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s3c2410fb: fix s3c2410 compilation
[pv_ops_mirror.git] / drivers / ata / sata_nv.c
blob0b58c4df6fd2a800c23dfe59390abb8d1055ca2b
1 /*
2 * sata_nv.c - NVIDIA nForce SATA
3 *
4 * Copyright 2004 NVIDIA Corp. All rights reserved.
5 * Copyright 2004 Andrew Chew
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING. If not, write to
20 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
21 *
22 *
23 * libata documentation is available via 'make {ps|pdf}docs',
24 * as Documentation/DocBook/libata.*
25 *
26 * No hardware documentation available outside of NVIDIA.
27 * This driver programs the NVIDIA SATA controller in a similar
28 * fashion as with other PCI IDE BMDMA controllers, with a few
29 * NV-specific details such as register offsets, SATA phy location,
30 * hotplug info, etc.
31 *
32 * CK804/MCP04 controllers support an alternate programming interface
33 * similar to the ADMA specification (with some modifications).
34 * This allows the use of NCQ. Non-DMA-mapped ATA commands are still
35 * sent through the legacy interface.
36 *
37 */
38
39 #include <linux/kernel.h>
40 #include <linux/module.h>
41 #include <linux/pci.h>
42 #include <linux/init.h>
43 #include <linux/blkdev.h>
44 #include <linux/delay.h>
45 #include <linux/interrupt.h>
46 #include <linux/device.h>
47 #include <scsi/scsi_host.h>
48 #include <scsi/scsi_device.h>
49 #include <linux/libata.h>
50
51 #define DRV_NAME "sata_nv"
52 #define DRV_VERSION "3.4"
53
54 #define NV_ADMA_DMA_BOUNDARY 0xffffffffUL
55
56 enum {
57 NV_MMIO_BAR = 5,
58
59 NV_PORTS = 2,
60 NV_PIO_MASK = 0x1f,
61 NV_MWDMA_MASK = 0x07,
62 NV_UDMA_MASK = 0x7f,
63 NV_PORT0_SCR_REG_OFFSET = 0x00,
64 NV_PORT1_SCR_REG_OFFSET = 0x40,
65
66 /* INT_STATUS/ENABLE */
67 NV_INT_STATUS = 0x10,
68 NV_INT_ENABLE = 0x11,
69 NV_INT_STATUS_CK804 = 0x440,
70 NV_INT_ENABLE_CK804 = 0x441,
71
72 /* INT_STATUS/ENABLE bits */
73 NV_INT_DEV = 0x01,
74 NV_INT_PM = 0x02,
75 NV_INT_ADDED = 0x04,
76 NV_INT_REMOVED = 0x08,
77
78 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
79
80 NV_INT_ALL = 0x0f,
81 NV_INT_MASK = NV_INT_DEV |
82 NV_INT_ADDED | NV_INT_REMOVED,
83
84 /* INT_CONFIG */
85 NV_INT_CONFIG = 0x12,
86 NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI
87
88 // For PCI config register 20
89 NV_MCP_SATA_CFG_20 = 0x50,
90 NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04,
91 NV_MCP_SATA_CFG_20_PORT0_EN = (1 << 17),
92 NV_MCP_SATA_CFG_20_PORT1_EN = (1 << 16),
93 NV_MCP_SATA_CFG_20_PORT0_PWB_EN = (1 << 14),
94 NV_MCP_SATA_CFG_20_PORT1_PWB_EN = (1 << 12),
95
96 NV_ADMA_MAX_CPBS = 32,
97 NV_ADMA_CPB_SZ = 128,
98 NV_ADMA_APRD_SZ = 16,
99 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
100 NV_ADMA_APRD_SZ,
101 NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5,
102 NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ,
103 NV_ADMA_PORT_PRIV_DMA_SZ = NV_ADMA_MAX_CPBS *
104 (NV_ADMA_CPB_SZ + NV_ADMA_SGTBL_SZ),
105
106 /* BAR5 offset to ADMA general registers */
107 NV_ADMA_GEN = 0x400,
108 NV_ADMA_GEN_CTL = 0x00,
109 NV_ADMA_NOTIFIER_CLEAR = 0x30,
110
111 /* BAR5 offset to ADMA ports */
112 NV_ADMA_PORT = 0x480,
113
114 /* size of ADMA port register space */
115 NV_ADMA_PORT_SIZE = 0x100,
116
117 /* ADMA port registers */
118 NV_ADMA_CTL = 0x40,
119 NV_ADMA_CPB_COUNT = 0x42,
120 NV_ADMA_NEXT_CPB_IDX = 0x43,
121 NV_ADMA_STAT = 0x44,
122 NV_ADMA_CPB_BASE_LOW = 0x48,
123 NV_ADMA_CPB_BASE_HIGH = 0x4C,
124 NV_ADMA_APPEND = 0x50,
125 NV_ADMA_NOTIFIER = 0x68,
126 NV_ADMA_NOTIFIER_ERROR = 0x6C,
127
128 /* NV_ADMA_CTL register bits */
129 NV_ADMA_CTL_HOTPLUG_IEN = (1 << 0),
130 NV_ADMA_CTL_CHANNEL_RESET = (1 << 5),
131 NV_ADMA_CTL_GO = (1 << 7),
132 NV_ADMA_CTL_AIEN = (1 << 8),
133 NV_ADMA_CTL_READ_NON_COHERENT = (1 << 11),
134 NV_ADMA_CTL_WRITE_NON_COHERENT = (1 << 12),
135
136 /* CPB response flag bits */
137 NV_CPB_RESP_DONE = (1 << 0),
138 NV_CPB_RESP_ATA_ERR = (1 << 3),
139 NV_CPB_RESP_CMD_ERR = (1 << 4),
140 NV_CPB_RESP_CPB_ERR = (1 << 7),
141
142 /* CPB control flag bits */
143 NV_CPB_CTL_CPB_VALID = (1 << 0),
144 NV_CPB_CTL_QUEUE = (1 << 1),
145 NV_CPB_CTL_APRD_VALID = (1 << 2),
146 NV_CPB_CTL_IEN = (1 << 3),
147 NV_CPB_CTL_FPDMA = (1 << 4),
148
149 /* APRD flags */
150 NV_APRD_WRITE = (1 << 1),
151 NV_APRD_END = (1 << 2),
152 NV_APRD_CONT = (1 << 3),
153
154 /* NV_ADMA_STAT flags */
155 NV_ADMA_STAT_TIMEOUT = (1 << 0),
156 NV_ADMA_STAT_HOTUNPLUG = (1 << 1),
157 NV_ADMA_STAT_HOTPLUG = (1 << 2),
158 NV_ADMA_STAT_CPBERR = (1 << 4),
159 NV_ADMA_STAT_SERROR = (1 << 5),
160 NV_ADMA_STAT_CMD_COMPLETE = (1 << 6),
161 NV_ADMA_STAT_IDLE = (1 << 8),
162 NV_ADMA_STAT_LEGACY = (1 << 9),
163 NV_ADMA_STAT_STOPPED = (1 << 10),
164 NV_ADMA_STAT_DONE = (1 << 12),
165 NV_ADMA_STAT_ERR = NV_ADMA_STAT_CPBERR |
166 NV_ADMA_STAT_TIMEOUT,
167
168 /* port flags */
169 NV_ADMA_PORT_REGISTER_MODE = (1 << 0),
170 NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1),
171
172 };
173
174 /* ADMA Physical Region Descriptor - one SG segment */
175 struct nv_adma_prd {
176 __le64 addr;
177 __le32 len;
178 u8 flags;
179 u8 packet_len;
180 __le16 reserved;
181 };
182
183 enum nv_adma_regbits {
184 CMDEND = (1 << 15), /* end of command list */
185 WNB = (1 << 14), /* wait-not-BSY */
186 IGN = (1 << 13), /* ignore this entry */
187 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
188 DA2 = (1 << (2 + 8)),
189 DA1 = (1 << (1 + 8)),
190 DA0 = (1 << (0 + 8)),
191 };
