]> Git Repo - linux.git/blame - drivers/ata/sata_nv.c
projects / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'drm-intel-next-2012-03-01' of git://people.freedesktop.org/~danvet/drm...
[linux.git] / drivers / ata / sata_nv.c
CommitLineData
1da177e4
LT		 1/*
2 * sata_nv.c - NVIDIA nForce SATA
3 *
4 * Copyright 2004 NVIDIA Corp. All rights reserved.
5 * Copyright 2004 Andrew Chew
6 *
aa7e16d6
JG		 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.
1da177e4 21 *
af36d7f0
JG		 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 *
fbbb262d
RH		 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 *
1da177e4
LT		 37 */
38
1da177e4
LT		 39#include <linux/kernel.h>
40#include <linux/module.h>
5a0e3ad6 41#include <linux/gfp.h>
1da177e4
LT		 42#include <linux/pci.h>
43#include <linux/init.h>
44#include <linux/blkdev.h>
45#include <linux/delay.h>
46#include <linux/interrupt.h>
a9524a76 47#include <linux/device.h>
1da177e4 48#include <scsi/scsi_host.h>
fbbb262d 49#include <scsi/scsi_device.h>
1da177e4
LT		 50#include <linux/libata.h>
51
52#define DRV_NAME "sata_nv"
2a3103ce 53#define DRV_VERSION "3.5"
fbbb262d
RH		 54
55#define NV_ADMA_DMA_BOUNDARY 0xffffffffUL
1da177e4 56
10ad05df 57enum {
0d5ff566
TH		 58 NV_MMIO_BAR = 5,
59
10ad05df 60 NV_PORTS = 2,
14bdef98
EIB		 61 NV_PIO_MASK = ATA_PIO4,
62 NV_MWDMA_MASK = ATA_MWDMA2,
63 NV_UDMA_MASK = ATA_UDMA6,
10ad05df
JG		 64 NV_PORT0_SCR_REG_OFFSET = 0x00,
65 NV_PORT1_SCR_REG_OFFSET = 0x40,
1da177e4 66
27e4b274 67 /* INT_STATUS/ENABLE */
10ad05df 68 NV_INT_STATUS = 0x10,
10ad05df 69 NV_INT_ENABLE = 0x11,
27e4b274 70 NV_INT_STATUS_CK804 = 0x440,
10ad05df 71 NV_INT_ENABLE_CK804 = 0x441,
1da177e4 72
27e4b274
TH		 73 /* INT_STATUS/ENABLE bits */
74 NV_INT_DEV = 0x01,
75 NV_INT_PM = 0x02,
76 NV_INT_ADDED = 0x04,
77 NV_INT_REMOVED = 0x08,
78
79 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
80
39f87582 81 NV_INT_ALL = 0x0f,
5a44efff
TH		 82 NV_INT_MASK = NV_INT_DEV |
83 NV_INT_ADDED | NV_INT_REMOVED,
39f87582 84
27e4b274 85 /* INT_CONFIG */
10ad05df
JG		 86 NV_INT_CONFIG = 0x12,
87 NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI
1da177e4 88
10ad05df
JG		 89 // For PCI config register 20
90 NV_MCP_SATA_CFG_20 = 0x50,
91 NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04,
fbbb262d
RH		 92 NV_MCP_SATA_CFG_20_PORT0_EN = (1 << 17),
93 NV_MCP_SATA_CFG_20_PORT1_EN = (1 << 16),
94 NV_MCP_SATA_CFG_20_PORT0_PWB_EN = (1 << 14),
95 NV_MCP_SATA_CFG_20_PORT1_PWB_EN = (1 << 12),
96
97 NV_ADMA_MAX_CPBS = 32,
98 NV_ADMA_CPB_SZ = 128,
99 NV_ADMA_APRD_SZ = 16,
100 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
101 NV_ADMA_APRD_SZ,
102 NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5,
103 NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ,
104 NV_ADMA_PORT_PRIV_DMA_SZ = NV_ADMA_MAX_CPBS *
105 (NV_ADMA_CPB_SZ + NV_ADMA_SGTBL_SZ),
106
107 /* BAR5 offset to ADMA general registers */
108 NV_ADMA_GEN = 0x400,
109 NV_ADMA_GEN_CTL = 0x00,
110 NV_ADMA_NOTIFIER_CLEAR = 0x30,
111
112 /* BAR5 offset to ADMA ports */
113 NV_ADMA_PORT = 0x480,
114
115 /* size of ADMA port register space */
116 NV_ADMA_PORT_SIZE = 0x100,
117
118 /* ADMA port registers */
119 NV_ADMA_CTL = 0x40,
120 NV_ADMA_CPB_COUNT = 0x42,
121 NV_ADMA_NEXT_CPB_IDX = 0x43,
122 NV_ADMA_STAT = 0x44,
123 NV_ADMA_CPB_BASE_LOW = 0x48,
124 NV_ADMA_CPB_BASE_HIGH = 0x4C,
125 NV_ADMA_APPEND = 0x50,
126 NV_ADMA_NOTIFIER = 0x68,
127 NV_ADMA_NOTIFIER_ERROR = 0x6C,
128
129 /* NV_ADMA_CTL register bits */
130 NV_ADMA_CTL_HOTPLUG_IEN = (1 << 0),
131 NV_ADMA_CTL_CHANNEL_RESET = (1 << 5),
132 NV_ADMA_CTL_GO = (1 << 7),
133 NV_ADMA_CTL_AIEN = (1 << 8),
134 NV_ADMA_CTL_READ_NON_COHERENT = (1 << 11),
135 NV_ADMA_CTL_WRITE_NON_COHERENT = (1 << 12),
136
137 /* CPB response flag bits */
138 NV_CPB_RESP_DONE = (1 << 0),
139 NV_CPB_RESP_ATA_ERR = (1 << 3),
140 NV_CPB_RESP_CMD_ERR = (1 << 4),
141 NV_CPB_RESP_CPB_ERR = (1 << 7),
142
143 /* CPB control flag bits */
144 NV_CPB_CTL_CPB_VALID = (1 << 0),
145 NV_CPB_CTL_QUEUE = (1 << 1),
146 NV_CPB_CTL_APRD_VALID = (1 << 2),
147 NV_CPB_CTL_IEN = (1 << 3),
148 NV_CPB_CTL_FPDMA = (1 << 4),
149
150 /* APRD flags */
151 NV_APRD_WRITE = (1 << 1),
152 NV_APRD_END = (1 << 2),
153 NV_APRD_CONT = (1 << 3),
154
155 /* NV_ADMA_STAT flags */
156 NV_ADMA_STAT_TIMEOUT = (1 << 0),
157 NV_ADMA_STAT_HOTUNPLUG = (1 << 1),
158 NV_ADMA_STAT_HOTPLUG = (1 << 2),
159 NV_ADMA_STAT_CPBERR = (1 << 4),
160 NV_ADMA_STAT_SERROR = (1 << 5),
161 NV_ADMA_STAT_CMD_COMPLETE = (1 << 6),
162 NV_ADMA_STAT_IDLE = (1 << 8),
163 NV_ADMA_STAT_LEGACY = (1 << 9),
164 NV_ADMA_STAT_STOPPED = (1 << 10),
165 NV_ADMA_STAT_DONE = (1 << 12),
166 NV_ADMA_STAT_ERR = NV_ADMA_STAT_CPBERR |
2dcb407e 167 NV_ADMA_STAT_TIMEOUT,
fbbb262d
RH		 168
169 /* port flags */
170 NV_ADMA_PORT_REGISTER_MODE = (1 << 0),
2dec7555 171 NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1),
fbbb262d 172
f140f0f1
KL		 173 /* MCP55 reg offset */
174 NV_CTL_MCP55 = 0x400,
175 NV_INT_STATUS_MCP55 = 0x440,
176 NV_INT_ENABLE_MCP55 = 0x444,
177 NV_NCQ_REG_MCP55 = 0x448,
178
179 /* MCP55 */
180 NV_INT_ALL_MCP55 = 0xffff,
181 NV_INT_PORT_SHIFT_MCP55 = 16, /* each port occupies 16 bits */
182 NV_INT_MASK_MCP55 = NV_INT_ALL_MCP55 & 0xfffd,
183
184 /* SWNCQ ENABLE BITS*/
185 NV_CTL_PRI_SWNCQ = 0x02,
186 NV_CTL_SEC_SWNCQ = 0x04,
187
188 /* SW NCQ status bits*/
189 NV_SWNCQ_IRQ_DEV = (1 << 0),
190 NV_SWNCQ_IRQ_PM = (1 << 1),
191 NV_SWNCQ_IRQ_ADDED = (1 << 2),
192 NV_SWNCQ_IRQ_REMOVED = (1 << 3),
193
194 NV_SWNCQ_IRQ_BACKOUT = (1 << 4),
195 NV_SWNCQ_IRQ_SDBFIS = (1 << 5),
196 NV_SWNCQ_IRQ_DHREGFIS = (1 << 6),
197 NV_SWNCQ_IRQ_DMASETUP = (1 << 7),
198
199 NV_SWNCQ_IRQ_HOTPLUG = NV_SWNCQ_IRQ_ADDED |
200 NV_SWNCQ_IRQ_REMOVED,
201
fbbb262d
RH		 202};
203
204/* ADMA Physical Region Descriptor - one SG segment */
205struct nv_adma_prd {
206 __le64 addr;
207 __le32 len;
208 u8 flags;
209 u8 packet_len;
210 __le16 reserved;
211};
212
213enum nv_adma_regbits {
214 CMDEND = (1 << 15), /* end of command list */
215 WNB = (1 << 14), /* wait-not-BSY */
216 IGN = (1 << 13), /* ignore this entry */
217 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
218 DA2 = (1 << (2 + 8)),
219 DA1 = (1 << (1 + 8)),
220 DA0 = (1 << (0 + 8)),
221};
