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1da177e4 LT |
1 | /* |
2 | * sata_sx4.c - Promise SATA | |
3 | * | |
4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> | |
5 | * Please ALWAYS copy linux-ide@vger.kernel.org | |
6 | * on emails. | |
7 | * | |
8 | * Copyright 2003-2004 Red Hat, Inc. | |
9 | * | |
af36d7f0 JG |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2, or (at your option) | |
14 | * any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; see the file COPYING. If not, write to | |
23 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | * | |
25 | * | |
26 | * libata documentation is available via 'make {ps|pdf}docs', | |
27 | * as Documentation/DocBook/libata.* | |
28 | * | |
29 | * Hardware documentation available under NDA. | |
1da177e4 LT |
30 | * |
31 | */ | |
32 | ||
a09060ff JG |
33 | /* |
34 | Theory of operation | |
35 | ------------------- | |
36 | ||
37 | The SX4 (PDC20621) chip features a single Host DMA (HDMA) copy | |
38 | engine, DIMM memory, and four ATA engines (one per SATA port). | |
39 | Data is copied to/from DIMM memory by the HDMA engine, before | |
40 | handing off to one (or more) of the ATA engines. The ATA | |
41 | engines operate solely on DIMM memory. | |
42 | ||
43 | The SX4 behaves like a PATA chip, with no SATA controls or | |
44 | knowledge whatsoever, leading to the presumption that | |
45 | PATA<->SATA bridges exist on SX4 boards, external to the | |
46 | PDC20621 chip itself. | |
47 | ||
48 | The chip is quite capable, supporting an XOR engine and linked | |
49 | hardware commands (permits a string to transactions to be | |
50 | submitted and waited-on as a single unit), and an optional | |
51 | microprocessor. | |
52 | ||
53 | The limiting factor is largely software. This Linux driver was | |
54 | written to multiplex the single HDMA engine to copy disk | |
55 | transactions into a fixed DIMM memory space, from where an ATA | |
56 | engine takes over. As a result, each WRITE looks like this: | |
57 | ||
58 | submit HDMA packet to hardware | |
59 | hardware copies data from system memory to DIMM | |
60 | hardware raises interrupt | |
61 | ||
62 | submit ATA packet to hardware | |
63 | hardware executes ATA WRITE command, w/ data in DIMM | |
64 | hardware raises interrupt | |
2dcb407e | 65 | |
a09060ff JG |
66 | and each READ looks like this: |
67 | ||
68 | submit ATA packet to hardware | |
69 | hardware executes ATA READ command, w/ data in DIMM | |
70 | hardware raises interrupt | |
2dcb407e | 71 | |
a09060ff JG |
72 | submit HDMA packet to hardware |
73 | hardware copies data from DIMM to system memory | |
74 | hardware raises interrupt | |
75 | ||
76 | This is a very slow, lock-step way of doing things that can | |
77 | certainly be improved by motivated kernel hackers. | |
78 | ||
79 | */ | |
80 | ||
1da177e4 LT |
81 | #include <linux/kernel.h> |
82 | #include <linux/module.h> | |
83 | #include <linux/pci.h> | |
84 | #include <linux/init.h> | |
85 | #include <linux/blkdev.h> | |
86 | #include <linux/delay.h> | |
87 | #include <linux/interrupt.h> | |
a9524a76 | 88 | #include <linux/device.h> |
1da177e4 | 89 | #include <scsi/scsi_host.h> |
193515d5 | 90 | #include <scsi/scsi_cmnd.h> |
1da177e4 | 91 | #include <linux/libata.h> |
1da177e4 LT |
92 | #include "sata_promise.h" |
93 | ||
94 | #define DRV_NAME "sata_sx4" | |
2a3103ce | 95 | #define DRV_VERSION "0.12" |
1da177e4 LT |
96 | |
97 | ||
98 | enum { | |
0d5ff566 TH |
99 | PDC_MMIO_BAR = 3, |
100 | PDC_DIMM_BAR = 4, | |
101 | ||
1da177e4 LT |
102 | PDC_PRD_TBL = 0x44, /* Direct command DMA table addr */ |
103 | ||
104 | PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */ | |
105 | PDC_HDMA_PKT_SUBMIT = 0x100, /* Host DMA packet pointer addr */ | |
106 | PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */ | |
107 | PDC_HDMA_CTLSTAT = 0x12C, /* Host DMA control / status */ | |
108 | ||
a09060ff JG |
109 | PDC_CTLSTAT = 0x60, /* IDEn control / status */ |
110 | ||
1da177e4 LT |
111 | PDC_20621_SEQCTL = 0x400, |
112 | PDC_20621_SEQMASK = 0x480, | |
113 | PDC_20621_GENERAL_CTL = 0x484, | |
114 | PDC_20621_PAGE_SIZE = (32 * 1024), | |
115 | ||
116 | /* chosen, not constant, values; we design our own DIMM mem map */ | |
117 | PDC_20621_DIMM_WINDOW = 0x0C, /* page# for 32K DIMM window */ | |
118 | PDC_20621_DIMM_BASE = 0x00200000, | |
119 | PDC_20621_DIMM_DATA = (64 * 1024), | |
120 | PDC_DIMM_DATA_STEP = (256 * 1024), | |
121 | PDC_DIMM_WINDOW_STEP = (8 * 1024), | |
122 | PDC_DIMM_HOST_PRD = (6 * 1024), | |
123 | PDC_DIMM_HOST_PKT = (128 * 0), | |
124 | PDC_DIMM_HPKT_PRD = (128 * 1), | |
125 | PDC_DIMM_ATA_PKT = (128 * 2), | |
126 | PDC_DIMM_APKT_PRD = (128 * 3), | |
127 | PDC_DIMM_HEADER_SZ = PDC_DIMM_APKT_PRD + 128, | |
128 | PDC_PAGE_WINDOW = 0x40, | |
129 | PDC_PAGE_DATA = PDC_PAGE_WINDOW + | |
130 | (PDC_20621_DIMM_DATA / PDC_20621_PAGE_SIZE), | |
131 | PDC_PAGE_SET = PDC_DIMM_DATA_STEP / PDC_20621_PAGE_SIZE, | |
132 | ||
133 | PDC_CHIP0_OFS = 0xC0000, /* offset of chip #0 */ | |
134 | ||
135 | PDC_20621_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) | | |
136 | (1<<23), | |
137 | ||
138 | board_20621 = 0, /* FastTrak S150 SX4 */ | |
139 | ||
b2d46b61 JG |
140 | PDC_MASK_INT = (1 << 10), /* HDMA/ATA mask int */ |
141 | PDC_RESET = (1 << 11), /* HDMA/ATA reset */ | |
a09060ff | 142 | PDC_DMA_ENABLE = (1 << 7), /* DMA start/stop */ |
1da177e4 LT |
143 | |
144 | PDC_MAX_HDMA = 32, | |
145 | PDC_HDMA_Q_MASK = (PDC_MAX_HDMA - 1), | |
146 | ||
b2d46b61 JG |
147 | PDC_DIMM0_SPD_DEV_ADDRESS = 0x50, |
148 | PDC_DIMM1_SPD_DEV_ADDRESS = 0x51, | |
149 | PDC_I2C_CONTROL = 0x48, | |
150 | PDC_I2C_ADDR_DATA = 0x4C, | |
151 | PDC_DIMM0_CONTROL = 0x80, | |
152 | PDC_DIMM1_CONTROL = 0x84, | |
153 | PDC_SDRAM_CONTROL = 0x88, | |
154 | PDC_I2C_WRITE = 0, /* master -> slave */ | |
155 | PDC_I2C_READ = (1 << 6), /* master <- slave */ | |
156 | PDC_I2C_START = (1 << 7), /* start I2C proto */ | |
157 | PDC_I2C_MASK_INT = (1 << 5), /* mask I2C interrupt */ | |
158 | PDC_I2C_COMPLETE = (1 << 16), /* I2C normal compl. */ | |
159 | PDC_I2C_NO_ACK = (1 << 20), /* slave no-ack addr */ | |
160 | PDC_DIMM_SPD_SUBADDRESS_START = 0x00, | |
161 | PDC_DIMM_SPD_SUBADDRESS_END = 0x7F, | |
162 | PDC_DIMM_SPD_ROW_NUM = 3, | |
163 | PDC_DIMM_SPD_COLUMN_NUM = 4, | |
164 | PDC_DIMM_SPD_MODULE_ROW = 5, | |
165 | PDC_DIMM_SPD_TYPE = 11, | |
166 | PDC_DIMM_SPD_FRESH_RATE = 12, | |
167 | PDC_DIMM_SPD_BANK_NUM = 17, | |
168 | PDC_DIMM_SPD_CAS_LATENCY = 18, | |
169 | PDC_DIMM_SPD_ATTRIBUTE = 21, | |
170 | PDC_DIMM_SPD_ROW_PRE_CHARGE = 27, | |
171 | PDC_DIMM_SPD_ROW_ACTIVE_DELAY = 28, | |
172 | PDC_DIMM_SPD_RAS_CAS_DELAY = 29, | |
173 | PDC_DIMM_SPD_ACTIVE_PRECHARGE = 30, | |
174 | PDC_DIMM_SPD_SYSTEM_FREQ = 126, | |
175 | PDC_CTL_STATUS = 0x08, | |
176 | PDC_DIMM_WINDOW_CTLR = 0x0C, | |
177 | PDC_TIME_CONTROL = 0x3C, | |
178 | PDC_TIME_PERIOD = 0x40, | |
179 | PDC_TIME_COUNTER = 0x44, | |
180 | PDC_GENERAL_CTLR = 0x484, | |
181 | PCI_PLL_INIT = 0x8A531824, | |
182 | PCI_X_TCOUNT = 0xEE1E5CFF, | |
183 | ||
184 | /* PDC_TIME_CONTROL bits */ | |
185 | PDC_TIMER_BUZZER = (1 << 10), | |
186 | PDC_TIMER_MODE_PERIODIC = 0, /* bits 9:8 == 00 */ | |
187 | PDC_TIMER_MODE_ONCE = (1 << 8), /* bits 9:8 == 01 */ | |
188 | PDC_TIMER_ENABLE = (1 << 7), | |
