2 * (c) Copyright 2002-2010, Ralink Technology, Inc.
3 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 #include <linux/kernel.h>
17 #include <linux/firmware.h>
18 #include <linux/delay.h>
19 #include <linux/usb.h>
20 #include <linux/skbuff.h>
28 #define MCU_FW_URB_MAX_PAYLOAD 0x3800
29 #define MCU_FW_URB_SIZE (MCU_FW_URB_MAX_PAYLOAD + 12)
30 #define MCU_RESP_URB_SIZE 1024
32 static inline int firmware_running(struct mt7601u_dev *dev)
34 return mt7601u_rr(dev, MT_MCU_COM_REG0) == 1;
37 static inline void skb_put_le32(struct sk_buff *skb, u32 val)
39 put_unaligned_le32(val, skb_put(skb, 4));
42 static inline void mt7601u_dma_skb_wrap_cmd(struct sk_buff *skb,
43 u8 seq, enum mcu_cmd cmd)
45 WARN_ON(mt7601u_dma_skb_wrap(skb, CPU_TX_PORT, DMA_COMMAND,
46 FIELD_PREP(MT_TXD_CMD_INFO_SEQ, seq) |
47 FIELD_PREP(MT_TXD_CMD_INFO_TYPE, cmd)));
50 static inline void trace_mt_mcu_msg_send_cs(struct mt7601u_dev *dev,
51 struct sk_buff *skb, bool need_resp)
55 for (i = 0; i < skb->len / 4; i++)
56 csum ^= get_unaligned_le32(skb->data + i * 4);
58 trace_mt_mcu_msg_send(dev, skb, csum, need_resp);
61 static struct sk_buff *mt7601u_mcu_msg_alloc(const void *data, int len)
65 WARN_ON(len % 4); /* if length is not divisible by 4 we need to pad */
67 skb = alloc_skb(len + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
69 skb_reserve(skb, MT_DMA_HDR_LEN);
70 skb_put_data(skb, data, len);
76 static int mt7601u_mcu_wait_resp(struct mt7601u_dev *dev, u8 seq)
78 struct urb *urb = dev->mcu.resp.urb;
80 int urb_status, ret, i = 5;
83 if (!wait_for_completion_timeout(&dev->mcu.resp_cmpl,
84 msecs_to_jiffies(300))) {
85 dev_warn(dev->dev, "Warning: %s retrying\n", __func__);
89 /* Make copies of important data before reusing the urb */
90 rxfce = get_unaligned_le32(dev->mcu.resp.buf);
91 urb_status = urb->status * mt7601u_urb_has_error(urb);
93 ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
94 &dev->mcu.resp, GFP_KERNEL,
101 dev_err(dev->dev, "Error: MCU resp urb failed:%d\n",
104 if (FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce) == seq &&
105 FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce) == CMD_DONE)
108 dev_err(dev->dev, "Error: MCU resp evt:%lx seq:%hhx-%lx!\n",
109 FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce),
110 seq, FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce));
113 dev_err(dev->dev, "Error: %s timed out\n", __func__);
118 mt7601u_mcu_msg_send(struct mt7601u_dev *dev, struct sk_buff *skb,
119 enum mcu_cmd cmd, bool wait_resp)
121 struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
122 unsigned cmd_pipe = usb_sndbulkpipe(usb_dev,
123 dev->out_eps[MT_EP_OUT_INBAND_CMD]);
127 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
130 mutex_lock(&dev->mcu.mutex);
134 seq = ++dev->mcu.msg_seq & 0xf;
136 mt7601u_dma_skb_wrap_cmd(skb, seq, cmd);
138 if (dev->mcu.resp_cmpl.done)
139 dev_err(dev->dev, "Error: MCU response pre-completed!\n");
141 trace_mt_mcu_msg_send_cs(dev, skb, wait_resp);
142 trace_mt_submit_urb_sync(dev, cmd_pipe, skb->len);
143 ret = usb_bulk_msg(usb_dev, cmd_pipe, skb->data, skb->len, &sent, 500);
145 dev_err(dev->dev, "Error: send MCU cmd failed:%d\n", ret);
148 if (sent != skb->len)
149 dev_err(dev->dev, "Error: %s sent != skb->len\n", __func__);
152 ret = mt7601u_mcu_wait_resp(dev, seq);
154 mutex_unlock(&dev->mcu.mutex);
161 static int mt7601u_mcu_function_select(struct mt7601u_dev *dev,
162 enum mcu_function func, u32 val)
168 } __packed __aligned(4) msg = {
169 .id = cpu_to_le32(func),
170 .value = cpu_to_le32(val),
173 skb = mt7601u_mcu_msg_alloc(&msg, sizeof(msg));
176 return mt7601u_mcu_msg_send(dev, skb, CMD_FUN_SET_OP, func == 5);
