2 * Copyright (c) 2016 Qualcomm Atheros, Inc. All rights reserved.
3 * Copyright (c) 2015 The Linux Foundation. All rights reserved.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/module.h>
19 #include <linux/of_device.h>
20 #include <linux/clk.h>
21 #include <linux/reset.h>
27 static const struct of_device_id ath10k_ahb_of_match[] = {
28 { .compatible = "qcom,ipq4019-wifi",
29 .data = (void *)ATH10K_HW_QCA4019
34 MODULE_DEVICE_TABLE(of, ath10k_ahb_of_match);
36 static inline struct ath10k_ahb *ath10k_ahb_priv(struct ath10k *ar)
38 return &((struct ath10k_pci *)ar->drv_priv)->ahb[0];
41 static void ath10k_ahb_write32(struct ath10k *ar, u32 offset, u32 value)
43 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
45 iowrite32(value, ar_ahb->mem + offset);
48 static u32 ath10k_ahb_read32(struct ath10k *ar, u32 offset)
50 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
52 return ioread32(ar_ahb->mem + offset);
55 static u32 ath10k_ahb_gcc_read32(struct ath10k *ar, u32 offset)
57 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
59 return ioread32(ar_ahb->gcc_mem + offset);
62 static void ath10k_ahb_tcsr_write32(struct ath10k *ar, u32 offset, u32 value)
64 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
66 iowrite32(value, ar_ahb->tcsr_mem + offset);
69 static u32 ath10k_ahb_tcsr_read32(struct ath10k *ar, u32 offset)
71 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
73 return ioread32(ar_ahb->tcsr_mem + offset);
76 static u32 ath10k_ahb_soc_read32(struct ath10k *ar, u32 addr)
78 return ath10k_ahb_read32(ar, RTC_SOC_BASE_ADDRESS + addr);
81 static int ath10k_ahb_get_num_banks(struct ath10k *ar)
83 if (ar->hw_rev == ATH10K_HW_QCA4019)
86 ath10k_warn(ar, "unknown number of banks, assuming 1\n");
90 static int ath10k_ahb_clock_init(struct ath10k *ar)
92 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
95 dev = &ar_ahb->pdev->dev;
97 ar_ahb->cmd_clk = devm_clk_get(dev, "wifi_wcss_cmd");
98 if (IS_ERR_OR_NULL(ar_ahb->cmd_clk)) {
99 ath10k_err(ar, "failed to get cmd clk: %ld\n",
100 PTR_ERR(ar_ahb->cmd_clk));
101 return ar_ahb->cmd_clk ? PTR_ERR(ar_ahb->cmd_clk) : -ENODEV;
104 ar_ahb->ref_clk = devm_clk_get(dev, "wifi_wcss_ref");
105 if (IS_ERR_OR_NULL(ar_ahb->ref_clk)) {
106 ath10k_err(ar, "failed to get ref clk: %ld\n",
107 PTR_ERR(ar_ahb->ref_clk));
108 return ar_ahb->ref_clk ? PTR_ERR(ar_ahb->ref_clk) : -ENODEV;
111 ar_ahb->rtc_clk = devm_clk_get(dev, "wifi_wcss_rtc");
112 if (IS_ERR_OR_NULL(ar_ahb->rtc_clk)) {
113 ath10k_err(ar, "failed to get rtc clk: %ld\n",
114 PTR_ERR(ar_ahb->rtc_clk));
115 return ar_ahb->rtc_clk ? PTR_ERR(ar_ahb->rtc_clk) : -ENODEV;
121 static void ath10k_ahb_clock_deinit(struct ath10k *ar)
123 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
125 ar_ahb->cmd_clk = NULL;
126 ar_ahb->ref_clk = NULL;
127 ar_ahb->rtc_clk = NULL;
130 static int ath10k_ahb_clock_enable(struct ath10k *ar)
132 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
136 dev = &ar_ahb->pdev->dev;
138 if (IS_ERR_OR_NULL(ar_ahb->cmd_clk) ||
