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/bitfield.h>
5 #include <linux/circ_buf.h>
6 #include <linux/device.h>
7 #include <linux/firmware.h>
8 #include <linux/iopoll.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/pci.h>
15 #define PRESTERA_MSG_MAX_SIZE 1500
17 #define PRESTERA_SUPP_FW_MAJ_VER 2
18 #define PRESTERA_SUPP_FW_MIN_VER 0
20 #define PRESTERA_FW_PATH_FMT "mrvl/prestera/mvsw_prestera_fw-v%u.%u.img"
22 #define PRESTERA_FW_HDR_MAGIC 0x351D9D06
23 #define PRESTERA_FW_DL_TIMEOUT_MS 50000
24 #define PRESTERA_FW_BLK_SZ 1024
26 #define PRESTERA_FW_VER_MAJ_MUL 1000000
27 #define PRESTERA_FW_VER_MIN_MUL 1000
29 #define PRESTERA_FW_VER_MAJ(v) ((v) / PRESTERA_FW_VER_MAJ_MUL)
31 #define PRESTERA_FW_VER_MIN(v) \
32 (((v) - (PRESTERA_FW_VER_MAJ(v) * PRESTERA_FW_VER_MAJ_MUL)) / \
33 PRESTERA_FW_VER_MIN_MUL)
35 #define PRESTERA_FW_VER_PATCH(v) \
36 ((v) - (PRESTERA_FW_VER_MAJ(v) * PRESTERA_FW_VER_MAJ_MUL) - \
37 (PRESTERA_FW_VER_MIN(v) * PRESTERA_FW_VER_MIN_MUL))
39 enum prestera_pci_bar_t {
40 PRESTERA_PCI_BAR_FW = 2,
41 PRESTERA_PCI_BAR_PP = 4,
44 struct prestera_fw_header {
50 struct prestera_ldr_regs {
67 #define PRESTERA_LDR_REG_OFFSET(f) offsetof(struct prestera_ldr_regs, f)
69 #define PRESTERA_LDR_READY_MAGIC 0xf00dfeed
71 #define PRESTERA_LDR_STATUS_IMG_DL BIT(0)
72 #define PRESTERA_LDR_STATUS_START_FW BIT(1)
73 #define PRESTERA_LDR_STATUS_INVALID_IMG BIT(2)
74 #define PRESTERA_LDR_STATUS_NOMEM BIT(3)
76 #define PRESTERA_LDR_REG_BASE(fw) ((fw)->ldr_regs)
77 #define PRESTERA_LDR_REG_ADDR(fw, reg) (PRESTERA_LDR_REG_BASE(fw) + (reg))
79 /* fw loader registers */
80 #define PRESTERA_LDR_READY_REG PRESTERA_LDR_REG_OFFSET(ldr_ready)
81 #define PRESTERA_LDR_IMG_SIZE_REG PRESTERA_LDR_REG_OFFSET(ldr_img_size)
82 #define PRESTERA_LDR_CTL_REG PRESTERA_LDR_REG_OFFSET(ldr_ctl_flags)
83 #define PRESTERA_LDR_BUF_SIZE_REG PRESTERA_LDR_REG_OFFSET(ldr_buf_size)
84 #define PRESTERA_LDR_BUF_OFFS_REG PRESTERA_LDR_REG_OFFSET(ldr_buf_offs)
85 #define PRESTERA_LDR_BUF_RD_REG PRESTERA_LDR_REG_OFFSET(ldr_buf_rd)
86 #define PRESTERA_LDR_BUF_WR_REG PRESTERA_LDR_REG_OFFSET(ldr_buf_wr)
87 #define PRESTERA_LDR_STATUS_REG PRESTERA_LDR_REG_OFFSET(ldr_status)
89 #define PRESTERA_LDR_CTL_DL_START BIT(0)
91 #define PRESTERA_EVT_QNUM_MAX 4
93 struct prestera_fw_evtq_regs {
102 struct prestera_fw_regs {
118 struct prestera_fw_evtq_regs evtq_list[PRESTERA_EVT_QNUM_MAX];
121 #define PRESTERA_FW_REG_OFFSET(f) offsetof(struct prestera_fw_regs, f)
123 #define PRESTERA_FW_READY_MAGIC 0xcafebabe
126 #define PRESTERA_FW_READY_REG PRESTERA_FW_REG_OFFSET(fw_ready)