192
193 /* ADMA Command Parameter Block
194 The first 5 SG segments are stored inside the Command Parameter Block itself.
195 If there are more than 5 segments the remainder are stored in a separate
196 memory area indicated by next_aprd. */
197 struct nv_adma_cpb {
198 u8 resp_flags; /* 0 */
199 u8 reserved1; /* 1 */
200 u8 ctl_flags; /* 2 */
201 /* len is length of taskfile in 64 bit words */
202 u8 len; /* 3 */
203 u8 tag; /* 4 */
204 u8 next_cpb_idx; /* 5 */
205 __le16 reserved2; /* 6-7 */
206 __le16 tf[12]; /* 8-31 */
207 struct nv_adma_prd aprd[5]; /* 32-111 */
208 __le64 next_aprd; /* 112-119 */
209 __le64 reserved3; /* 120-127 */
210 };
211
212
213 struct nv_adma_port_priv {
214 struct nv_adma_cpb *cpb;
215 dma_addr_t cpb_dma;
216 struct nv_adma_prd *aprd;
217 dma_addr_t aprd_dma;
218 void __iomem * ctl_block;
219 void __iomem * gen_block;
220 void __iomem * notifier_clear_block;
221 u8 flags;
222 int last_issue_ncq;
223 };
224
225 struct nv_host_priv {
226 unsigned long type;
227 };
228
229 #define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & ( 1 << (19 + (12 * (PORT)))))
230
231 static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
232 #ifdef CONFIG_PM
233 static int nv_pci_device_resume(struct pci_dev *pdev);
234 #endif
235 static void nv_ck804_host_stop(struct ata_host *host);
236 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
237 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
238 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
239 static int nv_scr_read (struct ata_port *ap, unsigned int sc_reg, u32 *val);
240 static int nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
241
242 static void nv_nf2_freeze(struct ata_port *ap);
243 static void nv_nf2_thaw(struct ata_port *ap);
244 static void nv_ck804_freeze(struct ata_port *ap);
245 static void nv_ck804_thaw(struct ata_port *ap);
246 static void nv_error_handler(struct ata_port *ap);
247 static int nv_adma_slave_config(struct scsi_device *sdev);
248 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
249 static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
250 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
251 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
252 static void nv_adma_irq_clear(struct ata_port *ap);
253 static int nv_adma_port_start(struct ata_port *ap);
254 static void nv_adma_port_stop(struct ata_port *ap);
255 #ifdef CONFIG_PM
256 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
257 static int nv_adma_port_resume(struct ata_port *ap);
258 #endif
259 static void nv_adma_freeze(struct ata_port *ap);
260 static void nv_adma_thaw(struct ata_port *ap);
261 static void nv_adma_error_handler(struct ata_port *ap);
262 static void nv_adma_host_stop(struct ata_host *host);
263 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
264 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
265
266 enum nv_host_type
267 {
268 GENERIC,
269 NFORCE2,
270 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
271 CK804,
272 ADMA
273 };
274
275 static const struct pci_device_id nv_pci_tbl[] = {
276 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
277 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
278 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
279 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
280 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
281 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
282 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
283 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), GENERIC },
284 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), GENERIC },
285 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), GENERIC },
286 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), GENERIC },
287 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
288 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
289 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
290
291 { } /* terminate list */
292 };
293
294 static struct pci_driver nv_pci_driver = {
295 .name = DRV_NAME,
296 .id_table = nv_pci_tbl,
297 .probe = nv_init_one,
298 #ifdef CONFIG_PM
299 .suspend = ata_pci_device_suspend,
300 .resume = nv_pci_device_resume,
301 #endif
302 .remove = ata_pci_remove_one,
303 };
304
305 static struct scsi_host_template nv_sht = {
306 .module = THIS_MODULE,
307 .name = DRV_NAME,
308 .ioctl = ata_scsi_ioctl,
309 .queuecommand = ata_scsi_queuecmd,
310 .can_queue = ATA_DEF_QUEUE,
311 .this_id = ATA_SHT_THIS_ID,
312 .sg_tablesize = LIBATA_MAX_PRD,
313 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
314 .emulated = ATA_SHT_EMULATED,
315 .use_clustering = ATA_SHT_USE_CLUSTERING,
316 .proc_name = DRV_NAME,
317 .dma_boundary = ATA_DMA_BOUNDARY,
318 .slave_configure = ata_scsi_slave_config,
319 .slave_destroy = ata_scsi_slave_destroy,
320 .bios_param = ata_std_bios_param,
321 };
322
323 static struct scsi_host_template nv_adma_sht = {
324 .module = THIS_MODULE,
325 .name = DRV_NAME,
326 .ioctl = ata_scsi_ioctl,
327 .queuecommand = ata_scsi_queuecmd,
328 .change_queue_depth = ata_scsi_change_queue_depth,
329 .can_queue = NV_ADMA_MAX_CPBS,
330 .this_id = ATA_SHT_THIS_ID,
331 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
332 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
333 .emulated = ATA_SHT_EMULATED,
334 .use_clustering = ATA_SHT_USE_CLUSTERING,
335 .proc_name = DRV_NAME,
336 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
337 .slave_configure = nv_adma_slave_config,
338 .slave_destroy = ata_scsi_slave_destroy,
339 .bios_param = ata_std_bios_param,
340 };
341
342 static const struct ata_port_operations nv_generic_ops = {
343 .port_disable = ata_port_disable,
344 .tf_load = ata_tf_load,
345 .tf_read = ata_tf_read,
346 .exec_command = ata_exec_command,
347 .check_status = ata_check_status,
348 .dev_select = ata_std_dev_select,
349 .bmdma_setup = ata_bmdma_setup,
350 .bmdma_start = ata_bmdma_start,
351 .bmdma_stop = ata_bmdma_stop,
352 .bmdma_status = ata_bmdma_status,
353 .qc_prep = ata_qc_prep,
354 .qc_issue = ata_qc_issue_prot,
355 .freeze = ata_bmdma_freeze,
356 .thaw = ata_bmdma_thaw,
357 .error_handler = nv_error_handler,
358 .post_internal_cmd = ata_bmdma_post_internal_cmd,
359 .data_xfer = ata_data_xfer,
360 .irq_clear = ata_bmdma_irq_clear,
361 .irq_on = ata_irq_on,
362 .irq_ack = ata_irq_ack,
363 .scr_read = nv_scr_read,
364 .scr_write = nv_scr_write,
365 .port_start = ata_port_start,
366 };
367
368 static const struct ata_port_operations nv_nf2_ops = {
369 .port_disable = ata_port_disable,
370 .tf_load = ata_tf_load,
371 .tf_read = ata_tf_read,
372 .exec_command = ata_exec_command,
373 .check_status = ata_check_status,
374 .dev_select = ata_std_dev_select,
375 .bmdma_setup = ata_bmdma_setup,
376 .bmdma_start = ata_bmdma_start,
377 .bmdma_stop = ata_bmdma_stop,
