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>
35 #define DRV_NAME "sata_nv"
36 #define DRV_VERSION "3.5"
38 #define NV_ADMA_DMA_BOUNDARY 0xffffffffUL
44 NV_PIO_MASK = ATA_PIO4,
45 NV_MWDMA_MASK = ATA_MWDMA2,
46 NV_UDMA_MASK = ATA_UDMA6,
47 NV_PORT0_SCR_REG_OFFSET = 0x00,
48 NV_PORT1_SCR_REG_OFFSET = 0x40,
50 /* INT_STATUS/ENABLE */
53 NV_INT_STATUS_CK804 = 0x440,
54 NV_INT_ENABLE_CK804 = 0x441,
56 /* INT_STATUS/ENABLE bits */
60 NV_INT_REMOVED = 0x08,
62 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
65 NV_INT_MASK = NV_INT_DEV |
66 NV_INT_ADDED | NV_INT_REMOVED,
70 NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI
72 // For PCI config register 20
73 NV_MCP_SATA_CFG_20 = 0x50,
74 NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04,
75 NV_MCP_SATA_CFG_20_PORT0_EN = (1 << 17),
76 NV_MCP_SATA_CFG_20_PORT1_EN = (1 << 16),
77 NV_MCP_SATA_CFG_20_PORT0_PWB_EN = (1 << 14),
78 NV_MCP_SATA_CFG_20_PORT1_PWB_EN = (1 << 12),
80 NV_ADMA_MAX_CPBS = 32,
83 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
85 NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5,
86 NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ,
87 NV_ADMA_PORT_PRIV_DMA_SZ = NV_ADMA_MAX_CPBS *
88 (NV_ADMA_CPB_SZ + NV_ADMA_SGTBL_SZ),
90 /* BAR5 offset to ADMA general registers */
92 NV_ADMA_GEN_CTL = 0x00,
93 NV_ADMA_NOTIFIER_CLEAR = 0x30,
95 /* BAR5 offset to ADMA ports */
98 /* size of ADMA port register space */
99 NV_ADMA_PORT_SIZE = 0x100,
101 /* ADMA port registers */
103 NV_ADMA_CPB_COUNT = 0x42,
104 NV_ADMA_NEXT_CPB_IDX = 0x43,
106 NV_ADMA_CPB_BASE_LOW = 0x48,
107 NV_ADMA_CPB_BASE_HIGH = 0x4C,
108 NV_ADMA_APPEND = 0x50,
109 NV_ADMA_NOTIFIER = 0x68,
110 NV_ADMA_NOTIFIER_ERROR = 0x6C,
112 /* NV_ADMA_CTL register bits */
113 NV_ADMA_CTL_HOTPLUG_IEN = (1 << 0),
114 NV_ADMA_CTL_CHANNEL_RESET = (1 << 5),
115 NV_ADMA_CTL_GO = (1 << 7),
116 NV_ADMA_CTL_AIEN = (1 << 8),
117 NV_ADMA_CTL_READ_NON_COHERENT = (1 << 11),
118 NV_ADMA_CTL_WRITE_NON_COHERENT = (1 << 12),
120 /* CPB response flag bits */
121 NV_CPB_RESP_DONE = (1 << 0),
122 NV_CPB_RESP_ATA_ERR = (1 << 3),
123 NV_CPB_RESP_CMD_ERR = (1 << 4),
124 NV_CPB_RESP_CPB_ERR = (1 << 7),
126 /* CPB control flag bits */
127 NV_CPB_CTL_CPB_VALID = (1 << 0),
128 NV_CPB_CTL_QUEUE = (1 << 1),
129 NV_CPB_CTL_APRD_VALID = (1 << 2),
130 NV_CPB_CTL_IEN = (1 << 3),
131 NV_CPB_CTL_FPDMA = (1 << 4),
134 NV_APRD_WRITE = (1 << 1),
135 NV_APRD_END = (1 << 2),
136 NV_APRD_CONT = (1 << 3),
138 /* NV_ADMA_STAT flags */
139 NV_ADMA_STAT_TIMEOUT = (1 << 0),
140 NV_ADMA_STAT_HOTUNPLUG = (1 << 1),
141 NV_ADMA_STAT_HOTPLUG = (1 << 2),
142 NV_ADMA_STAT_CPBERR = (1 << 4),
143 NV_ADMA_STAT_SERROR = (1 << 5),
144 NV_ADMA_STAT_CMD_COMPLETE = (1 << 6),
145 NV_ADMA_STAT_IDLE = (1 << 8),
146 NV_ADMA_STAT_LEGACY = (1 << 9),
147 NV_ADMA_STAT_STOPPED = (1 << 10),
148 NV_ADMA_STAT_DONE = (1 << 12),
149 NV_ADMA_STAT_ERR = NV_ADMA_STAT_CPBERR |
150 NV_ADMA_STAT_TIMEOUT,
153 NV_ADMA_PORT_REGISTER_MODE = (1 << 0),
154 NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1),
156 /* MCP55 reg offset */
157 NV_CTL_MCP55 = 0x400,
158 NV_INT_STATUS_MCP55 = 0x440,
159 NV_INT_ENABLE_MCP55 = 0x444,
160 NV_NCQ_REG_MCP55 = 0x448,
163 NV_INT_ALL_MCP55 = 0xffff,
164 NV_INT_PORT_SHIFT_MCP55 = 16, /* each port occupies 16 bits */
165 NV_INT_MASK_MCP55 = NV_INT_ALL_MCP55 & 0xfffd,
167 /* SWNCQ ENABLE BITS*/
168 NV_CTL_PRI_SWNCQ = 0x02,
169 NV_CTL_SEC_SWNCQ = 0x04,
171 /* SW NCQ status bits*/
172 NV_SWNCQ_IRQ_DEV = (1 << 0),
173 NV_SWNCQ_IRQ_PM = (1 << 1),
174 NV_SWNCQ_IRQ_ADDED = (1 << 2),
175 NV_SWNCQ_IRQ_REMOVED = (1 << 3),
177 NV_SWNCQ_IRQ_BACKOUT = (1 << 4),
178 NV_SWNCQ_IRQ_SDBFIS = (1 << 5),
179 NV_SWNCQ_IRQ_DHREGFIS = (1 << 6),
180 NV_SWNCQ_IRQ_DMASETUP = (1 << 7),
182 NV_SWNCQ_IRQ_HOTPLUG = NV_SWNCQ_IRQ_ADDED |
183 NV_SWNCQ_IRQ_REMOVED,
187 /* ADMA Physical Region Descriptor - one SG segment */
196 enum nv_adma_regbits {
197 CMDEND = (1 << 15), /* end of command list */
198 WNB = (1 << 14), /* wait-not-BSY */
199 IGN = (1 << 13), /* ignore this entry */
200 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
201 DA2 = (1 << (2 + 8)),
202 DA1 = (1 << (1 + 8)),
203 DA0 = (1 << (0 + 8)),
206 /* ADMA Command Parameter Block
207 The first 5 SG segments are stored inside the Command Parameter Block itself.
208 If there are more than 5 segments the remainder are stored in a separate
209 memory area indicated by next_aprd. */
211 u8 resp_flags; /* 0 */
212 u8 reserved1; /* 1 */
213 u8 ctl_flags; /* 2 */
214 /* len is length of taskfile in 64 bit words */
217 u8 next_cpb_idx; /* 5 */
218 __le16 reserved2; /* 6-7 */
219 __le16 tf[12]; /* 8-31 */
220 struct nv_adma_prd aprd[5]; /* 32-111 */
221 __le64 next_aprd; /* 112-119 */
222 __le64 reserved3; /* 120-127 */
226 struct nv_adma_port_priv {
227 struct nv_adma_cpb *cpb;
229 struct nv_adma_prd *aprd;
231 void __iomem *ctl_block;
232 void __iomem *gen_block;
233 void __iomem *notifier_clear_block;
239 struct nv_host_priv {
247 unsigned int tag[ATA_MAX_QUEUE];
250 enum ncq_saw_flag_list {
251 ncq_saw_d2h = (1U << 0),
252 ncq_saw_dmas = (1U << 1),
253 ncq_saw_sdb = (1U << 2),
254 ncq_saw_backout = (1U << 3),
257 struct nv_swncq_port_priv {
258 struct ata_bmdma_prd *prd; /* our SG list */
259 dma_addr_t prd_dma; /* and its DMA mapping */
260 void __iomem *sactive_block;
261 void __iomem *irq_block;
262 void __iomem *tag_block;
265 unsigned int last_issue_tag;
267 /* fifo circular queue to store deferral command */
268 struct defer_queue defer_queue;
270 /* for NCQ interrupt analysis */
275 unsigned int ncq_flags;
279 #define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & (1 << (19 + (12 * (PORT)))))
281 static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
282 #ifdef CONFIG_PM_SLEEP
283 static int nv_pci_device_resume(struct pci_dev *pdev);
285 static void nv_ck804_host_stop(struct ata_host *host);
286 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
