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1// SPDX-License-Identifier: GPL-2.0-only
2/*******************************************************************************
3 This contains the functions to handle the pci driver.
4
5 Copyright (C) 2011-2012 Vayavya Labs Pvt Ltd
6
7
8 Author: Rayagond Kokatanur <rayagond@vayavyalabs.com>
9 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
10*******************************************************************************/
11
12#include <linux/clk-provider.h>
13#include <linux/pci.h>
14#include <linux/dmi.h>
15
16#include "stmmac.h"
17
18struct stmmac_pci_info {
19 int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat);
20};
21
22static void common_default_data(struct plat_stmmacenet_data *plat)
23{
24 plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
25 plat->has_gmac = 1;
26 plat->force_sf_dma_mode = 1;
27
28 plat->mdio_bus_data->needs_reset = true;
29
30 /* Set default value for multicast hash bins */
31 plat->multicast_filter_bins = HASH_TABLE_SIZE;
32
33 /* Set default value for unicast filter entries */
34 plat->unicast_filter_entries = 1;
35
36 /* Set the maxmtu to a default of JUMBO_LEN */
37 plat->maxmtu = JUMBO_LEN;
38
39 /* Set default number of RX and TX queues to use */
40 plat->tx_queues_to_use = 1;
41 plat->rx_queues_to_use = 1;
42
43 /* Disable Priority config by default */
44 plat->tx_queues_cfg[0].use_prio = false;
45 plat->rx_queues_cfg[0].use_prio = false;
46
47 /* Disable RX queues routing by default */
48 plat->rx_queues_cfg[0].pkt_route = 0x0;
49}
50
51static int stmmac_default_data(struct pci_dev *pdev,
52 struct plat_stmmacenet_data *plat)
53{
54 /* Set common default data first */
55 common_default_data(plat);
56
57 plat->bus_id = 1;
58 plat->phy_addr = 0;
59 plat->phy_interface = PHY_INTERFACE_MODE_GMII;
60
61 plat->dma_cfg->pbl = 32;
62 plat->dma_cfg->pblx8 = true;
63 /* TODO: AXI */
64
65 return 0;
66}
67
68static const struct stmmac_pci_info stmmac_pci_info = {
69 .setup = stmmac_default_data,
70};
71
72static int snps_gmac5_default_data(struct pci_dev *pdev,
73 struct plat_stmmacenet_data *plat)
74{
75 int i;
76
77 plat->clk_csr = 5;
78 plat->has_gmac4 = 1;
79 plat->force_sf_dma_mode = 1;
80 plat->flags |= STMMAC_FLAG_TSO_EN;
81 plat->pmt = 1;
82
83 /* Set default value for multicast hash bins */
84 plat->multicast_filter_bins = HASH_TABLE_SIZE;
85
86 /* Set default value for unicast filter entries */
87 plat->unicast_filter_entries = 1;
88
89 /* Set the maxmtu to a default of JUMBO_LEN */
90 plat->maxmtu = JUMBO_LEN;
91
92 /* Set default number of RX and TX queues to use */
93 plat->tx_queues_to_use = 4;
94 plat->rx_queues_to_use = 4;
95
96 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR;
97 for (i = 0; i < plat->tx_queues_to_use; i++) {
98 plat->tx_queues_cfg[i].use_prio = false;
99 plat->tx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;
100 plat->tx_queues_cfg[i].weight = 25;
101 if (i > 0)
102 plat->tx_queues_cfg[i].tbs_en = 1;
103 }
104
105 plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP;
106 for (i = 0; i < plat->rx_queues_to_use; i++) {
107 plat->rx_queues_cfg[i].use_prio = false;
108 plat->rx_queues_cfg[i].mode_to_use = MTL_QUEUE_DCB;
109 plat->rx_queues_cfg[i].pkt_route = 0x0;
110 plat->rx_queues_cfg[i].chan = i;
111 }
112
113 plat->bus_id = 1;
114 plat->phy_addr = -1;
115 plat->phy_interface = PHY_INTERFACE_MODE_GMII;
116
117 plat->dma_cfg->pbl = 32;
118 plat->dma_cfg->pblx8 = true;
119
120 /* Axi Configuration */
121 plat->axi = devm_kzalloc(&pdev->dev, sizeof(*plat->axi), GFP_KERNEL);
122 if (!plat->axi)
123 return -ENOMEM;
124
125 plat->axi->axi_wr_osr_lmt = 31;
126 plat->axi->axi_rd_osr_lmt = 31;
127
128 plat->axi->axi_fb = false;
129 plat->axi->axi_blen[0] = 4;
130 plat->axi->axi_blen[1] = 8;
131 plat->axi->axi_blen[2] = 16;
132 plat->axi->axi_blen[3] = 32;
133
134 return 0;
135}
136
137static const struct stmmac_pci_info snps_gmac5_pci_info = {
138 .setup = snps_gmac5_default_data,
139};
140
141/**
142 * stmmac_pci_probe
143 *
144 * @pdev: pci device pointer
145 * @id: pointer to table of device id/id's.
