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 * raise the DMA mask to allocate the CPB/APRD table.
1127 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
1129 pp->adma_dma_mask = *dev->dma_mask;
1131 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1132 &mem_dma, GFP_KERNEL);
1137 * First item in chunk of DMA memory:
1138 * 128-byte command parameter block (CPB)
1139 * one for each command tag
1142 pp->cpb_dma = mem_dma;
1144 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1145 writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1147 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1148 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1151 * Second item: block of ADMA_SGTBL_LEN s/g entries
1154 pp->aprd_dma = mem_dma;
1156 ap->private_data = pp;
1158 /* clear any outstanding interrupt conditions */
1159 writew(0xffff, mmio + NV_ADMA_STAT);
1161 /* initialize port variables */
1162 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1164 /* clear CPB fetch count */
1165 writew(0, mmio + NV_ADMA_CPB_COUNT);
1167 /* clear GO for register mode, enable interrupt */
1168 tmp = readw(mmio + NV_ADMA_CTL);
1169 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1170 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1172 tmp = readw(mmio + NV_ADMA_CTL);
1173 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1174 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1176 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1177 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1182 static void nv_adma_port_stop(struct ata_port *ap)
1184 struct nv_adma_port_priv *pp = ap->private_data;
1185 void __iomem *mmio = pp->ctl_block;
1188 writew(0, mmio + NV_ADMA_CTL);
1192 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1194 struct nv_adma_port_priv *pp = ap->private_data;
1195 void __iomem *mmio = pp->ctl_block;
1197 /* Go to register mode - clears GO */
1198 nv_adma_register_mode(ap);
1200 /* clear CPB fetch count */
1201 writew(0, mmio + NV_ADMA_CPB_COUNT);
1203 /* disable interrupt, shut down port */
1204 writew(0, mmio + NV_ADMA_CTL);
1209 static int nv_adma_port_resume(struct ata_port *ap)
1211 struct nv_adma_port_priv *pp = ap->private_data;
1212 void __iomem *mmio = pp->ctl_block;
1215 /* set CPB block location */
1216 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1217 writel((pp->cpb_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1219 /* clear any outstanding interrupt conditions */
1220 writew(0xffff, mmio + NV_ADMA_STAT);
1222 /* initialize port variables */
1223 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1225 /* clear CPB fetch count */
1226 writew(0, mmio + NV_ADMA_CPB_COUNT);
1228 /* clear GO for register mode, enable interrupt */
1229 tmp = readw(mmio + NV_ADMA_CTL);
1230 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1231 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1233 tmp = readw(mmio + NV_ADMA_CTL);
1234 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1235 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1237 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1238 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1244 static void nv_adma_setup_port(struct ata_port *ap)
1246 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1247 struct ata_ioports *ioport = &ap->ioaddr;
1251 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
1253 ioport->cmd_addr = mmio;
1254 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
1255 ioport->error_addr =
1256 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1257 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1258 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1259 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1260 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1261 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
1262 ioport->status_addr =
1263 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
1264 ioport->altstatus_addr =
1265 ioport->ctl_addr = mmio + 0x20;
1268 static int nv_adma_host_init(struct ata_host *host)
1270 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;
1319 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1320 aprd = (si < 5) ? &cpb->aprd[si] :
1321 &pp->aprd[NV_ADMA_SGTBL_LEN * qc->hw_tag + (si-5)];
1322 nv_adma_fill_aprd(qc, sg, si, aprd);
1325 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->hw_tag)));
1327 cpb->next_aprd = cpu_to_le64(0);
1330 static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1332 struct nv_adma_port_priv *pp = qc->ap->private_data;
1334 /* ADMA engine can only be used for non-ATAPI DMA commands,
1335 or interrupt-driven no-data commands. */