378 .bmdma_status = ata_bmdma_status,
379 .qc_prep = ata_qc_prep,
380 .qc_issue = ata_qc_issue_prot,
381 .freeze = nv_nf2_freeze,
382 .thaw = nv_nf2_thaw,
383 .error_handler = nv_error_handler,
384 .post_internal_cmd = ata_bmdma_post_internal_cmd,
385 .data_xfer = ata_data_xfer,
386 .irq_clear = ata_bmdma_irq_clear,
387 .irq_on = ata_irq_on,
388 .irq_ack = ata_irq_ack,
389 .scr_read = nv_scr_read,
390 .scr_write = nv_scr_write,
391 .port_start = ata_port_start,
392 };
393
394 static const struct ata_port_operations nv_ck804_ops = {
395 .port_disable = ata_port_disable,
396 .tf_load = ata_tf_load,
397 .tf_read = ata_tf_read,
398 .exec_command = ata_exec_command,
399 .check_status = ata_check_status,
400 .dev_select = ata_std_dev_select,
401 .bmdma_setup = ata_bmdma_setup,
402 .bmdma_start = ata_bmdma_start,
403 .bmdma_stop = ata_bmdma_stop,
404 .bmdma_status = ata_bmdma_status,
405 .qc_prep = ata_qc_prep,
406 .qc_issue = ata_qc_issue_prot,
407 .freeze = nv_ck804_freeze,
408 .thaw = nv_ck804_thaw,
409 .error_handler = nv_error_handler,
410 .post_internal_cmd = ata_bmdma_post_internal_cmd,
411 .data_xfer = ata_data_xfer,
412 .irq_clear = ata_bmdma_irq_clear,
413 .irq_on = ata_irq_on,
414 .irq_ack = ata_irq_ack,
415 .scr_read = nv_scr_read,
416 .scr_write = nv_scr_write,
417 .port_start = ata_port_start,
418 .host_stop = nv_ck804_host_stop,
419 };
420
421 static const struct ata_port_operations nv_adma_ops = {
422 .port_disable = ata_port_disable,
423 .tf_load = ata_tf_load,
424 .tf_read = nv_adma_tf_read,
425 .check_atapi_dma = nv_adma_check_atapi_dma,
426 .exec_command = ata_exec_command,
427 .check_status = ata_check_status,
428 .dev_select = ata_std_dev_select,
429 .bmdma_setup = ata_bmdma_setup,
430 .bmdma_start = ata_bmdma_start,
431 .bmdma_stop = ata_bmdma_stop,
432 .bmdma_status = ata_bmdma_status,
433 .qc_prep = nv_adma_qc_prep,
434 .qc_issue = nv_adma_qc_issue,
435 .freeze = nv_adma_freeze,
436 .thaw = nv_adma_thaw,
437 .error_handler = nv_adma_error_handler,
438 .post_internal_cmd = nv_adma_post_internal_cmd,
439 .data_xfer = ata_data_xfer,
440 .irq_clear = nv_adma_irq_clear,
441 .irq_on = ata_irq_on,
442 .irq_ack = ata_irq_ack,
443 .scr_read = nv_scr_read,
444 .scr_write = nv_scr_write,
445 .port_start = nv_adma_port_start,
446 .port_stop = nv_adma_port_stop,
447 #ifdef CONFIG_PM
448 .port_suspend = nv_adma_port_suspend,
449 .port_resume = nv_adma_port_resume,
450 #endif
451 .host_stop = nv_adma_host_stop,
452 };
453
454 static const struct ata_port_info nv_port_info[] = {
455 /* generic */
456 {
457 .sht = &nv_sht,
458 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
459 ATA_FLAG_HRST_TO_RESUME,
460 .pio_mask = NV_PIO_MASK,
461 .mwdma_mask = NV_MWDMA_MASK,
462 .udma_mask = NV_UDMA_MASK,
463 .port_ops = &nv_generic_ops,
464 .irq_handler = nv_generic_interrupt,
465 },
466 /* nforce2/3 */
467 {
468 .sht = &nv_sht,
469 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
470 ATA_FLAG_HRST_TO_RESUME,
471 .pio_mask = NV_PIO_MASK,
472 .mwdma_mask = NV_MWDMA_MASK,
473 .udma_mask = NV_UDMA_MASK,
474 .port_ops = &nv_nf2_ops,
475 .irq_handler = nv_nf2_interrupt,
476 },
477 /* ck804 */
478 {
479 .sht = &nv_sht,
480 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
481 ATA_FLAG_HRST_TO_RESUME,
482 .pio_mask = NV_PIO_MASK,
483 .mwdma_mask = NV_MWDMA_MASK,
484 .udma_mask = NV_UDMA_MASK,
485 .port_ops = &nv_ck804_ops,
486 .irq_handler = nv_ck804_interrupt,
487 },
488 /* ADMA */
489 {
490 .sht = &nv_adma_sht,
491 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
492 ATA_FLAG_HRST_TO_RESUME |
493 ATA_FLAG_MMIO | ATA_FLAG_NCQ,
494 .pio_mask = NV_PIO_MASK,
495 .mwdma_mask = NV_MWDMA_MASK,
496 .udma_mask = NV_UDMA_MASK,
497 .port_ops = &nv_adma_ops,
498 .irq_handler = nv_adma_interrupt,
499 },
500 };
501
502 MODULE_AUTHOR("NVIDIA");
503 MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
504 MODULE_LICENSE("GPL");
505 MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
506 MODULE_VERSION(DRV_VERSION);
507
508 static int adma_enabled = 1;
509
510 static void nv_adma_register_mode(struct ata_port *ap)
511 {
512 struct nv_adma_port_priv *pp = ap->private_data;
513 void __iomem *mmio = pp->ctl_block;
514 u16 tmp, status;
515 int count = 0;
516
517 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
518 return;
519
520 status = readw(mmio + NV_ADMA_STAT);
521 while(!(status & NV_ADMA_STAT_IDLE) && count < 20) {
522 ndelay(50);
523 status = readw(mmio + NV_ADMA_STAT);
524 count++;
525 }
526 if(count == 20)
527 ata_port_printk(ap, KERN_WARNING,
528 "timeout waiting for ADMA IDLE, stat=0x%hx\n",
529 status);
530
531 tmp = readw(mmio + NV_ADMA_CTL);
532 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
533
534 count = 0;
535 status = readw(mmio + NV_ADMA_STAT);
536 while(!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
537 ndelay(50);
538 status = readw(mmio + NV_ADMA_STAT);
539 count++;
540 }
541 if(count == 20)
542 ata_port_printk(ap, KERN_WARNING,
543 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
544 status);
545
546 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
547 }
548
549 static void nv_adma_mode(struct ata_port *ap)
550 {
551 struct nv_adma_port_priv *pp = ap->private_data;
552 void __iomem *mmio = pp->ctl_block;
553 u16 tmp, status;
554 int count = 0;
555
556 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
557 return;
558
559 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
560
561 tmp = readw(mmio + NV_ADMA_CTL);
562 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
563
564 status = readw(mmio + NV_ADMA_STAT);
565 while(((status & NV_ADMA_STAT_LEGACY) ||
566 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
567 ndelay(50);
568 status = readw(mmio + NV_ADMA_STAT);
569 count++;
570 }
571 if(count == 20)
572 ata_port_printk(ap, KERN_WARNING,
573 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
574 status);
575
576 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
577 }
578
579 static int nv_adma_slave_config(struct scsi_device *sdev)
580 {
581 struct ata_port *ap = ata_shost_to_port(sdev->host);
582 struct nv_adma_port_priv *pp = ap->private_data;
583 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
584 u64 bounce_limit;
585 unsigned long segment_boundary;
586 unsigned short sg_tablesize;
587 int rc;
588 int adma_enable;
589 u32 current_reg, new_reg, config_mask;
590
591 rc = ata_scsi_slave_config(sdev);
592
593 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
594 /* Not a proper libata device, ignore */
595 return rc;
596
597 if (ap->device[sdev->id].class == ATA_DEV_ATAPI) {
598 /*
599 * NVIDIA reports that ADMA mode does not support ATAPI commands.
600 * Therefore ATAPI commands are sent through the legacy interface.
601 * However, the legacy interface only supports 32-bit DMA.