128 #define PRESTERA_CMD_BUF_OFFS_REG PRESTERA_FW_REG_OFFSET(cmd_offs)
129 #define PRESTERA_CMD_BUF_LEN_REG PRESTERA_FW_REG_OFFSET(cmd_len)
130 #define PRESTERA_EVT_BUF_OFFS_REG PRESTERA_FW_REG_OFFSET(evt_offs)
131 #define PRESTERA_EVT_QNUM_REG PRESTERA_FW_REG_OFFSET(evt_qnum)
133 #define PRESTERA_CMD_REQ_CTL_REG PRESTERA_FW_REG_OFFSET(cmd_req_ctl)
134 #define PRESTERA_CMD_REQ_LEN_REG PRESTERA_FW_REG_OFFSET(cmd_req_len)
136 #define PRESTERA_CMD_RCV_CTL_REG PRESTERA_FW_REG_OFFSET(cmd_rcv_ctl)
137 #define PRESTERA_CMD_RCV_LEN_REG PRESTERA_FW_REG_OFFSET(cmd_rcv_len)
138 #define PRESTERA_FW_STATUS_REG PRESTERA_FW_REG_OFFSET(fw_status)
139 #define PRESTERA_RX_STATUS_REG PRESTERA_FW_REG_OFFSET(rx_status)
141 /* PRESTERA_CMD_REQ_CTL_REG flags */
142 #define PRESTERA_CMD_F_REQ_SENT BIT(0)
143 #define PRESTERA_CMD_F_REPL_RCVD BIT(1)
145 /* PRESTERA_CMD_RCV_CTL_REG flags */
146 #define PRESTERA_CMD_F_REPL_SENT BIT(0)
148 #define PRESTERA_FW_EVT_CTL_STATUS_MASK GENMASK(1, 0)
150 #define PRESTERA_FW_EVT_CTL_STATUS_ON 0
151 #define PRESTERA_FW_EVT_CTL_STATUS_OFF 1
153 #define PRESTERA_EVTQ_REG_OFFSET(q, f) \
154 (PRESTERA_FW_REG_OFFSET(evtq_list) + \
155 (q) * sizeof(struct prestera_fw_evtq_regs) + \
156 offsetof(struct prestera_fw_evtq_regs, f))
158 #define PRESTERA_EVTQ_RD_IDX_REG(q) PRESTERA_EVTQ_REG_OFFSET(q, rd_idx)
159 #define PRESTERA_EVTQ_WR_IDX_REG(q) PRESTERA_EVTQ_REG_OFFSET(q, wr_idx)
160 #define PRESTERA_EVTQ_OFFS_REG(q) PRESTERA_EVTQ_REG_OFFSET(q, offs)
161 #define PRESTERA_EVTQ_LEN_REG(q) PRESTERA_EVTQ_REG_OFFSET(q, len)
163 #define PRESTERA_FW_REG_BASE(fw) ((fw)->dev.ctl_regs)
164 #define PRESTERA_FW_REG_ADDR(fw, reg) PRESTERA_FW_REG_BASE((fw)) + (reg)
166 #define PRESTERA_FW_CMD_DEFAULT_WAIT_MS 30000
167 #define PRESTERA_FW_READY_WAIT_MS 20000
169 struct prestera_fw_evtq {
175 struct workqueue_struct *wq;
176 struct prestera_device dev;
177 u8 __iomem *ldr_regs;
178 u8 __iomem *ldr_ring_buf;
181 struct mutex cmd_mtx; /* serialize access to dev->send_req */
183 u8 __iomem *cmd_mbox;
184 struct prestera_fw_evtq evt_queue[PRESTERA_EVT_QNUM_MAX];
186 struct work_struct evt_work;
191 static int prestera_fw_load(struct prestera_fw *fw);
193 static void prestera_fw_write(struct prestera_fw *fw, u32 reg, u32 val)
195 writel(val, PRESTERA_FW_REG_ADDR(fw, reg));
198 static u32 prestera_fw_read(struct prestera_fw *fw, u32 reg)
200 return readl(PRESTERA_FW_REG_ADDR(fw, reg));
203 static u32 prestera_fw_evtq_len(struct prestera_fw *fw, u8 qid)
205 return fw->evt_queue[qid].len;
208 static u32 prestera_fw_evtq_avail(struct prestera_fw *fw, u8 qid)
