2 * Copyright (C) 2006, 2007 OpenWrt.org
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 #include <linux/types.h>
20 #include <linux/pci.h>
21 #include <linux/kernel.h>
22 #include <linux/init.h>
23 #include <linux/irq.h>
24 #include <asm/ar7/vlynq.h>
26 #define VLYNQ_PCI_SLOTS 2
28 struct vlynq_reg_config {
33 struct vlynq_pci_config {
36 struct vlynq_mapping rx_mapping[4];
42 struct vlynq_reg_config regs[10];
45 struct vlynq_pci_private {
50 struct vlynq_pci_config *config;
53 static struct vlynq_pci_config known_devices[] = {
55 .chip_id = 0x00000009, .name = "TI TNETW1130",
57 { .size = 0x22000, .offset = 0xf0000000 },
58 { .size = 0x40000, .offset = 0xc0000000 },
59 { .size = 0x0, .offset = 0x0 },
60 { .size = 0x0, .offset = 0x0 },
62 .irq = 0, .chip = 0x9066104c,
63 .irq_type = IRQ_TYPE_EDGE_RISING,
64 .class = PCI_CLASS_NETWORK_OTHER,
69 .value = (0xd0000000 - PHYS_OFFSET)
73 .value = (0xd0000000 - PHYS_OFFSET)
75 { .offset = 0x740, .value = 0 },
76 { .offset = 0x744, .value = 0x00010000 },
77 { .offset = 0x764, .value = 0x00010000 },
81 .chip_id = 0x00000029, .name = "TI TNETW1350",
83 { .size = 0x100000, .offset = 0x00300000 },
84 { .size = 0x80000, .offset = 0x00000000 },
85 { .size = 0x0, .offset = 0x0 },
86 { .size = 0x0, .offset = 0x0 },
88 .irq = 0, .chip = 0x9066104c,
89 .irq_type = IRQ_TYPE_EDGE_RISING,
90 .class = PCI_CLASS_NETWORK_OTHER,
95 .value = (0x60000000 - PHYS_OFFSET)
99 .value = (0x60000000 - PHYS_OFFSET)
101 { .offset = 0x740, .value = 0 },
102 { .offset = 0x744, .value = 0x00010000 },
103 { .offset = 0x764, .value = 0x00010000 },
108 static struct vlynq_device *slots[VLYNQ_PCI_SLOTS] = { NULL, };
110 static struct resource vlynq_io_resource = {
113 .name = "pci IO space",
114 .flags = IORESOURCE_IO
117 static struct resource vlynq_mem_resource = {
120 .name = "pci memory space",
121 .flags = IORESOURCE_MEM
124 static inline u32 vlynq_get_mapped(struct vlynq_device *dev, int res)
127 struct vlynq_pci_private *priv = dev->priv;
128 u32 ret = dev->mem_start;
129 if (!priv->config->rx_mapping[res].size) return 0;
130 for (i = 0; i < res; i++)
131 ret += priv->config->rx_mapping[i].size;
136 static inline u32 vlynq_read(u32 val, int size)
147 static int vlynq_config_read(struct pci_bus *bus, unsigned int devfn,
148 int where, int size, u32 *val)
150 struct vlynq_device *dev;
151 struct vlynq_pci_private *priv;
152 int resno, slot = PCI_SLOT(devfn);
154 if ((size == 2) && (where & 1))
155 return PCIBIOS_BAD_REGISTER_NUMBER;
156 else if ((size == 4) && (where & 3))
157 return PCIBIOS_BAD_REGISTER_NUMBER;
159 if (slot >= VLYNQ_PCI_SLOTS)
160 return PCIBIOS_DEVICE_NOT_FOUND;
164 if (!dev || (PCI_FUNC(devfn) > 0))
165 return PCIBIOS_DEVICE_NOT_FOUND;
171 *val = vlynq_read(priv->config->chip, size);
174 *val = priv->config->chip & 0xffff;
176 *val = priv->command;
178 /* *val = PCI_STATUS_CAP_LIST;*/
181 case PCI_CLASS_REVISION:
182 *val = priv->config->class;
184 case PCI_LATENCY_TIMER:
185 *val = priv->latency;
187 case PCI_HEADER_TYPE:
188 *val = PCI_HEADER_TYPE_NORMAL;
190 case PCI_CACHE_LINE_SIZE:
191 *val = priv->cache_line;
193 case PCI_BASE_ADDRESS_0:
194 case PCI_BASE_ADDRESS_1:
195 case PCI_BASE_ADDRESS_2:
196 case PCI_BASE_ADDRESS_3:
197 resno = (where - PCI_BASE_ADDRESS_0) >> 2;
198 if (priv->sz_mask & (1 << resno)) {
199 priv->sz_mask &= ~(1 << resno);
200 *val = priv->config->rx_mapping[resno].size;
202 *val = vlynq_get_mapped(dev, resno);
205 case PCI_BASE_ADDRESS_4:
206 case PCI_BASE_ADDRESS_5:
207 case PCI_SUBSYSTEM_VENDOR_ID:
208 case PCI_SUBSYSTEM_ID:
209 case PCI_ROM_ADDRESS:
210 case PCI_INTERRUPT_LINE:
211 case PCI_CARDBUS_CIS:
212 case PCI_CAPABILITY_LIST:
215 case PCI_INTERRUPT_PIN:
219 printk(KERN_NOTICE "%s: Read of unknown register 0x%x "
220 "(size %d)\n", dev->dev.bus_id, where, size);
221 return PCIBIOS_BAD_REGISTER_NUMBER;