139 IS_ERR_OR_NULL(ar_ahb->ref_clk) ||
140 IS_ERR_OR_NULL(ar_ahb->rtc_clk)) {
141 ath10k_err(ar, "clock(s) is/are not initialized\n");
146 ret = clk_prepare_enable(ar_ahb->cmd_clk);
148 ath10k_err(ar, "failed to enable cmd clk: %d\n", ret);
152 ret = clk_prepare_enable(ar_ahb->ref_clk);
154 ath10k_err(ar, "failed to enable ref clk: %d\n", ret);
155 goto err_cmd_clk_disable;
158 ret = clk_prepare_enable(ar_ahb->rtc_clk);
160 ath10k_err(ar, "failed to enable rtc clk: %d\n", ret);
161 goto err_ref_clk_disable;
167 clk_disable_unprepare(ar_ahb->ref_clk);
170 clk_disable_unprepare(ar_ahb->cmd_clk);
176 static void ath10k_ahb_clock_disable(struct ath10k *ar)
178 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
180 if (!IS_ERR_OR_NULL(ar_ahb->cmd_clk))
181 clk_disable_unprepare(ar_ahb->cmd_clk);
183 if (!IS_ERR_OR_NULL(ar_ahb->ref_clk))
184 clk_disable_unprepare(ar_ahb->ref_clk);
186 if (!IS_ERR_OR_NULL(ar_ahb->rtc_clk))
187 clk_disable_unprepare(ar_ahb->rtc_clk);
190 static int ath10k_ahb_rst_ctrl_init(struct ath10k *ar)
192 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
195 dev = &ar_ahb->pdev->dev;
197 ar_ahb->core_cold_rst = devm_reset_control_get(dev, "wifi_core_cold");
198 if (IS_ERR(ar_ahb->core_cold_rst)) {
199 ath10k_err(ar, "failed to get core cold rst ctrl: %ld\n",
200 PTR_ERR(ar_ahb->core_cold_rst));
201 return PTR_ERR(ar_ahb->core_cold_rst);
204 ar_ahb->radio_cold_rst = devm_reset_control_get(dev, "wifi_radio_cold");
205 if (IS_ERR(ar_ahb->radio_cold_rst)) {
206 ath10k_err(ar, "failed to get radio cold rst ctrl: %ld\n",
207 PTR_ERR(ar_ahb->radio_cold_rst));
208 return PTR_ERR(ar_ahb->radio_cold_rst);
211 ar_ahb->radio_warm_rst = devm_reset_control_get(dev, "wifi_radio_warm");
212 if (IS_ERR(ar_ahb->radio_warm_rst)) {
213 ath10k_err(ar, "failed to get radio warm rst ctrl: %ld\n",
214 PTR_ERR(ar_ahb->radio_warm_rst));
215 return PTR_ERR(ar_ahb->radio_warm_rst);
218 ar_ahb->radio_srif_rst = devm_reset_control_get(dev, "wifi_radio_srif");
219 if (IS_ERR(ar_ahb->radio_srif_rst)) {
220 ath10k_err(ar, "failed to get radio srif rst ctrl: %ld\n",
221 PTR_ERR(ar_ahb->radio_srif_rst));
222 return PTR_ERR(ar_ahb->radio_srif_rst);
225 ar_ahb->cpu_init_rst = devm_reset_control_get(dev, "wifi_cpu_init");
226 if (IS_ERR(ar_ahb->cpu_init_rst)) {
227 ath10k_err(ar, "failed to get cpu init rst ctrl: %ld\n",
228 PTR_ERR(ar_ahb->cpu_init_rst));
229 return PTR_ERR(ar_ahb->cpu_init_rst);
235 static void ath10k_ahb_rst_ctrl_deinit(struct ath10k *ar)
237 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
239 ar_ahb->core_cold_rst = NULL;
240 ar_ahb->radio_cold_rst = NULL;
241 ar_ahb->radio_warm_rst = NULL;
242 ar_ahb->radio_srif_rst = NULL;
243 ar_ahb->cpu_init_rst = NULL;
246 static int ath10k_ahb_release_reset(struct ath10k *ar)
248 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
251 if (IS_ERR_OR_NULL(ar_ahb->radio_cold_rst) ||
252 IS_ERR_OR_NULL(ar_ahb->radio_warm_rst) ||
253 IS_ERR_OR_NULL(ar_ahb->radio_srif_rst) ||
254 IS_ERR_OR_NULL(ar_ahb->cpu_init_rst)) {
