Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | ** DINO manager | |
3 | ** | |
4 | ** (c) Copyright 1999 Red Hat Software | |
5 | ** (c) Copyright 1999 SuSE GmbH | |
6 | ** (c) Copyright 1999,2000 Hewlett-Packard Company | |
7 | ** (c) Copyright 2000 Grant Grundler | |
5076c158 | 8 | ** (c) Copyright 2006 Helge Deller |
1da177e4 LT |
9 | ** |
10 | ** This program is free software; you can redistribute it and/or modify | |
11 | ** it under the terms of the GNU General Public License as published by | |
12 | ** the Free Software Foundation; either version 2 of the License, or | |
13 | ** (at your option) any later version. | |
14 | ** | |
15 | ** This module provides access to Dino PCI bus (config/IOport spaces) | |
16 | ** and helps manage Dino IRQ lines. | |
17 | ** | |
18 | ** Dino interrupt handling is a bit complicated. | |
19 | ** Dino always writes to the broadcast EIR via irr0 for now. | |
20 | ** (BIG WARNING: using broadcast EIR is a really bad thing for SMP!) | |
21 | ** Only one processor interrupt is used for the 11 IRQ line | |
22 | ** inputs to dino. | |
23 | ** | |
24 | ** The different between Built-in Dino and Card-Mode | |
25 | ** dino is in chip initialization and pci device initialization. | |
26 | ** | |
27 | ** Linux drivers can only use Card-Mode Dino if pci devices I/O port | |
28 | ** BARs are configured and used by the driver. Programming MMIO address | |
29 | ** requires substantial knowledge of available Host I/O address ranges | |
30 | ** is currently not supported. Port/Config accessor functions are the | |
31 | ** same. "BIOS" differences are handled within the existing routines. | |
32 | */ | |
33 | ||
34 | /* Changes : | |
35 | ** 2001-06-14 : Clement Moyroud (moyroudc@esiee.fr) | |
36 | ** - added support for the integrated RS232. | |
37 | */ | |
38 | ||
39 | /* | |
40 | ** TODO: create a virtual address for each Dino HPA. | |
41 | ** GSC code might be able to do this since IODC data tells us | |
42 | ** how many pages are used. PCI subsystem could (must?) do this | |
43 | ** for PCI drivers devices which implement/use MMIO registers. | |
44 | */ | |
45 | ||
1da177e4 LT |
46 | #include <linux/delay.h> |
47 | #include <linux/types.h> | |
48 | #include <linux/kernel.h> | |
49 | #include <linux/pci.h> | |
50 | #include <linux/init.h> | |
51 | #include <linux/ioport.h> | |
52 | #include <linux/slab.h> | |
53 | #include <linux/interrupt.h> /* for struct irqaction */ | |
54 | #include <linux/spinlock.h> /* for spinlock_t and prototypes */ | |
55 | ||
56 | #include <asm/pdc.h> | |
57 | #include <asm/page.h> | |
58 | #include <asm/system.h> | |
59 | #include <asm/io.h> | |
60 | #include <asm/hardware.h> | |
61 | ||
62 | #include "gsc.h" | |
63 | ||
64 | #undef DINO_DEBUG | |
65 | ||
66 | #ifdef DINO_DEBUG | |
67 | #define DBG(x...) printk(x) | |
68 | #else | |
69 | #define DBG(x...) | |
70 | #endif | |
71 | ||
72 | /* | |
73 | ** Config accessor functions only pass in the 8-bit bus number | |
74 | ** and not the 8-bit "PCI Segment" number. Each Dino will be | |
75 | ** assigned a PCI bus number based on "when" it's discovered. | |
76 | ** | |
77 | ** The "secondary" bus number is set to this before calling | |
78 | ** pci_scan_bus(). If any PPB's are present, the scan will | |
79 | ** discover them and update the "secondary" and "subordinate" | |
80 | ** fields in Dino's pci_bus structure. | |
81 | ** | |
82 | ** Changes in the configuration *will* result in a different | |
83 | ** bus number for each dino. | |
84 | */ | |
85 | ||
f45adcf9 MW |
86 | #define is_card_dino(id) ((id)->hw_type == HPHW_A_DMA) |
87 | #define is_cujo(id) ((id)->hversion == 0x682) | |
1da177e4 LT |
88 | |
89 | #define DINO_IAR0 0x004 | |
90 | #define DINO_IODC_ADDR 0x008 | |
91 | #define DINO_IODC_DATA_0 0x008 | |
92 | #define DINO_IODC_DATA_1 0x008 | |
93 | #define DINO_IRR0 0x00C | |
94 | #define DINO_IAR1 0x010 | |
95 | #define DINO_IRR1 0x014 | |
96 | #define DINO_IMR 0x018 | |
97 | #define DINO_IPR 0x01C | |
98 | #define DINO_TOC_ADDR 0x020 | |
99 | #define DINO_ICR 0x024 | |
100 | #define DINO_ILR 0x028 | |
101 | #define DINO_IO_COMMAND 0x030 | |
102 | #define DINO_IO_STATUS 0x034 | |
103 | #define DINO_IO_CONTROL 0x038 | |
104 | #define DINO_IO_GSC_ERR_RESP 0x040 | |
105 | #define DINO_IO_ERR_INFO 0x044 | |
106 | #define DINO_IO_PCI_ERR_RESP 0x048 | |
107 | #define DINO_IO_FBB_EN 0x05c | |
108 | #define DINO_IO_ADDR_EN 0x060 | |
109 | #define DINO_PCI_ADDR 0x064 | |
110 | #define DINO_CONFIG_DATA 0x068 | |
111 | #define DINO_IO_DATA 0x06c | |
112 | #define DINO_MEM_DATA 0x070 /* Dino 3.x only */ | |
113 | #define DINO_GSC2X_CONFIG 0x7b4 | |
114 | #define DINO_GMASK 0x800 | |
115 | #define DINO_PAMR 0x804 | |
116 | #define DINO_PAPR 0x808 | |
117 | #define DINO_DAMODE 0x80c | |
118 | #define DINO_PCICMD 0x810 | |
119 | #define DINO_PCISTS 0x814 | |
120 | #define DINO_MLTIM 0x81c | |
121 | #define DINO_BRDG_FEAT 0x820 | |
122 | #define DINO_PCIROR 0x824 | |
123 | #define DINO_PCIWOR 0x828 | |
124 | #define DINO_TLTIM 0x830 | |
125 | ||
126 | #define DINO_IRQS 11 /* bits 0-10 are architected */ | |
127 | #define DINO_IRR_MASK 0x5ff /* only 10 bits are implemented */ | |