602 * Restrict DMA parameters as required by the legacy interface
603 * when an ATAPI device is connected.
604 */
605 bounce_limit = ATA_DMA_MASK;
606 segment_boundary = ATA_DMA_BOUNDARY;
607 /* Subtract 1 since an extra entry may be needed for padding, see
608 libata-scsi.c */
609 sg_tablesize = LIBATA_MAX_PRD - 1;
610
611 /* Since the legacy DMA engine is in use, we need to disable ADMA
612 on the port. */
613 adma_enable = 0;
614 nv_adma_register_mode(ap);
615 }
616 else {
617 bounce_limit = *ap->dev->dma_mask;
618 segment_boundary = NV_ADMA_DMA_BOUNDARY;
619 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
620 adma_enable = 1;
621 }
622
623 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &current_reg);
624
625 if(ap->port_no == 1)
626 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
627 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
628 else
629 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
630 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
631
632 if(adma_enable) {
633 new_reg = current_reg | config_mask;
634 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
635 }
636 else {
637 new_reg = current_reg & ~config_mask;
638 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
639 }
640
641 if(current_reg != new_reg)
642 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
643
644 blk_queue_bounce_limit(sdev->request_queue, bounce_limit);
645 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
646 blk_queue_max_hw_segments(sdev->request_queue, sg_tablesize);
647 ata_port_printk(ap, KERN_INFO,
648 "bounce limit 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
649 (unsigned long long)bounce_limit, segment_boundary, sg_tablesize);
650 return rc;
651 }
652
653 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
654 {
655 struct nv_adma_port_priv *pp = qc->ap->private_data;
656 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
657 }
658
659 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
660 {
661 /* Since commands where a result TF is requested are not
662 executed in ADMA mode, the only time this function will be called
663 in ADMA mode will be if a command fails. In this case we
664 don't care about going into register mode with ADMA commands
665 pending, as the commands will all shortly be aborted anyway. */
666 nv_adma_register_mode(ap);
667
668 ata_tf_read(ap, tf);
669 }
670
671 static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
672 {
673 unsigned int idx = 0;
674
675 if(tf->flags & ATA_TFLAG_ISADDR) {
676 if (tf->flags & ATA_TFLAG_LBA48) {
677 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
678 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
679 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
680 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
681 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
682 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
683 } else
684 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
685
686 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
687 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
688 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
689 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
690 }
691
692 if(tf->flags & ATA_TFLAG_DEVICE)
693 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
694
695 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
696
697 while(idx < 12)
698 cpb[idx++] = cpu_to_le16(IGN);
699
700 return idx;
701 }
702
703 static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
704 {
705 struct nv_adma_port_priv *pp = ap->private_data;
706 u8 flags = pp->cpb[cpb_num].resp_flags;
707
708 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
709
710 if (unlikely((force_err ||
711 flags & (NV_CPB_RESP_ATA_ERR |
712 NV_CPB_RESP_CMD_ERR |
713 NV_CPB_RESP_CPB_ERR)))) {
714 struct ata_eh_info *ehi = &ap->eh_info;
715 int freeze = 0;
716
717 ata_ehi_clear_desc(ehi);
718 __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags );
719 if (flags & NV_CPB_RESP_ATA_ERR) {
720 ata_ehi_push_desc(ehi, "ATA error");
721 ehi->err_mask |= AC_ERR_DEV;
722 } else if (flags & NV_CPB_RESP_CMD_ERR) {
723 ata_ehi_push_desc(ehi, "CMD error");
724 ehi->err_mask |= AC_ERR_DEV;
725 } else if (flags & NV_CPB_RESP_CPB_ERR) {
726 ata_ehi_push_desc(ehi, "CPB error");
727 ehi->err_mask |= AC_ERR_SYSTEM;
728 freeze = 1;
729 } else {
730 /* notifier error, but no error in CPB flags? */
731 ata_ehi_push_desc(ehi, "unknown");
732 ehi->err_mask |= AC_ERR_OTHER;
733 freeze = 1;
734 }
735 /* Kill all commands. EH will determine what actually failed. */
736 if (freeze)
737 ata_port_freeze(ap);
738 else
739 ata_port_abort(ap);
740 return 1;
741 }
742
743 if (likely(flags & NV_CPB_RESP_DONE)) {
744 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num);
745 VPRINTK("CPB flags done, flags=0x%x\n", flags);
746 if (likely(qc)) {
747 DPRINTK("Completing qc from tag %d\n",cpb_num);
748 ata_qc_complete(qc);
749 } else {
750 struct ata_eh_info *ehi = &ap->eh_info;
751 /* Notifier bits set without a command may indicate the drive
752 is misbehaving. Raise host state machine violation on this
753 condition. */
754 ata_port_printk(ap, KERN_ERR, "notifier for tag %d with no command?\n",
755 cpb_num);
756 ehi->err_mask |= AC_ERR_HSM;
757 ehi->action |= ATA_EH_SOFTRESET;
758 ata_port_freeze(ap);
759 return 1;
760 }
761 }
762 return 0;
763 }
764
765 static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
766 {
767 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
768
769 /* freeze if hotplugged */
770 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
771 ata_port_freeze(ap);
772 return 1;
773 }
774
775 /* bail out if not our interrupt */
776 if (!(irq_stat & NV_INT_DEV))
777 return 0;
778
779 /* DEV interrupt w/ no active qc? */
780 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
781 ata_check_status(ap);
782 return 1;
783 }
784
785 /* handle interrupt */
786 return ata_host_intr(ap, qc);
787 }
788
789 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
790 {
791 struct ata_host *host = dev_instance;
792 int i, handled = 0;
793 u32 notifier_clears[2];
794
795 spin_lock(&host->lock);
796
797 for (i = 0; i < host->n_ports; i++) {
798 struct ata_port *ap = host->ports[i];
799 notifier_clears[i] = 0;
800
801 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
802 struct nv_adma_port_priv *pp = ap->private_data;
803 void __iomem *mmio = pp->ctl_block;
804 u16 status;
805 u32 gen_ctl;
806 u32 notifier, notifier_error;
807
808 /* if ADMA is disabled, use standard ata interrupt handler */
809 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
810 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
811 >> (NV_INT_PORT_SHIFT * i);
812 handled += nv_host_intr(ap, irq_stat);
813 continue;
814 }
815
816 /* if in ATA register mode, check for standard interrupts */