255 ath10k_err(ar, "rst ctrl(s) is/are not initialized\n");
259 ret = reset_control_deassert(ar_ahb->radio_cold_rst);
261 ath10k_err(ar, "failed to deassert radio cold rst: %d\n", ret);
265 ret = reset_control_deassert(ar_ahb->radio_warm_rst);
267 ath10k_err(ar, "failed to deassert radio warm rst: %d\n", ret);
271 ret = reset_control_deassert(ar_ahb->radio_srif_rst);
273 ath10k_err(ar, "failed to deassert radio srif rst: %d\n", ret);
277 ret = reset_control_deassert(ar_ahb->cpu_init_rst);
279 ath10k_err(ar, "failed to deassert cpu init rst: %d\n", ret);
286 static void ath10k_ahb_halt_axi_bus(struct ath10k *ar, u32 haltreq_reg,
289 unsigned long timeout;
292 /* Issue halt axi bus request */
293 val = ath10k_ahb_tcsr_read32(ar, haltreq_reg);
294 val |= AHB_AXI_BUS_HALT_REQ;
295 ath10k_ahb_tcsr_write32(ar, haltreq_reg, val);
297 /* Wait for axi bus halted ack */
298 timeout = jiffies + msecs_to_jiffies(ATH10K_AHB_AXI_BUS_HALT_TIMEOUT);
300 val = ath10k_ahb_tcsr_read32(ar, haltack_reg);
301 if (val & AHB_AXI_BUS_HALT_ACK)
305 } while (time_before(jiffies, timeout));
307 if (!(val & AHB_AXI_BUS_HALT_ACK)) {
308 ath10k_err(ar, "failed to halt axi bus: %d\n", val);
312 ath10k_dbg(ar, ATH10K_DBG_AHB, "axi bus halted\n");
315 static void ath10k_ahb_halt_chip(struct ath10k *ar)
317 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
318 u32 core_id, glb_cfg_reg, haltreq_reg, haltack_reg;
322 if (IS_ERR_OR_NULL(ar_ahb->core_cold_rst) ||
323 IS_ERR_OR_NULL(ar_ahb->radio_cold_rst) ||
324 IS_ERR_OR_NULL(ar_ahb->radio_warm_rst) ||
325 IS_ERR_OR_NULL(ar_ahb->radio_srif_rst) ||
326 IS_ERR_OR_NULL(ar_ahb->cpu_init_rst)) {
327 ath10k_err(ar, "rst ctrl(s) is/are not initialized\n");
331 core_id = ath10k_ahb_read32(ar, ATH10K_AHB_WLAN_CORE_ID_REG);
335 glb_cfg_reg = ATH10K_AHB_TCSR_WIFI0_GLB_CFG;
336 haltreq_reg = ATH10K_AHB_TCSR_WCSS0_HALTREQ;
337 haltack_reg = ATH10K_AHB_TCSR_WCSS0_HALTACK;
340 glb_cfg_reg = ATH10K_AHB_TCSR_WIFI1_GLB_CFG;
341 haltreq_reg = ATH10K_AHB_TCSR_WCSS1_HALTREQ;
342 haltack_reg = ATH10K_AHB_TCSR_WCSS1_HALTACK;
345 ath10k_err(ar, "invalid core id %d found, skipping reset sequence\n",
350 ath10k_ahb_halt_axi_bus(ar, haltreq_reg, haltack_reg);
352 val = ath10k_ahb_tcsr_read32(ar, glb_cfg_reg);
353 val |= TCSR_WIFIX_GLB_CFG_DISABLE_CORE_CLK;
354 ath10k_ahb_tcsr_write32(ar, glb_cfg_reg, val);
356 ret = reset_control_assert(ar_ahb->core_cold_rst);
358 ath10k_err(ar, "failed to assert core cold rst: %d\n", ret);
361 ret = reset_control_assert(ar_ahb->radio_cold_rst);
363 ath10k_err(ar, "failed to assert radio cold rst: %d\n", ret);
366 ret = reset_control_assert(ar_ahb->radio_warm_rst);
368 ath10k_err(ar, "failed to assert radio warm rst: %d\n", ret);
371 ret = reset_control_assert(ar_ahb->radio_srif_rst);
373 ath10k_err(ar, "failed to assert radio srif rst: %d\n", ret);
376 ret = reset_control_assert(ar_ahb->cpu_init_rst);
378 ath10k_err(ar, "failed to assert cpu init rst: %d\n", ret);
381 /* Clear halt req and core clock disable req before
382 * deasserting wifi core reset.