210 u32 wr_idx = prestera_fw_read(fw, PRESTERA_EVTQ_WR_IDX_REG(qid));
211 u32 rd_idx = prestera_fw_read(fw, PRESTERA_EVTQ_RD_IDX_REG(qid));
213 return CIRC_CNT(wr_idx, rd_idx, prestera_fw_evtq_len(fw, qid));
216 static void prestera_fw_evtq_rd_set(struct prestera_fw *fw,
219 u32 rd_idx = idx & (prestera_fw_evtq_len(fw, qid) - 1);
221 prestera_fw_write(fw, PRESTERA_EVTQ_RD_IDX_REG(qid), rd_idx);
224 static u8 __iomem *prestera_fw_evtq_buf(struct prestera_fw *fw, u8 qid)
226 return fw->evt_queue[qid].addr;
229 static u32 prestera_fw_evtq_read32(struct prestera_fw *fw, u8 qid)
231 u32 rd_idx = prestera_fw_read(fw, PRESTERA_EVTQ_RD_IDX_REG(qid));
234 val = readl(prestera_fw_evtq_buf(fw, qid) + rd_idx);
235 prestera_fw_evtq_rd_set(fw, qid, rd_idx + 4);
239 static ssize_t prestera_fw_evtq_read_buf(struct prestera_fw *fw,
240 u8 qid, void *buf, size_t len)
242 u32 idx = prestera_fw_read(fw, PRESTERA_EVTQ_RD_IDX_REG(qid));
243 u8 __iomem *evtq_addr = prestera_fw_evtq_buf(fw, qid);
247 for (i = 0; i < len / 4; buf32++, i++) {
248 *buf32 = readl_relaxed(evtq_addr + idx);
249 idx = (idx + 4) & (prestera_fw_evtq_len(fw, qid) - 1);
252 prestera_fw_evtq_rd_set(fw, qid, idx);
257 static u8 prestera_fw_evtq_pick(struct prestera_fw *fw)
261 for (qid = 0; qid < fw->evt_qnum; qid++) {
262 if (prestera_fw_evtq_avail(fw, qid) >= 4)
266 return PRESTERA_EVT_QNUM_MAX;
269 static void prestera_fw_evt_ctl_status_set(struct prestera_fw *fw, u32 val)
271 u32 status = prestera_fw_read(fw, PRESTERA_FW_STATUS_REG);
273 u32p_replace_bits(&status, val, PRESTERA_FW_EVT_CTL_STATUS_MASK);
275 prestera_fw_write(fw, PRESTERA_FW_STATUS_REG, status);
278 static void prestera_fw_evt_work_fn(struct work_struct *work)
280 struct prestera_fw *fw;
284 fw = container_of(work, struct prestera_fw, evt_work);
287 prestera_fw_evt_ctl_status_set(fw, PRESTERA_FW_EVT_CTL_STATUS_OFF);
289 while ((qid = prestera_fw_evtq_pick(fw)) < PRESTERA_EVT_QNUM_MAX) {
293 len = prestera_fw_evtq_read32(fw, qid);
294 idx = prestera_fw_read(fw, PRESTERA_EVTQ_RD_IDX_REG(qid));
296 WARN_ON(prestera_fw_evtq_avail(fw, qid) < len);
298 if (WARN_ON(len > PRESTERA_MSG_MAX_SIZE)) {
299 prestera_fw_evtq_rd_set(fw, qid, idx + len);
303 prestera_fw_evtq_read_buf(fw, qid, msg, len);
305 if (fw->dev.recv_msg)
306 fw->dev.recv_msg(&fw->dev, msg, len);
309 prestera_fw_evt_ctl_status_set(fw, PRESTERA_FW_EVT_CTL_STATUS_ON);
312 static int prestera_fw_wait_reg32(struct prestera_fw *fw, u32 reg, u32 cmp,
315 u8 __iomem *addr = PRESTERA_FW_REG_ADDR(fw, reg);
318 return readl_poll_timeout(addr, val, cmp == val,
