Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * pcic.c: MicroSPARC-IIep PCI controller support |
| 3 | * |
| 4 | * Copyright (C) 1998 V. Roganov and G. Raiko |
| 5 | * |
| 6 | * Code is derived from Ultra/PCI PSYCHO controller support, see that |
| 7 | * for author info. |
| 8 | * |
| 9 | * Support for diverse IIep based platforms by Pete Zaitcev. |
| 10 | * CP-1200 by Eric Brower. |
| 11 | */ |
| 12 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/kernel.h> |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/mm.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/jiffies.h> |
| 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <asm/swift.h> /* for cache flushing. */ |
| 21 | #include <asm/io.h> |
| 22 | |
| 23 | #include <linux/ctype.h> |
| 24 | #include <linux/pci.h> |
| 25 | #include <linux/time.h> |
| 26 | #include <linux/timex.h> |
| 27 | #include <linux/interrupt.h> |
Paul Gortmaker | 7b64db6 | 2011-07-18 15:57:46 -0400 | [diff] [blame] | 28 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | #include <asm/irq.h> |
| 31 | #include <asm/oplib.h> |
David S. Miller | 942a6bd | 2006-06-23 15:53:31 -0700 | [diff] [blame] | 32 | #include <asm/prom.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <asm/pcic.h> |
John Stultz | 0299b13 | 2010-01-15 01:34:28 -0800 | [diff] [blame] | 34 | #include <asm/timex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <asm/timer.h> |
| 36 | #include <asm/uaccess.h> |
David S. Miller | c2baeb0 | 2006-10-10 14:17:05 -0700 | [diff] [blame] | 37 | #include <asm/irq_regs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Sam Ravnborg | 7738925 | 2014-05-16 23:25:42 +0200 | [diff] [blame] | 39 | #include "kernel.h" |
Al Viro | 32231a6 | 2007-07-21 19:18:57 -0700 | [diff] [blame] | 40 | #include "irq.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | /* |
| 43 | * I studied different documents and many live PROMs both from 2.30 |
| 44 | * family and 3.xx versions. I came to the amazing conclusion: there is |
| 45 | * absolutely no way to route interrupts in IIep systems relying on |
| 46 | * information which PROM presents. We must hardcode interrupt routing |
| 47 | * schematics. And this actually sucks. -- zaitcev 1999/05/12 |
| 48 | * |
| 49 | * To find irq for a device we determine which routing map |
| 50 | * is in effect or, in other words, on which machine we are running. |
| 51 | * We use PROM name for this although other techniques may be used |
| 52 | * in special cases (Gleb reports a PROMless IIep based system). |
| 53 | * Once we know the map we take device configuration address and |
| 54 | * find PCIC pin number where INT line goes. Then we may either program |
| 55 | * preferred irq into the PCIC or supply the preexisting irq to the device. |
| 56 | */ |
| 57 | struct pcic_ca2irq { |
| 58 | unsigned char busno; /* PCI bus number */ |
| 59 | unsigned char devfn; /* Configuration address */ |
| 60 | unsigned char pin; /* PCIC external interrupt pin */ |
| 61 | unsigned char irq; /* Preferred IRQ (mappable in PCIC) */ |
| 62 | unsigned int force; /* Enforce preferred IRQ */ |
| 63 | }; |
| 64 | |
| 65 | struct pcic_sn2list { |
| 66 | char *sysname; |
| 67 | struct pcic_ca2irq *intmap; |
| 68 | int mapdim; |
| 69 | }; |
| 70 | |
| 71 | /* |
| 72 | * JavaEngine-1 apparently has different versions. |
| 73 | * |
| 74 | * According to communications with Sun folks, for P2 build 501-4628-03: |
| 75 | * pin 0 - parallel, audio; |
| 76 | * pin 1 - Ethernet; |
| 77 | * pin 2 - su; |
| 78 | * pin 3 - PS/2 kbd and mouse. |
| 79 | * |
| 80 | * OEM manual (805-1486): |
| 81 | * pin 0: Ethernet |
| 82 | * pin 1: All EBus |
| 83 | * pin 2: IGA (unused) |
| 84 | * pin 3: Not connected |
| 85 | * OEM manual says that 501-4628 & 501-4811 are the same thing, |
| 86 | * only the latter has NAND flash in place. |
| 87 | * |
| 88 | * So far unofficial Sun wins over the OEM manual. Poor OEMs... |
| 89 | */ |
| 90 | static struct pcic_ca2irq pcic_i_je1a[] = { /* 501-4811-03 */ |
| 91 | { 0, 0x00, 2, 12, 0 }, /* EBus: hogs all */ |
| 92 | { 0, 0x01, 1, 6, 1 }, /* Happy Meal */ |
| 93 | { 0, 0x80, 0, 7, 0 }, /* IGA (unused) */ |
| 94 | }; |
| 95 | |
| 96 | /* XXX JS-E entry is incomplete - PCI Slot 2 address (pin 7)? */ |
| 97 | static struct pcic_ca2irq pcic_i_jse[] = { |
| 98 | { 0, 0x00, 0, 13, 0 }, /* Ebus - serial and keyboard */ |
| 99 | { 0, 0x01, 1, 6, 0 }, /* hme */ |