1336 if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
1337 (qc->tf.flags & ATA_TFLAG_POLLING))
1340 if ((qc->flags & ATA_QCFLAG_DMAMAP) ||
1341 (qc->tf.protocol == ATA_PROT_NODATA))
1347 static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1349 struct nv_adma_port_priv *pp = qc->ap->private_data;
1350 struct nv_adma_cpb *cpb = &pp->cpb[qc->hw_tag];
1351 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
1354 if (nv_adma_use_reg_mode(qc)) {
1355 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1356 (qc->flags & ATA_QCFLAG_DMAMAP));
1357 nv_adma_register_mode(qc->ap);
1358 ata_bmdma_qc_prep(qc);
1362 cpb->resp_flags = NV_CPB_RESP_DONE;
1368 cpb->tag = qc->hw_tag;
1369 cpb->next_cpb_idx = 0;
1371 /* turn on NCQ flags for NCQ commands */
1372 if (qc->tf.protocol == ATA_PROT_NCQ)
1373 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1375 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1377 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1379 if (qc->flags & ATA_QCFLAG_DMAMAP) {
1380 nv_adma_fill_sg(qc, cpb);
1381 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1383 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
1385 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID
1386 until we are finished filling in all of the contents */
1388 cpb->ctl_flags = ctl_flags;
1390 cpb->resp_flags = 0;
1393 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1395 struct nv_adma_port_priv *pp = qc->ap->private_data;
1396 void __iomem *mmio = pp->ctl_block;
1397 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
1401 /* We can't handle result taskfile with NCQ commands, since
1402 retrieving the taskfile switches us out of ADMA mode and would abort
1403 existing commands. */
1404 if (unlikely(qc->tf.protocol == ATA_PROT_NCQ &&
1405 (qc->flags & ATA_QCFLAG_RESULT_TF))) {
1406 ata_dev_err(qc->dev, "NCQ w/ RESULT_TF not allowed\n");
1407 return AC_ERR_SYSTEM;
1410 if (nv_adma_use_reg_mode(qc)) {
1411 /* use ATA register mode */
1412 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
1413 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1414 (qc->flags & ATA_QCFLAG_DMAMAP));
1415 nv_adma_register_mode(qc->ap);
1416 return ata_bmdma_qc_issue(qc);
1418 nv_adma_mode(qc->ap);
1420 /* write append register, command tag in lower 8 bits
1421 and (number of cpbs to append -1) in top 8 bits */
1424 if (curr_ncq != pp->last_issue_ncq) {
1425 /* Seems to need some delay before switching between NCQ and
1426 non-NCQ commands, else we get command timeouts and such. */
1428 pp->last_issue_ncq = curr_ncq;
1431 writew(qc->hw_tag, mmio + NV_ADMA_APPEND);
1433 DPRINTK("Issued tag %u\n", qc->hw_tag);
1438 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1440 struct ata_host *host = dev_instance;
1442 unsigned int handled = 0;
1443 unsigned long flags;
1445 spin_lock_irqsave(&host->lock, flags);
1447 for (i = 0; i < host->n_ports; i++) {
1448 struct ata_port *ap = host->ports[i];
1449 struct ata_queued_cmd *qc;
1451 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1452 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
1453 handled += ata_bmdma_port_intr(ap, qc);
1456 * No request pending? Clear interrupt status
1457 * anyway, in case there's one pending.
1459 ap->ops->sff_check_status(ap);
1463 spin_unlock_irqrestore(&host->lock, flags);
1465 return IRQ_RETVAL(handled);
1468 static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
1472 for (i = 0; i < host->n_ports; i++) {
1473 handled += nv_host_intr(host->ports[i], irq_stat);
1474 irq_stat >>= NV_INT_PORT_SHIFT;
1477 return IRQ_RETVAL(handled);
1480 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
1482 struct ata_host *host = dev_instance;
1486 spin_lock(&host->lock);
1487 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
1488 ret = nv_do_interrupt(host, irq_stat);
1489 spin_unlock(&host->lock);
1494 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
1496 struct ata_host *host = dev_instance;
1500 spin_lock(&host->lock);
1501 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1502 ret = nv_do_interrupt(host, irq_stat);
1503 spin_unlock(&host->lock);
1508 static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
1510 if (sc_reg > SCR_CONTROL)
1513 *val = ioread32(link->ap->ioaddr.scr_addr + (sc_reg * 4));
1517 static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
1519 if (sc_reg > SCR_CONTROL)
1522 iowrite32(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
1526 static int nv_hardreset(struct ata_link *link, unsigned int *class,
1527 unsigned long deadline)
1529 struct ata_eh_context *ehc = &link->eh_context;
1531 /* Do hardreset iff it's post-boot probing, please read the
1532 * comment above port ops for details.
