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1da177e4 LT |
1 | /* soc.c: Sparc SUNW,soc (Serial Optical Channel) Fibre Channel Sbus adapter support. |
2 | * | |
3 | * Copyright (C) 1996,1997,1999 Jakub Jelinek (jj@ultra.linux.cz) | |
4 | * Copyright (C) 1997,1998 Jirka Hanika (geo@ff.cuni.cz) | |
5 | * | |
6 | * Sources: | |
7 | * Fibre Channel Physical & Signaling Interface (FC-PH), dpANS, 1994 | |
8 | * dpANS Fibre Channel Protocol for SCSI (X3.269-199X), Rev. 012, 1995 | |
9 | * | |
10 | * Supported hardware: | |
11 | * Tested on SOC sbus card bought with SS1000 in Linux running on SS5 and Ultra1. | |
12 | * For SOC sbus cards, you have to make sure your FCode is 1.52 or later. | |
13 | * If you have older FCode, you should try to upgrade or get SOC microcode from Sun | |
14 | * (the microcode is present in Solaris soc driver as well). In that case you need | |
15 | * to #define HAVE_SOC_UCODE and format the microcode into soc_asm.c. For the exact | |
16 | * format mail me and I will tell you. I cannot offer you the actual microcode though, | |
17 | * unless Sun confirms they don't mind. | |
18 | */ | |
19 | ||
20 | static char *version = | |
21 | "soc.c:v1.3 9/Feb/99 Jakub Jelinek (jj@ultra.linux.cz), Jirka Hanika (geo@ff.cuni.cz)\n"; | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/kernel.h> | |
25 | #include <linux/sched.h> | |
26 | #include <linux/types.h> | |
27 | #include <linux/fcntl.h> | |
28 | #include <linux/interrupt.h> | |
29 | #include <linux/ptrace.h> | |
30 | #include <linux/ioport.h> | |
31 | #include <linux/in.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/string.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/bitops.h> | |
36 | #include <asm/io.h> | |
37 | #include <asm/dma.h> | |
38 | #include <linux/errno.h> | |
39 | #include <asm/byteorder.h> | |
40 | ||
41 | #include <asm/openprom.h> | |
42 | #include <asm/oplib.h> | |
43 | #include <asm/pgtable.h> | |
44 | #include <asm/irq.h> | |
45 | ||
46 | /* #define SOCDEBUG */ | |
47 | /* #define HAVE_SOC_UCODE */ | |
48 | ||
49 | #include "fcp_impl.h" | |
50 | #include "soc.h" | |
51 | #ifdef HAVE_SOC_UCODE | |
52 | #include "soc_asm.h" | |
53 | #endif | |
54 | ||
55 | #define soc_printk printk ("soc%d: ", s->soc_no); printk | |
56 | ||
57 | #ifdef SOCDEBUG | |
58 | #define SOD(x) soc_printk x; | |
59 | #else | |
60 | #define SOD(x) | |
61 | #endif | |
62 | ||
63 | #define for_each_soc(s) for (s = socs; s; s = s->next) | |
64 | struct soc *socs = NULL; | |
65 | ||
66 | static inline void soc_disable(struct soc *s) | |
67 | { | |
68 | sbus_writel(0, s->regs + IMASK); | |
69 | sbus_writel(SOC_CMD_SOFT_RESET, s->regs + CMD); | |
70 | } | |
71 | ||
72 | static inline void soc_enable(struct soc *s) | |
73 | { | |
74 | SOD(("enable %08x\n", s->cfg)) | |
75 | sbus_writel(0, s->regs + SAE); | |
76 | sbus_writel(s->cfg, s->regs + CFG); | |
77 | sbus_writel(SOC_CMD_RSP_QALL, s->regs + CMD); | |
78 | SOC_SETIMASK(s, SOC_IMASK_RSP_QALL | SOC_IMASK_SAE); | |
79 | SOD(("imask %08lx %08lx\n", s->imask, sbus_readl(s->regs + IMAK))); | |
80 | } | |
81 | ||
82 | static void soc_reset(fc_channel *fc) | |
83 | { | |
84 | soc_port *port = (soc_port *)fc; | |
85 | struct soc *s = port->s; | |
86 | ||
87 | /* FIXME */ | |
88 | soc_disable(s); | |
89 | s->req[0].seqno = 1; | |
90 | s->req[1].seqno = 1; | |
91 | s->rsp[0].seqno = 1; | |
92 | s->rsp[1].seqno = 1; | |
93 | s->req[0].in = 0; | |
94 | s->req[1].in = 0; | |