146 *
147 * Description: This probing function gets called for all PCI devices which
148 * match the ID table and are not "owned" by other driver yet. This function
149 * gets passed a "struct pci_dev *" for each device whose entry in the ID table
150 * matches the device. The probe functions returns zero when the driver choose
151 * to take "ownership" of the device or an error code(-ve no) otherwise.
152 */
153static int stmmac_pci_probe(struct pci_dev *pdev,
154 const struct pci_device_id *id)
155{
156 struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data;
157 struct plat_stmmacenet_data *plat;
158 struct stmmac_resources res;
159 int i;
160 int ret;
161
162 plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
163 if (!plat)
164 return -ENOMEM;
165
166 plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
167 sizeof(*plat->mdio_bus_data),
168 GFP_KERNEL);
169 if (!plat->mdio_bus_data)
170 return -ENOMEM;
171
172 plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
173 GFP_KERNEL);
174 if (!plat->dma_cfg)
175 return -ENOMEM;
176
177 plat->safety_feat_cfg = devm_kzalloc(&pdev->dev,
178 sizeof(*plat->safety_feat_cfg),
179 GFP_KERNEL);
180 if (!plat->safety_feat_cfg)
181 return -ENOMEM;
182
183 /* Enable pci device */
184 ret = pcim_enable_device(pdev);
185 if (ret) {
186 dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
187 __func__);
188 return ret;
189 }
190
191 /* Get the base address of device */
192 for (i = 0; i < PCI_STD_NUM_BARS; i++) {
193 if (pci_resource_len(pdev, i) == 0)
194 continue;
195 ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev));
196 if (ret)
197 return ret;
198 break;
199 }
200
201 pci_set_master(pdev);
202
203 ret = info->setup(pdev, plat);
204 if (ret)
205 return ret;
206
207 memset(&res, 0, sizeof(res));
208 res.addr = pcim_iomap_table(pdev)[i];
209 res.wol_irq = pdev->irq;
210 res.irq = pdev->irq;
211
212 plat->safety_feat_cfg->tsoee = 1;
213 plat->safety_feat_cfg->mrxpee = 1;
214 plat->safety_feat_cfg->mestee = 1;
215 plat->safety_feat_cfg->mrxee = 1;
216 plat->safety_feat_cfg->mtxee = 1;
217 plat->safety_feat_cfg->epsi = 1;
218 plat->safety_feat_cfg->edpp = 1;
219 plat->safety_feat_cfg->prtyen = 1;
220 plat->safety_feat_cfg->tmouten = 1;
221
222 return stmmac_dvr_probe(&pdev->dev, plat, &res);
223}
224
225/**
226 * stmmac_pci_remove
227 *
228 * @pdev: platform device pointer
229 * Description: this function calls the main to free the net resources
230 * and releases the PCI resources.
231 */
232static void stmmac_pci_remove(struct pci_dev *pdev)
233{
234 int i;
235
236 stmmac_dvr_remove(&pdev->dev);
237
238 for (i = 0; i < PCI_STD_NUM_BARS; i++) {
239 if (pci_resource_len(pdev, i) == 0)
240 continue;
241 pcim_iounmap_regions(pdev, BIT(i));
242 break;
243 }
244}
245
246static int __maybe_unused stmmac_pci_suspend(struct device *dev)
247{
248 struct pci_dev *pdev = to_pci_dev(dev);
249 int ret;
250
251 ret = stmmac_suspend(dev);
252 if (ret)
253 return ret;
254
255 ret = pci_save_state(pdev);
256 if (ret)
257 return ret;
258
259 pci_disable_device(pdev);
260 pci_wake_from_d3(pdev, true);
261 return 0;
262}
263
264static int __maybe_unused stmmac_pci_resume(struct device *dev)
265{
266 struct pci_dev *pdev = to_pci_dev(dev);
267 int ret;
268
269 pci_restore_state(pdev);
270 pci_set_power_state(pdev, PCI_D0);
271
272 ret = pci_enable_device(pdev);
273 if (ret)
274 return ret;
275
276 pci_set_master(pdev);
277
278 return stmmac_resume(dev);
279}
280
281static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);
282
283/* synthetic ID, no official vendor */
284#define PCI_VENDOR_ID_STMMAC 0x0700
285
286#define PCI_DEVICE_ID_STMMAC_STMMAC 0x1108
287#define PCI_DEVICE_ID_SYNOPSYS_GMAC5_ID 0x7102
288
289static const struct pci_device_id stmmac_id_table[] = {
290 { PCI_DEVICE_DATA(STMMAC, STMMAC, &stmmac_pci_info) },
291 { PCI_DEVICE_DATA(STMICRO, MAC, &stmmac_pci_info) },
292 { PCI_DEVICE_DATA(SYNOPSYS, GMAC5_ID, &snps_gmac5_pci_info) },
293 {}
294};
295
296MODULE_DEVICE_TABLE(pci, stmmac_id_table);
297
298static struct pci_driver stmmac_pci_driver = {
299 .name = STMMAC_RESOURCE_NAME,
300 .id_table = stmmac_id_table,
301 .probe = stmmac_pci_probe,
302 .remove = stmmac_pci_remove,
303 .driver = {
304 .pm = &stmmac_pm_ops,
305 },
306};
307
308module_pci_driver(stmmac_pci_driver);
309
310MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");
311MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");
312MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
313MODULE_LICENSE("GPL");
1/*******************************************************************************
