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->hw_name = "Marlon B0";
44 wil->hw_version = HW_VER_MARLON_B0;
46 case JTAG_DEV_ID_SPARROW_A0:
47 wil->hw_name = "Sparrow A0";
48 wil->hw_version = HW_VER_SPARROW_A0;
50 case JTAG_DEV_ID_SPARROW_A1:
51 wil->hw_name = "Sparrow A1";
52 wil->hw_version = HW_VER_SPARROW_A1;
54 case JTAG_DEV_ID_SPARROW_B0:
55 wil->hw_name = "Sparrow B0";
56 wil->hw_version = HW_VER_SPARROW_B0;
59 wil_err(wil, "Unknown board hardware 0x%08x\n", rev_id);
60 wil->hw_name = "Unknown";
61 wil->hw_version = HW_VER_UNKNOWN;
64 wil_info(wil, "Board hardware is %s\n", wil->hw_name);
66 if (wil->hw_version >= HW_VER_SPARROW_A0)
67 set_bit(hw_capability_reset_v2, wil->hw_capabilities);
70 void wil_disable_irq(struct wil6210_priv *wil)
72 int irq = wil->pdev->irq;
75 if (wil->n_msi == 3) {
81 void wil_enable_irq(struct wil6210_priv *wil)
83 int irq = wil->pdev->irq;
86 if (wil->n_msi == 3) {
93 static int wil_if_pcie_enable(struct wil6210_priv *wil)
95 struct pci_dev *pdev = wil->pdev;
97 /* on platforms with buggy ACPI, pdev->msi_enabled may be set to
98 * allow pci_enable_device to work. This indicates INTx was not routed
99 * and only MSI should be used
101 int msi_only = pdev->msi_enabled;
103 wil_dbg_misc(wil, "%s()\n", __func__);
105 pdev->msi_enabled = 0;
107 pci_set_master(pdev);
110 * how many MSI interrupts to request?
115 wil_dbg_misc(wil, "Setup %d MSI interrupts\n", use_msi);
118 wil_dbg_misc(wil, "MSI interrupts disabled, use INTx\n");
121 wil_err(wil, "Invalid use_msi=%d, default to 1\n", use_msi);
125 if (use_msi == 3 && pci_enable_msi_range(pdev, 3, 3) < 0) {
126 wil_err(wil, "3 MSI mode failed, try 1 MSI\n");
130 if (use_msi == 1 && pci_enable_msi(pdev)) {
131 wil_err(wil, "pci_enable_msi failed, use INTx\n");
135 wil->n_msi = use_msi;
137 if ((wil->n_msi == 0) && msi_only) {
138 wil_err(wil, "Interrupt pin not routed, unable to use INTx\n");
143 rc = wil6210_init_irq(wil, pdev->irq);
147 /* need reset here to obtain MAC */
148 mutex_lock(&wil->mutex);
150 mutex_unlock(&wil->mutex);
159 wil6210_fini_irq(wil, pdev->irq);
160 /* safe to call if no MSI */
161 pci_disable_msi(pdev);
163 pci_clear_master(pdev);
167 static int wil_if_pcie_disable(struct wil6210_priv *wil)
169 struct pci_dev *pdev = wil->pdev;
171 wil_dbg_misc(wil, "%s()\n", __func__);
173 pci_clear_master(pdev);
174 /* disable and release IRQ */
175 wil6210_fini_irq(wil, pdev->irq);
176 /* safe to call if no MSI */
177 pci_disable_msi(pdev);
178 /* TODO: disable HW */
183 static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
185 struct wil6210_priv *wil;
186 struct device *dev = &pdev->dev;
191 dev_info(&pdev->dev, WIL_NAME
192 " device found [%04x:%04x] (rev %x)\n",
193 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
195 if (pci_resource_len(pdev, 0) != WIL6210_MEM_SIZE) {
196 dev_err(&pdev->dev, "Not " WIL_NAME "? "
197 "BAR0 size is %lu while expecting %lu\n",
198 (ulong)pci_resource_len(pdev, 0), WIL6210_MEM_SIZE);
202 rc = pci_enable_device(pdev);
205 "pci_enable_device failed, retry with MSI only\n");
206 /* Work around for platforms that can't allocate IRQ:
207 * retry with MSI only
209 pdev->msi_enabled = 1;
210 rc = pci_enable_device(pdev);
214 /* rollback to err_disable_pdev */
216 rc = pci_request_region(pdev, 0, WIL_NAME);
218 dev_err(&pdev->dev, "pci_request_region failed\n");
219 goto err_disable_pdev;
221 /* rollback to err_release_reg */
223 csr = pci_ioremap_bar(pdev, 0);
225 dev_err(&pdev->dev, "pci_ioremap_bar failed\n");
227 goto err_release_reg;
229 /* rollback to err_iounmap */
230 dev_info(&pdev->dev, "CSR at %pR -> 0x%p\n", &pdev->resource[0], csr);
232 wil = wil_if_alloc(dev, csr);
234 rc = (int)PTR_ERR(wil);
235 dev_err(dev, "wil_if_alloc failed: %d\n", rc);
238 /* rollback to if_free */
240 pci_set_drvdata(pdev, wil);
242 wil_set_capabilities(wil);
243 wil6210_clear_irq(wil);
245 wil->platform_handle =
246 wil_platform_init(&pdev->dev, &wil->platform_ops);
248 /* FW should raise IRQ when ready */
249 rc = wil_if_pcie_enable(wil);
251 wil_err(wil, "Enable device failed\n");
254 /* rollback to bus_disable */
256 rc = wil_if_add(wil);
258 wil_err(wil, "wil_if_add failed: %d\n", rc);
262 wil6210_debugfs_init(wil);
264 /* check FW is alive */
270 wil_if_pcie_disable(wil);
272 if (wil->platform_ops.uninit)
273 wil->platform_ops.uninit(wil->platform_handle);
276 pci_iounmap(pdev, csr);
278 pci_release_region(pdev, 0);
280 pci_disable_device(pdev);
285 static void wil_pcie_remove(struct pci_dev *pdev)
287 struct wil6210_priv *wil = pci_get_drvdata(pdev);
288 void __iomem *csr = wil->csr;
290 wil_dbg_misc(wil, "%s()\n", __func__);
292 wil6210_debugfs_remove(wil);
294 wil_if_pcie_disable(wil);
295 if (wil->platform_ops.uninit)
296 wil->platform_ops.uninit(wil->platform_handle);
298 pci_iounmap(pdev, csr);
299 pci_release_region(pdev, 0);
300 pci_disable_device(pdev);
303 static const struct pci_device_id wil6210_pcie_ids[] = {
304 { PCI_DEVICE(0x1ae9, 0x0301) },
305 { PCI_DEVICE(0x1ae9, 0x0310) },
306 { PCI_DEVICE(0x1ae9, 0x0302) }, /* same as above, firmware broken */
307 { /* end: all zeroes */ },
309 MODULE_DEVICE_TABLE(pci, wil6210_pcie_ids);
311 static struct pci_driver wil6210_driver = {
312 .probe = wil_pcie_probe,
313 .remove = wil_pcie_remove,
314 .id_table = wil6210_pcie_ids,
318 module_pci_driver(wil6210_driver);
320 MODULE_LICENSE("Dual BSD/GPL");
321 MODULE_AUTHOR("Qualcomm Atheros <wil6210@qca.qualcomm.com>");
322 MODULE_DESCRIPTION("Driver for 60g WiFi WIL6210 card");