1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * sata_nv.c - NVIDIA nForce SATA
5 * Copyright 2004 NVIDIA Corp. All rights reserved.
6 * Copyright 2004 Andrew Chew
8 * libata documentation is available via 'make {ps|pdf}docs',
9 * as Documentation/driver-api/libata.rst
11 * No hardware documentation available outside of NVIDIA.
12 * This driver programs the NVIDIA SATA controller in a similar
13 * fashion as with other PCI IDE BMDMA controllers, with a few
14 * NV-specific details such as register offsets, SATA phy location,
17 * CK804/MCP04 controllers support an alternate programming interface
18 * similar to the ADMA specification (with some modifications).
19 * This allows the use of NCQ. Non-DMA-mapped ATA commands are still
20 * sent through the legacy interface.
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/gfp.h>
26 #include <linux/pci.h>
27 #include <linux/blkdev.h>
28 #include <linux/delay.h>
29 #include <linux/interrupt.h>
30 #include <linux/device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_device.h>
33 #include <linux/libata.h>
34 #include <trace/events/libata.h>
36 #define DRV_NAME "sata_nv"
37 #define DRV_VERSION "3.5"
39 #define NV_ADMA_DMA_BOUNDARY 0xffffffffUL
45 NV_PIO_MASK = ATA_PIO4,
46 NV_MWDMA_MASK = ATA_MWDMA2,
47 NV_UDMA_MASK = ATA_UDMA6,
48 NV_PORT0_SCR_REG_OFFSET = 0x00,
49 NV_PORT1_SCR_REG_OFFSET = 0x40,
51 /* INT_STATUS/ENABLE */
54 NV_INT_STATUS_CK804 = 0x440,
55 NV_INT_ENABLE_CK804 = 0x441,
57 /* INT_STATUS/ENABLE bits */
61 NV_INT_REMOVED = 0x08,
63 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
66 NV_INT_MASK = NV_INT_DEV |
67 NV_INT_ADDED | NV_INT_REMOVED,
71 NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI
73 // For PCI config register 20
74 NV_MCP_SATA_CFG_20 = 0x50,
75 NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04,
76 NV_MCP_SATA_CFG_20_PORT0_EN = (1 << 17),
77 NV_MCP_SATA_CFG_20_PORT1_EN = (1 << 16),
78 NV_MCP_SATA_CFG_20_PORT0_PWB_EN = (1 << 14),
79 NV_MCP_SATA_CFG_20_PORT1_PWB_EN = (1 << 12),
81 NV_ADMA_MAX_CPBS = 32,
84 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
86 NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5,
87 NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ,
88 NV_ADMA_PORT_PRIV_DMA_SZ = NV_ADMA_MAX_CPBS *
89 (NV_ADMA_CPB_SZ + NV_ADMA_SGTBL_SZ),
91 /* BAR5 offset to ADMA general registers */
93 NV_ADMA_GEN_CTL = 0x00,
94 NV_ADMA_NOTIFIER_CLEAR = 0x30,
96 /* BAR5 offset to ADMA ports */
99 /* size of ADMA port register space */
100 NV_ADMA_PORT_SIZE = 0x100,
102 /* ADMA port registers */
104 NV_ADMA_CPB_COUNT = 0x42,
105 NV_ADMA_NEXT_CPB_IDX = 0x43,
107 NV_ADMA_CPB_BASE_LOW = 0x48,
108 NV_ADMA_CPB_BASE_HIGH = 0x4C,
109 NV_ADMA_APPEND = 0x50,
110 NV_ADMA_NOTIFIER = 0x68,
111 NV_ADMA_NOTIFIER_ERROR = 0x6C,
113 /* NV_ADMA_CTL register bits */
114 NV_ADMA_CTL_HOTPLUG_IEN = (1 << 0),
115 NV_ADMA_CTL_CHANNEL_RESET = (1 << 5),
116 NV_ADMA_CTL_GO = (1 << 7),
117 NV_ADMA_CTL_AIEN = (1 << 8),
118 NV_ADMA_CTL_READ_NON_COHERENT = (1 << 11),
119 NV_ADMA_CTL_WRITE_NON_COHERENT = (1 << 12),
121 /* CPB response flag bits */
122 NV_CPB_RESP_DONE = (1 << 0),
123 NV_CPB_RESP_ATA_ERR = (1 << 3),
124 NV_CPB_RESP_CMD_ERR = (1 << 4),
125 NV_CPB_RESP_CPB_ERR = (1 << 7),
127 /* CPB control flag bits */
128 NV_CPB_CTL_CPB_VALID = (1 << 0),
129 NV_CPB_CTL_QUEUE = (1 << 1),
130 NV_CPB_CTL_APRD_VALID = (1 << 2),
131 NV_CPB_CTL_IEN = (1 << 3),
132 NV_CPB_CTL_FPDMA = (1 << 4),
135 NV_APRD_WRITE = (1 << 1),
136 NV_APRD_END = (1 << 2),
137 NV_APRD_CONT = (1 << 3),
139 /* NV_ADMA_STAT flags */
140 NV_ADMA_STAT_TIMEOUT = (1 << 0),
141 NV_ADMA_STAT_HOTUNPLUG = (1 << 1),
142 NV_ADMA_STAT_HOTPLUG = (1 << 2),
143 NV_ADMA_STAT_CPBERR = (1 << 4),
144 NV_ADMA_STAT_SERROR = (1 << 5),
145 NV_ADMA_STAT_CMD_COMPLETE = (1 << 6),
146 NV_ADMA_STAT_IDLE = (1 << 8),
147 NV_ADMA_STAT_LEGACY = (1 << 9),
148 NV_ADMA_STAT_STOPPED = (1 << 10),
149 NV_ADMA_STAT_DONE = (1 << 12),
150 NV_ADMA_STAT_ERR = NV_ADMA_STAT_CPBERR |
151 NV_ADMA_STAT_TIMEOUT,
154 NV_ADMA_PORT_REGISTER_MODE = (1 << 0),
155 NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1),
157 /* MCP55 reg offset */
158 NV_CTL_MCP55 = 0x400,
159 NV_INT_STATUS_MCP55 = 0x440,
160 NV_INT_ENABLE_MCP55 = 0x444,
161 NV_NCQ_REG_MCP55 = 0x448,
164 NV_INT_ALL_MCP55 = 0xffff,
165 NV_INT_PORT_SHIFT_MCP55 = 16, /* each port occupies 16 bits */
166 NV_INT_MASK_MCP55 = NV_INT_ALL_MCP55 & 0xfffd,
168 /* SWNCQ ENABLE BITS*/
169 NV_CTL_PRI_SWNCQ = 0x02,
170 NV_CTL_SEC_SWNCQ = 0x04,
172 /* SW NCQ status bits*/
173 NV_SWNCQ_IRQ_DEV = (1 << 0),
174 NV_SWNCQ_IRQ_PM = (1 << 1),
175 NV_SWNCQ_IRQ_ADDED = (1 << 2),
176 NV_SWNCQ_IRQ_REMOVED = (1 << 3),
178 NV_SWNCQ_IRQ_BACKOUT = (1 << 4),
179 NV_SWNCQ_IRQ_SDBFIS = (1 << 5),
180 NV_SWNCQ_IRQ_DHREGFIS = (1 << 6),
181 NV_SWNCQ_IRQ_DMASETUP = (1 << 7),
183 NV_SWNCQ_IRQ_HOTPLUG = NV_SWNCQ_IRQ_ADDED |
184 NV_SWNCQ_IRQ_REMOVED,
188 /* ADMA Physical Region Descriptor - one SG segment */
197 enum nv_adma_regbits {
198 CMDEND = (1 << 15), /* end of command list */
199 WNB = (1 << 14), /* wait-not-BSY */
200 IGN = (1 << 13), /* ignore this entry */
201 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
202 DA2 = (1 << (2 + 8)),
203 DA1 = (1 << (1 + 8)),
204 DA0 = (1 << (0 + 8)),
207 /* ADMA Command Parameter Block
208 The first 5 SG segments are stored inside the Command Parameter Block itself.
209 If there are more than 5 segments the remainder are stored in a separate
210 memory area indicated by next_aprd. */
212 u8 resp_flags; /* 0 */
213 u8 reserved1; /* 1 */
214 u8 ctl_flags; /* 2 */
215 /* len is length of taskfile in 64 bit words */
218 u8 next_cpb_idx; /* 5 */
219 __le16 reserved2; /* 6-7 */
220 __le16 tf[12]; /* 8-31 */
221 struct nv_adma_prd aprd[5]; /* 32-111 */
222 __le64 next_aprd; /* 112-119 */
223 __le64 reserved3; /* 120-127 */
227 struct nv_adma_port_priv {
228 struct nv_adma_cpb *cpb;
230 struct nv_adma_prd *aprd;
232 void __iomem *ctl_block;
233 void __iomem *gen_block;
234 void __iomem *notifier_clear_block;
240 struct nv_host_priv {
248 unsigned int tag[ATA_MAX_QUEUE];
251 enum ncq_saw_flag_list {
252 ncq_saw_d2h = (1U << 0),
253 ncq_saw_dmas = (1U << 1),
254 ncq_saw_sdb = (1U << 2),
255 ncq_saw_backout = (1U << 3),
258 struct nv_swncq_port_priv {
259 struct ata_bmdma_prd *prd; /* our SG list */
260 dma_addr_t prd_dma; /* and its DMA mapping */
261 void __iomem *sactive_block;
262 void __iomem *irq_block;
263 void __iomem *tag_block;
266 unsigned int last_issue_tag;
268 /* fifo circular queue to store deferral command */
269 struct defer_queue defer_queue;
271 /* for NCQ interrupt analysis */
276 unsigned int ncq_flags;
