Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | ** DINO manager | |
4 | ** | |
5 | ** (c) Copyright 1999 Red Hat Software | |
6 | ** (c) Copyright 1999 SuSE GmbH | |
7 | ** (c) Copyright 1999,2000 Hewlett-Packard Company | |
8 | ** (c) Copyright 2000 Grant Grundler | |
544f4485 | 9 | ** (c) Copyright 2006-2019 Helge Deller |
1da177e4 | 10 | ** |
1da177e4 LT |
11 | ** |
12 | ** This module provides access to Dino PCI bus (config/IOport spaces) | |
13 | ** and helps manage Dino IRQ lines. | |
14 | ** | |
15 | ** Dino interrupt handling is a bit complicated. | |
16 | ** Dino always writes to the broadcast EIR via irr0 for now. | |
17 | ** (BIG WARNING: using broadcast EIR is a really bad thing for SMP!) | |
18 | ** Only one processor interrupt is used for the 11 IRQ line | |
19 | ** inputs to dino. | |
20 | ** | |
21 | ** The different between Built-in Dino and Card-Mode | |
22 | ** dino is in chip initialization and pci device initialization. | |
23 | ** | |
24 | ** Linux drivers can only use Card-Mode Dino if pci devices I/O port | |
25 | ** BARs are configured and used by the driver. Programming MMIO address | |
26 | ** requires substantial knowledge of available Host I/O address ranges | |
27 | ** is currently not supported. Port/Config accessor functions are the | |
28 | ** same. "BIOS" differences are handled within the existing routines. | |
29 | */ | |
30 | ||
31 | /* Changes : | |
32 | ** 2001-06-14 : Clement Moyroud (moyroudc@esiee.fr) | |
33 | ** - added support for the integrated RS232. | |
34 | */ | |
35 | ||
36 | /* | |
37 | ** TODO: create a virtual address for each Dino HPA. | |
38 | ** GSC code might be able to do this since IODC data tells us | |
39 | ** how many pages are used. PCI subsystem could (must?) do this | |
40 | ** for PCI drivers devices which implement/use MMIO registers. | |
41 | */ | |
42 | ||
1da177e4 LT |
43 | #include <linux/delay.h> |
44 | #include <linux/types.h> | |
45 | #include <linux/kernel.h> | |
46 | #include <linux/pci.h> | |
47 | #include <linux/init.h> | |
48 | #include <linux/ioport.h> | |
49 | #include <linux/slab.h> | |
50 | #include <linux/interrupt.h> /* for struct irqaction */ | |
51 | #include <linux/spinlock.h> /* for spinlock_t and prototypes */ | |
52 | ||
53 | #include <asm/pdc.h> | |
54 | #include <asm/page.h> | |
1da177e4 LT |
55 | #include <asm/io.h> |
56 | #include <asm/hardware.h> | |
57 | ||
58 | #include "gsc.h" | |
9b8eeab0 | 59 | #include "iommu.h" |
1da177e4 LT |
60 | |
61 | #undef DINO_DEBUG | |
62 | ||
63 | #ifdef DINO_DEBUG | |
64 | #define DBG(x...) printk(x) | |
65 | #else | |
66 | #define DBG(x...) | |
67 | #endif | |
68 | ||
69 | /* | |
70 | ** Config accessor functions only pass in the 8-bit bus number | |
71 | ** and not the 8-bit "PCI Segment" number. Each Dino will be | |
72 | ** assigned a PCI bus number based on "when" it's discovered. | |
73 | ** | |
74 | ** The "secondary" bus number is set to this before calling | |
75 | ** pci_scan_bus(). If any PPB's are present, the scan will | |
76 | ** discover them and update the "secondary" and "subordinate" | |
77 | ** fields in Dino's pci_bus structure. | |
78 | ** | |
79 | ** Changes in the configuration *will* result in a different | |
80 | ** bus number for each dino. | |
81 | */ | |
82 | ||
f45adcf9 MW |
83 | #define is_card_dino(id) ((id)->hw_type == HPHW_A_DMA) |
84 | #define is_cujo(id) ((id)->hversion == 0x682) | |
1da177e4 LT |
85 | |
86 | #define DINO_IAR0 0x004 | |
87 | #define DINO_IODC_ADDR 0x008 | |
88 | #define DINO_IODC_DATA_0 0x008 | |
89 | #define DINO_IODC_DATA_1 0x008 | |
90 | #define DINO_IRR0 0x00C | |
91 | #define DINO_IAR1 0x010 | |
92 | #define DINO_IRR1 0x014 | |
93 | #define DINO_IMR 0x018 | |
94 | #define DINO_IPR 0x01C | |
95 | #define DINO_TOC_ADDR 0x020 | |
96 | #define DINO_ICR 0x024 | |
97 | #define DINO_ILR 0x028 | |
98 | #define DINO_IO_COMMAND 0x030 | |
99 | #define DINO_IO_STATUS 0x034 | |
100 | #define DINO_IO_CONTROL 0x038 | |
101 | #define DINO_IO_GSC_ERR_RESP 0x040 | |
102 | #define DINO_IO_ERR_INFO 0x044 | |
103 | #define DINO_IO_PCI_ERR_RESP 0x048 | |
104 | #define DINO_IO_FBB_EN 0x05c | |
105 | #define DINO_IO_ADDR_EN 0x060 | |
106 | #define DINO_PCI_ADDR 0x064 | |
107 | #define DINO_CONFIG_DATA 0x068 | |
108 | #define DINO_IO_DATA 0x06c | |
109 | #define DINO_MEM_DATA 0x070 /* Dino 3.x only */ | |
110 | #define DINO_GSC2X_CONFIG 0x7b4 | |
111 | #define DINO_GMASK 0x800 | |
112 | #define DINO_PAMR 0x804 | |
113 | #define DINO_PAPR 0x808 | |
114 | #define DINO_DAMODE 0x80c | |
115 | #define DINO_PCICMD 0x810 | |
116 | #define DINO_PCISTS 0x814 | |
117 | #define DINO_MLTIM 0x81c | |
118 | #define DINO_BRDG_FEAT 0x820 | |
119 | #define DINO_PCIROR 0x824 | |
120 | #define DINO_PCIWOR 0x828 | |
121 | #define DINO_TLTIM 0x830 | |
122 | ||
123 | #define DINO_IRQS 11 /* bits 0-10 are architected */ | |
124 | #define DINO_IRR_MASK 0x5ff /* only 10 bits are implemented */ | |
4d64c9f5 | 125 | #define DINO_LOCAL_IRQS (DINO_IRQS+1) |
1da177e4 LT |
126 | |
127 | #define DINO_MASK_IRQ(x) (1<<(x)) | |
128 | ||
129 | #define PCIINTA 0x001 | |
130 | #define PCIINTB 0x002 | |
131 | #define PCIINTC 0x004 | |
132 | #define PCIINTD 0x008 | |
133 | #define PCIINTE 0x010 | |
