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Diffstat (limited to 'carl9170fw/carlfw/usb/main.c')
-rw-r--r--carl9170fw/carlfw/usb/main.c432
1 files changed, 432 insertions, 0 deletions
diff --git a/carl9170fw/carlfw/usb/main.c b/carl9170fw/carlfw/usb/main.c
new file mode 100644
index 0000000..890970c
--- /dev/null
+++ b/carl9170fw/carlfw/usb/main.c
@@ -0,0 +1,432 @@
+/*
+ * carl9170 firmware - used by the ar9170 wireless device
+ *
+ * Copyright (c) 2000-2005 ZyDAS Technology Corporation
+ * Copyright (c) 2007-2009 Atheros Communications, Inc.
+ * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "carl9170.h"
+
+#include "shared/phy.h"
+#include "hostif.h"
+#include "printf.h"
+#include "timer.h"
+#include "rom.h"
+#include "wl.h"
+#include "wol.h"
+
+#ifdef CONFIG_CARL9170FW_DEBUG_USB
+void usb_putc(const char c)
+{
+ fw.usb.put_buffer[fw.usb.put_index++] = (uint8_t) c;
+
+ if (fw.usb.put_index == CARL9170_MAX_CMD_PAYLOAD_LEN || c == '\0') {
+ fw.usb.put_buffer[fw.usb.put_index] = 0;
+
+ send_cmd_to_host(__roundup(fw.usb.put_index, 4),
+ CARL9170_RSP_TEXT, fw.usb.put_index,
+ fw.usb.put_buffer);
+ fw.usb.put_index = 0;
+ }
+}
+
+void usb_print_hex_dump(const void *buf, int len)
+{
+ unsigned int offset = 0, block = 0;
+ while (len > 0) {
+ block = min(__roundup(len, 4), CARL9170_MAX_CMD_PAYLOAD_LEN);
+
+ send_cmd_to_host(block, CARL9170_RSP_HEXDUMP, len,
+ (const uint8_t *) buf + offset);
+
+ offset += block;
+ len -= block;
+ }
+}
+#endif /* CONFIG_CARL9170FW_DEBUG_USB */
+
+/* grab a buffer from the interrupt in queue ring-buffer */
+static struct carl9170_rsp *get_int_buf(void)
+{
+ struct carl9170_rsp *tmp;
+
+ /* fetch the _oldest_ buffer from the ring */
+ tmp = &fw.usb.int_buf[fw.usb.int_tail_index];
+
+ /* assign a unique sequence for every response/trap */
+ tmp->hdr.seq = fw.usb.int_tail_index;
+
+ fw.usb.int_tail_index++;
+
+ fw.usb.int_tail_index %= CARL9170_INT_RQ_CACHES;
+ if (fw.usb.int_pending != CARL9170_INT_RQ_CACHES)
+ fw.usb.int_pending++;
+
+ return tmp;
+}
+
+/* Pop up data from Interrupt IN Queue to USB Response buffer */
+static struct carl9170_rsp *dequeue_int_buf(unsigned int space)
+{
+ struct carl9170_rsp *tmp = NULL;
+
+ if (fw.usb.int_pending > 0) {
+ tmp = &fw.usb.int_buf[fw.usb.int_head_index];
+
+ if ((unsigned int)(tmp->hdr.len + 8) > space)
+ return NULL;
+
+ fw.usb.int_head_index++;
+ fw.usb.int_head_index %= CARL9170_INT_RQ_CACHES;
+ fw.usb.int_pending--;
+ }
+
+ return tmp;
+}
+
+static void usb_data_in(void)
+{
+}
+
+static void usb_reg_out(void)
+{