| 100 | { 0, 0x08, 2, 9, 0 }, /* VGA - we hope not used :) */ |
| 101 | { 0, 0x10, 6, 8, 0 }, /* PCI INTA# in Slot 1 */ |
| 102 | { 0, 0x18, 7, 12, 0 }, /* PCI INTA# in Slot 2, shared w. RTC */ |
| 103 | { 0, 0x38, 4, 9, 0 }, /* All ISA devices. Read 8259. */ |
| 104 | { 0, 0x80, 5, 11, 0 }, /* EIDE */ |
| 105 | /* {0,0x88, 0,0,0} - unknown device... PMU? Probably no interrupt. */ |
| 106 | { 0, 0xA0, 4, 9, 0 }, /* USB */ |
| 107 | /* |
| 108 | * Some pins belong to non-PCI devices, we hardcode them in drivers. |
| 109 | * sun4m timers - irq 10, 14 |
| 110 | * PC style RTC - pin 7, irq 4 ? |
| 111 | * Smart card, Parallel - pin 4 shared with USB, ISA |
| 112 | * audio - pin 3, irq 5 ? |
| 113 | */ |
| 114 | }; |
| 115 | |
| 116 | /* SPARCengine-6 was the original release name of CP1200. |
| 117 | * The documentation differs between the two versions |
| 118 | */ |
| 119 | static struct pcic_ca2irq pcic_i_se6[] = { |
| 120 | { 0, 0x08, 0, 2, 0 }, /* SCSI */ |
| 121 | { 0, 0x01, 1, 6, 0 }, /* HME */ |
| 122 | { 0, 0x00, 3, 13, 0 }, /* EBus */ |
| 123 | }; |
| 124 | |
| 125 | /* |
| 126 | * Krups (courtesy of Varol Kaptan) |
| 127 | * No documentation available, but it was easy to guess |
| 128 | * because it was very similar to Espresso. |
| 129 | * |
| 130 | * pin 0 - kbd, mouse, serial; |
| 131 | * pin 1 - Ethernet; |
| 132 | * pin 2 - igs (we do not use it); |
| 133 | * pin 3 - audio; |
| 134 | * pin 4,5,6 - unused; |
| 135 | * pin 7 - RTC (from P2 onwards as David B. says). |
| 136 | */ |
| 137 | static struct pcic_ca2irq pcic_i_jk[] = { |
| 138 | { 0, 0x00, 0, 13, 0 }, /* Ebus - serial and keyboard */ |
| 139 | { 0, 0x01, 1, 6, 0 }, /* hme */ |
| 140 | }; |
| 141 | |
| 142 | /* |
| 143 | * Several entries in this list may point to the same routing map |
| 144 | * as several PROMs may be installed on the same physical board. |
| 145 | */ |
| 146 | #define SN2L_INIT(name, map) \ |
Tobias Klauser | 940fdc6 | 2005-11-09 12:03:05 -0800 | [diff] [blame] | 147 | { name, map, ARRAY_SIZE(map) } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
| 149 | static struct pcic_sn2list pcic_known_sysnames[] = { |
| 150 | SN2L_INIT("SUNW,JavaEngine1", pcic_i_je1a), /* JE1, PROM 2.32 */ |
| 151 | SN2L_INIT("SUNW,JS-E", pcic_i_jse), /* PROLL JavaStation-E */ |
| 152 | SN2L_INIT("SUNW,SPARCengine-6", pcic_i_se6), /* SPARCengine-6/CP-1200 */ |
| 153 | SN2L_INIT("SUNW,JS-NC", pcic_i_jk), /* PROLL JavaStation-NC */ |
| 154 | SN2L_INIT("SUNW,JSIIep", pcic_i_jk), /* OBP JavaStation-NC */ |
| 155 | { NULL, NULL, 0 } |
| 156 | }; |
| 157 | |
| 158 | /* |
| 159 | * Only one PCIC per IIep, |
| 160 | * and since we have no SMP IIep, only one per system. |
| 161 | */ |
| 162 | static int pcic0_up; |
| 163 | static struct linux_pcic pcic0; |
| 164 | |
Al Viro | f8ad23a | 2005-12-06 05:44:18 -0500 | [diff] [blame] | 165 | void __iomem *pcic_regs; |
Sam Ravnborg | 7738925 | 2014-05-16 23:25:42 +0200 | [diff] [blame] | 166 | static volatile int pcic_speculative; |
| 167 | static volatile int pcic_trapped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 169 | /* forward */ |
| 170 | unsigned int pcic_build_device_irq(struct platform_device *op, |
| 171 | unsigned int real_irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
| 173 | #define CONFIG_CMD(bus, device_fn, where) (0x80000000 | (((unsigned int)bus) << 16) | (((unsigned int)device_fn) << 8) | (where & ~3)) |
| 174 | |
| 175 | static int pcic_read_config_dword(unsigned int busno, unsigned int devfn, |
| 176 | int where, u32 *value) |
| 177 | { |
| 178 | struct linux_pcic *pcic; |
| 179 | unsigned long flags; |
| 180 | |
| 181 | pcic = &pcic0; |
| 182 | |
| 183 | local_irq_save(flags); |
| 184 | #if 0 /* does not fail here */ |
| 185 | pcic_speculative = 1; |
| 186 | pcic_trapped = 0; |
| 187 | #endif |
| 188 | writel(CONFIG_CMD(busno, devfn, where), pcic->pcic_config_space_addr); |
| 189 | #if 0 /* does not fail here */ |
| 190 | nop(); |
| 191 | if (pcic_trapped) { |
| 192 | local_irq_restore(flags); |
| 193 | *value = ~0; |
| 194 | return 0; |
| 195 | } |
| 196 | #endif |
| 197 | pcic_speculative = 2; |
| 198 | pcic_trapped = 0; |
| 199 | *value = readl(pcic->pcic_config_space_data + (where&4)); |
| 200 | nop(); |
| 201 | if (pcic_trapped) { |
| 202 | pcic_speculative = 0; |
| 203 | local_irq_restore(flags); |
| 204 | *value = ~0; |
| 205 | return 0; |