4d64c9f5 | 128 | #define DINO_LOCAL_IRQS (DINO_IRQS+1) |
1da177e4 LT |
129 | |
130 | #define DINO_MASK_IRQ(x) (1<<(x)) | |
131 | ||
132 | #define PCIINTA 0x001 | |
133 | #define PCIINTB 0x002 | |
134 | #define PCIINTC 0x004 | |
135 | #define PCIINTD 0x008 | |
136 | #define PCIINTE 0x010 | |
137 | #define PCIINTF 0x020 | |
138 | #define GSCEXTINT 0x040 | |
139 | /* #define xxx 0x080 - bit 7 is "default" */ | |
140 | /* #define xxx 0x100 - bit 8 not used */ | |
141 | /* #define xxx 0x200 - bit 9 not used */ | |
142 | #define RS232INT 0x400 | |
143 | ||
144 | struct dino_device | |
145 | { | |
146 | struct pci_hba_data hba; /* 'C' inheritance - must be first */ | |
147 | spinlock_t dinosaur_pen; | |
148 | unsigned long txn_addr; /* EIR addr to generate interrupt */ | |
149 | u32 txn_data; /* EIR data assign to each dino */ | |
150 | u32 imr; /* IRQ's which are enabled */ | |
4d64c9f5 | 151 | int global_irq[DINO_LOCAL_IRQS]; /* map IMR bit to global irq */ |
1da177e4 LT |
152 | #ifdef DINO_DEBUG |
153 | unsigned int dino_irr0; /* save most recent IRQ line stat */ | |
154 | #endif | |
155 | }; | |
156 | ||
157 | /* Looks nice and keeps the compiler happy */ | |
158 | #define DINO_DEV(d) ((struct dino_device *) d) | |
159 | ||
160 | ||
161 | /* | |
162 | * Dino Configuration Space Accessor Functions | |
163 | */ | |
164 | ||
165 | #define DINO_CFG_TOK(bus,dfn,pos) ((u32) ((bus)<<16 | (dfn)<<8 | (pos))) | |
166 | ||
167 | /* | |
168 | * keep the current highest bus count to assist in allocating busses. This | |
169 | * tries to keep a global bus count total so that when we discover an | |
170 | * entirely new bus, it can be given a unique bus number. | |
171 | */ | |
172 | static int dino_current_bus = 0; | |
173 | ||
174 | static int dino_cfg_read(struct pci_bus *bus, unsigned int devfn, int where, | |
175 | int size, u32 *val) | |
176 | { | |
177 | struct dino_device *d = DINO_DEV(parisc_walk_tree(bus->bridge)); | |
178 | u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary; | |
179 | u32 v = DINO_CFG_TOK(local_bus, devfn, where & ~3); | |
180 | void __iomem *base_addr = d->hba.base_addr; | |
181 | unsigned long flags; | |
182 | ||
a8043ecb | 183 | DBG("%s: %p, %d, %d, %d\n", __func__, base_addr, devfn, where, |
92b919fe | 184 | size); |
1da177e4 LT |
185 | spin_lock_irqsave(&d->dinosaur_pen, flags); |
186 | ||
187 | /* tell HW which CFG address */ | |
188 | __raw_writel(v, base_addr + DINO_PCI_ADDR); | |
189 | ||
190 | /* generate cfg read cycle */ | |
191 | if (size == 1) { | |
192 | *val = readb(base_addr + DINO_CONFIG_DATA + (where & 3)); | |
193 | } else if (size == 2) { | |
194 | *val = readw(base_addr + DINO_CONFIG_DATA + (where & 2)); | |
195 | } else if (size == 4) { | |
196 | *val = readl(base_addr + DINO_CONFIG_DATA); | |
197 | } | |
198 | ||
199 | spin_unlock_irqrestore(&d->dinosaur_pen, flags); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | /* | |
204 | * Dino address stepping "feature": | |
205 | * When address stepping, Dino attempts to drive the bus one cycle too soon | |
206 | * even though the type of cycle (config vs. MMIO) might be different. | |
207 | * The read of Ven/Prod ID is harmless and avoids Dino's address stepping. | |
208 | */ | |
209 | static int dino_cfg_write(struct pci_bus *bus, unsigned int devfn, int where, | |
210 | int size, u32 val) | |
211 | { | |
212 | struct dino_device *d = DINO_DEV(parisc_walk_tree(bus->bridge)); | |
213 | u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary; | |
214 | u32 v = DINO_CFG_TOK(local_bus, devfn, where & ~3); | |
215 | void __iomem *base_addr = d->hba.base_addr; | |
216 | unsigned long flags; | |
217 | ||
a8043ecb | 218 | DBG("%s: %p, %d, %d, %d\n", __func__, base_addr, devfn, where, |
92b919fe | 219 | size); |
1da177e4 LT |
220 | spin_lock_irqsave(&d->dinosaur_pen, flags); |
221 | ||
222 | /* avoid address stepping feature */ | |
223 | __raw_writel(v & 0xffffff00, base_addr + DINO_PCI_ADDR); | |
224 | __raw_readl(base_addr + DINO_CONFIG_DATA); | |
225 | ||
226 | /* tell HW which CFG address */ | |
227 | __raw_writel(v, base_addr + DINO_PCI_ADDR); | |
228 | /* generate cfg read cycle */ | |
229 | if (size == 1) { | |
230 | writeb(val, base_addr + DINO_CONFIG_DATA + (where & 3)); | |
231 | } else if (size == 2) { | |
232 | writew(val, base_addr + DINO_CONFIG_DATA + (where & 2)); | |
233 | } else if (size == 4) { | |
234 | writel(val, base_addr + DINO_CONFIG_DATA); | |
235 | } | |
236 | ||
237 | spin_unlock_irqrestore(&d->dinosaur_pen, flags); | |
238 | return 0; | |
239 | } | |
240 | ||
241 | static struct pci_ops dino_cfg_ops = { | |
242 | .read = dino_cfg_read, | |
243 | .write = dino_cfg_write, | |
244 | }; | |
245 | ||
246 | ||
247 | /* | |
248 | * Dino "I/O Port" Space Accessor Functions | |
249 | * | |
250 | * Many PCI devices don't require use of I/O port space (eg Tulip, | |
251 | * NCR720) since they export the same registers to both MMIO and | |
252 | * I/O port space. Performance is going to stink if drivers use | |
253 | * I/O port instead of MMIO. | |
254 | */ | |
255 | ||
256 | #define DINO_PORT_IN(type, size, mask) \ | |
257 | static u##size dino_in##size (struct pci_hba_data *d, u16 addr) \ | |
258 | { \ | |
