2 * sata_nv.c - NVIDIA nForce SATA
4 * Copyright 2004 NVIDIA Corp. All rights reserved.
5 * Copyright 2004 Andrew Chew
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING. If not, write to
20 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
23 * libata documentation is available via 'make {ps|pdf}docs',
24 * as Documentation/DocBook/libata.*
26 * No hardware documentation available outside of NVIDIA.
27 * This driver programs the NVIDIA SATA controller in a similar
28 * fashion as with other PCI IDE BMDMA controllers, with a few
29 * NV-specific details such as register offsets, SATA phy location,
32 * CK804/MCP04 controllers support an alternate programming interface
33 * similar to the ADMA specification (with some modifications).
34 * This allows the use of NCQ. Non-DMA-mapped ATA commands are still
35 * sent through the legacy interface.
39 #include <linux/kernel.h>
40 #include <linux/module.h>
41 #include <linux/pci.h>
42 #include <linux/init.h>
43 #include <linux/blkdev.h>
44 #include <linux/delay.h>
45 #include <linux/interrupt.h>
46 #include <linux/device.h>
47 #include <scsi/scsi_host.h>
48 #include <scsi/scsi_device.h>
49 #include <linux/libata.h>
51 #define DRV_NAME "sata_nv"
52 #define DRV_VERSION "3.5"