222
223/* ADMA Command Parameter Block
224 The first 5 SG segments are stored inside the Command Parameter Block itself.
225 If there are more than 5 segments the remainder are stored in a separate
226 memory area indicated by next_aprd. */
227struct nv_adma_cpb {
228 u8 resp_flags; /* 0 */
229 u8 reserved1; /* 1 */
230 u8 ctl_flags; /* 2 */
231 /* len is length of taskfile in 64 bit words */
2dcb407e 232 u8 len; /* 3 */
fbbb262d
RH		 233 u8 tag; /* 4 */
234 u8 next_cpb_idx; /* 5 */
235 __le16 reserved2; /* 6-7 */
236 __le16 tf[12]; /* 8-31 */
237 struct nv_adma_prd aprd[5]; /* 32-111 */
238 __le64 next_aprd; /* 112-119 */
239 __le64 reserved3; /* 120-127 */
10ad05df 240};
1da177e4 241
fbbb262d
RH		 242
243struct nv_adma_port_priv {
244 struct nv_adma_cpb *cpb;
245 dma_addr_t cpb_dma;
246 struct nv_adma_prd *aprd;
247 dma_addr_t aprd_dma;
2dcb407e
JG		 248 void __iomem *ctl_block;
249 void __iomem *gen_block;
250 void __iomem *notifier_clear_block;
8959d300 251 u64 adma_dma_mask;
fbbb262d 252 u8 flags;
5e5c74a5 253 int last_issue_ncq;
fbbb262d
RH		 254};
255
cdf56bcf
RH		 256struct nv_host_priv {
257 unsigned long type;
258};
259
f140f0f1
KL		 260struct defer_queue {
261 u32 defer_bits;
262 unsigned int head;
263 unsigned int tail;
264 unsigned int tag[ATA_MAX_QUEUE];
265};
266
267enum ncq_saw_flag_list {
268 ncq_saw_d2h = (1U << 0),
269 ncq_saw_dmas = (1U << 1),
270 ncq_saw_sdb = (1U << 2),
271 ncq_saw_backout = (1U << 3),
272};
273
274struct nv_swncq_port_priv {
f60d7011 275 struct ata_bmdma_prd *prd; /* our SG list */
f140f0f1
KL		 276 dma_addr_t prd_dma; /* and its DMA mapping */
277 void __iomem *sactive_block;
278 void __iomem *irq_block;
279 void __iomem *tag_block;
280 u32 qc_active;
281
282 unsigned int last_issue_tag;
283
284 /* fifo circular queue to store deferral command */
285 struct defer_queue defer_queue;
286
287 /* for NCQ interrupt analysis */
288 u32 dhfis_bits;
289 u32 dmafis_bits;
290 u32 sdbfis_bits;
291
292 unsigned int ncq_flags;
293};
294
295
5796d1c4 296#define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & (1 << (19 + (12 * (PORT)))))
fbbb262d 297
2dcb407e 298static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
438ac6d5 299#ifdef CONFIG_PM
cdf56bcf 300static int nv_pci_device_resume(struct pci_dev *pdev);
438ac6d5 301#endif
cca3974e 302static void nv_ck804_host_stop(struct ata_host *host);
7d12e780
DH		 303static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
304static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
305static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
82ef04fb
TH		 306static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
307static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
1da177e4 308
7f4774b3
TH		 309static int nv_hardreset(struct ata_link *link, unsigned int *class,
310 unsigned long deadline);
39f87582
TH		 311static void nv_nf2_freeze(struct ata_port *ap);
312static void nv_nf2_thaw(struct ata_port *ap);
313static void nv_ck804_freeze(struct ata_port *ap);
314static void nv_ck804_thaw(struct ata_port *ap);
fbbb262d 315static int nv_adma_slave_config(struct scsi_device *sdev);
2dec7555 316static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
fbbb262d
RH		 317static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
318static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
319static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
320static void nv_adma_irq_clear(struct ata_port *ap);
321static int nv_adma_port_start(struct ata_port *ap);
322static void nv_adma_port_stop(struct ata_port *ap);
438ac6d5 323#ifdef CONFIG_PM
cdf56bcf
RH		 324static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
325static int nv_adma_port_resume(struct ata_port *ap);
438ac6d5 326#endif
53014e25
RH		 327static void nv_adma_freeze(struct ata_port *ap);
328static void nv_adma_thaw(struct ata_port *ap);
fbbb262d
RH		 329static void nv_adma_error_handler(struct ata_port *ap);
330static void nv_adma_host_stop(struct ata_host *host);
f5ecac2d 331static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
f2fb344b 332static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
39f87582 333
f140f0f1
KL		 334static void nv_mcp55_thaw(struct ata_port *ap);
335static void nv_mcp55_freeze(struct ata_port *ap);
336static void nv_swncq_error_handler(struct ata_port *ap);
337static int nv_swncq_slave_config(struct scsi_device *sdev);
338static int nv_swncq_port_start(struct ata_port *ap);
339static void nv_swncq_qc_prep(struct ata_queued_cmd *qc);
340static void nv_swncq_fill_sg(struct ata_queued_cmd *qc);
341static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc);
342static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis);
343static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance);
344#ifdef CONFIG_PM
345static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg);
346static int nv_swncq_port_resume(struct ata_port *ap);
347#endif
348
1da177e4
LT		 349enum nv_host_type
350{
351 GENERIC,
352 NFORCE2,
27e4b274 353 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
fbbb262d 354 CK804,
f140f0f1 355 ADMA,
2d775708 356 MCP5x,
f140f0f1 357 SWNCQ,
1da177e4
LT		 358};
359
3b7d697d 360static const struct pci_device_id nv_pci_tbl[] = {
54bb3a94
JG		 361 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
362 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
363 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
364 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
365 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
366 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
367 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
2d775708
TH		 368 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), MCP5x },
369 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), MCP5x },
370 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), MCP5x },
371 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), MCP5x },
e2e031eb
KL		 372 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
373 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
374 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
2d2744fc
JG		 375
376 { } /* terminate list */
1da177e4
LT		 377};
378
1da177e4
LT		 379static struct pci_driver nv_pci_driver = {
380 .name = DRV_NAME,
381 .id_table = nv_pci_tbl,
382 .probe = nv_init_one,
438ac6d5 383#ifdef CONFIG_PM
cdf56bcf
RH		 384 .suspend = ata_pci_device_suspend,
385 .resume = nv_pci_device_resume,
438ac6d5 386#endif
1daf9ce7 387 .remove = ata_pci_remove_one,
1da177e4
LT		 388};
389
193515d5 390static struct scsi_host_template nv_sht = {
68d1d07b 391 ATA_BMDMA_SHT(DRV_NAME),
1da177e4
LT		 392};
393
fbbb262d 394static struct scsi_host_template nv_adma_sht = {
68d1d07b 395 ATA_NCQ_SHT(DRV_NAME),
fbbb262d 396 .can_queue = NV_ADMA_MAX_CPBS,
fbbb262d 397 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
fbbb262d
RH		 398 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
399 .slave_configure = nv_adma_slave_config,
fbbb262d
RH		 400};
401
f140f0f1 402static struct scsi_host_template nv_swncq_sht = {
68d1d07b 403 ATA_NCQ_SHT(DRV_NAME),
f140f0f1 404 .can_queue = ATA_MAX_QUEUE,
f140f0f1 405 .sg_tablesize = LIBATA_MAX_PRD,
f140f0f1
KL		 406 .dma_boundary = ATA_DMA_BOUNDARY,
407 .slave_configure = nv_swncq_slave_config,
f140f0f1
KL		 408};
409
7f4774b3
TH		 410/*
411 * NV SATA controllers have various different problems with hardreset
412 * protocol depending on the specific controller and device.
413 *
414 * GENERIC:
415 *
416 * bko11195 reports that link doesn't come online after hardreset on
417 * generic nv's and there have been several other similar reports on
418 * linux-ide.
419 *
420 * bko12351#c23 reports that warmplug on MCP61 doesn't work with
421 * softreset.
422 *
423 * NF2/3:
424 *
425 * bko3352 reports nf2/3 controllers can't determine device signature
426 * reliably after hardreset. The following thread reports detection
427 * failure on cold boot with the standard debouncing timing.
428 *
429 * http://thread.gmane.org/gmane.linux.ide/34098
430 *
431 * bko12176 reports that hardreset fails to bring up the link during
432 * boot on nf2.
433 *
434 * CK804:
435 *
436 * For initial probing after boot and hot plugging, hardreset mostly
437 * works fine on CK804 but curiously, reprobing on the initial port
438 * by rescanning or rmmod/insmod fails to acquire the initial D2H Reg
439 * FIS in somewhat undeterministic way.
440 *
441 * SWNCQ:
442 *
443 * bko12351 reports that when SWNCQ is enabled, for hotplug to work,
444 * hardreset should be used and hardreset can't report proper
445 * signature, which suggests that mcp5x is closer to nf2 as long as
446 * reset quirkiness is concerned.
447 *
448 * bko12703 reports that boot probing fails for intel SSD with
449 * hardreset. Link fails to come online. Softreset works fine.
450 *
451 * The failures are varied but the following patterns seem true for
452 * all flavors.
453 *
454 * - Softreset during boot always works.
455 *
456 * - Hardreset during boot sometimes fails to bring up the link on
457 * certain comibnations and device signature acquisition is
458 * unreliable.
459 *
460 * - Hardreset is often necessary after hotplug.
461 *
462 * So, preferring softreset for boot probing and error handling (as
463 * hardreset might bring down the link) but using hardreset for
464 * post-boot probing should work around the above issues in most
465 * cases. Define nv_hardreset() which only kicks in for post-boot
466 * probing and use it for all variants.
467 */
468static struct ata_port_operations nv_generic_ops = {
029cfd6b 469 .inherits = &ata_bmdma_port_ops,
c96f1732 470 .lost_interrupt = ATA_OP_NULL,
1da177e4
LT		 471 .scr_read = nv_scr_read,
472 .scr_write = nv_scr_write,
7f4774b3 473 .hardreset = nv_hardreset,
1da177e4
LT		 474};
475
029cfd6b 476static struct ata_port_operations nv_nf2_ops = {
7dac745b 477 .inherits = &nv_generic_ops,
39f87582
TH		 478 .freeze = nv_nf2_freeze,
479 .thaw = nv_nf2_thaw,
ada364e8
TH		 480};
481
029cfd6b 482static struct ata_port_operations nv_ck804_ops = {
7f4774b3 483 .inherits = &nv_generic_ops,
39f87582
TH		 484 .freeze = nv_ck804_freeze,
485 .thaw = nv_ck804_thaw,
ada364e8
TH		 486 .host_stop = nv_ck804_host_stop,
487};
488
029cfd6b 489static struct ata_port_operations nv_adma_ops = {
3c324283 490 .inherits = &nv_ck804_ops,
029cfd6b 491
2dec7555 492 .check_atapi_dma = nv_adma_check_atapi_dma,
5682ed33 493 .sff_tf_read = nv_adma_tf_read,
31cc23b3 494 .qc_defer = ata_std_qc_defer,
fbbb262d
RH		 495 .qc_prep = nv_adma_qc_prep,
496 .qc_issue = nv_adma_qc_issue,
5682ed33 497 .sff_irq_clear = nv_adma_irq_clear,
029cfd6b 498
53014e25
RH		 499 .freeze = nv_adma_freeze,
500 .thaw = nv_adma_thaw,
fbbb262d 501 .error_handler = nv_adma_error_handler,
f5ecac2d 502 .post_internal_cmd = nv_adma_post_internal_cmd,
029cfd6b 503
fbbb262d
RH		 504 .port_start = nv_adma_port_start,
505 .port_stop = nv_adma_port_stop,
438ac6d5 506#ifdef CONFIG_PM
cdf56bcf
RH		 507 .port_suspend = nv_adma_port_suspend,
508 .port_resume = nv_adma_port_resume,
438ac6d5 509#endif
fbbb262d
RH		 510 .host_stop = nv_adma_host_stop,
511};
512
029cfd6b 513static struct ata_port_operations nv_swncq_ops = {
7f4774b3 514 .inherits = &nv_generic_ops,
029cfd6b 515
f140f0f1
KL		 516 .qc_defer = ata_std_qc_defer,
517 .qc_prep = nv_swncq_qc_prep,
518 .qc_issue = nv_swncq_qc_issue,
029cfd6b 519
f140f0f1
KL		 520 .freeze = nv_mcp55_freeze,
521 .thaw = nv_mcp55_thaw,
522 .error_handler = nv_swncq_error_handler,
029cfd6b 523
f140f0f1
KL		 524#ifdef CONFIG_PM
525 .port_suspend = nv_swncq_port_suspend,
526 .port_resume = nv_swncq_port_resume,
527#endif
528 .port_start = nv_swncq_port_start,
529};
530
95947193
TH		 531struct nv_pi_priv {
532 irq_handler_t irq_handler;
533 struct scsi_host_template *sht;
534};
535
536#define NV_PI_PRIV(_irq_handler, _sht) \
537 &(struct nv_pi_priv){ .irq_handler = _irq_handler, .sht = _sht }
538
1626aeb8 539static const struct ata_port_info nv_port_info[] = {
ada364e8
TH		 540 /* generic */
541 {
9cbe056f 542 .flags = ATA_FLAG_SATA,
ada364e8
TH		 543 .pio_mask = NV_PIO_MASK,
544 .mwdma_mask = NV_MWDMA_MASK,
545 .udma_mask = NV_UDMA_MASK,
546 .port_ops = &nv_generic_ops,
95947193 547 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
ada364e8
TH		 548 },
549 /* nforce2/3 */
550 {
9cbe056f 551 .flags = ATA_FLAG_SATA,
ada364e8
TH		 552 .pio_mask = NV_PIO_MASK,
553 .mwdma_mask = NV_MWDMA_MASK,
554 .udma_mask = NV_UDMA_MASK,
555 .port_ops = &nv_nf2_ops,
95947193 556 .private_data = NV_PI_PRIV(nv_nf2_interrupt, &nv_sht),
ada364e8
TH		 557 },
558 /* ck804 */
559 {
9cbe056f 560 .flags = ATA_FLAG_SATA,
ada364e8
TH		 561 .pio_mask = NV_PIO_MASK,
562 .mwdma_mask = NV_MWDMA_MASK,
563 .udma_mask = NV_UDMA_MASK,
564 .port_ops = &nv_ck804_ops,
95947193 565 .private_data = NV_PI_PRIV(nv_ck804_interrupt, &nv_sht),
ada364e8 566 },
fbbb262d
RH		 567 /* ADMA */
568 {
9cbe056f 569 .flags = ATA_FLAG_SATA | ATA_FLAG_NCQ,
fbbb262d
RH		 570 .pio_mask = NV_PIO_MASK,
571 .mwdma_mask = NV_MWDMA_MASK,
572 .udma_mask = NV_UDMA_MASK,
573 .port_ops = &nv_adma_ops,
95947193 574 .private_data = NV_PI_PRIV(nv_adma_interrupt, &nv_adma_sht),
fbbb262d 575 },
2d775708
TH		 576 /* MCP5x */
577 {
9cbe056f 578 .flags = ATA_FLAG_SATA,
2d775708
TH		 579 .pio_mask = NV_PIO_MASK,
580 .mwdma_mask = NV_MWDMA_MASK,
581 .udma_mask = NV_UDMA_MASK,
7f4774b3 582 .port_ops = &nv_generic_ops,
2d775708
TH		 583 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
584 },
f140f0f1
KL		 585 /* SWNCQ */
586 {
9cbe056f 587 .flags = ATA_FLAG_SATA | ATA_FLAG_NCQ,