280 #define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & (1 << (19 + (12 * (PORT)))))
282 static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
283 #ifdef CONFIG_PM_SLEEP
284 static int nv_pci_device_resume(struct pci_dev *pdev);
286 static void nv_ck804_host_stop(struct ata_host *host);
287 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
288 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
289 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
290 static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
291 static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
293 static int nv_hardreset(struct ata_link *link, unsigned int *class,
294 unsigned long deadline);
295 static void nv_nf2_freeze(struct ata_port *ap);
296 static void nv_nf2_thaw(struct ata_port *ap);
297 static void nv_ck804_freeze(struct ata_port *ap);
298 static void nv_ck804_thaw(struct ata_port *ap);
299 static int nv_adma_slave_config(struct scsi_device *sdev);
300 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
301 static enum ata_completion_errors nv_adma_qc_prep(struct ata_queued_cmd *qc);
302 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
303 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
304 static void nv_adma_irq_clear(struct ata_port *ap);
305 static int nv_adma_port_start(struct ata_port *ap);
306 static void nv_adma_port_stop(struct ata_port *ap);
308 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
309 static int nv_adma_port_resume(struct ata_port *ap);
311 static void nv_adma_freeze(struct ata_port *ap);
312 static void nv_adma_thaw(struct ata_port *ap);
313 static void nv_adma_error_handler(struct ata_port *ap);
314 static void nv_adma_host_stop(struct ata_host *host);
315 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
316 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
318 static void nv_mcp55_thaw(struct ata_port *ap);
319 static void nv_mcp55_freeze(struct ata_port *ap);
320 static void nv_swncq_error_handler(struct ata_port *ap);
321 static int nv_swncq_slave_config(struct scsi_device *sdev);
322 static int nv_swncq_port_start(struct ata_port *ap);
323 static enum ata_completion_errors nv_swncq_qc_prep(struct ata_queued_cmd *qc);
324 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc);
325 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc);
326 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis);
327 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance);
329 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg);
330 static int nv_swncq_port_resume(struct ata_port *ap);
337 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
344 static const struct pci_device_id nv_pci_tbl[] = {
345 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
346 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
347 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
348 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
349 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
350 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
351 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
352 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), MCP5x },
353 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), MCP5x },
354 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), MCP5x },
355 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), MCP5x },
356 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
357 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
358 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
360 { } /* terminate list */
363 static struct pci_driver nv_pci_driver = {
365 .id_table = nv_pci_tbl,
366 .probe = nv_init_one,
367 #ifdef CONFIG_PM_SLEEP
368 .suspend = ata_pci_device_suspend,
369 .resume = nv_pci_device_resume,
371 .remove = ata_pci_remove_one,
374 static const struct scsi_host_template nv_sht = {
375 ATA_BMDMA_SHT(DRV_NAME),
378 static const struct scsi_host_template nv_adma_sht = {
379 __ATA_BASE_SHT(DRV_NAME),
380 .can_queue = NV_ADMA_MAX_CPBS,
381 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
382 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
383 .slave_configure = nv_adma_slave_config,
384 .sdev_groups = ata_ncq_sdev_groups,
385 .change_queue_depth = ata_scsi_change_queue_depth,
386 .tag_alloc_policy = BLK_TAG_ALLOC_RR,
389 static const struct scsi_host_template nv_swncq_sht = {
390 __ATA_BASE_SHT(DRV_NAME),
391 .can_queue = ATA_MAX_QUEUE - 1,
392 .sg_tablesize = LIBATA_MAX_PRD,
393 .dma_boundary = ATA_DMA_BOUNDARY,
394 .slave_configure = nv_swncq_slave_config,
395 .sdev_groups = ata_ncq_sdev_groups,
396 .change_queue_depth = ata_scsi_change_queue_depth,
397 .tag_alloc_policy = BLK_TAG_ALLOC_RR,
401 * NV SATA controllers have various different problems with hardreset
402 * protocol depending on the specific controller and device.
406 * bko11195 reports that link doesn't come online after hardreset on
407 * generic nv's and there have been several other similar reports on
410 * bko12351#c23 reports that warmplug on MCP61 doesn't work with
415 * bko3352 reports nf2/3 controllers can't determine device signature
416 * reliably after hardreset. The following thread reports detection
417 * failure on cold boot with the standard debouncing timing.
419 * http://thread.gmane.org/gmane.linux.ide/34098
421 * bko12176 reports that hardreset fails to bring up the link during
426 * For initial probing after boot and hot plugging, hardreset mostly
427 * works fine on CK804 but curiously, reprobing on the initial port
428 * by rescanning or rmmod/insmod fails to acquire the initial D2H Reg
429 * FIS in somewhat undeterministic way.
433 * bko12351 reports that when SWNCQ is enabled, for hotplug to work,
434 * hardreset should be used and hardreset can't report proper
435 * signature, which suggests that mcp5x is closer to nf2 as long as
436 * reset quirkiness is concerned.
438 * bko12703 reports that boot probing fails for intel SSD with
439 * hardreset. Link fails to come online. Softreset works fine.
441 * The failures are varied but the following patterns seem true for
444 * - Softreset during boot always works.
446 * - Hardreset during boot sometimes fails to bring up the link on
447 * certain comibnations and device signature acquisition is
450 * - Hardreset is often necessary after hotplug.
452 * So, preferring softreset for boot probing and error handling (as
453 * hardreset might bring down the link) but using hardreset for
454 * post-boot probing should work around the above issues in most
455 * cases. Define nv_hardreset() which only kicks in for post-boot
456 * probing and use it for all variants.