| 206 | } |
| 207 | pcic_speculative = 0; |
| 208 | local_irq_restore(flags); |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | static int pcic_read_config(struct pci_bus *bus, unsigned int devfn, |
| 213 | int where, int size, u32 *val) |
| 214 | { |
| 215 | unsigned int v; |
| 216 | |
| 217 | if (bus->number != 0) return -EINVAL; |
| 218 | switch (size) { |
| 219 | case 1: |
| 220 | pcic_read_config_dword(bus->number, devfn, where&~3, &v); |
| 221 | *val = 0xff & (v >> (8*(where & 3))); |
| 222 | return 0; |
| 223 | case 2: |
| 224 | if (where&1) return -EINVAL; |
| 225 | pcic_read_config_dword(bus->number, devfn, where&~3, &v); |
| 226 | *val = 0xffff & (v >> (8*(where & 3))); |
| 227 | return 0; |
| 228 | case 4: |
| 229 | if (where&3) return -EINVAL; |
| 230 | pcic_read_config_dword(bus->number, devfn, where&~3, val); |
| 231 | return 0; |
| 232 | } |
| 233 | return -EINVAL; |
| 234 | } |
| 235 | |
| 236 | static int pcic_write_config_dword(unsigned int busno, unsigned int devfn, |
| 237 | int where, u32 value) |
| 238 | { |
| 239 | struct linux_pcic *pcic; |
| 240 | unsigned long flags; |
| 241 | |
| 242 | pcic = &pcic0; |
| 243 | |
| 244 | local_irq_save(flags); |
| 245 | writel(CONFIG_CMD(busno, devfn, where), pcic->pcic_config_space_addr); |
| 246 | writel(value, pcic->pcic_config_space_data + (where&4)); |
| 247 | local_irq_restore(flags); |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | static int pcic_write_config(struct pci_bus *bus, unsigned int devfn, |
| 252 | int where, int size, u32 val) |
| 253 | { |
| 254 | unsigned int v; |
| 255 | |
| 256 | if (bus->number != 0) return -EINVAL; |
| 257 | switch (size) { |
| 258 | case 1: |
| 259 | pcic_read_config_dword(bus->number, devfn, where&~3, &v); |
| 260 | v = (v & ~(0xff << (8*(where&3)))) | |
| 261 | ((0xff&val) << (8*(where&3))); |
| 262 | return pcic_write_config_dword(bus->number, devfn, where&~3, v); |
| 263 | case 2: |
| 264 | if (where&1) return -EINVAL; |
| 265 | pcic_read_config_dword(bus->number, devfn, where&~3, &v); |
| 266 | v = (v & ~(0xffff << (8*(where&3)))) | |
| 267 | ((0xffff&val) << (8*(where&3))); |
| 268 | return pcic_write_config_dword(bus->number, devfn, where&~3, v); |
| 269 | case 4: |
| 270 | if (where&3) return -EINVAL; |
| 271 | return pcic_write_config_dword(bus->number, devfn, where, val); |
| 272 | } |
| 273 | return -EINVAL; |
| 274 | } |
| 275 | |
| 276 | static struct pci_ops pcic_ops = { |
| 277 | .read = pcic_read_config, |
| 278 | .write = pcic_write_config, |
| 279 | }; |
| 280 | |
| 281 | /* |
| 282 | * On sparc64 pcibios_init() calls pci_controller_probe(). |
| 283 | * We want PCIC probed little ahead so that interrupt controller |
| 284 | * would be operational. |
| 285 | */ |
| 286 | int __init pcic_probe(void) |
| 287 | { |
| 288 | struct linux_pcic *pcic; |
| 289 | struct linux_prom_registers regs[PROMREG_MAX]; |
| 290 | struct linux_pbm_info* pbm; |
| 291 | char namebuf[64]; |
Andres Salomon | 8d12556 | 2010-10-08 14:18:11 -0700 | [diff] [blame] | 292 | phandle node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | int err; |
| 294 | |
| 295 | if (pcic0_up) { |
| 296 | prom_printf("PCIC: called twice!\n"); |
| 297 | prom_halt(); |
| 298 | } |
| 299 | pcic = &pcic0; |
| 300 | |
| 301 | node = prom_getchild (prom_root_node); |
| 302 | node = prom_searchsiblings (node, "pci"); |
| 303 | if (node == 0) |
| 304 | return -ENODEV; |
| 305 | /* |
| 306 | * Map in PCIC register set, config space, and IO base |
| 307 | */ |
| 308 | err = prom_getproperty(node, "reg", (char*)regs, sizeof(regs)); |
| 309 | if (err == 0 || err == -1) { |
| 310 | prom_printf("PCIC: Error, cannot get PCIC registers " |
| 311 | "from PROM.\n"); |
| 312 | prom_halt(); |
| 313 | } |
| 314 | |
| 315 | pcic0_up = 1; |
| 316 | |
| 317 | pcic->pcic_res_regs.name = "pcic_registers"; |
| 318 | pcic->pcic_regs = ioremap(regs[0].phys_addr, regs[0].reg_size); |
| 319 | if (!pcic->pcic_regs) { |
| 320 | prom_printf("PCIC: Error, cannot map PCIC registers.\n"); |
| 321 | prom_halt(); |
| 322 | } |
| 323 | |
| 324 | pcic->pcic_res_io.name = "pcic_io"; |
| 325 | if ((pcic->pcic_io = (unsigned long) |
| 326 | ioremap(regs[1].phys_addr, 0x10000)) == 0) { |
| 327 | prom_printf("PCIC: Error, cannot map PCIC IO Base.\n"); |
| 328 | prom_halt(); |
| 329 | } |
| 330 | |
| 331 | pcic->pcic_res_cfg_addr.name = "pcic_cfg_addr"; |