54 #define NV_ADMA_DMA_BOUNDARY 0xffffffffUL
63 NV_PORT0_SCR_REG_OFFSET = 0x00,
64 NV_PORT1_SCR_REG_OFFSET = 0x40,
66 /* INT_STATUS/ENABLE */
69 NV_INT_STATUS_CK804 = 0x440,
70 NV_INT_ENABLE_CK804 = 0x441,
72 /* INT_STATUS/ENABLE bits */
76 NV_INT_REMOVED = 0x08,
78 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
81 NV_INT_MASK = NV_INT_DEV |
82 NV_INT_ADDED | NV_INT_REMOVED,
86 NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI
88 // For PCI config register 20
89 NV_MCP_SATA_CFG_20 = 0x50,
90 NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04,
91 NV_MCP_SATA_CFG_20_PORT0_EN = (1 << 17),
92 NV_MCP_SATA_CFG_20_PORT1_EN = (1 << 16),
93 NV_MCP_SATA_CFG_20_PORT0_PWB_EN = (1 << 14),
94 NV_MCP_SATA_CFG_20_PORT1_PWB_EN = (1 << 12),
96 NV_ADMA_MAX_CPBS = 32,
99 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
101 NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5,
102 NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ,
103 NV_ADMA_PORT_PRIV_DMA_SZ = NV_ADMA_MAX_CPBS *
104 (NV_ADMA_CPB_SZ + NV_ADMA_SGTBL_SZ),
106 /* BAR5 offset to ADMA general registers */
108 NV_ADMA_GEN_CTL = 0x00,
109 NV_ADMA_NOTIFIER_CLEAR = 0x30,
111 /* BAR5 offset to ADMA ports */
112 NV_ADMA_PORT = 0x480,
114 /* size of ADMA port register space */
115 NV_ADMA_PORT_SIZE = 0x100,
117 /* ADMA port registers */
119 NV_ADMA_CPB_COUNT = 0x42,
120 NV_ADMA_NEXT_CPB_IDX = 0x43,
122 NV_ADMA_CPB_BASE_LOW = 0x48,
123 NV_ADMA_CPB_BASE_HIGH = 0x4C,
124 NV_ADMA_APPEND = 0x50,
125 NV_ADMA_NOTIFIER = 0x68,
126 NV_ADMA_NOTIFIER_ERROR = 0x6C,
128 /* NV_ADMA_CTL register bits */
129 NV_ADMA_CTL_HOTPLUG_IEN = (1 << 0),
130 NV_ADMA_CTL_CHANNEL_RESET = (1 << 5),
131 NV_ADMA_CTL_GO = (1 << 7),
132 NV_ADMA_CTL_AIEN = (1 << 8),
133 NV_ADMA_CTL_READ_NON_COHERENT = (1 << 11),
134 NV_ADMA_CTL_WRITE_NON_COHERENT = (1 << 12),
136 /* CPB response flag bits */
137 NV_CPB_RESP_DONE = (1 << 0),
138 NV_CPB_RESP_ATA_ERR = (1 << 3),
139 NV_CPB_RESP_CMD_ERR = (1 << 4),
140 NV_CPB_RESP_CPB_ERR = (1 << 7),
142 /* CPB control flag bits */
143 NV_CPB_CTL_CPB_VALID = (1 << 0),
144 NV_CPB_CTL_QUEUE = (1 << 1),
145 NV_CPB_CTL_APRD_VALID = (1 << 2),
146 NV_CPB_CTL_IEN = (1 << 3),
147 NV_CPB_CTL_FPDMA = (1 << 4),
150 NV_APRD_WRITE = (1 << 1),
151 NV_APRD_END = (1 << 2),
152 NV_APRD_CONT = (1 << 3),
154 /* NV_ADMA_STAT flags */
155 NV_ADMA_STAT_TIMEOUT = (1 << 0),
156 NV_ADMA_STAT_HOTUNPLUG = (1 << 1),
157 NV_ADMA_STAT_HOTPLUG = (1 << 2),
158 NV_ADMA_STAT_CPBERR = (1 << 4),
159 NV_ADMA_STAT_SERROR = (1 << 5),
160 NV_ADMA_STAT_CMD_COMPLETE = (1 << 6),
161 NV_ADMA_STAT_IDLE = (1 << 8),
162 NV_ADMA_STAT_LEGACY = (1 << 9),
163 NV_ADMA_STAT_STOPPED = (1 << 10),
164 NV_ADMA_STAT_DONE = (1 << 12),
165 NV_ADMA_STAT_ERR = NV_ADMA_STAT_CPBERR |
166 NV_ADMA_STAT_TIMEOUT,
169 NV_ADMA_PORT_REGISTER_MODE = (1 << 0),
170 NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1),
172 /* MCP55 reg offset */
173 NV_CTL_MCP55 = 0x400,
174 NV_INT_STATUS_MCP55 = 0x440,
175 NV_INT_ENABLE_MCP55 = 0x444,
176 NV_NCQ_REG_MCP55 = 0x448,
179 NV_INT_ALL_MCP55 = 0xffff,
180 NV_INT_PORT_SHIFT_MCP55 = 16, /* each port occupies 16 bits */
181 NV_INT_MASK_MCP55 = NV_INT_ALL_MCP55 & 0xfffd,
183 /* SWNCQ ENABLE BITS*/
184 NV_CTL_PRI_SWNCQ = 0x02,
185 NV_CTL_SEC_SWNCQ = 0x04,
187 /* SW NCQ status bits*/
188 NV_SWNCQ_IRQ_DEV = (1 << 0),
189 NV_SWNCQ_IRQ_PM = (1 << 1),
190 NV_SWNCQ_IRQ_ADDED = (1 << 2),
191 NV_SWNCQ_IRQ_REMOVED = (1 << 3),
193 NV_SWNCQ_IRQ_BACKOUT = (1 << 4),
194 NV_SWNCQ_IRQ_SDBFIS = (1 << 5),
195 NV_SWNCQ_IRQ_DHREGFIS = (1 << 6),
196 NV_SWNCQ_IRQ_DMASETUP = (1 << 7),
198 NV_SWNCQ_IRQ_HOTPLUG = NV_SWNCQ_IRQ_ADDED |
199 NV_SWNCQ_IRQ_REMOVED,
203 /* ADMA Physical Region Descriptor - one SG segment */
212 enum nv_adma_regbits {
213 CMDEND = (1 << 15), /* end of command list */
214 WNB = (1 << 14), /* wait-not-BSY */
215 IGN = (1 << 13), /* ignore this entry */
216 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
217 DA2 = (1 << (2 + 8)),
218 DA1 = (1 << (1 + 8)),
219 DA0 = (1 << (0 + 8)),
222 /* ADMA Command Parameter Block
223 The first 5 SG segments are stored inside the Command Parameter Block itself.
224 If there are more than 5 segments the remainder are stored in a separate
225 memory area indicated by next_aprd. */
227 u8 resp_flags; /* 0 */
228 u8 reserved1; /* 1 */
229 u8 ctl_flags; /* 2 */