319 1 * USEC_PER_MSEC, waitms * USEC_PER_MSEC);
322 static int prestera_fw_cmd_send(struct prestera_fw *fw,
323 void *in_msg, size_t in_size,
324 void *out_msg, size_t out_size,
331 waitms = PRESTERA_FW_CMD_DEFAULT_WAIT_MS;
333 if (ALIGN(in_size, 4) > fw->cmd_mbox_len)
336 /* wait for finish previous reply from FW */
337 err = prestera_fw_wait_reg32(fw, PRESTERA_CMD_RCV_CTL_REG, 0, 30);
339 dev_err(fw->dev.dev, "finish reply from FW is timed out\n");
343 prestera_fw_write(fw, PRESTERA_CMD_REQ_LEN_REG, in_size);
344 memcpy_toio(fw->cmd_mbox, in_msg, in_size);
346 prestera_fw_write(fw, PRESTERA_CMD_REQ_CTL_REG, PRESTERA_CMD_F_REQ_SENT);
348 /* wait for reply from FW */
349 err = prestera_fw_wait_reg32(fw, PRESTERA_CMD_RCV_CTL_REG,
350 PRESTERA_CMD_F_REPL_SENT, waitms);
352 dev_err(fw->dev.dev, "reply from FW is timed out\n");
356 ret_size = prestera_fw_read(fw, PRESTERA_CMD_RCV_LEN_REG);
357 if (ret_size > out_size) {
358 dev_err(fw->dev.dev, "ret_size (%u) > out_len(%zu)\n",
364 memcpy_fromio(out_msg, fw->cmd_mbox + in_size, ret_size);
367 prestera_fw_write(fw, PRESTERA_CMD_REQ_CTL_REG, PRESTERA_CMD_F_REPL_RCVD);
371 static int prestera_fw_send_req(struct prestera_device *dev,
372 void *in_msg, size_t in_size, void *out_msg,
373 size_t out_size, unsigned int waitms)
375 struct prestera_fw *fw;
378 fw = container_of(dev, struct prestera_fw, dev);
380 mutex_lock(&fw->cmd_mtx);
381 ret = prestera_fw_cmd_send(fw, in_msg, in_size, out_msg, out_size, waitms);
382 mutex_unlock(&fw->cmd_mtx);
387 static int prestera_fw_init(struct prestera_fw *fw)
393 fw->dev.send_req = prestera_fw_send_req;
394 fw->ldr_regs = fw->dev.ctl_regs;
396 err = prestera_fw_load(fw);
400 err = prestera_fw_wait_reg32(fw, PRESTERA_FW_READY_REG,
401 PRESTERA_FW_READY_MAGIC,
402 PRESTERA_FW_READY_WAIT_MS);
404 dev_err(fw->dev.dev, "FW failed to start\n");
408 base = fw->dev.ctl_regs;
410 fw->cmd_mbox = base + prestera_fw_read(fw, PRESTERA_CMD_BUF_OFFS_REG);
411 fw->cmd_mbox_len = prestera_fw_read(fw, PRESTERA_CMD_BUF_LEN_REG);
412 mutex_init(&fw->cmd_mtx);
414 fw->evt_buf = base + prestera_fw_read(fw, PRESTERA_EVT_BUF_OFFS_REG);
415 fw->evt_qnum = prestera_fw_read(fw, PRESTERA_EVT_QNUM_REG);
416 fw->evt_msg = kmalloc(PRESTERA_MSG_MAX_SIZE, GFP_KERNEL);
420 for (qid = 0; qid < fw->evt_qnum; qid++) {
421 u32 offs = prestera_fw_read(fw, PRESTERA_EVTQ_OFFS_REG(qid));
422 struct prestera_fw_evtq *evtq = &fw->evt_queue[qid];
424 evtq->len = prestera_fw_read(fw, PRESTERA_EVTQ_LEN_REG(qid));
425 evtq->addr = fw->evt_buf + offs;
431 static void prestera_fw_uninit(struct prestera_fw *fw)
