1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2 /* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved */
4 #include <linux/circ_buf.h>
5 #include <linux/device.h>
6 #include <linux/firmware.h>
7 #include <linux/iopoll.h>
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10 #include <linux/pci.h>
14 #define PRESTERA_MSG_MAX_SIZE 1500
16 #define PRESTERA_SUPP_FW_MAJ_VER 2
17 #define PRESTERA_SUPP_FW_MIN_VER 0
19 #define PRESTERA_FW_PATH_FMT "/*(DEBLOBBED)*/"
21 #define PRESTERA_FW_HDR_MAGIC 0x351D9D06
22 #define PRESTERA_FW_DL_TIMEOUT_MS 50000
23 #define PRESTERA_FW_BLK_SZ 1024
25 #define PRESTERA_FW_VER_MAJ_MUL 1000000
26 #define PRESTERA_FW_VER_MIN_MUL 1000
28 #define PRESTERA_FW_VER_MAJ(v) ((v) / PRESTERA_FW_VER_MAJ_MUL)
30 #define PRESTERA_FW_VER_MIN(v) \
31 (((v) - (PRESTERA_FW_VER_MAJ(v) * PRESTERA_FW_VER_MAJ_MUL)) / \
32 PRESTERA_FW_VER_MIN_MUL)
34 #define PRESTERA_FW_VER_PATCH(v) \
35 ((v) - (PRESTERA_FW_VER_MAJ(v) * PRESTERA_FW_VER_MAJ_MUL) - \
36 (PRESTERA_FW_VER_MIN(v) * PRESTERA_FW_VER_MIN_MUL))
38 enum prestera_pci_bar_t {
39 PRESTERA_PCI_BAR_FW = 2,
40 PRESTERA_PCI_BAR_PP = 4,
43 struct prestera_fw_header {
49 struct prestera_ldr_regs {
66 #define PRESTERA_LDR_REG_OFFSET(f) offsetof(struct prestera_ldr_regs, f)
68 #define PRESTERA_LDR_READY_MAGIC 0xf00dfeed
70 #define PRESTERA_LDR_STATUS_IMG_DL BIT(0)
71 #define PRESTERA_LDR_STATUS_START_FW BIT(1)
72 #define PRESTERA_LDR_STATUS_INVALID_IMG BIT(2)
73 #define PRESTERA_LDR_STATUS_NOMEM BIT(3)
75 #define PRESTERA_LDR_REG_BASE(fw) ((fw)->ldr_regs)
76 #define PRESTERA_LDR_REG_ADDR(fw, reg) (PRESTERA_LDR_REG_BASE(fw) + (reg))
78 /* fw loader registers */
79 #define PRESTERA_LDR_READY_REG PRESTERA_LDR_REG_OFFSET(ldr_ready)
80 #define PRESTERA_LDR_IMG_SIZE_REG PRESTERA_LDR_REG_OFFSET(ldr_img_size)
81 #define PRESTERA_LDR_CTL_REG PRESTERA_LDR_REG_OFFSET(ldr_ctl_flags)
82 #define PRESTERA_LDR_BUF_SIZE_REG PRESTERA_LDR_REG_OFFSET(ldr_buf_size)
83 #define PRESTERA_LDR_BUF_OFFS_REG PRESTERA_LDR_REG_OFFSET(ldr_buf_offs)
84 #define PRESTERA_LDR_BUF_RD_REG PRESTERA_LDR_REG_OFFSET(ldr_buf_rd)
85 #define PRESTERA_LDR_BUF_WR_REG PRESTERA_LDR_REG_OFFSET(ldr_buf_wr)
86 #define PRESTERA_LDR_STATUS_REG PRESTERA_LDR_REG_OFFSET(ldr_status)
88 #define PRESTERA_LDR_CTL_DL_START BIT(0)
90 #define PRESTERA_EVT_QNUM_MAX 4
92 struct prestera_fw_evtq_regs {
101 struct prestera_fw_regs {
117 struct prestera_fw_evtq_regs evtq_list[PRESTERA_EVT_QNUM_MAX];
120 #define PRESTERA_FW_REG_OFFSET(f) offsetof(struct prestera_fw_regs, f)
122 #define PRESTERA_FW_READY_MAGIC 0xcafebabe
125 #define PRESTERA_FW_READY_REG PRESTERA_FW_REG_OFFSET(fw_ready)
127 #define PRESTERA_CMD_BUF_OFFS_REG PRESTERA_FW_REG_OFFSET(cmd_offs)
128 #define PRESTERA_CMD_BUF_LEN_REG PRESTERA_FW_REG_OFFSET(cmd_len)
129 #define PRESTERA_EVT_BUF_OFFS_REG PRESTERA_FW_REG_OFFSET(evt_offs)
130 #define PRESTERA_EVT_QNUM_REG PRESTERA_FW_REG_OFFSET(evt_qnum)