134 | #define PCIINTF 0x020 | |
135 | #define GSCEXTINT 0x040 | |
136 | /* #define xxx 0x080 - bit 7 is "default" */ | |
137 | /* #define xxx 0x100 - bit 8 not used */ | |
138 | /* #define xxx 0x200 - bit 9 not used */ | |
139 | #define RS232INT 0x400 | |
140 | ||
141 | struct dino_device | |
142 | { | |
143 | struct pci_hba_data hba; /* 'C' inheritance - must be first */ | |
144 | spinlock_t dinosaur_pen; | |
1da177e4 | 145 | u32 imr; /* IRQ's which are enabled */ |
939fc856 | 146 | struct gsc_irq gsc_irq; |
4d64c9f5 | 147 | int global_irq[DINO_LOCAL_IRQS]; /* map IMR bit to global irq */ |
1da177e4 LT |
148 | #ifdef DINO_DEBUG |
149 | unsigned int dino_irr0; /* save most recent IRQ line stat */ | |
150 | #endif | |
151 | }; | |
152 | ||
e2fcabe0 CH |
153 | static inline struct dino_device *DINO_DEV(struct pci_hba_data *hba) |
154 | { | |
155 | return container_of(hba, struct dino_device, hba); | |
156 | } | |
1da177e4 LT |
157 | |
158 | /* | |
159 | * Dino Configuration Space Accessor Functions | |
160 | */ | |
161 | ||
162 | #define DINO_CFG_TOK(bus,dfn,pos) ((u32) ((bus)<<16 | (dfn)<<8 | (pos))) | |
163 | ||
164 | /* | |
165 | * keep the current highest bus count to assist in allocating busses. This | |
166 | * tries to keep a global bus count total so that when we discover an | |
167 | * entirely new bus, it can be given a unique bus number. | |
168 | */ | |
169 | static int dino_current_bus = 0; | |
170 | ||
171 | static int dino_cfg_read(struct pci_bus *bus, unsigned int devfn, int where, | |
172 | int size, u32 *val) | |
173 | { | |
174 | struct dino_device *d = DINO_DEV(parisc_walk_tree(bus->bridge)); | |
b918c62e | 175 | u32 local_bus = (bus->parent == NULL) ? 0 : bus->busn_res.start; |
1da177e4 LT |
176 | u32 v = DINO_CFG_TOK(local_bus, devfn, where & ~3); |
177 | void __iomem *base_addr = d->hba.base_addr; | |
178 | unsigned long flags; | |
179 | ||
a8043ecb | 180 | DBG("%s: %p, %d, %d, %d\n", __func__, base_addr, devfn, where, |
92b919fe | 181 | size); |
1da177e4 LT |
182 | spin_lock_irqsave(&d->dinosaur_pen, flags); |
183 | ||
184 | /* tell HW which CFG address */ | |
185 | __raw_writel(v, base_addr + DINO_PCI_ADDR); | |
186 | ||
187 | /* generate cfg read cycle */ | |
188 | if (size == 1) { | |
189 | *val = readb(base_addr + DINO_CONFIG_DATA + (where & 3)); | |
190 | } else if (size == 2) { | |
191 | *val = readw(base_addr + DINO_CONFIG_DATA + (where & 2)); | |
192 | } else if (size == 4) { | |
193 | *val = readl(base_addr + DINO_CONFIG_DATA); | |
194 | } | |
195 | ||
196 | spin_unlock_irqrestore(&d->dinosaur_pen, flags); | |
197 | return 0; | |
198 | } | |
199 | ||
200 | /* | |
201 | * Dino address stepping "feature": | |
202 | * When address stepping, Dino attempts to drive the bus one cycle too soon | |
203 | * even though the type of cycle (config vs. MMIO) might be different. | |
204 | * The read of Ven/Prod ID is harmless and avoids Dino's address stepping. | |
205 | */ | |
206 | static int dino_cfg_write(struct pci_bus *bus, unsigned int devfn, int where, | |
207 | int size, u32 val) | |
208 | { | |
209 | struct dino_device *d = DINO_DEV(parisc_walk_tree(bus->bridge)); | |
b918c62e | 210 | u32 local_bus = (bus->parent == NULL) ? 0 : bus->busn_res.start; |
1da177e4 LT |
211 | u32 v = DINO_CFG_TOK(local_bus, devfn, where & ~3); |
212 | void __iomem *base_addr = d->hba.base_addr; | |
213 | unsigned long flags; | |
214 | ||
a8043ecb | 215 | DBG("%s: %p, %d, %d, %d\n", __func__, base_addr, devfn, where, |
92b919fe | 216 | size); |
1da177e4 LT |
217 | spin_lock_irqsave(&d->dinosaur_pen, flags); |
218 | ||
219 | /* avoid address stepping feature */ | |
220 | __raw_writel(v & 0xffffff00, base_addr + DINO_PCI_ADDR); | |
221 | __raw_readl(base_addr + DINO_CONFIG_DATA); | |
222 | ||
223 | /* tell HW which CFG address */ | |
224 | __raw_writel(v, base_addr + DINO_PCI_ADDR); | |
225 | /* generate cfg read cycle */ | |
226 | if (size == 1) { | |
227 | writeb(val, base_addr + DINO_CONFIG_DATA + (where & 3)); | |
228 | } else if (size == 2) { | |
229 | writew(val, base_addr + DINO_CONFIG_DATA + (where & 2)); | |
230 | } else if (size == 4) { | |
231 | writel(val, base_addr + DINO_CONFIG_DATA); | |
232 | } | |
233 | ||
234 | spin_unlock_irqrestore(&d->dinosaur_pen, flags); | |
235 | return 0; | |
236 | } | |
237 | ||
238 | static struct pci_ops dino_cfg_ops = { | |
239 | .read = dino_cfg_read, | |
240 | .write = dino_cfg_write, | |
241 | }; | |
242 | ||
243 | ||
244 | /* | |
245 | * Dino "I/O Port" Space Accessor Functions | |
246 | * | |
247 | * Many PCI devices don't require use of I/O port space (eg Tulip, | |
248 | * NCR720) since they export the same registers to both MMIO and | |
249 | * I/O port space. Performance is going to stink if drivers use | |
250 | * I/O port instead of MMIO. | |
251 | */ | |
252 | ||
253 | #define DINO_PORT_IN(type, size, mask) \ | |
254 | static u##size dino_in##size (struct pci_hba_data *d, u16 addr) \ | |
255 | { \ | |
256 | u##size v; \ | |
257 | unsigned long flags; \ | |
258 | spin_lock_irqsave(&(DINO_DEV(d)->dinosaur_pen), flags); \ | |
259 | /* tell HW which IO Port address */ \ | |
260 | __raw_writel((u32) addr, d->base_addr + DINO_PCI_ADDR); \ | |
261 | /* generate I/O PORT read cycle */ \ | |
