1 /* 2 * ULI M1575 setup code - specific to Freescale boards 3 * 4 * Copyright 2007 Freescale Semiconductor Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; either version 2 of the License, or (at your 9 * option) any later version. 10 */ 11 12 #include <linux/stddef.h> 13 #include <linux/kernel.h> 14 #include <linux/pci.h> 15 #include <linux/interrupt.h> 16 #include <linux/mc146818rtc.h> 17 18 #include <asm/system.h> 19 #include <asm/pci-bridge.h> 20 21 #define ULI_PIRQA 0x08 22 #define ULI_PIRQB 0x09 23 #define ULI_PIRQC 0x0a 24 #define ULI_PIRQD 0x0b 25 #define ULI_PIRQE 0x0c 26 #define ULI_PIRQF 0x0d 27 #define ULI_PIRQG 0x0e 28 29 #define ULI_8259_NONE 0x00 30 #define ULI_8259_IRQ1 0x08 31 #define ULI_8259_IRQ3 0x02 32 #define ULI_8259_IRQ4 0x04 33 #define ULI_8259_IRQ5 0x05 34 #define ULI_8259_IRQ6 0x07 35 #define ULI_8259_IRQ7 0x06 36 #define ULI_8259_IRQ9 0x01 37 #define ULI_8259_IRQ10 0x03 38 #define ULI_8259_IRQ11 0x09 39 #define ULI_8259_IRQ12 0x0b 40 #define ULI_8259_IRQ14 0x0d 41 #define ULI_8259_IRQ15 0x0f 42 43 u8 uli_pirq_to_irq[8] = { 44 ULI_8259_IRQ9, /* PIRQA */ 45 ULI_8259_IRQ10, /* PIRQB */ 46 ULI_8259_IRQ11, /* PIRQC */ 47 ULI_8259_IRQ12, /* PIRQD */ 48 ULI_8259_IRQ5, /* PIRQE */ 49 ULI_8259_IRQ6, /* PIRQF */ 50 ULI_8259_IRQ7, /* PIRQG */ 51 ULI_8259_NONE, /* PIRQH */ 52 }; 53 54 static inline bool is_quirk_valid(void) 55 { 56 return (machine_is(mpc86xx_hpcn) || 57 machine_is(mpc8544_ds) || 58 machine_is(p2020_ds) || 59 machine_is(mpc8572_ds)); 60 } 61 62 /* Bridge */ 63 static void __devinit early_uli5249(struct pci_dev *dev) 64 { 65 unsigned char temp; 66 67 if (!is_quirk_valid()) 68 return; 69 70 pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_IO | 71 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); 72 73 /* read/write lock */ 74 pci_read_config_byte(dev, 0x7c, &temp); 75 pci_write_config_byte(dev, 0x7c, 0x80); 76 77 /* set as P2P bridge */ 78 pci_write_config_byte(dev, PCI_CLASS_PROG, 0x01); 79 dev->class |= 0x1; 80 81 /* restore lock */ 82 pci_write_config_byte(dev, 0x7c, temp); 83 } 84 85 86 static void __devinit quirk_uli1575(struct pci_dev *dev) 87 { 88 int i; 89 90 if (!is_quirk_valid()) 91 return; 92 93 /* 94 * ULI1575 interrupts route setup 95 */ 96 97 /* ULI1575 IRQ mapping conf register maps PIRQx to IRQn */ 98 for (i = 0; i < 4; i++) { 99 u8 val = uli_pirq_to_irq[i*2] | (uli_pirq_to_irq[i*2+1] << 4); 100 pci_write_config_byte(dev, 0x48 + i, val); 101 } 102 103 /* USB 1.1 OHCI controller 1: dev 28, func 0 - IRQ12 */ 104 pci_write_config_byte(dev, 0x86, ULI_PIRQD); 105 106 /* USB 1.1 OHCI controller 2: dev 28, func 1 - IRQ9 */ 107 pci_write_config_byte(dev, 0x87, ULI_PIRQA); 108 109 /* USB 1.1 OHCI controller 3: dev 28, func 2 - IRQ10 */ 110 pci_write_config_byte(dev, 0x88, ULI_PIRQB); 111 112 /* Lan controller: dev 27, func 0 - IRQ6 */ 113 pci_write_config_byte(dev, 0x89, ULI_PIRQF); 114 115 /* AC97 Audio controller: dev 29, func 0 - IRQ6 */ 116 pci_write_config_byte(dev, 0x8a, ULI_PIRQF); 117 118 /* Modem controller: dev 29, func 1 - IRQ6 */ 119 pci_write_config_byte(dev, 0x8b, ULI_PIRQF); 120 121 /* HD Audio controller: dev 29, func 2 - IRQ6 */ 122 pci_write_config_byte(dev, 0x8c, ULI_PIRQF); 123 124 /* SATA controller: dev 31, func 1 - IRQ5 */ 125 pci_write_config_byte(dev, 0x8d, ULI_PIRQE); 126 127 /* SMB interrupt: dev 30, func 1 - IRQ7 */ 128 pci_write_config_byte(dev, 0x8e, ULI_PIRQG); 129 130 /* PMU ACPI SCI interrupt: dev 