230 /* len is length of taskfile in 64 bit words */
233 u8 next_cpb_idx; /* 5 */
234 __le16 reserved2; /* 6-7 */
235 __le16 tf[12]; /* 8-31 */
236 struct nv_adma_prd aprd[5]; /* 32-111 */
237 __le64 next_aprd; /* 112-119 */
238 __le64 reserved3; /* 120-127 */
242 struct nv_adma_port_priv {
243 struct nv_adma_cpb *cpb;
245 struct nv_adma_prd *aprd;
247 void __iomem *ctl_block;
248 void __iomem *gen_block;
249 void __iomem *notifier_clear_block;
255 struct nv_host_priv {
263 unsigned int tag[ATA_MAX_QUEUE];
266 enum ncq_saw_flag_list {
267 ncq_saw_d2h = (1U << 0),
268 ncq_saw_dmas = (1U << 1),
269 ncq_saw_sdb = (1U << 2),
270 ncq_saw_backout = (1U << 3),
273 struct nv_swncq_port_priv {
274 struct ata_prd *prd; /* our SG list */
275 dma_addr_t prd_dma; /* and its DMA mapping */
276 void __iomem *sactive_block;
277 void __iomem *irq_block;
278 void __iomem *tag_block;
281 unsigned int last_issue_tag;
283 /* fifo circular queue to store deferral command */
284 struct defer_queue defer_queue;
286 /* for NCQ interrupt analysis */
291 unsigned int ncq_flags;
295 #define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & (1 << (19 + (12 * (PORT)))))
297 static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
299 static int nv_pci_device_resume(struct pci_dev *pdev);
301 static void nv_ck804_host_stop(struct ata_host *host);
302 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
303 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
304 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
305 static int nv_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
306 static int nv_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
308 static void nv_nf2_freeze(struct ata_port *ap);
309 static void nv_nf2_thaw(struct ata_port *ap);
310 static void nv_ck804_freeze(struct ata_port *ap);
311 static void nv_ck804_thaw(struct ata_port *ap);
312 static int nv_hardreset(struct ata_link *link, unsigned int *class,
313 unsigned long deadline);
314 static int nv_adma_slave_config(struct scsi_device *sdev);
315 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
316 static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
317 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
318 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
319 static void nv_adma_irq_clear(struct ata_port *ap);
320 static int nv_adma_port_start(struct ata_port *ap);
321 static void nv_adma_port_stop(struct ata_port *ap);
323 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
324 static int nv_adma_port_resume(struct ata_port *ap);
326 static void nv_adma_freeze(struct ata_port *ap);
327 static void nv_adma_thaw(struct ata_port *ap);
328 static void nv_adma_error_handler(struct ata_port *ap);
329 static void nv_adma_host_stop(struct ata_host *host);
330 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
331 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
333 static void nv_mcp55_thaw(struct ata_port *ap);
334 static void nv_mcp55_freeze(struct ata_port *ap);
335 static void nv_swncq_error_handler(struct ata_port *ap);
336 static int nv_swncq_slave_config(struct scsi_device *sdev);
337 static int nv_swncq_port_start(struct ata_port *ap);
338 static void nv_swncq_qc_prep(struct ata_queued_cmd *qc);
339 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc);
340 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc);
341 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis);
342 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance);
344 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg);
345 static int nv_swncq_port_resume(struct ata_port *ap);
352 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
358 static const struct pci_device_id nv_pci_tbl[] = {
359 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
360 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
361 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
362 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
363 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
364 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
365 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
366 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), SWNCQ },
367 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), SWNCQ },
368 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), SWNCQ },