262 | v = read##type(d->base_addr+DINO_IO_DATA+(addr&mask)); \ | |
263 | spin_unlock_irqrestore(&(DINO_DEV(d)->dinosaur_pen), flags); \ | |
264 | return v; \ | |
265 | } | |
266 | ||
267 | DINO_PORT_IN(b, 8, 3) | |
268 | DINO_PORT_IN(w, 16, 2) | |
269 | DINO_PORT_IN(l, 32, 0) | |
270 | ||
271 | #define DINO_PORT_OUT(type, size, mask) \ | |
272 | static void dino_out##size (struct pci_hba_data *d, u16 addr, u##size val) \ | |
273 | { \ | |
274 | unsigned long flags; \ | |
275 | spin_lock_irqsave(&(DINO_DEV(d)->dinosaur_pen), flags); \ | |
276 | /* tell HW which IO port address */ \ | |
277 | __raw_writel((u32) addr, d->base_addr + DINO_PCI_ADDR); \ | |
278 | /* generate cfg write cycle */ \ | |
279 | write##type(val, d->base_addr+DINO_IO_DATA+(addr&mask)); \ | |
280 | spin_unlock_irqrestore(&(DINO_DEV(d)->dinosaur_pen), flags); \ | |
281 | } | |
282 | ||
283 | DINO_PORT_OUT(b, 8, 3) | |
284 | DINO_PORT_OUT(w, 16, 2) | |
285 | DINO_PORT_OUT(l, 32, 0) | |
286 | ||
df8e5bc6 | 287 | static struct pci_port_ops dino_port_ops = { |
1da177e4 LT |
288 | .inb = dino_in8, |
289 | .inw = dino_in16, | |
290 | .inl = dino_in32, | |
291 | .outb = dino_out8, | |
292 | .outw = dino_out16, | |
293 | .outl = dino_out32 | |
294 | }; | |
295 | ||
4c4231ea | 296 | static void dino_mask_irq(struct irq_data *d) |
1da177e4 | 297 | { |
4c4231ea TG |
298 | struct dino_device *dino_dev = irq_data_get_irq_chip_data(d); |
299 | int local_irq = gsc_find_local_irq(d->irq, dino_dev->global_irq, DINO_LOCAL_IRQS); | |
1da177e4 | 300 | |
04903c06 | 301 | DBG(KERN_WARNING "%s(0x%px, %d)\n", __func__, dino_dev, d->irq); |
1da177e4 LT |
302 | |
303 | /* Clear the matching bit in the IMR register */ | |
304 | dino_dev->imr &= ~(DINO_MASK_IRQ(local_irq)); | |
305 | __raw_writel(dino_dev->imr, dino_dev->hba.base_addr+DINO_IMR); | |
306 | } | |
307 | ||
4c4231ea | 308 | static void dino_unmask_irq(struct irq_data *d) |
1da177e4 | 309 | { |
4c4231ea TG |
310 | struct dino_device *dino_dev = irq_data_get_irq_chip_data(d); |
311 | int local_irq = gsc_find_local_irq(d->irq, dino_dev->global_irq, DINO_LOCAL_IRQS); | |
1da177e4 LT |
312 | u32 tmp; |
313 | ||
04903c06 | 314 | DBG(KERN_WARNING "%s(0x%px, %d)\n", __func__, dino_dev, d->irq); |
1da177e4 LT |
315 | |
316 | /* | |
317 | ** clear pending IRQ bits | |
318 | ** | |
319 | ** This does NOT change ILR state! | |
320 | ** See comment below for ILR usage. | |
321 | */ | |
322 | __raw_readl(dino_dev->hba.base_addr+DINO_IPR); | |
323 | ||
324 | /* set the matching bit in the IMR register */ | |
325 | dino_dev->imr |= DINO_MASK_IRQ(local_irq); /* used in dino_isr() */ | |
326 | __raw_writel( dino_dev->imr, dino_dev->hba.base_addr+DINO_IMR); | |
327 | ||
328 | /* Emulate "Level Triggered" Interrupt | |
329 | ** Basically, a driver is blowing it if the IRQ line is asserted | |
330 | ** while the IRQ is disabled. But tulip.c seems to do that.... | |
331 | ** Give 'em a kluge award and a nice round of applause! | |
332 | ** | |
333 | ** The gsc_write will generate an interrupt which invokes dino_isr(). | |
334 | ** dino_isr() will read IPR and find nothing. But then catch this | |
335 | ** when it also checks ILR. | |
336 | */ | |
337 | tmp = __raw_readl(dino_dev->hba.base_addr+DINO_ILR); | |
338 | if (tmp & DINO_MASK_IRQ(local_irq)) { | |
339 | DBG(KERN_WARNING "%s(): IRQ asserted! (ILR 0x%x)\n", | |
a8043ecb | 340 | __func__, tmp); |
939fc856 | 341 | gsc_writel(dino_dev->gsc_irq.txn_data, dino_dev->gsc_irq.txn_addr); |
1da177e4 LT |
342 | } |
343 | } | |
344 | ||
939fc856 HD |
345 | #ifdef CONFIG_SMP |
346 | static int dino_set_affinity_irq(struct irq_data *d, const struct cpumask *dest, | |
347 | bool force) | |
348 | { | |
349 | struct dino_device *dino_dev = irq_data_get_irq_chip_data(d); | |
350 | struct cpumask tmask; | |
351 | int cpu_irq; | |
352 | u32 eim; | |
353 | ||
354 | if (!cpumask_and(&tmask, dest, cpu_online_mask)) | |
355 | return -EINVAL; | |
356 | ||
357 | cpu_irq = cpu_check_affinity(d, &tmask); | |
358 | if (cpu_irq < 0) | |
359 | return cpu_irq; | |
360 | ||
361 | dino_dev->gsc_irq.txn_addr = txn_affinity_addr(d->irq, cpu_irq); | |
362 | eim = ((u32) dino_dev->gsc_irq.txn_addr) | dino_dev->gsc_irq.txn_data; | |
363 | __raw_writel(eim, dino_dev->hba.base_addr+DINO_IAR0); | |
364 | ||
365 | irq_data_update_effective_affinity(d, &tmask); | |
366 | ||
367 | return IRQ_SET_MASK_OK; | |
368 | } | |
369 | #endif | |
370 | ||
dfe07565 | 371 | static struct irq_chip dino_interrupt_type = { |
4c4231ea TG |
372 | .name = "GSC-PCI", |
373 | .irq_unmask = dino_unmask_irq, | |
374 | .irq_mask = dino_mask_irq, | |
939fc856 HD |
375 | #ifdef CONFIG_SMP |
376 | .irq_set_affinity = dino_set_affinity_irq, | |
377 | #endif | |
1da177e4 LT |
378 | }; |
379 | ||
380 | ||
381 | /* | |
382 | * Handle a Processor interrupt generated by Dino. | |
383 | * | |
384 | * ilr_loop counter is a kluge to prevent a "stuck" IRQ line from | |
385 | * wedging the CPU. Could be removed or made optional at some point. | |
386 | */ | |
7d12e780 | 387 | static irqreturn_t dino_isr(int irq, void *intr_dev) |
1da177e4 LT |
388 | { |
389 | struct dino_device *dino_dev = intr_dev; | |
390 | u32 mask; | |
391 | int ilr_loop = 100; | |
392 | ||