817 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
818 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
819 >> (NV_INT_PORT_SHIFT * i);
820 if(ata_tag_valid(ap->active_tag))
821 /** NV_INT_DEV indication seems unreliable at times
822 at least in ADMA mode. Force it on always when a
823 command is active, to prevent losing interrupts. */
824 irq_stat |= NV_INT_DEV;
825 handled += nv_host_intr(ap, irq_stat);
826 }
827
828 notifier = readl(mmio + NV_ADMA_NOTIFIER);
829 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
830 notifier_clears[i] = notifier | notifier_error;
831
832 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
833
834 if( !NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
835 !notifier_error)
836 /* Nothing to do */
837 continue;
838
839 status = readw(mmio + NV_ADMA_STAT);
840
841 /* Clear status. Ensure the controller sees the clearing before we start
842 looking at any of the CPB statuses, so that any CPB completions after
843 this point in the handler will raise another interrupt. */
844 writew(status, mmio + NV_ADMA_STAT);
845 readw(mmio + NV_ADMA_STAT); /* flush posted write */
846 rmb();
847
848 handled++; /* irq handled if we got here */
849
850 /* freeze if hotplugged or controller error */
851 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
852 NV_ADMA_STAT_HOTUNPLUG |
853 NV_ADMA_STAT_TIMEOUT |
854 NV_ADMA_STAT_SERROR))) {
855 struct ata_eh_info *ehi = &ap->eh_info;
856
857 ata_ehi_clear_desc(ehi);
858 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status );
859 if (status & NV_ADMA_STAT_TIMEOUT) {
860 ehi->err_mask |= AC_ERR_SYSTEM;
861 ata_ehi_push_desc(ehi, "timeout");
862 } else if (status & NV_ADMA_STAT_HOTPLUG) {
863 ata_ehi_hotplugged(ehi);
864 ata_ehi_push_desc(ehi, "hotplug");
865 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
866 ata_ehi_hotplugged(ehi);
867 ata_ehi_push_desc(ehi, "hot unplug");
868 } else if (status & NV_ADMA_STAT_SERROR) {
869 /* let libata analyze SError and figure out the cause */
870 ata_ehi_push_desc(ehi, "SError");
871 } else
872 ata_ehi_push_desc(ehi, "unknown");
873 ata_port_freeze(ap);
874 continue;
875 }
876
877 if (status & (NV_ADMA_STAT_DONE |
878 NV_ADMA_STAT_CPBERR)) {
879 u32 check_commands;
880 int pos, error = 0;
881
882 if(ata_tag_valid(ap->active_tag))
883 check_commands = 1 << ap->active_tag;
884 else
885 check_commands = ap->sactive;
886
887 /** Check CPBs for completed commands */
888 while ((pos = ffs(check_commands)) && !error) {
889 pos--;
890 error = nv_adma_check_cpb(ap, pos,
891 notifier_error & (1 << pos) );
892 check_commands &= ~(1 << pos );
893 }
894 }
895 }
896 }
897
898 if(notifier_clears[0] || notifier_clears[1]) {
899 /* Note: Both notifier clear registers must be written
900 if either is set, even if one is zero, according to NVIDIA. */
901 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
902 writel(notifier_clears[0], pp->notifier_clear_block);
903 pp = host->ports[1]->private_data;
904 writel(notifier_clears[1], pp->notifier_clear_block);
905 }
906
907 spin_unlock(&host->lock);
908
909 return IRQ_RETVAL(handled);
910 }
911
912 static void nv_adma_freeze(struct ata_port *ap)
913 {
914 struct nv_adma_port_priv *pp = ap->private_data;
915 void __iomem *mmio = pp->ctl_block;
916 u16 tmp;
917
918 nv_ck804_freeze(ap);
919
920 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
921 return;
922
923 /* clear any outstanding CK804 notifications */
924 writeb( NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
925 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
926
927 /* Disable interrupt */
928 tmp = readw(mmio + NV_ADMA_CTL);
929 writew( tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
930 mmio + NV_ADMA_CTL);
931 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
932 }
933
934 static void nv_adma_thaw(struct ata_port *ap)
935 {
936 struct nv_adma_port_priv *pp = ap->private_data;
937 void __iomem *mmio = pp->ctl_block;
938 u16 tmp;
939
940 nv_ck804_thaw(ap);
941
942 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
943 return;
944
945 /* Enable interrupt */
946 tmp = readw(mmio + NV_ADMA_CTL);
947 writew( tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
948 mmio + NV_ADMA_CTL);
949 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
950 }
951
952 static void nv_adma_irq_clear(struct ata_port *ap)
953 {
954 struct nv_adma_port_priv *pp = ap->private_data;
955 void __iomem *mmio = pp->ctl_block;
956 u32 notifier_clears[2];
957
958 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
959 ata_bmdma_irq_clear(ap);
960 return;
961 }
962
963 /* clear any outstanding CK804 notifications */
964 writeb( NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
965 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
966
967 /* clear ADMA status */
968 writew(0xffff, mmio + NV_ADMA_STAT);
969
970 /* clear notifiers - note both ports need to be written with
971 something even though we are only clearing on one */
972 if (ap->port_no == 0) {
973 notifier_clears[0] = 0xFFFFFFFF;
974 notifier_clears[1] = 0;
975 } else {
976 notifier_clears[0] = 0;
977 notifier_clears[1] = 0xFFFFFFFF;
978 }
979 pp = ap->host->ports[0]->private_data;
980 writel(notifier_clears[0], pp->notifier_clear_block);
981 pp = ap->host->ports[1]->private_data;
982 writel(notifier_clears[1], pp->notifier_clear_block);
983 }
984
985 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
986 {
987 struct nv_adma_port_priv *pp = qc->ap->private_data;
988
989 if(pp->flags & NV_ADMA_PORT_REGISTER_MODE)
990 ata_bmdma_post_internal_cmd(qc);
991 }
992
993 static int nv_adma_port_start(struct ata_port *ap)
994 {
995 struct device *dev = ap->host->dev;
996 struct nv_adma_port_priv *pp;
997 int rc;
998 void *mem;
999 dma_addr_t mem_dma;
1000 void __iomem *mmio;
1001 u16 tmp;
1002
1003 VPRINTK("ENTER\n");
1004
1005 rc = ata_port_start(ap);
1006 if (rc)
1007 return rc;
1008
1009 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1010 if (!pp)
1011 return -ENOMEM;
1012
1013 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
1014 ap->port_no * NV_ADMA_PORT_SIZE;
1015 pp->ctl_block = mmio;
1016 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
1017 pp->notifier_clear_block = pp->gen_block +
1018 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1019
1020 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1021 &mem_dma, GFP_KERNEL);
1022 if (!mem)
1023 return -ENOMEM;
1024 memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ);
1025
1026 /*
1027 * First item in chunk of DMA memory:
1028 * 128-byte command parameter block (CPB)
1029 * one for each command tag
1030 */
1031 pp->cpb = mem;
1032 pp->cpb_dma = mem_dma;
1033
1034 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1035 writel((mem_dma >> 16 ) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1036
