset USB FIFO */
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set(AR9170_PWR_REG_RESET, AR9170_PWR_RESET_COMMIT_RESET_MASK |
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AR9170_PWR_RESET_DMA_MASK |
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AR9170_PWR_RESET_WLAN_MASK);
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set(AR9170_PWR_REG_RESET, 0x0);
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clock_set(AHB_20_22MHZ, false);
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set(AR9170_PWR_REG_PLL_ADDAC, 0x5163); /* 0x502b; */
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set(AR9170_PHY_REG_ADC_SERIAL_CTL, AR9170_PHY_ADC_SCTL_SEL_EXTERNAL_RADIO);
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set(0x1c589c, 0); /* 7-0 */
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set(0x1c589c, 0); /* 15-8 */
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set(0x1c589c, 0); /* 23-16 */
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set(0x1c589c, 0); /* 31- */
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set(0x1c589c, 0); /* 39- */
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set(0x1c589c, 0); /* 47- */
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set(0x1c589c, 0); /* 55- */
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set(0x1c589c, 0xf8); /* 63- */
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set(0x1c589c, 0x27); /* 0x24; 71- modified */
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set(0x1c589c, 0xf9); /* 79- */
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set(0x1c589c, 0x90); /* 87- */
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set(0x1c589c, 0x04); /* 95- */
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set(0x1c589c, 0x48); /* 103- */
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set(0x1c589c, 0x19); /* 0; 111- modified */
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set(0x1c589c, 0); /* 119- */
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set(0x1c589c, 0); /* 127- */
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set(0x1c589c, 0); /* 135- */
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set(0x1c589c, 0); /* 143- */
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set(0x1c589c, 0); /* 151- */
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set(0x1c589c, 0x70); /* 159- */
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set(0x1c589c, 0x0c); /* 167- */
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set(0x1c589c, 0); /* 175- */
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set(0x1c589c, 0); /* 183-176 */
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set(0x1c589c, 0); /* 191-184 */
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set(0x1c589c, 0); /* 199- */
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set(0x1c589c, 0); /* 207- */
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set(0x1c589c, 0); /* 215- */
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set(0x1c589c, 0); /* 223- */
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set(0x1c589c, 0); /* 231- */
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set(0x1c58c4, 0); /* 233- 232 */
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set(AR9170_PHY_REG_ADC_SERIAL_CTL, AR9170_PHY_ADC_SCTL_SEL_INTERNAL_ADDAC);
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}
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static void disable_watchdog(void)
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{
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if (!fw.watchdog_enable)
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return;
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/* write watchdog magic pattern for suspend */
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andl(AR9170_PWR_REG_WATCH_DOG_MAGIC, 0xffff);
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orl(AR9170_PWR_REG_WATCH_DOG_MAGIC, 0x98760000);
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/* Disable watchdog */
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set(AR9170_TIMER_REG_WATCH_DOG, 0xffff);
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}
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void __noreturn reboot(void)
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{
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disable_watchdog();
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/* Turn off power */
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turn_power_off();
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/* clean bootloader workspace */
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memset(&dma_mem, 0, sizeof(dma_mem));
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/* add by ygwei for work around USB PHY chirp sequence problem */
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set(0x10f100, 0x12345678);
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/* Jump to boot code */
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jump_to_bootcode();
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}
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/* service USB events and re-enable USB interrupt */
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static void usb_handler(uint8_t usb_interrupt_level1)
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{
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uint8_t usb_interrupt_level2;
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if (usb_interrupt_level1 & BIT(5))
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usb_data_in();
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if (usb_interrupt_level1 & BIT(4))
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usb_reg_out();
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if (usb_interrupt_level1 & BIT(6))
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usb_status_in();
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if (usb_interrupt_level1 & BIT(0)) {
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usb_interrupt_level2 = getb(AR9170_USB_REG_INTR_SOURCE_0);
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_SETUP)
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usb_ep0setup();
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_IN)
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usb_ep0tx();
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_OUT)
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usb_ep0rx();
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_ABORT) {
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/* Clear the command abort interrupt */
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andb(AR9170_USB_REG_INTR_SOURCE_0, (uint8_t)
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~AR9170_USB_INTR_SRC0_ABORT);
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}
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_FAIL ||
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fw.usb.ep0_action & CARL9170_EP0_STALL) {
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/*
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* transmission failure.
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* stall ep 0
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*/
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setb(AR9170_USB_REG_CX_CONFIG_STATUS, BIT(2));
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fw.usb.ep0_action &= ~CARL9170_EP0_STALL;
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}
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_END ||
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fw.usb.ep0_action & CARL9170_EP0_TRIGGER) {
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/*
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* transmission done.
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* set DONE bit.
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*/
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setb(AR9170_USB_REG_CX_CONFIG_STATUS, BIT(0));
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fw.usb.ep0_action &= ~CARL9170_EP0_TRIGGER;
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}
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}
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if (usb_interrupt_level1 & BIT(7)) {
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usb_interrupt_level2 = getb(AR9170_USB_REG_INTR_SOURCE_7);
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_RX0BYTE)
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usb_data_out0Byte();
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_TX0BYTE)
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usb_data_in0Byte();
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_USB_RESET) {
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usb_reset_ack();
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reboot();
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}
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_USB_SUSPEND) {
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usb_suspend_ack();
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fw.suspend_mode = CARL9170_HOST_SUSPENDED;
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#ifdef CONFIG_CARL9170FW_WOL
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if (!(fw.usb.device_feature & USB_DEVICE_REMOTE_WAKEUP) ||
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!fw.wol.cmd.flags) {
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disable_watchdog();
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/* GO_TO_SUSPEND stops the CPU clock too. */
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orb(AR9170_USB_REG_MAIN_CTRL, AR9170_USB_MAIN_CTRL_GO_TO_SUSPEND);
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} else {
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wol_prepare();
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}
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#else /* CONFIG_CARL9170FW_WOL */
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disable_watchdog();
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/* GO_TO_SUSPEND stops the CPU clock too. */
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orb(AR9170_USB_REG_MAIN_CTRL, AR9170_USB_MAIN_CTRL_GO_TO_SUSPEND);
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#endif /* CONFIG_CARL9170FW_WOL */
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}
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if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_USB_RESUME) {
|
||
|
usb_resume_ack();
|
||
|
|
||
|
fw.suspend_mode = CARL9170_HOST_AWAKE;
|
||
|
set(AR9170_USB_REG_WAKE_UP, 0);
|
||
|
|
||
|
reboot();
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void handle_usb(void)
|
||
|
{
|
||
|
uint8_t usb_interrupt_level1;
|
||
|
|
||
|
usb_interrupt_level1 = getb(AR9170_USB_REG_INTR_GROUP);
|
||
|
|
||
|
if (usb_interrupt_level1)
|
||
|
usb_handler(usb_interrupt_level1);
|
||
|
|
||
|
if (fw.usb.int_pending > 0)
|
||
|
usb_trigger_in();
|
||
|
}
|
||
|
|
||
|
void usb_timer(void)
|
||
|
{
|
||
|
}
|