179 int mt7601u_mcu_tssi_read_kick(struct mt7601u_dev *dev, int use_hvga)
183 if (!test_bit(MT7601U_STATE_MCU_RUNNING, &dev->state))
186 ret = mt7601u_mcu_function_select(dev, ATOMIC_TSSI_SETTING,
189 dev_warn(dev->dev, "Warning: MCU TSSI read kick failed\n");
193 dev->tssi_read_trig = true;
199 mt7601u_mcu_calibrate(struct mt7601u_dev *dev, enum mcu_calibrate cal, u32 val)
205 } __packed __aligned(4) msg = {
206 .id = cpu_to_le32(cal),
207 .value = cpu_to_le32(val),
210 skb = mt7601u_mcu_msg_alloc(&msg, sizeof(msg));
213 return mt7601u_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP, true);
216 int mt7601u_write_reg_pairs(struct mt7601u_dev *dev, u32 base,
217 const struct mt76_reg_pair *data, int n)
219 const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 8;
226 cnt = min(max_vals_per_cmd, n);
228 skb = alloc_skb(cnt * 8 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
231 skb_reserve(skb, MT_DMA_HDR_LEN);
233 for (i = 0; i < cnt; i++) {
234 skb_put_le32(skb, base + data[i].reg);
235 skb_put_le32(skb, data[i].value);
238 ret = mt7601u_mcu_msg_send(dev, skb, CMD_RANDOM_WRITE, cnt == n);
242 return mt7601u_write_reg_pairs(dev, base, data + cnt, n - cnt);
245 int mt7601u_burst_write_regs(struct mt7601u_dev *dev, u32 offset,
246 const u32 *data, int n)
248 const int max_regs_per_cmd = INBAND_PACKET_MAX_LEN / 4 - 1;
255 cnt = min(max_regs_per_cmd, n);
257 skb = alloc_skb(cnt * 4 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
260 skb_reserve(skb, MT_DMA_HDR_LEN);
262 skb_put_le32(skb, MT_MCU_MEMMAP_WLAN + offset);
263 for (i = 0; i < cnt; i++)
264 skb_put_le32(skb, data[i]);
266 ret = mt7601u_mcu_msg_send(dev, skb, CMD_BURST_WRITE, cnt == n);
270 return mt7601u_burst_write_regs(dev, offset + cnt * 4,
271 data + cnt, n - cnt);
274 struct mt76_fw_header {
284 struct mt76_fw_header hdr;
285 u8 ivb[MT_MCU_IVB_SIZE];
289 static int __mt7601u_dma_fw(struct mt7601u_dev *dev,
290 const struct mt7601u_dma_buf *dma_buf,
291 const void *data, u32 len, u32 dst_addr)
293 DECLARE_COMPLETION_ONSTACK(cmpl);
294 struct mt7601u_dma_buf buf = *dma_buf; /* we need to fake length */
299 reg = cpu_to_le32(FIELD_PREP(MT_TXD_INFO_TYPE, DMA_PACKET) |
300 FIELD_PREP(MT_TXD_INFO_D_PORT, CPU_TX_PORT) |
301 FIELD_PREP(MT_TXD_INFO_LEN, len));
302 memcpy(buf.buf, ®, sizeof(reg));
303 memcpy(buf.buf + sizeof(reg), data, len);
304 memset(buf.buf + sizeof(reg) + len, 0, 8);
306 ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
307 MT_FCE_DMA_ADDR, dst_addr);
310 len = roundup(len, 4);
311 ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
312 MT_FCE_DMA_LEN, len << 16);
316 buf.len = MT_DMA_HDR_LEN + len + 4;
317 ret = mt7601u_usb_submit_buf(dev, USB_DIR_OUT, MT_EP_OUT_INBAND_CMD,
319 mt7601u_complete_urb, &cmpl);
323 if (!wait_for_completion_timeout(&cmpl, msecs_to_jiffies(1000))) {
324 dev_err(dev->dev, "Error: firmware upload timed out\n");
325 usb_kill_urb(buf.urb);
328 if (mt7601u_urb_has_error(buf.urb)) {
329 dev_err(dev->dev, "Error: firmware upload urb failed:%d\n",
331 return buf.urb->status;
334 val = mt7601u_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX);
336 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val);
342 mt7601u_dma_fw(struct mt7601u_dev *dev, struct mt7601u_dma_buf *dma_buf,
343 const void *data, int len, u32 dst_addr)
350 n = min(MCU_FW_URB_MAX_PAYLOAD, len);
351 ret = __mt7601u_dma_fw(dev, dma_buf, data, n, dst_addr);
355 if (!mt76_poll_msec(dev, MT_MCU_COM_REG1, BIT(31), BIT(31), 500))
358 return mt7601u_dma_fw(dev, dma_buf, data + n, len - n, dst_addr + n);
362 mt7601u_upload_firmware(struct mt7601u_dev *dev, const struct mt76_fw *fw)