393 | /* read and acknowledge pending interrupts */ | |
394 | #ifdef DINO_DEBUG | |
395 | dino_dev->dino_irr0 = | |
396 | #endif | |
397 | mask = __raw_readl(dino_dev->hba.base_addr+DINO_IRR0) & DINO_IRR_MASK; | |
398 | ||
399 | if (mask == 0) | |
400 | return IRQ_NONE; | |
401 | ||
402 | ilr_again: | |
403 | do { | |
404 | int local_irq = __ffs(mask); | |
405 | int irq = dino_dev->global_irq[local_irq]; | |
406 | DBG(KERN_DEBUG "%s(%d, %p) mask 0x%x\n", | |
a8043ecb | 407 | __func__, irq, intr_dev, mask); |
ba20085c | 408 | generic_handle_irq(irq); |
35d8be9c | 409 | mask &= ~DINO_MASK_IRQ(local_irq); |
1da177e4 LT |
410 | } while (mask); |
411 | ||
412 | /* Support for level triggered IRQ lines. | |
413 | ** | |
414 | ** Dropping this support would make this routine *much* faster. | |
415 | ** But since PCI requires level triggered IRQ line to share lines... | |
416 | ** device drivers may assume lines are level triggered (and not | |
417 | ** edge triggered like EISA/ISA can be). | |
418 | */ | |
419 | mask = __raw_readl(dino_dev->hba.base_addr+DINO_ILR) & dino_dev->imr; | |
420 | if (mask) { | |
421 | if (--ilr_loop > 0) | |
422 | goto ilr_again; | |
2e37787d | 423 | pr_warn_ratelimited("Dino 0x%px: stuck interrupt %d\n", |
1da177e4 | 424 | dino_dev->hba.base_addr, mask); |
1da177e4 LT |
425 | } |
426 | return IRQ_HANDLED; | |
427 | } | |
428 | ||
429 | static void dino_assign_irq(struct dino_device *dino, int local_irq, int *irqp) | |
430 | { | |
431 | int irq = gsc_assign_irq(&dino_interrupt_type, dino); | |
432 | if (irq == NO_IRQ) | |
433 | return; | |
434 | ||
435 | *irqp = irq; | |
436 | dino->global_irq[local_irq] = irq; | |
437 | } | |
438 | ||
439 | static void dino_choose_irq(struct parisc_device *dev, void *ctrl) | |
440 | { | |
441 | int irq; | |
442 | struct dino_device *dino = ctrl; | |
443 | ||
444 | switch (dev->id.sversion) { | |
445 | case 0x00084: irq = 8; break; /* PS/2 */ | |
446 | case 0x0008c: irq = 10; break; /* RS232 */ | |
447 | case 0x00096: irq = 8; break; /* PS/2 */ | |
448 | default: return; /* Unknown */ | |
449 | } | |
450 | ||
451 | dino_assign_irq(dino, irq, &dev->irq); | |
452 | } | |
453 | ||
04d35d73 HD |
454 | |
455 | /* | |
456 | * Cirrus 6832 Cardbus reports wrong irq on RDI Tadpole PARISC Laptop (deller@gmx.de) | |
457 | * (the irqs are off-by-one, not sure yet if this is a cirrus, dino-hardware or dino-driver problem...) | |
458 | */ | |
0fe763c5 | 459 | static void quirk_cirrus_cardbus(struct pci_dev *dev) |
04d35d73 HD |
460 | { |
461 | u8 new_irq = dev->irq - 1; | |
462 | printk(KERN_INFO "PCI: Cirrus Cardbus IRQ fixup for %s, from %d to %d\n", | |
463 | pci_name(dev), dev->irq, new_irq); | |
464 | dev->irq = new_irq; | |
465 | } | |
466 | DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_6832, quirk_cirrus_cardbus ); | |
467 | ||
5fa16591 | 468 | #ifdef CONFIG_TULIP |
907872ba GR |
469 | /* Check if PCI device is behind a Card-mode Dino. */ |
470 | static int pci_dev_is_behind_card_dino(struct pci_dev *dev) | |
471 | { | |
472 | struct dino_device *dino_dev; | |
473 | ||
474 | dino_dev = DINO_DEV(parisc_walk_tree(dev->bus->bridge)); | |
475 | return is_card_dino(&dino_dev->hba.dev->id); | |
476 | } | |
477 | ||
5fa16591 HD |
478 | static void pci_fixup_tulip(struct pci_dev *dev) |
479 | { | |
480 | if (!pci_dev_is_behind_card_dino(dev)) | |
481 | return; | |
482 | if (!(pci_resource_flags(dev, 1) & IORESOURCE_MEM)) | |
483 | return; | |
484 | pr_warn("%s: HP HSC-PCI Cards with card-mode Dino not yet supported.\n", | |
485 | pci_name(dev)); | |
486 | /* Disable this card by zeroing the PCI resources */ | |
487 | memset(&dev->resource[0], 0, sizeof(dev->resource[0])); | |
488 | memset(&dev->resource[1], 0, sizeof(dev->resource[1])); | |
489 | } | |
490 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_DEC, PCI_ANY_ID, pci_fixup_tulip); | |
491 | #endif /* CONFIG_TULIP */ | |
04d35d73 | 492 | |
1da177e4 LT |
493 | static void __init |
494 | dino_bios_init(void) | |
495 | { | |
496 | DBG("dino_bios_init\n"); | |
497 | } | |
498 | ||
499 | /* | |
500 | * dino_card_setup - Set up the memory space for a Dino in card mode. | |
501 | * @bus: the bus under this dino | |
502 | * | |
503 | * Claim an 8MB chunk of unused IO space and call the generic PCI routines | |
504 | * to set up the addresses of the devices on this bus. | |
505 | */ | |
506 | #define _8MB 0x00800000UL | |
507 | static void __init | |
508 | dino_card_setup(struct pci_bus *bus, void __iomem *base_addr) | |
509 | { | |
510 | int i; | |
511 | struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge)); | |
512 | struct resource *res; | |
513 | char name[128]; | |
514 | int size; | |
515 | ||
516 | res = &dino_dev->hba.lmmio_space; | |
517 | res->flags = IORESOURCE_MEM; | |
518 | size = scnprintf(name, sizeof(name), "Dino LMMIO (%s)", | |
d4995244 | 519 | dev_name(bus->bridge)); |
1da177e4 LT |
520 | res->name = kmalloc(size+1, GFP_KERNEL); |
521 | if(res->name) | |
522 | strcpy((char *)res->name, name); | |
523 | else | |
524 | res->name = dino_dev->hba.lmmio_space.name; | |
525 | ||
526 | ||
527 | if (ccio_allocate_resource(dino_dev->hba.dev, res, _8MB, | |
528 | F_EXTEND(0xf0000000UL) | _8MB, | |
