2 * Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/module.h>
18 #include <linux/pci.h>
19 #include <linux/moduleparam.h>
20 #include <linux/interrupt.h>
24 static int use_msi = 1;
25 module_param(use_msi, int, S_IRUGO);
26 MODULE_PARM_DESC(use_msi,
27 " Use MSI interrupt: "
28 "0 - don't, 1 - (default) - single, or 3");
30 static bool debug_fw; /* = false; */
31 module_param(debug_fw, bool, S_IRUGO);
32 MODULE_PARM_DESC(debug_fw, " load driver if FW not ready. For FW debug");
35 void wil_set_capabilities(struct wil6210_priv *wil)
37 u32 rev_id = ioread32(wil->csr + HOSTADDR(RGF_USER_JTAG_DEV_ID));
39 bitmap_zero(wil->hw_capabilities, hw_capability_last);
42 case JTAG_DEV_ID_MARLON_B0:
43 wil_info(wil, "Board hardware is Marlon B0\n");
44 wil->hw_version = HW_VER_MARLON_B0;
46 case JTAG_DEV_ID_SPARROW_A0:
47 wil_info(wil, "Board hardware is Sparrow A0\n");
48 wil->hw_version = HW_VER_SPARROW_A0;
50 case JTAG_DEV_ID_SPARROW_A1:
51 wil_info(wil, "Board hardware is Sparrow A1\n");
52 wil->hw_version = HW_VER_SPARROW_A1;
54 case JTAG_DEV_ID_SPARROW_B0:
55 wil_info(wil, "Board hardware is Sparrow B0\n");
56 wil->hw_version = HW_VER_SPARROW_B0;
59 wil_err(wil, "Unknown board hardware 0x%08x\n", rev_id);
60 wil->hw_version = HW_VER_UNKNOWN;
64 void wil_disable_irq(struct wil6210_priv *wil)
66 int irq = wil->pdev->irq;
69 if (wil->n_msi == 3) {
75 void wil_enable_irq(struct wil6210_priv *wil)
77 int irq = wil->pdev->irq;
80 if (wil->n_msi == 3) {
87 static int wil_if_pcie_enable(struct wil6210_priv *wil)
89 struct pci_dev *pdev = wil->pdev;
91 /* on platforms with buggy ACPI, pdev->msi_enabled may be set to
92 * allow pci_enable_device to work. This indicates INTx was not routed
93 * and only MSI should be used
95 int msi_only = pdev->msi_enabled;
97 wil_dbg_misc(wil, "%s()\n", __func__);
99 pdev->msi_enabled = 0;
101 pci_set_master(pdev);
104 * how many MSI interrupts to request?
109 wil_dbg_misc(wil, "Setup %d MSI interrupts\n", use_msi);
112 wil_dbg_misc(wil, "MSI interrupts disabled, use INTx\n");
115 wil_err(wil, "Invalid use_msi=%d, default to 1\n", use_msi);
119 if (use_msi == 3 && pci_enable_msi_range(pdev, 3, 3) < 0) {
120 wil_err(wil, "3 MSI mode failed, try 1 MSI\n");
124 if (use_msi == 1 && pci_enable_msi(pdev)) {
125 wil_err(wil, "pci_enable_msi failed, use INTx\n");
129 wil->n_msi = use_msi;
131 if ((wil->n_msi == 0) && msi_only) {
132 wil_err(wil, "Interrupt pin not routed, unable to use INTx\n");
137 rc = wil6210_init_irq(wil, pdev->irq);
141 /* need reset here to obtain MAC */
142 mutex_lock(&wil->mutex);
144 mutex_unlock(&wil->mutex);
153 wil6210_fini_irq(wil, pdev->irq);
154 /* safe to call if no MSI */
155 pci_disable_msi(pdev);
157 pci_clear_master(pdev);
161 static int wil_if_pcie_disable(struct wil6210_priv *wil)
163 struct pci_dev *pdev = wil->pdev;
165 wil_dbg_misc(wil, "%s()\n", __func__);
167 pci_clear_master(pdev);
168 /* disable and release IRQ */
169 wil6210_fini_irq(wil, pdev->irq);
170 /* safe to call if no MSI */
171 pci_disable_msi(pdev);
172 /* TODO: disable HW */
177 static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
179 struct wil6210_priv *wil;
180 struct device *dev = &pdev->dev;
182 struct wil_board *board = (struct wil_board *)id->driver_data;