369 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), SWNCQ },
370 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
371 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
372 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
374 { } /* terminate list */
377 static struct pci_driver nv_pci_driver = {
379 .id_table = nv_pci_tbl,
380 .probe = nv_init_one,
382 .suspend = ata_pci_device_suspend,
383 .resume = nv_pci_device_resume,
385 .remove = ata_pci_remove_one,
388 static struct scsi_host_template nv_sht = {
389 ATA_BMDMA_SHT(DRV_NAME),
392 static struct scsi_host_template nv_adma_sht = {
393 ATA_NCQ_SHT(DRV_NAME),
394 .can_queue = NV_ADMA_MAX_CPBS,
395 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
396 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
397 .slave_configure = nv_adma_slave_config,
400 static struct scsi_host_template nv_swncq_sht = {
401 ATA_NCQ_SHT(DRV_NAME),
402 .can_queue = ATA_MAX_QUEUE,
403 .sg_tablesize = LIBATA_MAX_PRD,
404 .dma_boundary = ATA_DMA_BOUNDARY,
405 .slave_configure = nv_swncq_slave_config,
408 static struct ata_port_operations nv_generic_ops = {
409 .inherits = &ata_bmdma_port_ops,
410 .hardreset = nv_hardreset,
411 .scr_read = nv_scr_read,
412 .scr_write = nv_scr_write,
415 static struct ata_port_operations nv_nf2_ops = {
416 .inherits = &nv_generic_ops,
417 .freeze = nv_nf2_freeze,
421 static struct ata_port_operations nv_ck804_ops = {
422 .inherits = &nv_generic_ops,
423 .freeze = nv_ck804_freeze,
424 .thaw = nv_ck804_thaw,
425 .host_stop = nv_ck804_host_stop,
428 static struct ata_port_operations nv_adma_ops = {
429 .inherits = &nv_generic_ops,
431 .check_atapi_dma = nv_adma_check_atapi_dma,
432 .sff_tf_read = nv_adma_tf_read,
433 .qc_defer = ata_std_qc_defer,
434 .qc_prep = nv_adma_qc_prep,
435 .qc_issue = nv_adma_qc_issue,
436 .sff_irq_clear = nv_adma_irq_clear,
438 .freeze = nv_adma_freeze,
439 .thaw = nv_adma_thaw,
440 .error_handler = nv_adma_error_handler,
441 .post_internal_cmd = nv_adma_post_internal_cmd,
443 .port_start = nv_adma_port_start,
444 .port_stop = nv_adma_port_stop,
446 .port_suspend = nv_adma_port_suspend,
447 .port_resume = nv_adma_port_resume,
449 .host_stop = nv_adma_host_stop,
452 static struct ata_port_operations nv_swncq_ops = {
453 .inherits = &nv_generic_ops,
455 .qc_defer = ata_std_qc_defer,
456 .qc_prep = nv_swncq_qc_prep,
457 .qc_issue = nv_swncq_qc_issue,
459 .freeze = nv_mcp55_freeze,
460 .thaw = nv_mcp55_thaw,
461 .error_handler = nv_swncq_error_handler,
464 .port_suspend = nv_swncq_port_suspend,
465 .port_resume = nv_swncq_port_resume,
467 .port_start = nv_swncq_port_start,
471 irq_handler_t irq_handler;
472 struct scsi_host_template *sht;
475 #define NV_PI_PRIV(_irq_handler, _sht) \
476 &(struct nv_pi_priv){ .irq_handler = _irq_handler, .sht = _sht }
478 static const struct ata_port_info nv_port_info[] = {
481 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
482 .pio_mask = NV_PIO_MASK,
483 .mwdma_mask = NV_MWDMA_MASK,
484 .udma_mask = NV_UDMA_MASK,
485 .port_ops = &nv_generic_ops,
486 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
490 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
491 .pio_mask = NV_PIO_MASK,
492 .mwdma_mask = NV_MWDMA_MASK,
493 .udma_mask = NV_UDMA_MASK,
494 .port_ops = &nv_nf2_ops,
495 .private_data = NV_PI_PRIV(nv_nf2_interrupt, &nv_sht),
499 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
500 .pio_mask = NV_PIO_MASK,
501 .mwdma_mask = NV_MWDMA_MASK,
502 .udma_mask = NV_UDMA_MASK,
503 .port_ops = &nv_ck804_ops,
504 .private_data = NV_PI_PRIV(nv_ck804_interrupt, &nv_sht),
508 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
509 ATA_FLAG_MMIO | ATA_FLAG_NCQ,
510 .pio_mask = NV_PIO_MASK,
511 .mwdma_mask = NV_MWDMA_MASK,
512 .udma_mask = NV_UDMA_MASK,
513 .port_ops = &nv_adma_ops,
514 .private_data = NV_PI_PRIV(nv_adma_interrupt, &nv_adma_sht),
518 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
520 .pio_mask = NV_PIO_MASK,
521 .mwdma_mask = NV_MWDMA_MASK,
522 .udma_mask = NV_UDMA_MASK,
523 .port_ops = &nv_swncq_ops,
524 .private_data = NV_PI_PRIV(nv_swncq_interrupt, &nv_swncq_sht),
528 MODULE_AUTHOR("NVIDIA");
529 MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
530 MODULE_LICENSE("GPL");
531 MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
532 MODULE_VERSION(DRV_VERSION);
534 static int adma_enabled;