223 return PCIBIOS_SUCCESSFUL;
226 static int vlynq_config_write(struct pci_bus *bus, unsigned int devfn,
227 int where, int size, u32 val)
229 struct vlynq_device *dev;
230 struct vlynq_pci_private *priv;
231 int resno, slot = PCI_SLOT(devfn);
233 if ((size == 2) && (where & 1))
234 return PCIBIOS_BAD_REGISTER_NUMBER;
235 else if ((size == 4) && (where & 3))
236 return PCIBIOS_BAD_REGISTER_NUMBER;
238 if (slot >= VLYNQ_PCI_SLOTS)
239 return PCIBIOS_DEVICE_NOT_FOUND;
243 if (!dev || (PCI_FUNC(devfn) > 0))
244 return PCIBIOS_DEVICE_NOT_FOUND;
252 case PCI_CLASS_REVISION:
253 case PCI_HEADER_TYPE:
254 case PCI_CACHE_LINE_SIZE:
255 case PCI_SUBSYSTEM_VENDOR_ID:
256 case PCI_SUBSYSTEM_ID:
257 case PCI_INTERRUPT_LINE:
258 case PCI_INTERRUPT_PIN:
259 case PCI_CARDBUS_CIS:
260 case PCI_CAPABILITY_LIST:
261 return PCIBIOS_FUNC_NOT_SUPPORTED;
264 case PCI_LATENCY_TIMER:
267 case PCI_BASE_ADDRESS_0:
268 case PCI_BASE_ADDRESS_1:
269 case PCI_BASE_ADDRESS_2:
270 case PCI_BASE_ADDRESS_3:
271 if (val == 0xffffffff) {
272 resno = (where - PCI_BASE_ADDRESS_0) >> 2;
273 priv->sz_mask |= (1 << resno);
276 case PCI_BASE_ADDRESS_4:
277 case PCI_BASE_ADDRESS_5:
278 case PCI_ROM_ADDRESS:
281 printk(KERN_NOTICE "%s: Write to unknown register 0x%x "
282 "(size %d) value=0x%x\n", dev->dev.bus_id, where, size,
284 return PCIBIOS_BAD_REGISTER_NUMBER;
286 return PCIBIOS_SUCCESSFUL;
289 static struct pci_ops vlynq_pci_ops = {
294 static struct pci_controller vlynq_controller = {
295 .pci_ops = &vlynq_pci_ops,
296 .io_resource = &vlynq_io_resource,
297 .mem_resource = &vlynq_mem_resource,
300 static int vlynq_pci_probe(struct vlynq_device *dev)
304 struct vlynq_pci_private *priv;
305 struct vlynq_mapping mapping[4] = { { 0, }, };
306 struct vlynq_pci_config *config = NULL;
308 result = vlynq_set_local_irq(dev, 31);
312 result = vlynq_set_remote_irq(dev, 30);
316 dev->divisor = vlynq_ldiv4;
317 result = vlynq_device_enable(dev);
321 chip_id = vlynq_remote_id(dev);
322 for (i = 0; i < ARRAY_SIZE(known_devices); i++)
323 if (chip_id == known_devices[i].chip_id)
324 config = &known_devices[i];
327 printk(KERN_DEBUG "vlynq-pci: skipping unknown device "
328 "%04x:%04x at %s\n", chip_id >> 16,
329 chip_id & 0xffff, dev->dev.bus_id);
334 printk(KERN_NOTICE "vlynq-pci: attaching device %s at %s\n",
335 config->name, dev->dev.bus_id);
337 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
339 printk(KERN_ERR "%s: failed to allocate private data\n",
346 priv->cache_line = 32;
347 priv->config = config;
349 mapping[0].offset = ARCH_PFN_OFFSET << PAGE_SHIFT;
350 mapping[0].size = 0x02000000;
351 vlynq_set_local_mapping(dev, dev->mem_start, mapping);
352 vlynq_set_remote_mapping(dev, 0, config->rx_mapping);
354 set_irq_type(vlynq_virq_to_irq(dev, config->irq), config->irq_type);
356 addr = (u32)ioremap_nocache(dev->mem_start, 0x10000);
358 printk(KERN_ERR "%s: failed to remap io memory\n",
364 for (i = 0; i < config->num_regs; i++)
365 iowrite32(config->regs[i].value,
366 (u32 *)(addr + config->regs[i].offset));
369 for (i = 0; i < VLYNQ_PCI_SLOTS; i++) {
379 vlynq_device_disable(dev);
384 static int vlynq_pci_remove(struct vlynq_device *dev)
387 struct vlynq_pci_private *priv = dev->priv;
389 for (i = 0; i < VLYNQ_PCI_SLOTS; i++)
393 vlynq_device_disable(dev);
399 static struct vlynq_driver vlynq_pci = {
400 .name = "PCI over VLYNQ emulation",
401 .probe = vlynq_pci_probe,
402 .remove = vlynq_pci_remove,
405 int vlynq_pci_init(void)
408 res = vlynq_register_driver(&vlynq_pci);
412 register_pci_controller(&vlynq_controller);
417 int pcibios_map_irq(struct pci_dev *pdev, u8 slot, u8 pin)
419 struct vlynq_device *dev;
420 struct vlynq_pci_private *priv;
429 return vlynq_virq_to_irq(dev, priv->config->irq);
432 /* Do platform specific device initialization at pci_enable_device() time */
433 int pcibios_plat_dev_init(struct pci_dev *dev)