458 static struct ata_port_operations nv_generic_ops = {
459 .inherits = &ata_bmdma_port_ops,
460 .lost_interrupt = ATA_OP_NULL,
461 .scr_read = nv_scr_read,
462 .scr_write = nv_scr_write,
463 .hardreset = nv_hardreset,
466 static struct ata_port_operations nv_nf2_ops = {
467 .inherits = &nv_generic_ops,
468 .freeze = nv_nf2_freeze,
472 static struct ata_port_operations nv_ck804_ops = {
473 .inherits = &nv_generic_ops,
474 .freeze = nv_ck804_freeze,
475 .thaw = nv_ck804_thaw,
476 .host_stop = nv_ck804_host_stop,
479 static struct ata_port_operations nv_adma_ops = {
480 .inherits = &nv_ck804_ops,
482 .check_atapi_dma = nv_adma_check_atapi_dma,
483 .sff_tf_read = nv_adma_tf_read,
484 .qc_defer = ata_std_qc_defer,
485 .qc_prep = nv_adma_qc_prep,
486 .qc_issue = nv_adma_qc_issue,
487 .sff_irq_clear = nv_adma_irq_clear,
489 .freeze = nv_adma_freeze,
490 .thaw = nv_adma_thaw,
491 .error_handler = nv_adma_error_handler,
492 .post_internal_cmd = nv_adma_post_internal_cmd,
494 .port_start = nv_adma_port_start,
495 .port_stop = nv_adma_port_stop,
497 .port_suspend = nv_adma_port_suspend,
498 .port_resume = nv_adma_port_resume,
500 .host_stop = nv_adma_host_stop,
503 static struct ata_port_operations nv_swncq_ops = {
504 .inherits = &nv_generic_ops,
506 .qc_defer = ata_std_qc_defer,
507 .qc_prep = nv_swncq_qc_prep,
508 .qc_issue = nv_swncq_qc_issue,
510 .freeze = nv_mcp55_freeze,
511 .thaw = nv_mcp55_thaw,
512 .error_handler = nv_swncq_error_handler,
515 .port_suspend = nv_swncq_port_suspend,
516 .port_resume = nv_swncq_port_resume,
518 .port_start = nv_swncq_port_start,
522 irq_handler_t irq_handler;
523 const struct scsi_host_template *sht;
526 #define NV_PI_PRIV(_irq_handler, _sht) \
527 &(struct nv_pi_priv){ .irq_handler = _irq_handler, .sht = _sht }
529 static const struct ata_port_info nv_port_info[] = {
532 .flags = ATA_FLAG_SATA,
533 .pio_mask = NV_PIO_MASK,
534 .mwdma_mask = NV_MWDMA_MASK,
535 .udma_mask = NV_UDMA_MASK,
536 .port_ops = &nv_generic_ops,
537 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
541 .flags = ATA_FLAG_SATA,
542 .pio_mask = NV_PIO_MASK,
543 .mwdma_mask = NV_MWDMA_MASK,
544 .udma_mask = NV_UDMA_MASK,
545 .port_ops = &nv_nf2_ops,
546 .private_data = NV_PI_PRIV(nv_nf2_interrupt, &nv_sht),
550 .flags = ATA_FLAG_SATA,
551 .pio_mask = NV_PIO_MASK,
552 .mwdma_mask = NV_MWDMA_MASK,
553 .udma_mask = NV_UDMA_MASK,
554 .port_ops = &nv_ck804_ops,
555 .private_data = NV_PI_PRIV(nv_ck804_interrupt, &nv_sht),
559 .flags = ATA_FLAG_SATA | ATA_FLAG_NCQ,
560 .pio_mask = NV_PIO_MASK,
561 .mwdma_mask = NV_MWDMA_MASK,
562 .udma_mask = NV_UDMA_MASK,
563 .port_ops = &nv_adma_ops,
564 .private_data = NV_PI_PRIV(nv_adma_interrupt, &nv_adma_sht),
568 .flags = ATA_FLAG_SATA,
569 .pio_mask = NV_PIO_MASK,
570 .mwdma_mask = NV_MWDMA_MASK,
571 .udma_mask = NV_UDMA_MASK,
572 .port_ops = &nv_generic_ops,
573 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
577 .flags = ATA_FLAG_SATA | ATA_FLAG_NCQ,
578 .pio_mask = NV_PIO_MASK,
579 .mwdma_mask = NV_MWDMA_MASK,
580 .udma_mask = NV_UDMA_MASK,
581 .port_ops = &nv_swncq_ops,
582 .private_data = NV_PI_PRIV(nv_swncq_interrupt, &nv_swncq_sht),
586 MODULE_AUTHOR("NVIDIA");
587 MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
588 MODULE_LICENSE("GPL");
589 MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
590 MODULE_VERSION(DRV_VERSION);
592 static bool adma_enabled;
593 static bool swncq_enabled = true;
594 static bool msi_enabled;
596 static void nv_adma_register_mode(struct ata_port *ap)
598 struct nv_adma_port_priv *pp = ap->private_data;
599 void __iomem *mmio = pp->ctl_block;
603 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
606 status = readw(mmio + NV_ADMA_STAT);
607 while (!(status & NV_ADMA_STAT_IDLE) && count < 20) {
609 status = readw(mmio + NV_ADMA_STAT);
613 ata_port_warn(ap, "timeout waiting for ADMA IDLE, stat=0x%hx\n",
616 tmp = readw(mmio + NV_ADMA_CTL);
617 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
620 status = readw(mmio + NV_ADMA_STAT);
621 while (!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
623 status = readw(mmio + NV_ADMA_STAT);
628 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
631 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
634 static void nv_adma_mode(struct ata_port *ap)
636 struct nv_adma_port_priv *pp = ap->private_data;
637 void __iomem *mmio = pp->ctl_block;
641 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
644 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
646 tmp = readw(mmio + NV_ADMA_CTL);
647 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
649 status = readw(mmio + NV_ADMA_STAT);
650 while (((status & NV_ADMA_STAT_LEGACY) ||
651 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
653 status = readw(mmio + NV_ADMA_STAT);
658 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
661 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
664 static int nv_adma_slave_config(struct scsi_device *sdev)
666 struct ata_port *ap = ata_shost_to_port(sdev->host);
667 struct nv_adma_port_priv *pp = ap->private_data;
668 struct nv_adma_port_priv *port0, *port1;
669 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
670 unsigned long segment_boundary, flags;
671 unsigned short sg_tablesize;
674 u32 current_reg, new_reg, config_mask;
676 rc = ata_scsi_slave_config(sdev);
678 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
679 /* Not a proper libata device, ignore */
682 spin_lock_irqsave(ap->lock, flags);
684 if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) {
686 * NVIDIA reports that ADMA mode does not support ATAPI commands.
687 * Therefore ATAPI commands are sent through the legacy interface.
688 * However, the legacy interface only supports 32-bit DMA.
689 * Restrict DMA parameters as required by the legacy interface
690 * when an ATAPI device is connected.
692 segment_boundary = ATA_DMA_BOUNDARY;
693 /* Subtract 1 since an extra entry may be needed for padding, see
695 sg_tablesize = LIBATA_MAX_PRD - 1;
697 /* Since the legacy DMA engine is in use, we need to disable ADMA
700 nv_adma_register_mode(ap);
702 segment_boundary = NV_ADMA_DMA_BOUNDARY;
703 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
707 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, ¤t_reg);
709 if (ap->port_no == 1)
710 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
711 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
713 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
714 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
717 new_reg = current_reg | config_mask;
718 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
720 new_reg = current_reg & ~config_mask;
721 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
724 if (current_reg != new_reg)
725 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
727 port0 = ap->host->ports[0]->private_data;
728 port1 = ap->host->ports[1]->private_data;
729 if ((port0->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
730 (port1->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)) {
732 * We have to set the DMA mask to 32-bit if either port is in
733 * ATAPI mode, since they are on the same PCI device which is
734 * used for DMA mapping. If either SCSI device is not allocated
735 * yet, it's OK since that port will discover its correct
736 * setting when it does get allocated.