529 | F_EXTEND(0xffffffffUL) &~ _8MB, _8MB) < 0) { | |
0b79ca2a | 530 | struct pci_dev *dev, *tmp; |
1da177e4 LT |
531 | |
532 | printk(KERN_ERR "Dino: cannot attach bus %s\n", | |
d4995244 | 533 | dev_name(bus->bridge)); |
1da177e4 | 534 | /* kill the bus, we can't do anything with it */ |
0b79ca2a | 535 | list_for_each_entry_safe(dev, tmp, &bus->devices, bus_list) { |
1da177e4 LT |
536 | list_del(&dev->bus_list); |
537 | } | |
538 | ||
539 | return; | |
540 | } | |
541 | bus->resource[1] = res; | |
542 | bus->resource[0] = &(dino_dev->hba.io_space); | |
543 | ||
544 | /* Now tell dino what range it has */ | |
545 | for (i = 1; i < 31; i++) { | |
546 | if (res->start == F_EXTEND(0xf0000000UL | (i * _8MB))) | |
547 | break; | |
548 | } | |
92b919fe | 549 | DBG("DINO GSC WRITE i=%d, start=%lx, dino addr = %p\n", |
1da177e4 LT |
550 | i, res->start, base_addr + DINO_IO_ADDR_EN); |
551 | __raw_writel(1 << i, base_addr + DINO_IO_ADDR_EN); | |
552 | } | |
553 | ||
554 | static void __init | |
555 | dino_card_fixup(struct pci_dev *dev) | |
556 | { | |
557 | u32 irq_pin; | |
558 | ||
559 | /* | |
560 | ** REVISIT: card-mode PCI-PCI expansion chassis do exist. | |
561 | ** Not sure they were ever productized. | |
562 | ** Die here since we'll die later in dino_inb() anyway. | |
563 | */ | |
564 | if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { | |
565 | panic("Card-Mode Dino: PCI-PCI Bridge not supported\n"); | |
566 | } | |
567 | ||
568 | /* | |
569 | ** Set Latency Timer to 0xff (not a shared bus) | |
570 | ** Set CACHELINE_SIZE. | |
571 | */ | |
572 | dino_cfg_write(dev->bus, dev->devfn, | |
573 | PCI_CACHE_LINE_SIZE, 2, 0xff00 | L1_CACHE_BYTES/4); | |
574 | ||
575 | /* | |
576 | ** Program INT_LINE for card-mode devices. | |
577 | ** The cards are hardwired according to this algorithm. | |
578 | ** And it doesn't matter if PPB's are present or not since | |
579 | ** the IRQ lines bypass the PPB. | |
580 | ** | |
581 | ** "-1" converts INTA-D (1-4) to PCIINTA-D (0-3) range. | |
582 | ** The additional "-1" adjusts for skewing the IRQ<->slot. | |
583 | */ | |
584 | dino_cfg_read(dev->bus, dev->devfn, PCI_INTERRUPT_PIN, 1, &irq_pin); | |
f0e88af8 | 585 | dev->irq = pci_swizzle_interrupt_pin(dev, irq_pin) - 1; |
1da177e4 LT |
586 | |
587 | /* Shouldn't really need to do this but it's in case someone tries | |
588 | ** to bypass PCI services and look at the card themselves. | |
589 | */ | |
590 | dino_cfg_write(dev->bus, dev->devfn, PCI_INTERRUPT_LINE, 1, dev->irq); | |
591 | } | |
592 | ||
593 | /* The alignment contraints for PCI bridges under dino */ | |
594 | #define DINO_BRIDGE_ALIGN 0x100000 | |
595 | ||
596 | ||
597 | static void __init | |
598 | dino_fixup_bus(struct pci_bus *bus) | |
599 | { | |
1da177e4 LT |
600 | struct pci_dev *dev; |
601 | struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge)); | |
1da177e4 | 602 | |
04903c06 | 603 | DBG(KERN_WARNING "%s(0x%px) bus %d platform_data 0x%px\n", |
b918c62e | 604 | __func__, bus, bus->busn_res.start, |
1da177e4 LT |
605 | bus->bridge->platform_data); |
606 | ||
607 | /* Firmware doesn't set up card-mode dino, so we have to */ | |
608 | if (is_card_dino(&dino_dev->hba.dev->id)) { | |
609 | dino_card_setup(bus, dino_dev->hba.base_addr); | |
9785d646 | 610 | } else if (bus->parent) { |
1da177e4 LT |
611 | int i; |
612 | ||
237865f1 BH |
613 | pci_read_bridge_bases(bus); |
614 | ||
615 | ||
1da177e4 LT |
616 | for(i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) { |
617 | if((bus->self->resource[i].flags & | |
618 | (IORESOURCE_IO | IORESOURCE_MEM)) == 0) | |
619 | continue; | |
620 | ||
621 | if(bus->self->resource[i].flags & IORESOURCE_MEM) { | |
622 | /* There's a quirk to alignment of | |
623 | * bridge memory resources: the start | |
624 | * is the alignment and start-end is | |
625 | * the size. However, firmware will | |
626 | * have assigned start and end, so we | |
627 | * need to take this into account */ | |
628 | bus->self->resource[i].end = bus->self->resource[i].end - bus->self->resource[i].start + DINO_BRIDGE_ALIGN; | |
629 | bus->self->resource[i].start = DINO_BRIDGE_ALIGN; | |
630 | ||
631 | } | |
632 | ||
3fad9b8d | 633 | DBG("DEBUG %s assigning %d [%pR]\n", |
d4995244 | 634 | dev_name(&bus->self->dev), i, |
3fad9b8d | 635 | &bus->self->resource[i]); |
1e0deabd | 636 | WARN_ON(pci_assign_resource(bus->self, i)); |
3fad9b8d | 637 | DBG("DEBUG %s after assign %d [%pR]\n", |
d4995244 | 638 | dev_name(&bus->self->dev), i, |
3fad9b8d | 639 | &bus->self->resource[i]); |
1da177e4 LT |
640 | } |
641 | } | |
642 | ||
643 | ||
0b79ca2a | 644 | list_for_each_entry(dev, &bus->devices, bus_list) { |
1da177e4 LT |
645 | if (is_card_dino(&dino_dev->hba.dev->id)) |
646 | dino_card_fixup(dev); | |
647 | ||
648 | /* | |
649 | ** P2PB's only have 2 BARs, no IRQs. | |
650 | ** I'd like to just ignore them for now. | |
651 | */ | |
602c9c9a HD |
652 | if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { |
653 | pcibios_init_bridge(dev); | |
1da177e4 | 654 | continue; |
602c9c9a | 655 | } |
1da177e4 | 656 | |
1da177e4 LT |
657 | /* null out the ROM resource if there is one (we don't |
658 | * care about an expansion rom on parisc, since it | |
659 | * usually contains (x86) bios code) */ | |