f140f0f1
KL		 588 .pio_mask = NV_PIO_MASK,
589 .mwdma_mask = NV_MWDMA_MASK,
590 .udma_mask = NV_UDMA_MASK,
591 .port_ops = &nv_swncq_ops,
95947193 592 .private_data = NV_PI_PRIV(nv_swncq_interrupt, &nv_swncq_sht),
f140f0f1 593 },
1da177e4
LT		 594};
595
596MODULE_AUTHOR("NVIDIA");
597MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
598MODULE_LICENSE("GPL");
599MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
600MODULE_VERSION(DRV_VERSION);
601
90ab5ee9
RR		 602static bool adma_enabled;
603static bool swncq_enabled = 1;
604static bool msi_enabled;
fbbb262d 605
2dec7555
RH		 606static void nv_adma_register_mode(struct ata_port *ap)
607{
2dec7555 608 struct nv_adma_port_priv *pp = ap->private_data;
cdf56bcf 609 void __iomem *mmio = pp->ctl_block;
a2cfe81a
RH		 610 u16 tmp, status;
611 int count = 0;
2dec7555
RH		 612
613 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
614 return;
615
a2cfe81a 616 status = readw(mmio + NV_ADMA_STAT);
2dcb407e 617 while (!(status & NV_ADMA_STAT_IDLE) && count < 20) {
a2cfe81a
RH		 618 ndelay(50);
619 status = readw(mmio + NV_ADMA_STAT);
620 count++;
621 }
2dcb407e 622 if (count == 20)
a9a79dfe
JP		 623 ata_port_warn(ap, "timeout waiting for ADMA IDLE, stat=0x%hx\n",
624 status);
a2cfe81a 625
2dec7555
RH		 626 tmp = readw(mmio + NV_ADMA_CTL);
627 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
628
a2cfe81a
RH		 629 count = 0;
630 status = readw(mmio + NV_ADMA_STAT);
2dcb407e 631 while (!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
a2cfe81a
RH		 632 ndelay(50);
633 status = readw(mmio + NV_ADMA_STAT);
634 count++;
635 }
2dcb407e 636 if (count == 20)
a9a79dfe
JP		 637 ata_port_warn(ap,
638 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
639 status);
a2cfe81a 640
2dec7555
RH		 641 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
642}
643
644static void nv_adma_mode(struct ata_port *ap)
645{
2dec7555 646 struct nv_adma_port_priv *pp = ap->private_data;
cdf56bcf 647 void __iomem *mmio = pp->ctl_block;
a2cfe81a
RH		 648 u16 tmp, status;
649 int count = 0;
2dec7555
RH		 650
651 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
652 return;
f20b16ff 653
2dec7555
RH		 654 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
655
656 tmp = readw(mmio + NV_ADMA_CTL);
657 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
658
a2cfe81a 659 status = readw(mmio + NV_ADMA_STAT);
2dcb407e 660 while (((status & NV_ADMA_STAT_LEGACY) ||
a2cfe81a
RH		 661 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
662 ndelay(50);
663 status = readw(mmio + NV_ADMA_STAT);
664 count++;
665 }
2dcb407e 666 if (count == 20)
a9a79dfe 667 ata_port_warn(ap,
a2cfe81a
RH		 668 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
669 status);
670
2dec7555
RH		 671 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
672}
673
fbbb262d
RH		 674static int nv_adma_slave_config(struct scsi_device *sdev)
675{
676 struct ata_port *ap = ata_shost_to_port(sdev->host);
2dec7555 677 struct nv_adma_port_priv *pp = ap->private_data;
8959d300
RH		 678 struct nv_adma_port_priv *port0, *port1;
679 struct scsi_device *sdev0, *sdev1;
2dec7555 680 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
8959d300 681 unsigned long segment_boundary, flags;
fbbb262d
RH		 682 unsigned short sg_tablesize;
683 int rc;
2dec7555
RH		 684 int adma_enable;
685 u32 current_reg, new_reg, config_mask;
fbbb262d
RH		 686
687 rc = ata_scsi_slave_config(sdev);
688
689 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
690 /* Not a proper libata device, ignore */
691 return rc;
692
8959d300
RH		 693 spin_lock_irqsave(ap->lock, flags);
694
9af5c9c9 695 if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) {
fbbb262d
RH		 696 /*
697 * NVIDIA reports that ADMA mode does not support ATAPI commands.
698 * Therefore ATAPI commands are sent through the legacy interface.
699 * However, the legacy interface only supports 32-bit DMA.
700 * Restrict DMA parameters as required by the legacy interface
701 * when an ATAPI device is connected.
702 */
fbbb262d
RH		 703 segment_boundary = ATA_DMA_BOUNDARY;
704 /* Subtract 1 since an extra entry may be needed for padding, see
705 libata-scsi.c */
706 sg_tablesize = LIBATA_MAX_PRD - 1;
f20b16ff 707
2dec7555
RH		 708 /* Since the legacy DMA engine is in use, we need to disable ADMA
709 on the port. */
710 adma_enable = 0;
711 nv_adma_register_mode(ap);
2dcb407e 712 } else {
fbbb262d
RH		 713 segment_boundary = NV_ADMA_DMA_BOUNDARY;
714 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
2dec7555 715 adma_enable = 1;
fbbb262d 716 }
f20b16ff 717
2dec7555
RH		 718 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &current_reg);
719
2dcb407e 720 if (ap->port_no == 1)
2dec7555
RH		 721 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
722 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
723 else
724 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
725 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
f20b16ff 726
2dcb407e 727 if (adma_enable) {
2dec7555
RH		 728 new_reg = current_reg | config_mask;
729 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
2dcb407e 730 } else {
2dec7555
RH		 731 new_reg = current_reg & ~config_mask;
732 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
733 }
f20b16ff 734
2dcb407e 735 if (current_reg != new_reg)
2dec7555 736 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
f20b16ff 737
8959d300
RH		 738 port0 = ap->host->ports[0]->private_data;
739 port1 = ap->host->ports[1]->private_data;
740 sdev0 = ap->host->ports[0]->link.device[0].sdev;
741 sdev1 = ap->host->ports[1]->link.device[0].sdev;
742 if ((port0->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
743 (port1->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)) {
744 /** We have to set the DMA mask to 32-bit if either port is in
745 ATAPI mode, since they are on the same PCI device which is
746 used for DMA mapping. If we set the mask we also need to set
747 the bounce limit on both ports to ensure that the block
748 layer doesn't feed addresses that cause DMA mapping to
749 choke. If either SCSI device is not allocated yet, it's OK
750 since that port will discover its correct setting when it
751 does get allocated.
752 Note: Setting 32-bit mask should not fail. */
753 if (sdev0)
754 blk_queue_bounce_limit(sdev0->request_queue,
755 ATA_DMA_MASK);
756 if (sdev1)
757 blk_queue_bounce_limit(sdev1->request_queue,
758 ATA_DMA_MASK);
759
760 pci_set_dma_mask(pdev, ATA_DMA_MASK);
761 } else {
762 /** This shouldn't fail as it was set to this value before */
763 pci_set_dma_mask(pdev, pp->adma_dma_mask);
764 if (sdev0)
765 blk_queue_bounce_limit(sdev0->request_queue,
766 pp->adma_dma_mask);
767 if (sdev1)
768 blk_queue_bounce_limit(sdev1->request_queue,
769 pp->adma_dma_mask);
770 }
771
fbbb262d 772 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
8a78362c 773 blk_queue_max_segments(sdev->request_queue, sg_tablesize);
a9a79dfe
JP		 774 ata_port_info(ap,
775 "DMA mask 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
776 (unsigned long long)*ap->host->dev->dma_mask,
777 segment_boundary, sg_tablesize);
8959d300
RH		 778
779 spin_unlock_irqrestore(ap->lock, flags);
780
fbbb262d
RH		 781 return rc;
782}
783
2dec7555
RH		 784static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
785{
786 struct nv_adma_port_priv *pp = qc->ap->private_data;
787 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
788}
789
f2fb344b
RH		 790static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
791{
3f3debdb
RH		 792 /* Other than when internal or pass-through commands are executed,
793 the only time this function will be called in ADMA mode will be
794 if a command fails. In the failure case we don't care about going
795 into register mode with ADMA commands pending, as the commands will
796 all shortly be aborted anyway. We assume that NCQ commands are not
797 issued via passthrough, which is the only way that switching into
798 ADMA mode could abort outstanding commands. */
f2fb344b
RH		 799 nv_adma_register_mode(ap);
800
9363c382 801 ata_sff_tf_read(ap, tf);
f2fb344b
RH		 802}
803
2dec7555 804static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
fbbb262d
RH		 805{
806 unsigned int idx = 0;
807
2dcb407e 808 if (tf->flags & ATA_TFLAG_ISADDR) {
ac3d6b86
RH		 809 if (tf->flags & ATA_TFLAG_LBA48) {
810 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
811 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
812 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
813 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
814 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
815 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
816 } else
817 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
a84471fe 818
ac3d6b86
RH		 819 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
820 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
821 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
822 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
fbbb262d 823 }
a84471fe 824
2dcb407e 825 if (tf->flags & ATA_TFLAG_DEVICE)
ac3d6b86 826 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
fbbb262d
RH		 827
828 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
a84471fe 829
2dcb407e 830 while (idx < 12)
ac3d6b86 831 cpb[idx++] = cpu_to_le16(IGN);
fbbb262d
RH		 832
833 return idx;
834}
835
5bd28a4b 836static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
fbbb262d
RH		 837{
838 struct nv_adma_port_priv *pp = ap->private_data;
2dec7555 839 u8 flags = pp->cpb[cpb_num].resp_flags;
fbbb262d
RH		 840
841 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
842
5bd28a4b
RH		 843 if (unlikely((force_err ||
844 flags & (NV_CPB_RESP_ATA_ERR |
845 NV_CPB_RESP_CMD_ERR |
846 NV_CPB_RESP_CPB_ERR)))) {
9af5c9c9 847 struct ata_eh_info *ehi = &ap->link.eh_info;
5bd28a4b
RH		 848 int freeze = 0;
849
850 ata_ehi_clear_desc(ehi);
2dcb407e 851 __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags);
5bd28a4b 852 if (flags & NV_CPB_RESP_ATA_ERR) {
b64bbc39 853 ata_ehi_push_desc(ehi, "ATA error");
5bd28a4b
RH		 854 ehi->err_mask |= AC_ERR_DEV;
855 } else if (flags & NV_CPB_RESP_CMD_ERR) {
b64bbc39 856 ata_ehi_push_desc(ehi, "CMD error");
5bd28a4b
RH		 857 ehi->err_mask |= AC_ERR_DEV;
858 } else if (flags & NV_CPB_RESP_CPB_ERR) {
b64bbc39 859 ata_ehi_push_desc(ehi, "CPB error");
5bd28a4b
RH		 860 ehi->err_mask |= AC_ERR_SYSTEM;
861 freeze = 1;
862 } else {
863 /* notifier error, but no error in CPB flags? */
b64bbc39 864 ata_ehi_push_desc(ehi, "unknown");
5bd28a4b
RH		 865 ehi->err_mask |= AC_ERR_OTHER;
866 freeze = 1;
867 }
868 /* Kill all commands. EH will determine what actually failed. */
869 if (freeze)
870 ata_port_freeze(ap);
871 else
872 ata_port_abort(ap);
1aadf5c3 873 return -1;
fbbb262d 874 }
5bd28a4b 875
1aadf5c3
TH		 876 if (likely(flags & NV_CPB_RESP_DONE))
877 return 1;
5bd28a4b 878 return 0;
fbbb262d
RH		 879}
880
2dec7555
RH		 881static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
882{
9af5c9c9 883 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
2dec7555
RH		 884
885 /* freeze if hotplugged */
886 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
887 ata_port_freeze(ap);
888 return 1;
889 }
890
891 /* bail out if not our interrupt */
892 if (!(irq_stat & NV_INT_DEV))
893 return 0;
894
895 /* DEV interrupt w/ no active qc? */
896 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
9363c382 897 ata_sff_check_status(ap);
2dec7555
RH		 898 return 1;
899 }
900
901 /* handle interrupt */
c3b28894 902 return ata_bmdma_port_intr(ap, qc);
2dec7555
RH		 903}
904
fbbb262d
RH		 905static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
906{
907 struct ata_host *host = dev_instance;
908 int i, handled = 0;
2dec7555 909 u32 notifier_clears[2];
fbbb262d
RH		 910
911 spin_lock(&host->lock);
912
913 for (i = 0; i < host->n_ports; i++) {
914 struct ata_port *ap = host->ports[i];
3e4ec344
TH		 915 struct nv_adma_port_priv *pp = ap->private_data;
916 void __iomem *mmio = pp->ctl_block;
917 u16 status;
918 u32 gen_ctl;
919 u32 notifier, notifier_error;
920
2dec7555 921 notifier_clears[i] = 0;
fbbb262d 922
3e4ec344
TH		 923 /* if ADMA is disabled, use standard ata interrupt handler */
924 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
925 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
926 >> (NV_INT_PORT_SHIFT * i);
927 handled += nv_host_intr(ap, irq_stat);
928 continue;
929 }
fbbb262d 930
3e4ec344
TH		 931 /* if in ATA register mode, check for standard interrupts */
932 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
933 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
934 >> (NV_INT_PORT_SHIFT * i);
935 if (ata_tag_valid(ap->link.active_tag))
936 /** NV_INT_DEV indication seems unreliable
937 at times at least in ADMA mode. Force it
938 on always when a command is active, to
939 prevent losing interrupts. */
940 irq_stat |= NV_INT_DEV;
941 handled += nv_host_intr(ap, irq_stat);
942 }
943
944 notifier = readl(mmio + NV_ADMA_NOTIFIER);
945 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
946 notifier_clears[i] = notifier | notifier_error;
947
948 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
949
950 if (!NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
951 !notifier_error)
952 /* Nothing to do */
953 continue;
954
955 status = readw(mmio + NV_ADMA_STAT);
956
957 /*
958 * Clear status. Ensure the controller sees the
959 * clearing before we start looking at any of the CPB
960 * statuses, so that any CPB completions after this
961 * point in the handler will raise another interrupt.