1534 if (!(link->ap->pflags & ATA_PFLAG_LOADING) &&
1535 !ata_dev_enabled(link->device))
1536 sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
1539 const unsigned long *timing = sata_ehc_deb_timing(ehc);
1542 if (!(ehc->i.flags & ATA_EHI_QUIET))
1544 "nv: skipping hardreset on occupied port\n");
1546 /* make sure the link is online */
1547 rc = sata_link_resume(link, timing, deadline);
1548 /* whine about phy resume failure but proceed */
1549 if (rc && rc != -EOPNOTSUPP)
1550 ata_link_warn(link, "failed to resume link (errno=%d)\n",
1554 /* device signature acquisition is unreliable */
1558 static void nv_nf2_freeze(struct ata_port *ap)
1560 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1561 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1564 mask = ioread8(scr_addr + NV_INT_ENABLE);
1565 mask &= ~(NV_INT_ALL << shift);
1566 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1569 static void nv_nf2_thaw(struct ata_port *ap)
1571 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1572 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1575 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
1577 mask = ioread8(scr_addr + NV_INT_ENABLE);
1578 mask |= (NV_INT_MASK << shift);
1579 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1582 static void nv_ck804_freeze(struct ata_port *ap)
1584 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1585 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1588 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1589 mask &= ~(NV_INT_ALL << shift);
1590 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1593 static void nv_ck804_thaw(struct ata_port *ap)
1595 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1596 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1599 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1601 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1602 mask |= (NV_INT_MASK << shift);
1603 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1606 static void nv_mcp55_freeze(struct ata_port *ap)
1608 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1609 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1612 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1614 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1615 mask &= ~(NV_INT_ALL_MCP55 << shift);
1616 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1619 static void nv_mcp55_thaw(struct ata_port *ap)
1621 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1622 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1625 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1627 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1628 mask |= (NV_INT_MASK_MCP55 << shift);
1629 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1632 static void nv_adma_error_handler(struct ata_port *ap)
1634 struct nv_adma_port_priv *pp = ap->private_data;
1635 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
1636 void __iomem *mmio = pp->ctl_block;
1640 if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
1641 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1642 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1643 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1644 u32 status = readw(mmio + NV_ADMA_STAT);
1645 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1646 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
1649 "EH in ADMA mode, notifier 0x%X "
1650 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1651 "next cpb count 0x%X next cpb idx 0x%x\n",
1652 notifier, notifier_error, gen_ctl, status,