259 | u##size v; \ | |
260 | unsigned long flags; \ | |
261 | spin_lock_irqsave(&(DINO_DEV(d)->dinosaur_pen), flags); \ | |
262 | /* tell HW which IO Port address */ \ | |
263 | __raw_writel((u32) addr, d->base_addr + DINO_PCI_ADDR); \ | |
264 | /* generate I/O PORT read cycle */ \ | |
265 | v = read##type(d->base_addr+DINO_IO_DATA+(addr&mask)); \ | |
266 | spin_unlock_irqrestore(&(DINO_DEV(d)->dinosaur_pen), flags); \ | |
267 | return v; \ | |
268 | } | |
269 | ||
270 | DINO_PORT_IN(b, 8, 3) | |
271 | DINO_PORT_IN(w, 16, 2) | |
272 | DINO_PORT_IN(l, 32, 0) | |
273 | ||
274 | #define DINO_PORT_OUT(type, size, mask) \ | |
275 | static void dino_out##size (struct pci_hba_data *d, u16 addr, u##size val) \ | |
276 | { \ | |
277 | unsigned long flags; \ | |
278 | spin_lock_irqsave(&(DINO_DEV(d)->dinosaur_pen), flags); \ | |
279 | /* tell HW which IO port address */ \ | |
280 | __raw_writel((u32) addr, d->base_addr + DINO_PCI_ADDR); \ | |
281 | /* generate cfg write cycle */ \ | |
282 | write##type(val, d->base_addr+DINO_IO_DATA+(addr&mask)); \ | |
283 | spin_unlock_irqrestore(&(DINO_DEV(d)->dinosaur_pen), flags); \ | |
284 | } | |
285 | ||
286 | DINO_PORT_OUT(b, 8, 3) | |
287 | DINO_PORT_OUT(w, 16, 2) | |
288 | DINO_PORT_OUT(l, 32, 0) | |
289 | ||
df8e5bc6 | 290 | static struct pci_port_ops dino_port_ops = { |
1da177e4 LT |
291 | .inb = dino_in8, |
292 | .inw = dino_in16, | |
293 | .inl = dino_in32, | |
294 | .outb = dino_out8, | |
295 | .outw = dino_out16, | |
296 | .outl = dino_out32 | |
297 | }; | |
298 | ||
299 | static void dino_disable_irq(unsigned int irq) | |
300 | { | |
08678b08 YL |
301 | struct irq_desc *desc = irq_to_desc(irq); |
302 | struct dino_device *dino_dev = desc->chip_data; | |
4d64c9f5 | 303 | int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, DINO_LOCAL_IRQS); |
1da177e4 | 304 | |
a8043ecb | 305 | DBG(KERN_WARNING "%s(0x%p, %d)\n", __func__, dino_dev, irq); |
1da177e4 LT |
306 | |
307 | /* Clear the matching bit in the IMR register */ | |
308 | dino_dev->imr &= ~(DINO_MASK_IRQ(local_irq)); | |
309 | __raw_writel(dino_dev->imr, dino_dev->hba.base_addr+DINO_IMR); | |
310 | } | |
311 | ||
312 | static void dino_enable_irq(unsigned int irq) | |
313 | { | |
08678b08 YL |
314 | struct irq_desc *desc = irq_to_desc(irq); |
315 | struct dino_device *dino_dev = desc->chip_data; | |
4d64c9f5 | 316 | int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, DINO_LOCAL_IRQS); |
1da177e4 LT |
317 | u32 tmp; |
318 | ||
a8043ecb | 319 | DBG(KERN_WARNING "%s(0x%p, %d)\n", __func__, dino_dev, irq); |
1da177e4 LT |
320 | |
321 | /* | |
322 | ** clear pending IRQ bits | |
323 | ** | |
324 | ** This does NOT change ILR state! | |
325 | ** See comment below for ILR usage. | |
326 | */ | |
327 | __raw_readl(dino_dev->hba.base_addr+DINO_IPR); | |
328 | ||
329 | /* set the matching bit in the IMR register */ | |
330 | dino_dev->imr |= DINO_MASK_IRQ(local_irq); /* used in dino_isr() */ | |
331 | __raw_writel( dino_dev->imr, dino_dev->hba.base_addr+DINO_IMR); | |
332 | ||
333 | /* Emulate "Level Triggered" Interrupt | |
334 | ** Basically, a driver is blowing it if the IRQ line is asserted | |
335 | ** while the IRQ is disabled. But tulip.c seems to do that.... | |
336 | ** Give 'em a kluge award and a nice round of applause! | |
337 | ** | |
338 | ** The gsc_write will generate an interrupt which invokes dino_isr(). | |
339 | ** dino_isr() will read IPR and find nothing. But then catch this | |
340 | ** when it also checks ILR. | |
341 | */ | |
342 | tmp = __raw_readl(dino_dev->hba.base_addr+DINO_ILR); | |
343 | if (tmp & DINO_MASK_IRQ(local_irq)) { | |
344 | DBG(KERN_WARNING "%s(): IRQ asserted! (ILR 0x%x)\n", | |
a8043ecb | 345 | __func__, tmp); |
1da177e4 LT |
346 | gsc_writel(dino_dev->txn_data, dino_dev->txn_addr); |
347 | } | |
348 | } | |
349 | ||
350 | static unsigned int dino_startup_irq(unsigned int irq) | |
351 | { | |
352 | dino_enable_irq(irq); | |
353 | return 0; | |
354 | } | |
355 | ||
356 | static struct hw_interrupt_type dino_interrupt_type = { | |
357 | .typename = "GSC-PCI", | |
358 | .startup = dino_startup_irq, | |
359 | .shutdown = dino_disable_irq, | |
360 | .enable = dino_enable_irq, | |
361 | .disable = dino_disable_irq, | |
362 | .ack = no_ack_irq, | |
363 | .end = no_end_irq, | |
364 | }; | |
365 | ||
366 | ||
367 | /* | |
368 | * Handle a Processor interrupt generated by Dino. | |
369 | * | |
370 | * ilr_loop counter is a kluge to prevent a "stuck" IRQ line from | |
371 | * wedging the CPU. Could be removed or made optional at some point. | |
372 | */ | |
7d12e780 | 373 | static irqreturn_t dino_isr(int irq, void *intr_dev) |
1da177e4 LT |
374 | { |
375 | struct dino_device *dino_dev = intr_dev; | |
376 | u32 mask; | |
377 | int ilr_loop = 100; | |
378 | ||
379 | /* read and acknowledge pending interrupts */ | |
380 | #ifdef DINO_DEBUG | |
381 | dino_dev->dino_irr0 = | |
382 | #endif | |
383 | mask = __raw_readl(dino_dev->hba.base_addr+DINO_IRR0) & DINO_IRR_MASK; | |
384 | ||
385 | if (mask == 0) | |
386 | return IRQ_NONE; | |
387 | ||
388 | ilr_again: | |
389 | do { | |
390 | int local_irq = __ffs(mask); | |
391 | int irq = dino_dev->global_irq[local_irq]; | |