95 | s->rsp[0].in = 0; | |
96 | s->rsp[1].in = 0; | |
97 | s->req[0].out = 0; | |
98 | s->req[1].out = 0; | |
99 | s->rsp[0].out = 0; | |
100 | s->rsp[1].out = 0; | |
101 | ||
102 | /* FIXME */ | |
103 | soc_enable(s); | |
104 | } | |
105 | ||
106 | static inline void soc_solicited (struct soc *s) | |
107 | { | |
108 | fc_hdr fchdr; | |
109 | soc_rsp __iomem *hwrsp; | |
110 | soc_cq_rsp *sw_cq; | |
111 | int token; | |
112 | int status; | |
113 | fc_channel *fc; | |
114 | ||
115 | sw_cq = &s->rsp[SOC_SOLICITED_RSP_Q]; | |
116 | ||
117 | if (sw_cq->pool == NULL) | |
118 | sw_cq->pool = (soc_req __iomem *) | |
119 | (s->xram + xram_get_32low ((xram_p)&sw_cq->hw_cq->address)); | |
120 | sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in); | |
121 | SOD (("soc_solicited, %d pkts arrived\n", (sw_cq->in-sw_cq->out) & sw_cq->last)) | |
122 | for (;;) { | |
123 | hwrsp = (soc_rsp __iomem *)sw_cq->pool + sw_cq->out; | |
124 | token = xram_get_32low ((xram_p)&hwrsp->shdr.token); | |
125 | status = xram_get_32low ((xram_p)&hwrsp->status); | |
126 | fc = (fc_channel *)(&s->port[(token >> 11) & 1]); | |
127 | ||
128 | if (status == SOC_OK) { | |
129 | fcp_receive_solicited(fc, token >> 12, | |
130 | token & ((1 << 11) - 1), | |
131 | FC_STATUS_OK, NULL); | |
132 | } else { | |
133 | xram_copy_from(&fchdr, (xram_p)&hwrsp->fchdr, sizeof(fchdr)); | |
134 | /* We have intentionally defined FC_STATUS_* constants | |
135 | * to match SOC_* constants, otherwise we'd have to | |
136 | * translate status. | |
137 | */ | |
138 | fcp_receive_solicited(fc, token >> 12, | |
139 | token & ((1 << 11) - 1), | |
140 | status, &fchdr); | |
141 | } | |
142 | ||
143 | if (++sw_cq->out > sw_cq->last) { | |
144 | sw_cq->seqno++; | |
145 | sw_cq->out = 0; | |
146 | } | |
147 | ||
148 | if (sw_cq->out == sw_cq->in) { | |
149 | sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in); | |
150 | if (sw_cq->out == sw_cq->in) { | |
151 | /* Tell the hardware about it */ | |
152 | sbus_writel((sw_cq->out << 24) | | |
153 | (SOC_CMD_RSP_QALL & | |
154 | ~(SOC_CMD_RSP_Q0 << SOC_SOLICITED_RSP_Q)), | |
155 | s->regs + CMD); | |
156 | ||
157 | /* Read it, so that we're sure it has been updated */ | |
158 | sbus_readl(s->regs + CMD); | |
159 | sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in); | |
160 | if (sw_cq->out == sw_cq->in) | |
161 | break; | |
162 | } | |
163 | } | |
164 | } | |
165 | } | |
166 | ||
167 | static inline void soc_request (struct soc *s, u32 cmd) | |
168 | { | |
169 | SOC_SETIMASK(s, s->imask & ~(cmd & SOC_CMD_REQ_QALL)); | |
170 | SOD(("imask %08lx %08lx\n", s->imask, sbus_readl(s->regs + IMASK))); | |
171 | ||
172 | SOD(("Queues available %08x OUT %X %X\n", cmd, | |
173 | xram_get_8((xram_p)&s->req[0].hw_cq->out), | |
174 | xram_get_8((xram_p)&s->req[0].hw_cq->out))) | |
175 | if (s->port[s->curr_port].fc.state != FC_STATE_OFFLINE) { | |
176 | fcp_queue_empty ((fc_channel *)&(s->port[s->curr_port])); | |
177 | if (((s->req[1].in + 1) & s->req[1].last) != (s->req[1].out)) | |
178 | fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port])); | |
179 | } else { | |
180 | fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port])); | |
181 | } | |
182 | if (s->port[1 - s->curr_port].fc.state != FC_STATE_OFFLINE) | |
183 | s->curr_port ^= 1; | |
184 | } | |
185 | ||
186 | static inline void soc_unsolicited (struct soc *s) | |
187 | { | |
188 | soc_rsp __iomem *hwrsp, *hwrspc; | |
189 | soc_cq_rsp *sw_cq; | |