1653 cpb_count, next_cpb_idx);
1655 for (i = 0; i < NV_ADMA_MAX_CPBS; i++) {
1656 struct nv_adma_cpb *cpb = &pp->cpb[i];
1657 if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
1658 ap->link.sactive & (1 << i))
1660 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1661 i, cpb->ctl_flags, cpb->resp_flags);
1665 /* Push us back into port register mode for error handling. */
1666 nv_adma_register_mode(ap);
1668 /* Mark all of the CPBs as invalid to prevent them from
1670 for (i = 0; i < NV_ADMA_MAX_CPBS; i++)
1671 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1673 /* clear CPB fetch count */
1674 writew(0, mmio + NV_ADMA_CPB_COUNT);
1677 tmp = readw(mmio + NV_ADMA_CTL);
1678 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1679 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1681 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1682 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1685 ata_bmdma_error_handler(ap);
1688 static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc)
1690 struct nv_swncq_port_priv *pp = ap->private_data;
1691 struct defer_queue *dq = &pp->defer_queue;
1694 WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE);
1695 dq->defer_bits |= (1 << qc->hw_tag);
1696 dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->hw_tag;
1699 static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap)
1701 struct nv_swncq_port_priv *pp = ap->private_data;
1702 struct defer_queue *dq = &pp->defer_queue;
1705 if (dq->head == dq->tail) /* null queue */
1708 tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)];
1709 dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON;
1710 WARN_ON(!(dq->defer_bits & (1 << tag)));
1711 dq->defer_bits &= ~(1 << tag);
1713 return ata_qc_from_tag(ap, tag);
1716 static void nv_swncq_fis_reinit(struct ata_port *ap)
1718 struct nv_swncq_port_priv *pp = ap->private_data;
1721 pp->dmafis_bits = 0;
1722 pp->sdbfis_bits = 0;
1726 static void nv_swncq_pp_reinit(struct ata_port *ap)
1728 struct nv_swncq_port_priv *pp = ap->private_data;
1729 struct defer_queue *dq = &pp->defer_queue;
1735 pp->last_issue_tag = ATA_TAG_POISON;
1736 nv_swncq_fis_reinit(ap);
1739 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis)
1741 struct nv_swncq_port_priv *pp = ap->private_data;
1743 writew(fis, pp->irq_block);
1746 static void __ata_bmdma_stop(struct ata_port *ap)
1748 struct ata_queued_cmd qc;
1751 ata_bmdma_stop(&qc);
1754 static void nv_swncq_ncq_stop(struct ata_port *ap)
1756 struct nv_swncq_port_priv *pp = ap->private_data;
1761 ata_port_err(ap, "EH in SWNCQ mode,QC:qc_active 0x%llX sactive 0x%X\n",
1762 ap->qc_active, ap->link.sactive);
1764 "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n "
1765 "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n",
1766 pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag,
1767 pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits);
1769 ata_port_err(ap, "ATA_REG 0x%X ERR_REG 0x%X\n",
1770 ap->ops->sff_check_status(ap),
1771 ioread8(ap->ioaddr.error_addr));
1773 sactive = readl(pp->sactive_block);
1774 done_mask = pp->qc_active ^ sactive;
1776 ata_port_err(ap, "tag : dhfis dmafis sdbfis sactive\n");
1777 for (i = 0; i < ATA_MAX_QUEUE; i++) {
1779 if (pp->qc_active & (1 << i))
1781 else if (done_mask & (1 << i))
1787 "tag 0x%x: %01x %01x %01x %01x %s\n", i,
1788 (pp->dhfis_bits >> i) & 0x1,
1789 (pp->dmafis_bits >> i) & 0x1,
1790 (pp->sdbfis_bits >> i) & 0x1,
1791 (sactive >> i) & 0x1,
1792 (err ? "error! tag doesn't exit" : " "));