1037 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1038 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1039
1040 /*
1041 * Second item: block of ADMA_SGTBL_LEN s/g entries
1042 */
1043 pp->aprd = mem;
1044 pp->aprd_dma = mem_dma;
1045
1046 ap->private_data = pp;
1047
1048 /* clear any outstanding interrupt conditions */
1049 writew(0xffff, mmio + NV_ADMA_STAT);
1050
1051 /* initialize port variables */
1052 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1053
1054 /* clear CPB fetch count */
1055 writew(0, mmio + NV_ADMA_CPB_COUNT);
1056
1057 /* clear GO for register mode, enable interrupt */
1058 tmp = readw(mmio + NV_ADMA_CTL);
1059 writew( (tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1060 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1061
1062 tmp = readw(mmio + NV_ADMA_CTL);
1063 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1064 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1065 udelay(1);
1066 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1067 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1068
1069 return 0;
1070 }
1071
1072 static void nv_adma_port_stop(struct ata_port *ap)
1073 {
1074 struct nv_adma_port_priv *pp = ap->private_data;
1075 void __iomem *mmio = pp->ctl_block;
1076
1077 VPRINTK("ENTER\n");
1078 writew(0, mmio + NV_ADMA_CTL);
1079 }
1080
1081 #ifdef CONFIG_PM
1082 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1083 {
1084 struct nv_adma_port_priv *pp = ap->private_data;
1085 void __iomem *mmio = pp->ctl_block;
1086
1087 /* Go to register mode - clears GO */
1088 nv_adma_register_mode(ap);
1089
1090 /* clear CPB fetch count */
1091 writew(0, mmio + NV_ADMA_CPB_COUNT);
1092
1093 /* disable interrupt, shut down port */
1094 writew(0, mmio + NV_ADMA_CTL);
1095
1096 return 0;
1097 }
1098
1099 static int nv_adma_port_resume(struct ata_port *ap)
1100 {
1101 struct nv_adma_port_priv *pp = ap->private_data;
1102 void __iomem *mmio = pp->ctl_block;
1103 u16 tmp;
1104
1105 /* set CPB block location */
1106 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1107 writel((pp->cpb_dma >> 16 ) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1108
1109 /* clear any outstanding interrupt conditions */
1110 writew(0xffff, mmio + NV_ADMA_STAT);
1111
1112 /* initialize port variables */
1113 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1114
1115 /* clear CPB fetch count */
1116 writew(0, mmio + NV_ADMA_CPB_COUNT);
1117
1118 /* clear GO for register mode, enable interrupt */
1119 tmp = readw(mmio + NV_ADMA_CTL);
1120 writew( (tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1121 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1122
1123 tmp = readw(mmio + NV_ADMA_CTL);
1124 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1125 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1126 udelay(1);
1127 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1128 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1129
1130 return 0;
1131 }
1132 #endif
1133
1134 static void nv_adma_setup_port(struct ata_port *ap)
1135 {
1136 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1137 struct ata_ioports *ioport = &ap->ioaddr;
1138
1139 VPRINTK("ENTER\n");
1140
1141 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
1142
1143 ioport->cmd_addr = mmio;
1144 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
1145 ioport->error_addr =
1146 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1147 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1148 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1149 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1150 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1151 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
1152 ioport->status_addr =
1153 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
1154 ioport->altstatus_addr =
1155 ioport->ctl_addr = mmio + 0x20;
1156 }
1157
1158 static int nv_adma_host_init(struct ata_host *host)
1159 {
1160 struct pci_dev *pdev = to_pci_dev(host->dev);
1161 unsigned int i;
1162 u32 tmp32;
1163
1164 VPRINTK("ENTER\n");
1165
1166 /* enable ADMA on the ports */
1167 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1168 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1169 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1170 NV_MCP_SATA_CFG_20_PORT1_EN |
1171 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1172
1173 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1174
1175 for (i = 0; i < host->n_ports; i++)
1176 nv_adma_setup_port(host->ports[i]);
1177
1178 return 0;
1179 }
1180
1181 static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1182 struct scatterlist *sg,
1183 int idx,
1184 struct nv_adma_prd *aprd)
1185 {
1186 u8 flags = 0;
1187 if (qc->tf.flags & ATA_TFLAG_WRITE)
1188 flags |= NV_APRD_WRITE;
1189 if (idx == qc->n_elem - 1)
1190 flags |= NV_APRD_END;
1191 else if (idx != 4)
1192 flags |= NV_APRD_CONT;
1193
1194 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1195 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
1196 aprd->flags = flags;
1197 aprd->packet_len = 0;
1198 }
1199
1200 static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1201 {
1202 struct nv_adma_port_priv *pp = qc->ap->private_data;
1203 unsigned int idx;
1204 struct nv_adma_prd *aprd;
1205 struct scatterlist *sg;
1206
1207 VPRINTK("ENTER\n");
1208
1209 idx = 0;
1210
1211 ata_for_each_sg(sg, qc) {
1212 aprd = (idx < 5) ? &cpb->aprd[idx] : &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (idx-5)];
1213 nv_adma_fill_aprd(qc, sg, idx, aprd);
1214 idx++;
1215 }
1216 if (idx > 5)
1217 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag)));
1218 else
1219 cpb->next_aprd = cpu_to_le64(0);
1220 }
1221
1222 static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1223 {
1224 struct nv_adma_port_priv *pp = qc->ap->private_data;
1225
1226 /* ADMA engine can only be used for non-ATAPI DMA commands,
1227 or interrupt-driven no-data commands, where a result taskfile
1228 is not required. */
1229 if((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
1230 (qc->tf.flags & ATA_TFLAG_POLLING) ||
1231 (qc->flags & ATA_QCFLAG_RESULT_TF))
1232 return 1;
1233
1234 if((qc->flags & ATA_QCFLAG_DMAMAP) ||
1235 (qc->tf.protocol == ATA_PROT_NODATA))
1236 return 0;
1237
1238 return 1;
1239 }
1240
1241 static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1242 {
1243 struct nv_adma_port_priv *pp = qc->ap->private_data;
1244 struct nv_adma_cpb *cpb = &pp->cpb[qc->tag];
1245 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
1246 NV_CPB_CTL_IEN;
1247
1248 if (nv_adma_use_reg_mode(qc)) {
1249 nv_adma_register_mode(qc->ap);
1250 ata_qc_prep(qc);
1251 return;
1252 }
1253
1254 cpb->resp_flags = NV_CPB_RESP_DONE;
1255 wmb();
1256 cpb->ctl_flags = 0;
1257 wmb();
1258