132 #define PRESTERA_CMD_REQ_CTL_REG PRESTERA_FW_REG_OFFSET(cmd_req_ctl)
133 #define PRESTERA_CMD_REQ_LEN_REG PRESTERA_FW_REG_OFFSET(cmd_req_len)
135 #define PRESTERA_CMD_RCV_CTL_REG PRESTERA_FW_REG_OFFSET(cmd_rcv_ctl)
136 #define PRESTERA_CMD_RCV_LEN_REG PRESTERA_FW_REG_OFFSET(cmd_rcv_len)
137 #define PRESTERA_FW_STATUS_REG PRESTERA_FW_REG_OFFSET(fw_status)
138 #define PRESTERA_RX_STATUS_REG PRESTERA_FW_REG_OFFSET(rx_status)
140 /* PRESTERA_CMD_REQ_CTL_REG flags */
141 #define PRESTERA_CMD_F_REQ_SENT BIT(0)
142 #define PRESTERA_CMD_F_REPL_RCVD BIT(1)
144 /* PRESTERA_CMD_RCV_CTL_REG flags */
145 #define PRESTERA_CMD_F_REPL_SENT BIT(0)
147 #define PRESTERA_EVTQ_REG_OFFSET(q, f) \
148 (PRESTERA_FW_REG_OFFSET(evtq_list) + \
149 (q) * sizeof(struct prestera_fw_evtq_regs) + \
150 offsetof(struct prestera_fw_evtq_regs, f))
152 #define PRESTERA_EVTQ_RD_IDX_REG(q) PRESTERA_EVTQ_REG_OFFSET(q, rd_idx)
153 #define PRESTERA_EVTQ_WR_IDX_REG(q) PRESTERA_EVTQ_REG_OFFSET(q, wr_idx)
154 #define PRESTERA_EVTQ_OFFS_REG(q) PRESTERA_EVTQ_REG_OFFSET(q, offs)
155 #define PRESTERA_EVTQ_LEN_REG(q) PRESTERA_EVTQ_REG_OFFSET(q, len)
157 #define PRESTERA_FW_REG_BASE(fw) ((fw)->dev.ctl_regs)
158 #define PRESTERA_FW_REG_ADDR(fw, reg) PRESTERA_FW_REG_BASE((fw)) + (reg)
160 #define PRESTERA_FW_CMD_DEFAULT_WAIT_MS 30000
161 #define PRESTERA_FW_READY_WAIT_MS 20000
163 struct prestera_fw_evtq {
169 struct workqueue_struct *wq;
170 struct prestera_device dev;
171 u8 __iomem *ldr_regs;
172 u8 __iomem *ldr_ring_buf;
175 struct mutex cmd_mtx; /* serialize access to dev->send_req */
177 u8 __iomem *cmd_mbox;
178 struct prestera_fw_evtq evt_queue[PRESTERA_EVT_QNUM_MAX];
180 struct work_struct evt_work;
185 static int prestera_fw_load(struct prestera_fw *fw);
187 static void prestera_fw_write(struct prestera_fw *fw, u32 reg, u32 val)
189 writel(val, PRESTERA_FW_REG_ADDR(fw, reg));
192 static u32 prestera_fw_read(struct prestera_fw *fw, u32 reg)
194 return readl(PRESTERA_FW_REG_ADDR(fw, reg));
197 static u32 prestera_fw_evtq_len(struct prestera_fw *fw, u8 qid)
199 return fw->evt_queue[qid].len;
202 static u32 prestera_fw_evtq_avail(struct prestera_fw *fw, u8 qid)
204 u32 wr_idx = prestera_fw_read(fw, PRESTERA_EVTQ_WR_IDX_REG(qid));
205 u32 rd_idx = prestera_fw_read(fw, PRESTERA_EVTQ_RD_IDX_REG(qid));
207 return CIRC_CNT(wr_idx, rd_idx, prestera_fw_evtq_len(fw, qid));
210 static void prestera_fw_evtq_rd_set(struct prestera_fw *fw,
213 u32 rd_idx = idx & (prestera_fw_evtq_len(fw, qid) - 1);
215 prestera_fw_write(fw, PRESTERA_EVTQ_RD_IDX_REG(qid), rd_idx);
218 static u8 __iomem *prestera_fw_evtq_buf(struct prestera_fw *fw, u8 qid)
220 return fw->evt_queue[qid].addr;
223 static u32 prestera_fw_evtq_read32(struct prestera_fw *fw, u8 qid)
225 u32 rd_idx = prestera_fw_read(fw, PRESTERA_EVTQ_RD_IDX_REG(qid));
228 val = readl(prestera_fw_evtq_buf(fw, qid) + rd_idx);
229 prestera_fw_evtq_rd_set(fw, qid, rd_idx + 4);