535 static int swncq_enabled = 1;
537 static void nv_adma_register_mode(struct ata_port *ap)
539 struct nv_adma_port_priv *pp = ap->private_data;
540 void __iomem *mmio = pp->ctl_block;
544 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
547 status = readw(mmio + NV_ADMA_STAT);
548 while (!(status & NV_ADMA_STAT_IDLE) && count < 20) {
550 status = readw(mmio + NV_ADMA_STAT);
554 ata_port_printk(ap, KERN_WARNING,
555 "timeout waiting for ADMA IDLE, stat=0x%hx\n",
558 tmp = readw(mmio + NV_ADMA_CTL);
559 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
562 status = readw(mmio + NV_ADMA_STAT);
563 while (!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
565 status = readw(mmio + NV_ADMA_STAT);
569 ata_port_printk(ap, KERN_WARNING,
570 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
573 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
576 static void nv_adma_mode(struct ata_port *ap)
578 struct nv_adma_port_priv *pp = ap->private_data;
579 void __iomem *mmio = pp->ctl_block;
583 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
586 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
588 tmp = readw(mmio + NV_ADMA_CTL);
589 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
591 status = readw(mmio + NV_ADMA_STAT);
592 while (((status & NV_ADMA_STAT_LEGACY) ||
593 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
595 status = readw(mmio + NV_ADMA_STAT);
599 ata_port_printk(ap, KERN_WARNING,
600 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
603 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
606 static int nv_adma_slave_config(struct scsi_device *sdev)
608 struct ata_port *ap = ata_shost_to_port(sdev->host);
609 struct nv_adma_port_priv *pp = ap->private_data;
610 struct nv_adma_port_priv *port0, *port1;
611 struct scsi_device *sdev0, *sdev1;
612 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
613 unsigned long segment_boundary, flags;
614 unsigned short sg_tablesize;
617 u32 current_reg, new_reg, config_mask;
619 rc = ata_scsi_slave_config(sdev);
621 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
622 /* Not a proper libata device, ignore */
625 spin_lock_irqsave(ap->lock, flags);
627 if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) {
629 * NVIDIA reports that ADMA mode does not support ATAPI commands.
630 * Therefore ATAPI commands are sent through the legacy interface.
631 * However, the legacy interface only supports 32-bit DMA.
632 * Restrict DMA parameters as required by the legacy interface
633 * when an ATAPI device is connected.
635 segment_boundary = ATA_DMA_BOUNDARY;
636 /* Subtract 1 since an extra entry may be needed for padding, see
638 sg_tablesize = LIBATA_MAX_PRD - 1;
640 /* Since the legacy DMA engine is in use, we need to disable ADMA
643 nv_adma_register_mode(ap);
645 segment_boundary = NV_ADMA_DMA_BOUNDARY;
646 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
650 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, ¤t_reg);
652 if (ap->port_no == 1)
653 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
654 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
656 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
657 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
660 new_reg = current_reg | config_mask;
661 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
663 new_reg = current_reg & ~config_mask;
664 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
667 if (current_reg != new_reg)
668 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
670 port0 = ap->host->ports[0]->private_data;
671 port1 = ap->host->ports[1]->private_data;
672 sdev0 = ap->host->ports[0]->link.device[0].sdev;
673 sdev1 = ap->host->ports[1]->link.device[0].sdev;
674 if ((port0->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
675 (port1->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)) {
676 /** We have to set the DMA mask to 32-bit if either port is in
677 ATAPI mode, since they are on the same PCI device which is
678 used for DMA mapping. If we set the mask we also need to set
679 the bounce limit on both ports to ensure that the block
680 layer doesn't feed addresses that cause DMA mapping to
681 choke. If either SCSI device is not allocated yet, it's OK
682 since that port will discover its correct setting when it
684 Note: Setting 32-bit mask should not fail. */