660 | dev->resource[PCI_ROM_RESOURCE].flags = 0; | |
661 | ||
662 | if(dev->irq == 255) { | |
663 | ||
664 | #define DINO_FIX_UNASSIGNED_INTERRUPTS | |
665 | #ifdef DINO_FIX_UNASSIGNED_INTERRUPTS | |
666 | ||
667 | /* This code tries to assign an unassigned | |
668 | * interrupt. Leave it disabled unless you | |
669 | * *really* know what you're doing since the | |
670 | * pin<->interrupt line mapping varies by bus | |
671 | * and machine */ | |
672 | ||
673 | u32 irq_pin; | |
674 | ||
675 | dino_cfg_read(dev->bus, dev->devfn, | |
676 | PCI_INTERRUPT_PIN, 1, &irq_pin); | |
f0e88af8 | 677 | irq_pin = pci_swizzle_interrupt_pin(dev, irq_pin) - 1; |
1da177e4 LT |
678 | printk(KERN_WARNING "Device %s has undefined IRQ, " |
679 | "setting to %d\n", pci_name(dev), irq_pin); | |
680 | dino_cfg_write(dev->bus, dev->devfn, | |
681 | PCI_INTERRUPT_LINE, 1, irq_pin); | |
682 | dino_assign_irq(dino_dev, irq_pin, &dev->irq); | |
683 | #else | |
684 | dev->irq = 65535; | |
685 | printk(KERN_WARNING "Device %s has unassigned IRQ\n", pci_name(dev)); | |
686 | #endif | |
687 | } else { | |
1da177e4 LT |
688 | /* Adjust INT_LINE for that busses region */ |
689 | dino_assign_irq(dino_dev, dev->irq, &dev->irq); | |
690 | } | |
691 | } | |
692 | } | |
693 | ||
694 | ||
df8e5bc6 | 695 | static struct pci_bios_ops dino_bios_ops = { |
1da177e4 LT |
696 | .init = dino_bios_init, |
697 | .fixup_bus = dino_fixup_bus | |
698 | }; | |
699 | ||
700 | ||
701 | /* | |
702 | * Initialise a DINO controller chip | |
703 | */ | |
704 | static void __init | |
705 | dino_card_init(struct dino_device *dino_dev) | |
706 | { | |
707 | u32 brdg_feat = 0x00784e05; | |
92b919fe MW |
708 | unsigned long status; |
709 | ||
710 | status = __raw_readl(dino_dev->hba.base_addr+DINO_IO_STATUS); | |
711 | if (status & 0x0000ff80) { | |
712 | __raw_writel(0x00000005, | |
713 | dino_dev->hba.base_addr+DINO_IO_COMMAND); | |
714 | udelay(1); | |
715 | } | |
1da177e4 LT |
716 | |
717 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_GMASK); | |
718 | __raw_writel(0x00000001, dino_dev->hba.base_addr+DINO_IO_FBB_EN); | |
719 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_ICR); | |
720 | ||
721 | #if 1 | |
722 | /* REVISIT - should be a runtime check (eg if (CPU_IS_PCX_L) ...) */ | |
723 | /* | |
724 | ** PCX-L processors don't support XQL like Dino wants it. | |
725 | ** PCX-L2 ignore XQL signal and it doesn't matter. | |
726 | */ | |
727 | brdg_feat &= ~0x4; /* UXQL */ | |
728 | #endif | |
729 | __raw_writel( brdg_feat, dino_dev->hba.base_addr+DINO_BRDG_FEAT); | |
730 | ||
731 | /* | |
732 | ** Don't enable address decoding until we know which I/O range | |
733 | ** currently is available from the host. Only affects MMIO | |
734 | ** and not I/O port space. | |
735 | */ | |
736 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_IO_ADDR_EN); | |
737 | ||
738 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_DAMODE); | |
739 | __raw_writel(0x00222222, dino_dev->hba.base_addr+DINO_PCIROR); | |
740 | __raw_writel(0x00222222, dino_dev->hba.base_addr+DINO_PCIWOR); | |
741 | ||
742 | __raw_writel(0x00000040, dino_dev->hba.base_addr+DINO_MLTIM); | |
743 | __raw_writel(0x00000080, dino_dev->hba.base_addr+DINO_IO_CONTROL); | |
744 | __raw_writel(0x0000008c, dino_dev->hba.base_addr+DINO_TLTIM); | |
745 | ||
746 | /* Disable PAMR before writing PAPR */ | |
747 | __raw_writel(0x0000007e, dino_dev->hba.base_addr+DINO_PAMR); | |
748 | __raw_writel(0x0000007f, dino_dev->hba.base_addr+DINO_PAPR); | |
749 | __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_PAMR); | |
750 | ||
751 | /* | |
752 | ** Dino ERS encourages enabling FBB (0x6f). | |
753 | ** We can't until we know *all* devices below us can support it. | |
754 | ** (Something in device configuration header tells us). | |
755 | */ | |
756 | __raw_writel(0x0000004f, dino_dev->hba.base_addr+DINO_PCICMD); | |
757 | ||
758 | /* Somewhere, the PCI spec says give devices 1 second | |
759 | ** to recover from the #RESET being de-asserted. | |
760 | ** Experience shows most devices only need 10ms. | |
761 | ** This short-cut speeds up booting significantly. | |
762 | */ | |
763 | mdelay(pci_post_reset_delay); | |
764 | } | |
765 | ||
766 | static int __init | |
767 | dino_bridge_init(struct dino_device *dino_dev, const char *name) | |
768 | { | |
769 | unsigned long io_addr; | |
770 | int result, i, count=0; | |
771 | struct resource *res, *prevres = NULL; | |
772 | /* | |
773 | * Decoding IO_ADDR_EN only works for Built-in Dino | |
774 | * since PDC has already initialized this. | |
775 | */ | |
776 | ||
777 | io_addr = __raw_readl(dino_dev->hba.base_addr + DINO_IO_ADDR_EN); | |
778 | if (io_addr == 0) { | |
779 | printk(KERN_WARNING "%s: No PCI devices enabled.\n", name); | |
780 | return -ENODEV; | |
781 | } | |
782 | ||
783 | res = &dino_dev->hba.lmmio_space; | |
784 | for (i = 0; i < 32; i++) { | |
785 | unsigned long start, end; | |
786 | ||
787 | if((io_addr & (1 << i)) == 0) | |
788 | continue; | |
789 | ||
5076c158 | 790 | start = F_EXTEND(0xf0000000UL) | (i << 23); |
1da177e4 LT |
791 | end = start + 8 * 1024 * 1024 - 1; |
792 | ||
793 | DBG("DINO RANGE %d is at 0x%lx-0x%lx\n", count, | |
794 | start, end); | |