436 static irqreturn_t prestera_pci_irq_handler(int irq, void *dev_id)
438 struct prestera_fw *fw = dev_id;
440 if (prestera_fw_read(fw, PRESTERA_RX_STATUS_REG)) {
441 prestera_fw_write(fw, PRESTERA_RX_STATUS_REG, 0);
443 if (fw->dev.recv_pkt)
444 fw->dev.recv_pkt(&fw->dev);
447 queue_work(fw->wq, &fw->evt_work);
452 static void prestera_ldr_write(struct prestera_fw *fw, u32 reg, u32 val)
454 writel(val, PRESTERA_LDR_REG_ADDR(fw, reg));
457 static u32 prestera_ldr_read(struct prestera_fw *fw, u32 reg)
459 return readl(PRESTERA_LDR_REG_ADDR(fw, reg));
462 static int prestera_ldr_wait_reg32(struct prestera_fw *fw,
463 u32 reg, u32 cmp, unsigned int waitms)
465 u8 __iomem *addr = PRESTERA_LDR_REG_ADDR(fw, reg);
468 return readl_poll_timeout(addr, val, cmp == val,
469 10 * USEC_PER_MSEC, waitms * USEC_PER_MSEC);
472 static u32 prestera_ldr_wait_buf(struct prestera_fw *fw, size_t len)
474 u8 __iomem *addr = PRESTERA_LDR_REG_ADDR(fw, PRESTERA_LDR_BUF_RD_REG);
475 u32 buf_len = fw->ldr_buf_len;
476 u32 wr_idx = fw->ldr_wr_idx;
479 return readl_poll_timeout(addr, rd_idx,
480 CIRC_SPACE(wr_idx, rd_idx, buf_len) >= len,
481 1 * USEC_PER_MSEC, 100 * USEC_PER_MSEC);
484 static int prestera_ldr_wait_dl_finish(struct prestera_fw *fw)
486 u8 __iomem *addr = PRESTERA_LDR_REG_ADDR(fw, PRESTERA_LDR_STATUS_REG);
487 unsigned long mask = ~(PRESTERA_LDR_STATUS_IMG_DL);
491 err = readl_poll_timeout(addr, val, val & mask, 10 * USEC_PER_MSEC,
492 PRESTERA_FW_DL_TIMEOUT_MS * USEC_PER_MSEC);
494 dev_err(fw->dev.dev, "Timeout to load FW img [state=%d]",
495 prestera_ldr_read(fw, PRESTERA_LDR_STATUS_REG));
502 static void prestera_ldr_wr_idx_move(struct prestera_fw *fw, unsigned int n)
504 fw->ldr_wr_idx = (fw->ldr_wr_idx + (n)) & (fw->ldr_buf_len - 1);
507 static void prestera_ldr_wr_idx_commit(struct prestera_fw *fw)
509 prestera_ldr_write(fw, PRESTERA_LDR_BUF_WR_REG, fw->ldr_wr_idx);
512 static u8 __iomem *prestera_ldr_wr_ptr(struct prestera_fw *fw)
514 return fw->ldr_ring_buf + fw->ldr_wr_idx;
517 static int prestera_ldr_send(struct prestera_fw *fw, const u8 *buf, size_t len)
522 err = prestera_ldr_wait_buf(fw, len);
524 dev_err(fw->dev.dev, "failed wait for sending firmware\n");
528 for (i = 0; i < len; i += 4) {
529 writel_relaxed(*(u32 *)(buf + i), prestera_ldr_wr_ptr(fw));
530 prestera_ldr_wr_idx_move(fw, 4);
533 prestera_ldr_wr_idx_commit(fw);
537 static int prestera_ldr_fw_send(struct prestera_fw *fw,
538 const char *img, u32 fw_size)
544 err = prestera_ldr_wait_reg32(fw, PRESTERA_LDR_STATUS_REG,
545 PRESTERA_LDR_STATUS_IMG_DL,
548 dev_err(fw->dev.dev, "Loader is not ready to load image\n");