189 | PDC_TIMER_MASK_INT = (1 << 5), | |
190 | PDC_TIMER_SEQ_MASK = 0x1f, /* SEQ ID for timer */ | |
191 | PDC_TIMER_DEFAULT = PDC_TIMER_MODE_ONCE | | |
192 | PDC_TIMER_ENABLE | | |
193 | PDC_TIMER_MASK_INT, | |
1da177e4 LT |
194 | }; |
195 | ||
196 | ||
197 | struct pdc_port_priv { | |
198 | u8 dimm_buf[(ATA_PRD_SZ * ATA_MAX_PRD) + 512]; | |
199 | u8 *pkt; | |
200 | dma_addr_t pkt_dma; | |
201 | }; | |
202 | ||
203 | struct pdc_host_priv { | |
1da177e4 LT |
204 | unsigned int doing_hdma; |
205 | unsigned int hdma_prod; | |
206 | unsigned int hdma_cons; | |
207 | struct { | |
208 | struct ata_queued_cmd *qc; | |
209 | unsigned int seq; | |
210 | unsigned long pkt_ofs; | |
211 | } hdma[32]; | |
212 | }; | |
213 | ||
214 | ||
5796d1c4 | 215 | static int pdc_sata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); |
67651ee5 JG |
216 | static void pdc_error_handler(struct ata_port *ap); |
217 | static void pdc_freeze(struct ata_port *ap); | |
218 | static void pdc_thaw(struct ata_port *ap); | |
1da177e4 | 219 | static int pdc_port_start(struct ata_port *ap); |
1da177e4 | 220 | static void pdc20621_qc_prep(struct ata_queued_cmd *qc); |
057ace5e JG |
221 | static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf); |
222 | static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf); | |
4447d351 TH |
223 | static unsigned int pdc20621_dimm_init(struct ata_host *host); |
224 | static int pdc20621_detect_dimm(struct ata_host *host); | |
225 | static unsigned int pdc20621_i2c_read(struct ata_host *host, | |
1da177e4 | 226 | u32 device, u32 subaddr, u32 *pdata); |
4447d351 TH |
227 | static int pdc20621_prog_dimm0(struct ata_host *host); |
228 | static unsigned int pdc20621_prog_dimm_global(struct ata_host *host); | |
1da177e4 | 229 | #ifdef ATA_VERBOSE_DEBUG |
4447d351 | 230 | static void pdc20621_get_from_dimm(struct ata_host *host, |
1da177e4 LT |
231 | void *psource, u32 offset, u32 size); |
232 | #endif | |
4447d351 | 233 | static void pdc20621_put_to_dimm(struct ata_host *host, |
1da177e4 LT |
234 | void *psource, u32 offset, u32 size); |
235 | static void pdc20621_irq_clear(struct ata_port *ap); | |
9363c382 | 236 | static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc); |
67651ee5 JG |
237 | static int pdc_softreset(struct ata_link *link, unsigned int *class, |
238 | unsigned long deadline); | |
239 | static void pdc_post_internal_cmd(struct ata_queued_cmd *qc); | |
240 | static int pdc_check_atapi_dma(struct ata_queued_cmd *qc); | |
1da177e4 LT |
241 | |
242 | ||
193515d5 | 243 | static struct scsi_host_template pdc_sata_sht = { |
68d1d07b | 244 | ATA_BASE_SHT(DRV_NAME), |
1da177e4 | 245 | .sg_tablesize = LIBATA_MAX_PRD, |
1da177e4 | 246 | .dma_boundary = ATA_DMA_BOUNDARY, |
1da177e4 LT |
247 | }; |
248 | ||
029cfd6b TH |
249 | /* TODO: inherit from base port_ops after converting to new EH */ |
250 | static struct ata_port_operations pdc_20621_ops = { | |
67651ee5 JG |
251 | .inherits = &ata_sff_port_ops, |
252 | ||
253 | .check_atapi_dma = pdc_check_atapi_dma, | |
1da177e4 | 254 | .qc_prep = pdc20621_qc_prep, |
9363c382 | 255 | .qc_issue = pdc20621_qc_issue, |
67651ee5 JG |
256 | |
257 | .freeze = pdc_freeze, | |
258 | .thaw = pdc_thaw, | |
259 | .softreset = pdc_softreset, | |
260 | .error_handler = pdc_error_handler, | |
261 | .lost_interrupt = ATA_OP_NULL, | |
262 | .post_internal_cmd = pdc_post_internal_cmd, | |
263 | ||
1da177e4 | 264 | .port_start = pdc_port_start, |
67651ee5 JG |
265 | |
266 | .sff_tf_load = pdc_tf_load_mmio, | |
267 | .sff_exec_command = pdc_exec_command_mmio, | |
268 | .sff_irq_clear = pdc20621_irq_clear, | |
1da177e4 LT |
269 | }; |
270 | ||
98ac62de | 271 | static const struct ata_port_info pdc_port_info[] = { |
1da177e4 LT |
272 | /* board_20621 */ |
273 | { | |
cca3974e | 274 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
50630195 | 275 | ATA_FLAG_SRST | ATA_FLAG_MMIO | |
1f3461a7 | 276 | ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING, |
14bdef98 EIB |
277 | .pio_mask = ATA_PIO4, |
278 | .mwdma_mask = ATA_MWDMA2, | |
469248ab | 279 | .udma_mask = ATA_UDMA6, |
1da177e4 LT |
280 | .port_ops = &pdc_20621_ops, |
281 | }, | |
282 | ||
283 | }; | |
284 | ||
3b7d697d | 285 | static const struct pci_device_id pdc_sata_pci_tbl[] = { |
54bb3a94 JG |
286 | { PCI_VDEVICE(PROMISE, 0x6622), board_20621 }, |
287 | ||
1da177e4 LT |
288 | { } /* terminate list */ |
289 | }; | |
290 | ||
1da177e4 LT |
291 | static struct pci_driver pdc_sata_pci_driver = { |
292 | .name = DRV_NAME, | |
293 | .id_table = pdc_sata_pci_tbl, | |
294 | .probe = pdc_sata_init_one, | |
295 | .remove = ata_pci_remove_one, | |
296 | }; | |
297 | ||
298 | ||
1da177e4 LT |
299 | static int pdc_port_start(struct ata_port *ap) |
300 | { | |
cca3974e | 301 | struct device *dev = ap->host->dev; |
1da177e4 LT |
302 | struct pdc_port_priv *pp; |
303 | int rc; | |
304 | ||
305 | rc = ata_port_start(ap); | |
306 | if (rc) | |
307 | return rc; | |
308 | ||
24dc5f33 TH |
309 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
310 | if (!pp) | |
311 | return -ENOMEM; | |
1da177e4 | 312 | |
24dc5f33 TH |
313 | pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL); |
314 | if (!pp->pkt) | |
315 | return -ENOMEM; | |
1da177e4 LT |
316 | |
317 | ap->private_data = pp; | |
318 | ||
319 | return 0; | |
1da177e4 LT |
320 | } |
321 | ||
1da177e4 | 322 | static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf, |
5796d1c4 | 323 | unsigned int portno, |
1da177e4 LT |
324 | unsigned int total_len) |
325 | { | |
326 | u32 addr; | |
327 | unsigned int dw = PDC_DIMM_APKT_PRD >> 2; | |
4ca4e439 | 328 | __le32 *buf32 = (__le32 *) buf; |
1da177e4 LT |
329 | |
330 | /* output ATA packet S/G table */ | |
331 | addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA + | |
332 | (PDC_DIMM_DATA_STEP * portno); | |
333 | VPRINTK("ATA sg addr 0x%x, %d\n", addr, addr); | |
334 | buf32[dw] = cpu_to_le32(addr); | |
335 | buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT); | |
336 | ||
337 | VPRINTK("ATA PSG @ %x == (0x%x, 0x%x)\n", | |
338 | PDC_20621_DIMM_BASE + | |
339 | (PDC_DIMM_WINDOW_STEP * portno) + | |
340 | PDC_DIMM_APKT_PRD, | |
341 | buf32[dw], buf32[dw + 1]); | |
342 | } | |
343 | ||
344 | static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf, | |
5796d1c4 | 345 | unsigned int portno, |
1da177e4 LT |
346 | unsigned int total_len) |
347 | { | |
348 | u32 addr; | |
349 | unsigned int dw = PDC_DIMM_HPKT_PRD >> 2; | |
4ca4e439 | 350 | __le32 *buf32 = (__le32 *) buf; |
1da177e4 LT |
351 | |
352 | /* output Host DMA packet S/G table */ | |
353 | addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA + | |
354 | (PDC_DIMM_DATA_STEP * portno); | |
355 | ||
356 | buf32[dw] = cpu_to_le32(addr); | |
357 | buf32[dw + 1] = cpu_to_le32(total_len | ATA_PRD_EOT); | |
358 | ||
359 | VPRINTK("HOST PSG @ %x == (0x%x, 0x%x)\n", | |
360 | PDC_20621_DIMM_BASE + | |
361 | (PDC_DIMM_WINDOW_STEP * portno) + | |
362 | PDC_DIMM_HPKT_PRD, | |
363 | buf32[dw], buf32[dw + 1]); | |
364 | } | |
365 | ||
366 | static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf, | |
367 | unsigned int devno, u8 *buf, | |
368 | unsigned int portno) | |
369 | { | |
370 | unsigned int i, dw; | |
4ca4e439 | 371 | __le32 *buf32 = (__le32 *) buf; |
1da177e4 LT |
372 | u8 dev_reg; |