738 rc = dma_set_mask(&pdev->dev, ATA_DMA_MASK);
740 rc = dma_set_mask(&pdev->dev, pp->adma_dma_mask);
743 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
744 blk_queue_max_segments(sdev->request_queue, sg_tablesize);
746 "DMA mask 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
747 (unsigned long long)*ap->host->dev->dma_mask,
748 segment_boundary, sg_tablesize);
750 spin_unlock_irqrestore(ap->lock, flags);
755 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
757 struct nv_adma_port_priv *pp = qc->ap->private_data;
758 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
761 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
763 /* Other than when internal or pass-through commands are executed,
764 the only time this function will be called in ADMA mode will be
765 if a command fails. In the failure case we don't care about going
766 into register mode with ADMA commands pending, as the commands will
767 all shortly be aborted anyway. We assume that NCQ commands are not
768 issued via passthrough, which is the only way that switching into
769 ADMA mode could abort outstanding commands. */
770 nv_adma_register_mode(ap);
772 ata_sff_tf_read(ap, tf);
775 static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
777 unsigned int idx = 0;
779 if (tf->flags & ATA_TFLAG_ISADDR) {
780 if (tf->flags & ATA_TFLAG_LBA48) {
781 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
782 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
783 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
784 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
785 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
786 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
788 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
790 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
791 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
792 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
793 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
796 if (tf->flags & ATA_TFLAG_DEVICE)
797 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
799 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
802 cpb[idx++] = cpu_to_le16(IGN);
807 static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
809 struct nv_adma_port_priv *pp = ap->private_data;
810 u8 flags = pp->cpb[cpb_num].resp_flags;
812 ata_port_dbg(ap, "CPB %d, flags=0x%x\n", cpb_num, flags);
814 if (unlikely((force_err ||
815 flags & (NV_CPB_RESP_ATA_ERR |
816 NV_CPB_RESP_CMD_ERR |
817 NV_CPB_RESP_CPB_ERR)))) {
818 struct ata_eh_info *ehi = &ap->link.eh_info;
821 ata_ehi_clear_desc(ehi);
822 __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags);
823 if (flags & NV_CPB_RESP_ATA_ERR) {
824 ata_ehi_push_desc(ehi, "ATA error");
825 ehi->err_mask |= AC_ERR_DEV;
826 } else if (flags & NV_CPB_RESP_CMD_ERR) {
827 ata_ehi_push_desc(ehi, "CMD error");
828 ehi->err_mask |= AC_ERR_DEV;
829 } else if (flags & NV_CPB_RESP_CPB_ERR) {
830 ata_ehi_push_desc(ehi, "CPB error");
831 ehi->err_mask |= AC_ERR_SYSTEM;
834 /* notifier error, but no error in CPB flags? */
835 ata_ehi_push_desc(ehi, "unknown");
836 ehi->err_mask |= AC_ERR_OTHER;
839 /* Kill all commands. EH will determine what actually failed. */
847 if (likely(flags & NV_CPB_RESP_DONE))
852 static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
854 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
856 /* freeze if hotplugged */
857 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
862 /* bail out if not our interrupt */
863 if (!(irq_stat & NV_INT_DEV))
866 /* DEV interrupt w/ no active qc? */
867 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
868 ata_sff_check_status(ap);
872 /* handle interrupt */
873 return ata_bmdma_port_intr(ap, qc);
876 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
878 struct ata_host *host = dev_instance;
880 u32 notifier_clears[2];
882 spin_lock(&host->lock);
884 for (i = 0; i < host->n_ports; i++) {
885 struct ata_port *ap = host->ports[i];
886 struct nv_adma_port_priv *pp = ap->private_data;
887 void __iomem *mmio = pp->ctl_block;
890 u32 notifier, notifier_error;
892 notifier_clears[i] = 0;
894 /* if ADMA is disabled, use standard ata interrupt handler */
895 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
896 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
897 >> (NV_INT_PORT_SHIFT * i);
898 handled += nv_host_intr(ap, irq_stat);
902 /* if in ATA register mode, check for standard interrupts */
903 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
904 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
905 >> (NV_INT_PORT_SHIFT * i);
906 if (ata_tag_valid(ap->link.active_tag))
907 /** NV_INT_DEV indication seems unreliable
908 at times at least in ADMA mode. Force it
909 on always when a command is active, to
910 prevent losing interrupts. */
911 irq_stat |= NV_INT_DEV;
912 handled += nv_host_intr(ap, irq_stat);
915 notifier = readl(mmio + NV_ADMA_NOTIFIER);
916 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
917 notifier_clears[i] = notifier | notifier_error;
919 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
921 if (!NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
926 status = readw(mmio + NV_ADMA_STAT);
929 * Clear status. Ensure the controller sees the
930 * clearing before we start looking at any of the CPB
931 * statuses, so that any CPB completions after this
932 * point in the handler will raise another interrupt.
934 writew(status, mmio + NV_ADMA_STAT);
935 readw(mmio + NV_ADMA_STAT); /* flush posted write */
938 handled++; /* irq handled if we got here */
940 /* freeze if hotplugged or controller error */
941 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
942 NV_ADMA_STAT_HOTUNPLUG |
943 NV_ADMA_STAT_TIMEOUT |
944 NV_ADMA_STAT_SERROR))) {
945 struct ata_eh_info *ehi = &ap->link.eh_info;
947 ata_ehi_clear_desc(ehi);
948 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status);
949 if (status & NV_ADMA_STAT_TIMEOUT) {
950 ehi->err_mask |= AC_ERR_SYSTEM;
951 ata_ehi_push_desc(ehi, "timeout");
952 } else if (status & NV_ADMA_STAT_HOTPLUG) {
953 ata_ehi_hotplugged(ehi);
954 ata_ehi_push_desc(ehi, "hotplug");
955 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
956 ata_ehi_hotplugged(ehi);
957 ata_ehi_push_desc(ehi, "hot unplug");
958 } else if (status & NV_ADMA_STAT_SERROR) {
959 /* let EH analyze SError and figure out cause */
960 ata_ehi_push_desc(ehi, "SError");
962 ata_ehi_push_desc(ehi, "unknown");
967 if (status & (NV_ADMA_STAT_DONE |
968 NV_ADMA_STAT_CPBERR |
969 NV_ADMA_STAT_CMD_COMPLETE)) {
970 u32 check_commands = notifier_clears[i];
974 if (status & NV_ADMA_STAT_CPBERR) {
975 /* check all active commands */
976 if (ata_tag_valid(ap->link.active_tag))
977 check_commands = 1 <<
980 check_commands = ap->link.sactive;
983 /* check CPBs for completed commands */
984 while ((pos = ffs(check_commands))) {
986 rc = nv_adma_check_cpb(ap, pos,
987 notifier_error & (1 << pos));
989 done_mask |= 1 << pos;
990 else if (unlikely(rc < 0))
992 check_commands &= ~(1 << pos);
994 ata_qc_complete_multiple(ap, ata_qc_get_active(ap) ^ done_mask);
998 if (notifier_clears[0] || notifier_clears[1]) {
999 /* Note: Both notifier clear registers must be written
1000 if either is set, even if one is zero, according to NVIDIA. */
1001 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
1002 writel(notifier_clears[0], pp->notifier_clear_block);
1003 pp = host->ports[1]->private_data;
1004 writel(notifier_clears[1], pp->notifier_clear_block);
1007 spin_unlock(&host->lock);
1009 return IRQ_RETVAL(handled);
1012 static void nv_adma_freeze(struct ata_port *ap)
1014 struct nv_adma_port_priv *pp = ap->private_data;
1015 void __iomem *mmio = pp->ctl_block;
1018 nv_ck804_freeze(ap);
1020 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1023 /* clear any outstanding CK804 notifications */
1024 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
1025 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1027 /* Disable interrupt */
1028 tmp = readw(mmio + NV_ADMA_CTL);
1029 writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
1030 mmio + NV_ADMA_CTL);
1031 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1034 static void nv_adma_thaw(struct ata_port *ap)
1036 struct nv_adma_port_priv *pp = ap->private_data;
1037 void __iomem *mmio = pp->ctl_block;
1042 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1045 /* Enable interrupt */
1046 tmp = readw(mmio + NV_ADMA_CTL);
1047 writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
1048 mmio + NV_ADMA_CTL);
1049 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1052 static void nv_adma_irq_clear(struct ata_port *ap)
1054 struct nv_adma_port_priv *pp = ap->private_data;
1055 void __iomem *mmio = pp->ctl_block;
1056 u32 notifier_clears[2];
1058 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
1059 ata_bmdma_irq_clear(ap);
1063 /* clear any outstanding CK804 notifications */
1064 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
1065 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1067 /* clear ADMA status */
1068 writew(0xffff, mmio + NV_ADMA_STAT);
1070 /* clear notifiers - note both ports need to be written with
1071 something even though we are only clearing on one */
1072 if (ap->port_no == 0) {
1073 notifier_clears[0] = 0xFFFFFFFF;
1074 notifier_clears[1] = 0;
1076 notifier_clears[0] = 0;
1077 notifier_clears[1] = 0xFFFFFFFF;
1079 pp = ap->host->ports[0]->private_data;
1080 writel(notifier_clears[0], pp->notifier_clear_block);
1081 pp = ap->host->ports[1]->private_data;
1082 writel(notifier_clears[1], pp->notifier_clear_block);
1085 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
1087 struct nv_adma_port_priv *pp = qc->ap->private_data;
1089 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
1090 ata_bmdma_post_internal_cmd(qc);
1093 static int nv_adma_port_start(struct ata_port *ap)
1095 struct device *dev = ap->host->dev;
1096 struct nv_adma_port_priv *pp;
1101 struct pci_dev *pdev = to_pci_dev(dev);
1105 * Ensure DMA mask is set to 32-bit before allocating legacy PRD and
1108 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1112 /* we might fallback to bmdma, allocate bmdma resources */
1113 rc = ata_bmdma_port_start(ap);
1117 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1121 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
1122 ap->port_no * NV_ADMA_PORT_SIZE;
1123 pp->ctl_block = mmio;
1124 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
1125 pp->notifier_clear_block = pp->gen_block +
1126 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1129 * Now that the legacy PRD and padding buffer are allocated we can
1130 * raise the DMA mask to allocate the CPB/APRD table.