392 | DBG(KERN_DEBUG "%s(%d, %p) mask 0x%x\n", | |
a8043ecb | 393 | __func__, irq, intr_dev, mask); |
be577a52 | 394 | __do_IRQ(irq); |
1da177e4 LT |
395 | mask &= ~(1 << local_irq); |
396 | } while (mask); | |
397 | ||
398 | /* Support for level triggered IRQ lines. | |
399 | ** | |
400 | ** Dropping this support would make this routine *much* faster. | |
401 | ** But since PCI requires level triggered IRQ line to share lines... | |
402 | ** device drivers may assume lines are level triggered (and not | |
403 | ** edge triggered like EISA/ISA can be). | |
404 | */ | |
405 | mask = __raw_readl(dino_dev->hba.base_addr+DINO_ILR) & dino_dev->imr; | |
406 | if (mask) { | |
407 | if (--ilr_loop > 0) | |
408 | goto ilr_again; | |
409 | printk(KERN_ERR "Dino 0x%p: stuck interrupt %d\n", | |
410 | dino_dev->hba.base_addr, mask); | |
411 | return IRQ_NONE; | |
412 | } | |
413 | return IRQ_HANDLED; | |
414 | } | |
415 | ||
416 | static void dino_assign_irq(struct dino_device *dino, int local_irq, int *irqp) | |
417 | { | |
418 | int irq = gsc_assign_irq(&dino_interrupt_type, dino); | |
419 | if (irq == NO_IRQ) | |
420 | return; | |
421 | ||
422 | *irqp = irq; | |
423 | dino->global_irq[local_irq] = irq; | |
424 | } | |
425 | ||
426 | static void dino_choose_irq(struct parisc_device *dev, void *ctrl) | |
427 | { | |
428 | int irq; | |
429 | struct dino_device *dino = ctrl; | |
430 | ||
431 | switch (dev->id.sversion) { | |
432 | case 0x00084: irq = 8; break; /* PS/2 */ | |
433 | case 0x0008c: irq = 10; break; /* RS232 */ | |
434 | case 0x00096: irq = 8; break; /* PS/2 */ | |
435 | default: return; /* Unknown */ | |
436 | } | |
437 | ||
438 | dino_assign_irq(dino, irq, &dev->irq); | |
439 | } | |
440 | ||
04d35d73 HD |
441 | |
442 | /* | |
443 | * Cirrus 6832 Cardbus reports wrong irq on RDI Tadpole PARISC Laptop (deller@gmx.de) | |
444 | * (the irqs are off-by-one, not sure yet if this is a cirrus, dino-hardware or dino-driver problem...) | |
445 | */ | |
446 | static void __devinit quirk_cirrus_cardbus(struct pci_dev *dev) | |
447 | { | |
448 | u8 new_irq = dev->irq - 1; | |
449 | printk(KERN_INFO "PCI: Cirrus Cardbus IRQ fixup for %s, from %d to %d\n", | |
450 | pci_name(dev), dev->irq, new_irq); | |
451 | dev->irq = new_irq; | |
452 | } | |
453 | DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_6832, quirk_cirrus_cardbus ); | |
454 | ||
455 | ||
1da177e4 LT |
456 | static void __init |
457 | dino_bios_init(void) | |
458 | { | |
459 | DBG("dino_bios_init\n"); | |
460 | } | |
461 | ||
462 | /* | |
463 | * dino_card_setup - Set up the memory space for a Dino in card mode. | |
464 | * @bus: the bus under this dino | |
465 | * | |
466 | * Claim an 8MB chunk of unused IO space and call the generic PCI routines | |
467 | * to set up the addresses of the devices on this bus. | |
468 | */ | |
469 | #define _8MB 0x00800000UL | |
470 | static void __init | |
471 | dino_card_setup(struct pci_bus *bus, void __iomem *base_addr) | |
472 | { | |
473 | int i; | |
474 | struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge)); | |
475 | struct resource *res; | |
476 | char name[128]; | |
477 | int size; | |
478 | ||
479 | res = &dino_dev->hba.lmmio_space; | |
480 | res->flags = IORESOURCE_MEM; | |
481 | size = scnprintf(name, sizeof(name), "Dino LMMIO (%s)", | |
d4995244 | 482 | dev_name(bus->bridge)); |
1da177e4 LT |
483 | res->name = kmalloc(size+1, GFP_KERNEL); |
484 | if(res->name) | |
485 | strcpy((char *)res->name, name); | |
486 | else | |
487 | res->name = dino_dev->hba.lmmio_space.name; | |
488 | ||
489 | ||
490 | if (ccio_allocate_resource(dino_dev->hba.dev, res, _8MB, | |
491 | F_EXTEND(0xf0000000UL) | _8MB, | |
492 | F_EXTEND(0xffffffffUL) &~ _8MB, _8MB) < 0) { | |
493 | struct list_head *ln, *tmp_ln; | |
494 | ||
495 | printk(KERN_ERR "Dino: cannot attach bus %s\n", | |
d4995244 | 496 | dev_name(bus->bridge)); |
1da177e4 LT |
497 | /* kill the bus, we can't do anything with it */ |
498 | list_for_each_safe(ln, tmp_ln, &bus->devices) { | |
499 | struct pci_dev *dev = pci_dev_b(ln); | |
500 | ||
1da177e4 LT |
501 | list_del(&dev->bus_list); |
502 | } | |
503 | ||
504 | return; | |
505 | } | |
506 | bus->resource[1] = res; | |
507 | bus->resource[0] = &(dino_dev->hba.io_space); | |
508 | ||
509 | /* Now tell dino what range it has */ | |
510 | for (i = 1; i < 31; i++) { | |
511 | if (res->start == F_EXTEND(0xf0000000UL | (i * _8MB))) | |
512 | break; | |
513 | } | |
92b919fe | 514 | DBG("DINO GSC WRITE i=%d, start=%lx, dino addr = %p\n", |
1da177e4 LT |
515 | i, res->start, base_addr + DINO_IO_ADDR_EN); |
516 | __raw_writel(1 << i, base_addr + DINO_IO_ADDR_EN); | |
517 | } | |
518 | ||
519 | static void __init | |
520 | dino_card_fixup(struct pci_dev *dev) | |
521 | { | |
522 | u32 irq_pin; | |
523 | ||
524 | /* | |
525 | ** REVISIT: card-mode PCI-PCI expansion chassis do exist. | |
526 | ** Not sure they were ever productized. | |
527 | ** Die here since we'll die later in dino_inb() anyway. | |
528 | */ | |
529 | if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { | |
530 | panic("Card-Mode Dino: PCI-PCI Bridge not supported\n"); | |
531 | } | |
532 | ||
533 | /* | |
534 | ** Set Latency Timer to 0xff (not a shared bus) | |