287 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
288 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
289 static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
290 static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
292 static int nv_hardreset(struct ata_link *link, unsigned int *class,
293 unsigned long deadline);
294 static void nv_nf2_freeze(struct ata_port *ap);
295 static void nv_nf2_thaw(struct ata_port *ap);
296 static void nv_ck804_freeze(struct ata_port *ap);
297 static void nv_ck804_thaw(struct ata_port *ap);
298 static int nv_adma_slave_config(struct scsi_device *sdev);
299 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
300 static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
301 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
302 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
303 static void nv_adma_irq_clear(struct ata_port *ap);
304 static int nv_adma_port_start(struct ata_port *ap);
305 static void nv_adma_port_stop(struct ata_port *ap);
307 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
308 static int nv_adma_port_resume(struct ata_port *ap);
310 static void nv_adma_freeze(struct ata_port *ap);
311 static void nv_adma_thaw(struct ata_port *ap);
312 static void nv_adma_error_handler(struct ata_port *ap);
313 static void nv_adma_host_stop(struct ata_host *host);
314 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
315 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
317 static void nv_mcp55_thaw(struct ata_port *ap);
318 static void nv_mcp55_freeze(struct ata_port *ap);
319 static void nv_swncq_error_handler(struct ata_port *ap);
320 static int nv_swncq_slave_config(struct scsi_device *sdev);
321 static int nv_swncq_port_start(struct ata_port *ap);
322 static void nv_swncq_qc_prep(struct ata_queued_cmd *qc);
323 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc);
324 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc);
325 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis);
326 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance);
328 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg);
329 static int nv_swncq_port_resume(struct ata_port *ap);
336 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
343 static const struct pci_device_id nv_pci_tbl[] = {
344 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
345 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
346 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
347 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
348 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
349 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
350 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
351 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), MCP5x },
352 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), MCP5x },
353 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), MCP5x },
354 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), MCP5x },
355 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
356 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
357 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
359 { } /* terminate list */
362 static struct pci_driver nv_pci_driver = {
364 .id_table = nv_pci_tbl,
365 .probe = nv_init_one,
366 #ifdef CONFIG_PM_SLEEP
367 .suspend = ata_pci_device_suspend,
368 .resume = nv_pci_device_resume,
370 .remove = ata_pci_remove_one,
373 static struct scsi_host_template nv_sht = {
374 ATA_BMDMA_SHT(DRV_NAME),
377 static struct scsi_host_template nv_adma_sht = {
378 ATA_NCQ_SHT(DRV_NAME),
379 .can_queue = NV_ADMA_MAX_CPBS,
380 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
381 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
382 .slave_configure = nv_adma_slave_config,
385 static struct scsi_host_template nv_swncq_sht = {
386 ATA_NCQ_SHT(DRV_NAME),
387 .can_queue = ATA_MAX_QUEUE - 1,
388 .sg_tablesize = LIBATA_MAX_PRD,
389 .dma_boundary = ATA_DMA_BOUNDARY,
390 .slave_configure = nv_swncq_slave_config,
394 * NV SATA controllers have various different problems with hardreset
395 * protocol depending on the specific controller and device.
399 * bko11195 reports that link doesn't come online after hardreset on
400 * generic nv's and there have been several other similar reports on
403 * bko12351#c23 reports that warmplug on MCP61 doesn't work with
408 * bko3352 reports nf2/3 controllers can't determine device signature
409 * reliably after hardreset. The following thread reports detection
410 * failure on cold boot with the standard debouncing timing.
412 * http://thread.gmane.org/gmane.linux.ide/34098
414 * bko12176 reports that hardreset fails to bring up the link during
419 * For initial probing after boot and hot plugging, hardreset mostly
420 * works fine on CK804 but curiously, reprobing on the initial port
421 * by rescanning or rmmod/insmod fails to acquire the initial D2H Reg
422 * FIS in somewhat undeterministic way.
426 * bko12351 reports that when SWNCQ is enabled, for hotplug to work,
427 * hardreset should be used and hardreset can't report proper
428 * signature, which suggests that mcp5x is closer to nf2 as long as
429 * reset quirkiness is concerned.
431 * bko12703 reports that boot probing fails for intel SSD with
432 * hardreset. Link fails to come online. Softreset works fine.
434 * The failures are varied but the following patterns seem true for
437 * - Softreset during boot always works.
439 * - Hardreset during boot sometimes fails to bring up the link on
440 * certain comibnations and device signature acquisition is
443 * - Hardreset is often necessary after hotplug.
445 * So, preferring softreset for boot probing and error handling (as
446 * hardreset might bring down the link) but using hardreset for
447 * post-boot probing should work around the above issues in most
448 * cases. Define nv_hardreset() which only kicks in for post-boot
449 * probing and use it for all variants.