| 332 | if ((pcic->pcic_config_space_addr = |
Sam Ravnborg | 7738925 | 2014-05-16 23:25:42 +0200 | [diff] [blame] | 333 | ioremap(regs[2].phys_addr, regs[2].reg_size * 2)) == NULL) { |
Joe Perches | 794b26e | 2007-11-19 23:45:16 -0800 | [diff] [blame] | 334 | prom_printf("PCIC: Error, cannot map " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | "PCI Configuration Space Address.\n"); |
| 336 | prom_halt(); |
| 337 | } |
| 338 | |
| 339 | /* |
| 340 | * Docs say three least significant bits in address and data |
| 341 | * must be the same. Thus, we need adjust size of data. |
| 342 | */ |
| 343 | pcic->pcic_res_cfg_data.name = "pcic_cfg_data"; |
| 344 | if ((pcic->pcic_config_space_data = |
Sam Ravnborg | 7738925 | 2014-05-16 23:25:42 +0200 | [diff] [blame] | 345 | ioremap(regs[3].phys_addr, regs[3].reg_size * 2)) == NULL) { |
Joe Perches | 794b26e | 2007-11-19 23:45:16 -0800 | [diff] [blame] | 346 | prom_printf("PCIC: Error, cannot map " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | "PCI Configuration Space Data.\n"); |
| 348 | prom_halt(); |
| 349 | } |
| 350 | |
| 351 | pbm = &pcic->pbm; |
| 352 | pbm->prom_node = node; |
| 353 | prom_getstring(node, "name", namebuf, 63); namebuf[63] = 0; |
| 354 | strcpy(pbm->prom_name, namebuf); |
| 355 | |
| 356 | { |
Ian Campbell | 4a0342c | 2011-08-17 22:14:57 +0000 | [diff] [blame] | 357 | extern int pcic_nmi_trap_patch[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
| 359 | t_nmi[0] = pcic_nmi_trap_patch[0]; |
| 360 | t_nmi[1] = pcic_nmi_trap_patch[1]; |
| 361 | t_nmi[2] = pcic_nmi_trap_patch[2]; |
| 362 | t_nmi[3] = pcic_nmi_trap_patch[3]; |
| 363 | swift_flush_dcache(); |
| 364 | pcic_regs = pcic->pcic_regs; |
| 365 | } |
| 366 | |
| 367 | prom_getstring(prom_root_node, "name", namebuf, 63); namebuf[63] = 0; |
| 368 | { |
| 369 | struct pcic_sn2list *p; |
| 370 | |
| 371 | for (p = pcic_known_sysnames; p->sysname != NULL; p++) { |
| 372 | if (strcmp(namebuf, p->sysname) == 0) |
| 373 | break; |
| 374 | } |
| 375 | pcic->pcic_imap = p->intmap; |
| 376 | pcic->pcic_imdim = p->mapdim; |
| 377 | } |
| 378 | if (pcic->pcic_imap == NULL) { |
| 379 | /* |
| 380 | * We do not panic here for the sake of embedded systems. |
| 381 | */ |
| 382 | printk("PCIC: System %s is unknown, cannot route interrupts\n", |
| 383 | namebuf); |
| 384 | } |
| 385 | |
| 386 | return 0; |
| 387 | } |
| 388 | |
| 389 | static void __init pcic_pbm_scan_bus(struct linux_pcic *pcic) |
| 390 | { |
| 391 | struct linux_pbm_info *pbm = &pcic->pbm; |
| 392 | |
| 393 | pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, &pcic_ops, pbm); |
| 394 | #if 0 /* deadwood transplanted from sparc64 */ |
| 395 | pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node); |
| 396 | pci_record_assignments(pbm, pbm->pci_bus); |
| 397 | pci_assign_unassigned(pbm, pbm->pci_bus); |
| 398 | pci_fixup_irq(pbm, pbm->pci_bus); |
| 399 | #endif |
| 400 | } |
| 401 | |
| 402 | /* |
| 403 | * Main entry point from the PCI subsystem. |
| 404 | */ |
| 405 | static int __init pcic_init(void) |
| 406 | { |
| 407 | struct linux_pcic *pcic; |
| 408 | |
| 409 | /* |
| 410 | * PCIC should be initialized at start of the timer. |
| 411 | * So, here we report the presence of PCIC and do some magic passes. |
| 412 | */ |
| 413 | if(!pcic0_up) |
| 414 | return 0; |
| 415 | pcic = &pcic0; |
| 416 | |
| 417 | /* |
| 418 | * Switch off IOTLB translation. |
| 419 | */ |
| 420 | writeb(PCI_DVMA_CONTROL_IOTLB_DISABLE, |
| 421 | pcic->pcic_regs+PCI_DVMA_CONTROL); |
| 422 | |
| 423 | /* |
| 424 | * Increase mapped size for PCI memory space (DMA access). |
| 425 | * Should be done in that order (size first, address second). |
| 426 | * Why we couldn't set up 4GB and forget about it? XXX |
| 427 | */ |
| 428 | writel(0xF0000000UL, pcic->pcic_regs+PCI_SIZE_0); |
| 429 | writel(0+PCI_BASE_ADDRESS_SPACE_MEMORY, |
| 430 | pcic->pcic_regs+PCI_BASE_ADDRESS_0); |
| 431 | |
| 432 | pcic_pbm_scan_bus(pcic); |
| 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | return 0; |
| 435 | } |
| 436 | |
| 437 | int pcic_present(void) |
| 438 | { |
| 439 | return pcic0_up; |
| 440 | } |
| 441 | |
Greg Kroah-Hartman | 7c9503b | 2012-12-21 14:03:26 -0800 | [diff] [blame] | 442 | static int pdev_to_pnode(struct linux_pbm_info *pbm, struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | { |
| 444 | struct linux_prom_pci_registers regs[PROMREG_MAX]; |