190 | int count; | |
191 | int status; | |
192 | int flags; | |
193 | fc_channel *fc; | |
194 | ||
195 | sw_cq = &s->rsp[SOC_UNSOLICITED_RSP_Q]; | |
196 | if (sw_cq->pool == NULL) | |
197 | sw_cq->pool = (soc_req __iomem *) | |
198 | (s->xram + (xram_get_32low ((xram_p)&sw_cq->hw_cq->address))); | |
199 | ||
200 | sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in); | |
201 | SOD (("soc_unsolicited, %d packets arrived\n", (sw_cq->in - sw_cq->out) & sw_cq->last)) | |
202 | while (sw_cq->in != sw_cq->out) { | |
203 | /* ...real work per entry here... */ | |
204 | hwrsp = (soc_rsp __iomem *)sw_cq->pool + sw_cq->out; | |
205 | ||
206 | hwrspc = NULL; | |
207 | flags = xram_get_16 ((xram_p)&hwrsp->shdr.flags); | |
208 | count = xram_get_8 ((xram_p)&hwrsp->count); | |
209 | fc = (fc_channel *)&s->port[flags & SOC_PORT_B]; | |
210 | SOD(("FC %08lx fcp_state_change %08lx\n", | |
211 | (long)fc, (long)fc->fcp_state_change)) | |
212 | ||
213 | if (count != 1) { | |
214 | /* Ugh, continuation entries */ | |
215 | u8 in; | |
216 | ||
217 | if (count != 2) { | |
218 | printk("%s: Too many continuations entries %d\n", | |
219 | fc->name, count); | |
220 | goto update_out; | |
221 | } | |
222 | ||
223 | in = sw_cq->in; | |
224 | if (in < sw_cq->out) in += sw_cq->last + 1; | |
225 | if (in < sw_cq->out + 2) { | |
226 | /* Ask the hardware if they haven't arrived yet. */ | |
227 | sbus_writel((sw_cq->out << 24) | | |
228 | (SOC_CMD_RSP_QALL & | |
229 | ~(SOC_CMD_RSP_Q0 << SOC_UNSOLICITED_RSP_Q)), | |
230 | s->regs + CMD); | |
231 | ||
232 | /* Read it, so that we're sure it has been updated */ | |
233 | sbus_readl(s->regs + CMD); | |
234 | sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in); | |
235 | in = sw_cq->in; | |
236 | if (in < sw_cq->out) | |
237 | in += sw_cq->last + 1; | |
238 | if (in < sw_cq->out + 2) /* Nothing came, let us wait */ | |
239 | return; | |
240 | } | |
241 | if (sw_cq->out == sw_cq->last) | |
242 | hwrspc = (soc_rsp __iomem *)sw_cq->pool; | |
243 | else | |
244 | hwrspc = hwrsp + 1; | |
245 | } | |
246 | ||
247 | switch (flags & ~SOC_PORT_B) { | |
248 | case SOC_STATUS: | |
249 | status = xram_get_32low ((xram_p)&hwrsp->status); | |
250 | switch (status) { | |
251 | case SOC_ONLINE: | |
252 | SOD(("State change to ONLINE\n")); | |
253 | fcp_state_change(fc, FC_STATE_ONLINE); | |
254 | break; | |
255 | case SOC_OFFLINE: | |
256 | SOD(("State change to OFFLINE\n")); | |
257 | fcp_state_change(fc, FC_STATE_OFFLINE); | |
258 | break; | |
259 | default: | |
260 | printk ("%s: Unknown STATUS no %d\n", | |
261 | fc->name, status); | |
262 | break; | |
263 | } | |
264 | break; | |
265 | case (SOC_UNSOLICITED|SOC_FC_HDR): | |
266 | { | |
267 | int r_ctl = xram_get_8 ((xram_p)&hwrsp->fchdr); | |
268 | unsigned len; | |
269 | char buf[64]; | |
270 | ||
271 | if ((r_ctl & 0xf0) == R_CTL_EXTENDED_SVC) { | |
272 | len = xram_get_32 ((xram_p)&hwrsp->shdr.bytecnt); | |
273 | if (len < 4 || !hwrspc) { | |
274 | printk ("%s: Invalid R_CTL %02x " | |
275 | "continuation entries\n", | |
276 | fc->name, r_ctl); | |
277 | } else { | |
278 | if (len > 60) | |
279 | len = 60; | |
280 | xram_copy_from (buf, (xram_p)hwrspc, | |
281 | (len + 3) & ~3); | |
282 | if (*(u32 *)buf == LS_DISPLAY) { | |
283 | int i; | |
284 | ||
285 | for (i = 4; i < len; i++) | |
286 | if (buf[i] == '\n') | |
287 | buf[i] = ' '; | |
288 | buf[len] = 0; | |
289 | printk ("%s message: %s\n", | |
290 | fc->name, buf + 4); | |
