Commit | Line | Data |
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2be7d22f | 1 | /* |
02525a79 | 2 | * Copyright (c) 2012-2014 Qualcomm Atheros, Inc. |
2be7d22f VK |
3 | * |
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. | |
7 | * | |
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. | |
15 | */ | |
16 | ||
2be7d22f | 17 | #include <linux/module.h> |
2be7d22f VK |
18 | #include <linux/pci.h> |
19 | #include <linux/moduleparam.h> | |
20 | ||
21 | #include "wil6210.h" | |
22 | ||
23 | static int use_msi = 1; | |
24 | module_param(use_msi, int, S_IRUGO); | |
25 | MODULE_PARM_DESC(use_msi, | |
26 | " Use MSI interrupt: " | |
27 | "0 - don't, 1 - (default) - single, or 3"); | |
28 | ||
94b7b64c VK |
29 | static bool debug_fw; /* = false; */ |
30 | module_param(debug_fw, bool, S_IRUGO); | |
31 | MODULE_PARM_DESC(debug_fw, " load driver if FW not ready. For FW debug"); | |
32 | ||
2be7d22f VK |
33 | /* Bus ops */ |
34 | static int wil_if_pcie_enable(struct wil6210_priv *wil) | |
35 | { | |
36 | struct pci_dev *pdev = wil->pdev; | |
37 | int rc; | |
2bdc0700 VK |
38 | /* on platforms with buggy ACPI, pdev->msi_enabled may be set to |
39 | * allow pci_enable_device to work. This indicates INTx was not routed | |
40 | * and only MSI should be used | |
41 | */ | |
42 | int msi_only = pdev->msi_enabled; | |
43 | ||
44 | pdev->msi_enabled = 0; | |
2be7d22f VK |
45 | |
46 | pci_set_master(pdev); | |
47 | ||
48 | /* | |
49 | * how many MSI interrupts to request? | |
50 | */ | |
51 | switch (use_msi) { | |
52 | case 3: | |
53 | case 1: | |
b4b39061 AG |
54 | wil_dbg_misc(wil, "Setup %d MSI interrupts\n", use_msi); |
55 | break; | |
2be7d22f | 56 | case 0: |
b4b39061 | 57 | wil_dbg_misc(wil, "MSI interrupts disabled, use INTx\n"); |
2be7d22f VK |
58 | break; |
59 | default: | |
b4b39061 | 60 | wil_err(wil, "Invalid use_msi=%d, default to 1\n", use_msi); |
2be7d22f VK |
61 | use_msi = 1; |
62 | } | |
b4b39061 AG |
63 | |
64 | if (use_msi == 3 && pci_enable_msi_range(pdev, 3, 3) < 0) { | |
65 | wil_err(wil, "3 MSI mode failed, try 1 MSI\n"); | |
66 | use_msi = 1; | |
67 | } | |
68 | ||
69 | if (use_msi == 1 && pci_enable_msi(pdev)) { | |
70 | wil_err(wil, "pci_enable_msi failed, use INTx\n"); | |
71 | use_msi = 0; | |
2be7d22f VK |
72 | } |
73 | ||
b4b39061 AG |
74 | wil->n_msi = use_msi; |
75 | ||
2bdc0700 VK |
76 | if ((wil->n_msi == 0) && msi_only) { |
77 | wil_err(wil, "Interrupt pin not routed, unable to use INTx\n"); | |
78 | rc = -ENODEV; | |
79 | goto stop_master; | |
80 | } | |
81 | ||
2be7d22f VK |
82 | rc = wil6210_init_irq(wil, pdev->irq); |
83 | if (rc) | |
84 | goto stop_master; | |
85 | ||
86 | /* need reset here to obtain MAC */ | |
097638a0 | 87 | mutex_lock(&wil->mutex); |
2be7d22f | 88 | rc = wil_reset(wil); |
097638a0 | 89 | mutex_unlock(&wil->mutex); |
94b7b64c VK |
90 | if (debug_fw) |