233 static ssize_t prestera_fw_evtq_read_buf(struct prestera_fw *fw,
234 u8 qid, void *buf, size_t len)
236 u32 idx = prestera_fw_read(fw, PRESTERA_EVTQ_RD_IDX_REG(qid));
237 u8 __iomem *evtq_addr = prestera_fw_evtq_buf(fw, qid);
241 for (i = 0; i < len / 4; buf32++, i++) {
242 *buf32 = readl_relaxed(evtq_addr + idx);
243 idx = (idx + 4) & (prestera_fw_evtq_len(fw, qid) - 1);
246 prestera_fw_evtq_rd_set(fw, qid, idx);
251 static u8 prestera_fw_evtq_pick(struct prestera_fw *fw)
255 for (qid = 0; qid < fw->evt_qnum; qid++) {
256 if (prestera_fw_evtq_avail(fw, qid) >= 4)
260 return PRESTERA_EVT_QNUM_MAX;
263 static void prestera_fw_evt_work_fn(struct work_struct *work)
265 struct prestera_fw *fw;
269 fw = container_of(work, struct prestera_fw, evt_work);
272 while ((qid = prestera_fw_evtq_pick(fw)) < PRESTERA_EVT_QNUM_MAX) {
276 len = prestera_fw_evtq_read32(fw, qid);
277 idx = prestera_fw_read(fw, PRESTERA_EVTQ_RD_IDX_REG(qid));
279 WARN_ON(prestera_fw_evtq_avail(fw, qid) < len);
281 if (WARN_ON(len > PRESTERA_MSG_MAX_SIZE)) {
282 prestera_fw_evtq_rd_set(fw, qid, idx + len);
286 prestera_fw_evtq_read_buf(fw, qid, msg, len);
288 if (fw->dev.recv_msg)
289 fw->dev.recv_msg(&fw->dev, msg, len);
293 static int prestera_fw_wait_reg32(struct prestera_fw *fw, u32 reg, u32 cmp,
296 u8 __iomem *addr = PRESTERA_FW_REG_ADDR(fw, reg);
299 return readl_poll_timeout(addr, val, cmp == val,
300 1 * USEC_PER_MSEC, waitms * USEC_PER_MSEC);
303 static int prestera_fw_cmd_send(struct prestera_fw *fw,
304 void *in_msg, size_t in_size,
305 void *out_msg, size_t out_size,
312 waitms = PRESTERA_FW_CMD_DEFAULT_WAIT_MS;
314 if (ALIGN(in_size, 4) > fw->cmd_mbox_len)
317 /* wait for finish previous reply from FW */
318 err = prestera_fw_wait_reg32(fw, PRESTERA_CMD_RCV_CTL_REG, 0, 30);
320 dev_err(fw->dev.dev, "finish reply from FW is timed out\n");
324 prestera_fw_write(fw, PRESTERA_CMD_REQ_LEN_REG, in_size);
325 memcpy_toio(fw->cmd_mbox, in_msg, in_size);
327 prestera_fw_write(fw, PRESTERA_CMD_REQ_CTL_REG, PRESTERA_CMD_F_REQ_SENT);
329 /* wait for reply from FW */
330 err = prestera_fw_wait_reg32(fw, PRESTERA_CMD_RCV_CTL_REG,
331 PRESTERA_CMD_F_REPL_SENT, waitms);
333 dev_err(fw->dev.dev, "reply from FW is timed out\n");
337 ret_size = prestera_fw_read(fw, PRESTERA_CMD_RCV_LEN_REG);
338 if (ret_size > out_size) {
339 dev_err(fw->dev.dev, "ret_size (%u) > out_len(%zu)\n",
345 memcpy_fromio(out_msg, fw->cmd_mbox + in_size, ret_size);
348 prestera_fw_write(fw, PRESTERA_CMD_REQ_CTL_REG, PRESTERA_CMD_F_REPL_RCVD);
352 static int prestera_fw_send_req(struct prestera_device *dev,
353 void *in_msg, size_t in_size, void *out_msg,
354 size_t out_size, unsigned int waitms)
356 struct prestera_fw *fw;
359 fw = container_of(dev, struct prestera_fw, dev);
361 mutex_lock(&fw->cmd_mtx);
362 ret = prestera_fw_cmd_send(fw, in_msg, in_size, out_msg, out_size, waitms);
363 mutex_unlock(&fw->cmd_mtx);