+ uint32_t *regaddr = (uint32_t *) &dma_mem.reserved.cmd;
+ uint16_t usbfifolen, i;
+
+ usb_reset_out();
+
+ usbfifolen = getb(AR9170_USB_REG_EP4_BYTE_COUNT_LOW) |
+ getb(AR9170_USB_REG_EP4_BYTE_COUNT_HIGH) << 8;
+
+ if (usbfifolen & 0x3)
+ usbfifolen = (usbfifolen >> 2) + 1;
+ else
+ usbfifolen = usbfifolen >> 2;
+
+ for (i = 0; i < usbfifolen; i++)
+ *regaddr++ = get(AR9170_USB_REG_EP4_DATA);
+
+ handle_cmd(get_int_buf());
+
+ usb_trigger_in();
+}
+
+static void usb_status_in(void)
+{
+ struct carl9170_rsp *rsp;
+ unsigned int rem, tlen, elen;
+
+ if (!fw.usb.int_desc_available)
+ return ;
+
+ fw.usb.int_desc_available = 0;
+
+ rem = AR9170_BLOCK_SIZE - AR9170_INT_MAGIC_HEADER_SIZE;
+ tlen = AR9170_INT_MAGIC_HEADER_SIZE;
+
+ usb_reset_in();
+
+ while (fw.usb.int_pending) {
+ rsp = dequeue_int_buf(rem);
+ if (!rsp)
+ break;
+
+ elen = rsp->hdr.len + 4;
+
+ memcpy(DESC_PAYLOAD_OFF(fw.usb.int_desc, tlen), rsp, elen);
+
+ rem -= elen;
+ tlen += elen;
+ }
+
+ if (tlen == AR9170_INT_MAGIC_HEADER_SIZE) {
+ DBG("attempted to send an empty int response!\n");
+ goto reclaim;
+ }
+
+ fw.usb.int_desc->ctrl = AR9170_CTRL_FS_BIT | AR9170_CTRL_LS_BIT;
+ fw.usb.int_desc->totalLen = tlen;
+ fw.usb.int_desc->dataSize = tlen;
+
+ /* Put to UpQ */
+ dma_put(&fw.pta.up_queue, fw.usb.int_desc);
+
+ /* Trigger PTA UP DMA */
+ set(AR9170_PTA_REG_UP_DMA_TRIGGER, 1);
+ usb_trigger_out();
+
+ return ;
+
+reclaim:
+ /* TODO: not sure what to do here */
+ fw.usb.int_desc_available = 1;
+}
+
+void send_cmd_to_host(const uint8_t len, const uint8_t type,
+ const uint8_t ext, const uint8_t *body)
+{
+ struct carl9170_cmd *resp;
+
+#ifdef CONFIG_CARL9170FW_DEBUG
+ if (unlikely(len > sizeof(resp->data))) {
+ DBG("CMD too long:%x %d\n", type, len);
+ return ;
+ }
+
+ /* Element length must be a multiple of 4. */
+ if (unlikely(len & 0x3)) {
+ DBG("CMD length not mult. of 4:%x %d\n", type, len);
+ return ;
+ }
+#endif /* CONFIG_CARL9170FW_DEBUG */
+
+ resp = (struct carl9170_cmd *) get_int_buf();
+ if (unlikely(resp == NULL)) {
+ /* not very helpful for NON UART users */
+ DBG("out of msg buffers\n");
+ return ;
+ }
+
+ resp->hdr.len = len;
+ resp->hdr.cmd = type;
+ resp->hdr.ext = ext;
+
+ memcpy(resp->data, body, len);
+ usb_trigger_in();
+}
+
+/* Turn off ADDA/RF power, PLL */
+static void turn_power_off(void)
+{
+ set(AR9170_PHY_REG_ACTIVE, AR9170_PHY_ACTIVE_DIS);
+ set(AR9170_PHY_REG_ADC_CTL, 0xa0000000 |
+ AR9170_PHY_ADC_CTL_OFF_PWDADC | AR9170_PHY_ADC_CTL_OFF_PWDDAC);
+
+ /* This will also turn-off the LEDs */
+ set(AR9170_GPIO_REG_PORT_DATA, 0);