384 val = ath10k_ahb_tcsr_read32(ar, haltreq_reg);
385 val &= ~AHB_AXI_BUS_HALT_REQ;
386 ath10k_ahb_tcsr_write32(ar, haltreq_reg, val);
388 val = ath10k_ahb_tcsr_read32(ar, glb_cfg_reg);
389 val &= ~TCSR_WIFIX_GLB_CFG_DISABLE_CORE_CLK;
390 ath10k_ahb_tcsr_write32(ar, glb_cfg_reg, val);
392 ret = reset_control_deassert(ar_ahb->core_cold_rst);
394 ath10k_err(ar, "failed to deassert core cold rst: %d\n", ret);
396 ath10k_dbg(ar, ATH10K_DBG_AHB, "core %d reset done\n", core_id);
399 static irqreturn_t ath10k_ahb_interrupt_handler(int irq, void *arg)
401 struct ath10k *ar = arg;
403 if (!ath10k_pci_irq_pending(ar))
406 ath10k_pci_disable_and_clear_legacy_irq(ar);
407 ath10k_pci_irq_msi_fw_mask(ar);
408 napi_schedule(&ar->napi);
413 static int ath10k_ahb_request_irq_legacy(struct ath10k *ar)
415 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
416 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
419 ret = request_irq(ar_ahb->irq,
420 ath10k_ahb_interrupt_handler,
421 IRQF_SHARED, "ath10k_ahb", ar);
423 ath10k_warn(ar, "failed to request legacy irq %d: %d\n",
427 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_LEGACY;
432 static void ath10k_ahb_release_irq_legacy(struct ath10k *ar)
434 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
436 free_irq(ar_ahb->irq, ar);
439 static void ath10k_ahb_irq_disable(struct ath10k *ar)
441 ath10k_ce_disable_interrupts(ar);
442 ath10k_pci_disable_and_clear_legacy_irq(ar);
445 static int ath10k_ahb_resource_init(struct ath10k *ar)
447 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
448 struct platform_device *pdev;
450 struct resource *res;
456 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
458 ath10k_err(ar, "failed to get memory resource\n");
463 ar_ahb->mem = devm_ioremap_resource(&pdev->dev, res);
464 if (IS_ERR(ar_ahb->mem)) {
465 ath10k_err(ar, "mem ioremap error\n");
466 ret = PTR_ERR(ar_ahb->mem);
470 ar_ahb->mem_len = resource_size(res);
472 ar_ahb->gcc_mem = ioremap_nocache(ATH10K_GCC_REG_BASE,
473 ATH10K_GCC_REG_SIZE);
474 if (!ar_ahb->gcc_mem) {
475 ath10k_err(ar, "gcc mem ioremap error\n");
480 ar_ahb->tcsr_mem = ioremap_nocache(ATH10K_TCSR_REG_BASE,
481 ATH10K_TCSR_REG_SIZE);
482 if (!ar_ahb->tcsr_mem) {
483 ath10k_err(ar, "tcsr mem ioremap error\n");
485 goto err_gcc_mem_unmap;
488 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
490 ath10k_err(ar, "failed to set 32-bit dma mask: %d\n", ret);
491 goto err_tcsr_mem_unmap;
494 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
496 ath10k_err(ar, "failed to set 32-bit consistent dma: %d\n",
498 goto err_tcsr_mem_unmap;
501 ret = ath10k_ahb_clock_init(ar);
503 goto err_tcsr_mem_unmap;
505 ret = ath10k_ahb_rst_ctrl_init(ar);
507 goto err_clock_deinit;
509 ar_ahb->irq = platform_get_irq_byname(pdev, "legacy");
510 if (ar_ahb->irq < 0) {
511 ath10k_err(ar, "failed to get irq number: %d\n", ar_ahb->irq);
513 goto err_clock_deinit;
516 ath10k_dbg(ar, ATH10K_DBG_BOOT, "irq: %d\n", ar_ahb->irq);
518 ath10k_dbg(ar, ATH10K_DBG_BOOT, "mem: 0x%pK mem_len: %lu gcc mem: 0x%pK tcsr_mem: 0x%pK\n",
519 ar_ahb->mem, ar_ahb->mem_len,
520 ar_ahb->gcc_mem, ar_ahb->tcsr_mem);
524 ath10k_ahb_clock_deinit(ar);
527 iounmap(ar_ahb->tcsr_mem);
530 ar_ahb->tcsr_mem = NULL;
531 iounmap(ar_ahb->gcc_mem);
534 ar_ahb->gcc_mem = NULL;
535 devm_iounmap(&pdev->dev, ar_ahb->mem);
542 static void ath10k_ahb_resource_deinit(struct ath10k *ar)
544 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
547 dev = &ar_ahb->pdev->dev;
550 devm_iounmap(dev, ar_ahb->mem);
553 iounmap(ar_ahb->gcc_mem);
555 if (ar_ahb->tcsr_mem)
556 iounmap(ar_ahb->tcsr_mem);
559 ar_ahb->gcc_mem = NULL;
560 ar_ahb->tcsr_mem = NULL;
562 ath10k_ahb_clock_deinit(ar);
563 ath10k_ahb_rst_ctrl_deinit(ar);
566 static int ath10k_ahb_prepare_device(struct ath10k *ar)
571 ret = ath10k_ahb_clock_enable(ar);
573 ath10k_err(ar, "failed to enable clocks\n");
577 /* Clock for the target is supplied from outside of target (ie,
578 * external clock module controlled by the host). Target needs
579 * to know what frequency target cpu is configured which is needed
580 * for target internal use. Read target cpu frequency info from
581 * gcc register and write into target's scratch register where
582 * target expects this information.