535 | ** Set CACHELINE_SIZE. | |
536 | */ | |
537 | dino_cfg_write(dev->bus, dev->devfn, | |
538 | PCI_CACHE_LINE_SIZE, 2, 0xff00 | L1_CACHE_BYTES/4); | |
539 | ||
540 | /* | |
541 | ** Program INT_LINE for card-mode devices. | |
542 | ** The cards are hardwired according to this algorithm. | |
543 | ** And it doesn't matter if PPB's are present or not since | |
544 | ** the IRQ lines bypass the PPB. | |
545 | ** | |
546 | ** "-1" converts INTA-D (1-4) to PCIINTA-D (0-3) range. | |
547 | ** The additional "-1" adjusts for skewing the IRQ<->slot. | |
548 | */ | |
549 | dino_cfg_read(dev->bus, dev->devfn, PCI_INTERRUPT_PIN, 1, &irq_pin); | |
f0e88af8 | 550 | dev->irq = pci_swizzle_interrupt_pin(dev, irq_pin) - 1; |
1da177e4 LT |
551 | |
552 | /* Shouldn't really need to do this but it's in case someone tries | |
553 | ** to bypass PCI services and look at the card themselves. | |
554 | */ | |
555 | dino_cfg_write(dev->bus, dev->devfn, PCI_INTERRUPT_LINE, 1, dev->irq); | |
556 | } | |
557 | ||
558 | /* The alignment contraints for PCI bridges under dino */ | |
559 | #define DINO_BRIDGE_ALIGN 0x100000 | |
560 | ||
561 | ||
562 | static void __init | |
563 | dino_fixup_bus(struct pci_bus *bus) | |
564 | { | |
565 | struct list_head *ln; | |
566 | struct pci_dev *dev; | |
567 | struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge)); | |
568 | int port_base = HBA_PORT_BASE(dino_dev->hba.hba_num); | |
569 | ||
570 | DBG(KERN_WARNING "%s(0x%p) bus %d platform_data 0x%p\n", | |
a8043ecb | 571 | __func__, bus, bus->secondary, |
1da177e4 LT |
572 | bus->bridge->platform_data); |
573 | ||
574 | /* Firmware doesn't set up card-mode dino, so we have to */ | |
575 | if (is_card_dino(&dino_dev->hba.dev->id)) { | |
576 | dino_card_setup(bus, dino_dev->hba.base_addr); | |
577 | } else if(bus->parent == NULL) { | |
578 | /* must have a dino above it, reparent the resources | |
579 | * into the dino window */ | |
580 | int i; | |
581 | struct resource *res = &dino_dev->hba.lmmio_space; | |
582 | ||
583 | bus->resource[0] = &(dino_dev->hba.io_space); | |
584 | for(i = 0; i < DINO_MAX_LMMIO_RESOURCES; i++) { | |
585 | if(res[i].flags == 0) | |
586 | break; | |
587 | bus->resource[i+1] = &res[i]; | |
588 | } | |
589 | ||
9785d646 | 590 | } else if (bus->parent) { |
1da177e4 LT |
591 | int i; |
592 | ||
593 | pci_read_bridge_bases(bus); | |
594 | ||
595 | ||
596 | for(i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) { | |
597 | if((bus->self->resource[i].flags & | |
598 | (IORESOURCE_IO | IORESOURCE_MEM)) == 0) | |
599 | continue; | |
600 | ||
601 | if(bus->self->resource[i].flags & IORESOURCE_MEM) { | |
602 | /* There's a quirk to alignment of | |
603 | * bridge memory resources: the start | |
604 | * is the alignment and start-end is | |
605 | * the size. However, firmware will | |
606 | * have assigned start and end, so we | |
607 | * need to take this into account */ | |
608 | bus->self->resource[i].end = bus->self->resource[i].end - bus->self->resource[i].start + DINO_BRIDGE_ALIGN; | |
609 | bus->self->resource[i].start = DINO_BRIDGE_ALIGN; | |
610 | ||
611 | } | |
612 | ||
613 | DBG("DEBUG %s assigning %d [0x%lx,0x%lx]\n", | |
d4995244 | 614 | dev_name(&bus->self->dev), i, |
1da177e4 LT |
615 | bus->self->resource[i].start, |
616 | bus->self->resource[i].end); | |
617 | pci_assign_resource(bus->self, i); | |
618 | DBG("DEBUG %s after assign %d [0x%lx,0x%lx]\n", | |
d4995244 | 619 | dev_name(&bus->self->dev), i, |
1da177e4 LT |
620 | bus->self->resource[i].start, |
621 | bus->self->resource[i].end); | |
622 | } | |
623 | } | |
624 | ||
625 | ||
626 | list_for_each(ln, &bus->devices) { | |
627 | int i; | |
628 | ||
629 | dev = pci_dev_b(ln); | |
630 | if (is_card_dino(&dino_dev->hba.dev->id)) | |
631 | dino_card_fixup(dev); | |
632 | ||
633 | /* | |
634 | ** P2PB's only have 2 BARs, no IRQs. | |
635 | ** I'd like to just ignore them for now. | |
636 | */ | |
637 | if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) | |
638 | continue; | |
639 | ||
640 | /* Adjust the I/O Port space addresses */ | |
641 | for (i = 0; i < PCI_NUM_RESOURCES; i++) { | |
642 | struct resource *res = &dev->resource[i]; | |
643 | if (res->flags & IORESOURCE_IO) { | |
644 | res->start |= port_base; | |
645 | res->end |= port_base; | |
646 | } | |
647 | #ifdef __LP64__ | |
648 | /* Sign Extend MMIO addresses */ | |
649 | else if (res->flags & IORESOURCE_MEM) { | |
650 | res->start |= F_EXTEND(0UL); | |
651 | res->end |= F_EXTEND(0UL); | |
652 | } | |
653 | #endif | |
654 | } | |
655 | /* null out the ROM resource if there is one (we don't | |
656 | * care about an expansion rom on parisc, since it | |
657 | * usually contains (x86) bios code) */ | |
658 | dev->resource[PCI_ROM_RESOURCE].flags = 0; | |
659 | ||
660 | if(dev->irq == 255) { | |
661 | ||
662 | #define DINO_FIX_UNASSIGNED_INTERRUPTS | |
663 | #ifdef DINO_FIX_UNASSIGNED_INTERRUPTS | |
664 | ||
665 | /* This code tries to assign an unassigned | |
666 | * interrupt. Leave it disabled unless you | |
667 | * *really* know what you're doing since the | |
668 | * pin<->interrupt line mapping varies by bus | |
669 | * and machine */ | |
670 | ||
671 | u32 irq_pin; | |