+ set(AR9170_GPIO_REG_PORT_TYPE, 0xf);
+
+ set(AR9170_PWR_REG_BASE, 0x40021);
+
+ set(AR9170_MAC_REG_DMA_TRIGGER, 0);
+
+ andl(AR9170_USB_REG_DMA_CTL, ~(AR9170_USB_DMA_CTL_ENABLE_TO_DEVICE |
+ AR9170_USB_DMA_CTL_ENABLE_FROM_DEVICE |
+ AR9170_USB_DMA_CTL_UP_PACKET_MODE |
+ AR9170_USB_DMA_CTL_DOWN_STREAM));
+
+ /* Do a software reset to PTA component */
+ orl(AR9170_PTA_REG_DMA_MODE_CTRL, AR9170_PTA_DMA_MODE_CTRL_RESET);
+ andl(AR9170_PTA_REG_DMA_MODE_CTRL, ~AR9170_PTA_DMA_MODE_CTRL_RESET);
+
+ orl(AR9170_PTA_REG_DMA_MODE_CTRL, AR9170_PTA_DMA_MODE_CTRL_DISABLE_USB);
+
+ set(AR9170_MAC_REG_POWER_STATE_CTRL,
+ AR9170_MAC_POWER_STATE_CTRL_RESET);
+
+ /* Reset USB FIFO */
+ set(AR9170_PWR_REG_RESET, AR9170_PWR_RESET_COMMIT_RESET_MASK |
+ AR9170_PWR_RESET_DMA_MASK |
+ AR9170_PWR_RESET_WLAN_MASK);
+ set(AR9170_PWR_REG_RESET, 0x0);
+
+ clock_set(AHB_20_22MHZ, false);
+
+ set(AR9170_PWR_REG_PLL_ADDAC, 0x5163); /* 0x502b; */
+ set(AR9170_PHY_REG_ADC_SERIAL_CTL, AR9170_PHY_ADC_SCTL_SEL_EXTERNAL_RADIO);
+ set(0x1c589c, 0); /* 7-0 */
+ set(0x1c589c, 0); /* 15-8 */
+ set(0x1c589c, 0); /* 23-16 */
+ set(0x1c589c, 0); /* 31- */
+ set(0x1c589c, 0); /* 39- */
+ set(0x1c589c, 0); /* 47- */
+ set(0x1c589c, 0); /* 55- */
+ set(0x1c589c, 0xf8); /* 63- */
+ set(0x1c589c, 0x27); /* 0x24; 71- modified */
+ set(0x1c589c, 0xf9); /* 79- */
+ set(0x1c589c, 0x90); /* 87- */
+ set(0x1c589c, 0x04); /* 95- */
+ set(0x1c589c, 0x48); /* 103- */
+ set(0x1c589c, 0x19); /* 0; 111- modified */
+ set(0x1c589c, 0); /* 119- */
+ set(0x1c589c, 0); /* 127- */
+ set(0x1c589c, 0); /* 135- */
+ set(0x1c589c, 0); /* 143- */
+ set(0x1c589c, 0); /* 151- */
+ set(0x1c589c, 0x70); /* 159- */
+ set(0x1c589c, 0x0c); /* 167- */
+ set(0x1c589c, 0); /* 175- */
+ set(0x1c589c, 0); /* 183-176 */
+ set(0x1c589c, 0); /* 191-184 */
+ set(0x1c589c, 0); /* 199- */
+ set(0x1c589c, 0); /* 207- */
+ set(0x1c589c, 0); /* 215- */
+ set(0x1c589c, 0); /* 223- */
+ set(0x1c589c, 0); /* 231- */
+ set(0x1c58c4, 0); /* 233- 232 */
+ set(AR9170_PHY_REG_ADC_SERIAL_CTL, AR9170_PHY_ADC_SCTL_SEL_INTERNAL_ADDAC);
+}
+
+static void disable_watchdog(void)
+{
+ if (!fw.watchdog_enable)
+ return;
+
+ /* write watchdog magic pattern for suspend */
+ andl(AR9170_PWR_REG_WATCH_DOG_MAGIC, 0xffff);
+ orl(AR9170_PWR_REG_WATCH_DOG_MAGIC, 0x98760000);
+
+ /* Disable watchdog */
+ set(AR9170_TIMER_REG_WATCH_DOG, 0xffff);
+}
+
+void __noreturn reboot(void)
+{
+ disable_watchdog();
+
+ /* Turn off power */
+ turn_power_off();
+
+ /* clean bootloader workspace */
+ memset(&dma_mem, 0, sizeof(dma_mem));
+