373 | ||
374 | unsigned int dimm_sg = PDC_20621_DIMM_BASE + | |
375 | (PDC_DIMM_WINDOW_STEP * portno) + | |
376 | PDC_DIMM_APKT_PRD; | |
377 | VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg); | |
378 | ||
379 | i = PDC_DIMM_ATA_PKT; | |
380 | ||
381 | /* | |
382 | * Set up ATA packet | |
383 | */ | |
384 | if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE))) | |
385 | buf[i++] = PDC_PKT_READ; | |
386 | else if (tf->protocol == ATA_PROT_NODATA) | |
387 | buf[i++] = PDC_PKT_NODATA; | |
388 | else | |
389 | buf[i++] = 0; | |
390 | buf[i++] = 0; /* reserved */ | |
391 | buf[i++] = portno + 1; /* seq. id */ | |
392 | buf[i++] = 0xff; /* delay seq. id */ | |
393 | ||
394 | /* dimm dma S/G, and next-pkt */ | |
395 | dw = i >> 2; | |
396 | if (tf->protocol == ATA_PROT_NODATA) | |
397 | buf32[dw] = 0; | |
398 | else | |
399 | buf32[dw] = cpu_to_le32(dimm_sg); | |
400 | buf32[dw + 1] = 0; | |
401 | i += 8; | |
402 | ||
403 | if (devno == 0) | |
404 | dev_reg = ATA_DEVICE_OBS; | |
405 | else | |
406 | dev_reg = ATA_DEVICE_OBS | ATA_DEV1; | |
407 | ||
408 | /* select device */ | |
409 | buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE; | |
410 | buf[i++] = dev_reg; | |
411 | ||
412 | /* device control register */ | |
413 | buf[i++] = (1 << 5) | PDC_REG_DEVCTL; | |
414 | buf[i++] = tf->ctl; | |
415 | ||
416 | return i; | |
417 | } | |
418 | ||
419 | static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf, | |
420 | unsigned int portno) | |
421 | { | |
422 | unsigned int dw; | |
4ca4e439 AV |
423 | u32 tmp; |
424 | __le32 *buf32 = (__le32 *) buf; | |
1da177e4 LT |
425 | |
426 | unsigned int host_sg = PDC_20621_DIMM_BASE + | |
427 | (PDC_DIMM_WINDOW_STEP * portno) + | |
428 | PDC_DIMM_HOST_PRD; | |
429 | unsigned int dimm_sg = PDC_20621_DIMM_BASE + | |
430 | (PDC_DIMM_WINDOW_STEP * portno) + | |
431 | PDC_DIMM_HPKT_PRD; | |
432 | VPRINTK("ENTER, dimm_sg == 0x%x, %d\n", dimm_sg, dimm_sg); | |
433 | VPRINTK("host_sg == 0x%x, %d\n", host_sg, host_sg); | |
434 | ||
435 | dw = PDC_DIMM_HOST_PKT >> 2; | |
436 | ||
437 | /* | |
438 | * Set up Host DMA packet | |
439 | */ | |
440 | if ((tf->protocol == ATA_PROT_DMA) && (!(tf->flags & ATA_TFLAG_WRITE))) | |
441 | tmp = PDC_PKT_READ; | |
442 | else | |
443 | tmp = 0; | |
444 | tmp |= ((portno + 1 + 4) << 16); /* seq. id */ | |
445 | tmp |= (0xff << 24); /* delay seq. id */ | |
446 | buf32[dw + 0] = cpu_to_le32(tmp); | |
447 | buf32[dw + 1] = cpu_to_le32(host_sg); | |
448 | buf32[dw + 2] = cpu_to_le32(dimm_sg); | |
449 | buf32[dw + 3] = 0; | |
450 | ||
451 | VPRINTK("HOST PKT @ %x == (0x%x 0x%x 0x%x 0x%x)\n", | |
452 | PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) + | |
453 | PDC_DIMM_HOST_PKT, | |
454 | buf32[dw + 0], | |
455 | buf32[dw + 1], | |
456 | buf32[dw + 2], | |
457 | buf32[dw + 3]); | |
458 | } | |
459 | ||
460 | static void pdc20621_dma_prep(struct ata_queued_cmd *qc) | |
461 | { | |
cedc9a47 | 462 | struct scatterlist *sg; |
1da177e4 LT |
463 | struct ata_port *ap = qc->ap; |
464 | struct pdc_port_priv *pp = ap->private_data; | |
0d5ff566 TH |
465 | void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR]; |
466 | void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR]; | |
1da177e4 | 467 | unsigned int portno = ap->port_no; |
ff2aeb1e | 468 | unsigned int i, si, idx, total_len = 0, sgt_len; |
826cd156 | 469 | __le32 *buf = (__le32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ]; |
1da177e4 | 470 | |
beec7dbc | 471 | WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP)); |
1da177e4 | 472 | |
44877b4e | 473 | VPRINTK("ata%u: ENTER\n", ap->print_id); |
1da177e4 LT |
474 | |
475 | /* hard-code chip #0 */ | |
476 | mmio += PDC_CHIP0_OFS; | |
477 | ||
478 | /* | |
479 | * Build S/G table | |
480 | */ | |
1da177e4 | 481 | idx = 0; |
ff2aeb1e | 482 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
cedc9a47 JG |
483 | buf[idx++] = cpu_to_le32(sg_dma_address(sg)); |
484 | buf[idx++] = cpu_to_le32(sg_dma_len(sg)); | |
485 | total_len += sg_dma_len(sg); | |
1da177e4 LT |
486 | } |
487 | buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT); | |
488 | sgt_len = idx * 4; | |
489 | ||
490 | /* | |
491 | * Build ATA, host DMA packets | |
492 | */ | |
493 | pdc20621_host_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len); | |
494 | pdc20621_host_pkt(&qc->tf, &pp->dimm_buf[0], portno); | |
495 | ||
496 | pdc20621_ata_sg(&qc->tf, &pp->dimm_buf[0], portno, total_len); | |
497 | i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno); | |
498 | ||
499 | if (qc->tf.flags & ATA_TFLAG_LBA48) | |
500 | i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i); | |
501 | else | |
502 | i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i); | |
503 | ||
504 | pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i); | |
505 | ||
506 | /* copy three S/G tables and two packets to DIMM MMIO window */ | |
507 | memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP), | |
508 | &pp->dimm_buf, PDC_DIMM_HEADER_SZ); | |
509 | memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP) + | |
510 | PDC_DIMM_HOST_PRD, | |
511 | &pp->dimm_buf[PDC_DIMM_HEADER_SZ], sgt_len); | |
512 | ||
513 | /* force host FIFO dump */ | |
514 | writel(0x00000001, mmio + PDC_20621_GENERAL_CTL); | |
515 | ||
516 | readl(dimm_mmio); /* MMIO PCI posting flush */ | |
517 | ||
518 | VPRINTK("ata pkt buf ofs %u, prd size %u, mmio copied\n", i, sgt_len); | |
519 | } | |
520 | ||
521 | static void pdc20621_nodata_prep(struct ata_queued_cmd *qc) | |
522 | { | |
523 | struct ata_port *ap = qc->ap; | |
524 | struct pdc_port_priv *pp = ap->private_data; | |
0d5ff566 TH |
525 | void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR]; |
526 | void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR]; | |
1da177e4 LT |
527 | unsigned int portno = ap->port_no; |
528 | unsigned int i; | |
529 | ||
44877b4e | 530 | VPRINTK("ata%u: ENTER\n", ap->print_id); |
1da177e4 LT |
531 | |
532 | /* hard-code chip #0 */ | |
533 | mmio += PDC_CHIP0_OFS; | |
534 | ||
535 | i = pdc20621_ata_pkt(&qc->tf, qc->dev->devno, &pp->dimm_buf[0], portno); | |
536 | ||
537 | if (qc->tf.flags & ATA_TFLAG_LBA48) | |
538 | i = pdc_prep_lba48(&qc->tf, &pp->dimm_buf[0], i); | |
539 | else | |
540 | i = pdc_prep_lba28(&qc->tf, &pp->dimm_buf[0], i); | |
541 | ||
542 | pdc_pkt_footer(&qc->tf, &pp->dimm_buf[0], i); | |
543 | ||
544 | /* copy three S/G tables and two packets to DIMM MMIO window */ | |
545 | memcpy_toio(dimm_mmio + (portno * PDC_DIMM_WINDOW_STEP), | |
546 | &pp->dimm_buf, PDC_DIMM_HEADER_SZ); | |
547 | ||
548 | /* force host FIFO dump */ | |
549 | writel(0x00000001, mmio + PDC_20621_GENERAL_CTL); | |
550 | ||
551 | readl(dimm_mmio); /* MMIO PCI posting flush */ | |
552 | ||
553 | VPRINTK("ata pkt buf ofs %u, mmio copied\n", i); | |
554 | } | |
555 | ||
556 | static void pdc20621_qc_prep(struct ata_queued_cmd *qc) | |
557 | { | |
558 | switch (qc->tf.protocol) { | |
559 | case ATA_PROT_DMA: | |
560 | pdc20621_dma_prep(qc); | |
561 | break; | |
562 | case ATA_PROT_NODATA: | |
563 | pdc20621_nodata_prep(qc); | |
564 | break; | |
565 | default: | |
566 | break; | |
567 | } | |
568 | } | |
569 | ||
570 | static void __pdc20621_push_hdma(struct ata_queued_cmd *qc, | |
571 | unsigned int seq, | |
572 | u32 pkt_ofs) | |
573 | { | |