451 static struct ata_port_operations nv_generic_ops = {
452 .inherits = &ata_bmdma_port_ops,
453 .lost_interrupt = ATA_OP_NULL,
454 .scr_read = nv_scr_read,
455 .scr_write = nv_scr_write,
456 .hardreset = nv_hardreset,
459 static struct ata_port_operations nv_nf2_ops = {
460 .inherits = &nv_generic_ops,
461 .freeze = nv_nf2_freeze,
465 static struct ata_port_operations nv_ck804_ops = {
466 .inherits = &nv_generic_ops,
467 .freeze = nv_ck804_freeze,
468 .thaw = nv_ck804_thaw,
469 .host_stop = nv_ck804_host_stop,
472 static struct ata_port_operations nv_adma_ops = {
473 .inherits = &nv_ck804_ops,
475 .check_atapi_dma = nv_adma_check_atapi_dma,
476 .sff_tf_read = nv_adma_tf_read,
477 .qc_defer = ata_std_qc_defer,
478 .qc_prep = nv_adma_qc_prep,
479 .qc_issue = nv_adma_qc_issue,
480 .sff_irq_clear = nv_adma_irq_clear,
482 .freeze = nv_adma_freeze,
483 .thaw = nv_adma_thaw,
484 .error_handler = nv_adma_error_handler,
485 .post_internal_cmd = nv_adma_post_internal_cmd,
487 .port_start = nv_adma_port_start,
488 .port_stop = nv_adma_port_stop,
490 .port_suspend = nv_adma_port_suspend,
491 .port_resume = nv_adma_port_resume,
493 .host_stop = nv_adma_host_stop,
496 static struct ata_port_operations nv_swncq_ops = {
497 .inherits = &nv_generic_ops,
499 .qc_defer = ata_std_qc_defer,
500 .qc_prep = nv_swncq_qc_prep,
501 .qc_issue = nv_swncq_qc_issue,
503 .freeze = nv_mcp55_freeze,
504 .thaw = nv_mcp55_thaw,
505 .error_handler = nv_swncq_error_handler,
508 .port_suspend = nv_swncq_port_suspend,
509 .port_resume = nv_swncq_port_resume,
511 .port_start = nv_swncq_port_start,
515 irq_handler_t irq_handler;
516 struct scsi_host_template *sht;
519 #define NV_PI_PRIV(_irq_handler, _sht) \
520 &(struct nv_pi_priv){ .irq_handler = _irq_handler, .sht = _sht }
522 static const struct ata_port_info nv_port_info[] = {
525 .flags = ATA_FLAG_SATA,
526 .pio_mask = NV_PIO_MASK,
527 .mwdma_mask = NV_MWDMA_MASK,
528 .udma_mask = NV_UDMA_MASK,
529 .port_ops = &nv_generic_ops,
530 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
534 .flags = ATA_FLAG_SATA,
535 .pio_mask = NV_PIO_MASK,
536 .mwdma_mask = NV_MWDMA_MASK,
537 .udma_mask = NV_UDMA_MASK,
538 .port_ops = &nv_nf2_ops,
539 .private_data = NV_PI_PRIV(nv_nf2_interrupt, &nv_sht),
543 .flags = ATA_FLAG_SATA,
544 .pio_mask = NV_PIO_MASK,
545 .mwdma_mask = NV_MWDMA_MASK,
546 .udma_mask = NV_UDMA_MASK,
547 .port_ops = &nv_ck804_ops,
548 .private_data = NV_PI_PRIV(nv_ck804_interrupt, &nv_sht),
552 .flags = ATA_FLAG_SATA | ATA_FLAG_NCQ,
553 .pio_mask = NV_PIO_MASK,
554 .mwdma_mask = NV_MWDMA_MASK,
555 .udma_mask = NV_UDMA_MASK,
556 .port_ops = &nv_adma_ops,
557 .private_data = NV_PI_PRIV(nv_adma_interrupt, &nv_adma_sht),
561 .flags = ATA_FLAG_SATA,
562 .pio_mask = NV_PIO_MASK,
563 .mwdma_mask = NV_MWDMA_MASK,
564 .udma_mask = NV_UDMA_MASK,
565 .port_ops = &nv_generic_ops,
566 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
570 .flags = ATA_FLAG_SATA | ATA_FLAG_NCQ,
571 .pio_mask = NV_PIO_MASK,
572 .mwdma_mask = NV_MWDMA_MASK,
573 .udma_mask = NV_UDMA_MASK,
574 .port_ops = &nv_swncq_ops,
575 .private_data = NV_PI_PRIV(nv_swncq_interrupt, &nv_swncq_sht),
579 MODULE_AUTHOR("NVIDIA");
580 MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
581 MODULE_LICENSE("GPL");
582 MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
583 MODULE_VERSION(DRV_VERSION);
585 static bool adma_enabled;
586 static bool swncq_enabled = true;
587 static bool msi_enabled;
589 static void nv_adma_register_mode(struct ata_port *ap)
591 struct nv_adma_port_priv *pp = ap->private_data;
592 void __iomem *mmio = pp->ctl_block;
596 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
599 status = readw(mmio + NV_ADMA_STAT);
600 while (!(status & NV_ADMA_STAT_IDLE) && count < 20) {
602 status = readw(mmio + NV_ADMA_STAT);
606 ata_port_warn(ap, "timeout waiting for ADMA IDLE, stat=0x%hx\n",
609 tmp = readw(mmio + NV_ADMA_CTL);
610 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
613 status = readw(mmio + NV_ADMA_STAT);
614 while (!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
616 status = readw(mmio + NV_ADMA_STAT);
621 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
624 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
627 static void nv_adma_mode(struct ata_port *ap)
629 struct nv_adma_port_priv *pp = ap->private_data;
630 void __iomem *mmio = pp->ctl_block;
634 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
637 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
639 tmp = readw(mmio + NV_ADMA_CTL);
640 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
642 status = readw(mmio + NV_ADMA_STAT);
643 while (((status & NV_ADMA_STAT_LEGACY) ||
644 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
646 status = readw(mmio + NV_ADMA_STAT);
651 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
654 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
657 static int nv_adma_slave_config(struct scsi_device *sdev)
659 struct ata_port *ap = ata_shost_to_port(sdev->host);
660 struct nv_adma_port_priv *pp = ap->private_data;
661 struct nv_adma_port_priv *port0, *port1;
662 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
663 unsigned long segment_boundary, flags;
664 unsigned short sg_tablesize;
667 u32 current_reg, new_reg, config_mask;
669 rc = ata_scsi_slave_config(sdev);
671 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
672 /* Not a proper libata device, ignore */
675 spin_lock_irqsave(ap->lock, flags);
677 if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) {
679 * NVIDIA reports that ADMA mode does not support ATAPI commands.
680 * Therefore ATAPI commands are sent through the legacy interface.
681 * However, the legacy interface only supports 32-bit DMA.
682 * Restrict DMA parameters as required by the legacy interface
683 * when an ATAPI device is connected.
685 segment_boundary = ATA_DMA_BOUNDARY;
686 /* Subtract 1 since an extra entry may be needed for padding, see
688 sg_tablesize = LIBATA_MAX_PRD - 1;
690 /* Since the legacy DMA engine is in use, we need to disable ADMA
693 nv_adma_register_mode(ap);
695 segment_boundary = NV_ADMA_DMA_BOUNDARY;
696 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
700 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, ¤t_reg);
702 if (ap->port_no == 1)
703 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
704 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
706 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
707 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
710 new_reg = current_reg | config_mask;
711 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
713 new_reg = current_reg & ~config_mask;
714 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
717 if (current_reg != new_reg)
718 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
720 port0 = ap->host->ports[0]->private_data;
721 port1 = ap->host->ports[1]->private_data;
722 if ((port0->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
723 (port1->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)) {
725 * We have to set the DMA mask to 32-bit if either port is in
726 * ATAPI mode, since they are on the same PCI device which is
727 * used for DMA mapping. If either SCSI device is not allocated
728 * yet, it's OK since that port will discover its correct
729 * setting when it does get allocated.