364 struct mt7601u_dma_buf dma_buf;
366 u32 ilm_len, dlm_len;
369 ivb = kmemdup(fw->ivb, sizeof(fw->ivb), GFP_KERNEL);
372 if (mt7601u_usb_alloc_buf(dev, MCU_FW_URB_SIZE, &dma_buf)) {
377 ilm_len = le32_to_cpu(fw->hdr.ilm_len) - sizeof(fw->ivb);
378 dev_dbg(dev->dev, "loading FW - ILM %u + IVB %zu\n",
379 ilm_len, sizeof(fw->ivb));
380 ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm, ilm_len, sizeof(fw->ivb));
384 dlm_len = le32_to_cpu(fw->hdr.dlm_len);
385 dev_dbg(dev->dev, "loading FW - DLM %u\n", dlm_len);
386 ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm + ilm_len,
387 dlm_len, MT_MCU_DLM_OFFSET);
391 ret = mt7601u_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
392 0x12, 0, ivb, sizeof(fw->ivb));
397 for (i = 100; i && !firmware_running(dev); i--)
404 dev_dbg(dev->dev, "Firmware running!\n");
407 mt7601u_usb_free_buf(dev, &dma_buf);
412 static int mt7601u_load_firmware(struct mt7601u_dev *dev)
414 const struct firmware *fw;
415 const struct mt76_fw_header *hdr;
419 mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
420 MT_USB_DMA_CFG_TX_BULK_EN));
422 if (firmware_running(dev))
423 return firmware_request_cache(dev->dev, MT7601U_FIRMWARE);
425 ret = reject_firmware(&fw, MT7601U_FIRMWARE, dev->dev);
429 if (!fw || !fw->data || fw->size < sizeof(*hdr))
432 hdr = (const struct mt76_fw_header *) fw->data;
434 if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)
438 len += le32_to_cpu(hdr->ilm_len);
439 len += le32_to_cpu(hdr->dlm_len);
444 val = le16_to_cpu(hdr->fw_ver);
446 "Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
447 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
448 le16_to_cpu(hdr->build_ver), hdr->build_time);
450 len = le32_to_cpu(hdr->ilm_len);
452 mt7601u_wr(dev, 0x94c, 0);
453 mt7601u_wr(dev, MT_FCE_PSE_CTRL, 0);
455 mt7601u_vendor_reset(dev);
458 mt7601u_wr(dev, 0xa44, 0);
459 mt7601u_wr(dev, 0x230, 0x84210);
460 mt7601u_wr(dev, 0x400, 0x80c00);
461 mt7601u_wr(dev, 0x800, 1);
463 mt7601u_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN |
466 MT_PBF_CFG_TX3Q_EN));
468 mt7601u_wr(dev, MT_FCE_PSE_CTRL, 1);
470 mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
471 MT_USB_DMA_CFG_TX_BULK_EN));
472 val = mt76_set(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_CLR);
473 val &= ~MT_USB_DMA_CFG_TX_CLR;
474 mt7601u_wr(dev, MT_USB_DMA_CFG, val);
476 /* FCE tx_fs_base_ptr */
477 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
478 /* FCE tx_fs_max_cnt */
479 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1);
480 /* FCE pdma enable */
481 mt7601u_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
483 mt7601u_wr(dev, MT_FCE_SKIP_FS, 3);
485 ret = mt7601u_upload_firmware(dev, (const struct mt76_fw *)fw->data);
487 release_firmware(fw);
492 dev_err(dev->dev, "Invalid firmware image\n");
493 release_firmware(fw);
497 int mt7601u_mcu_init(struct mt7601u_dev *dev)
501 mutex_init(&dev->mcu.mutex);
503 ret = mt7601u_load_firmware(dev);
507 set_bit(MT7601U_STATE_MCU_RUNNING, &dev->state);
512 int mt7601u_mcu_cmd_init(struct mt7601u_dev *dev)
516 ret = mt7601u_mcu_function_select(dev, Q_SELECT, 1);
520 init_completion(&dev->mcu.resp_cmpl);
521 if (mt7601u_usb_alloc_buf(dev, MCU_RESP_URB_SIZE, &dev->mcu.resp)) {
522 mt7601u_usb_free_buf(dev, &dev->mcu.resp);
526 ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
527 &dev->mcu.resp, GFP_KERNEL,
528 mt7601u_complete_urb, &dev->mcu.resp_cmpl);
530 mt7601u_usb_free_buf(dev, &dev->mcu.resp);
537 void mt7601u_mcu_cmd_deinit(struct mt7601u_dev *dev)
539 usb_kill_urb(dev->mcu.resp.urb);
540 mt7601u_usb_free_buf(dev, &dev->mcu.resp);