2 This contains the functions to handle the pci driver.
3
4 Copyright (C) 2011-2012 Vayavya Labs Pvt Ltd
5
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.
9
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
13 more details.
14
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.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Author: Rayagond Kokatanur <rayagond@vayavyalabs.com>
23 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
24*******************************************************************************/
25
26#include <linux/pci.h>
27#include <linux/dmi.h>
28
29#include "stmmac.h"
30
31/*
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
35 * with PHY.
36 */
37struct stmmac_pci_dmi_data {
38 const char *name;
39 unsigned int func;
40 int phy_addr;
41};
42
43struct stmmac_pci_info {
44 struct pci_dev *pdev;
45 int (*setup)(struct plat_stmmacenet_data *plat,
46 struct stmmac_pci_info *info);
47 struct stmmac_pci_dmi_data *dmi;
48};
49
50static int stmmac_pci_find_phy_addr(struct stmmac_pci_info *info)
51{
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;
55
56 /*
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.
59 */
60 if (!name)
61 return 1;
62
63 for (dmi = info->dmi; dmi->name && *dmi->name; dmi++) {
64 if (!strcmp(dmi->name, name) && dmi->func == func)
65 return dmi->phy_addr;
66 }
67
68 return -ENODEV;
69}
70
71static void stmmac_default_data(struct plat_stmmacenet_data *plat)
72{
73 plat->bus_id = 1;
74 plat->phy_addr = 0;
75 plat->interface = PHY_INTERFACE_MODE_GMII;
76 plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
77 plat->has_gmac = 1;
78 plat->force_sf_dma_mode = 1;
79
80 plat->mdio_bus_data->phy_reset = NULL;
81 plat->mdio_bus_data->phy_mask = 0;
82
83 plat->dma_cfg->pbl = 32;
84 /* TODO: AXI */
85
86 /* Set default value for multicast hash bins */
87 plat->multicast_filter_bins = HASH_TABLE_SIZE;
88
89 /* Set default value for unicast filter entries */
90 plat->unicast_filter_entries = 1;
91}
92
93static int quark_default_data(struct plat_stmmacenet_data *plat,
94 struct stmmac_pci_info *info)
95{
96 struct pci_dev *pdev = info->pdev;
97 int ret;
98
99 /*
100 * Refuse to load the driver and register net device if MAC controller
101 * does not connect to any PHY interface.
102 */
103 ret = stmmac_pci_find_phy_addr(info);
104 if (ret < 0)
105 return ret;
106
107 plat->bus_id = PCI_DEVID(pdev->bus->number, pdev->devfn);
108 plat->phy_addr = ret;
109 plat->interface = PHY_INTERFACE_MODE_RMII;
110 plat->clk_csr = 2;
111 plat->has_gmac = 1;
112 plat->force_sf_dma_mode = 1;
113
114 plat->mdio_bus_data->phy_reset = NULL;
115 plat->mdio_bus_data->phy_mask = 0;
116
117 plat->dma_cfg->pbl = 16;
118 plat->dma_cfg->fixed_burst = 1;
119 /* AXI (TODO) */
120
121 /* Set default value for multicast hash bins */
122 plat->multicast_filter_bins = HASH_TABLE_SIZE;
123
124 /* Set default value for unicast filter entries */
125 plat->unicast_filter_entries = 1;
126
127 return 0;
128}
129
130static struct stmmac_pci_dmi_data quark_pci_dmi_data[] = {
131 {
132 .name = "Galileo",
133 .func = 6,
134 .phy_addr = 1,
135 },
136 {
137 .name = "GalileoGen2",
138 .func = 6,
139 .phy_addr = 1,
140 },
141 {}
142};
143
144static struct stmmac_pci_info quark_pci_info = {
145 .setup = quark_default_data,
146 .dmi = quark_pci_dmi_data,
147};
148
149/**
150 * stmmac_pci_probe
151 *
152 * @pdev: pci device pointer
153 * @id: pointer to table of device id/id's.