731 rc = dma_set_mask(&pdev->dev, ATA_DMA_MASK);
733 rc = dma_set_mask(&pdev->dev, pp->adma_dma_mask);
736 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
737 blk_queue_max_segments(sdev->request_queue, sg_tablesize);
739 "DMA mask 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
740 (unsigned long long)*ap->host->dev->dma_mask,
741 segment_boundary, sg_tablesize);
743 spin_unlock_irqrestore(ap->lock, flags);
748 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
750 struct nv_adma_port_priv *pp = qc->ap->private_data;
751 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
754 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
756 /* Other than when internal or pass-through commands are executed,
757 the only time this function will be called in ADMA mode will be
758 if a command fails. In the failure case we don't care about going
759 into register mode with ADMA commands pending, as the commands will
760 all shortly be aborted anyway. We assume that NCQ commands are not
761 issued via passthrough, which is the only way that switching into
762 ADMA mode could abort outstanding commands. */
763 nv_adma_register_mode(ap);
765 ata_sff_tf_read(ap, tf);
768 static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
770 unsigned int idx = 0;
772 if (tf->flags & ATA_TFLAG_ISADDR) {
773 if (tf->flags & ATA_TFLAG_LBA48) {
774 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
775 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
776 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
777 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
778 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
779 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
781 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
783 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
784 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
785 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
786 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
789 if (tf->flags & ATA_TFLAG_DEVICE)
790 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
792 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
795 cpb[idx++] = cpu_to_le16(IGN);
800 static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
802 struct nv_adma_port_priv *pp = ap->private_data;
803 u8 flags = pp->cpb[cpb_num].resp_flags;
805 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
807 if (unlikely((force_err ||
808 flags & (NV_CPB_RESP_ATA_ERR |
809 NV_CPB_RESP_CMD_ERR |
810 NV_CPB_RESP_CPB_ERR)))) {
811 struct ata_eh_info *ehi = &ap->link.eh_info;
814 ata_ehi_clear_desc(ehi);
815 __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags);
816 if (flags & NV_CPB_RESP_ATA_ERR) {
817 ata_ehi_push_desc(ehi, "ATA error");
818 ehi->err_mask |= AC_ERR_DEV;
819 } else if (flags & NV_CPB_RESP_CMD_ERR) {
820 ata_ehi_push_desc(ehi, "CMD error");
821 ehi->err_mask |= AC_ERR_DEV;
822 } else if (flags & NV_CPB_RESP_CPB_ERR) {
823 ata_ehi_push_desc(ehi, "CPB error");
824 ehi->err_mask |= AC_ERR_SYSTEM;
827 /* notifier error, but no error in CPB flags? */
828 ata_ehi_push_desc(ehi, "unknown");
829 ehi->err_mask |= AC_ERR_OTHER;
832 /* Kill all commands. EH will determine what actually failed. */
840 if (likely(flags & NV_CPB_RESP_DONE))
845 static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
847 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
849 /* freeze if hotplugged */
850 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
855 /* bail out if not our interrupt */
856 if (!(irq_stat & NV_INT_DEV))
859 /* DEV interrupt w/ no active qc? */
860 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
861 ata_sff_check_status(ap);
865 /* handle interrupt */
866 return ata_bmdma_port_intr(ap, qc);
869 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
871 struct ata_host *host = dev_instance;
873 u32 notifier_clears[2];
875 spin_lock(&host->lock);
877 for (i = 0; i < host->n_ports; i++) {
878 struct ata_port *ap = host->ports[i];
879 struct nv_adma_port_priv *pp = ap->private_data;
880 void __iomem *mmio = pp->ctl_block;
883 u32 notifier, notifier_error;
885 notifier_clears[i] = 0;
887 /* if ADMA is disabled, use standard ata interrupt handler */
888 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
889 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
890 >> (NV_INT_PORT_SHIFT * i);
891 handled += nv_host_intr(ap, irq_stat);
895 /* if in ATA register mode, check for standard interrupts */
896 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
897 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
898 >> (NV_INT_PORT_SHIFT * i);
899 if (ata_tag_valid(ap->link.active_tag))
900 /** NV_INT_DEV indication seems unreliable
901 at times at least in ADMA mode. Force it
902 on always when a command is active, to
903 prevent losing interrupts. */
904 irq_stat |= NV_INT_DEV;
905 handled += nv_host_intr(ap, irq_stat);
908 notifier = readl(mmio + NV_ADMA_NOTIFIER);
909 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
910 notifier_clears[i] = notifier | notifier_error;
912 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
914 if (!NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
919 status = readw(mmio + NV_ADMA_STAT);
922 * Clear status. Ensure the controller sees the
923 * clearing before we start looking at any of the CPB
924 * statuses, so that any CPB completions after this
925 * point in the handler will raise another interrupt.
927 writew(status, mmio + NV_ADMA_STAT);
928 readw(mmio + NV_ADMA_STAT); /* flush posted write */
931 handled++; /* irq handled if we got here */
933 /* freeze if hotplugged or controller error */
934 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
935 NV_ADMA_STAT_HOTUNPLUG |
936 NV_ADMA_STAT_TIMEOUT |
937 NV_ADMA_STAT_SERROR))) {
938 struct ata_eh_info *ehi = &ap->link.eh_info;
940 ata_ehi_clear_desc(ehi);
941 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status);
942 if (status & NV_ADMA_STAT_TIMEOUT) {
943 ehi->err_mask |= AC_ERR_SYSTEM;
944 ata_ehi_push_desc(ehi, "timeout");
945 } else if (status & NV_ADMA_STAT_HOTPLUG) {
946 ata_ehi_hotplugged(ehi);
947 ata_ehi_push_desc(ehi, "hotplug");
948 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
949 ata_ehi_hotplugged(ehi);
950 ata_ehi_push_desc(ehi, "hot unplug");
951 } else if (status & NV_ADMA_STAT_SERROR) {
952 /* let EH analyze SError and figure out cause */
953 ata_ehi_push_desc(ehi, "SError");
955 ata_ehi_push_desc(ehi, "unknown");
960 if (status & (NV_ADMA_STAT_DONE |
961 NV_ADMA_STAT_CPBERR |
962 NV_ADMA_STAT_CMD_COMPLETE)) {
963 u32 check_commands = notifier_clears[i];
967 if (status & NV_ADMA_STAT_CPBERR) {
968 /* check all active commands */
969 if (ata_tag_valid(ap->link.active_tag))
970 check_commands = 1 <<
973 check_commands = ap->link.sactive;
976 /* check CPBs for completed commands */
977 while ((pos = ffs(check_commands))) {
979 rc = nv_adma_check_cpb(ap, pos,
980 notifier_error & (1 << pos));
982 done_mask |= 1 << pos;
983 else if (unlikely(rc < 0))
985 check_commands &= ~(1 << pos);
987 ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask);
991 if (notifier_clears[0] || notifier_clears[1]) {
992 /* Note: Both notifier clear registers must be written
993 if either is set, even if one is zero, according to NVIDIA. */
994 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
995 writel(notifier_clears[0], pp->notifier_clear_block);
996 pp = host->ports[1]->private_data;
997 writel(notifier_clears[1], pp->notifier_clear_block);
1000 spin_unlock(&host->lock);
1002 return IRQ_RETVAL(handled);
1005 static void nv_adma_freeze(struct ata_port *ap)
1007 struct nv_adma_port_priv *pp = ap->private_data;
1008 void __iomem *mmio = pp->ctl_block;
1011 nv_ck804_freeze(ap);
1013 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1016 /* clear any outstanding CK804 notifications */
1017 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
1018 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1020 /* Disable interrupt */
1021 tmp = readw(mmio + NV_ADMA_CTL);
1022 writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
1023 mmio + NV_ADMA_CTL);
1024 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1027 static void nv_adma_thaw(struct ata_port *ap)
1029 struct nv_adma_port_priv *pp = ap->private_data;
1030 void __iomem *mmio = pp->ctl_block;
1035 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1038 /* Enable interrupt */
1039 tmp = readw(mmio + NV_ADMA_CTL);
1040 writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
1041 mmio + NV_ADMA_CTL);
1042 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1045 static void nv_adma_irq_clear(struct ata_port *ap)
1047 struct nv_adma_port_priv *pp = ap->private_data;
1048 void __iomem *mmio = pp->ctl_block;
1049 u32 notifier_clears[2];
1051 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
1052 ata_bmdma_irq_clear(ap);
1056 /* clear any outstanding CK804 notifications */
1057 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
1058 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1060 /* clear ADMA status */
1061 writew(0xffff, mmio + NV_ADMA_STAT);
1063 /* clear notifiers - note both ports need to be written with
1064 something even though we are only clearing on one */
1065 if (ap->port_no == 0) {
1066 notifier_clears[0] = 0xFFFFFFFF;
1067 notifier_clears[1] = 0;
1069 notifier_clears[0] = 0;
1070 notifier_clears[1] = 0xFFFFFFFF;
1072 pp = ap->host->ports[0]->private_data;
1073 writel(notifier_clears[0], pp->notifier_clear_block);
1074 pp = ap->host->ports[1]->private_data;
1075 writel(notifier_clears[1], pp->notifier_clear_block);
1078 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
1080 struct nv_adma_port_priv *pp = qc->ap->private_data;
1082 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
1083 ata_bmdma_post_internal_cmd(qc);
1086 static int nv_adma_port_start(struct ata_port *ap)
1088 struct device *dev = ap->host->dev;
1089 struct nv_adma_port_priv *pp;
1094 struct pci_dev *pdev = to_pci_dev(dev);
1100 * Ensure DMA mask is set to 32-bit before allocating legacy PRD and
1103 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1107 /* we might fallback to bmdma, allocate bmdma resources */
1108 rc = ata_bmdma_port_start(ap);
1112 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1116 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
1117 ap->port_no * NV_ADMA_PORT_SIZE;
1118 pp->ctl_block = mmio;
1119 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
1120 pp->notifier_clear_block = pp->gen_block +
1121 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1124 * Now that the legacy PRD and padding buffer are allocated we can
1125 * try to raise the DMA mask to allocate the CPB/APRD table.