30, func 2 - IRQ7 */ 131 pci_write_config_byte(dev, 0x8f, ULI_PIRQG); 132 133 /* USB 2.0 controller: dev 28, func 3 */ 134 pci_write_config_byte(dev, 0x74, ULI_8259_IRQ11); 135 136 /* Primary PATA IDE IRQ: 14 137 * Secondary PATA IDE IRQ: 15 138 */ 139 pci_write_config_byte(dev, 0x44, 0x30 | ULI_8259_IRQ14); 140 pci_write_config_byte(dev, 0x75, ULI_8259_IRQ15); 141 } 142 143 static void __devinit quirk_final_uli1575(struct pci_dev *dev) 144 { 145 /* Set i8259 interrupt trigger 146 * IRQ 3: Level 147 * IRQ 4: Level 148 * IRQ 5: Level 149 * IRQ 6: Level 150 * IRQ 7: Level 151 * IRQ 9: Level 152 * IRQ 10: Level 153 * IRQ 11: Level 154 * IRQ 12: Level 155 * IRQ 14: Edge 156 * IRQ 15: Edge 157 */ 158 if (!is_quirk_valid()) 159 return; 160 161 outb(0xfa, 0x4d0); 162 outb(0x1e, 0x4d1); 163 164 /* setup RTC */ 165 CMOS_WRITE(RTC_SET, RTC_CONTROL); 166 CMOS_WRITE(RTC_24H, RTC_CONTROL); 167 168 /* ensure month, date, and week alarm fields are ignored */ 169 CMOS_WRITE(0, RTC_VALID); 170 171 outb_p(0x7c, 0x72); 172 outb_p(RTC_ALARM_DONT_CARE, 0x73); 173 174 outb_p(0x7d, 0x72); 175 outb_p(RTC_ALARM_DONT_CARE, 0x73); 176 } 177 178 /* SATA */ 179 static void __devinit quirk_uli5288(struct pci_dev *dev) 180 { 181 unsigned char c; 182 unsigned int d; 183 184 if (!is_quirk_valid()) 185 return; 186 187 /* read/write lock */ 188 pci_read_config_byte(dev, 0x83, &c); 189 pci_write_config_byte(dev, 0x83, c|0x80); 190 191 pci_read_config_dword(dev, PCI_CLASS_REVISION, &d); 192 d = (d & 0xff) | (PCI_CLASS_STORAGE_SATA_AHCI << 8); 193 pci_write_config_dword(dev, PCI_CLASS_REVISION, d); 194 195 /* restore lock */ 196 pci_write_config_byte(dev, 0x83, c); 197 198 /* disable emulated PATA mode enabled */ 199 pci_read_config_byte(dev, 0x84, &c); 200 pci_write_config_byte(dev, 0x84, c & ~0x01); 201 } 202 203 /* PATA */ 204 static void __devinit quirk_uli5229(struct pci_dev *dev) 205 { 206 unsigned short temp; 207 208 if (!is_quirk_valid()) 209 return; 210 211 pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_INTX_DISABLE | 212 PCI_COMMAND_MASTER | PCI_COMMAND_IO); 213 214 /* Enable Native IRQ 14/15 */ 215 pci_read_config_word(dev, 0x4a, &temp); 216 pci_write_config_word(dev, 0x4a, temp | 0x1000); 217 } 218 219 /* We have to do a dummy read on the P2P for the RTC to work, WTF */ 220 static void __devinit quirk_final_uli5249(struct pci_dev *dev) 221 { 222 int i; 223 u8 *dummy; 224 struct pci_bus *bus = dev->bus; 225 resource_size_t end = 0; 226 227 for (i = PCI_BRIDGE_RESOURCES; i < PCI_BRIDGE_RESOURCES+3; i++) { 228 unsigned long flags = pci_resource_flags(dev, i); 229 if ((flags & (IORESOURCE_MEM|IORESOURCE_PREFETCH)) == IORESOURCE_MEM) 230 end = pci_resource_end(dev, i); 231 } 232 233 for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) { 234 if ((bus->resource[i]) && 235 (bus->resource[i]->flags & IORESOURCE_MEM)) { 236 if (bus->resource[i]->end == end) 237 dummy = ioremap(bus->resource[i]->start, 0x4); 238 else 239 dummy = ioremap(bus->resource[i]->end - 3, 0x4); 240 if (dummy) { 241 in_8(dummy); 242 iounmap(dummy); 243 } 244 break; 245 } 246 } 247 } 248 249 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249); 250 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575); 251 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288); 252 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229); 253 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x5249, quirk_final_uli5249); 254 