672 | ||
673 | dino_cfg_read(dev->bus, dev->devfn, | |
674 | PCI_INTERRUPT_PIN, 1, &irq_pin); | |
f0e88af8 | 675 | irq_pin = pci_swizzle_interrupt_pin(dev, irq_pin) - 1; |
1da177e4 LT |
676 | printk(KERN_WARNING "Device %s has undefined IRQ, " |
677 | "setting to %d\n", pci_name(dev), irq_pin); | |
678 | dino_cfg_write(dev->bus, dev->devfn, | |
679 | PCI_INTERRUPT_LINE, 1, irq_pin); | |
680 | dino_assign_irq(dino_dev, irq_pin, &dev->irq); | |
681 | #else | |
682 | dev->irq = 65535; | |
683 | printk(KERN_WARNING "Device %s has unassigned IRQ\n", pci_name(dev)); | |
684 | #endif | |
685 | } else { | |
1da177e4 LT |
686 | /* Adjust INT_LINE for that busses region */ |
687 | dino_assign_irq(dino_dev, dev->irq, &dev->irq); | |
688 | } | |
689 | } | |
690 | } | |
691 | ||
692 | ||
df8e5bc6 | 693 | static struct pci_bios_ops dino_bios_ops = { |
1da177e4 LT |
694 | .init = dino_bios_init, |
695 | .fixup_bus = dino_fixup_bus | |
696 | }; | |
697 | ||
698 | ||
699 | /* | |
700 | * Initialise a DINO controller chip | |
701 | */ | |
702 | static void __init | |
703 | dino_card_init(struct dino_device *dino_dev) | |
704 | { | |
705 | u32 brdg_feat = 0x00784e05; | |
92b919fe MW |
706 | unsigned long status; |
707 | ||
708 | status = __raw_readl(dino_dev->hba.base_addr+DINO_IO_STATUS); | |
709 | if (status & 0x0000ff80) { | |
710 | __raw_writel(0x00000005, | |
711 | dino_dev->hba.base_addr+DINO_IO_COMMAND); | |
712 | udelay(1); | |
713 | } | |
1da177e4 LT |
714 | |
715 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_GMASK); | |
716 | __raw_writel(0x00000001, dino_dev->hba.base_addr+DINO_IO_FBB_EN); | |
717 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_ICR); | |
718 | ||
719 | #if 1 | |
720 | /* REVISIT - should be a runtime check (eg if (CPU_IS_PCX_L) ...) */ | |
721 | /* | |
722 | ** PCX-L processors don't support XQL like Dino wants it. | |
723 | ** PCX-L2 ignore XQL signal and it doesn't matter. | |
724 | */ | |
725 | brdg_feat &= ~0x4; /* UXQL */ | |
726 | #endif | |
727 | __raw_writel( brdg_feat, dino_dev->hba.base_addr+DINO_BRDG_FEAT); | |
728 | ||
729 | /* | |
730 | ** Don't enable address decoding until we know which I/O range | |
731 | ** currently is available from the host. Only affects MMIO | |
732 | ** and not I/O port space. | |
733 | */ | |
734 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_IO_ADDR_EN); | |
735 | ||
736 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_DAMODE); | |
737 | __raw_writel(0x00222222, dino_dev->hba.base_addr+DINO_PCIROR); | |
738 | __raw_writel(0x00222222, dino_dev->hba.base_addr+DINO_PCIWOR); | |
739 | ||
740 | __raw_writel(0x00000040, dino_dev->hba.base_addr+DINO_MLTIM); | |
741 | __raw_writel(0x00000080, dino_dev->hba.base_addr+DINO_IO_CONTROL); | |
742 | __raw_writel(0x0000008c, dino_dev->hba.base_addr+DINO_TLTIM); | |
743 | ||
744 | /* Disable PAMR before writing PAPR */ | |
745 | __raw_writel(0x0000007e, dino_dev->hba.base_addr+DINO_PAMR); | |
746 | __raw_writel(0x0000007f, dino_dev->hba.base_addr+DINO_PAPR); | |
747 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_PAMR); | |
748 | ||
749 | /* | |
750 | ** Dino ERS encourages enabling FBB (0x6f). | |
751 | ** We can't until we know *all* devices below us can support it. | |
752 | ** (Something in device configuration header tells us). | |
753 | */ | |
754 | __raw_writel(0x0000004f, dino_dev->hba.base_addr+DINO_PCICMD); | |
755 | ||
756 | /* Somewhere, the PCI spec says give devices 1 second | |
757 | ** to recover from the #RESET being de-asserted. | |
758 | ** Experience shows most devices only need 10ms. | |
759 | ** This short-cut speeds up booting significantly. | |
760 | */ | |
761 | mdelay(pci_post_reset_delay); | |
762 | } | |
763 | ||
764 | static int __init | |
765 | dino_bridge_init(struct dino_device *dino_dev, const char *name) | |
766 | { | |
767 | unsigned long io_addr; | |
768 | int result, i, count=0; | |
769 | struct resource *res, *prevres = NULL; | |
770 | /* | |
771 | * Decoding IO_ADDR_EN only works for Built-in Dino | |
772 | * since PDC has already initialized this. | |
773 | */ | |
774 | ||
775 | io_addr = __raw_readl(dino_dev->hba.base_addr + DINO_IO_ADDR_EN); | |
776 | if (io_addr == 0) { | |
777 | printk(KERN_WARNING "%s: No PCI devices enabled.\n", name); | |
778 | return -ENODEV; | |
779 | } | |
780 | ||
781 | res = &dino_dev->hba.lmmio_space; | |
782 | for (i = 0; i < 32; i++) { | |
783 | unsigned long start, end; | |
784 | ||
785 | if((io_addr & (1 << i)) == 0) | |
786 | continue; | |
787 | ||
5076c158 | 788 | start = F_EXTEND(0xf0000000UL) | (i << 23); |
1da177e4 LT |
789 | end = start + 8 * 1024 * 1024 - 1; |
790 | ||
791 | DBG("DINO RANGE %d is at 0x%lx-0x%lx\n", count, | |
792 | start, end); | |
793 | ||
794 | if(prevres && prevres->end + 1 == start) { | |
795 | prevres->end = end; | |
796 | } else { | |
797 | if(count >= DINO_MAX_LMMIO_RESOURCES) { | |
798 | printk(KERN_ERR "%s is out of resource windows for range %d (0x%lx-0x%lx)\n", name, count, start, end); | |
799 | break; | |
800 | } | |
801 | prevres = res; | |
802 | res->start = start; | |
803 | res->end = end; | |
804 | res->flags = IORESOURCE_MEM; | |
805 | res->name = kmalloc(64, GFP_KERNEL); | |