552 for (pos = 0; pos < fw_size; pos += PRESTERA_FW_BLK_SZ) {
553 if (pos + PRESTERA_FW_BLK_SZ > fw_size)
556 err = prestera_ldr_send(fw, img + pos, PRESTERA_FW_BLK_SZ);
562 err = prestera_ldr_send(fw, img + pos, fw_size - pos);
567 err = prestera_ldr_wait_dl_finish(fw);
571 status = prestera_ldr_read(fw, PRESTERA_LDR_STATUS_REG);
574 case PRESTERA_LDR_STATUS_INVALID_IMG:
575 dev_err(fw->dev.dev, "FW img has bad CRC\n");
577 case PRESTERA_LDR_STATUS_NOMEM:
578 dev_err(fw->dev.dev, "Loader has no enough mem\n");
585 static void prestera_fw_rev_parse(const struct prestera_fw_header *hdr,
586 struct prestera_fw_rev *rev)
588 u32 version = be32_to_cpu(hdr->version_value);
590 rev->maj = PRESTERA_FW_VER_MAJ(version);
591 rev->min = PRESTERA_FW_VER_MIN(version);
592 rev->sub = PRESTERA_FW_VER_PATCH(version);
595 static int prestera_fw_rev_check(struct prestera_fw *fw)
597 struct prestera_fw_rev *rev = &fw->dev.fw_rev;
598 u16 maj_supp = PRESTERA_SUPP_FW_MAJ_VER;
599 u16 min_supp = PRESTERA_SUPP_FW_MIN_VER;
601 if (rev->maj == maj_supp && rev->min >= min_supp)
604 dev_err(fw->dev.dev, "Driver supports FW version only '%u.%u.x'",
605 PRESTERA_SUPP_FW_MAJ_VER, PRESTERA_SUPP_FW_MIN_VER);
610 static int prestera_fw_hdr_parse(struct prestera_fw *fw,
611 const struct firmware *img)
613 struct prestera_fw_header *hdr = (struct prestera_fw_header *)img->data;
614 struct prestera_fw_rev *rev = &fw->dev.fw_rev;
617 magic = be32_to_cpu(hdr->magic_number);
618 if (magic != PRESTERA_FW_HDR_MAGIC) {
619 dev_err(fw->dev.dev, "FW img hdr magic is invalid");
623 prestera_fw_rev_parse(hdr, rev);
625 dev_info(fw->dev.dev, "FW version '%u.%u.%u'\n",
626 rev->maj, rev->min, rev->sub);
628 return prestera_fw_rev_check(fw);
631 static int prestera_fw_load(struct prestera_fw *fw)
633 size_t hlen = sizeof(struct prestera_fw_header);
634 const struct firmware *f;
638 err = prestera_ldr_wait_reg32(fw, PRESTERA_LDR_READY_REG,
639 PRESTERA_LDR_READY_MAGIC,
642 dev_err(fw->dev.dev, "waiting for FW loader is timed out");
646 fw->ldr_ring_buf = fw->ldr_regs +
647 prestera_ldr_read(fw, PRESTERA_LDR_BUF_OFFS_REG);
650 prestera_ldr_read(fw, PRESTERA_LDR_BUF_SIZE_REG);
654 snprintf(fw_path, sizeof(fw_path), PRESTERA_FW_PATH_FMT,
655 PRESTERA_SUPP_FW_MAJ_VER, PRESTERA_SUPP_FW_MIN_VER);
657 err = request_firmware_direct(&f, fw_path, fw->dev.dev);
659 dev_err(fw->dev.dev, "failed to request firmware file\n");
663 err = prestera_fw_hdr_parse(fw, f);
665 dev_err(fw->dev.dev, "FW image header is invalid\n");
669 prestera_ldr_write(fw, PRESTERA_LDR_IMG_SIZE_REG, f->size - hlen);