962 */
963 writew(status, mmio + NV_ADMA_STAT);
964 readw(mmio + NV_ADMA_STAT); /* flush posted write */
965 rmb();
fbbb262d 966
3e4ec344
TH		 967 handled++; /* irq handled if we got here */
968
969 /* freeze if hotplugged or controller error */
970 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
971 NV_ADMA_STAT_HOTUNPLUG |
972 NV_ADMA_STAT_TIMEOUT |
973 NV_ADMA_STAT_SERROR))) {
974 struct ata_eh_info *ehi = &ap->link.eh_info;
975
976 ata_ehi_clear_desc(ehi);
977 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status);
978 if (status & NV_ADMA_STAT_TIMEOUT) {
979 ehi->err_mask |= AC_ERR_SYSTEM;
980 ata_ehi_push_desc(ehi, "timeout");
981 } else if (status & NV_ADMA_STAT_HOTPLUG) {
982 ata_ehi_hotplugged(ehi);
983 ata_ehi_push_desc(ehi, "hotplug");
984 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
985 ata_ehi_hotplugged(ehi);
986 ata_ehi_push_desc(ehi, "hot unplug");
987 } else if (status & NV_ADMA_STAT_SERROR) {
988 /* let EH analyze SError and figure out cause */
989 ata_ehi_push_desc(ehi, "SError");
990 } else
991 ata_ehi_push_desc(ehi, "unknown");
992 ata_port_freeze(ap);
993 continue;
994 }
995
996 if (status & (NV_ADMA_STAT_DONE |
997 NV_ADMA_STAT_CPBERR |
998 NV_ADMA_STAT_CMD_COMPLETE)) {
999 u32 check_commands = notifier_clears[i];
1aadf5c3 1000 u32 done_mask = 0;
752e386c 1001 int pos, rc;
3e4ec344
TH		 1002
1003 if (status & NV_ADMA_STAT_CPBERR) {
1004 /* check all active commands */
1005 if (ata_tag_valid(ap->link.active_tag))
1006 check_commands = 1 <<
1007 ap->link.active_tag;
1008 else
1009 check_commands = ap->link.sactive;
fbbb262d
RH		 1010 }
1011
3e4ec344 1012 /* check CPBs for completed commands */
752e386c 1013 while ((pos = ffs(check_commands))) {
3e4ec344 1014 pos--;
752e386c 1015 rc = nv_adma_check_cpb(ap, pos,
5796d1c4 1016 notifier_error & (1 << pos));
1aadf5c3
TH		 1017 if (rc > 0)
1018 done_mask |= 1 << pos;
1019 else if (unlikely(rc < 0))
752e386c 1020 check_commands = 0;
3e4ec344 1021 check_commands &= ~(1 << pos);
fbbb262d 1022 }
1aadf5c3 1023 ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask);
fbbb262d
RH		 1024 }
1025 }
f20b16ff 1026
b447916e 1027 if (notifier_clears[0] || notifier_clears[1]) {
2dec7555
RH		 1028 /* Note: Both notifier clear registers must be written
1029 if either is set, even if one is zero, according to NVIDIA. */
cdf56bcf
RH		 1030 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
1031 writel(notifier_clears[0], pp->notifier_clear_block);
1032 pp = host->ports[1]->private_data;
1033 writel(notifier_clears[1], pp->notifier_clear_block);
2dec7555 1034 }
fbbb262d
RH		 1035
1036 spin_unlock(&host->lock);
1037
1038 return IRQ_RETVAL(handled);
1039}
1040
53014e25
RH		 1041static void nv_adma_freeze(struct ata_port *ap)
1042{
1043 struct nv_adma_port_priv *pp = ap->private_data;
1044 void __iomem *mmio = pp->ctl_block;
1045 u16 tmp;
1046
1047 nv_ck804_freeze(ap);
1048
1049 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1050 return;
1051
1052 /* clear any outstanding CK804 notifications */
2dcb407e 1053 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
53014e25
RH		 1054 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1055
1056 /* Disable interrupt */
1057 tmp = readw(mmio + NV_ADMA_CTL);
2dcb407e 1058 writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
53014e25 1059 mmio + NV_ADMA_CTL);
5796d1c4 1060 readw(mmio + NV_ADMA_CTL); /* flush posted write */
53014e25
RH		 1061}
1062
1063static void nv_adma_thaw(struct ata_port *ap)
1064{
1065 struct nv_adma_port_priv *pp = ap->private_data;
1066 void __iomem *mmio = pp->ctl_block;
1067 u16 tmp;
1068
1069 nv_ck804_thaw(ap);
1070
1071 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1072 return;
1073
1074 /* Enable interrupt */
1075 tmp = readw(mmio + NV_ADMA_CTL);
2dcb407e 1076 writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
53014e25 1077 mmio + NV_ADMA_CTL);
5796d1c4 1078 readw(mmio + NV_ADMA_CTL); /* flush posted write */
53014e25
RH		 1079}
1080
fbbb262d
RH		 1081static void nv_adma_irq_clear(struct ata_port *ap)
1082{
cdf56bcf
RH		 1083 struct nv_adma_port_priv *pp = ap->private_data;
1084 void __iomem *mmio = pp->ctl_block;
53014e25 1085 u32 notifier_clears[2];
fbbb262d 1086
53014e25 1087 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
37f65b8b 1088 ata_bmdma_irq_clear(ap);
53014e25
RH		 1089 return;
1090 }
1091
1092 /* clear any outstanding CK804 notifications */
2dcb407e 1093 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
53014e25 1094 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
fbbb262d 1095
53014e25
RH		 1096 /* clear ADMA status */
1097 writew(0xffff, mmio + NV_ADMA_STAT);
a617c09f 1098
53014e25
RH		 1099 /* clear notifiers - note both ports need to be written with
1100 something even though we are only clearing on one */
1101 if (ap->port_no == 0) {
1102 notifier_clears[0] = 0xFFFFFFFF;
1103 notifier_clears[1] = 0;
1104 } else {
1105 notifier_clears[0] = 0;
1106 notifier_clears[1] = 0xFFFFFFFF;
1107 }
1108 pp = ap->host->ports[0]->private_data;
1109 writel(notifier_clears[0], pp->notifier_clear_block);
1110 pp = ap->host->ports[1]->private_data;
1111 writel(notifier_clears[1], pp->notifier_clear_block);
fbbb262d
RH		 1112}
1113
f5ecac2d 1114static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
fbbb262d 1115{
f5ecac2d 1116 struct nv_adma_port_priv *pp = qc->ap->private_data;
fbbb262d 1117
b447916e 1118 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
fe06e5f9 1119 ata_bmdma_post_internal_cmd(qc);
fbbb262d
RH		 1120}
1121
1122static int nv_adma_port_start(struct ata_port *ap)
1123{
1124 struct device *dev = ap->host->dev;
1125 struct nv_adma_port_priv *pp;
1126 int rc;
1127 void *mem;
1128 dma_addr_t mem_dma;
cdf56bcf 1129 void __iomem *mmio;
8959d300 1130 struct pci_dev *pdev = to_pci_dev(dev);
fbbb262d
RH		 1131 u16 tmp;
1132
1133 VPRINTK("ENTER\n");
1134
8959d300
RH		 1135 /* Ensure DMA mask is set to 32-bit before allocating legacy PRD and
1136 pad buffers */
1137 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1138 if (rc)
1139 return rc;
1140 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1141 if (rc)
1142 return rc;
1143
c7087652
TH		 1144 /* we might fallback to bmdma, allocate bmdma resources */
1145 rc = ata_bmdma_port_start(ap);
fbbb262d
RH		 1146 if (rc)
1147 return rc;
1148
24dc5f33
TH		 1149 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1150 if (!pp)
1151 return -ENOMEM;
fbbb262d 1152
0d5ff566 1153 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
cdf56bcf
RH		 1154 ap->port_no * NV_ADMA_PORT_SIZE;
1155 pp->ctl_block = mmio;
0d5ff566 1156 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
cdf56bcf
RH		 1157 pp->notifier_clear_block = pp->gen_block +
1158 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1159
8959d300
RH		 1160 /* Now that the legacy PRD and padding buffer are allocated we can
1161 safely raise the DMA mask to allocate the CPB/APRD table.