1132 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
1134 pp->adma_dma_mask = *dev->dma_mask;
1136 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1137 &mem_dma, GFP_KERNEL);
1142 * First item in chunk of DMA memory:
1143 * 128-byte command parameter block (CPB)
1144 * one for each command tag
1147 pp->cpb_dma = mem_dma;
1149 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1150 writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1152 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1153 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1156 * Second item: block of ADMA_SGTBL_LEN s/g entries
1159 pp->aprd_dma = mem_dma;
1161 ap->private_data = pp;
1163 /* clear any outstanding interrupt conditions */
1164 writew(0xffff, mmio + NV_ADMA_STAT);
1166 /* initialize port variables */
1167 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1169 /* clear CPB fetch count */
1170 writew(0, mmio + NV_ADMA_CPB_COUNT);
1172 /* clear GO for register mode, enable interrupt */
1173 tmp = readw(mmio + NV_ADMA_CTL);
1174 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1175 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1177 tmp = readw(mmio + NV_ADMA_CTL);
1178 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1179 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1181 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1182 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1187 static void nv_adma_port_stop(struct ata_port *ap)
1189 struct nv_adma_port_priv *pp = ap->private_data;
1190 void __iomem *mmio = pp->ctl_block;
1192 writew(0, mmio + NV_ADMA_CTL);
1196 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1198 struct nv_adma_port_priv *pp = ap->private_data;
1199 void __iomem *mmio = pp->ctl_block;
1201 /* Go to register mode - clears GO */
1202 nv_adma_register_mode(ap);
1204 /* clear CPB fetch count */
1205 writew(0, mmio + NV_ADMA_CPB_COUNT);
1207 /* disable interrupt, shut down port */
1208 writew(0, mmio + NV_ADMA_CTL);
1213 static int nv_adma_port_resume(struct ata_port *ap)
1215 struct nv_adma_port_priv *pp = ap->private_data;
1216 void __iomem *mmio = pp->ctl_block;
1219 /* set CPB block location */
1220 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1221 writel((pp->cpb_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1223 /* clear any outstanding interrupt conditions */
1224 writew(0xffff, mmio + NV_ADMA_STAT);
1226 /* initialize port variables */
1227 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1229 /* clear CPB fetch count */
1230 writew(0, mmio + NV_ADMA_CPB_COUNT);
1232 /* clear GO for register mode, enable interrupt */
1233 tmp = readw(mmio + NV_ADMA_CTL);
1234 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1235 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1237 tmp = readw(mmio + NV_ADMA_CTL);
1238 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1239 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1241 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1242 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1248 static void nv_adma_setup_port(struct ata_port *ap)
1250 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1251 struct ata_ioports *ioport = &ap->ioaddr;
1253 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
1255 ioport->cmd_addr = mmio;
1256 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
1257 ioport->error_addr =
1258 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1259 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1260 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1261 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1262 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1263 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
1264 ioport->status_addr =
1265 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
1266 ioport->altstatus_addr =
1267 ioport->ctl_addr = mmio + 0x20;
1270 static int nv_adma_host_init(struct ata_host *host)
1272 struct pci_dev *pdev = to_pci_dev(host->dev);
1276 /* enable ADMA on the ports */
1277 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1278 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1279 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1280 NV_MCP_SATA_CFG_20_PORT1_EN |
1281 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1283 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1285 for (i = 0; i < host->n_ports; i++)
1286 nv_adma_setup_port(host->ports[i]);
1291 static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1292 struct scatterlist *sg,
1294 struct nv_adma_prd *aprd)
1297 if (qc->tf.flags & ATA_TFLAG_WRITE)
1298 flags |= NV_APRD_WRITE;
1299 if (idx == qc->n_elem - 1)
1300 flags |= NV_APRD_END;
1302 flags |= NV_APRD_CONT;
1304 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1305 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
1306 aprd->flags = flags;
1307 aprd->packet_len = 0;
1310 static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1312 struct nv_adma_port_priv *pp = qc->ap->private_data;
1313 struct nv_adma_prd *aprd;
1314 struct scatterlist *sg;
1317 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1318 aprd = (si < 5) ? &cpb->aprd[si] :
1319 &pp->aprd[NV_ADMA_SGTBL_LEN * qc->hw_tag + (si-5)];
1320 nv_adma_fill_aprd(qc, sg, si, aprd);
1323 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->hw_tag)));
1325 cpb->next_aprd = cpu_to_le64(0);
1328 static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1330 struct nv_adma_port_priv *pp = qc->ap->private_data;
1332 /* ADMA engine can only be used for non-ATAPI DMA commands,
1333 or interrupt-driven no-data commands. */
1334 if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
1335 (qc->tf.flags & ATA_TFLAG_POLLING))
1338 if ((qc->flags & ATA_QCFLAG_DMAMAP) ||
1339 (qc->tf.protocol == ATA_PROT_NODATA))
1345 static enum ata_completion_errors nv_adma_qc_prep(struct ata_queued_cmd *qc)
1347 struct nv_adma_port_priv *pp = qc->ap->private_data;
1348 struct nv_adma_cpb *cpb = &pp->cpb[qc->hw_tag];
1349 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
1352 if (nv_adma_use_reg_mode(qc)) {
1353 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1354 (qc->flags & ATA_QCFLAG_DMAMAP));
1355 nv_adma_register_mode(qc->ap);
1356 ata_bmdma_qc_prep(qc);
1360 cpb->resp_flags = NV_CPB_RESP_DONE;
1366 cpb->tag = qc->hw_tag;
1367 cpb->next_cpb_idx = 0;
1369 /* turn on NCQ flags for NCQ commands */
1370 if (qc->tf.protocol == ATA_PROT_NCQ)
1371 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1373 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1375 if (qc->flags & ATA_QCFLAG_DMAMAP) {
1376 nv_adma_fill_sg(qc, cpb);
1377 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1379 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
1381 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID
1382 until we are finished filling in all of the contents */
1384 cpb->ctl_flags = ctl_flags;
1386 cpb->resp_flags = 0;
1391 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1393 struct nv_adma_port_priv *pp = qc->ap->private_data;
1394 void __iomem *mmio = pp->ctl_block;
1395 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
1397 /* We can't handle result taskfile with NCQ commands, since
1398 retrieving the taskfile switches us out of ADMA mode and would abort
1399 existing commands. */
1400 if (unlikely(qc->tf.protocol == ATA_PROT_NCQ &&
1401 (qc->flags & ATA_QCFLAG_RESULT_TF))) {
1402 ata_dev_err(qc->dev, "NCQ w/ RESULT_TF not allowed\n");
1403 return AC_ERR_SYSTEM;
1406 if (nv_adma_use_reg_mode(qc)) {
1407 /* use ATA register mode */
1408 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1409 (qc->flags & ATA_QCFLAG_DMAMAP));
1410 nv_adma_register_mode(qc->ap);
1411 return ata_bmdma_qc_issue(qc);
1413 nv_adma_mode(qc->ap);
1415 /* write append register, command tag in lower 8 bits
1416 and (number of cpbs to append -1) in top 8 bits */
1419 if (curr_ncq != pp->last_issue_ncq) {
1420 /* Seems to need some delay before switching between NCQ and
1421 non-NCQ commands, else we get command timeouts and such. */
1423 pp->last_issue_ncq = curr_ncq;
1426 writew(qc->hw_tag, mmio + NV_ADMA_APPEND);
1431 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1433 struct ata_host *host = dev_instance;
1435 unsigned int handled = 0;
1436 unsigned long flags;
1438 spin_lock_irqsave(&host->lock, flags);
1440 for (i = 0; i < host->n_ports; i++) {
1441 struct ata_port *ap = host->ports[i];
1442 struct ata_queued_cmd *qc;
1444 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1445 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
1446 handled += ata_bmdma_port_intr(ap, qc);
1449 * No request pending? Clear interrupt status
1450 * anyway, in case there's one pending.