1127 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
1129 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1133 pp->adma_dma_mask = *dev->dma_mask;
1135 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1136 &mem_dma, GFP_KERNEL);
1141 * First item in chunk of DMA memory:
1142 * 128-byte command parameter block (CPB)
1143 * one for each command tag
1146 pp->cpb_dma = mem_dma;
1148 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1149 writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1151 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1152 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1155 * Second item: block of ADMA_SGTBL_LEN s/g entries
1158 pp->aprd_dma = mem_dma;
1160 ap->private_data = pp;
1162 /* clear any outstanding interrupt conditions */
1163 writew(0xffff, mmio + NV_ADMA_STAT);
1165 /* initialize port variables */
1166 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1168 /* clear CPB fetch count */
1169 writew(0, mmio + NV_ADMA_CPB_COUNT);
1171 /* clear GO for register mode, enable interrupt */
1172 tmp = readw(mmio + NV_ADMA_CTL);
1173 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1174 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1176 tmp = readw(mmio + NV_ADMA_CTL);
1177 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1178 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1180 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1181 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1186 static void nv_adma_port_stop(struct ata_port *ap)
1188 struct nv_adma_port_priv *pp = ap->private_data;
1189 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;
1255 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
1257 ioport->cmd_addr = mmio;
1258 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
1259 ioport->error_addr =
1260 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1261 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1262 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1263 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1264 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1265 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
1266 ioport->status_addr =
1267 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
1268 ioport->altstatus_addr =
1269 ioport->ctl_addr = mmio + 0x20;
1272 static int nv_adma_host_init(struct ata_host *host)
1274 struct pci_dev *pdev = to_pci_dev(host->dev);
1280 /* enable ADMA on the ports */
1281 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1282 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1283 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1284 NV_MCP_SATA_CFG_20_PORT1_EN |
1285 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1287 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1289 for (i = 0; i < host->n_ports; i++)
1290 nv_adma_setup_port(host->ports[i]);
1295 static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1296 struct scatterlist *sg,
1298 struct nv_adma_prd *aprd)
1301 if (qc->tf.flags & ATA_TFLAG_WRITE)
1302 flags |= NV_APRD_WRITE;
1303 if (idx == qc->n_elem - 1)
1304 flags |= NV_APRD_END;
1306 flags |= NV_APRD_CONT;
1308 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1309 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
1310 aprd->flags = flags;
1311 aprd->packet_len = 0;
1314 static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1316 struct nv_adma_port_priv *pp = qc->ap->private_data;
1317 struct nv_adma_prd *aprd;
1318 struct scatterlist *sg;
1323 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1324 aprd = (si < 5) ? &cpb->aprd[si] :
1325 &pp->aprd[NV_ADMA_SGTBL_LEN * qc->hw_tag + (si-5)];
1326 nv_adma_fill_aprd(qc, sg, si, aprd);
1329 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->hw_tag)));
1331 cpb->next_aprd = cpu_to_le64(0);
1334 static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1336 struct nv_adma_port_priv *pp = qc->ap->private_data;
1338 /* ADMA engine can only be used for non-ATAPI DMA commands,
1339 or interrupt-driven no-data commands. */
1340 if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
1341 (qc->tf.flags & ATA_TFLAG_POLLING))
1344 if ((qc->flags & ATA_QCFLAG_DMAMAP) ||
1345 (qc->tf.protocol == ATA_PROT_NODATA))
1351 static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1353 struct nv_adma_port_priv *pp = qc->ap->private_data;
1354 struct nv_adma_cpb *cpb = &pp->cpb[qc->hw_tag];
1355 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
1358 if (nv_adma_use_reg_mode(qc)) {
1359 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1360 (qc->flags & ATA_QCFLAG_DMAMAP));
1361 nv_adma_register_mode(qc->ap);
1362 ata_bmdma_qc_prep(qc);
1366 cpb->resp_flags = NV_CPB_RESP_DONE;
1372 cpb->tag = qc->hw_tag;
1373 cpb->next_cpb_idx = 0;
1375 /* turn on NCQ flags for NCQ commands */
1376 if (qc->tf.protocol == ATA_PROT_NCQ)
1377 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1379 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1381 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1383 if (qc->flags & ATA_QCFLAG_DMAMAP) {
1384 nv_adma_fill_sg(qc, cpb);
1385 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1387 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
1389 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID
1390 until we are finished filling in all of the contents */
1392 cpb->ctl_flags = ctl_flags;
1394 cpb->resp_flags = 0;
1397 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1399 struct nv_adma_port_priv *pp = qc->ap->private_data;
1400 void __iomem *mmio = pp->ctl_block;
1401 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
1405 /* We can't handle result taskfile with NCQ commands, since
1406 retrieving the taskfile switches us out of ADMA mode and would abort
1407 existing commands. */
1408 if (unlikely(qc->tf.protocol == ATA_PROT_NCQ &&
1409 (qc->flags & ATA_QCFLAG_RESULT_TF))) {
1410 ata_dev_err(qc->dev, "NCQ w/ RESULT_TF not allowed\n");
1411 return AC_ERR_SYSTEM;
1414 if (nv_adma_use_reg_mode(qc)) {
1415 /* use ATA register mode */
1416 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
1417 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1418 (qc->flags & ATA_QCFLAG_DMAMAP));
1419 nv_adma_register_mode(qc->ap);
1420 return ata_bmdma_qc_issue(qc);
1422 nv_adma_mode(qc->ap);
1424 /* write append register, command tag in lower 8 bits
1425 and (number of cpbs to append -1) in top 8 bits */
1428 if (curr_ncq != pp->last_issue_ncq) {
1429 /* Seems to need some delay before switching between NCQ and
1430 non-NCQ commands, else we get command timeouts and such. */
1432 pp->last_issue_ncq = curr_ncq;
1435 writew(qc->hw_tag, mmio + NV_ADMA_APPEND);
1437 DPRINTK("Issued tag %u\n", qc->hw_tag);
1442 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1444 struct ata_host *host = dev_instance;
1446 unsigned int handled = 0;
1447 unsigned long flags;
1449 spin_lock_irqsave(&host->lock, flags);
1451 for (i = 0; i < host->n_ports; i++) {
1452 struct ata_port *ap = host->ports[i];
1453 struct ata_queued_cmd *qc;
1455 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1456 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
1457 handled += ata_bmdma_port_intr(ap, qc);
1460 * No request pending? Clear interrupt status
1461 * anyway, in case there's one pending.
1463 ap->ops->sff_check_status(ap);
1467 spin_unlock_irqrestore(&host->lock, flags);
1469 return IRQ_RETVAL(handled);
1472 static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
1476 for (i = 0; i < host->n_ports; i++) {
1477 handled += nv_host_intr(host->ports[i], irq_stat);
1478 irq_stat >>= NV_INT_PORT_SHIFT;
1481 return IRQ_RETVAL(handled);
1484 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
1486 struct ata_host *host = dev_instance;
1490 spin_lock(&host->lock);
1491 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
1492 ret = nv_do_interrupt(host, irq_stat);
1493 spin_unlock(&host->lock);
1498 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
1500 struct ata_host *host = dev_instance;
1504 spin_lock(&host->lock);
1505 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1506 ret = nv_do_interrupt(host, irq_stat);
1507 spin_unlock(&host->lock);
1512 static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
1514 if (sc_reg > SCR_CONTROL)
1517 *val = ioread32(link->ap->ioaddr.scr_addr + (sc_reg * 4));
1521 static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
1523 if (sc_reg > SCR_CONTROL)
1526 iowrite32(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
1530 static int nv_hardreset(struct ata_link *link, unsigned int *class,
1531 unsigned long deadline)
1533 struct ata_eh_context *ehc = &link->eh_context;
1535 /* Do hardreset iff it's post-boot probing, please read the
1536 * comment above port ops for details.