1795 nv_swncq_pp_reinit(ap);
1796 ap->ops->sff_irq_clear(ap);
1797 __ata_bmdma_stop(ap);
1798 nv_swncq_irq_clear(ap, 0xffff);
1801 static void nv_swncq_error_handler(struct ata_port *ap)
1803 struct ata_eh_context *ehc = &ap->link.eh_context;
1805 if (ap->link.sactive) {
1806 nv_swncq_ncq_stop(ap);
1807 ehc->i.action |= ATA_EH_RESET;
1810 ata_bmdma_error_handler(ap);
1814 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg)
1816 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1820 writel(~0, mmio + NV_INT_STATUS_MCP55);
1823 writel(0, mmio + NV_INT_ENABLE_MCP55);
1826 tmp = readl(mmio + NV_CTL_MCP55);
1827 tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ);
1828 writel(tmp, mmio + NV_CTL_MCP55);
1833 static int nv_swncq_port_resume(struct ata_port *ap)
1835 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1839 writel(~0, mmio + NV_INT_STATUS_MCP55);
1842 writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1845 tmp = readl(mmio + NV_CTL_MCP55);
1846 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1852 static void nv_swncq_host_init(struct ata_host *host)
1855 void __iomem *mmio = host->iomap[NV_MMIO_BAR];
1856 struct pci_dev *pdev = to_pci_dev(host->dev);
1859 /* disable ECO 398 */
1860 pci_read_config_byte(pdev, 0x7f, ®val);
1861 regval &= ~(1 << 7);
1862 pci_write_config_byte(pdev, 0x7f, regval);
1865 tmp = readl(mmio + NV_CTL_MCP55);
1866 VPRINTK("HOST_CTL:0x%X\n", tmp);
1867 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1869 /* enable irq intr */
1870 tmp = readl(mmio + NV_INT_ENABLE_MCP55);
1871 VPRINTK("HOST_ENABLE:0x%X\n", tmp);
1872 writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1874 /* clear port irq */
1875 writel(~0x0, mmio + NV_INT_STATUS_MCP55);
1878 static int nv_swncq_slave_config(struct scsi_device *sdev)
1880 struct ata_port *ap = ata_shost_to_port(sdev->host);
1881 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
1882 struct ata_device *dev;
1885 u8 check_maxtor = 0;
1886 unsigned char model_num[ATA_ID_PROD_LEN + 1];
1888 rc = ata_scsi_slave_config(sdev);
1889 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
1890 /* Not a proper libata device, ignore */
1893 dev = &ap->link.device[sdev->id];
1894 if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI)
1897 /* if MCP51 and Maxtor, then disable ncq */
1898 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA ||
1899 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2)
1902 /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */
1903 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA ||
1904 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) {
1905 pci_read_config_byte(pdev, 0x8, &rev);
1913 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
1915 if (strncmp(model_num, "Maxtor", 6) == 0) {
1916 ata_scsi_change_queue_depth(sdev, 1);
1917 ata_dev_notice(dev, "Disabling SWNCQ mode (depth %x)\n",
1924 static int nv_swncq_port_start(struct ata_port *ap)
1926 struct device *dev = ap->host->dev;
1927 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1928 struct nv_swncq_port_priv *pp;
1931 /* we might fallback to bmdma, allocate bmdma resources */
1932 rc = ata_bmdma_port_start(ap);
1936 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1940 pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE,
1941 &pp->prd_dma, GFP_KERNEL);
1945 ap->private_data = pp;
1946 pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE;
1947 pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2;
1948 pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2;