368 static int prestera_fw_init(struct prestera_fw *fw)
374 fw->dev.send_req = prestera_fw_send_req;
375 fw->ldr_regs = fw->dev.ctl_regs;
377 err = prestera_fw_load(fw);
381 err = prestera_fw_wait_reg32(fw, PRESTERA_FW_READY_REG,
382 PRESTERA_FW_READY_MAGIC,
383 PRESTERA_FW_READY_WAIT_MS);
385 dev_err(fw->dev.dev, "FW failed to start\n");
389 base = fw->dev.ctl_regs;
391 fw->cmd_mbox = base + prestera_fw_read(fw, PRESTERA_CMD_BUF_OFFS_REG);
392 fw->cmd_mbox_len = prestera_fw_read(fw, PRESTERA_CMD_BUF_LEN_REG);
393 mutex_init(&fw->cmd_mtx);
395 fw->evt_buf = base + prestera_fw_read(fw, PRESTERA_EVT_BUF_OFFS_REG);
396 fw->evt_qnum = prestera_fw_read(fw, PRESTERA_EVT_QNUM_REG);
397 fw->evt_msg = kmalloc(PRESTERA_MSG_MAX_SIZE, GFP_KERNEL);
401 for (qid = 0; qid < fw->evt_qnum; qid++) {
402 u32 offs = prestera_fw_read(fw, PRESTERA_EVTQ_OFFS_REG(qid));
403 struct prestera_fw_evtq *evtq = &fw->evt_queue[qid];
405 evtq->len = prestera_fw_read(fw, PRESTERA_EVTQ_LEN_REG(qid));
406 evtq->addr = fw->evt_buf + offs;
412 static void prestera_fw_uninit(struct prestera_fw *fw)
417 static irqreturn_t prestera_pci_irq_handler(int irq, void *dev_id)
419 struct prestera_fw *fw = dev_id;
421 if (prestera_fw_read(fw, PRESTERA_RX_STATUS_REG)) {
422 prestera_fw_write(fw, PRESTERA_RX_STATUS_REG, 0);
424 if (fw->dev.recv_pkt)
425 fw->dev.recv_pkt(&fw->dev);
428 queue_work(fw->wq, &fw->evt_work);
433 static void prestera_ldr_write(struct prestera_fw *fw, u32 reg, u32 val)
435 writel(val, PRESTERA_LDR_REG_ADDR(fw, reg));
438 static u32 prestera_ldr_read(struct prestera_fw *fw, u32 reg)
440 return readl(PRESTERA_LDR_REG_ADDR(fw, reg));
443 static int prestera_ldr_wait_reg32(struct prestera_fw *fw,
444 u32 reg, u32 cmp, unsigned int waitms)
446 u8 __iomem *addr = PRESTERA_LDR_REG_ADDR(fw, reg);
449 return readl_poll_timeout(addr, val, cmp == val,
450 10 * USEC_PER_MSEC, waitms * USEC_PER_MSEC);
453 static u32 prestera_ldr_wait_buf(struct prestera_fw *fw, size_t len)
455 u8 __iomem *addr = PRESTERA_LDR_REG_ADDR(fw, PRESTERA_LDR_BUF_RD_REG);
456 u32 buf_len = fw->ldr_buf_len;
457 u32 wr_idx = fw->ldr_wr_idx;
460 return readl_poll_timeout(addr, rd_idx,
461 CIRC_SPACE(wr_idx, rd_idx, buf_len) >= len,
462 1 * USEC_PER_MSEC, 100 * USEC_PER_MSEC);
465 static int prestera_ldr_wait_dl_finish(struct prestera_fw *fw)
467 u8 __iomem *addr = PRESTERA_LDR_REG_ADDR(fw, PRESTERA_LDR_STATUS_REG);
468 unsigned long mask = ~(PRESTERA_LDR_STATUS_IMG_DL);
472 err = readl_poll_timeout(addr, val, val & mask, 10 * USEC_PER_MSEC,
473 PRESTERA_FW_DL_TIMEOUT_MS * USEC_PER_MSEC);
475 dev_err(fw->dev.dev, "Timeout to load FW img [state=%d]",
476 prestera_ldr_read(fw, PRESTERA_LDR_STATUS_REG));
483 static void prestera_ldr_wr_idx_move(struct prestera_fw *fw, unsigned int n)
485 fw->ldr_wr_idx = (fw->ldr_wr_idx + (n)) & (fw->ldr_buf_len - 1);
488 static void prestera_ldr_wr_idx_commit(struct prestera_fw *fw)