1162 These are allowed to fail since we store the value that ends up
1163 being used to set as the bounce limit in slave_config later if
1164 needed. */
1165 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1166 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1167 pp->adma_dma_mask = *dev->dma_mask;
1168
24dc5f33
TH		 1169 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1170 &mem_dma, GFP_KERNEL);
1171 if (!mem)
1172 return -ENOMEM;
fbbb262d
RH		 1173 memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ);
1174
1175 /*
1176 * First item in chunk of DMA memory:
1177 * 128-byte command parameter block (CPB)
1178 * one for each command tag
1179 */
1180 pp->cpb = mem;
1181 pp->cpb_dma = mem_dma;
1182
1183 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
5796d1c4 1184 writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
fbbb262d
RH		 1185
1186 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1187 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1188
1189 /*
1190 * Second item: block of ADMA_SGTBL_LEN s/g entries
1191 */
1192 pp->aprd = mem;
1193 pp->aprd_dma = mem_dma;
1194
1195 ap->private_data = pp;
1196
1197 /* clear any outstanding interrupt conditions */
1198 writew(0xffff, mmio + NV_ADMA_STAT);
1199
1200 /* initialize port variables */
1201 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1202
1203 /* clear CPB fetch count */
1204 writew(0, mmio + NV_ADMA_CPB_COUNT);
1205
cdf56bcf 1206 /* clear GO for register mode, enable interrupt */
fbbb262d 1207 tmp = readw(mmio + NV_ADMA_CTL);
5796d1c4
JG		 1208 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1209 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
fbbb262d
RH		 1210
1211 tmp = readw(mmio + NV_ADMA_CTL);
1212 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
5796d1c4 1213 readw(mmio + NV_ADMA_CTL); /* flush posted write */
fbbb262d
RH		 1214 udelay(1);
1215 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
5796d1c4 1216 readw(mmio + NV_ADMA_CTL); /* flush posted write */
fbbb262d
RH		 1217
1218 return 0;
fbbb262d
RH		 1219}
1220
1221static void nv_adma_port_stop(struct ata_port *ap)
1222{
fbbb262d 1223 struct nv_adma_port_priv *pp = ap->private_data;
cdf56bcf 1224 void __iomem *mmio = pp->ctl_block;
fbbb262d
RH		 1225
1226 VPRINTK("ENTER\n");
fbbb262d 1227 writew(0, mmio + NV_ADMA_CTL);
fbbb262d
RH		 1228}
1229
438ac6d5 1230#ifdef CONFIG_PM
cdf56bcf
RH		 1231static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1232{
1233 struct nv_adma_port_priv *pp = ap->private_data;
1234 void __iomem *mmio = pp->ctl_block;
1235
1236 /* Go to register mode - clears GO */
1237 nv_adma_register_mode(ap);
1238
1239 /* clear CPB fetch count */
1240 writew(0, mmio + NV_ADMA_CPB_COUNT);
1241
1242 /* disable interrupt, shut down port */
1243 writew(0, mmio + NV_ADMA_CTL);
1244
1245 return 0;
1246}
1247
1248static int nv_adma_port_resume(struct ata_port *ap)
1249{
1250 struct nv_adma_port_priv *pp = ap->private_data;
1251 void __iomem *mmio = pp->ctl_block;
1252 u16 tmp;
1253
1254 /* set CPB block location */
1255 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
5796d1c4 1256 writel((pp->cpb_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
cdf56bcf
RH		 1257
1258 /* clear any outstanding interrupt conditions */
1259 writew(0xffff, mmio + NV_ADMA_STAT);
1260
1261 /* initialize port variables */
1262 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1263
1264 /* clear CPB fetch count */
1265 writew(0, mmio + NV_ADMA_CPB_COUNT);
1266
1267 /* clear GO for register mode, enable interrupt */
1268 tmp = readw(mmio + NV_ADMA_CTL);
5796d1c4
JG		 1269 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1270 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
cdf56bcf
RH		 1271
1272 tmp = readw(mmio + NV_ADMA_CTL);
1273 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
5796d1c4 1274 readw(mmio + NV_ADMA_CTL); /* flush posted write */
cdf56bcf
RH		 1275 udelay(1);
1276 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
5796d1c4 1277 readw(mmio + NV_ADMA_CTL); /* flush posted write */
cdf56bcf
RH		 1278
1279 return 0;
1280}
438ac6d5 1281#endif
fbbb262d 1282
9a829ccf 1283static void nv_adma_setup_port(struct ata_port *ap)
fbbb262d 1284{
9a829ccf
TH		 1285 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1286 struct ata_ioports *ioport = &ap->ioaddr;
fbbb262d
RH		 1287
1288 VPRINTK("ENTER\n");
1289
9a829ccf 1290 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
fbbb262d 1291
0d5ff566
TH		 1292 ioport->cmd_addr = mmio;
1293 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
fbbb262d 1294 ioport->error_addr =
0d5ff566
TH		 1295 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1296 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1297 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1298 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1299 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1300 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
fbbb262d 1301 ioport->status_addr =
0d5ff566 1302 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
fbbb262d 1303 ioport->altstatus_addr =
0d5ff566 1304 ioport->ctl_addr = mmio + 0x20;
fbbb262d
RH		 1305}
1306
9a829ccf 1307static int nv_adma_host_init(struct ata_host *host)
fbbb262d 1308{
9a829ccf 1309 struct pci_dev *pdev = to_pci_dev(host->dev);
fbbb262d
RH		 1310 unsigned int i;
1311 u32 tmp32;
1312
1313 VPRINTK("ENTER\n");
1314
1315 /* enable ADMA on the ports */
1316 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1317 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1318 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1319 NV_MCP_SATA_CFG_20_PORT1_EN |
1320 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1321
1322 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1323
9a829ccf
TH		 1324 for (i = 0; i < host->n_ports; i++)
1325 nv_adma_setup_port(host->ports[i]);
fbbb262d 1326
fbbb262d
RH		 1327 return 0;
1328}
1329
1330static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1331 struct scatterlist *sg,
1332 int idx,
1333 struct nv_adma_prd *aprd)
1334{
41949ed5 1335 u8 flags = 0;
fbbb262d
RH		 1336 if (qc->tf.flags & ATA_TFLAG_WRITE)
1337 flags |= NV_APRD_WRITE;
1338 if (idx == qc->n_elem - 1)
1339 flags |= NV_APRD_END;
1340 else if (idx != 4)
1341 flags |= NV_APRD_CONT;
1342
1343 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1344 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
2dec7555 1345 aprd->flags = flags;
41949ed5 1346 aprd->packet_len = 0;
fbbb262d
RH		 1347}
1348
1349static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1350{
1351 struct nv_adma_port_priv *pp = qc->ap->private_data;
fbbb262d
RH		 1352 struct nv_adma_prd *aprd;
1353 struct scatterlist *sg;
ff2aeb1e 1354 unsigned int si;
fbbb262d
RH		 1355
1356 VPRINTK("ENTER\n");
1357
ff2aeb1e
TH		 1358 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1359 aprd = (si < 5) ? &cpb->aprd[si] :
1360 &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (si-5)];
1361 nv_adma_fill_aprd(qc, sg, si, aprd);
fbbb262d 1362 }
ff2aeb1e 1363 if (si > 5)
fbbb262d 1364 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag)));
41949ed5
RH		 1365 else
1366 cpb->next_aprd = cpu_to_le64(0);
fbbb262d
RH		 1367}
1368
382a6652
RH		 1369static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1370{
1371 struct nv_adma_port_priv *pp = qc->ap->private_data;
1372
1373 /* ADMA engine can only be used for non-ATAPI DMA commands,
3f3debdb 1374 or interrupt-driven no-data commands. */
b447916e 1375 if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
3f3debdb 1376 (qc->tf.flags & ATA_TFLAG_POLLING))
382a6652
RH		 1377 return 1;
1378
b447916e 1379 if ((qc->flags & ATA_QCFLAG_DMAMAP) ||
382a6652
RH		 1380 (qc->tf.protocol == ATA_PROT_NODATA))
1381 return 0;
1382
1383 return 1;
1384}
1385
fbbb262d
RH		 1386static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1387{
1388 struct nv_adma_port_priv *pp = qc->ap->private_data;
1389 struct nv_adma_cpb *cpb = &pp->cpb[qc->tag];
1390 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
fbbb262d
RH		 1391 NV_CPB_CTL_IEN;
1392
382a6652 1393 if (nv_adma_use_reg_mode(qc)) {
3f3debdb
RH		 1394 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1395 (qc->flags & ATA_QCFLAG_DMAMAP));
2dec7555 1396 nv_adma_register_mode(qc->ap);
f47451c4 1397 ata_bmdma_qc_prep(qc);
fbbb262d
RH		 1398 return;
1399 }
1400
41949ed5
RH		 1401 cpb->resp_flags = NV_CPB_RESP_DONE;
1402 wmb();
1403 cpb->ctl_flags = 0;
1404 wmb();
fbbb262d
RH		 1405
1406 cpb->len = 3;
1407 cpb->tag = qc->tag;
1408 cpb->next_cpb_idx = 0;
1409
1410 /* turn on NCQ flags for NCQ commands */
1411 if (qc->tf.protocol == ATA_PROT_NCQ)
1412 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1413
cdf56bcf
RH		 1414 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1415
fbbb262d
RH		 1416 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1417
b447916e 1418 if (qc->flags & ATA_QCFLAG_DMAMAP) {
382a6652
RH		 1419 nv_adma_fill_sg(qc, cpb);
1420 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1421 } else
1422 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
fbbb262d 1423
5796d1c4
JG		 1424 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID
1425 until we are finished filling in all of the contents */
fbbb262d
RH		 1426 wmb();
1427 cpb->ctl_flags = ctl_flags;
41949ed5
RH		 1428 wmb();
1429 cpb->resp_flags = 0;
fbbb262d
RH		 1430}
1431
1432static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1433{
2dec7555 1434 struct nv_adma_port_priv *pp = qc->ap->private_data;
cdf56bcf 1435 void __iomem *mmio = pp->ctl_block;
5e5c74a5 1436 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
fbbb262d
RH		 1437
1438 VPRINTK("ENTER\n");
1439
3f3debdb
RH		 1440 /* We can't handle result taskfile with NCQ commands, since
1441 retrieving the taskfile switches us out of ADMA mode and would abort
1442 existing commands. */
1443 if (unlikely(qc->tf.protocol == ATA_PROT_NCQ &&
1444 (qc->flags & ATA_QCFLAG_RESULT_TF))) {
a9a79dfe 1445 ata_dev_err(qc->dev, "NCQ w/ RESULT_TF not allowed\n");
3f3debdb
RH		 1446 return AC_ERR_SYSTEM;
1447 }
1448
382a6652 1449 if (nv_adma_use_reg_mode(qc)) {
fbbb262d 1450 /* use ATA register mode */
382a6652 1451 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
3f3debdb
RH		 1452 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1453 (qc->flags & ATA_QCFLAG_DMAMAP));
fbbb262d 1454 nv_adma_register_mode(qc->ap);
360ff783 1455 return ata_bmdma_qc_issue(qc);
fbbb262d
RH		 1456 } else
1457 nv_adma_mode(qc->ap);
1458
1459 /* write append register, command tag in lower 8 bits
1460 and (number of cpbs to append -1) in top 8 bits */
1461 wmb();
5e5c74a5 1462
b447916e 1463 if (curr_ncq != pp->last_issue_ncq) {
5796d1c4
JG		 1464 /* Seems to need some delay before switching between NCQ and
1465 non-NCQ commands, else we get command timeouts and such. */
5e5c74a5
RH		 1466 udelay(20);
1467 pp->last_issue_ncq = curr_ncq;
1468 }
1469
fbbb262d
RH		 1470 writew(qc->tag, mmio + NV_ADMA_APPEND);
1471
5796d1c4 1472 DPRINTK("Issued tag %u\n", qc->tag);
fbbb262d
RH		 1473
1474 return 0;
1475}
1476
7d12e780 1477static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1da177e4 1478{
cca3974e 1479 struct ata_host *host = dev_instance;
1da177e4
LT		 1480 unsigned int i;
1481 unsigned int handled = 0;
1482 unsigned long flags;
1483
cca3974e 1484 spin_lock_irqsave(&host->lock, flags);
1da177e4 1485
cca3974e 1486 for (i = 0; i < host->n_ports; i++) {
3e4ec344
TH		 1487 struct ata_port *ap = host->ports[i];
1488 struct ata_queued_cmd *qc;
1da177e4 1489
3e4ec344
TH		 1490 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1491 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
c3b28894 1492 handled += ata_bmdma_port_intr(ap, qc);
3e4ec344
TH		 1493 } else {
1494 /*
1495 * No request pending? Clear interrupt status
1496 * anyway, in case there's one pending.