91 | rc = 0; | |
2be7d22f VK |
92 | if (rc) |
93 | goto release_irq; | |
94 | ||
95 | return 0; | |
96 | ||
97 | release_irq: | |
98 | wil6210_fini_irq(wil, pdev->irq); | |
99 | /* safe to call if no MSI */ | |
100 | pci_disable_msi(pdev); | |
101 | stop_master: | |
102 | pci_clear_master(pdev); | |
103 | return rc; | |
104 | } | |
105 | ||
106 | static int wil_if_pcie_disable(struct wil6210_priv *wil) | |
107 | { | |
108 | struct pci_dev *pdev = wil->pdev; | |
109 | ||
110 | pci_clear_master(pdev); | |
111 | /* disable and release IRQ */ | |
112 | wil6210_fini_irq(wil, pdev->irq); | |
113 | /* safe to call if no MSI */ | |
114 | pci_disable_msi(pdev); | |
115 | /* TODO: disable HW */ | |
116 | ||
117 | return 0; | |
118 | } | |
119 | ||
120 | static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
121 | { | |
122 | struct wil6210_priv *wil; | |
123 | struct device *dev = &pdev->dev; | |
124 | void __iomem *csr; | |
6508281b | 125 | struct wil_board *board = (struct wil_board *)id->driver_data; |
2be7d22f VK |
126 | int rc; |
127 | ||
128 | /* check HW */ | |
6508281b VK |
129 | dev_info(&pdev->dev, WIL_NAME |
130 | " \"%s\" device found [%04x:%04x] (rev %x)\n", board->name, | |
2be7d22f VK |
131 | (int)pdev->vendor, (int)pdev->device, (int)pdev->revision); |
132 | ||
133 | if (pci_resource_len(pdev, 0) != WIL6210_MEM_SIZE) { | |
134 | dev_err(&pdev->dev, "Not " WIL_NAME "? " | |
135 | "BAR0 size is %lu while expecting %lu\n", | |
136 | (ulong)pci_resource_len(pdev, 0), WIL6210_MEM_SIZE); | |
137 | return -ENODEV; | |
138 | } | |
139 | ||
140 | rc = pci_enable_device(pdev); | |
141 | if (rc) { | |
2bdc0700 VK |
142 | dev_err(&pdev->dev, |
143 | "pci_enable_device failed, retry with MSI only\n"); | |
144 | /* Work around for platforms that can't allocate IRQ: | |
145 | * retry with MSI only | |
146 | */ | |
147 | pdev->msi_enabled = 1; | |
148 | rc = pci_enable_device(pdev); | |
2be7d22f | 149 | } |
2bdc0700 VK |
150 | if (rc) |
151 | return -ENODEV; | |
2be7d22f VK |
152 | /* rollback to err_disable_pdev */ |
153 | ||
154 | rc = pci_request_region(pdev, 0, WIL_NAME); | |
155 | if (rc) { | |
156 | dev_err(&pdev->dev, "pci_request_region failed\n"); | |
157 | goto err_disable_pdev; | |
158 | } | |
159 | /* rollback to err_release_reg */ | |
160 | ||
161 | csr = pci_ioremap_bar(pdev, 0); | |
162 | if (!csr) { | |
163 | dev_err(&pdev->dev, "pci_ioremap_bar failed\n"); | |
164 | rc = -ENODEV; | |
165 | goto err_release_reg; | |
166 | } | |
167 | /* rollback to err_iounmap */ | |
39c52ee8 | 168 | dev_info(&pdev->dev, "CSR at %pR -> 0x%p\n", &pdev->resource[0], csr); |
2be7d22f VK |
169 | |
170 | wil = wil_if_alloc(dev, csr); | |
171 | if (IS_ERR(wil)) { | |
172 | rc = (int)PTR_ERR(wil); | |
173 | dev_err(dev, "wil_if_alloc failed: %d\n", rc); | |
174 | goto err_iounmap; | |
175 | } | |
176 | /* rollback to if_free */ | |
177 | ||