291 | } else { | |
292 | printk ("%s: Unknown LS_CMD " | |
293 | "%02x\n", fc->name, | |
294 | buf[0]); | |
295 | } | |
296 | } | |
297 | } else { | |
298 | printk ("%s: Unsolicited R_CTL %02x " | |
299 | "not handled\n", fc->name, r_ctl); | |
300 | } | |
301 | } | |
302 | break; | |
303 | default: | |
304 | printk ("%s: Unexpected flags %08x\n", fc->name, flags); | |
305 | break; | |
306 | }; | |
307 | update_out: | |
308 | if (++sw_cq->out > sw_cq->last) { | |
309 | sw_cq->seqno++; | |
310 | sw_cq->out = 0; | |
311 | } | |
312 | ||
313 | if (hwrspc) { | |
314 | if (++sw_cq->out > sw_cq->last) { | |
315 | sw_cq->seqno++; | |
316 | sw_cq->out = 0; | |
317 | } | |
318 | } | |
319 | ||
320 | if (sw_cq->out == sw_cq->in) { | |
321 | sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in); | |
322 | if (sw_cq->out == sw_cq->in) { | |
323 | /* Tell the hardware about it */ | |
324 | sbus_writel((sw_cq->out << 24) | | |
325 | (SOC_CMD_RSP_QALL & | |
326 | ~(SOC_CMD_RSP_Q0 << SOC_UNSOLICITED_RSP_Q)), | |
327 | s->regs + CMD); | |
328 | ||
329 | /* Read it, so that we're sure it has been updated */ | |
330 | sbus_readl(s->regs + CMD); | |
331 | sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in); | |
332 | } | |
333 | } | |
334 | } | |
335 | } | |
336 | ||
337 | static irqreturn_t soc_intr(int irq, void *dev_id, struct pt_regs *regs) | |
338 | { | |
339 | u32 cmd; | |
340 | unsigned long flags; | |
341 | register struct soc *s = (struct soc *)dev_id; | |
342 | ||
343 | spin_lock_irqsave(&s->lock, flags); | |
344 | cmd = sbus_readl(s->regs + CMD); | |
345 | for (; (cmd = SOC_INTR (s, cmd)); cmd = sbus_readl(s->regs + CMD)) { | |
346 | if (cmd & SOC_CMD_RSP_Q1) soc_unsolicited (s); | |
347 | if (cmd & SOC_CMD_RSP_Q0) soc_solicited (s); | |
348 | if (cmd & SOC_CMD_REQ_QALL) soc_request (s, cmd); | |
349 | } | |
350 | spin_unlock_irqrestore(&s->lock, flags); | |
351 | ||
352 | return IRQ_HANDLED; | |
353 | } | |
354 | ||
355 | #define TOKEN(proto, port, token) (((proto)<<12)|(token)|(port)) | |
356 | ||
357 | static int soc_hw_enque (fc_channel *fc, fcp_cmnd *fcmd) | |
358 | { | |
359 | soc_port *port = (soc_port *)fc; | |
360 | struct soc *s = port->s; | |
361 | int qno; | |
362 | soc_cq_req *sw_cq; | |
363 | int cq_next_in; | |
364 | soc_req *request; | |
365 | fc_hdr *fch; | |
366 | int i; | |
367 | ||
368 | if (fcmd->proto == TYPE_SCSI_FCP) | |
369 | qno = 1; | |
370 | else | |
371 | qno = 0; | |
372 | SOD(("Putting a FCP packet type %d into hw queue %d\n", fcmd->proto, qno)) | |
373 | if (s->imask & (SOC_IMASK_REQ_Q0 << qno)) { | |
374 | SOD(("EIO %08x\n", s->imask)) | |
375 | return -EIO; | |
376 | } | |
377 | sw_cq = s->req + qno; | |
378 | cq_next_in = (sw_cq->in + 1) & sw_cq->last; | |
379 | ||
380 | if (cq_next_in == sw_cq->out && | |
381 | cq_next_in == (sw_cq->out = xram_get_8((xram_p)&sw_cq->hw_cq->out))) { | |
382 | SOD(("%d IN %d OUT %d LAST %d\n", qno, sw_cq->in, sw_cq->out, sw_cq->last)) | |
383 | SOC_SETIMASK(s, s->imask | (SOC_IMASK_REQ_Q0 << qno)); | |
384 | SOD(("imask %08lx %08lx\n", s->imask, sbus_readl(s->regs + IMASK))); | |
385 | /* If queue is full, just say NO */ | |
386 | return -EBUSY; | |
387 | } | |
388 | ||
389 | request = sw_cq->pool + sw_cq->in; | |
390 | fch = &request->fchdr; | |
391 | ||
392 | switch (fcmd->proto) { | |
393 | case TYPE_SCSI_FCP: | |
394 | request->shdr.token = TOKEN(TYPE_SCSI_FCP, port->mask, fcmd->token); | |