| 445 | int err; |
Andres Salomon | 8d12556 | 2010-10-08 14:18:11 -0700 | [diff] [blame] | 446 | phandle node = prom_getchild(pbm->prom_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | |
| 448 | while(node) { |
| 449 | err = prom_getproperty(node, "reg", |
| 450 | (char *)®s[0], sizeof(regs)); |
| 451 | if(err != 0 && err != -1) { |
| 452 | unsigned long devfn = (regs[0].which_io >> 8) & 0xff; |
| 453 | if(devfn == pdev->devfn) |
| 454 | return node; |
| 455 | } |
| 456 | node = prom_getsibling(node); |
| 457 | } |
| 458 | return 0; |
| 459 | } |
| 460 | |
| 461 | static inline struct pcidev_cookie *pci_devcookie_alloc(void) |
| 462 | { |
| 463 | return kmalloc(sizeof(struct pcidev_cookie), GFP_ATOMIC); |
| 464 | } |
| 465 | |
| 466 | static void pcic_map_pci_device(struct linux_pcic *pcic, |
| 467 | struct pci_dev *dev, int node) |
| 468 | { |
| 469 | char namebuf[64]; |
| 470 | unsigned long address; |
| 471 | unsigned long flags; |
| 472 | int j; |
| 473 | |
| 474 | if (node == 0 || node == -1) { |
| 475 | strcpy(namebuf, "???"); |
| 476 | } else { |
| 477 | prom_getstring(node, "name", namebuf, 63); namebuf[63] = 0; |
| 478 | } |
| 479 | |
| 480 | for (j = 0; j < 6; j++) { |
| 481 | address = dev->resource[j].start; |
| 482 | if (address == 0) break; /* are sequential */ |
| 483 | flags = dev->resource[j].flags; |
| 484 | if ((flags & IORESOURCE_IO) != 0) { |
| 485 | if (address < 0x10000) { |
| 486 | /* |
| 487 | * A device responds to I/O cycles on PCI. |
| 488 | * We generate these cycles with memory |
| 489 | * access into the fixed map (phys 0x30000000). |
| 490 | * |
| 491 | * Since a device driver does not want to |
| 492 | * do ioremap() before accessing PC-style I/O, |
| 493 | * we supply virtual, ready to access address. |
| 494 | * |
Jeff Garzik | d61780c | 2005-10-30 15:01:51 -0800 | [diff] [blame] | 495 | * Note that request_region() |
| 496 | * works for these devices. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | * |
| 498 | * XXX Neat trick, but it's a *bad* idea |
| 499 | * to shit into regions like that. |
| 500 | * What if we want to allocate one more |
| 501 | * PCI base address... |
| 502 | */ |
| 503 | dev->resource[j].start = |
| 504 | pcic->pcic_io + address; |
| 505 | dev->resource[j].end = 1; /* XXX */ |
| 506 | dev->resource[j].flags = |
| 507 | (flags & ~IORESOURCE_IO) | IORESOURCE_MEM; |
| 508 | } else { |
| 509 | /* |
| 510 | * OOPS... PCI Spec allows this. Sun does |
| 511 | * not have any devices getting above 64K |
| 512 | * so it must be user with a weird I/O |
| 513 | * board in a PCI slot. We must remap it |
| 514 | * under 64K but it is not done yet. XXX |
| 515 | */ |
Joe Perches | 794b26e | 2007-11-19 23:45:16 -0800 | [diff] [blame] | 516 | printk("PCIC: Skipping I/O space at 0x%lx, " |
| 517 | "this will Oops if a driver attaches " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | "device '%s' at %02x:%02x)\n", address, |
| 519 | namebuf, dev->bus->number, dev->devfn); |
| 520 | } |
| 521 | } |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | static void |
| 526 | pcic_fill_irq(struct linux_pcic *pcic, struct pci_dev *dev, int node) |
| 527 | { |
| 528 | struct pcic_ca2irq *p; |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 529 | unsigned int real_irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | int i, ivec; |
| 531 | char namebuf[64]; |
| 532 | |
| 533 | if (node == 0 || node == -1) { |
| 534 | strcpy(namebuf, "???"); |
| 535 | } else { |
| 536 | prom_getstring(node, "name", namebuf, sizeof(namebuf)); |
| 537 | } |
| 538 | |
Sam Ravnborg | 7738925 | 2014-05-16 23:25:42 +0200 | [diff] [blame] | 539 | if ((p = pcic->pcic_imap) == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | dev->irq = 0; |
| 541 | return; |
| 542 | } |
| 543 | for (i = 0; i < pcic->pcic_imdim; i++) { |
| 544 | if (p->busno == dev->bus->number && p->devfn == dev->devfn) |
| 545 | break; |
| 546 | p++; |
| 547 | } |
| 548 | if (i >= pcic->pcic_imdim) { |
| 549 | printk("PCIC: device %s devfn %02x:%02x not found in %d\n", |
| 550 | namebuf, dev->bus->number, dev->devfn, pcic->pcic_imdim); |
| 551 | dev->irq = 0; |
| 552 | return; |
| 553 | } |
| 554 | |
| 555 | i = p->pin; |
| 556 | if (i >= 0 && i < 4) { |
| 557 | ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO); |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 558 | real_irq = ivec >> (i << 2) & 0xF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | } else if (i >= 4 && i < 8) { |