1259 cpb->len = 3;
1260 cpb->tag = qc->tag;
1261 cpb->next_cpb_idx = 0;
1262
1263 /* turn on NCQ flags for NCQ commands */
1264 if (qc->tf.protocol == ATA_PROT_NCQ)
1265 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1266
1267 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1268
1269 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1270
1271 if(qc->flags & ATA_QCFLAG_DMAMAP) {
1272 nv_adma_fill_sg(qc, cpb);
1273 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1274 } else
1275 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
1276
1277 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID until we are
1278 finished filling in all of the contents */
1279 wmb();
1280 cpb->ctl_flags = ctl_flags;
1281 wmb();
1282 cpb->resp_flags = 0;
1283 }
1284
1285 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1286 {
1287 struct nv_adma_port_priv *pp = qc->ap->private_data;
1288 void __iomem *mmio = pp->ctl_block;
1289 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
1290
1291 VPRINTK("ENTER\n");
1292
1293 if (nv_adma_use_reg_mode(qc)) {
1294 /* use ATA register mode */
1295 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
1296 nv_adma_register_mode(qc->ap);
1297 return ata_qc_issue_prot(qc);
1298 } else
1299 nv_adma_mode(qc->ap);
1300
1301 /* write append register, command tag in lower 8 bits
1302 and (number of cpbs to append -1) in top 8 bits */
1303 wmb();
1304
1305 if(curr_ncq != pp->last_issue_ncq) {
1306 /* Seems to need some delay before switching between NCQ and non-NCQ
1307 commands, else we get command timeouts and such. */
1308 udelay(20);
1309 pp->last_issue_ncq = curr_ncq;
1310 }
1311
1312 writew(qc->tag, mmio + NV_ADMA_APPEND);
1313
1314 DPRINTK("Issued tag %u\n",qc->tag);
1315
1316 return 0;
1317 }
1318
1319 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1320 {
1321 struct ata_host *host = dev_instance;
1322 unsigned int i;
1323 unsigned int handled = 0;
1324 unsigned long flags;
1325
1326 spin_lock_irqsave(&host->lock, flags);
1327
1328 for (i = 0; i < host->n_ports; i++) {
1329 struct ata_port *ap;
1330
1331 ap = host->ports[i];
1332 if (ap &&
1333 !(ap->flags & ATA_FLAG_DISABLED)) {
1334 struct ata_queued_cmd *qc;
1335
1336 qc = ata_qc_from_tag(ap, ap->active_tag);
1337 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
1338 handled += ata_host_intr(ap, qc);
1339 else
1340 // No request pending? Clear interrupt status
1341 // anyway, in case there's one pending.
1342 ap->ops->check_status(ap);
1343 }
1344
1345 }
1346
1347 spin_unlock_irqrestore(&host->lock, flags);
1348
1349 return IRQ_RETVAL(handled);
1350 }
1351
1352 static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
1353 {
1354 int i, handled = 0;
1355
1356 for (i = 0; i < host->n_ports; i++) {
1357 struct ata_port *ap = host->ports[i];
1358
1359 if (ap && !(ap->flags & ATA_FLAG_DISABLED))
1360 handled += nv_host_intr(ap, irq_stat);
1361
1362 irq_stat >>= NV_INT_PORT_SHIFT;
1363 }
1364
1365 return IRQ_RETVAL(handled);
1366 }
1367
1368 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
1369 {
1370 struct ata_host *host = dev_instance;
1371 u8 irq_stat;
1372 irqreturn_t ret;
1373
1374 spin_lock(&host->lock);
1375 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
1376 ret = nv_do_interrupt(host, irq_stat);
1377 spin_unlock(&host->lock);
1378
1379 return ret;
1380 }
1381
1382 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
1383 {
1384 struct ata_host *host = dev_instance;
1385 u8 irq_stat;
1386 irqreturn_t ret;
1387
1388 spin_lock(&host->lock);
1389 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1390 ret = nv_do_interrupt(host, irq_stat);
1391 spin_unlock(&host->lock);
1392
1393 return ret;
1394 }
1395
1396 static int nv_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
1397 {
1398 if (sc_reg > SCR_CONTROL)
1399 return -EINVAL;
1400
1401 *val = ioread32(ap->ioaddr.scr_addr + (sc_reg * 4));
1402 return 0;
1403 }
1404
1405 static int nv_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
1406 {
1407 if (sc_reg > SCR_CONTROL)
1408 return -EINVAL;
1409
1410 iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4));
1411 return 0;
1412 }
1413
1414 static void nv_nf2_freeze(struct ata_port *ap)
1415 {
1416 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1417 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1418 u8 mask;
1419
1420 mask = ioread8(scr_addr + NV_INT_ENABLE);
1421 mask &= ~(NV_INT_ALL << shift);
1422 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1423 }
1424
1425 static void nv_nf2_thaw(struct ata_port *ap)
1426 {
1427 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1428 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1429 u8 mask;
1430
1431 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
1432
1433 mask = ioread8(scr_addr + NV_INT_ENABLE);
1434 mask |= (NV_INT_MASK << shift);
1435 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1436 }
1437
1438 static void nv_ck804_freeze(struct ata_port *ap)
1439 {
1440 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1441 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1442 u8 mask;
1443
1444 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1445 mask &= ~(NV_INT_ALL << shift);
1446 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1447 }
1448
1449 static void nv_ck804_thaw(struct ata_port *ap)
1450 {
1451 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1452 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1453 u8 mask;
1454
1455 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1456
1457 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1458 mask |= (NV_INT_MASK << shift);
1459 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1460 }
1461
1462 static int nv_hardreset(struct ata_port *ap, unsigned int *class,
1463 unsigned long deadline)
1464 {
1465 unsigned int dummy;
1466
1467 /* SATA hardreset fails to retrieve proper device signature on
1468 * some controllers. Don't classify on hardreset. For more
1469 * info, see http://bugme.osdl.org/show_bug.cgi?id=3352
1470 */
1471 return sata_std_hardreset(ap, &dummy, deadline);
1472 }
1473
1474 static void nv_error_handler(struct ata_port *ap)
1475 {
1476 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
1477 nv_hardreset, ata_std_postreset);
1478 }
1479
1480 static void nv_adma_error_handler(struct ata_port *ap)
1481 {
1482 struct nv_adma_port_priv *pp = ap->private_data;
1483 if(!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
1484 void __iomem *mmio = pp->ctl_block;
1485 int i;
1486 u16 tmp;
1487
1488 if(ata_tag_valid(ap->active_tag) || ap->sactive) {
1489 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1490 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1491 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1492 u32 status = readw(mmio + NV_ADMA_STAT);