395 | request->data[0].base = fc->dma_scsi_cmd + fcmd->token * sizeof(fcp_cmd); | |
396 | request->data[0].count = sizeof(fcp_cmd); | |
397 | request->data[1].base = fc->dma_scsi_rsp + fcmd->token * fc->rsp_size; | |
398 | request->data[1].count = fc->rsp_size; | |
399 | if (fcmd->data) { | |
400 | request->shdr.segcnt = 3; | |
401 | i = fc->scsi_cmd_pool[fcmd->token].fcp_data_len; | |
402 | request->shdr.bytecnt = i; | |
403 | request->data[2].base = fcmd->data; | |
404 | request->data[2].count = i; | |
405 | request->type = | |
406 | (fc->scsi_cmd_pool[fcmd->token].fcp_cntl & FCP_CNTL_WRITE) ? | |
407 | SOC_CQTYPE_IO_WRITE : SOC_CQTYPE_IO_READ; | |
408 | } else { | |
409 | request->shdr.segcnt = 2; | |
410 | request->shdr.bytecnt = 0; | |
411 | request->data[2].base = 0; | |
412 | request->data[2].count = 0; | |
413 | request->type = SOC_CQTYPE_SIMPLE; | |
414 | } | |
415 | FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fc->did); | |
416 | FILL_FCHDR_SID(fch, fc->sid); | |
417 | FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, | |
418 | F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE); | |
419 | FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0); | |
420 | FILL_FCHDR_OXRX(fch, 0xffff, 0xffff); | |
421 | fch->param = 0; | |
422 | request->shdr.flags = port->flags; | |
423 | request->shdr.class = 2; | |
424 | break; | |
425 | ||
426 | case PROTO_OFFLINE: | |
427 | memset (request, 0, sizeof(*request)); | |
428 | request->shdr.token = TOKEN(PROTO_OFFLINE, port->mask, fcmd->token); | |
429 | request->type = SOC_CQTYPE_OFFLINE; | |
430 | FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fc->did); | |
431 | FILL_FCHDR_SID(fch, fc->sid); | |
432 | FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, | |
433 | F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE); | |
434 | FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0); | |
435 | FILL_FCHDR_OXRX(fch, 0xffff, 0xffff); | |
436 | request->shdr.flags = port->flags; | |
437 | break; | |
438 | ||
439 | case PROTO_REPORT_AL_MAP: | |
440 | /* SOC only supports Point-to-Point topology, no FC-AL, sorry... */ | |
441 | return -ENOSYS; | |
442 | ||
443 | default: | |
444 | request->shdr.token = TOKEN(fcmd->proto, port->mask, fcmd->token); | |
445 | request->shdr.class = 2; | |
446 | request->shdr.flags = port->flags; | |
447 | memcpy (fch, &fcmd->fch, sizeof(fc_hdr)); | |
448 | request->data[0].count = fcmd->cmdlen; | |
449 | request->data[1].count = fcmd->rsplen; | |
450 | request->type = fcmd->class; | |
451 | switch (fcmd->class) { | |
452 | case FC_CLASS_OUTBOUND: | |
453 | request->data[0].base = fcmd->cmd; | |
454 | request->data[0].count = fcmd->cmdlen; | |
455 | request->type = SOC_CQTYPE_OUTBOUND; | |
456 | request->shdr.bytecnt = fcmd->cmdlen; | |
457 | request->shdr.segcnt = 1; | |
458 | break; | |
459 | case FC_CLASS_INBOUND: | |
460 | request->data[0].base = fcmd->rsp; | |
461 | request->data[0].count = fcmd->rsplen; | |
462 | request->type = SOC_CQTYPE_INBOUND; | |
463 | request->shdr.bytecnt = 0; | |
464 | request->shdr.segcnt = 1; | |
465 | break; | |
466 | case FC_CLASS_SIMPLE: | |
467 | request->data[0].base = fcmd->cmd; | |
468 | request->data[1].base = fcmd->rsp; | |
469 | request->data[0].count = fcmd->cmdlen; | |
470 | request->data[1].count = fcmd->rsplen; | |
471 | request->type = SOC_CQTYPE_SIMPLE; | |
472 | request->shdr.bytecnt = fcmd->cmdlen; | |
473 | request->shdr.segcnt = 2; | |
474 | break; | |