1953 static void nv_swncq_qc_prep(struct ata_queued_cmd *qc)
1955 if (qc->tf.protocol != ATA_PROT_NCQ) {
1956 ata_bmdma_qc_prep(qc);
1960 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1963 nv_swncq_fill_sg(qc);
1966 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
1968 struct ata_port *ap = qc->ap;
1969 struct scatterlist *sg;
1970 struct nv_swncq_port_priv *pp = ap->private_data;
1971 struct ata_bmdma_prd *prd;
1972 unsigned int si, idx;
1974 prd = pp->prd + ATA_MAX_PRD * qc->hw_tag;
1977 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1981 addr = (u32)sg_dma_address(sg);
1982 sg_len = sg_dma_len(sg);
1985 offset = addr & 0xffff;
1987 if ((offset + sg_len) > 0x10000)
1988 len = 0x10000 - offset;
1990 prd[idx].addr = cpu_to_le32(addr);
1991 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
1999 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
2002 static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap,
2003 struct ata_queued_cmd *qc)
2005 struct nv_swncq_port_priv *pp = ap->private_data;
2012 writel((1 << qc->hw_tag), pp->sactive_block);
2013 pp->last_issue_tag = qc->hw_tag;
2014 pp->dhfis_bits &= ~(1 << qc->hw_tag);
2015 pp->dmafis_bits &= ~(1 << qc->hw_tag);
2016 pp->qc_active |= (0x1 << qc->hw_tag);
2018 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */
2019 ap->ops->sff_exec_command(ap, &qc->tf);
2021 DPRINTK("Issued tag %u\n", qc->hw_tag);
2026 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc)
2028 struct ata_port *ap = qc->ap;
2029 struct nv_swncq_port_priv *pp = ap->private_data;
2031 if (qc->tf.protocol != ATA_PROT_NCQ)
2032 return ata_bmdma_qc_issue(qc);
2037 nv_swncq_issue_atacmd(ap, qc);
2039 nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */
2044 static void nv_swncq_hotplug(struct ata_port *ap, u32 fis)
2047 struct ata_eh_info *ehi = &ap->link.eh_info;
2049 ata_ehi_clear_desc(ehi);
2051 /* AHCI needs SError cleared; otherwise, it might lock up */
2052 sata_scr_read(&ap->link, SCR_ERROR, &serror);
2053 sata_scr_write(&ap->link, SCR_ERROR, serror);
2055 /* analyze @irq_stat */
2056 if (fis & NV_SWNCQ_IRQ_ADDED)
2057 ata_ehi_push_desc(ehi, "hot plug");
2058 else if (fis & NV_SWNCQ_IRQ_REMOVED)
2059 ata_ehi_push_desc(ehi, "hot unplug");
2061 ata_ehi_hotplugged(ehi);
2063 /* okay, let's hand over to EH */
2064 ehi->serror |= serror;
2066 ata_port_freeze(ap);
2069 static int nv_swncq_sdbfis(struct ata_port *ap)
2071 struct ata_queued_cmd *qc;
2072 struct nv_swncq_port_priv *pp = ap->private_data;
2073 struct ata_eh_info *ehi = &ap->link.eh_info;
2079 host_stat = ap->ops->bmdma_status(ap);
2080 if (unlikely(host_stat & ATA_DMA_ERR)) {
2081 /* error when transferring data to/from memory */
2082 ata_ehi_clear_desc(ehi);
2083 ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
2084 ehi->err_mask |= AC_ERR_HOST_BUS;
2085 ehi->action |= ATA_EH_RESET;
2089 ap->ops->sff_irq_clear(ap);
2090 __ata_bmdma_stop(ap);
2092 sactive = readl(pp->sactive_block);
2093 done_mask = pp->qc_active ^ sactive;
2095 pp->qc_active &= ~done_mask;
2096 pp->dhfis_bits &= ~done_mask;
2097 pp->dmafis_bits &= ~done_mask;
2098 pp->sdbfis_bits |= done_mask;
2099 ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask);
2101 if (!ap->qc_active) {
2103 nv_swncq_pp_reinit(ap);
2107 if (pp->qc_active & pp->dhfis_bits)
2110 if ((pp->ncq_flags & ncq_saw_backout) ||
2111 (pp->qc_active ^ pp->dhfis_bits))
2112 /* if the controller can't get a device to host register FIS,
2113 * The driver needs to reissue the new command.
2117 DPRINTK("id 0x%x QC: qc_active 0x%x,"