490 prestera_ldr_write(fw, PRESTERA_LDR_BUF_WR_REG, fw->ldr_wr_idx);
493 static u8 __iomem *prestera_ldr_wr_ptr(struct prestera_fw *fw)
495 return fw->ldr_ring_buf + fw->ldr_wr_idx;
498 static int prestera_ldr_send(struct prestera_fw *fw, const u8 *buf, size_t len)
503 err = prestera_ldr_wait_buf(fw, len);
505 dev_err(fw->dev.dev, "failed wait for sending firmware\n");
509 for (i = 0; i < len; i += 4) {
510 writel_relaxed(*(u32 *)(buf + i), prestera_ldr_wr_ptr(fw));
511 prestera_ldr_wr_idx_move(fw, 4);
514 prestera_ldr_wr_idx_commit(fw);
518 static int prestera_ldr_fw_send(struct prestera_fw *fw,
519 const char *img, u32 fw_size)
525 err = prestera_ldr_wait_reg32(fw, PRESTERA_LDR_STATUS_REG,
526 PRESTERA_LDR_STATUS_IMG_DL,
529 dev_err(fw->dev.dev, "Loader is not ready to load image\n");
533 for (pos = 0; pos < fw_size; pos += PRESTERA_FW_BLK_SZ) {
534 if (pos + PRESTERA_FW_BLK_SZ > fw_size)
537 err = prestera_ldr_send(fw, img + pos, PRESTERA_FW_BLK_SZ);
543 err = prestera_ldr_send(fw, img + pos, fw_size - pos);
548 err = prestera_ldr_wait_dl_finish(fw);
552 status = prestera_ldr_read(fw, PRESTERA_LDR_STATUS_REG);
555 case PRESTERA_LDR_STATUS_INVALID_IMG:
556 dev_err(fw->dev.dev, "FW img has bad CRC\n");
558 case PRESTERA_LDR_STATUS_NOMEM:
559 dev_err(fw->dev.dev, "Loader has no enough mem\n");
566 static void prestera_fw_rev_parse(const struct prestera_fw_header *hdr,
567 struct prestera_fw_rev *rev)
569 u32 version = be32_to_cpu(hdr->version_value);
571 rev->maj = PRESTERA_FW_VER_MAJ(version);
572 rev->min = PRESTERA_FW_VER_MIN(version);
573 rev->sub = PRESTERA_FW_VER_PATCH(version);
576 static int prestera_fw_rev_check(struct prestera_fw *fw)
578 struct prestera_fw_rev *rev = &fw->dev.fw_rev;
579 u16 maj_supp = PRESTERA_SUPP_FW_MAJ_VER;
580 u16 min_supp = PRESTERA_SUPP_FW_MIN_VER;
582 if (rev->maj == maj_supp && rev->min >= min_supp)
585 dev_err(fw->dev.dev, "Driver supports FW version only '%u.%u.x'",
586 PRESTERA_SUPP_FW_MAJ_VER, PRESTERA_SUPP_FW_MIN_VER);
591 static int prestera_fw_hdr_parse(struct prestera_fw *fw,
592 const struct firmware *img)
594 struct prestera_fw_header *hdr = (struct prestera_fw_header *)img->data;
595 struct prestera_fw_rev *rev = &fw->dev.fw_rev;
598 magic = be32_to_cpu(hdr->magic_number);
599 if (magic != PRESTERA_FW_HDR_MAGIC) {
600 dev_err(fw->dev.dev, "FW img hdr magic is invalid");
604 prestera_fw_rev_parse(hdr, rev);
606 dev_info(fw->dev.dev, "FW version '%u.%u.%u'\n",
607 rev->maj, rev->min, rev->sub);
609 return prestera_fw_rev_check(fw);
612 static int prestera_fw_load(struct prestera_fw *fw)
614 size_t hlen = sizeof(struct prestera_fw_header);
615 const struct firmware *f;
619 err = prestera_ldr_wait_reg32(fw, PRESTERA_LDR_READY_REG,
620 PRESTERA_LDR_READY_MAGIC,
623 dev_err(fw->dev.dev, "waiting for FW loader is timed out");
627 fw->ldr_ring_buf = fw->ldr_regs +
628 prestera_ldr_read(fw, PRESTERA_LDR_BUF_OFFS_REG);
631 prestera_ldr_read(fw, PRESTERA_LDR_BUF_SIZE_REG);