| 560 | ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI); |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 561 | real_irq = ivec >> ((i-4) << 2) & 0xF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | } else { /* Corrupted map */ |
| 563 | printk("PCIC: BAD PIN %d\n", i); for (;;) {} |
| 564 | } |
| 565 | /* P3 */ /* printk("PCIC: device %s pin %d ivec 0x%x irq %x\n", namebuf, i, ivec, dev->irq); */ |
| 566 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 567 | /* real_irq means PROM did not bother to program the upper |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | * half of PCIC. This happens on JS-E with PROM 3.11, for instance. |
| 569 | */ |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 570 | if (real_irq == 0 || p->force) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | if (p->irq == 0 || p->irq >= 15) { /* Corrupted map */ |
| 572 | printk("PCIC: BAD IRQ %d\n", p->irq); for (;;) {} |
| 573 | } |
| 574 | printk("PCIC: setting irq %d at pin %d for device %02x:%02x\n", |
| 575 | p->irq, p->pin, dev->bus->number, dev->devfn); |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 576 | real_irq = p->irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | |
| 578 | i = p->pin; |
| 579 | if (i >= 4) { |
| 580 | ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI); |
| 581 | ivec &= ~(0xF << ((i - 4) << 2)); |
| 582 | ivec |= p->irq << ((i - 4) << 2); |
| 583 | writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_HI); |
| 584 | } else { |
| 585 | ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO); |
| 586 | ivec &= ~(0xF << (i << 2)); |
| 587 | ivec |= p->irq << (i << 2); |
| 588 | writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_LO); |
| 589 | } |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 590 | } |
| 591 | dev->irq = pcic_build_device_irq(NULL, real_irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | /* |
| 595 | * Normally called from {do_}pci_scan_bus... |
| 596 | */ |
Greg Kroah-Hartman | 7c9503b | 2012-12-21 14:03:26 -0800 | [diff] [blame] | 597 | void pcibios_fixup_bus(struct pci_bus *bus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | { |
| 599 | struct pci_dev *dev; |
| 600 | int i, has_io, has_mem; |
| 601 | unsigned int cmd; |
| 602 | struct linux_pcic *pcic; |
| 603 | /* struct linux_pbm_info* pbm = &pcic->pbm; */ |
| 604 | int node; |
| 605 | struct pcidev_cookie *pcp; |
| 606 | |
| 607 | if (!pcic0_up) { |
| 608 | printk("pcibios_fixup_bus: no PCIC\n"); |
| 609 | return; |
| 610 | } |
| 611 | pcic = &pcic0; |
| 612 | |
| 613 | /* |
| 614 | * Next crud is an equivalent of pbm = pcic_bus_to_pbm(bus); |
| 615 | */ |
| 616 | if (bus->number != 0) { |
| 617 | printk("pcibios_fixup_bus: nonzero bus 0x%x\n", bus->number); |
| 618 | return; |
| 619 | } |
| 620 | |
| 621 | list_for_each_entry(dev, &bus->devices, bus_list) { |
| 622 | |
| 623 | /* |
| 624 | * Comment from i386 branch: |
| 625 | * There are buggy BIOSes that forget to enable I/O and memory |
| 626 | * access to PCI devices. We try to fix this, but we need to |
| 627 | * be sure that the BIOS didn't forget to assign an address |
| 628 | * to the device. [mj] |
| 629 | * OBP is a case of such BIOS :-) |
| 630 | */ |
| 631 | has_io = has_mem = 0; |
| 632 | for(i=0; i<6; i++) { |
| 633 | unsigned long f = dev->resource[i].flags; |
| 634 | if (f & IORESOURCE_IO) { |
| 635 | has_io = 1; |
| 636 | } else if (f & IORESOURCE_MEM) |
| 637 | has_mem = 1; |
| 638 | } |
| 639 | pcic_read_config(dev->bus, dev->devfn, PCI_COMMAND, 2, &cmd); |
| 640 | if (has_io && !(cmd & PCI_COMMAND_IO)) { |
| 641 | printk("PCIC: Enabling I/O for device %02x:%02x\n", |
| 642 | dev->bus->number, dev->devfn); |
| 643 | cmd |= PCI_COMMAND_IO; |
| 644 | pcic_write_config(dev->bus, dev->devfn, |
| 645 | PCI_COMMAND, 2, cmd); |
| 646 | } |
| 647 | if (has_mem && !(cmd & PCI_COMMAND_MEMORY)) { |
| 648 | printk("PCIC: Enabling memory for device %02x:%02x\n", |
| 649 | dev->bus->number, dev->devfn); |
| 650 | cmd |= PCI_COMMAND_MEMORY; |
| 651 | pcic_write_config(dev->bus, dev->devfn, |
| 652 | PCI_COMMAND, 2, cmd); |
| 653 | } |
| 654 | |
| 655 | node = pdev_to_pnode(&pcic->pbm, dev); |
| 656 | if(node == 0) |
| 657 | node = -1; |
| 658 | |
| 659 | /* cookies */ |
| 660 | pcp = pci_devcookie_alloc(); |