1497 */
1498 ap->ops->sff_check_status(ap);
1499 }
1da177e4
LT		 1500 }
1501
cca3974e 1502 spin_unlock_irqrestore(&host->lock, flags);
1da177e4
LT		 1503
1504 return IRQ_RETVAL(handled);
1505}
1506
cca3974e 1507static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
ada364e8
TH		 1508{
1509 int i, handled = 0;
1510
cca3974e 1511 for (i = 0; i < host->n_ports; i++) {
3e4ec344 1512 handled += nv_host_intr(host->ports[i], irq_stat);
ada364e8
TH		 1513 irq_stat >>= NV_INT_PORT_SHIFT;
1514 }
1515
1516 return IRQ_RETVAL(handled);
1517}
1518
7d12e780 1519static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
ada364e8 1520{
cca3974e 1521 struct ata_host *host = dev_instance;
ada364e8
TH		 1522 u8 irq_stat;
1523 irqreturn_t ret;
1524
cca3974e 1525 spin_lock(&host->lock);
0d5ff566 1526 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
cca3974e
JG		 1527 ret = nv_do_interrupt(host, irq_stat);
1528 spin_unlock(&host->lock);
ada364e8
TH		 1529
1530 return ret;
1531}
1532
7d12e780 1533static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
ada364e8 1534{
cca3974e 1535 struct ata_host *host = dev_instance;
ada364e8
TH		 1536 u8 irq_stat;
1537 irqreturn_t ret;
1538
cca3974e 1539 spin_lock(&host->lock);
0d5ff566 1540 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
cca3974e
JG		 1541 ret = nv_do_interrupt(host, irq_stat);
1542 spin_unlock(&host->lock);
ada364e8
TH		 1543
1544 return ret;
1545}
1546
82ef04fb 1547static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
1da177e4 1548{
1da177e4 1549 if (sc_reg > SCR_CONTROL)
da3dbb17 1550 return -EINVAL;
1da177e4 1551
82ef04fb 1552 *val = ioread32(link->ap->ioaddr.scr_addr + (sc_reg * 4));
da3dbb17 1553 return 0;
1da177e4
LT		 1554}
1555
82ef04fb 1556static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
1da177e4 1557{
1da177e4 1558 if (sc_reg > SCR_CONTROL)
da3dbb17 1559 return -EINVAL;
1da177e4 1560
82ef04fb 1561 iowrite32(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
da3dbb17 1562 return 0;
1da177e4
LT		 1563}
1564
7f4774b3
TH		 1565static int nv_hardreset(struct ata_link *link, unsigned int *class,
1566 unsigned long deadline)
e8caa3c7 1567{
7f4774b3 1568 struct ata_eh_context *ehc = &link->eh_context;
e8caa3c7 1569
7f4774b3
TH		 1570 /* Do hardreset iff it's post-boot probing, please read the
1571 * comment above port ops for details.
1572 */
1573 if (!(link->ap->pflags & ATA_PFLAG_LOADING) &&
1574 !ata_dev_enabled(link->device))
1575 sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
1576 NULL, NULL);
6489e326
TH		 1577 else {
1578 const unsigned long *timing = sata_ehc_deb_timing(ehc);
1579 int rc;
1580
1581 if (!(ehc->i.flags & ATA_EHI_QUIET))
a9a79dfe
JP		 1582 ata_link_info(link,
1583 "nv: skipping hardreset on occupied port\n");
6489e326
TH		 1584
1585 /* make sure the link is online */
1586 rc = sata_link_resume(link, timing, deadline);
1587 /* whine about phy resume failure but proceed */
1588 if (rc && rc != -EOPNOTSUPP)
a9a79dfe
JP		 1589 ata_link_warn(link, "failed to resume link (errno=%d)\n",
1590 rc);
6489e326 1591 }
7f4774b3
TH		 1592
1593 /* device signature acquisition is unreliable */
1594 return -EAGAIN;
e8caa3c7
TH		 1595}
1596
39f87582
TH		 1597static void nv_nf2_freeze(struct ata_port *ap)
1598{
0d5ff566 1599 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
39f87582
TH		 1600 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1601 u8 mask;
1602
0d5ff566 1603 mask = ioread8(scr_addr + NV_INT_ENABLE);
39f87582 1604 mask &= ~(NV_INT_ALL << shift);
0d5ff566 1605 iowrite8(mask, scr_addr + NV_INT_ENABLE);
39f87582
TH		 1606}
1607
1608static void nv_nf2_thaw(struct ata_port *ap)
1609{
0d5ff566 1610 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
39f87582
TH		 1611 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1612 u8 mask;
1613
0d5ff566 1614 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
39f87582 1615
0d5ff566 1616 mask = ioread8(scr_addr + NV_INT_ENABLE);
39f87582 1617 mask |= (NV_INT_MASK << shift);
0d5ff566 1618 iowrite8(mask, scr_addr + NV_INT_ENABLE);
39f87582
TH		 1619}
1620
1621static void nv_ck804_freeze(struct ata_port *ap)
1622{
0d5ff566 1623 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
39f87582
TH		 1624 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1625 u8 mask;
1626
1627 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1628 mask &= ~(NV_INT_ALL << shift);
1629 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1630}
1631
1632static void nv_ck804_thaw(struct ata_port *ap)
1633{
0d5ff566 1634 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
39f87582
TH		 1635 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1636 u8 mask;
1637
1638 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1639
1640 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1641 mask |= (NV_INT_MASK << shift);
1642 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1643}
1644
f140f0f1
KL		 1645static void nv_mcp55_freeze(struct ata_port *ap)
1646{
1647 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1648 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1649 u32 mask;
1650
1651 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1652
1653 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1654 mask &= ~(NV_INT_ALL_MCP55 << shift);
1655 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
f140f0f1
KL		 1656}
1657
1658static void nv_mcp55_thaw(struct ata_port *ap)
1659{
1660 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1661 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1662 u32 mask;
1663
1664 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1665
1666 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1667 mask |= (NV_INT_MASK_MCP55 << shift);
1668 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
f140f0f1
KL		 1669}
1670
fbbb262d
RH		 1671static void nv_adma_error_handler(struct ata_port *ap)
1672{
1673 struct nv_adma_port_priv *pp = ap->private_data;
b447916e 1674 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
cdf56bcf 1675 void __iomem *mmio = pp->ctl_block;
fbbb262d
RH		 1676 int i;
1677 u16 tmp;
a84471fe 1678
b447916e 1679 if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
2cb27853
RH		 1680 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1681 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1682 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1683 u32 status = readw(mmio + NV_ADMA_STAT);
08af7414
RH		 1684 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1685 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
2cb27853 1686
a9a79dfe 1687 ata_port_err(ap,
5796d1c4 1688 "EH in ADMA mode, notifier 0x%X "
08af7414
RH		 1689 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1690 "next cpb count 0x%X next cpb idx 0x%x\n",
1691 notifier, notifier_error, gen_ctl, status,
1692 cpb_count, next_cpb_idx);
2cb27853 1693
b447916e 1694 for (i = 0; i < NV_ADMA_MAX_CPBS; i++) {
2cb27853 1695 struct nv_adma_cpb *cpb = &pp->cpb[i];
b447916e 1696 if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
5796d1c4 1697 ap->link.sactive & (1 << i))
a9a79dfe 1698 ata_port_err(ap,
2cb27853
RH		 1699 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1700 i, cpb->ctl_flags, cpb->resp_flags);
1701 }
1702 }
fbbb262d 1703
fbbb262d
RH		 1704 /* Push us back into port register mode for error handling. */
1705 nv_adma_register_mode(ap);
1706
5796d1c4
JG		 1707 /* Mark all of the CPBs as invalid to prevent them from
1708 being executed */
b447916e 1709 for (i = 0; i < NV_ADMA_MAX_CPBS; i++)
fbbb262d
RH		 1710 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1711
1712 /* clear CPB fetch count */
1713 writew(0, mmio + NV_ADMA_CPB_COUNT);
1714
1715 /* Reset channel */
1716 tmp = readw(mmio + NV_ADMA_CTL);
1717 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
b447916e 1718 readw(mmio + NV_ADMA_CTL); /* flush posted write */
fbbb262d
RH		 1719 udelay(1);
1720 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
b447916e 1721 readw(mmio + NV_ADMA_CTL); /* flush posted write */
fbbb262d
RH		 1722 }
1723
fe06e5f9 1724 ata_bmdma_error_handler(ap);
fbbb262d
RH		 1725}
1726
f140f0f1
KL		 1727static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc)
1728{
1729 struct nv_swncq_port_priv *pp = ap->private_data;
1730 struct defer_queue *dq = &pp->defer_queue;
1731
1732 /* queue is full */
1733 WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE);
1734 dq->defer_bits |= (1 << qc->tag);
1735 dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->tag;
1736}
1737
1738static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap)
1739{
1740 struct nv_swncq_port_priv *pp = ap->private_data;
1741 struct defer_queue *dq = &pp->defer_queue;
1742 unsigned int tag;
1743
1744 if (dq->head == dq->tail) /* null queue */
1745 return NULL;
1746
1747 tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)];
1748 dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON;
1749 WARN_ON(!(dq->defer_bits & (1 << tag)));
1750 dq->defer_bits &= ~(1 << tag);
1751
1752 return ata_qc_from_tag(ap, tag);
1753}
1754
1755static void nv_swncq_fis_reinit(struct ata_port *ap)
1756{
1757 struct nv_swncq_port_priv *pp = ap->private_data;
1758
1759 pp->dhfis_bits = 0;
1760 pp->dmafis_bits = 0;
1761 pp->sdbfis_bits = 0;
1762 pp->ncq_flags = 0;
1763}
1764
1765static void nv_swncq_pp_reinit(struct ata_port *ap)
1766{
1767 struct nv_swncq_port_priv *pp = ap->private_data;
1768 struct defer_queue *dq = &pp->defer_queue;
1769
1770 dq->head = 0;
1771 dq->tail = 0;
1772 dq->defer_bits = 0;
1773 pp->qc_active = 0;
1774 pp->last_issue_tag = ATA_TAG_POISON;
1775 nv_swncq_fis_reinit(ap);
1776}
1777
1778static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis)
1779{
1780 struct nv_swncq_port_priv *pp = ap->private_data;
1781
1782 writew(fis, pp->irq_block);
1783}
1784
1785static void __ata_bmdma_stop(struct ata_port *ap)
1786{
1787 struct ata_queued_cmd qc;
1788
1789 qc.ap = ap;
1790 ata_bmdma_stop(&qc);
1791}
1792
1793static void nv_swncq_ncq_stop(struct ata_port *ap)
1794{
1795 struct nv_swncq_port_priv *pp = ap->private_data;
1796 unsigned int i;
1797 u32 sactive;
1798 u32 done_mask;
1799
a9a79dfe
JP		 1800 ata_port_err(ap, "EH in SWNCQ mode,QC:qc_active 0x%X sactive 0x%X\n",
1801 ap->qc_active, ap->link.sactive);
1802 ata_port_err(ap,
f140f0f1
KL		 1803 "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n "
1804 "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n",
1805 pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag,
1806 pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits);
1807
a9a79dfe
JP		 1808 ata_port_err(ap, "ATA_REG 0x%X ERR_REG 0x%X\n",
1809 ap->ops->sff_check_status(ap),
1810 ioread8(ap->ioaddr.error_addr));
f140f0f1
KL		 1811
1812 sactive = readl(pp->sactive_block);
1813 done_mask = pp->qc_active ^ sactive;
1814
a9a79dfe 1815 ata_port_err(ap, "tag : dhfis dmafis sdbfis sactive\n");
f140f0f1
KL		 1816 for (i = 0; i < ATA_MAX_QUEUE; i++) {
1817 u8 err = 0;
1818 if (pp->qc_active & (1 << i))
1819 err = 0;
1820 else if (done_mask & (1 << i))
1821 err = 1;
1822 else
1823 continue;
1824
a9a79dfe
JP		 1825 ata_port_err(ap,
1826 "tag 0x%x: %01x %01x %01x %01x %s\n", i,
1827 (pp->dhfis_bits >> i) & 0x1,
1828 (pp->dmafis_bits >> i) & 0x1,
1829 (pp->sdbfis_bits >> i) & 0x1,
1830 (sactive >> i) & 0x1,
1831 (err ? "error! tag doesn't exit" : " "));
f140f0f1
KL		 1832 }
1833
1834 nv_swncq_pp_reinit(ap);
5682ed33 1835 ap->ops->sff_irq_clear(ap);
f140f0f1
KL		 1836 __ata_bmdma_stop(ap);
1837 nv_swncq_irq_clear(ap, 0xffff);
1838}
1839
1840static void nv_swncq_error_handler(struct ata_port *ap)
1841{
1842 struct ata_eh_context *ehc = &ap->link.eh_context;
1843
1844 if (ap->link.sactive) {
1845 nv_swncq_ncq_stop(ap);
cf480626 1846 ehc->i.action |= ATA_EH_RESET;
f140f0f1
KL		 1847 }
1848
fe06e5f9 1849 ata_bmdma_error_handler(ap);
f140f0f1
KL		 1850}
1851
1852#ifdef CONFIG_PM