2118 "SWNCQ:qc_active 0x%X defer_bits %X "
2119 "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n",
2120 ap->print_id, ap->qc_active, pp->qc_active,
2121 pp->defer_queue.defer_bits, pp->dhfis_bits,
2122 pp->dmafis_bits, pp->last_issue_tag);
2124 nv_swncq_fis_reinit(ap);
2127 qc = ata_qc_from_tag(ap, pp->last_issue_tag);
2128 nv_swncq_issue_atacmd(ap, qc);
2132 if (pp->defer_queue.defer_bits) {
2133 /* send deferral queue command */
2134 qc = nv_swncq_qc_from_dq(ap);
2135 WARN_ON(qc == NULL);
2136 nv_swncq_issue_atacmd(ap, qc);
2142 static inline u32 nv_swncq_tag(struct ata_port *ap)
2144 struct nv_swncq_port_priv *pp = ap->private_data;
2147 tag = readb(pp->tag_block) >> 2;
2148 return (tag & 0x1f);
2151 static void nv_swncq_dmafis(struct ata_port *ap)
2153 struct ata_queued_cmd *qc;
2157 struct nv_swncq_port_priv *pp = ap->private_data;
2159 __ata_bmdma_stop(ap);
2160 tag = nv_swncq_tag(ap);
2162 DPRINTK("dma setup tag 0x%x\n", tag);
2163 qc = ata_qc_from_tag(ap, tag);
2168 rw = qc->tf.flags & ATA_TFLAG_WRITE;
2170 /* load PRD table addr. */
2171 iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->hw_tag,
2172 ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
2174 /* specify data direction, triple-check start bit is clear */
2175 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2176 dmactl &= ~ATA_DMA_WR;
2178 dmactl |= ATA_DMA_WR;
2180 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2183 static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
2185 struct nv_swncq_port_priv *pp = ap->private_data;
2186 struct ata_queued_cmd *qc;
2187 struct ata_eh_info *ehi = &ap->link.eh_info;
2191 ata_stat = ap->ops->sff_check_status(ap);
2192 nv_swncq_irq_clear(ap, fis);
2196 if (ap->pflags & ATA_PFLAG_FROZEN)
2199 if (fis & NV_SWNCQ_IRQ_HOTPLUG) {
2200 nv_swncq_hotplug(ap, fis);
2207 if (ap->ops->scr_read(&ap->link, SCR_ERROR, &serror))
2209 ap->ops->scr_write(&ap->link, SCR_ERROR, serror);
2211 if (ata_stat & ATA_ERR) {
2212 ata_ehi_clear_desc(ehi);
2213 ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis);
2214 ehi->err_mask |= AC_ERR_DEV;
2215 ehi->serror |= serror;
2216 ehi->action |= ATA_EH_RESET;
2217 ata_port_freeze(ap);
2221 if (fis & NV_SWNCQ_IRQ_BACKOUT) {
2222 /* If the IRQ is backout, driver must issue
2223 * the new command again some time later.
2225 pp->ncq_flags |= ncq_saw_backout;
2228 if (fis & NV_SWNCQ_IRQ_SDBFIS) {
2229 pp->ncq_flags |= ncq_saw_sdb;
2230 DPRINTK("id 0x%x SWNCQ: qc_active 0x%X "
2231 "dhfis 0x%X dmafis 0x%X sactive 0x%X\n",
2232 ap->print_id, pp->qc_active, pp->dhfis_bits,
2233 pp->dmafis_bits, readl(pp->sactive_block));
2234 if (nv_swncq_sdbfis(ap) < 0)
2238 if (fis & NV_SWNCQ_IRQ_DHREGFIS) {
2239 /* The interrupt indicates the new command
2240 * was transmitted correctly to the drive.
2242 pp->dhfis_bits |= (0x1 << pp->last_issue_tag);
2243 pp->ncq_flags |= ncq_saw_d2h;
2244 if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) {
2245 ata_ehi_push_desc(ehi, "illegal fis transaction");
2246 ehi->err_mask |= AC_ERR_HSM;
2247 ehi->action |= ATA_EH_RESET;
2251 if (!(fis & NV_SWNCQ_IRQ_DMASETUP) &&
2252 !(pp->ncq_flags & ncq_saw_dmas)) {
2253 ata_stat = ap->ops->sff_check_status(ap);
2254 if (ata_stat & ATA_BUSY)
2257 if (pp->defer_queue.defer_bits) {
2258 DPRINTK("send next command\n");
2259 qc = nv_swncq_qc_from_dq(ap);
2260 nv_swncq_issue_atacmd(ap, qc);
2265 if (fis & NV_SWNCQ_IRQ_DMASETUP) {
2266 /* program the dma controller with appropriate PRD buffers
2267 * and start the DMA transfer for requested command.