1538 if (!(link->ap->pflags & ATA_PFLAG_LOADING) &&
1539 !ata_dev_enabled(link->device))
1540 sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
1543 const unsigned long *timing = sata_ehc_deb_timing(ehc);
1546 if (!(ehc->i.flags & ATA_EHI_QUIET))
1548 "nv: skipping hardreset on occupied port\n");
1550 /* make sure the link is online */
1551 rc = sata_link_resume(link, timing, deadline);
1552 /* whine about phy resume failure but proceed */
1553 if (rc && rc != -EOPNOTSUPP)
1554 ata_link_warn(link, "failed to resume link (errno=%d)\n",
1558 /* device signature acquisition is unreliable */
1562 static void nv_nf2_freeze(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 mask = ioread8(scr_addr + NV_INT_ENABLE);
1569 mask &= ~(NV_INT_ALL << shift);
1570 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1573 static void nv_nf2_thaw(struct ata_port *ap)
1575 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1576 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1579 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
1581 mask = ioread8(scr_addr + NV_INT_ENABLE);
1582 mask |= (NV_INT_MASK << shift);
1583 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1586 static void nv_ck804_freeze(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 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1593 mask &= ~(NV_INT_ALL << shift);
1594 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1597 static void nv_ck804_thaw(struct ata_port *ap)
1599 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1600 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1603 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1605 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1606 mask |= (NV_INT_MASK << shift);
1607 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1610 static void nv_mcp55_freeze(struct ata_port *ap)
1612 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1613 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1616 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1618 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1619 mask &= ~(NV_INT_ALL_MCP55 << shift);
1620 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1623 static void nv_mcp55_thaw(struct ata_port *ap)
1625 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1626 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1629 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1631 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1632 mask |= (NV_INT_MASK_MCP55 << shift);
1633 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1636 static void nv_adma_error_handler(struct ata_port *ap)
1638 struct nv_adma_port_priv *pp = ap->private_data;
1639 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
1640 void __iomem *mmio = pp->ctl_block;
1644 if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
1645 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1646 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1647 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1648 u32 status = readw(mmio + NV_ADMA_STAT);
1649 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1650 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
1653 "EH in ADMA mode, notifier 0x%X "
1654 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1655 "next cpb count 0x%X next cpb idx 0x%x\n",
1656 notifier, notifier_error, gen_ctl, status,
1657 cpb_count, next_cpb_idx);
1659 for (i = 0; i < NV_ADMA_MAX_CPBS; i++) {
1660 struct nv_adma_cpb *cpb = &pp->cpb[i];
1661 if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
1662 ap->link.sactive & (1 << i))
1664 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1665 i, cpb->ctl_flags, cpb->resp_flags);
1669 /* Push us back into port register mode for error handling. */
1670 nv_adma_register_mode(ap);
1672 /* Mark all of the CPBs as invalid to prevent them from
1674 for (i = 0; i < NV_ADMA_MAX_CPBS; i++)
1675 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1677 /* clear CPB fetch count */
1678 writew(0, mmio + NV_ADMA_CPB_COUNT);
1681 tmp = readw(mmio + NV_ADMA_CTL);
1682 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1683 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1685 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1686 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1689 ata_bmdma_error_handler(ap);
1692 static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc)
1694 struct nv_swncq_port_priv *pp = ap->private_data;
1695 struct defer_queue *dq = &pp->defer_queue;
1698 WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE);
1699 dq->defer_bits |= (1 << qc->hw_tag);
1700 dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->hw_tag;
1703 static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap)
1705 struct nv_swncq_port_priv *pp = ap->private_data;
1706 struct defer_queue *dq = &pp->defer_queue;
1709 if (dq->head == dq->tail) /* null queue */
1712 tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)];
1713 dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON;
1714 WARN_ON(!(dq->defer_bits & (1 << tag)));
1715 dq->defer_bits &= ~(1 << tag);
1717 return ata_qc_from_tag(ap, tag);
1720 static void nv_swncq_fis_reinit(struct ata_port *ap)
1722 struct nv_swncq_port_priv *pp = ap->private_data;
1725 pp->dmafis_bits = 0;
1726 pp->sdbfis_bits = 0;
1730 static void nv_swncq_pp_reinit(struct ata_port *ap)
1732 struct nv_swncq_port_priv *pp = ap->private_data;
1733 struct defer_queue *dq = &pp->defer_queue;
1739 pp->last_issue_tag = ATA_TAG_POISON;
1740 nv_swncq_fis_reinit(ap);
1743 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis)
1745 struct nv_swncq_port_priv *pp = ap->private_data;
1747 writew(fis, pp->irq_block);
1750 static void __ata_bmdma_stop(struct ata_port *ap)
1752 struct ata_queued_cmd qc;
1755 ata_bmdma_stop(&qc);
1758 static void nv_swncq_ncq_stop(struct ata_port *ap)
1760 struct nv_swncq_port_priv *pp = ap->private_data;
1765 ata_port_err(ap, "EH in SWNCQ mode,QC:qc_active 0x%llX sactive 0x%X\n",
1766 ap->qc_active, ap->link.sactive);
1768 "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n "
1769 "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n",
1770 pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag,
1771 pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits);
1773 ata_port_err(ap, "ATA_REG 0x%X ERR_REG 0x%X\n",
1774 ap->ops->sff_check_status(ap),
1775 ioread8(ap->ioaddr.error_addr));
1777 sactive = readl(pp->sactive_block);
1778 done_mask = pp->qc_active ^ sactive;
1780 ata_port_err(ap, "tag : dhfis dmafis sdbfis sactive\n");
1781 for (i = 0; i < ATA_MAX_QUEUE; i++) {
1783 if (pp->qc_active & (1 << i))
1785 else if (done_mask & (1 << i))
1791 "tag 0x%x: %01x %01x %01x %01x %s\n", i,
1792 (pp->dhfis_bits >> i) & 0x1,
1793 (pp->dmafis_bits >> i) & 0x1,
1794 (pp->sdbfis_bits >> i) & 0x1,
1795 (sactive >> i) & 0x1,
1796 (err ? "error! tag doesn't exit" : " "));
1799 nv_swncq_pp_reinit(ap);
1800 ap->ops->sff_irq_clear(ap);
1801 __ata_bmdma_stop(ap);
1802 nv_swncq_irq_clear(ap, 0xffff);
1805 static void nv_swncq_error_handler(struct ata_port *ap)
1807 struct ata_eh_context *ehc = &ap->link.eh_context;
1809 if (ap->link.sactive) {
1810 nv_swncq_ncq_stop(ap);
1811 ehc->i.action |= ATA_EH_RESET;
1814 ata_bmdma_error_handler(ap);
1818 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg)
1820 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1824 writel(~0, mmio + NV_INT_STATUS_MCP55);
1827 writel(0, mmio + NV_INT_ENABLE_MCP55);
1830 tmp = readl(mmio + NV_CTL_MCP55);
1831 tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ);
1832 writel(tmp, mmio + NV_CTL_MCP55);
1837 static int nv_swncq_port_resume(struct ata_port *ap)
1839 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1843 writel(~0, mmio + NV_INT_STATUS_MCP55);
1846 writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1849 tmp = readl(mmio + NV_CTL_MCP55);
1850 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1856 static void nv_swncq_host_init(struct ata_host *host)
1859 void __iomem *mmio = host->iomap[NV_MMIO_BAR];
1860 struct pci_dev *pdev = to_pci_dev(host->dev);
1863 /* disable ECO 398 */
1864 pci_read_config_byte(pdev, 0x7f, ®val);