1853static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg)
1854{
1855 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1856 u32 tmp;
1857
1858 /* clear irq */
1859 writel(~0, mmio + NV_INT_STATUS_MCP55);
1860
1861 /* disable irq */
1862 writel(0, mmio + NV_INT_ENABLE_MCP55);
1863
1864 /* disable swncq */
1865 tmp = readl(mmio + NV_CTL_MCP55);
1866 tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ);
1867 writel(tmp, mmio + NV_CTL_MCP55);
1868
1869 return 0;
1870}
1871
1872static int nv_swncq_port_resume(struct ata_port *ap)
1873{
1874 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1875 u32 tmp;
1876
1877 /* clear irq */
1878 writel(~0, mmio + NV_INT_STATUS_MCP55);
1879
1880 /* enable irq */
1881 writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1882
1883 /* enable swncq */
1884 tmp = readl(mmio + NV_CTL_MCP55);
1885 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1886
1887 return 0;
1888}
1889#endif
1890
1891static void nv_swncq_host_init(struct ata_host *host)
1892{
1893 u32 tmp;
1894 void __iomem *mmio = host->iomap[NV_MMIO_BAR];
1895 struct pci_dev *pdev = to_pci_dev(host->dev);
1896 u8 regval;
1897
1898 /* disable ECO 398 */
1899 pci_read_config_byte(pdev, 0x7f, &regval);
1900 regval &= ~(1 << 7);
1901 pci_write_config_byte(pdev, 0x7f, regval);
1902
1903 /* enable swncq */
1904 tmp = readl(mmio + NV_CTL_MCP55);
1905 VPRINTK("HOST_CTL:0x%X\n", tmp);
1906 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1907
1908 /* enable irq intr */
1909 tmp = readl(mmio + NV_INT_ENABLE_MCP55);
1910 VPRINTK("HOST_ENABLE:0x%X\n", tmp);
1911 writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1912
1913 /* clear port irq */
1914 writel(~0x0, mmio + NV_INT_STATUS_MCP55);
1915}
1916
1917static int nv_swncq_slave_config(struct scsi_device *sdev)
1918{
1919 struct ata_port *ap = ata_shost_to_port(sdev->host);
1920 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
1921 struct ata_device *dev;
1922 int rc;
1923 u8 rev;
1924 u8 check_maxtor = 0;
1925 unsigned char model_num[ATA_ID_PROD_LEN + 1];
1926
1927 rc = ata_scsi_slave_config(sdev);
1928 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
1929 /* Not a proper libata device, ignore */
1930 return rc;
1931
1932 dev = &ap->link.device[sdev->id];
1933 if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI)
1934 return rc;
1935
1936 /* if MCP51 and Maxtor, then disable ncq */
1937 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA ||
1938 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2)
1939 check_maxtor = 1;
1940
1941 /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */
1942 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA ||
1943 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) {
1944 pci_read_config_byte(pdev, 0x8, &rev);
1945 if (rev <= 0xa2)
1946 check_maxtor = 1;
1947 }
1948
1949 if (!check_maxtor)
1950 return rc;
1951
1952 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
1953
1954 if (strncmp(model_num, "Maxtor", 6) == 0) {
e881a172 1955 ata_scsi_change_queue_depth(sdev, 1, SCSI_QDEPTH_DEFAULT);
a9a79dfe
JP		 1956 ata_dev_notice(dev, "Disabling SWNCQ mode (depth %x)\n",
1957 sdev->queue_depth);
f140f0f1
KL		 1958 }
1959
1960 return rc;
1961}
1962
1963static int nv_swncq_port_start(struct ata_port *ap)
1964{
1965 struct device *dev = ap->host->dev;
1966 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1967 struct nv_swncq_port_priv *pp;
1968 int rc;
1969
c7087652
TH		 1970 /* we might fallback to bmdma, allocate bmdma resources */
1971 rc = ata_bmdma_port_start(ap);
f140f0f1
KL		 1972 if (rc)
1973 return rc;
1974
1975 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1976 if (!pp)
1977 return -ENOMEM;
1978
1979 pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE,
1980 &pp->prd_dma, GFP_KERNEL);
1981 if (!pp->prd)
1982 return -ENOMEM;
1983 memset(pp->prd, 0, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE);
1984
1985 ap->private_data = pp;
1986 pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE;
1987 pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2;
1988 pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2;
1989
1990 return 0;
1991}
1992
1993static void nv_swncq_qc_prep(struct ata_queued_cmd *qc)
1994{
1995 if (qc->tf.protocol != ATA_PROT_NCQ) {
f47451c4 1996 ata_bmdma_qc_prep(qc);
f140f0f1
KL		 1997 return;
1998 }
1999
2000 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
2001 return;
2002
2003 nv_swncq_fill_sg(qc);
2004}
2005
2006static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
2007{
2008 struct ata_port *ap = qc->ap;
2009 struct scatterlist *sg;
f140f0f1 2010 struct nv_swncq_port_priv *pp = ap->private_data;
f60d7011 2011 struct ata_bmdma_prd *prd;
ff2aeb1e 2012 unsigned int si, idx;
f140f0f1
KL		 2013
2014 prd = pp->prd + ATA_MAX_PRD * qc->tag;
2015
2016 idx = 0;
ff2aeb1e 2017 for_each_sg(qc->sg, sg, qc->n_elem, si) {
f140f0f1
KL		 2018 u32 addr, offset;
2019 u32 sg_len, len;
2020
2021 addr = (u32)sg_dma_address(sg);
2022 sg_len = sg_dma_len(sg);
2023
2024 while (sg_len) {
2025 offset = addr & 0xffff;
2026 len = sg_len;
2027 if ((offset + sg_len) > 0x10000)
2028 len = 0x10000 - offset;
2029
2030 prd[idx].addr = cpu_to_le32(addr);
2031 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
2032
2033 idx++;
2034 sg_len -= len;
2035 addr += len;
2036 }
2037 }
2038
ff2aeb1e 2039 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
f140f0f1
KL		 2040}
2041
2042static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap,
2043 struct ata_queued_cmd *qc)
2044{
2045 struct nv_swncq_port_priv *pp = ap->private_data;
2046
2047 if (qc == NULL)
2048 return 0;
2049
2050 DPRINTK("Enter\n");
2051
2052 writel((1 << qc->tag), pp->sactive_block);
2053 pp->last_issue_tag = qc->tag;
2054 pp->dhfis_bits &= ~(1 << qc->tag);
2055 pp->dmafis_bits &= ~(1 << qc->tag);
2056 pp->qc_active |= (0x1 << qc->tag);
2057
5682ed33
TH		 2058 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */
2059 ap->ops->sff_exec_command(ap, &qc->tf);
f140f0f1
KL		 2060
2061 DPRINTK("Issued tag %u\n", qc->tag);
2062
2063 return 0;
2064}
2065
2066static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc)
2067{
2068 struct ata_port *ap = qc->ap;
2069 struct nv_swncq_port_priv *pp = ap->private_data;
2070
2071 if (qc->tf.protocol != ATA_PROT_NCQ)
360ff783 2072 return ata_bmdma_qc_issue(qc);
f140f0f1
KL		 2073
2074 DPRINTK("Enter\n");
2075
2076 if (!pp->qc_active)
2077 nv_swncq_issue_atacmd(ap, qc);
2078 else
2079 nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */
2080
2081 return 0;
2082}
2083
2084static void nv_swncq_hotplug(struct ata_port *ap, u32 fis)
2085{
2086 u32 serror;
2087 struct ata_eh_info *ehi = &ap->link.eh_info;
2088
2089 ata_ehi_clear_desc(ehi);
2090
2091 /* AHCI needs SError cleared; otherwise, it might lock up */
2092 sata_scr_read(&ap->link, SCR_ERROR, &serror);
2093 sata_scr_write(&ap->link, SCR_ERROR, serror);
2094
2095 /* analyze @irq_stat */
2096 if (fis & NV_SWNCQ_IRQ_ADDED)
2097 ata_ehi_push_desc(ehi, "hot plug");
2098 else if (fis & NV_SWNCQ_IRQ_REMOVED)
2099 ata_ehi_push_desc(ehi, "hot unplug");
2100
2101 ata_ehi_hotplugged(ehi);
2102
2103 /* okay, let's hand over to EH */
2104 ehi->serror |= serror;
2105
2106 ata_port_freeze(ap);
2107}
2108
2109static int nv_swncq_sdbfis(struct ata_port *ap)
2110{
2111 struct ata_queued_cmd *qc;
2112 struct nv_swncq_port_priv *pp = ap->private_data;
2113 struct ata_eh_info *ehi = &ap->link.eh_info;
2114 u32 sactive;
f140f0f1 2115 u32 done_mask;
f140f0f1
KL		 2116 u8 host_stat;
2117 u8 lack_dhfis = 0;
2118
2119 host_stat = ap->ops->bmdma_status(ap);
2120 if (unlikely(host_stat & ATA_DMA_ERR)) {
25985edc 2121 /* error when transferring data to/from memory */
f140f0f1
KL		 2122 ata_ehi_clear_desc(ehi);
2123 ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
2124 ehi->err_mask |= AC_ERR_HOST_BUS;
cf480626 2125 ehi->action |= ATA_EH_RESET;
f140f0f1
KL		 2126 return -EINVAL;
2127 }
2128
5682ed33 2129 ap->ops->sff_irq_clear(ap);
f140f0f1
KL		 2130 __ata_bmdma_stop(ap);
2131
2132 sactive = readl(pp->sactive_block);
2133 done_mask = pp->qc_active ^ sactive;
2134
1aadf5c3
TH		 2135 pp->qc_active &= ~done_mask;
2136 pp->dhfis_bits &= ~done_mask;
2137 pp->dmafis_bits &= ~done_mask;
2138 pp->sdbfis_bits |= done_mask;
2139 ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask);
f140f0f1
KL		 2140
2141 if (!ap->qc_active) {
2142 DPRINTK("over\n");
2143 nv_swncq_pp_reinit(ap);
752e386c 2144 return 0;
f140f0f1
KL		 2145 }
2146
2147 if (pp->qc_active & pp->dhfis_bits)
752e386c 2148 return 0;
f140f0f1
KL		 2149
2150 if ((pp->ncq_flags & ncq_saw_backout) ||
2151 (pp->qc_active ^ pp->dhfis_bits))
752e386c 2152 /* if the controller can't get a device to host register FIS,
f140f0f1
KL		 2153 * The driver needs to reissue the new command.
2154 */
2155 lack_dhfis = 1;
2156
2157 DPRINTK("id 0x%x QC: qc_active 0x%x,"
2158 "SWNCQ:qc_active 0x%X defer_bits %X "
2159 "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n",
2160 ap->print_id, ap->qc_active, pp->qc_active,
2161 pp->defer_queue.defer_bits, pp->dhfis_bits,
2162 pp->dmafis_bits, pp->last_issue_tag);
2163
2164 nv_swncq_fis_reinit(ap);
2165
2166 if (lack_dhfis) {
2167 qc = ata_qc_from_tag(ap, pp->last_issue_tag);
2168 nv_swncq_issue_atacmd(ap, qc);
752e386c 2169 return 0;
f140f0f1
KL		 2170 }
2171
2172 if (pp->defer_queue.defer_bits) {
2173 /* send deferral queue command */
2174 qc = nv_swncq_qc_from_dq(ap);
2175 WARN_ON(qc == NULL);
2176 nv_swncq_issue_atacmd(ap, qc);
2177 }
2178
752e386c 2179 return 0;
f140f0f1
KL		 2180}
2181
2182static inline u32 nv_swncq_tag(struct ata_port *ap)
2183{
2184 struct nv_swncq_port_priv *pp = ap->private_data;
2185 u32 tag;
2186
2187 tag = readb(pp->tag_block) >> 2;
2188 return (tag & 0x1f);
2189}
2190
752e386c 2191static void nv_swncq_dmafis(struct ata_port *ap)
f140f0f1
KL		 2192{
2193 struct ata_queued_cmd *qc;
2194 unsigned int rw;
2195 u8 dmactl;
2196 u32 tag;
2197 struct nv_swncq_port_priv *pp = ap->private_data;
2198
2199 __ata_bmdma_stop(ap);
2200 tag = nv_swncq_tag(ap);
2201
2202 DPRINTK("dma setup tag 0x%x\n", tag);
2203 qc = ata_qc_from_tag(ap, tag);
2204
2205 if (unlikely(!qc))
752e386c 2206 return;
f140f0f1
KL		 2207
2208 rw = qc->tf.flags & ATA_TFLAG_WRITE;
2209
2210 /* load PRD table addr. */
2211 iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->tag,
2212 ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
2213
2214 /* specify data direction, triple-check start bit is clear */
2215 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2216 dmactl &= ~ATA_DMA_WR;
2217 if (!rw)
2218 dmactl |= ATA_DMA_WR;
2219
2220 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
f140f0f1
KL		 2221}
2222
2223static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
2224{
2225 struct nv_swncq_port_priv *pp = ap->private_data;
2226 struct ata_queued_cmd *qc;
2227 struct ata_eh_info *ehi = &ap->link.eh_info;
2228 u32 serror;
2229 u8 ata_stat;
f140f0f1 2230
5682ed33 2231 ata_stat = ap->ops->sff_check_status(ap);
f140f0f1
KL		 2232 nv_swncq_irq_clear(ap, fis);
2233 if (!fis)
2234 return;
2235
2236 if (ap->pflags & ATA_PFLAG_FROZEN)
2237 return;
2238
2239 if (fis & NV_SWNCQ_IRQ_HOTPLUG) {
2240 nv_swncq_hotplug(ap, fis);
2241 return;
2242 }
2243
2244 if (!pp->qc_active)
2245 return;
2246
82ef04fb 2247 if (ap->ops->scr_read(&ap->link, SCR_ERROR, &serror))
f140f0f1 2248 return;
82ef04fb 2249 ap->ops->scr_write(&ap->link, SCR_ERROR, serror);
f140f0f1
KL		 2250
2251 if (ata_stat & ATA_ERR) {
2252 ata_ehi_clear_desc(ehi);
2253 ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis);
2254 ehi->err_mask |= AC_ERR_DEV;
2255 ehi->serror |= serror;
cf480626 2256 ehi->action |= ATA_EH_RESET;
f140f0f1
KL		 2257 ata_port_freeze(ap);
2258 return;
2259 }
2260
2261 if (fis & NV_SWNCQ_IRQ_BACKOUT) {
2262 /* If the IRQ is backout, driver must issue
2263 * the new command again some time later.