475 | case FC_CLASS_IO_READ: | |
476 | case FC_CLASS_IO_WRITE: | |
477 | request->data[0].base = fcmd->cmd; | |
478 | request->data[1].base = fcmd->rsp; | |
479 | request->data[0].count = fcmd->cmdlen; | |
480 | request->data[1].count = fcmd->rsplen; | |
481 | request->type = | |
482 | (fcmd->class == FC_CLASS_IO_READ) ? | |
483 | SOC_CQTYPE_IO_READ : SOC_CQTYPE_IO_WRITE; | |
484 | if (fcmd->data) { | |
485 | request->data[2].base = fcmd->data; | |
486 | request->data[2].count = fcmd->datalen; | |
487 | request->shdr.bytecnt = fcmd->datalen; | |
488 | request->shdr.segcnt = 3; | |
489 | } else { | |
490 | request->shdr.bytecnt = 0; | |
491 | request->shdr.segcnt = 2; | |
492 | } | |
493 | break; | |
494 | }; | |
495 | break; | |
496 | }; | |
497 | ||
498 | request->count = 1; | |
499 | request->flags = 0; | |
500 | request->seqno = sw_cq->seqno; | |
501 | ||
502 | /* And now tell the SOC about it */ | |
503 | ||
504 | if (++sw_cq->in > sw_cq->last) { | |
505 | sw_cq->in = 0; | |
506 | sw_cq->seqno++; | |
507 | } | |
508 | ||
509 | SOD(("Putting %08x into cmd\n", | |
510 | SOC_CMD_RSP_QALL | (sw_cq->in << 24) | (SOC_CMD_REQ_Q0 << qno))) | |
511 | ||
512 | sbus_writel(SOC_CMD_RSP_QALL | (sw_cq->in << 24) | (SOC_CMD_REQ_Q0 << qno), | |
513 | s->regs + CMD); | |
514 | ||
515 | /* Read so that command is completed. */ | |
516 | sbus_readl(s->regs + CMD); | |
517 | ||
518 | return 0; | |
519 | } | |
520 | ||
521 | static inline void soc_download_fw(struct soc *s) | |
522 | { | |
523 | #ifdef HAVE_SOC_UCODE | |
524 | xram_copy_to (s->xram, soc_ucode, sizeof(soc_ucode)); | |
525 | xram_bzero (s->xram + sizeof(soc_ucode), 32768 - sizeof(soc_ucode)); | |
526 | #endif | |
527 | } | |
528 | ||
529 | /* Check for what the best SBUS burst we can use happens | |
530 | * to be on this machine. | |
531 | */ | |
532 | static inline void soc_init_bursts(struct soc *s, struct sbus_dev *sdev) | |
533 | { | |
534 | int bsizes, bsizes_more; | |
535 | ||
536 | bsizes = (prom_getintdefault(sdev->prom_node,"burst-sizes",0xff) & 0xff); | |
537 | bsizes_more = (prom_getintdefault(sdev->bus->prom_node, "burst-sizes", 0xff) & 0xff); | |
538 | bsizes &= bsizes_more; | |
539 | if ((bsizes & 0x7f) == 0x7f) | |
540 | s->cfg = SOC_CFG_BURST_64; | |
541 | else if ((bsizes & 0x3f) == 0x3f) | |
542 | s->cfg = SOC_CFG_BURST_32; | |
543 | else if ((bsizes & 0x1f) == 0x1f) | |
544 | s->cfg = SOC_CFG_BURST_16; | |
545 | else | |
546 | s->cfg = SOC_CFG_BURST_4; | |
547 | } | |
548 | ||
549 | static inline void soc_init(struct sbus_dev *sdev, int no) | |
550 | { | |
551 | unsigned char tmp[60]; | |
552 | int propl; | |
553 | struct soc *s; | |
554 | static int version_printed = 0; | |
555 | soc_hw_cq cq[8]; | |
556 | int size, i; | |
557 | int irq; | |
558 | ||
49d0c603 | 559 | s = kzalloc (sizeof (struct soc), GFP_KERNEL); |
1da177e4 LT |
560 | if (s == NULL) |
561 | return; | |
1da177e4 LT |
562 | spin_lock_init(&s->lock); |
563 | s->soc_no = no; | |
564 | ||
565 | SOD(("socs %08lx soc_intr %08lx soc_hw_enque %08x\n", | |
566 | (long)socs, (long)soc_intr, (long)soc_hw_enque)) | |
567 | if (version_printed++ == 0) | |
568 | printk (version); | |
569 | ||
570 | s->port[0].fc.module = THIS_MODULE; | |
571 | s->port[1].fc.module = THIS_MODULE; | |
572 | ||
573 | s->next = socs; | |
574 | socs = s; | |
575 | s->port[0].fc.dev = sdev; | |
576 | s->port[1].fc.dev = sdev; | |
577 | s->port[0].s = s; | |
578 | s->port[1].s = s; | |
579 | ||