795 | ||
796 | if(prevres && prevres->end + 1 == start) { | |
797 | prevres->end = end; | |
798 | } else { | |
799 | if(count >= DINO_MAX_LMMIO_RESOURCES) { | |
800 | printk(KERN_ERR "%s is out of resource windows for range %d (0x%lx-0x%lx)\n", name, count, start, end); | |
801 | break; | |
802 | } | |
803 | prevres = res; | |
804 | res->start = start; | |
805 | res->end = end; | |
806 | res->flags = IORESOURCE_MEM; | |
807 | res->name = kmalloc(64, GFP_KERNEL); | |
808 | if(res->name) | |
809 | snprintf((char *)res->name, 64, "%s LMMIO %d", | |
810 | name, count); | |
811 | res++; | |
812 | count++; | |
813 | } | |
814 | } | |
815 | ||
816 | res = &dino_dev->hba.lmmio_space; | |
817 | ||
818 | for(i = 0; i < DINO_MAX_LMMIO_RESOURCES; i++) { | |
819 | if(res[i].flags == 0) | |
820 | break; | |
821 | ||
822 | result = ccio_request_resource(dino_dev->hba.dev, &res[i]); | |
823 | if (result < 0) { | |
c18b4608 | 824 | printk(KERN_ERR "%s: failed to claim PCI Bus address " |
3fad9b8d | 825 | "space %d (%pR)!\n", name, i, &res[i]); |
1da177e4 LT |
826 | return result; |
827 | } | |
828 | } | |
829 | return 0; | |
830 | } | |
831 | ||
832 | static int __init dino_common_init(struct parisc_device *dev, | |
833 | struct dino_device *dino_dev, const char *name) | |
834 | { | |
835 | int status; | |
836 | u32 eim; | |
1da177e4 LT |
837 | struct resource *res; |
838 | ||
839 | pcibios_register_hba(&dino_dev->hba); | |
840 | ||
841 | pci_bios = &dino_bios_ops; /* used by pci_scan_bus() */ | |
842 | pci_port = &dino_port_ops; | |
843 | ||
844 | /* | |
845 | ** Note: SMP systems can make use of IRR1/IAR1 registers | |
846 | ** But it won't buy much performance except in very | |
847 | ** specific applications/configurations. Note Dino | |
848 | ** still only has 11 IRQ input lines - just map some of them | |
849 | ** to a different processor. | |
850 | */ | |
939fc856 HD |
851 | dev->irq = gsc_alloc_irq(&dino_dev->gsc_irq); |
852 | eim = ((u32) dino_dev->gsc_irq.txn_addr) | dino_dev->gsc_irq.txn_data; | |
1da177e4 LT |
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 " | |
04903c06 | 901 | "0x%lx/%lx (hpa 0x%px)\n", |
c18b4608 AB |
902 | name, (unsigned long)res->start, (unsigned long)res->end, |
903 | dino_dev->hba.base_addr); | |
1da177e4 LT |
904 | return 1; |
905 | } | |
906 | ||
907 | return 0; | |
908 | } | |
909 | ||
910 | #define CUJO_RAVEN_ADDR F_EXTEND(0xf1000000UL) | |
911 | #define CUJO_FIREHAWK_ADDR F_EXTEND(0xf1604000UL) | |
912 | #define CUJO_RAVEN_BADPAGE 0x01003000UL | |
913 | #define CUJO_FIREHAWK_BADPAGE 0x01607000UL | |
914 | ||
544f4485 | 915 | static const char dino_vers[][4] = { |
1da177e4 LT |
916 | "2.0", |
917 | "2.1", | |
918 | "3.0", | |
919 | "3.1" | |
920 | }; | |
921 | ||
544f4485 | 922 | static const char cujo_vers[][4] = { |
1da177e4 LT |
923 | "1.0", |
924 | "2.0" | |
925 | }; | |
926 | ||
927 | void ccio_cujo20_fixup(struct parisc_device *dev, u32 iovp); | |
928 | ||
929 | /* | |
930 | ** Determine if dino should claim this chip (return 0) or not (return 1). | |
931 | ** If so, initialize the chip appropriately (card-mode vs bridge mode). | |
932 | ** Much of the initialization is common though. | |
933 | */ | |
53f01bba | 934 | static int __init dino_probe(struct parisc_device *dev) |
1da177e4 LT |
935 | { |
936 | struct dino_device *dino_dev; // Dino specific control struct | |
937 | const char *version = "unknown"; | |
938 | char *name; | |
939 | int is_cujo = 0; | |
7590e500 | 940 | LIST_HEAD(resources); |
1da177e4 | 941 | struct pci_bus *bus; |
53f01bba | 942 | unsigned long hpa = dev->hpa.start; |
30aa80da | 943 | int max; |
53f01bba | 944 | |
1da177e4 LT |
945 | name = "Dino"; |
946 | if (is_card_dino(&dev->id)) { | |
947 | version = "3.x (card mode)"; | |
948 | } else { | |
f45adcf9 | 949 | if (!is_cujo(&dev->id)) { |
1da177e4 LT |
950 | if (dev->id.hversion_rev < 4) { |
951 | version = dino_vers[dev->id.hversion_rev]; | |
952 | } | |
953 | } else { | |
954 | name = "Cujo"; | |
955 | is_cujo = 1; | |
956 | if (dev->id.hversion_rev < 2) { | |
957 | version = cujo_vers[dev->id.hversion_rev]; | |
958 | } | |
959 | } | |
960 | } | |
961 | ||
92b919fe | 962 | printk("%s version %s found at 0x%lx\n", name, version, hpa); |
1da177e4 | 963 | |
92b919fe | 964 | if (!request_mem_region(hpa, PAGE_SIZE, name)) { |
3335f75a | 965 | printk(KERN_ERR "DINO: Hey! Someone took my MMIO space (0x%lx)!\n", |
92b919fe | 966 | hpa); |
1da177e4 LT |
967 | return 1; |
968 | } | |
969 | ||
970 | /* Check for bugs */ | |
971 | if (is_cujo && dev->id.hversion_rev == 1) { | |
972 | #ifdef CONFIG_IOMMU_CCIO | |
973 | printk(KERN_WARNING "Enabling Cujo 2.0 bug workaround\n"); | |
92b919fe | 974 | if (hpa == (unsigned long)CUJO_RAVEN_ADDR) { |
1da177e4 | 975 | ccio_cujo20_fixup(dev, CUJO_RAVEN_BADPAGE); |
92b919fe | 976 | } else if (hpa == (unsigned long)CUJO_FIREHAWK_ADDR) { |
1da177e4 LT |
977 | ccio_cujo20_fixup(dev, CUJO_FIREHAWK_BADPAGE); |
978 | } else { | |
92b919fe | 979 | printk("Don't recognise Cujo at address 0x%lx, not enabling workaround\n", hpa); |
1da177e4 LT |
980 | } |
981 | #endif | |
982 | } else if (!is_cujo && !is_card_dino(&dev->id) && | |
983 | dev->id.hversion_rev < 3) { | |
984 | printk(KERN_WARNING | |