574 | struct ata_port *ap = qc->ap; | |
cca3974e | 575 | struct ata_host *host = ap->host; |
0d5ff566 | 576 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 LT |
577 | |
578 | /* hard-code chip #0 */ | |
579 | mmio += PDC_CHIP0_OFS; | |
580 | ||
581 | writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4)); | |
582 | readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */ | |
583 | ||
584 | writel(pkt_ofs, mmio + PDC_HDMA_PKT_SUBMIT); | |
585 | readl(mmio + PDC_HDMA_PKT_SUBMIT); /* flush */ | |
586 | } | |
587 | ||
588 | static void pdc20621_push_hdma(struct ata_queued_cmd *qc, | |
589 | unsigned int seq, | |
590 | u32 pkt_ofs) | |
591 | { | |
592 | struct ata_port *ap = qc->ap; | |
cca3974e | 593 | struct pdc_host_priv *pp = ap->host->private_data; |
1da177e4 LT |
594 | unsigned int idx = pp->hdma_prod & PDC_HDMA_Q_MASK; |
595 | ||
596 | if (!pp->doing_hdma) { | |
597 | __pdc20621_push_hdma(qc, seq, pkt_ofs); | |
598 | pp->doing_hdma = 1; | |
599 | return; | |
600 | } | |
601 | ||
602 | pp->hdma[idx].qc = qc; | |
603 | pp->hdma[idx].seq = seq; | |
604 | pp->hdma[idx].pkt_ofs = pkt_ofs; | |
605 | pp->hdma_prod++; | |
606 | } | |
607 | ||
608 | static void pdc20621_pop_hdma(struct ata_queued_cmd *qc) | |
609 | { | |
610 | struct ata_port *ap = qc->ap; | |
cca3974e | 611 | struct pdc_host_priv *pp = ap->host->private_data; |
1da177e4 LT |
612 | unsigned int idx = pp->hdma_cons & PDC_HDMA_Q_MASK; |
613 | ||
614 | /* if nothing on queue, we're done */ | |
615 | if (pp->hdma_prod == pp->hdma_cons) { | |
616 | pp->doing_hdma = 0; | |
617 | return; | |
618 | } | |
619 | ||
620 | __pdc20621_push_hdma(pp->hdma[idx].qc, pp->hdma[idx].seq, | |
621 | pp->hdma[idx].pkt_ofs); | |
622 | pp->hdma_cons++; | |
623 | } | |
624 | ||
625 | #ifdef ATA_VERBOSE_DEBUG | |
626 | static void pdc20621_dump_hdma(struct ata_queued_cmd *qc) | |
627 | { | |
628 | struct ata_port *ap = qc->ap; | |
629 | unsigned int port_no = ap->port_no; | |
0d5ff566 | 630 | void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR]; |
1da177e4 LT |
631 | |
632 | dimm_mmio += (port_no * PDC_DIMM_WINDOW_STEP); | |
633 | dimm_mmio += PDC_DIMM_HOST_PKT; | |
634 | ||
635 | printk(KERN_ERR "HDMA[0] == 0x%08X\n", readl(dimm_mmio)); | |
636 | printk(KERN_ERR "HDMA[1] == 0x%08X\n", readl(dimm_mmio + 4)); | |
637 | printk(KERN_ERR "HDMA[2] == 0x%08X\n", readl(dimm_mmio + 8)); | |
638 | printk(KERN_ERR "HDMA[3] == 0x%08X\n", readl(dimm_mmio + 12)); | |
639 | } | |
640 | #else | |
641 | static inline void pdc20621_dump_hdma(struct ata_queued_cmd *qc) { } | |
642 | #endif /* ATA_VERBOSE_DEBUG */ | |
643 | ||
644 | static void pdc20621_packet_start(struct ata_queued_cmd *qc) | |
645 | { | |
646 | struct ata_port *ap = qc->ap; | |
cca3974e | 647 | struct ata_host *host = ap->host; |
1da177e4 | 648 | unsigned int port_no = ap->port_no; |
0d5ff566 | 649 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 LT |
650 | unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); |
651 | u8 seq = (u8) (port_no + 1); | |
652 | unsigned int port_ofs; | |
653 | ||
654 | /* hard-code chip #0 */ | |
655 | mmio += PDC_CHIP0_OFS; | |
656 | ||
44877b4e | 657 | VPRINTK("ata%u: ENTER\n", ap->print_id); |
1da177e4 LT |
658 | |
659 | wmb(); /* flush PRD, pkt writes */ | |
660 | ||
661 | port_ofs = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no); | |
662 | ||
663 | /* if writing, we (1) DMA to DIMM, then (2) do ATA command */ | |
664 | if (rw && qc->tf.protocol == ATA_PROT_DMA) { | |
665 | seq += 4; | |
666 | ||
667 | pdc20621_dump_hdma(qc); | |
668 | pdc20621_push_hdma(qc, seq, port_ofs + PDC_DIMM_HOST_PKT); | |
669 | VPRINTK("queued ofs 0x%x (%u), seq %u\n", | |
670 | port_ofs + PDC_DIMM_HOST_PKT, | |
671 | port_ofs + PDC_DIMM_HOST_PKT, | |
672 | seq); | |
673 | } else { | |
674 | writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4)); | |
675 | readl(mmio + PDC_20621_SEQCTL + (seq * 4)); /* flush */ | |
676 | ||
677 | writel(port_ofs + PDC_DIMM_ATA_PKT, | |
0d5ff566 TH |
678 | ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); |
679 | readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); | |
1da177e4 LT |
680 | VPRINTK("submitted ofs 0x%x (%u), seq %u\n", |
681 | port_ofs + PDC_DIMM_ATA_PKT, | |
682 | port_ofs + PDC_DIMM_ATA_PKT, | |
683 | seq); | |
684 | } | |
685 | } | |
686 | ||
9363c382 | 687 | static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc) |
1da177e4 LT |
688 | { |
689 | switch (qc->tf.protocol) { | |
690 | case ATA_PROT_DMA: | |
691 | case ATA_PROT_NODATA: | |
692 | pdc20621_packet_start(qc); | |
693 | return 0; | |
694 | ||
0dc36888 | 695 | case ATAPI_PROT_DMA: |
1da177e4 LT |
696 | BUG(); |
697 | break; | |
698 | ||
699 | default: | |
700 | break; | |
701 | } | |
702 | ||
9363c382 | 703 | return ata_sff_qc_issue(qc); |
1da177e4 LT |
704 | } |
705 | ||
5796d1c4 JG |
706 | static inline unsigned int pdc20621_host_intr(struct ata_port *ap, |
707 | struct ata_queued_cmd *qc, | |
1da177e4 | 708 | unsigned int doing_hdma, |
ea6ba10b | 709 | void __iomem *mmio) |
1da177e4 LT |
710 | { |
711 | unsigned int port_no = ap->port_no; | |
712 | unsigned int port_ofs = | |
713 | PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * port_no); | |
714 | u8 status; | |
715 | unsigned int handled = 0; | |
716 | ||
717 | VPRINTK("ENTER\n"); | |
718 | ||
719 | if ((qc->tf.protocol == ATA_PROT_DMA) && /* read */ | |
720 | (!(qc->tf.flags & ATA_TFLAG_WRITE))) { | |
721 | ||
722 | /* step two - DMA from DIMM to host */ | |
723 | if (doing_hdma) { | |
44877b4e | 724 | VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->print_id, |
1da177e4 LT |
725 | readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT)); |
726 | /* get drive status; clear intr; complete txn */ | |
a22e2eb0 AL |
727 | qc->err_mask |= ac_err_mask(ata_wait_idle(ap)); |
728 | ata_qc_complete(qc); | |
1da177e4 LT |
729 | pdc20621_pop_hdma(qc); |
730 | } | |
731 | ||
732 | /* step one - exec ATA command */ | |
733 | else { | |
734 | u8 seq = (u8) (port_no + 1 + 4); | |
44877b4e | 735 | VPRINTK("ata%u: read ata, 0x%x 0x%x\n", ap->print_id, |
1da177e4 LT |
736 | readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT)); |
737 | ||
738 | /* submit hdma pkt */ | |
739 | pdc20621_dump_hdma(qc); | |
740 | pdc20621_push_hdma(qc, seq, | |
741 | port_ofs + PDC_DIMM_HOST_PKT); | |
742 | } | |
743 | handled = 1; | |
744 | ||
745 | } else if (qc->tf.protocol == ATA_PROT_DMA) { /* write */ | |
746 | ||
747 | /* step one - DMA from host to DIMM */ | |
748 | if (doing_hdma) { | |
749 | u8 seq = (u8) (port_no + 1); | |
44877b4e | 750 | VPRINTK("ata%u: write hdma, 0x%x 0x%x\n", ap->print_id, |
1da177e4 LT |
751 | readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT)); |
752 | ||
753 | /* submit ata pkt */ | |
754 | writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4)); | |
755 | readl(mmio + PDC_20621_SEQCTL + (seq * 4)); | |
756 | writel(port_ofs + PDC_DIMM_ATA_PKT, | |
0d5ff566 TH |
757 | ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); |
758 | readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); | |
1da177e4 LT |
759 | } |
760 | ||
761 | /* step two - execute ATA command */ | |
762 | else { | |
44877b4e | 763 | VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->print_id, |
1da177e4 LT |