806 | if(res->name) | |
807 | snprintf((char *)res->name, 64, "%s LMMIO %d", | |
808 | name, count); | |
809 | res++; | |
810 | count++; | |
811 | } | |
812 | } | |
813 | ||
814 | res = &dino_dev->hba.lmmio_space; | |
815 | ||
816 | for(i = 0; i < DINO_MAX_LMMIO_RESOURCES; i++) { | |
817 | if(res[i].flags == 0) | |
818 | break; | |
819 | ||
820 | result = ccio_request_resource(dino_dev->hba.dev, &res[i]); | |
821 | if (result < 0) { | |
822 | printk(KERN_ERR "%s: failed to claim PCI Bus address space %d (0x%lx-0x%lx)!\n", name, i, res[i].start, res[i].end); | |
823 | return result; | |
824 | } | |
825 | } | |
826 | return 0; | |
827 | } | |
828 | ||
829 | static int __init dino_common_init(struct parisc_device *dev, | |
830 | struct dino_device *dino_dev, const char *name) | |
831 | { | |
832 | int status; | |
833 | u32 eim; | |
834 | struct gsc_irq gsc_irq; | |
835 | struct resource *res; | |
836 | ||
837 | pcibios_register_hba(&dino_dev->hba); | |
838 | ||
839 | pci_bios = &dino_bios_ops; /* used by pci_scan_bus() */ | |
840 | pci_port = &dino_port_ops; | |
841 | ||
842 | /* | |
843 | ** Note: SMP systems can make use of IRR1/IAR1 registers | |
844 | ** But it won't buy much performance except in very | |
845 | ** specific applications/configurations. Note Dino | |
846 | ** still only has 11 IRQ input lines - just map some of them | |
847 | ** to a different processor. | |
848 | */ | |
849 | dev->irq = gsc_alloc_irq(&gsc_irq); | |
850 | dino_dev->txn_addr = gsc_irq.txn_addr; | |
851 | dino_dev->txn_data = gsc_irq.txn_data; | |
852 | eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data; | |
853 | ||
854 | /* | |
855 | ** Dino needs a PA "IRQ" to get a processor's attention. | |
856 | ** arch/parisc/kernel/irq.c returns an EIRR bit. | |
857 | */ | |
858 | if (dev->irq < 0) { | |
859 | printk(KERN_WARNING "%s: gsc_alloc_irq() failed\n", name); | |
860 | return 1; | |
861 | } | |
862 | ||
863 | status = request_irq(dev->irq, dino_isr, 0, name, dino_dev); | |
864 | if (status) { | |
865 | printk(KERN_WARNING "%s: request_irq() failed with %d\n", | |
866 | name, status); | |
867 | return 1; | |
868 | } | |
869 | ||
870 | /* Support the serial port which is sometimes attached on built-in | |
871 | * Dino / Cujo chips. | |
872 | */ | |
873 | ||
874 | gsc_fixup_irqs(dev, dino_dev, dino_choose_irq); | |
875 | ||
876 | /* | |
877 | ** This enables DINO to generate interrupts when it sees | |
878 | ** any of its inputs *change*. Just asserting an IRQ | |
879 | ** before it's enabled (ie unmasked) isn't good enough. | |
880 | */ | |
881 | __raw_writel(eim, dino_dev->hba.base_addr+DINO_IAR0); | |
882 | ||
883 | /* | |
884 | ** Some platforms don't clear Dino's IRR0 register at boot time. | |
885 | ** Reading will clear it now. | |
886 | */ | |
887 | __raw_readl(dino_dev->hba.base_addr+DINO_IRR0); | |
888 | ||
889 | /* allocate I/O Port resource region */ | |
890 | res = &dino_dev->hba.io_space; | |
f45adcf9 | 891 | if (!is_cujo(&dev->id)) { |
1da177e4 LT |
892 | res->name = "Dino I/O Port"; |
893 | } else { | |
894 | res->name = "Cujo I/O Port"; | |
895 | } | |
896 | res->start = HBA_PORT_BASE(dino_dev->hba.hba_num); | |
897 | res->end = res->start + (HBA_PORT_SPACE_SIZE - 1); | |
898 | res->flags = IORESOURCE_IO; /* do not mark it busy ! */ | |
899 | if (request_resource(&ioport_resource, res) < 0) { | |
900 | printk(KERN_ERR "%s: request I/O Port region failed " | |
901 | "0x%lx/%lx (hpa 0x%p)\n", | |
902 | name, res->start, res->end, dino_dev->hba.base_addr); | |
903 | return 1; | |
904 | } | |
905 | ||
906 | return 0; | |
907 | } | |
908 | ||
909 | #define CUJO_RAVEN_ADDR F_EXTEND(0xf1000000UL) | |
910 | #define CUJO_FIREHAWK_ADDR F_EXTEND(0xf1604000UL) | |
911 | #define CUJO_RAVEN_BADPAGE 0x01003000UL | |
912 | #define CUJO_FIREHAWK_BADPAGE 0x01607000UL | |
913 | ||
914 | static const char *dino_vers[] = { | |
915 | "2.0", | |
916 | "2.1", | |
917 | "3.0", | |
918 | "3.1" | |
919 | }; | |
920 | ||
921 | static const char *cujo_vers[] = { | |
922 | "1.0", | |
923 | "2.0" | |
924 | }; | |
925 | ||
926 | void ccio_cujo20_fixup(struct parisc_device *dev, u32 iovp); | |
927 | ||
928 | /* | |
929 | ** Determine if dino should claim this chip (return 0) or not (return 1). | |
930 | ** If so, initialize the chip appropriately (card-mode vs bridge mode). | |
931 | ** Much of the initialization is common though. | |
932 | */ | |
53f01bba | 933 | static int __init dino_probe(struct parisc_device *dev) |
1da177e4 LT |
934 | { |
935 | struct dino_device *dino_dev; // Dino specific control struct | |
936 | const char *version = "unknown"; | |
937 | char *name; | |
938 | int is_cujo = 0; | |
939 | struct pci_bus *bus; | |
53f01bba MW |
940 | unsigned long hpa = dev->hpa.start; |
941 | ||
1da177e4 LT |
942 | name = "Dino"; |
943 | if (is_card_dino(&dev->id)) { | |
944 | version = "3.x (card mode)"; | |
945 | } else { | |
f45adcf9 | 946 | if (!is_cujo(&dev->id)) { |
1da177e4 LT |
947 | if (dev->id.hversion_rev < 4) { |
948 | version = dino_vers[dev->id.hversion_rev]; | |
949 | } | |
950 | } else { | |
951 | name = "Cujo"; | |
952 | is_cujo = 1; | |
953 | if (dev->id.hversion_rev < 2) { | |