1865 regval &= ~(1 << 7);
1866 pci_write_config_byte(pdev, 0x7f, regval);
1869 tmp = readl(mmio + NV_CTL_MCP55);
1870 VPRINTK("HOST_CTL:0x%X\n", tmp);
1871 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1873 /* enable irq intr */
1874 tmp = readl(mmio + NV_INT_ENABLE_MCP55);
1875 VPRINTK("HOST_ENABLE:0x%X\n", tmp);
1876 writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1878 /* clear port irq */
1879 writel(~0x0, mmio + NV_INT_STATUS_MCP55);
1882 static int nv_swncq_slave_config(struct scsi_device *sdev)
1884 struct ata_port *ap = ata_shost_to_port(sdev->host);
1885 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
1886 struct ata_device *dev;
1889 u8 check_maxtor = 0;
1890 unsigned char model_num[ATA_ID_PROD_LEN + 1];
1892 rc = ata_scsi_slave_config(sdev);
1893 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
1894 /* Not a proper libata device, ignore */
1897 dev = &ap->link.device[sdev->id];
1898 if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI)
1901 /* if MCP51 and Maxtor, then disable ncq */
1902 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA ||
1903 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2)
1906 /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */
1907 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA ||
1908 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) {
1909 pci_read_config_byte(pdev, 0x8, &rev);
1917 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
1919 if (strncmp(model_num, "Maxtor", 6) == 0) {
1920 ata_scsi_change_queue_depth(sdev, 1);
1921 ata_dev_notice(dev, "Disabling SWNCQ mode (depth %x)\n",
1928 static int nv_swncq_port_start(struct ata_port *ap)
1930 struct device *dev = ap->host->dev;
1931 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1932 struct nv_swncq_port_priv *pp;
1935 /* we might fallback to bmdma, allocate bmdma resources */
1936 rc = ata_bmdma_port_start(ap);
1940 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1944 pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE,
1945 &pp->prd_dma, GFP_KERNEL);
1949 ap->private_data = pp;
1950 pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE;
1951 pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2;
1952 pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2;
1957 static void nv_swncq_qc_prep(struct ata_queued_cmd *qc)
1959 if (qc->tf.protocol != ATA_PROT_NCQ) {
1960 ata_bmdma_qc_prep(qc);
1964 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1967 nv_swncq_fill_sg(qc);
1970 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
1972 struct ata_port *ap = qc->ap;
1973 struct scatterlist *sg;
1974 struct nv_swncq_port_priv *pp = ap->private_data;
1975 struct ata_bmdma_prd *prd;
1976 unsigned int si, idx;
1978 prd = pp->prd + ATA_MAX_PRD * qc->hw_tag;
1981 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1985 addr = (u32)sg_dma_address(sg);
1986 sg_len = sg_dma_len(sg);
1989 offset = addr & 0xffff;
1991 if ((offset + sg_len) > 0x10000)
1992 len = 0x10000 - offset;
1994 prd[idx].addr = cpu_to_le32(addr);
1995 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
2003 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
2006 static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap,
2007 struct ata_queued_cmd *qc)
2009 struct nv_swncq_port_priv *pp = ap->private_data;
2016 writel((1 << qc->hw_tag), pp->sactive_block);
2017 pp->last_issue_tag = qc->hw_tag;
2018 pp->dhfis_bits &= ~(1 << qc->hw_tag);
2019 pp->dmafis_bits &= ~(1 << qc->hw_tag);
2020 pp->qc_active |= (0x1 << qc->hw_tag);
2022 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */
2023 ap->ops->sff_exec_command(ap, &qc->tf);
2025 DPRINTK("Issued tag %u\n", qc->hw_tag);
2030 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc)
2032 struct ata_port *ap = qc->ap;
2033 struct nv_swncq_port_priv *pp = ap->private_data;
2035 if (qc->tf.protocol != ATA_PROT_NCQ)
2036 return ata_bmdma_qc_issue(qc);
2041 nv_swncq_issue_atacmd(ap, qc);
2043 nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */
2048 static void nv_swncq_hotplug(struct ata_port *ap, u32 fis)
2051 struct ata_eh_info *ehi = &ap->link.eh_info;
2053 ata_ehi_clear_desc(ehi);
2055 /* AHCI needs SError cleared; otherwise, it might lock up */
2056 sata_scr_read(&ap->link, SCR_ERROR, &serror);
2057 sata_scr_write(&ap->link, SCR_ERROR, serror);
2059 /* analyze @irq_stat */
2060 if (fis & NV_SWNCQ_IRQ_ADDED)
2061 ata_ehi_push_desc(ehi, "hot plug");
2062 else if (fis & NV_SWNCQ_IRQ_REMOVED)
2063 ata_ehi_push_desc(ehi, "hot unplug");
2065 ata_ehi_hotplugged(ehi);
2067 /* okay, let's hand over to EH */
2068 ehi->serror |= serror;
2070 ata_port_freeze(ap);
2073 static int nv_swncq_sdbfis(struct ata_port *ap)
2075 struct ata_queued_cmd *qc;
2076 struct nv_swncq_port_priv *pp = ap->private_data;
2077 struct ata_eh_info *ehi = &ap->link.eh_info;
2083 host_stat = ap->ops->bmdma_status(ap);
2084 if (unlikely(host_stat & ATA_DMA_ERR)) {
2085 /* error when transferring data to/from memory */
2086 ata_ehi_clear_desc(ehi);
2087 ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
2088 ehi->err_mask |= AC_ERR_HOST_BUS;
2089 ehi->action |= ATA_EH_RESET;
2093 ap->ops->sff_irq_clear(ap);
2094 __ata_bmdma_stop(ap);
2096 sactive = readl(pp->sactive_block);
2097 done_mask = pp->qc_active ^ sactive;
2099 pp->qc_active &= ~done_mask;
2100 pp->dhfis_bits &= ~done_mask;
2101 pp->dmafis_bits &= ~done_mask;
2102 pp->sdbfis_bits |= done_mask;
2103 ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask);
2105 if (!ap->qc_active) {
2107 nv_swncq_pp_reinit(ap);
2111 if (pp->qc_active & pp->dhfis_bits)
2114 if ((pp->ncq_flags & ncq_saw_backout) ||
2115 (pp->qc_active ^ pp->dhfis_bits))
2116 /* if the controller can't get a device to host register FIS,
2117 * The driver needs to reissue the new command.
2121 DPRINTK("id 0x%x QC: qc_active 0x%x,"
2122 "SWNCQ:qc_active 0x%X defer_bits %X "
2123 "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n",
2124 ap->print_id, ap->qc_active, pp->qc_active,
2125 pp->defer_queue.defer_bits, pp->dhfis_bits,
2126 pp->dmafis_bits, pp->last_issue_tag);
2128 nv_swncq_fis_reinit(ap);
2131 qc = ata_qc_from_tag(ap, pp->last_issue_tag);
2132 nv_swncq_issue_atacmd(ap, qc);
2136 if (pp->defer_queue.defer_bits) {
2137 /* send deferral queue command */
2138 qc = nv_swncq_qc_from_dq(ap);
2139 WARN_ON(qc == NULL);
2140 nv_swncq_issue_atacmd(ap, qc);
2146 static inline u32 nv_swncq_tag(struct ata_port *ap)
2148 struct nv_swncq_port_priv *pp = ap->private_data;
2151 tag = readb(pp->tag_block) >> 2;
2152 return (tag & 0x1f);
2155 static void nv_swncq_dmafis(struct ata_port *ap)
2157 struct ata_queued_cmd *qc;
2161 struct nv_swncq_port_priv *pp = ap->private_data;
2163 __ata_bmdma_stop(ap);
2164 tag = nv_swncq_tag(ap);
2166 DPRINTK("dma setup tag 0x%x\n", tag);
2167 qc = ata_qc_from_tag(ap, tag);
2172 rw = qc->tf.flags & ATA_TFLAG_WRITE;
2174 /* load PRD table addr. */
2175 iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->hw_tag,
2176 ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
2178 /* specify data direction, triple-check start bit is clear */
2179 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2180 dmactl &= ~ATA_DMA_WR;
2182 dmactl |= ATA_DMA_WR;
2184 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2187 static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
2189 struct nv_swncq_port_priv *pp = ap->private_data;
2190 struct ata_queued_cmd *qc;
2191 struct ata_eh_info *ehi = &ap->link.eh_info;
2195 ata_stat = ap->ops->sff_check_status(ap);
2196 nv_swncq_irq_clear(ap, fis);
2200 if (ap->pflags & ATA_PFLAG_FROZEN)
2203 if (fis & NV_SWNCQ_IRQ_HOTPLUG) {
2204 nv_swncq_hotplug(ap, fis);
2211 if (ap->ops->scr_read(&ap->link, SCR_ERROR, &serror))
2213 ap->ops->scr_write(&ap->link, SCR_ERROR, serror);
2215 if (ata_stat & ATA_ERR) {
2216 ata_ehi_clear_desc(ehi);
2217 ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis);
2218 ehi->err_mask |= AC_ERR_DEV;
2219 ehi->serror |= serror;
2220 ehi->action |= ATA_EH_RESET;
2221 ata_port_freeze(ap);
2225 if (fis & NV_SWNCQ_IRQ_BACKOUT) {
2226 /* If the IRQ is backout, driver must issue
2227 * the new command again some time later.