1452 ap->ops->sff_check_status(ap);
1456 spin_unlock_irqrestore(&host->lock, flags);
1458 return IRQ_RETVAL(handled);
1461 static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
1465 for (i = 0; i < host->n_ports; i++) {
1466 handled += nv_host_intr(host->ports[i], irq_stat);
1467 irq_stat >>= NV_INT_PORT_SHIFT;
1470 return IRQ_RETVAL(handled);
1473 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
1475 struct ata_host *host = dev_instance;
1479 spin_lock(&host->lock);
1480 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
1481 ret = nv_do_interrupt(host, irq_stat);
1482 spin_unlock(&host->lock);
1487 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
1489 struct ata_host *host = dev_instance;
1493 spin_lock(&host->lock);
1494 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1495 ret = nv_do_interrupt(host, irq_stat);
1496 spin_unlock(&host->lock);
1501 static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
1503 if (sc_reg > SCR_CONTROL)
1506 *val = ioread32(link->ap->ioaddr.scr_addr + (sc_reg * 4));
1510 static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
1512 if (sc_reg > SCR_CONTROL)
1515 iowrite32(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
1519 static int nv_hardreset(struct ata_link *link, unsigned int *class,
1520 unsigned long deadline)
1522 struct ata_eh_context *ehc = &link->eh_context;
1524 /* Do hardreset iff it's post-boot probing, please read the
1525 * comment above port ops for details.
1527 if (!(link->ap->pflags & ATA_PFLAG_LOADING) &&
1528 !ata_dev_enabled(link->device))
1529 sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
1532 const unsigned int *timing = sata_ehc_deb_timing(ehc);
1535 if (!(ehc->i.flags & ATA_EHI_QUIET))
1537 "nv: skipping hardreset on occupied port\n");
1539 /* make sure the link is online */
1540 rc = sata_link_resume(link, timing, deadline);
1541 /* whine about phy resume failure but proceed */
1542 if (rc && rc != -EOPNOTSUPP)
1543 ata_link_warn(link, "failed to resume link (errno=%d)\n",
1547 /* device signature acquisition is unreliable */
1551 static void nv_nf2_freeze(struct ata_port *ap)
1553 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1554 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1557 mask = ioread8(scr_addr + NV_INT_ENABLE);
1558 mask &= ~(NV_INT_ALL << shift);
1559 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1562 static void nv_nf2_thaw(struct ata_port *ap)
1564 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1565 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1568 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
1570 mask = ioread8(scr_addr + NV_INT_ENABLE);
1571 mask |= (NV_INT_MASK << shift);
1572 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1575 static void nv_ck804_freeze(struct ata_port *ap)
1577 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1578 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1581 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1582 mask &= ~(NV_INT_ALL << shift);
1583 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1586 static void nv_ck804_thaw(struct ata_port *ap)
1588 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1589 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1592 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1594 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1595 mask |= (NV_INT_MASK << shift);
1596 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1599 static void nv_mcp55_freeze(struct ata_port *ap)
1601 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1602 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1605 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1607 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1608 mask &= ~(NV_INT_ALL_MCP55 << shift);
1609 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1612 static void nv_mcp55_thaw(struct ata_port *ap)
1614 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1615 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1618 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1620 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1621 mask |= (NV_INT_MASK_MCP55 << shift);
1622 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1625 static void nv_adma_error_handler(struct ata_port *ap)
1627 struct nv_adma_port_priv *pp = ap->private_data;
1628 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
1629 void __iomem *mmio = pp->ctl_block;
1633 if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
1634 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1635 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1636 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1637 u32 status = readw(mmio + NV_ADMA_STAT);
1638 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1639 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
1642 "EH in ADMA mode, notifier 0x%X "
1643 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1644 "next cpb count 0x%X next cpb idx 0x%x\n",
1645 notifier, notifier_error, gen_ctl, status,
1646 cpb_count, next_cpb_idx);
1648 for (i = 0; i < NV_ADMA_MAX_CPBS; i++) {
1649 struct nv_adma_cpb *cpb = &pp->cpb[i];
1650 if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
1651 ap->link.sactive & (1 << i))
1653 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1654 i, cpb->ctl_flags, cpb->resp_flags);
1658 /* Push us back into port register mode for error handling. */
1659 nv_adma_register_mode(ap);
1661 /* Mark all of the CPBs as invalid to prevent them from
1663 for (i = 0; i < NV_ADMA_MAX_CPBS; i++)
1664 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1666 /* clear CPB fetch count */
1667 writew(0, mmio + NV_ADMA_CPB_COUNT);
1670 tmp = readw(mmio + NV_ADMA_CTL);
1671 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1672 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1674 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1675 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1678 ata_bmdma_error_handler(ap);
1681 static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc)
1683 struct nv_swncq_port_priv *pp = ap->private_data;
1684 struct defer_queue *dq = &pp->defer_queue;
1687 WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE);
1688 dq->defer_bits |= (1 << qc->hw_tag);
1689 dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->hw_tag;
1692 static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap)
1694 struct nv_swncq_port_priv *pp = ap->private_data;
1695 struct defer_queue *dq = &pp->defer_queue;
1698 if (dq->head == dq->tail) /* null queue */
1701 tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)];
1702 dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON;
1703 WARN_ON(!(dq->defer_bits & (1 << tag)));
1704 dq->defer_bits &= ~(1 << tag);
1706 return ata_qc_from_tag(ap, tag);
1709 static void nv_swncq_fis_reinit(struct ata_port *ap)
1711 struct nv_swncq_port_priv *pp = ap->private_data;
1714 pp->dmafis_bits = 0;
1715 pp->sdbfis_bits = 0;
1719 static void nv_swncq_pp_reinit(struct ata_port *ap)
1721 struct nv_swncq_port_priv *pp = ap->private_data;
1722 struct defer_queue *dq = &pp->defer_queue;
1728 pp->last_issue_tag = ATA_TAG_POISON;
1729 nv_swncq_fis_reinit(ap);
1732 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis)
1734 struct nv_swncq_port_priv *pp = ap->private_data;
1736 writew(fis, pp->irq_block);
1739 static void __ata_bmdma_stop(struct ata_port *ap)
1741 struct ata_queued_cmd qc;
1744 ata_bmdma_stop(&qc);
1747 static void nv_swncq_ncq_stop(struct ata_port *ap)
1749 struct nv_swncq_port_priv *pp = ap->private_data;
1754 ata_port_err(ap, "EH in SWNCQ mode,QC:qc_active 0x%llX sactive 0x%X\n",
1755 ap->qc_active, ap->link.sactive);
1757 "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n "
1758 "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n",
1759 pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag,