686 blk_queue_bounce_limit(sdev0->request_queue,
689 blk_queue_bounce_limit(sdev1->request_queue,
692 pci_set_dma_mask(pdev, ATA_DMA_MASK);
694 /** This shouldn't fail as it was set to this value before */
695 pci_set_dma_mask(pdev, pp->adma_dma_mask);
697 blk_queue_bounce_limit(sdev0->request_queue,
700 blk_queue_bounce_limit(sdev1->request_queue,
704 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
705 blk_queue_max_hw_segments(sdev->request_queue, sg_tablesize);
706 ata_port_printk(ap, KERN_INFO,
707 "DMA mask 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
708 (unsigned long long)*ap->host->dev->dma_mask,
709 segment_boundary, sg_tablesize);
711 spin_unlock_irqrestore(ap->lock, flags);
716 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
718 struct nv_adma_port_priv *pp = qc->ap->private_data;
719 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
722 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
724 /* Other than when internal or pass-through commands are executed,
725 the only time this function will be called in ADMA mode will be
726 if a command fails. In the failure case we don't care about going
727 into register mode with ADMA commands pending, as the commands will
728 all shortly be aborted anyway. We assume that NCQ commands are not
729 issued via passthrough, which is the only way that switching into
730 ADMA mode could abort outstanding commands. */
731 nv_adma_register_mode(ap);
733 ata_sff_tf_read(ap, tf);
736 static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
738 unsigned int idx = 0;
740 if (tf->flags & ATA_TFLAG_ISADDR) {
741 if (tf->flags & ATA_TFLAG_LBA48) {
742 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
743 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
744 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
745 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
746 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
747 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
749 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
751 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
752 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
753 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
754 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
757 if (tf->flags & ATA_TFLAG_DEVICE)
758 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
760 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
763 cpb[idx++] = cpu_to_le16(IGN);
768 static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
770 struct nv_adma_port_priv *pp = ap->private_data;
771 u8 flags = pp->cpb[cpb_num].resp_flags;
773 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
775 if (unlikely((force_err ||
776 flags & (NV_CPB_RESP_ATA_ERR |
777 NV_CPB_RESP_CMD_ERR |
778 NV_CPB_RESP_CPB_ERR)))) {
779 struct ata_eh_info *ehi = &ap->link.eh_info;
782 ata_ehi_clear_desc(ehi);
783 __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags);
784 if (flags & NV_CPB_RESP_ATA_ERR) {
785 ata_ehi_push_desc(ehi, "ATA error");
786 ehi->err_mask |= AC_ERR_DEV;
787 } else if (flags & NV_CPB_RESP_CMD_ERR) {
788 ata_ehi_push_desc(ehi, "CMD error");
789 ehi->err_mask |= AC_ERR_DEV;
790 } else if (flags & NV_CPB_RESP_CPB_ERR) {
791 ata_ehi_push_desc(ehi, "CPB error");
792 ehi->err_mask |= AC_ERR_SYSTEM;
795 /* notifier error, but no error in CPB flags? */
796 ata_ehi_push_desc(ehi, "unknown");
797 ehi->err_mask |= AC_ERR_OTHER;
800 /* Kill all commands. EH will determine what actually failed. */
808 if (likely(flags & NV_CPB_RESP_DONE)) {
809 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num);
810 VPRINTK("CPB flags done, flags=0x%x\n", flags);
812 DPRINTK("Completing qc from tag %d\n", cpb_num);
815 struct ata_eh_info *ehi = &ap->link.eh_info;
816 /* Notifier bits set without a command may indicate the drive
817 is misbehaving. Raise host state machine violation on this
819 ata_port_printk(ap, KERN_ERR,
820 "notifier for tag %d with no cmd?\n",
822 ehi->err_mask |= AC_ERR_HSM;
823 ehi->action |= ATA_EH_RESET;
831 static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
833 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
835 /* freeze if hotplugged */
836 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
841 /* bail out if not our interrupt */
842 if (!(irq_stat & NV_INT_DEV))