670 prestera_ldr_write(fw, PRESTERA_LDR_CTL_REG, PRESTERA_LDR_CTL_DL_START);
672 dev_info(fw->dev.dev, "Loading %s ...", fw_path);
674 err = prestera_ldr_fw_send(fw, f->data + hlen, f->size - hlen);
681 static int prestera_pci_probe(struct pci_dev *pdev,
682 const struct pci_device_id *id)
684 const char *driver_name = pdev->driver->name;
685 struct prestera_fw *fw;
688 err = pcim_enable_device(pdev);
692 err = pcim_iomap_regions(pdev, BIT(PRESTERA_PCI_BAR_FW) |
693 BIT(PRESTERA_PCI_BAR_PP),
698 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(30));
700 dev_err(&pdev->dev, "fail to set DMA mask\n");
704 pci_set_master(pdev);
706 fw = devm_kzalloc(&pdev->dev, sizeof(*fw), GFP_KERNEL);
709 goto err_pci_dev_alloc;
712 fw->dev.ctl_regs = pcim_iomap_table(pdev)[PRESTERA_PCI_BAR_FW];
713 fw->dev.pp_regs = pcim_iomap_table(pdev)[PRESTERA_PCI_BAR_PP];
714 fw->dev.dev = &pdev->dev;
716 pci_set_drvdata(pdev, fw);
718 err = prestera_fw_init(fw);
720 goto err_prestera_fw_init;
722 dev_info(fw->dev.dev, "Prestera FW is ready\n");
724 fw->wq = alloc_workqueue("prestera_fw_wq", WQ_HIGHPRI, 1);
730 INIT_WORK(&fw->evt_work, prestera_fw_evt_work_fn);
732 err = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
734 dev_err(&pdev->dev, "MSI IRQ init failed\n");
738 err = request_irq(pci_irq_vector(pdev, 0), prestera_pci_irq_handler,
741 dev_err(&pdev->dev, "fail to request IRQ\n");
742 goto err_request_irq;
745 err = prestera_device_register(&fw->dev);
747 goto err_prestera_dev_register;
751 err_prestera_dev_register:
752 free_irq(pci_irq_vector(pdev, 0), fw);
754 pci_free_irq_vectors(pdev);
756 destroy_workqueue(fw->wq);
758 prestera_fw_uninit(fw);
759 err_prestera_fw_init:
765 static void prestera_pci_remove(struct pci_dev *pdev)
767 struct prestera_fw *fw = pci_get_drvdata(pdev);
769 prestera_device_unregister(&fw->dev);
770 free_irq(pci_irq_vector(pdev, 0), fw);
771 pci_free_irq_vectors(pdev);
772 destroy_workqueue(fw->wq);
773 prestera_fw_uninit(fw);
776 static const struct pci_device_id prestera_pci_devices[] = {
777 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0xC804) },
778 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0xC80C) },
781 MODULE_DEVICE_TABLE(pci, prestera_pci_devices);
783 static struct pci_driver prestera_pci_driver = {
784 .name = "Prestera DX",
785 .id_table = prestera_pci_devices,
786 .probe = prestera_pci_probe,
787 .remove = prestera_pci_remove,
789 module_pci_driver(prestera_pci_driver);
791 MODULE_LICENSE("Dual BSD/GPL");
792 MODULE_DESCRIPTION("Marvell Prestera switch PCI interface");