2264 */
2265 pp->ncq_flags |= ncq_saw_backout;
2266 }
2267
2268 if (fis & NV_SWNCQ_IRQ_SDBFIS) {
2269 pp->ncq_flags |= ncq_saw_sdb;
2270 DPRINTK("id 0x%x SWNCQ: qc_active 0x%X "
2271 "dhfis 0x%X dmafis 0x%X sactive 0x%X\n",
2272 ap->print_id, pp->qc_active, pp->dhfis_bits,
2273 pp->dmafis_bits, readl(pp->sactive_block));
752e386c 2274 if (nv_swncq_sdbfis(ap) < 0)
f140f0f1
KL		 2275 goto irq_error;
2276 }
2277
2278 if (fis & NV_SWNCQ_IRQ_DHREGFIS) {
2279 /* The interrupt indicates the new command
2280 * was transmitted correctly to the drive.
2281 */
2282 pp->dhfis_bits |= (0x1 << pp->last_issue_tag);
2283 pp->ncq_flags |= ncq_saw_d2h;
2284 if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) {
2285 ata_ehi_push_desc(ehi, "illegal fis transaction");
2286 ehi->err_mask |= AC_ERR_HSM;
cf480626 2287 ehi->action |= ATA_EH_RESET;
f140f0f1
KL		 2288 goto irq_error;
2289 }
2290
2291 if (!(fis & NV_SWNCQ_IRQ_DMASETUP) &&
2292 !(pp->ncq_flags & ncq_saw_dmas)) {
5682ed33 2293 ata_stat = ap->ops->sff_check_status(ap);
f140f0f1
KL		 2294 if (ata_stat & ATA_BUSY)
2295 goto irq_exit;
2296
2297 if (pp->defer_queue.defer_bits) {
2298 DPRINTK("send next command\n");
2299 qc = nv_swncq_qc_from_dq(ap);
2300 nv_swncq_issue_atacmd(ap, qc);
2301 }
2302 }
2303 }
2304
2305 if (fis & NV_SWNCQ_IRQ_DMASETUP) {
2306 /* program the dma controller with appropriate PRD buffers
2307 * and start the DMA transfer for requested command.
2308 */
2309 pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap));
2310 pp->ncq_flags |= ncq_saw_dmas;
752e386c 2311 nv_swncq_dmafis(ap);
f140f0f1
KL		 2312 }
2313
2314irq_exit:
2315 return;
2316irq_error:
2317 ata_ehi_push_desc(ehi, "fis:0x%x", fis);
2318 ata_port_freeze(ap);
2319 return;
2320}
2321
2322static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance)
2323{
2324 struct ata_host *host = dev_instance;
2325 unsigned int i;
2326 unsigned int handled = 0;
2327 unsigned long flags;
2328 u32 irq_stat;
2329
2330 spin_lock_irqsave(&host->lock, flags);
2331
2332 irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55);
2333
2334 for (i = 0; i < host->n_ports; i++) {
2335 struct ata_port *ap = host->ports[i];
2336
3e4ec344
TH		 2337 if (ap->link.sactive) {
2338 nv_swncq_host_interrupt(ap, (u16)irq_stat);
2339 handled = 1;
2340 } else {
2341 if (irq_stat) /* reserve Hotplug */
2342 nv_swncq_irq_clear(ap, 0xfff0);
f140f0f1 2343
3e4ec344 2344 handled += nv_host_intr(ap, (u8)irq_stat);
f140f0f1
KL		 2345 }
2346 irq_stat >>= NV_INT_PORT_SHIFT_MCP55;
2347 }
2348
2349 spin_unlock_irqrestore(&host->lock, flags);
2350
2351 return IRQ_RETVAL(handled);
2352}
2353
5796d1c4 2354static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1da177e4 2355{
1626aeb8 2356 const struct ata_port_info *ppi[] = { NULL, NULL };
95947193 2357 struct nv_pi_priv *ipriv;
9a829ccf 2358 struct ata_host *host;
cdf56bcf 2359 struct nv_host_priv *hpriv;
1da177e4
LT		 2360 int rc;
2361 u32 bar;
0d5ff566 2362 void __iomem *base;
fbbb262d 2363 unsigned long type = ent->driver_data;
1da177e4
LT		 2364
2365 // Make sure this is a SATA controller by counting the number of bars
2366 // (NVIDIA SATA controllers will always have six bars). Otherwise,
2367 // it's an IDE controller and we ignore it.
5796d1c4 2368 for (bar = 0; bar < 6; bar++)
1da177e4
LT		 2369 if (pci_resource_start(pdev, bar) == 0)
2370 return -ENODEV;
2371
06296a1e 2372 ata_print_version_once(&pdev->dev, DRV_VERSION);
1da177e4 2373
24dc5f33 2374 rc = pcim_enable_device(pdev);
1da177e4 2375 if (rc)
24dc5f33 2376 return rc;
1da177e4 2377
9a829ccf 2378 /* determine type and allocate host */
f140f0f1 2379 if (type == CK804 && adma_enabled) {
a44fec1f 2380 dev_notice(&pdev->dev, "Using ADMA mode\n");
fbbb262d 2381 type = ADMA;
2d775708 2382 } else if (type == MCP5x && swncq_enabled) {
a44fec1f 2383 dev_notice(&pdev->dev, "Using SWNCQ mode\n");
2d775708 2384 type = SWNCQ;
360737a9
JG		 2385 }
2386
1626aeb8 2387 ppi[0] = &nv_port_info[type];
95947193 2388 ipriv = ppi[0]->private_data;
1c5afdf7 2389 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
9a829ccf
TH		 2390 if (rc)
2391 return rc;
1da177e4 2392
24dc5f33 2393 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
cdf56bcf 2394 if (!hpriv)
24dc5f33 2395 return -ENOMEM;
9a829ccf
TH		 2396 hpriv->type = type;
2397 host->private_data = hpriv;
cdf56bcf 2398
9a829ccf
TH		 2399 /* request and iomap NV_MMIO_BAR */
2400 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
2401 if (rc)
2402 return rc;
1da177e4 2403
9a829ccf
TH		 2404 /* configure SCR access */
2405 base = host->iomap[NV_MMIO_BAR];
2406 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
2407 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
1da177e4 2408
ada364e8 2409 /* enable SATA space for CK804 */
fbbb262d 2410 if (type >= CK804) {
ada364e8
TH		 2411 u8 regval;
2412
2413 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2414 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2415 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2416 }
2417
9a829ccf 2418 /* init ADMA */
fbbb262d 2419 if (type == ADMA) {
9a829ccf 2420 rc = nv_adma_host_init(host);
fbbb262d 2421 if (rc)
24dc5f33 2422 return rc;
360737a9 2423 } else if (type == SWNCQ)
f140f0f1 2424 nv_swncq_host_init(host);
fbbb262d 2425
51c89499 2426 if (msi_enabled) {
a44fec1f 2427 dev_notice(&pdev->dev, "Using MSI\n");
51c89499
TV		 2428 pci_enable_msi(pdev);
2429 }
2430
9a829ccf 2431 pci_set_master(pdev);
95cc2c70 2432 return ata_pci_sff_activate_host(host, ipriv->irq_handler, ipriv->sht);
1da177e4
LT		 2433}
2434
438ac6d5 2435#ifdef CONFIG_PM
cdf56bcf
RH		 2436static int nv_pci_device_resume(struct pci_dev *pdev)
2437{
2438 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2439 struct nv_host_priv *hpriv = host->private_data;
ce053fa8 2440 int rc;
cdf56bcf 2441
ce053fa8 2442 rc = ata_pci_device_do_resume(pdev);
b447916e 2443 if (rc)
ce053fa8 2444 return rc;
cdf56bcf
RH		 2445
2446 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
b447916e 2447 if (hpriv->type >= CK804) {
cdf56bcf
RH		 2448 u8 regval;
2449
2450 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2451 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2452 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2453 }
b447916e 2454 if (hpriv->type == ADMA) {
cdf56bcf
RH		 2455 u32 tmp32;
2456 struct nv_adma_port_priv *pp;
2457 /* enable/disable ADMA on the ports appropriately */
2458 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2459
2460 pp = host->ports[0]->private_data;
b447916e 2461 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
cdf56bcf 2462 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
5796d1c4 2463 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
cdf56bcf
RH		 2464 else
2465 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
5796d1c4 2466 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
cdf56bcf 2467 pp = host->ports[1]->private_data;
b447916e 2468 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
cdf56bcf 2469 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
5796d1c4 2470 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
cdf56bcf
RH		 2471 else
2472 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
5796d1c4 2473 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
cdf56bcf
RH		 2474
2475 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2476 }
2477 }
2478
2479 ata_host_resume(host);
2480
2481 return 0;
2482}
438ac6d5 2483#endif
cdf56bcf 2484
cca3974e 2485static void nv_ck804_host_stop(struct ata_host *host)
ada364e8 2486{
cca3974e 2487 struct pci_dev *pdev = to_pci_dev(host->dev);
ada364e8
TH		 2488 u8 regval;
2489
2490 /* disable SATA space for CK804 */
2491 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2492 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2493 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
ada364e8
TH		 2494}
2495
fbbb262d
RH		 2496static void nv_adma_host_stop(struct ata_host *host)
2497{
2498 struct pci_dev *pdev = to_pci_dev(host->dev);
fbbb262d
RH		 2499 u32 tmp32;
2500
fbbb262d
RH		 2501 /* disable ADMA on the ports */
2502 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2503 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2504 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
2505 NV_MCP_SATA_CFG_20_PORT1_EN |
2506 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2507
2508 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2509
2510 nv_ck804_host_stop(host);
2511}
2512
1da177e4
LT		 2513static int __init nv_init(void)
2514{
b7887196 2515 return pci_register_driver(&nv_pci_driver);
1da177e4
LT		 2516}
2517
2518static void __exit nv_exit(void)
2519{
2520 pci_unregister_driver(&nv_pci_driver);
2521}
2522
2523module_init(nv_init);
2524module_exit(nv_exit);
fbbb262d 2525module_param_named(adma, adma_enabled, bool, 0444);
55f784c8 2526MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: false)");
f140f0f1 2527module_param_named(swncq, swncq_enabled, bool, 0444);
d21279f4 2528MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");
51c89499
TV		 2529module_param_named(msi, msi_enabled, bool, 0444);
2530MODULE_PARM_DESC(msi, "Enable use of MSI (Default: false)");
f140f0f1 2531
Empty description
This page took 1.063482 seconds and 4 git commands to generate.