580 | s->port[0].fc.next = &s->port[1].fc; | |
581 | ||
582 | /* World Wide Name of SOC */ | |
583 | propl = prom_getproperty (sdev->prom_node, "soc-wwn", tmp, sizeof(tmp)); | |
584 | if (propl != sizeof (fc_wwn)) { | |
585 | s->wwn.naaid = NAAID_IEEE; | |
586 | s->wwn.lo = 0x12345678; | |
587 | } else | |
588 | memcpy (&s->wwn, tmp, sizeof (fc_wwn)); | |
589 | ||
590 | propl = prom_getproperty (sdev->prom_node, "port-wwns", tmp, sizeof(tmp)); | |
591 | if (propl != 2 * sizeof (fc_wwn)) { | |
592 | s->port[0].fc.wwn_nport.naaid = NAAID_IEEE_EXT; | |
593 | s->port[0].fc.wwn_nport.hi = s->wwn.hi; | |
594 | s->port[0].fc.wwn_nport.lo = s->wwn.lo; | |
595 | s->port[1].fc.wwn_nport.naaid = NAAID_IEEE_EXT; | |
596 | s->port[1].fc.wwn_nport.nportid = 1; | |
597 | s->port[1].fc.wwn_nport.hi = s->wwn.hi; | |
598 | s->port[1].fc.wwn_nport.lo = s->wwn.lo; | |
599 | } else { | |
600 | memcpy (&s->port[0].fc.wwn_nport, tmp, sizeof (fc_wwn)); | |
601 | memcpy (&s->port[1].fc.wwn_nport, tmp + sizeof (fc_wwn), sizeof (fc_wwn)); | |
602 | } | |
603 | memcpy (&s->port[0].fc.wwn_node, &s->wwn, sizeof (fc_wwn)); | |
604 | memcpy (&s->port[1].fc.wwn_node, &s->wwn, sizeof (fc_wwn)); | |
605 | SOD(("Got wwns %08x%08x ports %08x%08x and %08x%08x\n", | |
606 | *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo, | |
607 | *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo, | |
608 | *(u32 *)&s->port[1].fc.wwn_nport, s->port[1].fc.wwn_nport.lo)) | |
609 | ||
610 | s->port[0].fc.sid = 1; | |
611 | s->port[1].fc.sid = 17; | |
612 | s->port[0].fc.did = 2; | |
613 | s->port[1].fc.did = 18; | |
614 | ||
615 | s->port[0].fc.reset = soc_reset; | |
616 | s->port[1].fc.reset = soc_reset; | |
617 | ||
618 | if (sdev->num_registers == 1) { | |
619 | /* Probably SunFire onboard SOC */ | |
620 | s->xram = sbus_ioremap(&sdev->resource[0], 0, | |
621 | 0x10000UL, "soc xram"); | |
622 | s->regs = sbus_ioremap(&sdev->resource[0], 0x10000UL, | |
623 | 0x10UL, "soc regs"); | |
624 | } else { | |
625 | /* Probably SOC sbus card */ | |
626 | s->xram = sbus_ioremap(&sdev->resource[1], 0, | |
627 | sdev->reg_addrs[1].reg_size, "soc xram"); | |
628 | s->regs = sbus_ioremap(&sdev->resource[2], 0, | |
629 | sdev->reg_addrs[2].reg_size, "soc regs"); | |
630 | } | |
631 | ||
632 | soc_init_bursts(s, sdev); | |
633 | ||
634 | SOD(("Disabling SOC\n")) | |
635 | ||
636 | soc_disable (s); | |
637 | ||
638 | irq = sdev->irqs[0]; | |
639 | ||
dace1453 | 640 | if (request_irq (irq, soc_intr, IRQF_SHARED, "SOC", (void *)s)) { |
1da177e4 LT |
641 | soc_printk ("Cannot order irq %d to go\n", irq); |
642 | socs = s->next; | |
643 | return; | |
644 | } | |
645 | ||
c6387a48 | 646 | SOD(("SOC uses IRQ %d\n", irq)) |
1da177e4 LT |
647 | |
648 | s->port[0].fc.irq = irq; | |
649 | s->port[1].fc.irq = irq; | |
650 | ||
651 | sprintf (s->port[0].fc.name, "soc%d port A", no); | |
652 | sprintf (s->port[1].fc.name, "soc%d port B", no); | |
653 | s->port[0].flags = SOC_FC_HDR | SOC_PORT_A; | |
654 | s->port[1].flags = SOC_FC_HDR | SOC_PORT_B; | |
655 | s->port[1].mask = (1 << 11); | |
656 | ||
657 | s->port[0].fc.hw_enque = soc_hw_enque; | |
658 | s->port[1].fc.hw_enque = soc_hw_enque; | |
659 | ||
660 | soc_download_fw (s); | |
661 | ||
662 | SOD(("Downloaded firmware\n")) | |
663 | ||
664 | /* Now setup xram circular queues */ | |
665 | memset (cq, 0, sizeof(cq)); | |
666 | ||
667 | size = (SOC_CQ_REQ0_SIZE + SOC_CQ_REQ1_SIZE) * sizeof(soc_req); | |