178 | pci_set_drvdata(pdev, wil); | |
179 | wil->pdev = pdev; | |
6508281b | 180 | wil->board = board; |
2be7d22f | 181 | |
f4b5a803 | 182 | wil6210_clear_irq(wil); |
2be7d22f VK |
183 | /* FW should raise IRQ when ready */ |
184 | rc = wil_if_pcie_enable(wil); | |
185 | if (rc) { | |
186 | wil_err(wil, "Enable device failed\n"); | |
187 | goto if_free; | |
188 | } | |
189 | /* rollback to bus_disable */ | |
190 | ||
191 | rc = wil_if_add(wil); | |
192 | if (rc) { | |
193 | wil_err(wil, "wil_if_add failed: %d\n", rc); | |
194 | goto bus_disable; | |
195 | } | |
196 | ||
197 | wil6210_debugfs_init(wil); | |
198 | ||
199 | /* check FW is alive */ | |
200 | wmi_echo(wil); | |
201 | ||
202 | return 0; | |
203 | ||
204 | bus_disable: | |
205 | wil_if_pcie_disable(wil); | |
206 | if_free: | |
207 | wil_if_free(wil); | |
208 | err_iounmap: | |
209 | pci_iounmap(pdev, csr); | |
210 | err_release_reg: | |
211 | pci_release_region(pdev, 0); | |
212 | err_disable_pdev: | |
213 | pci_disable_device(pdev); | |
214 | ||
215 | return rc; | |
216 | } | |
217 | ||
218 | static void wil_pcie_remove(struct pci_dev *pdev) | |
219 | { | |
220 | struct wil6210_priv *wil = pci_get_drvdata(pdev); | |
560ce308 | 221 | void __iomem *csr = wil->csr; |
2be7d22f VK |
222 | |
223 | wil6210_debugfs_remove(wil); | |
224 | wil_if_pcie_disable(wil); | |
225 | wil_if_remove(wil); | |
226 | wil_if_free(wil); | |
560ce308 | 227 | pci_iounmap(pdev, csr); |
2be7d22f VK |
228 | pci_release_region(pdev, 0); |
229 | pci_disable_device(pdev); | |
2be7d22f VK |
230 | } |
231 | ||
6508281b VK |
232 | static const struct wil_board wil_board_marlon = { |
233 | .board = WIL_BOARD_MARLON, | |
234 | .name = "marlon", | |
235 | }; | |
236 | ||
237 | static const struct wil_board wil_board_sparrow = { | |
238 | .board = WIL_BOARD_SPARROW, | |
239 | .name = "sparrow", | |
240 | }; | |
241 | ||
242 | static const struct pci_device_id wil6210_pcie_ids[] = { | |
243 | { PCI_DEVICE(0x1ae9, 0x0301), | |
244 | .driver_data = (kernel_ulong_t)&wil_board_marlon }, | |
245 | { PCI_DEVICE(0x1ae9, 0x0310), | |
246 | .driver_data = (kernel_ulong_t)&wil_board_sparrow }, | |
6afd6005 VK |
247 | { PCI_DEVICE(0x1ae9, 0x0302), /* same as above, firmware broken */ |
248 | .driver_data = (kernel_ulong_t)&wil_board_sparrow }, | |
2be7d22f VK |
249 | { /* end: all zeroes */ }, |
250 | }; | |
251 | MODULE_DEVICE_TABLE(pci, wil6210_pcie_ids); | |
252 | ||
253 | static struct pci_driver wil6210_driver = { | |
254 | .probe = wil_pcie_probe, | |
255 | .remove = wil_pcie_remove, | |
256 | .id_table = wil6210_pcie_ids, | |
257 | .name = WIL_NAME, | |
258 | }; | |
259 | ||
260 | module_pci_driver(wil6210_driver); | |
261 | ||
262 | MODULE_LICENSE("Dual BSD/GPL"); | |
263 | MODULE_AUTHOR("Qualcomm Atheros <wil6210@qca.qualcomm.com>"); | |
264 | MODULE_DESCRIPTION("Driver for 60g WiFi WIL6210 card"); |