| 661 | pcp->pbm = &pcic->pbm; |
David S. Miller | 942a6bd | 2006-06-23 15:53:31 -0700 | [diff] [blame] | 662 | pcp->prom_node = of_find_node_by_phandle(node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | dev->sysdata = pcp; |
| 664 | |
| 665 | /* fixing I/O to look like memory */ |
| 666 | if ((dev->class>>16) != PCI_BASE_CLASS_BRIDGE) |
| 667 | pcic_map_pci_device(pcic, dev, node); |
| 668 | |
| 669 | pcic_fill_irq(pcic, dev, node); |
| 670 | } |
| 671 | } |
| 672 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | /* Makes compiler happy */ |
| 674 | static volatile int pcic_timer_dummy; |
| 675 | |
| 676 | static void pcic_clear_clock_irq(void) |
| 677 | { |
| 678 | pcic_timer_dummy = readl(pcic0.pcic_regs+PCI_SYS_LIMIT); |
| 679 | } |
| 680 | |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 681 | /* CPU frequency is 100 MHz, timer increments every 4 CPU clocks */ |
| 682 | #define USECS_PER_JIFFY (1000000 / HZ) |
| 683 | #define TICK_TIMER_LIMIT ((100 * 1000000 / 4) / HZ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 685 | static unsigned int pcic_cycles_offset(void) |
John Stultz | 0299b13 | 2010-01-15 01:34:28 -0800 | [diff] [blame] | 686 | { |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 687 | u32 value, count; |
| 688 | |
| 689 | value = readl(pcic0.pcic_regs + PCI_SYS_COUNTER); |
| 690 | count = value & ~PCI_SYS_COUNTER_OVERFLOW; |
| 691 | |
| 692 | if (value & PCI_SYS_COUNTER_OVERFLOW) |
| 693 | count += TICK_TIMER_LIMIT; |
John Stultz | 0299b13 | 2010-01-15 01:34:28 -0800 | [diff] [blame] | 694 | /* |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 695 | * We divide all by HZ |
John Stultz | 0299b13 | 2010-01-15 01:34:28 -0800 | [diff] [blame] | 696 | * to have microsecond resolution and to avoid overflow |
| 697 | */ |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 698 | count = ((count / HZ) * USECS_PER_JIFFY) / (TICK_TIMER_LIMIT / HZ); |
John Stultz | 0299b13 | 2010-01-15 01:34:28 -0800 | [diff] [blame] | 699 | |
Sam Ravnborg | df2e7f5 | 2012-04-16 21:50:49 +0200 | [diff] [blame] | 700 | /* Coordinate with the sparc_config.clock_rate setting */ |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 701 | return count * 2; |
| 702 | } |
John Stultz | 0299b13 | 2010-01-15 01:34:28 -0800 | [diff] [blame] | 703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | void __init pci_time_init(void) |
| 705 | { |
| 706 | struct linux_pcic *pcic = &pcic0; |
| 707 | unsigned long v; |
| 708 | int timer_irq, irq; |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 709 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 711 | #ifndef CONFIG_SMP |
| 712 | /* |
Sam Ravnborg | df2e7f5 | 2012-04-16 21:50:49 +0200 | [diff] [blame] | 713 | * The clock_rate is in SBUS dimension. |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 714 | * We take into account this in pcic_cycles_offset() |
| 715 | */ |
Sam Ravnborg | df2e7f5 | 2012-04-16 21:50:49 +0200 | [diff] [blame] | 716 | sparc_config.clock_rate = SBUS_CLOCK_RATE / HZ; |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 717 | sparc_config.features |= FEAT_L10_CLOCKEVENT; |
| 718 | #endif |
| 719 | sparc_config.features |= FEAT_L10_CLOCKSOURCE; |
| 720 | sparc_config.get_cycles_offset = pcic_cycles_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
| 722 | writel (TICK_TIMER_LIMIT, pcic->pcic_regs+PCI_SYS_LIMIT); |
| 723 | /* PROM should set appropriate irq */ |
| 724 | v = readb(pcic->pcic_regs+PCI_COUNTER_IRQ); |
| 725 | timer_irq = PCI_COUNTER_IRQ_SYS(v); |
| 726 | writel (PCI_COUNTER_IRQ_SET(timer_irq, 0), |
| 727 | pcic->pcic_regs+PCI_COUNTER_IRQ); |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 728 | irq = pcic_build_device_irq(NULL, timer_irq); |
Tkhai Kirill | 62f0828 | 2012-04-04 21:49:26 +0200 | [diff] [blame] | 729 | err = request_irq(irq, timer_interrupt, |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 730 | IRQF_TIMER, "timer", NULL); |
| 731 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | prom_printf("time_init: unable to attach IRQ%d\n", timer_irq); |
| 733 | prom_halt(); |
| 734 | } |
| 735 | local_irq_enable(); |
| 736 | } |
| 737 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | |
| 739 | #if 0 |
| 740 | static void watchdog_reset() { |
| 741 | writeb(0, pcic->pcic_regs+PCI_SYS_STATUS); |
| 742 | } |
| 743 | #endif |
| 744 | |