1760 pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits);
1762 ata_port_err(ap, "ATA_REG 0x%X ERR_REG 0x%X\n",
1763 ap->ops->sff_check_status(ap),
1764 ioread8(ap->ioaddr.error_addr));
1766 sactive = readl(pp->sactive_block);
1767 done_mask = pp->qc_active ^ sactive;
1769 ata_port_err(ap, "tag : dhfis dmafis sdbfis sactive\n");
1770 for (i = 0; i < ATA_MAX_QUEUE; i++) {
1772 if (pp->qc_active & (1 << i))
1774 else if (done_mask & (1 << i))
1780 "tag 0x%x: %01x %01x %01x %01x %s\n", i,
1781 (pp->dhfis_bits >> i) & 0x1,
1782 (pp->dmafis_bits >> i) & 0x1,
1783 (pp->sdbfis_bits >> i) & 0x1,
1784 (sactive >> i) & 0x1,
1785 (err ? "error! tag doesn't exit" : " "));
1788 nv_swncq_pp_reinit(ap);
1789 ap->ops->sff_irq_clear(ap);
1790 __ata_bmdma_stop(ap);
1791 nv_swncq_irq_clear(ap, 0xffff);
1794 static void nv_swncq_error_handler(struct ata_port *ap)
1796 struct ata_eh_context *ehc = &ap->link.eh_context;
1798 if (ap->link.sactive) {
1799 nv_swncq_ncq_stop(ap);
1800 ehc->i.action |= ATA_EH_RESET;
1803 ata_bmdma_error_handler(ap);
1807 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg)
1809 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1813 writel(~0, mmio + NV_INT_STATUS_MCP55);
1816 writel(0, mmio + NV_INT_ENABLE_MCP55);
1819 tmp = readl(mmio + NV_CTL_MCP55);
1820 tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ);
1821 writel(tmp, mmio + NV_CTL_MCP55);
1826 static int nv_swncq_port_resume(struct ata_port *ap)
1828 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1832 writel(~0, mmio + NV_INT_STATUS_MCP55);
1835 writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1838 tmp = readl(mmio + NV_CTL_MCP55);
1839 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1845 static void nv_swncq_host_init(struct ata_host *host)
1848 void __iomem *mmio = host->iomap[NV_MMIO_BAR];
1849 struct pci_dev *pdev = to_pci_dev(host->dev);
1852 /* disable ECO 398 */
1853 pci_read_config_byte(pdev, 0x7f, ®val);
1854 regval &= ~(1 << 7);
1855 pci_write_config_byte(pdev, 0x7f, regval);
1858 tmp = readl(mmio + NV_CTL_MCP55);
1859 dev_dbg(&pdev->dev, "HOST_CTL:0x%X\n", tmp);
1860 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1862 /* enable irq intr */
1863 tmp = readl(mmio + NV_INT_ENABLE_MCP55);
1864 dev_dbg(&pdev->dev, "HOST_ENABLE:0x%X\n", tmp);
1865 writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1867 /* clear port irq */
1868 writel(~0x0, mmio + NV_INT_STATUS_MCP55);
1871 static int nv_swncq_slave_config(struct scsi_device *sdev)
1873 struct ata_port *ap = ata_shost_to_port(sdev->host);
1874 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
1875 struct ata_device *dev;
1878 u8 check_maxtor = 0;
1879 unsigned char model_num[ATA_ID_PROD_LEN + 1];
1881 rc = ata_scsi_slave_config(sdev);
1882 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
1883 /* Not a proper libata device, ignore */
1886 dev = &ap->link.device[sdev->id];
1887 if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI)
1890 /* if MCP51 and Maxtor, then disable ncq */
1891 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA ||
1892 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2)
1895 /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */
1896 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA ||
1897 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) {
1898 pci_read_config_byte(pdev, 0x8, &rev);
1906 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
1908 if (strncmp(model_num, "Maxtor", 6) == 0) {
1909 ata_scsi_change_queue_depth(sdev, 1);
1910 ata_dev_notice(dev, "Disabling SWNCQ mode (depth %x)\n",
1917 static int nv_swncq_port_start(struct ata_port *ap)
1919 struct device *dev = ap->host->dev;
1920 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1921 struct nv_swncq_port_priv *pp;
1924 /* we might fallback to bmdma, allocate bmdma resources */
1925 rc = ata_bmdma_port_start(ap);
1929 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1933 pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE,
1934 &pp->prd_dma, GFP_KERNEL);
1938 ap->private_data = pp;
1939 pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE;
1940 pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2;
1941 pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2;
1946 static enum ata_completion_errors nv_swncq_qc_prep(struct ata_queued_cmd *qc)
1948 if (qc->tf.protocol != ATA_PROT_NCQ) {
1949 ata_bmdma_qc_prep(qc);
1953 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1956 nv_swncq_fill_sg(qc);
1961 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
1963 struct ata_port *ap = qc->ap;
1964 struct scatterlist *sg;
1965 struct nv_swncq_port_priv *pp = ap->private_data;
1966 struct ata_bmdma_prd *prd;
1967 unsigned int si, idx;
1969 prd = pp->prd + ATA_MAX_PRD * qc->hw_tag;
1972 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1976 addr = (u32)sg_dma_address(sg);
1977 sg_len = sg_dma_len(sg);
1980 offset = addr & 0xffff;
1982 if ((offset + sg_len) > 0x10000)
1983 len = 0x10000 - offset;
1985 prd[idx].addr = cpu_to_le32(addr);
1986 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
1994 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
1997 static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap,
1998 struct ata_queued_cmd *qc)
2000 struct nv_swncq_port_priv *pp = ap->private_data;
2005 writel((1 << qc->hw_tag), pp->sactive_block);
2006 pp->last_issue_tag = qc->hw_tag;
2007 pp->dhfis_bits &= ~(1 << qc->hw_tag);
2008 pp->dmafis_bits &= ~(1 << qc->hw_tag);
2009 pp->qc_active |= (0x1 << qc->hw_tag);
2011 trace_ata_tf_load(ap, &qc->tf);
2012 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */
2013 trace_ata_exec_command(ap, &qc->tf, qc->hw_tag);
2014 ap->ops->sff_exec_command(ap, &qc->tf);
2019 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc)
2021 struct ata_port *ap = qc->ap;
2022 struct nv_swncq_port_priv *pp = ap->private_data;
2024 if (qc->tf.protocol != ATA_PROT_NCQ)
2025 return ata_bmdma_qc_issue(qc);
2028 nv_swncq_issue_atacmd(ap, qc);
2030 nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */
2035 static void nv_swncq_hotplug(struct ata_port *ap, u32 fis)
2038 struct ata_eh_info *ehi = &ap->link.eh_info;
2040 ata_ehi_clear_desc(ehi);
2042 /* AHCI needs SError cleared; otherwise, it might lock up */
2043 sata_scr_read(&ap->link, SCR_ERROR, &serror);
2044 sata_scr_write(&ap->link, SCR_ERROR, serror);
2046 /* analyze @irq_stat */
2047 if (fis & NV_SWNCQ_IRQ_ADDED)
2048 ata_ehi_push_desc(ehi, "hot plug");
2049 else if (fis & NV_SWNCQ_IRQ_REMOVED)
2050 ata_ehi_push_desc(ehi, "hot unplug");
2052 ata_ehi_hotplugged(ehi);
2054 /* okay, let's hand over to EH */
2055 ehi->serror |= serror;
2057 ata_port_freeze(ap);
2060 static int nv_swncq_sdbfis(struct ata_port *ap)
2062 struct ata_queued_cmd *qc;
2063 struct nv_swncq_port_priv *pp = ap->private_data;
2064 struct ata_eh_info *ehi = &ap->link.eh_info;
2070 host_stat = ap->ops->bmdma_status(ap);
2071 trace_ata_bmdma_status(ap, host_stat);
2072 if (unlikely(host_stat & ATA_DMA_ERR)) {
2073 /* error when transferring data to/from memory */
2074 ata_ehi_clear_desc(ehi);
2075 ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
2076 ehi->err_mask |= AC_ERR_HOST_BUS;
2077 ehi->action |= ATA_EH_RESET;
2081 ap->ops->sff_irq_clear(ap);
2082 __ata_bmdma_stop(ap);
2084 sactive = readl(pp->sactive_block);
2085 done_mask = pp->qc_active ^ sactive;
2087 pp->qc_active &= ~done_mask;
2088 pp->dhfis_bits &= ~done_mask;
2089 pp->dmafis_bits &= ~done_mask;
2090 pp->sdbfis_bits |= done_mask;
2091 ata_qc_complete_multiple(ap, ata_qc_get_active(ap) ^ done_mask);
2093 if (!ap->qc_active) {
2094 ata_port_dbg(ap, "over\n");
2095 nv_swncq_pp_reinit(ap);
2099 if (pp->qc_active & pp->dhfis_bits)
2102 if ((pp->ncq_flags & ncq_saw_backout) ||
2103 (pp->qc_active ^ pp->dhfis_bits))
2104 /* if the controller can't get a device to host register FIS,
2105 * The driver needs to reissue the new command.