584 val = ath10k_ahb_gcc_read32(ar, ATH10K_AHB_GCC_FEPLL_PLL_DIV);
585 ath10k_ahb_write32(ar, ATH10K_AHB_WIFI_SCRATCH_5_REG, val);
587 ret = ath10k_ahb_release_reset(ar);
589 goto err_clk_disable;
591 ath10k_ahb_irq_disable(ar);
593 ath10k_ahb_write32(ar, FW_INDICATOR_ADDRESS, FW_IND_HOST_READY);
595 ret = ath10k_pci_wait_for_target_init(ar);
602 ath10k_ahb_halt_chip(ar);
605 ath10k_ahb_clock_disable(ar);
610 static int ath10k_ahb_chip_reset(struct ath10k *ar)
614 ath10k_ahb_halt_chip(ar);
615 ath10k_ahb_clock_disable(ar);
617 ret = ath10k_ahb_prepare_device(ar);
624 static int ath10k_ahb_wake_target_cpu(struct ath10k *ar)
628 addr = SOC_CORE_BASE_ADDRESS | CORE_CTRL_ADDRESS;
629 val = ath10k_ahb_read32(ar, addr);
630 val |= ATH10K_AHB_CORE_CTRL_CPU_INTR_MASK;
631 ath10k_ahb_write32(ar, addr, val);
636 static int ath10k_ahb_hif_start(struct ath10k *ar)
638 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot ahb hif start\n");
640 ath10k_ce_enable_interrupts(ar);
641 ath10k_pci_enable_legacy_irq(ar);
643 ath10k_pci_rx_post(ar);
648 static void ath10k_ahb_hif_stop(struct ath10k *ar)
650 struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
652 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot ahb hif stop\n");
654 ath10k_ahb_irq_disable(ar);
655 synchronize_irq(ar_ahb->irq);
657 ath10k_pci_flush(ar);
659 napi_synchronize(&ar->napi);
660 napi_disable(&ar->napi);
663 static int ath10k_ahb_hif_power_up(struct ath10k *ar)
667 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot ahb hif power up\n");
669 ret = ath10k_ahb_chip_reset(ar);
671 ath10k_err(ar, "failed to reset chip: %d\n", ret);
675 ret = ath10k_pci_init_pipes(ar);
677 ath10k_err(ar, "failed to initialize CE: %d\n", ret);
681 ret = ath10k_pci_init_config(ar);
683 ath10k_err(ar, "failed to setup init config: %d\n", ret);
687 ret = ath10k_ahb_wake_target_cpu(ar);
689 ath10k_err(ar, "could not wake up target CPU: %d\n", ret);
692 napi_enable(&ar->napi);
697 ath10k_pci_ce_deinit(ar);
702 static const struct ath10k_hif_ops ath10k_ahb_hif_ops = {
703 .tx_sg = ath10k_pci_hif_tx_sg,
704 .diag_read = ath10k_pci_hif_diag_read,
705 .diag_write = ath10k_pci_diag_write_mem,
706 .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg,
707 .start = ath10k_ahb_hif_start,
708 .stop = ath10k_ahb_hif_stop,
709 .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe,
710 .get_default_pipe = ath10k_pci_hif_get_default_pipe,
711 .send_complete_check = ath10k_pci_hif_send_complete_check,
712 .get_free_queue_number = ath10k_pci_hif_get_free_queue_number,
713 .power_up = ath10k_ahb_hif_power_up,
714 .power_down = ath10k_pci_hif_power_down,
715 .read32 = ath10k_ahb_read32,
716 .write32 = ath10k_ahb_write32,
719 static const struct ath10k_bus_ops ath10k_ahb_bus_ops = {
720 .read32 = ath10k_ahb_read32,
