1 /*******************************************************************************
2 This contains the functions to handle the pci driver.
4 Copyright (C) 2011-2012 Vayavya Labs Pvt Ltd
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
22 Author: Rayagond Kokatanur <rayagond@vayavyalabs.com>
23 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
24 *******************************************************************************/
26 #include <linux/pci.h>
27 #include <linux/dmi.h>
32 * This struct is used to associate PCI Function of MAC controller on a board,
33 * discovered via DMI, with the address of PHY connected to the MAC. The
34 * negative value of the address means that MAC controller is not connected
37 struct stmmac_pci_dmi_data {
43 struct stmmac_pci_info {
45 int (*setup)(struct plat_stmmacenet_data *plat,
46 struct stmmac_pci_info *info);
47 struct stmmac_pci_dmi_data *dmi;
50 static int stmmac_pci_find_phy_addr(struct stmmac_pci_info *info)
52 const char *name = dmi_get_system_info(DMI_BOARD_NAME);
53 unsigned int func = PCI_FUNC(info->pdev->devfn);
54 struct stmmac_pci_dmi_data *dmi;
57 * Galileo boards with old firmware don't support DMI. We always return
58 * 1 here, so at least first found MAC controller would be probed.
63 for (dmi = info->dmi; dmi->name && *dmi->name; dmi++) {
64 if (!strcmp(dmi->name, name) && dmi->func == func)
71 static void stmmac_default_data(struct plat_stmmacenet_data *plat)
75 plat->interface = PHY_INTERFACE_MODE_GMII;
76 plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
78 plat->force_sf_dma_mode = 1;
80 plat->mdio_bus_data->phy_reset = NULL;
81 plat->mdio_bus_data->phy_mask = 0;
83 plat->dma_cfg->pbl = 32;
84 plat->dma_cfg->pblx8 = true;
87 /* Set default value for multicast hash bins */
88 plat->multicast_filter_bins = HASH_TABLE_SIZE;
90 /* Set default value for unicast filter entries */
91 plat->unicast_filter_entries = 1;
93 /* Set the maxmtu to a default of JUMBO_LEN */
94 plat->maxmtu = JUMBO_LEN;
97 static int quark_default_data(struct plat_stmmacenet_data *plat,
98 struct stmmac_pci_info *info)
100 struct pci_dev *pdev = info->pdev;
104 * Refuse to load the driver and register net device if MAC controller
105 * does not connect to any PHY interface.
107 ret = stmmac_pci_find_phy_addr(info);
111 plat->bus_id = PCI_DEVID(pdev->bus->number, pdev->devfn);
112 plat->phy_addr = ret;
113 plat->interface = PHY_INTERFACE_MODE_RMII;
116 plat->force_sf_dma_mode = 1;
118 plat->mdio_bus_data->phy_reset = NULL;
119 plat->mdio_bus_data->phy_mask = 0;
121 plat->dma_cfg->pbl = 16;
122 plat->dma_cfg->pblx8 = true;
123 plat->dma_cfg->fixed_burst = 1;
126 /* Set default value for multicast hash bins */
127 plat->multicast_filter_bins = HASH_TABLE_SIZE;
129 /* Set default value for unicast filter entries */
130 plat->unicast_filter_entries = 1;
132 /* Set the maxmtu to a default of JUMBO_LEN */
133 plat->maxmtu = JUMBO_LEN;
138 static struct stmmac_pci_dmi_data quark_pci_dmi_data[] = {
145 .name = "GalileoGen2",
152 static struct stmmac_pci_info quark_pci_info = {
153 .setup = quark_default_data,
154 .dmi = quark_pci_dmi_data,
160 * @pdev: pci device pointer
161 * @id: pointer to table of device id/id's.
163 * Description: This probing function gets called for all PCI devices which
164 * match the ID table and are not "owned" by other driver yet. This function
165 * gets passed a "struct pci_dev *" for each device whose entry in the ID table
166 * matches the device. The probe functions returns zero when the driver choose
167 * to take "ownership" of the device or an error code(-ve no) otherwise.
169 static int stmmac_pci_probe(struct pci_dev *pdev,
170 const struct pci_device_id *id)
172 struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data;
173 struct plat_stmmacenet_data *plat;
174 struct stmmac_resources res;
178 plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
182 plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
183 sizeof(*plat->mdio_bus_data),
185 if (!plat->mdio_bus_data)
188 plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
193 /* Enable pci device */
194 ret = pcim_enable_device(pdev);
196 dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
201 /* Get the base address of device */
202 for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
203 if (pci_resource_len(pdev, i) == 0)
205 ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev));
211 pci_set_master(pdev);
216 ret = info->setup(plat, info);
221 stmmac_default_data(plat);
223 pci_enable_msi(pdev);
225 memset(&res, 0, sizeof(res));
226 res.addr = pcim_iomap_table(pdev)[i];
227 res.wol_irq = pdev->irq;
230 return stmmac_dvr_probe(&pdev->dev, plat, &res);
236 * @pdev: platform device pointer
237 * Description: this function calls the main to free the net resources
238 * and releases the PCI resources.
240 static void stmmac_pci_remove(struct pci_dev *pdev)
242 stmmac_dvr_remove(&pdev->dev);
245 static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_suspend, stmmac_resume);
247 #define STMMAC_VENDOR_ID 0x700
248 #define STMMAC_QUARK_ID 0x0937
249 #define STMMAC_DEVICE_ID 0x1108
251 static const struct pci_device_id stmmac_id_table[] = {
252 {PCI_DEVICE(STMMAC_VENDOR_ID, STMMAC_DEVICE_ID)},
253 {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_MAC)},
254 {PCI_VDEVICE(INTEL, STMMAC_QUARK_ID), (kernel_ulong_t)&quark_pci_info},
258 MODULE_DEVICE_TABLE(pci, stmmac_id_table);
260 static struct pci_driver stmmac_pci_driver = {
261 .name = STMMAC_RESOURCE_NAME,
262 .id_table = stmmac_id_table,
263 .probe = stmmac_pci_probe,
264 .remove = stmmac_pci_remove,
266 .pm = &stmmac_pm_ops,
270 module_pci_driver(stmmac_pci_driver);
272 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");
273 MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");
274 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
275 MODULE_LICENSE("GPL");