668 | s->req_cpu = sbus_alloc_consistent(sdev, size, &s->req_dvma); | |
669 | s->req[0].pool = s->req_cpu; | |
670 | cq[0].address = s->req_dvma; | |
671 | s->req[1].pool = s->req[0].pool + SOC_CQ_REQ0_SIZE; | |
672 | ||
673 | s->req[0].hw_cq = (soc_hw_cq __iomem *)(s->xram + SOC_CQ_REQ_OFFSET); | |
674 | s->req[1].hw_cq = (soc_hw_cq __iomem *)(s->xram + SOC_CQ_REQ_OFFSET + sizeof(soc_hw_cq)); | |
675 | s->rsp[0].hw_cq = (soc_hw_cq __iomem *)(s->xram + SOC_CQ_RSP_OFFSET); | |
676 | s->rsp[1].hw_cq = (soc_hw_cq __iomem *)(s->xram + SOC_CQ_RSP_OFFSET + sizeof(soc_hw_cq)); | |
677 | ||
678 | cq[1].address = cq[0].address + (SOC_CQ_REQ0_SIZE * sizeof(soc_req)); | |
679 | cq[4].address = 1; | |
680 | cq[5].address = 1; | |
681 | cq[0].last = SOC_CQ_REQ0_SIZE - 1; | |
682 | cq[1].last = SOC_CQ_REQ1_SIZE - 1; | |
683 | cq[4].last = SOC_CQ_RSP0_SIZE - 1; | |
684 | cq[5].last = SOC_CQ_RSP1_SIZE - 1; | |
685 | for (i = 0; i < 8; i++) | |
686 | cq[i].seqno = 1; | |
687 | ||
688 | s->req[0].last = SOC_CQ_REQ0_SIZE - 1; | |
689 | s->req[1].last = SOC_CQ_REQ1_SIZE - 1; | |
690 | s->rsp[0].last = SOC_CQ_RSP0_SIZE - 1; | |
691 | s->rsp[1].last = SOC_CQ_RSP1_SIZE - 1; | |
692 | ||
693 | s->req[0].seqno = 1; | |
694 | s->req[1].seqno = 1; | |
695 | s->rsp[0].seqno = 1; | |
696 | s->rsp[1].seqno = 1; | |
697 | ||
698 | xram_copy_to (s->xram + SOC_CQ_REQ_OFFSET, cq, sizeof(cq)); | |
699 | ||
700 | /* Make our sw copy of SOC service parameters */ | |
701 | xram_copy_from (s->serv_params, s->xram + 0x140, sizeof (s->serv_params)); | |
702 | ||
703 | s->port[0].fc.common_svc = (common_svc_parm *)s->serv_params; | |
704 | s->port[0].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20); | |
705 | s->port[1].fc.common_svc = (common_svc_parm *)&s->serv_params; | |
706 | s->port[1].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20); | |
707 | ||
708 | soc_enable (s); | |
709 | ||
710 | SOD(("Enabled SOC\n")) | |
711 | } | |
712 | ||
713 | static int __init soc_probe(void) | |
714 | { | |
715 | struct sbus_bus *sbus; | |
716 | struct sbus_dev *sdev = NULL; | |
717 | struct soc *s; | |
718 | int cards = 0; | |
719 | ||
720 | for_each_sbus(sbus) { | |
721 | for_each_sbusdev(sdev, sbus) { | |
722 | if(!strcmp(sdev->prom_name, "SUNW,soc")) { | |
723 | soc_init(sdev, cards); | |
724 | cards++; | |
725 | } | |
726 | } | |
727 | } | |
728 | if (!cards) return -EIO; | |
729 | ||
730 | for_each_soc(s) | |
731 | if (s->next) | |
732 | s->port[1].fc.next = &s->next->port[0].fc; | |
733 | fcp_init (&socs->port[0].fc); | |
734 | return 0; | |
735 | } | |
736 | ||
737 | static void __exit soc_cleanup(void) | |
738 | { | |
739 | struct soc *s; | |
740 | int irq; | |
741 | struct sbus_dev *sdev; | |
742 | ||
743 | for_each_soc(s) { | |
744 | irq = s->port[0].fc.irq; | |
745 | free_irq (irq, s); | |
746 | ||
747 | fcp_release(&(s->port[0].fc), 2); | |
748 | ||
749 | sdev = s->port[0].fc.dev; | |
750 | if (sdev->num_registers == 1) { | |
751 | sbus_iounmap(s->xram, 0x10000UL); | |
752 | sbus_iounmap(s->regs, 0x10UL); | |
753 | } else { | |
754 | sbus_iounmap(s->xram, sdev->reg_addrs[1].reg_size); | |
755 | sbus_iounmap(s->regs, sdev->reg_addrs[2].reg_size); | |
756 | } | |
757 | sbus_free_consistent(sdev, | |
758 | (SOC_CQ_REQ0_SIZE+SOC_CQ_REQ1_SIZE)*sizeof(soc_req), | |
759 | s->req_cpu, s->req_dvma); | |
760 | } | |
761 | } | |
762 | ||
763 | module_init(soc_probe); | |
764 | module_exit(soc_cleanup); | |
765 | MODULE_LICENSE("GPL"); |