2229 pp->ncq_flags |= ncq_saw_backout;
2232 if (fis & NV_SWNCQ_IRQ_SDBFIS) {
2233 pp->ncq_flags |= ncq_saw_sdb;
2234 DPRINTK("id 0x%x SWNCQ: qc_active 0x%X "
2235 "dhfis 0x%X dmafis 0x%X sactive 0x%X\n",
2236 ap->print_id, pp->qc_active, pp->dhfis_bits,
2237 pp->dmafis_bits, readl(pp->sactive_block));
2238 if (nv_swncq_sdbfis(ap) < 0)
2242 if (fis & NV_SWNCQ_IRQ_DHREGFIS) {
2243 /* The interrupt indicates the new command
2244 * was transmitted correctly to the drive.
2246 pp->dhfis_bits |= (0x1 << pp->last_issue_tag);
2247 pp->ncq_flags |= ncq_saw_d2h;
2248 if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) {
2249 ata_ehi_push_desc(ehi, "illegal fis transaction");
2250 ehi->err_mask |= AC_ERR_HSM;
2251 ehi->action |= ATA_EH_RESET;
2255 if (!(fis & NV_SWNCQ_IRQ_DMASETUP) &&
2256 !(pp->ncq_flags & ncq_saw_dmas)) {
2257 ata_stat = ap->ops->sff_check_status(ap);
2258 if (ata_stat & ATA_BUSY)
2261 if (pp->defer_queue.defer_bits) {
2262 DPRINTK("send next command\n");
2263 qc = nv_swncq_qc_from_dq(ap);
2264 nv_swncq_issue_atacmd(ap, qc);
2269 if (fis & NV_SWNCQ_IRQ_DMASETUP) {
2270 /* program the dma controller with appropriate PRD buffers
2271 * and start the DMA transfer for requested command.
2273 pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap));
2274 pp->ncq_flags |= ncq_saw_dmas;
2275 nv_swncq_dmafis(ap);
2281 ata_ehi_push_desc(ehi, "fis:0x%x", fis);
2282 ata_port_freeze(ap);
2286 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance)
2288 struct ata_host *host = dev_instance;
2290 unsigned int handled = 0;
2291 unsigned long flags;
2294 spin_lock_irqsave(&host->lock, flags);
2296 irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55);
2298 for (i = 0; i < host->n_ports; i++) {
2299 struct ata_port *ap = host->ports[i];
2301 if (ap->link.sactive) {
2302 nv_swncq_host_interrupt(ap, (u16)irq_stat);
2305 if (irq_stat) /* reserve Hotplug */
2306 nv_swncq_irq_clear(ap, 0xfff0);
2308 handled += nv_host_intr(ap, (u8)irq_stat);
2310 irq_stat >>= NV_INT_PORT_SHIFT_MCP55;
2313 spin_unlock_irqrestore(&host->lock, flags);
2315 return IRQ_RETVAL(handled);
2318 static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2320 const struct ata_port_info *ppi[] = { NULL, NULL };
2321 struct nv_pi_priv *ipriv;
2322 struct ata_host *host;
2323 struct nv_host_priv *hpriv;
2327 unsigned long type = ent->driver_data;
2329 // Make sure this is a SATA controller by counting the number of bars
2330 // (NVIDIA SATA controllers will always have six bars). Otherwise,
2331 // it's an IDE controller and we ignore it.
2332 for (bar = 0; bar < 6; bar++)
2333 if (pci_resource_start(pdev, bar) == 0)
2336 ata_print_version_once(&pdev->dev, DRV_VERSION);
2338 rc = pcim_enable_device(pdev);
2342 /* determine type and allocate host */
2343 if (type == CK804 && adma_enabled) {
2344 dev_notice(&pdev->dev, "Using ADMA mode\n");
2346 } else if (type == MCP5x && swncq_enabled) {
2347 dev_notice(&pdev->dev, "Using SWNCQ mode\n");
2351 ppi[0] = &nv_port_info[type];
2352 ipriv = ppi[0]->private_data;
2353 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
2357 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
2361 host->private_data = hpriv;
2363 /* request and iomap NV_MMIO_BAR */
2364 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
2368 /* configure SCR access */
2369 base = host->iomap[NV_MMIO_BAR];
2370 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
2371 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
2373 /* enable SATA space for CK804 */
2374 if (type >= CK804) {
2377 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2378 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2379 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2384 rc = nv_adma_host_init(host);
2387 } else if (type == SWNCQ)
2388 nv_swncq_host_init(host);
2391 dev_notice(&pdev->dev, "Using MSI\n");
2392 pci_enable_msi(pdev);
2395 pci_set_master(pdev);
2396 return ata_pci_sff_activate_host(host, ipriv->irq_handler, ipriv->sht);
2399 #ifdef CONFIG_PM_SLEEP
2400 static int nv_pci_device_resume(struct pci_dev *pdev)
2402 struct ata_host *host = pci_get_drvdata(pdev);
2403 struct nv_host_priv *hpriv = host->private_data;
2406 rc = ata_pci_device_do_resume(pdev);
2410 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2411 if (hpriv->type >= CK804) {
2414 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2415 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2416 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2418 if (hpriv->type == ADMA) {
2420 struct nv_adma_port_priv *pp;
2421 /* enable/disable ADMA on the ports appropriately */
2422 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2424 pp = host->ports[0]->private_data;
2425 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2426 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2427 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2429 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
2430 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2431 pp = host->ports[1]->private_data;
2432 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2433 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
2434 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2436 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
2437 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2439 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2443 ata_host_resume(host);
2449 static void nv_ck804_host_stop(struct ata_host *host)
2451 struct pci_dev *pdev = to_pci_dev(host->dev);
2454 /* disable SATA space for CK804 */
2455 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2456 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2457 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2460 static void nv_adma_host_stop(struct ata_host *host)
2462 struct pci_dev *pdev = to_pci_dev(host->dev);
2465 /* disable ADMA on the ports */
2466 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2467 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2468 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
2469 NV_MCP_SATA_CFG_20_PORT1_EN |
2470 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2472 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2474 nv_ck804_host_stop(host);
2477 module_pci_driver(nv_pci_driver);
2479 module_param_named(adma, adma_enabled, bool, 0444);
2480 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: false)");
2481 module_param_named(swncq, swncq_enabled, bool, 0444);
2482 MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");
2483 module_param_named(msi, msi_enabled, bool, 0444);
2484 MODULE_PARM_DESC(msi, "Enable use of MSI (Default: false)");