Dominik Brodowski | 3b7a17f | 2010-01-01 17:40:50 +0100 | [diff] [blame] | 745 | resource_size_t pcibios_align_resource(void *data, const struct resource *res, |
Dominik Brodowski | b26b2d4 | 2010-01-01 17:40:49 +0100 | [diff] [blame] | 746 | resource_size_t size, resource_size_t align) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | { |
Dominik Brodowski | b26b2d4 | 2010-01-01 17:40:49 +0100 | [diff] [blame] | 748 | return res->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | } |
| 750 | |
| 751 | int pcibios_enable_device(struct pci_dev *pdev, int mask) |
| 752 | { |
| 753 | return 0; |
| 754 | } |
| 755 | |
| 756 | /* |
| 757 | * NMI |
| 758 | */ |
| 759 | void pcic_nmi(unsigned int pend, struct pt_regs *regs) |
| 760 | { |
| 761 | |
Sam Ravnborg | 01c6505 | 2014-04-26 09:57:35 +0200 | [diff] [blame] | 762 | pend = swab32(pend); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | if (!pcic_speculative || (pend & PCI_SYS_INT_PENDING_PIO) == 0) { |
| 765 | /* |
| 766 | * XXX On CP-1200 PCI #SERR may happen, we do not know |
| 767 | * what to do about it yet. |
| 768 | */ |
| 769 | printk("Aiee, NMI pend 0x%x pc 0x%x spec %d, hanging\n", |
| 770 | pend, (int)regs->pc, pcic_speculative); |
| 771 | for (;;) { } |
| 772 | } |
| 773 | pcic_speculative = 0; |
| 774 | pcic_trapped = 1; |
| 775 | regs->pc = regs->npc; |
| 776 | regs->npc += 4; |
| 777 | } |
| 778 | |
| 779 | static inline unsigned long get_irqmask(int irq_nr) |
| 780 | { |
| 781 | return 1 << irq_nr; |
| 782 | } |
| 783 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 784 | static void pcic_mask_irq(struct irq_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | { |
| 786 | unsigned long mask, flags; |
| 787 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 788 | mask = (unsigned long)data->chip_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | local_irq_save(flags); |
| 790 | writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_SET); |
| 791 | local_irq_restore(flags); |
| 792 | } |
| 793 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 794 | static void pcic_unmask_irq(struct irq_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | { |
| 796 | unsigned long mask, flags; |
| 797 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 798 | mask = (unsigned long)data->chip_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | local_irq_save(flags); |
| 800 | writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_CLEAR); |
| 801 | local_irq_restore(flags); |
| 802 | } |
| 803 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 804 | static unsigned int pcic_startup_irq(struct irq_data *data) |
| 805 | { |
| 806 | irq_link(data->irq); |
| 807 | pcic_unmask_irq(data); |
| 808 | return 0; |
| 809 | } |
| 810 | |
| 811 | static struct irq_chip pcic_irq = { |
| 812 | .name = "pcic", |
| 813 | .irq_startup = pcic_startup_irq, |
| 814 | .irq_mask = pcic_mask_irq, |
| 815 | .irq_unmask = pcic_unmask_irq, |
| 816 | }; |
| 817 | |
| 818 | unsigned int pcic_build_device_irq(struct platform_device *op, |
| 819 | unsigned int real_irq) |
| 820 | { |
| 821 | unsigned int irq; |
| 822 | unsigned long mask; |
| 823 | |
| 824 | irq = 0; |
| 825 | mask = get_irqmask(real_irq); |
| 826 | if (mask == 0) |
| 827 | goto out; |
| 828 | |
| 829 | irq = irq_alloc(real_irq, real_irq); |
| 830 | if (irq == 0) |
| 831 | goto out; |
| 832 | |
| 833 | irq_set_chip_and_handler_name(irq, &pcic_irq, |
| 834 | handle_level_irq, "PCIC"); |
| 835 | irq_set_chip_data(irq, (void *)mask); |
| 836 | |
| 837 | out: |
| 838 | return irq; |
| 839 | } |
| 840 | |
| 841 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | static void pcic_load_profile_irq(int cpu, unsigned int limit) |
| 843 | { |
| 844 | printk("PCIC: unimplemented code: FILE=%s LINE=%d", __FILE__, __LINE__); |
| 845 | } |
| 846 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | void __init sun4m_pci_init_IRQ(void) |
| 848 | { |
Sam Ravnborg | 472bc4f | 2012-04-04 13:21:13 +0200 | [diff] [blame] | 849 | sparc_config.build_device_irq = pcic_build_device_irq; |
Sam Ravnborg | 08c9388 | 2012-05-14 17:30:35 +0200 | [diff] [blame] | 850 | sparc_config.clear_clock_irq = pcic_clear_clock_irq; |
| 851 | sparc_config.load_profile_irq = pcic_load_profile_irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | } |
| 853 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | subsys_initcall(pcic_init); |