764 | readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT)); |
765 | /* get drive status; clear intr; complete txn */ | |
a22e2eb0 AL |
766 | qc->err_mask |= ac_err_mask(ata_wait_idle(ap)); |
767 | ata_qc_complete(qc); | |
1da177e4 LT |
768 | pdc20621_pop_hdma(qc); |
769 | } | |
770 | handled = 1; | |
771 | ||
772 | /* command completion, but no data xfer */ | |
773 | } else if (qc->tf.protocol == ATA_PROT_NODATA) { | |
774 | ||
9363c382 | 775 | status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); |
1da177e4 | 776 | DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status); |
a22e2eb0 AL |
777 | qc->err_mask |= ac_err_mask(status); |
778 | ata_qc_complete(qc); | |
1da177e4 LT |
779 | handled = 1; |
780 | ||
781 | } else { | |
782 | ap->stats.idle_irq++; | |
783 | } | |
784 | ||
785 | return handled; | |
786 | } | |
787 | ||
788 | static void pdc20621_irq_clear(struct ata_port *ap) | |
789 | { | |
cca3974e | 790 | struct ata_host *host = ap->host; |
0d5ff566 | 791 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 LT |
792 | |
793 | mmio += PDC_CHIP0_OFS; | |
794 | ||
795 | readl(mmio + PDC_20621_SEQMASK); | |
796 | } | |
797 | ||
5796d1c4 | 798 | static irqreturn_t pdc20621_interrupt(int irq, void *dev_instance) |
1da177e4 | 799 | { |
cca3974e | 800 | struct ata_host *host = dev_instance; |
1da177e4 LT |
801 | struct ata_port *ap; |
802 | u32 mask = 0; | |
803 | unsigned int i, tmp, port_no; | |
804 | unsigned int handled = 0; | |
ea6ba10b | 805 | void __iomem *mmio_base; |
1da177e4 LT |
806 | |
807 | VPRINTK("ENTER\n"); | |
808 | ||
0d5ff566 | 809 | if (!host || !host->iomap[PDC_MMIO_BAR]) { |
1da177e4 LT |
810 | VPRINTK("QUICK EXIT\n"); |
811 | return IRQ_NONE; | |
812 | } | |
813 | ||
0d5ff566 | 814 | mmio_base = host->iomap[PDC_MMIO_BAR]; |
1da177e4 LT |
815 | |
816 | /* reading should also clear interrupts */ | |
817 | mmio_base += PDC_CHIP0_OFS; | |
818 | mask = readl(mmio_base + PDC_20621_SEQMASK); | |
819 | VPRINTK("mask == 0x%x\n", mask); | |
820 | ||
821 | if (mask == 0xffffffff) { | |
822 | VPRINTK("QUICK EXIT 2\n"); | |
823 | return IRQ_NONE; | |
824 | } | |
825 | mask &= 0xffff; /* only 16 tags possible */ | |
826 | if (!mask) { | |
827 | VPRINTK("QUICK EXIT 3\n"); | |
828 | return IRQ_NONE; | |
829 | } | |
830 | ||
5796d1c4 | 831 | spin_lock(&host->lock); |
1da177e4 | 832 | |
5796d1c4 | 833 | for (i = 1; i < 9; i++) { |
1da177e4 LT |
834 | port_no = i - 1; |
835 | if (port_no > 3) | |
836 | port_no -= 4; | |
cca3974e | 837 | if (port_no >= host->n_ports) |
1da177e4 LT |
838 | ap = NULL; |
839 | else | |
cca3974e | 840 | ap = host->ports[port_no]; |
1da177e4 LT |
841 | tmp = mask & (1 << i); |
842 | VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp); | |
c1389503 | 843 | if (tmp && ap && |
029f5468 | 844 | !(ap->flags & ATA_FLAG_DISABLED)) { |
1da177e4 LT |
845 | struct ata_queued_cmd *qc; |
846 | ||
9af5c9c9 | 847 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
e50362ec | 848 | if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) |
1da177e4 LT |
849 | handled += pdc20621_host_intr(ap, qc, (i > 4), |
850 | mmio_base); | |
851 | } | |
852 | } | |
853 | ||
5796d1c4 | 854 | spin_unlock(&host->lock); |
1da177e4 LT |
855 | |
856 | VPRINTK("mask == 0x%x\n", mask); | |
857 | ||
858 | VPRINTK("EXIT\n"); | |
859 | ||
860 | return IRQ_RETVAL(handled); | |
861 | } | |
862 | ||
67651ee5 | 863 | static void pdc_freeze(struct ata_port *ap) |
1da177e4 | 864 | { |
67651ee5 JG |
865 | void __iomem *mmio = ap->ioaddr.cmd_addr; |
866 | u32 tmp; | |
1da177e4 | 867 | |
67651ee5 | 868 | /* FIXME: if all 4 ATA engines are stopped, also stop HDMA engine */ |
1da177e4 | 869 | |
67651ee5 JG |
870 | tmp = readl(mmio + PDC_CTLSTAT); |
871 | tmp |= PDC_MASK_INT; | |
872 | tmp &= ~PDC_DMA_ENABLE; | |
873 | writel(tmp, mmio + PDC_CTLSTAT); | |
874 | readl(mmio + PDC_CTLSTAT); /* flush */ | |
875 | } | |
b8f6153e | 876 | |
67651ee5 JG |
877 | static void pdc_thaw(struct ata_port *ap) |
878 | { | |
879 | void __iomem *mmio = ap->ioaddr.cmd_addr; | |
880 | void __iomem *mmio_base; | |
881 | u32 tmp; | |
1da177e4 | 882 | |
67651ee5 | 883 | /* FIXME: start HDMA engine, if zero ATA engines running */ |
1da177e4 | 884 | |
67651ee5 JG |
885 | /* reading SEQ mask register clears IRQ */ |
886 | mmio_base = ap->host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS; | |
887 | readl(mmio_base + PDC_20621_SEQMASK); | |
1da177e4 | 888 | |
67651ee5 JG |
889 | /* turn IRQ back on */ |
890 | tmp = readl(mmio + PDC_CTLSTAT); | |
891 | tmp &= ~PDC_MASK_INT; | |
892 | writel(tmp, mmio + PDC_CTLSTAT); | |
893 | readl(mmio + PDC_CTLSTAT); /* flush */ | |
894 | } | |
1da177e4 | 895 | |
67651ee5 JG |
896 | static void pdc_reset_port(struct ata_port *ap) |
897 | { | |
898 | void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT; | |
899 | unsigned int i; | |
900 | u32 tmp; | |
901 | ||
902 | /* FIXME: handle HDMA copy engine */ | |
903 | ||
904 | for (i = 11; i > 0; i--) { | |
905 | tmp = readl(mmio); | |
906 | if (tmp & PDC_RESET) | |
907 | break; | |
908 | ||
909 | udelay(100); | |
910 | ||
911 | tmp |= PDC_RESET; | |
912 | writel(tmp, mmio); | |
1da177e4 LT |
913 | } |
914 | ||
67651ee5 JG |
915 | tmp &= ~PDC_RESET; |
916 | writel(tmp, mmio); | |
917 | readl(mmio); /* flush */ | |
918 | } | |
919 | ||
920 | static int pdc_softreset(struct ata_link *link, unsigned int *class, | |
921 | unsigned long deadline) | |
922 | { | |
923 | pdc_reset_port(link->ap); | |
924 | return ata_sff_softreset(link, class, deadline); | |
925 | } | |
926 | ||
927 | static void pdc_error_handler(struct ata_port *ap) | |
928 | { | |
929 | if (!(ap->pflags & ATA_PFLAG_FROZEN)) | |
930 | pdc_reset_port(ap); | |
931 | ||
932 | ata_std_error_handler(ap); | |
933 | } | |
934 | ||
935 | static void pdc_post_internal_cmd(struct ata_queued_cmd *qc) | |
936 | { | |
937 | struct ata_port *ap = qc->ap; | |
938 | ||
939 | /* make DMA engine forget about the failed command */ | |
940 | if (qc->flags & ATA_QCFLAG_FAILED) | |
941 | pdc_reset_port(ap); | |
942 | } | |
943 | ||
944 | static int pdc_check_atapi_dma(struct ata_queued_cmd *qc) | |
945 | { | |
946 | u8 *scsicmd = qc->scsicmd->cmnd; | |
947 | int pio = 1; /* atapi dma off by default */ | |
948 | ||
949 | /* Whitelist commands that may use DMA. */ | |
950 | switch (scsicmd[0]) { | |
951 | case WRITE_12: | |
952 | case WRITE_10: | |
953 | case WRITE_6: | |
954 | case READ_12: | |
955 | case READ_10: | |
956 | case READ_6: | |
957 | case 0xad: /* READ_DVD_STRUCTURE */ | |
958 | case 0xbe: /* READ_CD */ | |
959 | pio = 0; | |
960 | } | |
961 | /* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */ | |
962 | if (scsicmd[0] == WRITE_10) { | |
963 | unsigned int lba = | |
964 | (scsicmd[2] << 24) | | |
965 | (scsicmd[3] << 16) | | |
966 | (scsicmd[4] << 8) | | |
967 | scsicmd[5]; | |
968 | if (lba >= 0xFFFF4FA2) | |
969 | pio = 1; | |
970 | } | |
971 | return pio; | |
1da177e4 LT |
972 | } |
973 | ||
057ace5e | 974 | static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf) |
1da177e4 | 975 | { |
5796d1c4 JG |
976 | WARN_ON(tf->protocol == ATA_PROT_DMA || |
977 | tf->protocol == ATA_PROT_NODATA); | |
9363c382 | 978 | ata_sff_tf_load(ap, tf); |
1da177e4 LT |
979 | } |
980 | ||
981 | ||
057ace5e | 982 | static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf) |