186 dev_info(&pdev->dev, WIL_NAME
187 " \"%s\" device found [%04x:%04x] (rev %x)\n", board->name,
188 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
190 if (pci_resource_len(pdev, 0) != WIL6210_MEM_SIZE) {
191 dev_err(&pdev->dev, "Not " WIL_NAME "? "
192 "BAR0 size is %lu while expecting %lu\n",
193 (ulong)pci_resource_len(pdev, 0), WIL6210_MEM_SIZE);
197 rc = pci_enable_device(pdev);
200 "pci_enable_device failed, retry with MSI only\n");
201 /* Work around for platforms that can't allocate IRQ:
202 * retry with MSI only
204 pdev->msi_enabled = 1;
205 rc = pci_enable_device(pdev);
209 /* rollback to err_disable_pdev */
211 rc = pci_request_region(pdev, 0, WIL_NAME);
213 dev_err(&pdev->dev, "pci_request_region failed\n");
214 goto err_disable_pdev;
216 /* rollback to err_release_reg */
218 csr = pci_ioremap_bar(pdev, 0);
220 dev_err(&pdev->dev, "pci_ioremap_bar failed\n");
222 goto err_release_reg;
224 /* rollback to err_iounmap */
225 dev_info(&pdev->dev, "CSR at %pR -> 0x%p\n", &pdev->resource[0], csr);
227 wil = wil_if_alloc(dev, csr);
229 rc = (int)PTR_ERR(wil);
230 dev_err(dev, "wil_if_alloc failed: %d\n", rc);
233 /* rollback to if_free */
235 pci_set_drvdata(pdev, wil);
238 wil_set_capabilities(wil);
239 wil6210_clear_irq(wil);
241 wil->platform_handle =
242 wil_platform_init(&pdev->dev, &wil->platform_ops);
244 /* FW should raise IRQ when ready */
245 rc = wil_if_pcie_enable(wil);
247 wil_err(wil, "Enable device failed\n");
250 /* rollback to bus_disable */
252 rc = wil_if_add(wil);
254 wil_err(wil, "wil_if_add failed: %d\n", rc);
258 wil6210_debugfs_init(wil);
260 /* check FW is alive */
266 wil_if_pcie_disable(wil);
268 if (wil->platform_ops.uninit)
269 wil->platform_ops.uninit(wil->platform_handle);
272 pci_iounmap(pdev, csr);
274 pci_release_region(pdev, 0);
276 pci_disable_device(pdev);
281 static void wil_pcie_remove(struct pci_dev *pdev)
283 struct wil6210_priv *wil = pci_get_drvdata(pdev);
284 void __iomem *csr = wil->csr;
286 wil_dbg_misc(wil, "%s()\n", __func__);
288 wil6210_debugfs_remove(wil);
290 wil_if_pcie_disable(wil);
291 if (wil->platform_ops.uninit)
292 wil->platform_ops.uninit(wil->platform_handle);
294 pci_iounmap(pdev, csr);
295 pci_release_region(pdev, 0);
296 pci_disable_device(pdev);
299 static const struct wil_board wil_board_marlon = {
300 .board = WIL_BOARD_MARLON,
304 static const struct wil_board wil_board_sparrow = {
305 .board = WIL_BOARD_SPARROW,
309 static const struct pci_device_id wil6210_pcie_ids[] = {
310 { PCI_DEVICE(0x1ae9, 0x0301),
311 .driver_data = (kernel_ulong_t)&wil_board_marlon },
312 { PCI_DEVICE(0x1ae9, 0x0310),
313 .driver_data = (kernel_ulong_t)&wil_board_sparrow },
314 { PCI_DEVICE(0x1ae9, 0x0302), /* same as above, firmware broken */
315 .driver_data = (kernel_ulong_t)&wil_board_sparrow },
316 { /* end: all zeroes */ },
318 MODULE_DEVICE_TABLE(pci, wil6210_pcie_ids);
320 static struct pci_driver wil6210_driver = {
321 .probe = wil_pcie_probe,
322 .remove = wil_pcie_remove,
323 .id_table = wil6210_pcie_ids,
327 module_pci_driver(wil6210_driver);
329 MODULE_LICENSE("Dual BSD/GPL");
330 MODULE_AUTHOR("Qualcomm Atheros <wil6210@qca.qualcomm.com>");
331 MODULE_DESCRIPTION("Driver for 60g WiFi WIL6210 card");