1493 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1494 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
1495
1496 ata_port_printk(ap, KERN_ERR, "EH in ADMA mode, notifier 0x%X "
1497 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1498 "next cpb count 0x%X next cpb idx 0x%x\n",
1499 notifier, notifier_error, gen_ctl, status,
1500 cpb_count, next_cpb_idx);
1501
1502 for( i=0;i<NV_ADMA_MAX_CPBS;i++) {
1503 struct nv_adma_cpb *cpb = &pp->cpb[i];
1504 if( (ata_tag_valid(ap->active_tag) && i == ap->active_tag) ||
1505 ap->sactive & (1 << i) )
1506 ata_port_printk(ap, KERN_ERR,
1507 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1508 i, cpb->ctl_flags, cpb->resp_flags);
1509 }
1510 }
1511
1512 /* Push us back into port register mode for error handling. */
1513 nv_adma_register_mode(ap);
1514
1515 /* Mark all of the CPBs as invalid to prevent them from being executed */
1516 for( i=0;i<NV_ADMA_MAX_CPBS;i++)
1517 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1518
1519 /* clear CPB fetch count */
1520 writew(0, mmio + NV_ADMA_CPB_COUNT);
1521
1522 /* Reset channel */
1523 tmp = readw(mmio + NV_ADMA_CTL);
1524 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1525 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1526 udelay(1);
1527 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1528 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1529 }
1530
1531 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
1532 nv_hardreset, ata_std_postreset);
1533 }
1534
1535 static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1536 {
1537 static int printed_version = 0;
1538 const struct ata_port_info *ppi[] = { NULL, NULL };
1539 struct ata_host *host;
1540 struct nv_host_priv *hpriv;
1541 int rc;
1542 u32 bar;
1543 void __iomem *base;
1544 unsigned long type = ent->driver_data;
1545
1546 // Make sure this is a SATA controller by counting the number of bars
1547 // (NVIDIA SATA controllers will always have six bars). Otherwise,
1548 // it's an IDE controller and we ignore it.
1549 for (bar=0; bar<6; bar++)
1550 if (pci_resource_start(pdev, bar) == 0)
1551 return -ENODEV;
1552
1553 if (!printed_version++)
1554 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1555
1556 rc = pcim_enable_device(pdev);
1557 if (rc)
1558 return rc;
1559
1560 /* determine type and allocate host */
1561 if (type >= CK804 && adma_enabled) {
1562 dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n");
1563 type = ADMA;
1564 }
1565
1566 ppi[0] = &nv_port_info[type];
1567 rc = ata_pci_prepare_sff_host(pdev, ppi, &host);
1568 if (rc)
1569 return rc;
1570
1571 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1572 if (!hpriv)
1573 return -ENOMEM;
1574 hpriv->type = type;
1575 host->private_data = hpriv;
1576
1577 /* set 64bit dma masks, may fail */
1578 if (type == ADMA) {
1579 if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0)
1580 pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1581 }
1582
1583 /* request and iomap NV_MMIO_BAR */
1584 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
1585 if (rc)
1586 return rc;
1587
1588 /* configure SCR access */
1589 base = host->iomap[NV_MMIO_BAR];
1590 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
1591 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
1592
1593 /* enable SATA space for CK804 */
1594 if (type >= CK804) {
1595 u8 regval;
1596
1597 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
1598 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1599 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1600 }
1601
1602 /* init ADMA */
1603 if (type == ADMA) {
1604 rc = nv_adma_host_init(host);
1605 if (rc)
1606 return rc;
1607 }
1608
1609 pci_set_master(pdev);
1610 return ata_host_activate(host, pdev->irq, ppi[0]->irq_handler,
1611 IRQF_SHARED, ppi[0]->sht);
1612 }
1613
1614 #ifdef CONFIG_PM
1615 static int nv_pci_device_resume(struct pci_dev *pdev)
1616 {
1617 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1618 struct nv_host_priv *hpriv = host->private_data;
1619 int rc;
1620
1621 rc = ata_pci_device_do_resume(pdev);
1622 if(rc)
1623 return rc;
1624
1625 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
1626 if(hpriv->type >= CK804) {
1627 u8 regval;
1628
1629 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
1630 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1631 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1632 }
1633 if(hpriv->type == ADMA) {
1634 u32 tmp32;
1635 struct nv_adma_port_priv *pp;
1636 /* enable/disable ADMA on the ports appropriately */
1637 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1638
1639 pp = host->ports[0]->private_data;
1640 if(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1641 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
1642 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
1643 else
1644 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
1645 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
1646 pp = host->ports[1]->private_data;
1647 if(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1648 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
1649 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1650 else
1651 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
1652 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1653
1654 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1655 }
1656 }
1657
1658 ata_host_resume(host);
1659
1660 return 0;
1661 }
1662 #endif
1663
1664 static void nv_ck804_host_stop(struct ata_host *host)
1665 {
1666 struct pci_dev *pdev = to_pci_dev(host->dev);
1667 u8 regval;
1668
1669 /* disable SATA space for CK804 */
1670 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
1671 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1672 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1673 }
1674
1675 static void nv_adma_host_stop(struct ata_host *host)
1676 {
1677 struct pci_dev *pdev = to_pci_dev(host->dev);
1678 u32 tmp32;
1679
1680 /* disable ADMA on the ports */
1681 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1682 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
1683 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1684 NV_MCP_SATA_CFG_20_PORT1_EN |
1685 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1686
1687 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1688
1689 nv_ck804_host_stop(host);
1690 }
1691
1692 static int __init nv_init(void)
1693 {
1694 return pci_register_driver(&nv_pci_driver);
1695 }
1696
1697 static void __exit nv_exit(void)
1698 {
1699 pci_unregister_driver(&nv_pci_driver);
1700 }
1701
1702 module_init(nv_init);
1703 module_exit(nv_exit);
1704 module_param_named(adma, adma_enabled, bool, 0444);
1705 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: true)");
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