1da177e4 | 983 | { |
5796d1c4 JG |
984 | WARN_ON(tf->protocol == ATA_PROT_DMA || |
985 | tf->protocol == ATA_PROT_NODATA); | |
9363c382 | 986 | ata_sff_exec_command(ap, tf); |
1da177e4 LT |
987 | } |
988 | ||
989 | ||
0d5ff566 | 990 | static void pdc_sata_setup_port(struct ata_ioports *port, void __iomem *base) |
1da177e4 LT |
991 | { |
992 | port->cmd_addr = base; | |
993 | port->data_addr = base; | |
994 | port->feature_addr = | |
995 | port->error_addr = base + 0x4; | |
996 | port->nsect_addr = base + 0x8; | |
997 | port->lbal_addr = base + 0xc; | |
998 | port->lbam_addr = base + 0x10; | |
999 | port->lbah_addr = base + 0x14; | |
1000 | port->device_addr = base + 0x18; | |
1001 | port->command_addr = | |
1002 | port->status_addr = base + 0x1c; | |
1003 | port->altstatus_addr = | |
1004 | port->ctl_addr = base + 0x38; | |
1005 | } | |
1006 | ||
1007 | ||
1008 | #ifdef ATA_VERBOSE_DEBUG | |
4447d351 | 1009 | static void pdc20621_get_from_dimm(struct ata_host *host, void *psource, |
1da177e4 LT |
1010 | u32 offset, u32 size) |
1011 | { | |
1012 | u32 window_size; | |
1013 | u16 idx; | |
1014 | u8 page_mask; | |
1015 | long dist; | |
4447d351 TH |
1016 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1017 | void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR]; | |
1da177e4 LT |
1018 | |
1019 | /* hard-code chip #0 */ | |
1020 | mmio += PDC_CHIP0_OFS; | |
1021 | ||
8a60a071 | 1022 | page_mask = 0x00; |
5796d1c4 | 1023 | window_size = 0x2000 * 4; /* 32K byte uchar size */ |
8a60a071 | 1024 | idx = (u16) (offset / window_size); |
1da177e4 LT |
1025 | |
1026 | writel(0x01, mmio + PDC_GENERAL_CTLR); | |
1027 | readl(mmio + PDC_GENERAL_CTLR); | |
1028 | writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR); | |
1029 | readl(mmio + PDC_DIMM_WINDOW_CTLR); | |
1030 | ||
1031 | offset -= (idx * window_size); | |
1032 | idx++; | |
8a60a071 | 1033 | dist = ((long) (window_size - (offset + size))) >= 0 ? size : |
1da177e4 | 1034 | (long) (window_size - offset); |
8a60a071 | 1035 | memcpy_fromio((char *) psource, (char *) (dimm_mmio + offset / 4), |
1da177e4 LT |
1036 | dist); |
1037 | ||
8a60a071 | 1038 | psource += dist; |
1da177e4 LT |
1039 | size -= dist; |
1040 | for (; (long) size >= (long) window_size ;) { | |
1041 | writel(0x01, mmio + PDC_GENERAL_CTLR); | |
1042 | readl(mmio + PDC_GENERAL_CTLR); | |
1043 | writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR); | |
1044 | readl(mmio + PDC_DIMM_WINDOW_CTLR); | |
8a60a071 | 1045 | memcpy_fromio((char *) psource, (char *) (dimm_mmio), |
1da177e4 LT |
1046 | window_size / 4); |
1047 | psource += window_size; | |
1048 | size -= window_size; | |
5796d1c4 | 1049 | idx++; |
1da177e4 LT |
1050 | } |
1051 | ||
1052 | if (size) { | |
1053 | writel(0x01, mmio + PDC_GENERAL_CTLR); | |
1054 | readl(mmio + PDC_GENERAL_CTLR); | |
1055 | writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR); | |
1056 | readl(mmio + PDC_DIMM_WINDOW_CTLR); | |
8a60a071 | 1057 | memcpy_fromio((char *) psource, (char *) (dimm_mmio), |
1da177e4 LT |
1058 | size / 4); |
1059 | } | |
1060 | } | |
1061 | #endif | |
1062 | ||
1063 | ||
4447d351 | 1064 | static void pdc20621_put_to_dimm(struct ata_host *host, void *psource, |
1da177e4 LT |
1065 | u32 offset, u32 size) |
1066 | { | |
1067 | u32 window_size; | |
1068 | u16 idx; | |
1069 | u8 page_mask; | |
1070 | long dist; | |
4447d351 TH |
1071 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1072 | void __iomem *dimm_mmio = host->iomap[PDC_DIMM_BAR]; | |
1da177e4 | 1073 | |
8a60a071 | 1074 | /* hard-code chip #0 */ |
1da177e4 LT |
1075 | mmio += PDC_CHIP0_OFS; |
1076 | ||
8a60a071 | 1077 | page_mask = 0x00; |
5796d1c4 | 1078 | window_size = 0x2000 * 4; /* 32K byte uchar size */ |
1da177e4 LT |
1079 | idx = (u16) (offset / window_size); |
1080 | ||
1081 | writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR); | |
1082 | readl(mmio + PDC_DIMM_WINDOW_CTLR); | |
8a60a071 | 1083 | offset -= (idx * window_size); |
1da177e4 LT |
1084 | idx++; |
1085 | dist = ((long)(s32)(window_size - (offset + size))) >= 0 ? size : | |
1086 | (long) (window_size - offset); | |
a9afd7cd | 1087 | memcpy_toio(dimm_mmio + offset / 4, psource, dist); |
1da177e4 LT |
1088 | writel(0x01, mmio + PDC_GENERAL_CTLR); |
1089 | readl(mmio + PDC_GENERAL_CTLR); | |
1090 | ||
8a60a071 | 1091 | psource += dist; |
1da177e4 LT |
1092 | size -= dist; |
1093 | for (; (long) size >= (long) window_size ;) { | |
1094 | writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR); | |
1095 | readl(mmio + PDC_DIMM_WINDOW_CTLR); | |
a9afd7cd | 1096 | memcpy_toio(dimm_mmio, psource, window_size / 4); |
1da177e4 LT |
1097 | writel(0x01, mmio + PDC_GENERAL_CTLR); |
1098 | readl(mmio + PDC_GENERAL_CTLR); | |
1099 | psource += window_size; | |
1100 | size -= window_size; | |
5796d1c4 | 1101 | idx++; |
1da177e4 | 1102 | } |
8a60a071 | 1103 | |
1da177e4 LT |
1104 | if (size) { |
1105 | writel(((idx) << page_mask), mmio + PDC_DIMM_WINDOW_CTLR); | |
1106 | readl(mmio + PDC_DIMM_WINDOW_CTLR); | |
a9afd7cd | 1107 | memcpy_toio(dimm_mmio, psource, size / 4); |
1da177e4 LT |
1108 | writel(0x01, mmio + PDC_GENERAL_CTLR); |
1109 | readl(mmio + PDC_GENERAL_CTLR); | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | ||
4447d351 | 1114 | static unsigned int pdc20621_i2c_read(struct ata_host *host, u32 device, |
1da177e4 LT |
1115 | u32 subaddr, u32 *pdata) |
1116 | { | |
4447d351 | 1117 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 | 1118 | u32 i2creg = 0; |
8a60a071 | 1119 | u32 status; |
5796d1c4 | 1120 | u32 count = 0; |
1da177e4 LT |
1121 | |
1122 | /* hard-code chip #0 */ | |
1123 | mmio += PDC_CHIP0_OFS; | |
1124 | ||
1125 | i2creg |= device << 24; | |
1126 | i2creg |= subaddr << 16; | |
1127 | ||
1128 | /* Set the device and subaddress */ | |
b2d46b61 JG |
1129 | writel(i2creg, mmio + PDC_I2C_ADDR_DATA); |
1130 | readl(mmio + PDC_I2C_ADDR_DATA); | |
1da177e4 LT |
1131 | |
1132 | /* Write Control to perform read operation, mask int */ | |
8a60a071 | 1133 | writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT, |
b2d46b61 | 1134 | mmio + PDC_I2C_CONTROL); |
1da177e4 LT |
1135 | |
1136 | for (count = 0; count <= 1000; count ++) { | |
b2d46b61 | 1137 | status = readl(mmio + PDC_I2C_CONTROL); |
1da177e4 | 1138 | if (status & PDC_I2C_COMPLETE) { |
b2d46b61 | 1139 | status = readl(mmio + PDC_I2C_ADDR_DATA); |
1da177e4 LT |
1140 | break; |
1141 | } else if (count == 1000) | |
1142 | return 0; | |
1143 | } | |
1144 | ||
1145 | *pdata = (status >> 8) & 0x000000ff; | |
8a60a071 | 1146 | return 1; |
1da177e4 LT |
1147 | } |
1148 | ||
1149 | ||
4447d351 | 1150 | static int pdc20621_detect_dimm(struct ata_host *host) |
1da177e4 | 1151 | { |
5796d1c4 | 1152 | u32 data = 0; |
4447d351 | 1153 | if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, |
1da177e4 | 1154 | PDC_DIMM_SPD_SYSTEM_FREQ, &data)) { |
5796d1c4 | 1155 | if (data == 100) |
1da177e4 | 1156 | return 100; |
5796d1c4 | 1157 | } else |
1da177e4 | 1158 | return 0; |
8a60a071 | 1159 | |
4447d351 | 1160 | if (pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, 9, &data)) { |
b447916e | 1161 | if (data <= 0x75) |
1da177e4 | 1162 | return 133; |
5796d1c4 | 1163 | } else |
1da177e4 | 1164 | return 0; |
8a60a071 | 1165 | |