954 | version = cujo_vers[dev->id.hversion_rev]; | |
955 | } | |
956 | } | |
957 | } | |
958 | ||
92b919fe | 959 | printk("%s version %s found at 0x%lx\n", name, version, hpa); |
1da177e4 | 960 | |
92b919fe | 961 | if (!request_mem_region(hpa, PAGE_SIZE, name)) { |
1da177e4 | 962 | printk(KERN_ERR "DINO: Hey! Someone took my MMIO space (0x%ld)!\n", |
92b919fe | 963 | hpa); |
1da177e4 LT |
964 | return 1; |
965 | } | |
966 | ||
967 | /* Check for bugs */ | |
968 | if (is_cujo && dev->id.hversion_rev == 1) { | |
969 | #ifdef CONFIG_IOMMU_CCIO | |
970 | printk(KERN_WARNING "Enabling Cujo 2.0 bug workaround\n"); | |
92b919fe | 971 | if (hpa == (unsigned long)CUJO_RAVEN_ADDR) { |
1da177e4 | 972 | ccio_cujo20_fixup(dev, CUJO_RAVEN_BADPAGE); |
92b919fe | 973 | } else if (hpa == (unsigned long)CUJO_FIREHAWK_ADDR) { |
1da177e4 LT |
974 | ccio_cujo20_fixup(dev, CUJO_FIREHAWK_BADPAGE); |
975 | } else { | |
92b919fe | 976 | printk("Don't recognise Cujo at address 0x%lx, not enabling workaround\n", hpa); |
1da177e4 LT |
977 | } |
978 | #endif | |
979 | } else if (!is_cujo && !is_card_dino(&dev->id) && | |
980 | dev->id.hversion_rev < 3) { | |
981 | printk(KERN_WARNING | |
982 | "The GSCtoPCI (Dino hrev %d) bus converter found may exhibit\n" | |
983 | "data corruption. See Service Note Numbers: A4190A-01, A4191A-01.\n" | |
984 | "Systems shipped after Aug 20, 1997 will not exhibit this problem.\n" | |
985 | "Models affected: C180, C160, C160L, B160L, and B132L workstations.\n\n", | |
986 | dev->id.hversion_rev); | |
987 | /* REVISIT: why are C200/C240 listed in the README table but not | |
988 | ** "Models affected"? Could be an omission in the original literature. | |
989 | */ | |
990 | } | |
991 | ||
cb6fc18e | 992 | dino_dev = kzalloc(sizeof(struct dino_device), GFP_KERNEL); |
1da177e4 LT |
993 | if (!dino_dev) { |
994 | printk("dino_init_chip - couldn't alloc dino_device\n"); | |
995 | return 1; | |
996 | } | |
997 | ||
1da177e4 | 998 | dino_dev->hba.dev = dev; |
5076c158 | 999 | dino_dev->hba.base_addr = ioremap_nocache(hpa, 4096); |
1da177e4 LT |
1000 | dino_dev->hba.lmmio_space_offset = 0; /* CPU addrs == bus addrs */ |
1001 | spin_lock_init(&dino_dev->dinosaur_pen); | |
1002 | dino_dev->hba.iommu = ccio_get_iommu(dev); | |
1003 | ||
1004 | if (is_card_dino(&dev->id)) { | |
1005 | dino_card_init(dino_dev); | |
1006 | } else { | |
1007 | dino_bridge_init(dino_dev, name); | |
1008 | } | |
1009 | ||
1010 | if (dino_common_init(dev, dino_dev, name)) | |
1011 | return 1; | |
1012 | ||
1013 | dev->dev.platform_data = dino_dev; | |
1014 | ||
1015 | /* | |
1016 | ** It's not used to avoid chicken/egg problems | |
1017 | ** with configuration accessor functions. | |
1018 | */ | |
1019 | bus = pci_scan_bus_parented(&dev->dev, dino_current_bus, | |
1020 | &dino_cfg_ops, NULL); | |
1021 | if(bus) { | |
c431ada4 | 1022 | pci_bus_add_devices(bus); |
1da177e4 LT |
1023 | /* This code *depends* on scanning being single threaded |
1024 | * if it isn't, this global bus number count will fail | |
1025 | */ | |
1026 | dino_current_bus = bus->subordinate + 1; | |
1027 | pci_bus_assign_resources(bus); | |
1028 | } else { | |
d4995244 KS |
1029 | printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (probably duplicate bus number %d)\n", |
1030 | dev_name(&dev->dev), dino_current_bus); | |
1da177e4 LT |
1031 | /* increment the bus number in case of duplicates */ |
1032 | dino_current_bus++; | |
1033 | } | |
1034 | dino_dev->hba.hba_bus = bus; | |
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | /* | |
1039 | * Normally, we would just test sversion. But the Elroy PCI adapter has | |
1040 | * the same sversion as Dino, so we have to check hversion as well. | |
1041 | * Unfortunately, the J2240 PDC reports the wrong hversion for the first | |
1042 | * Dino, so we have to test for Dino, Cujo and Dino-in-a-J2240. | |
1043 | * For card-mode Dino, most machines report an sversion of 9D. But 715 | |
1044 | * and 725 firmware misreport it as 0x08080 for no adequately explained | |
1045 | * reason. | |
1046 | */ | |
1047 | static struct parisc_device_id dino_tbl[] = { | |
1048 | { HPHW_A_DMA, HVERSION_REV_ANY_ID, 0x004, 0x0009D },/* Card-mode Dino */ | |
1049 | { HPHW_A_DMA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x08080 }, /* XXX */ | |
1050 | { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x680, 0xa }, /* Bridge-mode Dino */ | |
1051 | { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x682, 0xa }, /* Bridge-mode Cujo */ | |
1052 | { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x05d, 0xa }, /* Dino in a J2240 */ | |
1053 | { 0, } | |
1054 | }; | |
1055 | ||
1056 | static struct parisc_driver dino_driver = { | |
bdad1f83 | 1057 | .name = "dino", |
1da177e4 | 1058 | .id_table = dino_tbl, |
bdad1f83 | 1059 | .probe = dino_probe, |
1da177e4 LT |
1060 | }; |
1061 | ||
1062 | /* | |
1063 | * One time initialization to let the world know Dino is here. | |
1064 | * This is the only routine which is NOT static. | |
1065 | * Must be called exactly once before pci_init(). | |
1066 | */ | |
1067 | int __init dino_init(void) | |
1068 | { | |
1069 | register_parisc_driver(&dino_driver); | |
1070 | return 0; | |
1071 | } | |
1072 |