2 * Copyright (c) 2012 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/debugfs.h>
19 #include <linux/pci.h>
20 #include <linux/moduleparam.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");
31 static int wil_if_pcie_enable(struct wil6210_priv
*wil
)
33 struct pci_dev
*pdev
= wil
->pdev
;
39 * how many MSI interrupts to request?
44 wil_dbg_misc(wil
, "Setup %d MSI interrupts\n", use_msi
);
47 wil_dbg_misc(wil
, "MSI interrupts disabled, use INTx\n");
50 wil_err(wil
, "Invalid use_msi=%d, default to 1\n", use_msi
);
54 if (use_msi
== 3 && pci_enable_msi_range(pdev
, 3, 3) < 0) {
55 wil_err(wil
, "3 MSI mode failed, try 1 MSI\n");
59 if (use_msi
== 1 && pci_enable_msi(pdev
)) {
60 wil_err(wil
, "pci_enable_msi failed, use INTx\n");
66 rc
= wil6210_init_irq(wil
, pdev
->irq
);
70 /* need reset here to obtain MAC */
71 mutex_lock(&wil
->mutex
);
73 mutex_unlock(&wil
->mutex
);
77 wil_info(wil
, "HW version: 0x%08x\n", wil
->hw_version
);
82 wil6210_fini_irq(wil
, pdev
->irq
);
83 /* safe to call if no MSI */
84 pci_disable_msi(pdev
);
86 pci_clear_master(pdev
);
90 static int wil_if_pcie_disable(struct wil6210_priv
*wil
)
92 struct pci_dev
*pdev
= wil
->pdev
;
94 pci_clear_master(pdev
);
95 /* disable and release IRQ */
96 wil6210_fini_irq(wil
, pdev
->irq
);
97 /* safe to call if no MSI */
98 pci_disable_msi(pdev
);
99 /* TODO: disable HW */
104 static int wil_pcie_probe(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
106 struct wil6210_priv
*wil
;
107 struct device
*dev
= &pdev
->dev
;
112 dev_info(&pdev
->dev
, WIL_NAME
" device found [%04x:%04x] (rev %x)\n",
113 (int)pdev
->vendor
, (int)pdev
->device
, (int)pdev
->revision
);
115 if (pci_resource_len(pdev
, 0) != WIL6210_MEM_SIZE
) {
116 dev_err(&pdev
->dev
, "Not " WIL_NAME
"? "
117 "BAR0 size is %lu while expecting %lu\n",
118 (ulong
)pci_resource_len(pdev
, 0), WIL6210_MEM_SIZE
);
122 rc
= pci_enable_device(pdev
);
124 dev_err(&pdev
->dev
, "pci_enable_device failed\n");
127 /* rollback to err_disable_pdev */
129 rc
= pci_request_region(pdev
, 0, WIL_NAME
);
131 dev_err(&pdev
->dev
, "pci_request_region failed\n");
132 goto err_disable_pdev
;
134 /* rollback to err_release_reg */
136 csr
= pci_ioremap_bar(pdev
, 0);
138 dev_err(&pdev
->dev
, "pci_ioremap_bar failed\n");
140 goto err_release_reg
;
142 /* rollback to err_iounmap */
143 dev_info(&pdev
->dev
, "CSR at %pR -> %p\n", &pdev
->resource
[0], csr
);
145 wil
= wil_if_alloc(dev
, csr
);
147 rc
= (int)PTR_ERR(wil
);
148 dev_err(dev
, "wil_if_alloc failed: %d\n", rc
);
151 /* rollback to if_free */
153 pci_set_drvdata(pdev
, wil
);
156 wil6210_clear_irq(wil
);
157 /* FW should raise IRQ when ready */
158 rc
= wil_if_pcie_enable(wil
);
160 wil_err(wil
, "Enable device failed\n");
163 /* rollback to bus_disable */
165 rc
= wil_if_add(wil
);
167 wil_err(wil
, "wil_if_add failed: %d\n", rc
);
171 wil6210_debugfs_init(wil
);
173 /* check FW is alive */
179 wil_if_pcie_disable(wil
);
183 pci_iounmap(pdev
, csr
);
185 pci_release_region(pdev
, 0);
187 pci_disable_device(pdev
);
192 static void wil_pcie_remove(struct pci_dev
*pdev
)
194 struct wil6210_priv
*wil
= pci_get_drvdata(pdev
);
196 wil6210_debugfs_remove(wil
);
197 wil_if_pcie_disable(wil
);
200 pci_iounmap(pdev
, wil
->csr
);
201 pci_release_region(pdev
, 0);
202 pci_disable_device(pdev
);
205 static DEFINE_PCI_DEVICE_TABLE(wil6210_pcie_ids
) = {
206 { PCI_DEVICE(0x1ae9, 0x0301) },
207 { /* end: all zeroes */ },
209 MODULE_DEVICE_TABLE(pci
, wil6210_pcie_ids
);
211 static struct pci_driver wil6210_driver
= {
212 .probe
= wil_pcie_probe
,
213 .remove
= wil_pcie_remove
,
214 .id_table
= wil6210_pcie_ids
,
218 module_pci_driver(wil6210_driver
);
220 MODULE_LICENSE("Dual BSD/GPL");
221 MODULE_AUTHOR("Qualcomm Atheros <wil6210@qca.qualcomm.com>");
222 MODULE_DESCRIPTION("Driver for 60g WiFi WIL6210 card");