5796d1c4 | 1166 | return 0; |
1da177e4 LT |
1167 | } |
1168 | ||
1169 | ||
4447d351 | 1170 | static int pdc20621_prog_dimm0(struct ata_host *host) |
1da177e4 LT |
1171 | { |
1172 | u32 spd0[50]; | |
1173 | u32 data = 0; | |
5796d1c4 JG |
1174 | int size, i; |
1175 | u8 bdimmsize; | |
4447d351 | 1176 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 LT |
1177 | static const struct { |
1178 | unsigned int reg; | |
1179 | unsigned int ofs; | |
1180 | } pdc_i2c_read_data [] = { | |
8a60a071 | 1181 | { PDC_DIMM_SPD_TYPE, 11 }, |
1da177e4 | 1182 | { PDC_DIMM_SPD_FRESH_RATE, 12 }, |
8a60a071 | 1183 | { PDC_DIMM_SPD_COLUMN_NUM, 4 }, |
1da177e4 LT |
1184 | { PDC_DIMM_SPD_ATTRIBUTE, 21 }, |
1185 | { PDC_DIMM_SPD_ROW_NUM, 3 }, | |
1186 | { PDC_DIMM_SPD_BANK_NUM, 17 }, | |
1187 | { PDC_DIMM_SPD_MODULE_ROW, 5 }, | |
1188 | { PDC_DIMM_SPD_ROW_PRE_CHARGE, 27 }, | |
1189 | { PDC_DIMM_SPD_ROW_ACTIVE_DELAY, 28 }, | |
1190 | { PDC_DIMM_SPD_RAS_CAS_DELAY, 29 }, | |
1191 | { PDC_DIMM_SPD_ACTIVE_PRECHARGE, 30 }, | |
8a60a071 | 1192 | { PDC_DIMM_SPD_CAS_LATENCY, 18 }, |
1da177e4 LT |
1193 | }; |
1194 | ||
1195 | /* hard-code chip #0 */ | |
1196 | mmio += PDC_CHIP0_OFS; | |
1197 | ||
5796d1c4 | 1198 | for (i = 0; i < ARRAY_SIZE(pdc_i2c_read_data); i++) |
4447d351 | 1199 | pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, |
8a60a071 | 1200 | pdc_i2c_read_data[i].reg, |
1da177e4 | 1201 | &spd0[pdc_i2c_read_data[i].ofs]); |
8a60a071 | 1202 | |
5796d1c4 JG |
1203 | data |= (spd0[4] - 8) | ((spd0[21] != 0) << 3) | ((spd0[3]-11) << 4); |
1204 | data |= ((spd0[17] / 4) << 6) | ((spd0[5] / 2) << 7) | | |
1da177e4 | 1205 | ((((spd0[27] + 9) / 10) - 1) << 8) ; |
5796d1c4 | 1206 | data |= (((((spd0[29] > spd0[28]) |
8a60a071 | 1207 | ? spd0[29] : spd0[28]) + 9) / 10) - 1) << 10; |
5796d1c4 | 1208 | data |= ((spd0[30] - spd0[29] + 9) / 10 - 2) << 12; |
8a60a071 | 1209 | |
5796d1c4 | 1210 | if (spd0[18] & 0x08) |
1da177e4 | 1211 | data |= ((0x03) << 14); |
5796d1c4 | 1212 | else if (spd0[18] & 0x04) |
1da177e4 | 1213 | data |= ((0x02) << 14); |
5796d1c4 | 1214 | else if (spd0[18] & 0x01) |
1da177e4 | 1215 | data |= ((0x01) << 14); |
5796d1c4 | 1216 | else |
1da177e4 LT |
1217 | data |= (0 << 14); |
1218 | ||
5796d1c4 | 1219 | /* |
1da177e4 LT |
1220 | Calculate the size of bDIMMSize (power of 2) and |
1221 | merge the DIMM size by program start/end address. | |
1222 | */ | |
1223 | ||
5796d1c4 JG |
1224 | bdimmsize = spd0[4] + (spd0[5] / 2) + spd0[3] + (spd0[17] / 2) + 3; |
1225 | size = (1 << bdimmsize) >> 20; /* size = xxx(MB) */ | |
1226 | data |= (((size / 16) - 1) << 16); | |
1227 | data |= (0 << 23); | |
1da177e4 | 1228 | data |= 8; |
5796d1c4 | 1229 | writel(data, mmio + PDC_DIMM0_CONTROL); |
b2d46b61 | 1230 | readl(mmio + PDC_DIMM0_CONTROL); |
5796d1c4 | 1231 | return size; |
1da177e4 LT |
1232 | } |
1233 | ||
1234 | ||
4447d351 | 1235 | static unsigned int pdc20621_prog_dimm_global(struct ata_host *host) |
1da177e4 LT |
1236 | { |
1237 | u32 data, spd0; | |
0d5ff566 | 1238 | int error, i; |
4447d351 | 1239 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 LT |
1240 | |
1241 | /* hard-code chip #0 */ | |
5796d1c4 | 1242 | mmio += PDC_CHIP0_OFS; |
1da177e4 | 1243 | |
5796d1c4 | 1244 | /* |
1da177e4 LT |
1245 | Set To Default : DIMM Module Global Control Register (0x022259F1) |
1246 | DIMM Arbitration Disable (bit 20) | |
1247 | DIMM Data/Control Output Driving Selection (bit12 - bit15) | |
1248 | Refresh Enable (bit 17) | |
1249 | */ | |
1250 | ||
8a60a071 | 1251 | data = 0x022259F1; |
b2d46b61 JG |
1252 | writel(data, mmio + PDC_SDRAM_CONTROL); |
1253 | readl(mmio + PDC_SDRAM_CONTROL); | |
1da177e4 LT |
1254 | |
1255 | /* Turn on for ECC */ | |
4447d351 | 1256 | pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, |
1da177e4 LT |
1257 | PDC_DIMM_SPD_TYPE, &spd0); |
1258 | if (spd0 == 0x02) { | |
1259 | data |= (0x01 << 16); | |
b2d46b61 JG |
1260 | writel(data, mmio + PDC_SDRAM_CONTROL); |
1261 | readl(mmio + PDC_SDRAM_CONTROL); | |
1da177e4 | 1262 | printk(KERN_ERR "Local DIMM ECC Enabled\n"); |
5796d1c4 | 1263 | } |
1da177e4 | 1264 | |
5796d1c4 JG |
1265 | /* DIMM Initialization Select/Enable (bit 18/19) */ |
1266 | data &= (~(1<<18)); | |
1267 | data |= (1<<19); | |
1268 | writel(data, mmio + PDC_SDRAM_CONTROL); | |
1da177e4 | 1269 | |
5796d1c4 JG |
1270 | error = 1; |
1271 | for (i = 1; i <= 10; i++) { /* polling ~5 secs */ | |
b2d46b61 | 1272 | data = readl(mmio + PDC_SDRAM_CONTROL); |
1da177e4 | 1273 | if (!(data & (1<<19))) { |
5796d1c4 JG |
1274 | error = 0; |
1275 | break; | |
1da177e4 LT |
1276 | } |
1277 | msleep(i*100); | |
5796d1c4 JG |
1278 | } |
1279 | return error; | |
1da177e4 | 1280 | } |
8a60a071 | 1281 | |
1da177e4 | 1282 | |
4447d351 | 1283 | static unsigned int pdc20621_dimm_init(struct ata_host *host) |
1da177e4 | 1284 | { |
8a60a071 | 1285 | int speed, size, length; |
5796d1c4 JG |
1286 | u32 addr, spd0, pci_status; |
1287 | u32 tmp = 0; | |
1288 | u32 time_period = 0; | |
1289 | u32 tcount = 0; | |
1290 | u32 ticks = 0; | |
1291 | u32 clock = 0; | |
1292 | u32 fparam = 0; | |
4447d351 | 1293 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 LT |
1294 | |
1295 | /* hard-code chip #0 */ | |
5796d1c4 | 1296 | mmio += PDC_CHIP0_OFS; |
1da177e4 LT |
1297 | |
1298 | /* Initialize PLL based upon PCI Bus Frequency */ | |
1299 | ||
1300 | /* Initialize Time Period Register */ | |
1301 | writel(0xffffffff, mmio + PDC_TIME_PERIOD); | |
1302 | time_period = readl(mmio + PDC_TIME_PERIOD); | |
1303 | VPRINTK("Time Period Register (0x40): 0x%x\n", time_period); | |
1304 | ||
1305 | /* Enable timer */ | |
b2d46b61 | 1306 | writel(PDC_TIMER_DEFAULT, mmio + PDC_TIME_CONTROL); |
1da177e4 LT |
1307 | readl(mmio + PDC_TIME_CONTROL); |
1308 | ||
1309 | /* Wait 3 seconds */ | |
1310 | msleep(3000); | |
1311 | ||
8a60a071 | 1312 | /* |
1da177e4 LT |
1313 | When timer is enabled, counter is decreased every internal |
1314 | clock cycle. | |
1315 | */ | |
1316 | ||
1317 | tcount = readl(mmio + PDC_TIME_COUNTER); | |
1318 | VPRINTK("Time Counter Register (0x44): 0x%x\n", tcount); | |
1319 | ||
8a60a071 | 1320 | /* |
1da177e4 LT |
1321 | If SX4 is on PCI-X bus, after 3 seconds, the timer counter |
1322 | register should be >= (0xffffffff - 3x10^8). | |
1323 | */ | |
b447916e | 1324 | if (tcount >= PCI_X_TCOUNT) { |
1da177e4 LT |
1325 | ticks = (time_period - tcount); |
1326 | VPRINTK("Num counters 0x%x (%d)\n", ticks, ticks); | |
8a60a071 | 1327 | |
1da177e4 LT |
1328 | clock = (ticks / 300000); |
1329 | VPRINTK("10 * Internal clk = 0x%x (%d)\n", clock, clock); | |
8a60a071 | 1330 | |
1da177e4 LT |
1331 | clock = (clock * 33); |
1332 | VPRINTK("10 * Internal clk * 33 = 0x%x (%d)\n", clock, clock); | |
1333 | ||
1334 | /* PLL F Param (bit 22:16) */ | |
1335 | fparam = (1400000 / clock) - 2; | |
1336 | VPRINTK("PLL F Param: 0x%x (%d)\n", fparam, fparam); | |
8a60a071 | 1337 | |
1da177e4 LT |
1338 | /* OD param = 0x2 (bit 31:30), R param = 0x5 (bit 29:25) */ |
1339 | pci_status = (0x8a001824 | (fparam << 16)); | |
1340 | } else | |
1341 | pci_status = PCI_PLL_INIT; | |
1342 | ||
1343 | /* Initialize PLL. */ | |
1344 | VPRINTK("pci_status: 0x%x\n", pci_status); | |
1345 | writel(pci_status, mmio + PDC_CTL_STATUS); | |
1346 | readl(mmio + PDC_CTL_STATUS); | |