154 *
155 * Description: This probing function gets called for all PCI devices which
156 * match the ID table and are not "owned" by other driver yet. This function
157 * gets passed a "struct pci_dev *" for each device whose entry in the ID table
158 * matches the device. The probe functions returns zero when the driver choose
159 * to take "ownership" of the device or an error code(-ve no) otherwise.
160 */
161static int stmmac_pci_probe(struct pci_dev *pdev,
162 const struct pci_device_id *id)
163{
164 struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data;
165 struct plat_stmmacenet_data *plat;
166 struct stmmac_resources res;
167 int i;
168 int ret;
169
170 plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
171 if (!plat)
172 return -ENOMEM;
173
174 plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
175 sizeof(*plat->mdio_bus_data),
176 GFP_KERNEL);
177 if (!plat->mdio_bus_data)
178 return -ENOMEM;
179
180 plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
181 GFP_KERNEL);
182 if (!plat->dma_cfg)
183 return -ENOMEM;
184
185 /* Enable pci device */
186 ret = pcim_enable_device(pdev);
187 if (ret) {
188 dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
189 __func__);
190 return ret;
191 }
192
193 /* Get the base address of device */
194 for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
195 if (pci_resource_len(pdev, i) == 0)
196 continue;
197 ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev));
198 if (ret)
199 return ret;
200 break;
201 }
202
203 pci_set_master(pdev);
204
205 if (info) {
206 info->pdev = pdev;
207 if (info->setup) {
208 ret = info->setup(plat, info);
209 if (ret)
210 return ret;
211 }
212 } else
213 stmmac_default_data(plat);
214
215 pci_enable_msi(pdev);
216
217 memset(&res, 0, sizeof(res));
218 res.addr = pcim_iomap_table(pdev)[i];
219 res.wol_irq = pdev->irq;
220 res.irq = pdev->irq;
221
222 return stmmac_dvr_probe(&pdev->dev, plat, &res);
223}
224
225/**
226 * stmmac_pci_remove
227 *
228 * @pdev: platform device pointer
229 * Description: this function calls the main to free the net resources
230 * and releases the PCI resources.
231 */
232static void stmmac_pci_remove(struct pci_dev *pdev)
233{
234 struct net_device *ndev = pci_get_drvdata(pdev);
235
236 stmmac_dvr_remove(ndev);
237}
238
239#ifdef CONFIG_PM_SLEEP
240static int stmmac_pci_suspend(struct device *dev)
241{
242 struct pci_dev *pdev = to_pci_dev(dev);
243 struct net_device *ndev = pci_get_drvdata(pdev);
244
245 return stmmac_suspend(ndev);
246}
247
248static int stmmac_pci_resume(struct device *dev)
249{
250 struct pci_dev *pdev = to_pci_dev(dev);
251 struct net_device *ndev = pci_get_drvdata(pdev);
252
253 return stmmac_resume(ndev);
254}
255#endif
256
257static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);
258
259#define STMMAC_VENDOR_ID 0x700
260#define STMMAC_QUARK_ID 0x0937
261#define STMMAC_DEVICE_ID 0x1108
262
263static const struct pci_device_id stmmac_id_table[] = {
264 {PCI_DEVICE(STMMAC_VENDOR_ID, STMMAC_DEVICE_ID)},
265 {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_MAC)},
266 {PCI_VDEVICE(INTEL, STMMAC_QUARK_ID), (kernel_ulong_t)&quark_pci_info},
267 {}
268};
269
270MODULE_DEVICE_TABLE(pci, stmmac_id_table);
271
272static struct pci_driver stmmac_pci_driver = {
273 .name = STMMAC_RESOURCE_NAME,
274 .id_table = stmmac_id_table,
275 .probe = stmmac_pci_probe,
276 .remove = stmmac_pci_remove,
277 .driver = {
278 .pm = &stmmac_pm_ops,
279 },
280};
281
282module_pci_driver(stmmac_pci_driver);
283
284MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");
285MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");
286MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
287MODULE_LICENSE("GPL");