+ /* add by ygwei for work around USB PHY chirp sequence problem */
+ set(0x10f100, 0x12345678);
+
+ /* Jump to boot code */
+ jump_to_bootcode();
+}
+
+/* service USB events and re-enable USB interrupt */
+static void usb_handler(uint8_t usb_interrupt_level1)
+{
+ uint8_t usb_interrupt_level2;
+
+ if (usb_interrupt_level1 & BIT(5))
+ usb_data_in();
+
+ if (usb_interrupt_level1 & BIT(4))
+ usb_reg_out();
+
+ if (usb_interrupt_level1 & BIT(6))
+ usb_status_in();
+
+ if (usb_interrupt_level1 & BIT(0)) {
+ usb_interrupt_level2 = getb(AR9170_USB_REG_INTR_SOURCE_0);
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_SETUP)
+ usb_ep0setup();
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_IN)
+ usb_ep0tx();
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_OUT)
+ usb_ep0rx();
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_ABORT) {
+ /* Clear the command abort interrupt */
+ andb(AR9170_USB_REG_INTR_SOURCE_0, (uint8_t)
+ ~AR9170_USB_INTR_SRC0_ABORT);
+ }
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_FAIL ||
+ fw.usb.ep0_action & CARL9170_EP0_STALL) {
+ /*
+ * transmission failure.
+ * stall ep 0
+ */
+ setb(AR9170_USB_REG_CX_CONFIG_STATUS, BIT(2));
+ fw.usb.ep0_action &= ~CARL9170_EP0_STALL;
+ }
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC0_END ||
+ fw.usb.ep0_action & CARL9170_EP0_TRIGGER) {
+ /*
+ * transmission done.
+ * set DONE bit.
+ */
+ setb(AR9170_USB_REG_CX_CONFIG_STATUS, BIT(0));
+ fw.usb.ep0_action &= ~CARL9170_EP0_TRIGGER;
+ }
+ }
+
+ if (usb_interrupt_level1 & BIT(7)) {
+ usb_interrupt_level2 = getb(AR9170_USB_REG_INTR_SOURCE_7);
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_RX0BYTE)
+ usb_data_out0Byte();
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_TX0BYTE)
+ usb_data_in0Byte();
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_USB_RESET) {
+ usb_reset_ack();
+ reboot();
+ }
+
+ if (usb_interrupt_level2 & AR9170_USB_INTR_SRC7_USB_SUSPEND) {
+ usb_suspend_ack();
+
+ fw.suspend_mode = CARL9170_HOST_SUSPENDED;
+
+#ifdef CONFIG_CARL9170FW_WOL
+ if (!(fw.usb.device_feature & USB_DEVICE_REMOTE_WAKEUP) ||
+ !fw.wol.cmd.flags) {
+ disable_watchdog();
+
+ /* GO_TO_SUSPEND stops the CPU clock too. */
+ orb(AR9170_USB_REG_MAIN_CTRL, AR9170_USB_MAIN_CTRL_GO_TO_SUSPEND);
+ } else {
+ wol_prepare();
+ }
+#else /* CONFIG_CARL9170FW_WOL */
+ disable_watchdog();
+
+ /* GO_TO_SUSPEND stops the CPU clock too. */
+ orb(AR9170_USB_REG_MAIN_CTRL, AR9170_USB_MAIN_CTRL_GO_TO_SUSPEND);
+#endif /* CONFIG_CARL9170FW_WOL */
+ }
+
+ 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)
+{
+}