985 | "The GSCtoPCI (Dino hrev %d) bus converter found may exhibit\n" | |
986 | "data corruption. See Service Note Numbers: A4190A-01, A4191A-01.\n" | |
987 | "Systems shipped after Aug 20, 1997 will not exhibit this problem.\n" | |
988 | "Models affected: C180, C160, C160L, B160L, and B132L workstations.\n\n", | |
989 | dev->id.hversion_rev); | |
990 | /* REVISIT: why are C200/C240 listed in the README table but not | |
991 | ** "Models affected"? Could be an omission in the original literature. | |
992 | */ | |
993 | } | |
994 | ||
cb6fc18e | 995 | dino_dev = kzalloc(sizeof(struct dino_device), GFP_KERNEL); |
1da177e4 LT |
996 | if (!dino_dev) { |
997 | printk("dino_init_chip - couldn't alloc dino_device\n"); | |
998 | return 1; | |
999 | } | |
1000 | ||
1da177e4 | 1001 | dino_dev->hba.dev = dev; |
4bdc0d67 | 1002 | dino_dev->hba.base_addr = ioremap(hpa, 4096); |
40981160 | 1003 | dino_dev->hba.lmmio_space_offset = PCI_F_EXTEND; |
1da177e4 LT |
1004 | spin_lock_init(&dino_dev->dinosaur_pen); |
1005 | dino_dev->hba.iommu = ccio_get_iommu(dev); | |
1006 | ||
1007 | if (is_card_dino(&dev->id)) { | |
1008 | dino_card_init(dino_dev); | |
1009 | } else { | |
1010 | dino_bridge_init(dino_dev, name); | |
1011 | } | |
1012 | ||
1013 | if (dino_common_init(dev, dino_dev, name)) | |
1014 | return 1; | |
1015 | ||
1016 | dev->dev.platform_data = dino_dev; | |
1017 | ||
39c2462e BH |
1018 | pci_add_resource_offset(&resources, &dino_dev->hba.io_space, |
1019 | HBA_PORT_BASE(dino_dev->hba.hba_num)); | |
7590e500 | 1020 | if (dino_dev->hba.lmmio_space.flags) |
39c2462e BH |
1021 | pci_add_resource_offset(&resources, &dino_dev->hba.lmmio_space, |
1022 | dino_dev->hba.lmmio_space_offset); | |
7590e500 | 1023 | if (dino_dev->hba.elmmio_space.flags) |
39c2462e BH |
1024 | pci_add_resource_offset(&resources, &dino_dev->hba.elmmio_space, |
1025 | dino_dev->hba.lmmio_space_offset); | |
7590e500 BH |
1026 | if (dino_dev->hba.gmmio_space.flags) |
1027 | pci_add_resource(&resources, &dino_dev->hba.gmmio_space); | |
1028 | ||
30aa80da YL |
1029 | dino_dev->hba.bus_num.start = dino_current_bus; |
1030 | dino_dev->hba.bus_num.end = 255; | |
1031 | dino_dev->hba.bus_num.flags = IORESOURCE_BUS; | |
1032 | pci_add_resource(&resources, &dino_dev->hba.bus_num); | |
1da177e4 LT |
1033 | /* |
1034 | ** It's not used to avoid chicken/egg problems | |
1035 | ** with configuration accessor functions. | |
1036 | */ | |
7590e500 BH |
1037 | dino_dev->hba.hba_bus = bus = pci_create_root_bus(&dev->dev, |
1038 | dino_current_bus, &dino_cfg_ops, NULL, &resources); | |
c4e06576 | 1039 | if (!bus) { |
fed99b1e | 1040 | printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (duplicate bus number %d?)\n", |
d4995244 | 1041 | dev_name(&dev->dev), dino_current_bus); |
7590e500 | 1042 | pci_free_resource_list(&resources); |
1da177e4 LT |
1043 | /* increment the bus number in case of duplicates */ |
1044 | dino_current_bus++; | |
c4e06576 | 1045 | return 0; |
1da177e4 | 1046 | } |
c4e06576 | 1047 | |
30aa80da YL |
1048 | max = pci_scan_child_bus(bus); |
1049 | pci_bus_update_busn_res_end(bus, max); | |
c4e06576 BH |
1050 | |
1051 | /* This code *depends* on scanning being single threaded | |
1052 | * if it isn't, this global bus number count will fail | |
1053 | */ | |
30aa80da | 1054 | dino_current_bus = max + 1; |
c4e06576 BH |
1055 | pci_bus_assign_resources(bus); |
1056 | pci_bus_add_devices(bus); | |
1da177e4 LT |
1057 | return 0; |
1058 | } | |
1059 | ||
1060 | /* | |
1061 | * Normally, we would just test sversion. But the Elroy PCI adapter has | |
1062 | * the same sversion as Dino, so we have to check hversion as well. | |
1063 | * Unfortunately, the J2240 PDC reports the wrong hversion for the first | |
1064 | * Dino, so we have to test for Dino, Cujo and Dino-in-a-J2240. | |
1065 | * For card-mode Dino, most machines report an sversion of 9D. But 715 | |
1066 | * and 725 firmware misreport it as 0x08080 for no adequately explained | |
1067 | * reason. | |
1068 | */ | |
cfe4fbfb | 1069 | static const struct parisc_device_id dino_tbl[] __initconst = { |
1da177e4 LT |
1070 | { HPHW_A_DMA, HVERSION_REV_ANY_ID, 0x004, 0x0009D },/* Card-mode Dino */ |
1071 | { HPHW_A_DMA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x08080 }, /* XXX */ | |
1072 | { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x680, 0xa }, /* Bridge-mode Dino */ | |
1073 | { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x682, 0xa }, /* Bridge-mode Cujo */ | |
1074 | { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x05d, 0xa }, /* Dino in a J2240 */ | |
1075 | { 0, } | |
1076 | }; | |
1077 | ||
cfe4fbfb | 1078 | static struct parisc_driver dino_driver __refdata = { |
bdad1f83 | 1079 | .name = "dino", |
1da177e4 | 1080 | .id_table = dino_tbl, |
bdad1f83 | 1081 | .probe = dino_probe, |
1da177e4 LT |
1082 | }; |
1083 | ||
1084 | /* | |
1085 | * One time initialization to let the world know Dino is here. | |
1086 | * This is the only routine which is NOT static. | |
1087 | * Must be called exactly once before pci_init(). | |
1088 | */ | |
1089 | int __init dino_init(void) | |
1090 | { | |
1091 | register_parisc_driver(&dino_driver); | |
1092 | return 0; | |
1093 | } | |
1094 |