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x1575, quirk_final_uli1575); 255 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229); 256 257 static void __devinit hpcd_quirk_uli1575(struct pci_dev *dev) 258 { 259 u32 temp32; 260 261 if (!machine_is(mpc86xx_hpcd)) 262 return; 263 264 /* Disable INTx */ 265 pci_read_config_dword(dev, 0x48, &temp32); 266 pci_write_config_dword(dev, 0x48, (temp32 | 1<<26)); 267 268 /* Enable sideband interrupt */ 269 pci_read_config_dword(dev, 0x90, &temp32); 270 pci_write_config_dword(dev, 0x90, (temp32 | 1<<22)); 271 } 272 273 static void __devinit hpcd_quirk_uli5288(struct pci_dev *dev) 274 { 275 unsigned char c; 276 277 if (!machine_is(mpc86xx_hpcd)) 278 return; 279 280 pci_read_config_byte(dev, 0x83, &c); 281 c |= 0x80; 282 pci_write_config_byte(dev, 0x83, c); 283 284 pci_write_config_byte(dev, PCI_CLASS_PROG, 0x01); 285 pci_write_config_byte(dev, PCI_CLASS_DEVICE, 0x06); 286 287 pci_read_config_byte(dev, 0x83, &c); 288 c &= 0x7f; 289 pci_write_config_byte(dev, 0x83, c); 290 } 291 292 /* 293 * Since 8259PIC was disabled on the board, the IDE device can not 294 * use the legacy IRQ, we need to let the IDE device work under 295 * native mode and use the interrupt line like other PCI devices. 296 * IRQ14 is a sideband interrupt from IDE device to CPU and we use this 297 * as the interrupt for IDE device. 298 */ 299 static void __devinit hpcd_quirk_uli5229(struct pci_dev *dev) 300 { 301 unsigned char c; 302 303 if (!machine_is(mpc86xx_hpcd)) 304 return; 305 306 pci_read_config_byte(dev, 0x4b, &c); 307 c |= 0x10; 308 pci_write_config_byte(dev, 0x4b, c); 309 } 310 311 /* 312 * SATA interrupt pin bug fix 313 * There's a chip bug for 5288, The interrupt pin should be 2, 314 * not the read only value 1, So it use INTB#, not INTA# which 315 * actually used by the IDE device 5229. 316 * As of this bug, during the PCI initialization, 5288 read the 317 * irq of IDE device from the device tree, this function fix this 318 * bug by re-assigning a correct irq to 5288. 319 * 320 */ 321 static void __devinit hpcd_final_uli5288(struct pci_dev *dev) 322 { 323 struct pci_controller *hose = pci_bus_to_host(dev->bus); 324 struct device_node *hosenode = hose ? hose->dn : NULL; 325 struct of_irq oirq; 326 int virq, pin = 2; 327 u32 laddr[3]; 328 329 if (!machine_is(mpc86xx_hpcd)) 330 return; 331 332 if (!hosenode) 333 return; 334 335 laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(31, 0) << 8); 336 laddr[1] = laddr[2] = 0; 337 of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq); 338 virq = irq_create_of_mapping(oirq.controller, oirq.specifier, 339 oirq.size); 340 dev->irq = virq; 341 } 342 343 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, hpcd_quirk_uli1575); 344 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, hpcd_quirk_uli5288); 345 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, hpcd_quirk_uli5229); 346 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x5288, hpcd_final_uli5288); 347 348 int uli_exclude_device(struct pci_controller *hose, 349 u_char bus, u_char devfn) 350 { 351 if (bus == (hose->first_busno + 2)) { 352 /* exclude Modem controller */ 353 if ((PCI_SLOT(devfn) == 29) && (PCI_FUNC(devfn) == 1)) 354 return PCIBIOS_DEVICE_NOT_FOUND; 355 356 /* exclude HD Audio controller */ 357 if ((PCI_SLOT(devfn) == 29) && (PCI_FUNC(devfn) == 2)) 358 return PCIBIOS_DEVICE_NOT_FOUND; 359 } 360 361 return PCIBIOS_SUCCESSFUL; 362 } 363