1347 | ||
8a60a071 | 1348 | /* |
1da177e4 LT |
1349 | Read SPD of DIMM by I2C interface, |
1350 | and program the DIMM Module Controller. | |
1351 | */ | |
4447d351 | 1352 | if (!(speed = pdc20621_detect_dimm(host))) { |
8a60a071 | 1353 | printk(KERN_ERR "Detect Local DIMM Fail\n"); |
1da177e4 | 1354 | return 1; /* DIMM error */ |
5796d1c4 JG |
1355 | } |
1356 | VPRINTK("Local DIMM Speed = %d\n", speed); | |
1da177e4 | 1357 | |
5796d1c4 | 1358 | /* Programming DIMM0 Module Control Register (index_CID0:80h) */ |
4447d351 | 1359 | size = pdc20621_prog_dimm0(host); |
5796d1c4 | 1360 | VPRINTK("Local DIMM Size = %dMB\n", size); |
1da177e4 | 1361 | |
5796d1c4 | 1362 | /* Programming DIMM Module Global Control Register (index_CID0:88h) */ |
4447d351 | 1363 | if (pdc20621_prog_dimm_global(host)) { |
1da177e4 LT |
1364 | printk(KERN_ERR "Programming DIMM Module Global Control Register Fail\n"); |
1365 | return 1; | |
5796d1c4 | 1366 | } |
1da177e4 LT |
1367 | |
1368 | #ifdef ATA_VERBOSE_DEBUG | |
1369 | { | |
5796d1c4 JG |
1370 | u8 test_parttern1[40] = |
1371 | {0x55,0xAA,'P','r','o','m','i','s','e',' ', | |
1372 | 'N','o','t',' ','Y','e','t',' ', | |
1373 | 'D','e','f','i','n','e','d',' ', | |
1374 | '1','.','1','0', | |
1375 | '9','8','0','3','1','6','1','2',0,0}; | |
1da177e4 LT |
1376 | u8 test_parttern2[40] = {0}; |
1377 | ||
5796d1c4 JG |
1378 | pdc20621_put_to_dimm(host, test_parttern2, 0x10040, 40); |
1379 | pdc20621_put_to_dimm(host, test_parttern2, 0x40, 40); | |
1da177e4 | 1380 | |
5796d1c4 JG |
1381 | pdc20621_put_to_dimm(host, test_parttern1, 0x10040, 40); |
1382 | pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40); | |
8a60a071 | 1383 | printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0], |
1da177e4 | 1384 | test_parttern2[1], &(test_parttern2[2])); |
5796d1c4 | 1385 | pdc20621_get_from_dimm(host, test_parttern2, 0x10040, |
1da177e4 | 1386 | 40); |
8a60a071 | 1387 | printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0], |
1da177e4 LT |
1388 | test_parttern2[1], &(test_parttern2[2])); |
1389 | ||
5796d1c4 JG |
1390 | pdc20621_put_to_dimm(host, test_parttern1, 0x40, 40); |
1391 | pdc20621_get_from_dimm(host, test_parttern2, 0x40, 40); | |
8a60a071 | 1392 | printk(KERN_ERR "%x, %x, %s\n", test_parttern2[0], |
1da177e4 LT |
1393 | test_parttern2[1], &(test_parttern2[2])); |
1394 | } | |
1395 | #endif | |
1396 | ||
1397 | /* ECC initiliazation. */ | |
1398 | ||
4447d351 | 1399 | pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, |
1da177e4 LT |
1400 | PDC_DIMM_SPD_TYPE, &spd0); |
1401 | if (spd0 == 0x02) { | |
1402 | VPRINTK("Start ECC initialization\n"); | |
1403 | addr = 0; | |
1404 | length = size * 1024 * 1024; | |
1405 | while (addr < length) { | |
4447d351 | 1406 | pdc20621_put_to_dimm(host, (void *) &tmp, addr, |
1da177e4 LT |
1407 | sizeof(u32)); |
1408 | addr += sizeof(u32); | |
1409 | } | |
1410 | VPRINTK("Finish ECC initialization\n"); | |
1411 | } | |
1412 | return 0; | |
1413 | } | |
1414 | ||
1415 | ||
4447d351 | 1416 | static void pdc_20621_init(struct ata_host *host) |
1da177e4 LT |
1417 | { |
1418 | u32 tmp; | |
4447d351 | 1419 | void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; |
1da177e4 LT |
1420 | |
1421 | /* hard-code chip #0 */ | |
1422 | mmio += PDC_CHIP0_OFS; | |
1423 | ||
1424 | /* | |
1425 | * Select page 0x40 for our 32k DIMM window | |
1426 | */ | |
1427 | tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000; | |
1428 | tmp |= PDC_PAGE_WINDOW; /* page 40h; arbitrarily selected */ | |
1429 | writel(tmp, mmio + PDC_20621_DIMM_WINDOW); | |
1430 | ||
1431 | /* | |
1432 | * Reset Host DMA | |
1433 | */ | |
1434 | tmp = readl(mmio + PDC_HDMA_CTLSTAT); | |
1435 | tmp |= PDC_RESET; | |
1436 | writel(tmp, mmio + PDC_HDMA_CTLSTAT); | |
1437 | readl(mmio + PDC_HDMA_CTLSTAT); /* flush */ | |
1438 | ||
1439 | udelay(10); | |
1440 | ||
1441 | tmp = readl(mmio + PDC_HDMA_CTLSTAT); | |
1442 | tmp &= ~PDC_RESET; | |
1443 | writel(tmp, mmio + PDC_HDMA_CTLSTAT); | |
1444 | readl(mmio + PDC_HDMA_CTLSTAT); /* flush */ | |
1445 | } | |
1446 | ||
5796d1c4 JG |
1447 | static int pdc_sata_init_one(struct pci_dev *pdev, |
1448 | const struct pci_device_id *ent) | |
1da177e4 LT |
1449 | { |
1450 | static int printed_version; | |
4447d351 TH |
1451 | const struct ata_port_info *ppi[] = |
1452 | { &pdc_port_info[ent->driver_data], NULL }; | |
1453 | struct ata_host *host; | |
24dc5f33 | 1454 | struct pdc_host_priv *hpriv; |
cbcdd875 | 1455 | int i, rc; |
1da177e4 LT |
1456 | |
1457 | if (!printed_version++) | |
a9524a76 | 1458 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
1da177e4 | 1459 | |
4447d351 TH |
1460 | /* allocate host */ |
1461 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, 4); | |
1462 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
1463 | if (!host || !hpriv) | |
1464 | return -ENOMEM; | |
1465 | ||
1466 | host->private_data = hpriv; | |
1467 | ||
1468 | /* acquire resources and fill host */ | |
24dc5f33 | 1469 | rc = pcim_enable_device(pdev); |
1da177e4 LT |
1470 | if (rc) |
1471 | return rc; | |
1472 | ||
0d5ff566 TH |
1473 | rc = pcim_iomap_regions(pdev, (1 << PDC_MMIO_BAR) | (1 << PDC_DIMM_BAR), |
1474 | DRV_NAME); | |
1475 | if (rc == -EBUSY) | |
24dc5f33 | 1476 | pcim_pin_device(pdev); |
0d5ff566 | 1477 | if (rc) |
24dc5f33 | 1478 | return rc; |
4447d351 TH |
1479 | host->iomap = pcim_iomap_table(pdev); |
1480 | ||
cbcdd875 TH |
1481 | for (i = 0; i < 4; i++) { |
1482 | struct ata_port *ap = host->ports[i]; | |
1483 | void __iomem *base = host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS; | |
1484 | unsigned int offset = 0x200 + i * 0x80; | |
1485 | ||
1486 | pdc_sata_setup_port(&ap->ioaddr, base + offset); | |
1487 | ||
1488 | ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio"); | |
1489 | ata_port_pbar_desc(ap, PDC_DIMM_BAR, -1, "dimm"); | |
1490 | ata_port_pbar_desc(ap, PDC_MMIO_BAR, offset, "port"); | |
1491 | } | |
1da177e4 | 1492 | |
4447d351 | 1493 | /* configure and activate */ |
1da177e4 LT |
1494 | rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); |
1495 | if (rc) | |
24dc5f33 | 1496 | return rc; |
1da177e4 LT |
1497 | rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); |
1498 | if (rc) | |
24dc5f33 | 1499 | return rc; |
1da177e4 | 1500 | |
4447d351 | 1501 | if (pdc20621_dimm_init(host)) |
24dc5f33 | 1502 | return -ENOMEM; |
4447d351 | 1503 | pdc_20621_init(host); |
1da177e4 LT |
1504 | |
1505 | pci_set_master(pdev); | |
4447d351 TH |
1506 | return ata_host_activate(host, pdev->irq, pdc20621_interrupt, |
1507 | IRQF_SHARED, &pdc_sata_sht); | |
1da177e4 LT |
1508 | } |
1509 | ||
1510 | ||
1511 | static int __init pdc_sata_init(void) | |
1512 | { | |
b7887196 | 1513 | return pci_register_driver(&pdc_sata_pci_driver); |
1da177e4 LT |
1514 | } |
1515 | ||
1516 | ||
1517 | static void __exit pdc_sata_exit(void) | |
1518 | { | |
1519 | pci_unregister_driver(&pdc_sata_pci_driver); | |
1520 | } | |
1521 | ||
1522 | ||
1523 | MODULE_AUTHOR("Jeff Garzik"); | |
1524 | MODULE_DESCRIPTION("Promise SATA low-level driver"); | |
1525 | MODULE_LICENSE("GPL"); | |
1526 | MODULE_DEVICE_TABLE(pci, pdc_sata_pci_tbl); | |
1527 | MODULE_VERSION(DRV_VERSION); | |
1528 | ||
1529 | module_init(pdc_sata_init); | |
1530 | module_exit(pdc_sata_exit); |