2109 ata_port_dbg(ap, "QC: qc_active 0x%llx,"
2110 "SWNCQ:qc_active 0x%X defer_bits %X "
2111 "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n",
2112 ap->qc_active, pp->qc_active,
2113 pp->defer_queue.defer_bits, pp->dhfis_bits,
2114 pp->dmafis_bits, pp->last_issue_tag);
2116 nv_swncq_fis_reinit(ap);
2119 qc = ata_qc_from_tag(ap, pp->last_issue_tag);
2120 nv_swncq_issue_atacmd(ap, qc);
2124 if (pp->defer_queue.defer_bits) {
2125 /* send deferral queue command */
2126 qc = nv_swncq_qc_from_dq(ap);
2127 WARN_ON(qc == NULL);
2128 nv_swncq_issue_atacmd(ap, qc);
2134 static inline u32 nv_swncq_tag(struct ata_port *ap)
2136 struct nv_swncq_port_priv *pp = ap->private_data;
2139 tag = readb(pp->tag_block) >> 2;
2140 return (tag & 0x1f);
2143 static void nv_swncq_dmafis(struct ata_port *ap)
2145 struct ata_queued_cmd *qc;
2149 struct nv_swncq_port_priv *pp = ap->private_data;
2151 __ata_bmdma_stop(ap);
2152 tag = nv_swncq_tag(ap);
2154 ata_port_dbg(ap, "dma setup tag 0x%x\n", tag);
2155 qc = ata_qc_from_tag(ap, tag);
2160 rw = qc->tf.flags & ATA_TFLAG_WRITE;
2162 /* load PRD table addr. */
2163 iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->hw_tag,
2164 ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
2166 /* specify data direction, triple-check start bit is clear */
2167 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2168 dmactl &= ~ATA_DMA_WR;
2170 dmactl |= ATA_DMA_WR;
2172 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2175 static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
2177 struct nv_swncq_port_priv *pp = ap->private_data;
2178 struct ata_queued_cmd *qc;
2179 struct ata_eh_info *ehi = &ap->link.eh_info;
2183 ata_stat = ap->ops->sff_check_status(ap);
2184 nv_swncq_irq_clear(ap, fis);
2188 if (ata_port_is_frozen(ap))
2191 if (fis & NV_SWNCQ_IRQ_HOTPLUG) {
2192 nv_swncq_hotplug(ap, fis);
2199 if (ap->ops->scr_read(&ap->link, SCR_ERROR, &serror))
2201 ap->ops->scr_write(&ap->link, SCR_ERROR, serror);
2203 if (ata_stat & ATA_ERR) {
2204 ata_ehi_clear_desc(ehi);
2205 ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis);
2206 ehi->err_mask |= AC_ERR_DEV;
2207 ehi->serror |= serror;
2208 ehi->action |= ATA_EH_RESET;
2209 ata_port_freeze(ap);
2213 if (fis & NV_SWNCQ_IRQ_BACKOUT) {
2214 /* If the IRQ is backout, driver must issue
2215 * the new command again some time later.
2217 pp->ncq_flags |= ncq_saw_backout;
2220 if (fis & NV_SWNCQ_IRQ_SDBFIS) {
2221 pp->ncq_flags |= ncq_saw_sdb;
2222 ata_port_dbg(ap, "SWNCQ: qc_active 0x%X "
2223 "dhfis 0x%X dmafis 0x%X sactive 0x%X\n",
2224 pp->qc_active, pp->dhfis_bits,
2225 pp->dmafis_bits, readl(pp->sactive_block));
2226 if (nv_swncq_sdbfis(ap) < 0)
2230 if (fis & NV_SWNCQ_IRQ_DHREGFIS) {
2231 /* The interrupt indicates the new command
2232 * was transmitted correctly to the drive.
2234 pp->dhfis_bits |= (0x1 << pp->last_issue_tag);
2235 pp->ncq_flags |= ncq_saw_d2h;
2236 if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) {
2237 ata_ehi_push_desc(ehi, "illegal fis transaction");
2238 ehi->err_mask |= AC_ERR_HSM;
2239 ehi->action |= ATA_EH_RESET;
2243 if (!(fis & NV_SWNCQ_IRQ_DMASETUP) &&
2244 !(pp->ncq_flags & ncq_saw_dmas)) {
2245 ata_stat = ap->ops->sff_check_status(ap);
2246 if (ata_stat & ATA_BUSY)
2249 if (pp->defer_queue.defer_bits) {
2250 ata_port_dbg(ap, "send next command\n");
2251 qc = nv_swncq_qc_from_dq(ap);
2252 nv_swncq_issue_atacmd(ap, qc);
2257 if (fis & NV_SWNCQ_IRQ_DMASETUP) {
2258 /* program the dma controller with appropriate PRD buffers
2259 * and start the DMA transfer for requested command.
2261 pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap));
2262 pp->ncq_flags |= ncq_saw_dmas;
2263 nv_swncq_dmafis(ap);
2269 ata_ehi_push_desc(ehi, "fis:0x%x", fis);
2270 ata_port_freeze(ap);
2274 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance)
2276 struct ata_host *host = dev_instance;
2278 unsigned int handled = 0;
2279 unsigned long flags;
2282 spin_lock_irqsave(&host->lock, flags);
2284 irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55);
2286 for (i = 0; i < host->n_ports; i++) {
2287 struct ata_port *ap = host->ports[i];
2289 if (ap->link.sactive) {
2290 nv_swncq_host_interrupt(ap, (u16)irq_stat);
2293 if (irq_stat) /* reserve Hotplug */
2294 nv_swncq_irq_clear(ap, 0xfff0);
2296 handled += nv_host_intr(ap, (u8)irq_stat);
2298 irq_stat >>= NV_INT_PORT_SHIFT_MCP55;
2301 spin_unlock_irqrestore(&host->lock, flags);
2303 return IRQ_RETVAL(handled);
2306 static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2308 const struct ata_port_info *ppi[] = { NULL, NULL };
2309 struct nv_pi_priv *ipriv;
2310 struct ata_host *host;
2311 struct nv_host_priv *hpriv;
2315 unsigned long type = ent->driver_data;
2317 // Make sure this is a SATA controller by counting the number of bars
2318 // (NVIDIA SATA controllers will always have six bars). Otherwise,
2319 // it's an IDE controller and we ignore it.
2320 for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
2321 if (pci_resource_start(pdev, bar) == 0)
2324 ata_print_version_once(&pdev->dev, DRV_VERSION);
2326 rc = pcim_enable_device(pdev);
2330 /* determine type and allocate host */
2331 if (type == CK804 && adma_enabled) {
2332 dev_notice(&pdev->dev, "Using ADMA mode\n");
2334 } else if (type == MCP5x && swncq_enabled) {
2335 dev_notice(&pdev->dev, "Using SWNCQ mode\n");
2339 ppi[0] = &nv_port_info[type];
2340 ipriv = ppi[0]->private_data;
2341 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
2345 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
2349 host->private_data = hpriv;
2351 /* request and iomap NV_MMIO_BAR */
2352 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
2356 /* configure SCR access */
2357 base = host->iomap[NV_MMIO_BAR];
2358 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
2359 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
2361 /* enable SATA space for CK804 */
2362 if (type >= CK804) {
2365 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2366 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2367 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2372 rc = nv_adma_host_init(host);
2375 } else if (type == SWNCQ)
2376 nv_swncq_host_init(host);
2379 dev_notice(&pdev->dev, "Using MSI\n");
2380 pci_enable_msi(pdev);
2383 pci_set_master(pdev);
2384 return ata_pci_sff_activate_host(host, ipriv->irq_handler, ipriv->sht);
2387 #ifdef CONFIG_PM_SLEEP
2388 static int nv_pci_device_resume(struct pci_dev *pdev)
2390 struct ata_host *host = pci_get_drvdata(pdev);
2391 struct nv_host_priv *hpriv = host->private_data;
2394 rc = ata_pci_device_do_resume(pdev);
2398 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2399 if (hpriv->type >= CK804) {
2402 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2403 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2404 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2406 if (hpriv->type == ADMA) {
2408 struct nv_adma_port_priv *pp;
2409 /* enable/disable ADMA on the ports appropriately */
2410 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2412 pp = host->ports[0]->private_data;
2413 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2414 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2415 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2417 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
2418 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2419 pp = host->ports[1]->private_data;
2420 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2421 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
2422 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2424 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
2425 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2427 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2431 ata_host_resume(host);
2437 static void nv_ck804_host_stop(struct ata_host *host)
2439 struct pci_dev *pdev = to_pci_dev(host->dev);
2442 /* disable SATA space for CK804 */
2443 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2444 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2445 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2448 static void nv_adma_host_stop(struct ata_host *host)
2450 struct pci_dev *pdev = to_pci_dev(host->dev);
2453 /* disable ADMA on the ports */
2454 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2455 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2456 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
2457 NV_MCP_SATA_CFG_20_PORT1_EN |
2458 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2460 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2462 nv_ck804_host_stop(host);
2465 module_pci_driver(nv_pci_driver);
2467 module_param_named(adma, adma_enabled, bool, 0444);
2468 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: false)");
2469 module_param_named(swncq, swncq_enabled, bool, 0444);
2470 MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");
2471 module_param_named(msi, msi_enabled, bool, 0444);
2472 MODULE_PARM_DESC(msi, "Enable use of MSI (Default: false)");