721 .write32 = ath10k_ahb_write32,
722 .get_num_banks = ath10k_ahb_get_num_banks,
725 static int ath10k_ahb_probe(struct platform_device *pdev)
728 struct ath10k_ahb *ar_ahb;
729 struct ath10k_pci *ar_pci;
730 const struct of_device_id *of_id;
731 enum ath10k_hw_rev hw_rev;
736 of_id = of_match_device(ath10k_ahb_of_match, &pdev->dev);
738 dev_err(&pdev->dev, "failed to find matching device tree id\n");
742 hw_rev = (enum ath10k_hw_rev)of_id->data;
744 size = sizeof(*ar_pci) + sizeof(*ar_ahb);
745 ar = ath10k_core_create(size, &pdev->dev, ATH10K_BUS_AHB,
746 hw_rev, &ath10k_ahb_hif_ops);
748 dev_err(&pdev->dev, "failed to allocate core\n");
752 ath10k_dbg(ar, ATH10K_DBG_BOOT, "ahb probe\n");
754 ar_pci = ath10k_pci_priv(ar);
755 ar_ahb = ath10k_ahb_priv(ar);
758 platform_set_drvdata(pdev, ar);
760 ret = ath10k_ahb_resource_init(ar);
762 goto err_core_destroy;
765 ar_pci->mem = ar_ahb->mem;
766 ar_pci->mem_len = ar_ahb->mem_len;
768 ar_pci->bus_ops = &ath10k_ahb_bus_ops;
770 ret = ath10k_pci_setup_resource(ar);
772 ath10k_err(ar, "failed to setup resource: %d\n", ret);
773 goto err_resource_deinit;
776 ath10k_pci_init_napi(ar);
778 ret = ath10k_ahb_request_irq_legacy(ar);
782 ret = ath10k_ahb_prepare_device(ar);
786 ath10k_pci_ce_deinit(ar);
788 chip_id = ath10k_ahb_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
789 if (chip_id == 0xffffffff) {
790 ath10k_err(ar, "failed to get chip id\n");
792 goto err_halt_device;
795 ret = ath10k_core_register(ar, chip_id);
797 ath10k_err(ar, "failed to register driver core: %d\n", ret);
798 goto err_halt_device;
804 ath10k_ahb_halt_chip(ar);
805 ath10k_ahb_clock_disable(ar);
808 ath10k_ahb_release_irq_legacy(ar);
811 ath10k_pci_free_pipes(ar);
814 ath10k_ahb_resource_deinit(ar);
817 ath10k_core_destroy(ar);
818 platform_set_drvdata(pdev, NULL);
823 static int ath10k_ahb_remove(struct platform_device *pdev)
825 struct ath10k *ar = platform_get_drvdata(pdev);
826 struct ath10k_ahb *ar_ahb;
831 ar_ahb = ath10k_ahb_priv(ar);
836 ath10k_dbg(ar, ATH10K_DBG_AHB, "ahb remove\n");
838 ath10k_core_unregister(ar);
839 ath10k_ahb_irq_disable(ar);
840 ath10k_ahb_release_irq_legacy(ar);
841 ath10k_pci_release_resource(ar);
842 ath10k_ahb_halt_chip(ar);
843 ath10k_ahb_clock_disable(ar);
844 ath10k_ahb_resource_deinit(ar);
845 ath10k_core_destroy(ar);
847 platform_set_drvdata(pdev, NULL);
852 static struct platform_driver ath10k_ahb_driver = {
854 .name = "ath10k_ahb",
855 .of_match_table = ath10k_ahb_of_match,
857 .probe = ath10k_ahb_probe,
858 .remove = ath10k_ahb_remove,
861 int ath10k_ahb_init(void)
865 ret = platform_driver_register(&ath10k_ahb_driver);
867 printk(KERN_ERR "failed to register ath10k ahb driver: %d\n",
872 void ath10k_ahb_exit(void)
874 platform_driver_unregister(&ath10k_ahb_driver);