2269 pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap));
2270 pp->ncq_flags |= ncq_saw_dmas;
2271 nv_swncq_dmafis(ap);
2277 ata_ehi_push_desc(ehi, "fis:0x%x", fis);
2278 ata_port_freeze(ap);
2282 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance)
2284 struct ata_host *host = dev_instance;
2286 unsigned int handled = 0;
2287 unsigned long flags;
2290 spin_lock_irqsave(&host->lock, flags);
2292 irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55);
2294 for (i = 0; i < host->n_ports; i++) {
2295 struct ata_port *ap = host->ports[i];
2297 if (ap->link.sactive) {
2298 nv_swncq_host_interrupt(ap, (u16)irq_stat);
2301 if (irq_stat) /* reserve Hotplug */
2302 nv_swncq_irq_clear(ap, 0xfff0);
2304 handled += nv_host_intr(ap, (u8)irq_stat);
2306 irq_stat >>= NV_INT_PORT_SHIFT_MCP55;
2309 spin_unlock_irqrestore(&host->lock, flags);
2311 return IRQ_RETVAL(handled);
2314 static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2316 const struct ata_port_info *ppi[] = { NULL, NULL };
2317 struct nv_pi_priv *ipriv;
2318 struct ata_host *host;
2319 struct nv_host_priv *hpriv;
2323 unsigned long type = ent->driver_data;
2325 // Make sure this is a SATA controller by counting the number of bars
2326 // (NVIDIA SATA controllers will always have six bars). Otherwise,
2327 // it's an IDE controller and we ignore it.
2328 for (bar = 0; bar < 6; bar++)
2329 if (pci_resource_start(pdev, bar) == 0)
2332 ata_print_version_once(&pdev->dev, DRV_VERSION);
2334 rc = pcim_enable_device(pdev);
2338 /* determine type and allocate host */
2339 if (type == CK804 && adma_enabled) {
2340 dev_notice(&pdev->dev, "Using ADMA mode\n");
2342 } else if (type == MCP5x && swncq_enabled) {
2343 dev_notice(&pdev->dev, "Using SWNCQ mode\n");
2347 ppi[0] = &nv_port_info[type];
2348 ipriv = ppi[0]->private_data;
2349 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
2353 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
2357 host->private_data = hpriv;
2359 /* request and iomap NV_MMIO_BAR */
2360 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
2364 /* configure SCR access */
2365 base = host->iomap[NV_MMIO_BAR];
2366 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
2367 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
2369 /* enable SATA space for CK804 */
2370 if (type >= CK804) {
2373 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2374 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2375 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2380 rc = nv_adma_host_init(host);
2383 } else if (type == SWNCQ)
2384 nv_swncq_host_init(host);
2387 dev_notice(&pdev->dev, "Using MSI\n");
2388 pci_enable_msi(pdev);
2391 pci_set_master(pdev);
2392 return ata_pci_sff_activate_host(host, ipriv->irq_handler, ipriv->sht);
2395 #ifdef CONFIG_PM_SLEEP
2396 static int nv_pci_device_resume(struct pci_dev *pdev)
2398 struct ata_host *host = pci_get_drvdata(pdev);
2399 struct nv_host_priv *hpriv = host->private_data;
2402 rc = ata_pci_device_do_resume(pdev);
2406 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2407 if (hpriv->type >= CK804) {
2410 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2411 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2412 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2414 if (hpriv->type == ADMA) {
2416 struct nv_adma_port_priv *pp;
2417 /* enable/disable ADMA on the ports appropriately */
2418 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2420 pp = host->ports[0]->private_data;
2421 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2422 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2423 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2425 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
2426 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2427 pp = host->ports[1]->private_data;
2428 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2429 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
2430 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2432 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
2433 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2435 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2439 ata_host_resume(host);
2445 static void nv_ck804_host_stop(struct ata_host *host)
2447 struct pci_dev *pdev = to_pci_dev(host->dev);
2450 /* disable SATA space for CK804 */
2451 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2452 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2453 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2456 static void nv_adma_host_stop(struct ata_host *host)
2458 struct pci_dev *pdev = to_pci_dev(host->dev);
2461 /* disable ADMA on the ports */
2462 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2463 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2464 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
2465 NV_MCP_SATA_CFG_20_PORT1_EN |
2466 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2468 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2470 nv_ck804_host_stop(host);
2473 module_pci_driver(nv_pci_driver);
2475 module_param_named(adma, adma_enabled, bool, 0444);
2476 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: false)");
2477 module_param_named(swncq, swncq_enabled, bool, 0444);
2478 MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");
2479 module_param_named(msi, msi_enabled, bool, 0444);
2480 MODULE_PARM_DESC(msi, "Enable use of MSI (Default: false)");