635 snprintf(fw_path, sizeof(fw_path), PRESTERA_FW_PATH_FMT,
636 PRESTERA_SUPP_FW_MAJ_VER, PRESTERA_SUPP_FW_MIN_VER);
638 err = reject_firmware_direct(&f, fw_path, fw->dev.dev);
640 dev_err(fw->dev.dev, "failed to request firmware file\n");
644 err = prestera_fw_hdr_parse(fw, f);
646 dev_err(fw->dev.dev, "FW image header is invalid\n");
650 prestera_ldr_write(fw, PRESTERA_LDR_IMG_SIZE_REG, f->size - hlen);
651 prestera_ldr_write(fw, PRESTERA_LDR_CTL_REG, PRESTERA_LDR_CTL_DL_START);
653 dev_info(fw->dev.dev, "Loading %s ...", fw_path);
655 err = prestera_ldr_fw_send(fw, f->data + hlen, f->size - hlen);
662 static int prestera_pci_probe(struct pci_dev *pdev,
663 const struct pci_device_id *id)
665 const char *driver_name = pdev->driver->name;
666 struct prestera_fw *fw;
669 err = pcim_enable_device(pdev);
673 err = pcim_iomap_regions(pdev, BIT(PRESTERA_PCI_BAR_FW) |
674 BIT(PRESTERA_PCI_BAR_PP),
679 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(30));
681 dev_err(&pdev->dev, "fail to set DMA mask\n");
685 pci_set_master(pdev);
687 fw = devm_kzalloc(&pdev->dev, sizeof(*fw), GFP_KERNEL);
690 goto err_pci_dev_alloc;
693 fw->dev.ctl_regs = pcim_iomap_table(pdev)[PRESTERA_PCI_BAR_FW];
694 fw->dev.pp_regs = pcim_iomap_table(pdev)[PRESTERA_PCI_BAR_PP];
695 fw->dev.dev = &pdev->dev;
697 pci_set_drvdata(pdev, fw);
699 err = prestera_fw_init(fw);
701 goto err_prestera_fw_init;
703 dev_info(fw->dev.dev, "Prestera FW is ready\n");
705 fw->wq = alloc_workqueue("prestera_fw_wq", WQ_HIGHPRI, 1);
711 INIT_WORK(&fw->evt_work, prestera_fw_evt_work_fn);
713 err = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
715 dev_err(&pdev->dev, "MSI IRQ init failed\n");
719 err = request_irq(pci_irq_vector(pdev, 0), prestera_pci_irq_handler,
722 dev_err(&pdev->dev, "fail to request IRQ\n");
723 goto err_request_irq;
726 err = prestera_device_register(&fw->dev);
728 goto err_prestera_dev_register;
732 err_prestera_dev_register:
733 free_irq(pci_irq_vector(pdev, 0), fw);
735 pci_free_irq_vectors(pdev);
737 destroy_workqueue(fw->wq);
739 prestera_fw_uninit(fw);
740 err_prestera_fw_init:
746 static void prestera_pci_remove(struct pci_dev *pdev)
748 struct prestera_fw *fw = pci_get_drvdata(pdev);
750 prestera_device_unregister(&fw->dev);
751 free_irq(pci_irq_vector(pdev, 0), fw);
752 pci_free_irq_vectors(pdev);
753 destroy_workqueue(fw->wq);
754 prestera_fw_uninit(fw);
757 static const struct pci_device_id prestera_pci_devices[] = {
758 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0xC804) },
761 MODULE_DEVICE_TABLE(pci, prestera_pci_devices);
763 static struct pci_driver prestera_pci_driver = {
764 .name = "Prestera DX",
765 .id_table = prestera_pci_devices,
766 .probe = prestera_pci_probe,
767 .remove = prestera_pci_remove,
769 module_pci_driver(prestera_pci_driver);
771 MODULE_LICENSE("Dual BSD/GPL");
772 MODULE_DESCRIPTION("Marvell Prestera switch PCI interface");