845 /* DEV interrupt w/ no active qc? */
846 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
847 ata_sff_check_status(ap);
851 /* handle interrupt */
852 return ata_sff_host_intr(ap, qc);
855 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
857 struct ata_host *host = dev_instance;
859 u32 notifier_clears[2];
861 spin_lock(&host->lock);
863 for (i = 0; i < host->n_ports; i++) {
864 struct ata_port *ap = host->ports[i];
865 notifier_clears[i] = 0;
867 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
868 struct nv_adma_port_priv *pp = ap->private_data;
869 void __iomem *mmio = pp->ctl_block;
872 u32 notifier, notifier_error;
874 /* if ADMA is disabled, use standard ata interrupt handler */
875 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
876 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
877 >> (NV_INT_PORT_SHIFT * i);
878 handled += nv_host_intr(ap, irq_stat);
882 /* if in ATA register mode, check for standard interrupts */
883 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
884 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
885 >> (NV_INT_PORT_SHIFT * i);
886 if (ata_tag_valid(ap->link.active_tag))
887 /** NV_INT_DEV indication seems unreliable at times
888 at least in ADMA mode. Force it on always when a
889 command is active, to prevent losing interrupts. */
890 irq_stat |= NV_INT_DEV;
891 handled += nv_host_intr(ap, irq_stat);
894 notifier = readl(mmio + NV_ADMA_NOTIFIER);
895 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
896 notifier_clears[i] = notifier | notifier_error;
898 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
900 if (!NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
905 status = readw(mmio + NV_ADMA_STAT);
907 /* Clear status. Ensure the controller sees the clearing before we start
908 looking at any of the CPB statuses, so that any CPB completions after
909 this point in the handler will raise another interrupt. */
910 writew(status, mmio + NV_ADMA_STAT);
911 readw(mmio + NV_ADMA_STAT); /* flush posted write */
914 handled++; /* irq handled if we got here */
916 /* freeze if hotplugged or controller error */
917 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
918 NV_ADMA_STAT_HOTUNPLUG |
919 NV_ADMA_STAT_TIMEOUT |
920 NV_ADMA_STAT_SERROR))) {
921 struct ata_eh_info *ehi = &ap->link.eh_info;
923 ata_ehi_clear_desc(ehi);
924 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status);
925 if (status & NV_ADMA_STAT_TIMEOUT) {
926 ehi->err_mask |= AC_ERR_SYSTEM;
927 ata_ehi_push_desc(ehi, "timeout");
928 } else if (status & NV_ADMA_STAT_HOTPLUG) {
929 ata_ehi_hotplugged(ehi);
930 ata_ehi_push_desc(ehi, "hotplug");
931 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
932 ata_ehi_hotplugged(ehi);
933 ata_ehi_push_desc(ehi, "hot unplug");
934 } else if (status & NV_ADMA_STAT_SERROR) {
935 /* let libata analyze SError and figure out the cause */
936 ata_ehi_push_desc(ehi, "SError");
938 ata_ehi_push_desc(ehi, "unknown");
943 if (status & (NV_ADMA_STAT_DONE |
944 NV_ADMA_STAT_CPBERR |
945 NV_ADMA_STAT_CMD_COMPLETE)) {
946 u32 check_commands = notifier_clears[i];
949 if (status & NV_ADMA_STAT_CPBERR) {
950 /* Check all active commands */
951 if (ata_tag_valid(ap->link.active_tag))
952 check_commands = 1 <<
955 check_commands = ap->
959 /** Check CPBs for completed commands */
960 while ((pos = ffs(check_commands)) && !error) {
962 error = nv_adma_check_cpb(ap, pos,
963 notifier_error & (1 << pos));
964 check_commands &= ~(1 << pos);
970 if (notifier_clears[0] || notifier_clears[1]) {
971 /* Note: Both notifier clear registers must be written
972 if either is set, even if one is zero, according to NVIDIA. */
973 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
974 writel(notifier_clears[0], pp->notifier_clear_block);
975 pp = host->ports[1]->private_data;
976 writel(notifier_clears[1], pp->notifier_clear_block);
979 spin_unlock(&host->lock);
981 return IRQ_RETVAL(handled);
984 static void nv_adma_freeze(struct ata_port *ap)
986 struct nv_adma_port_priv *pp = ap->private_data;
987 void __iomem *mmio = pp->ctl_block;
992 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
995 /* clear any outstanding CK804 notifications */
996 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
997 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
999 /* Disable interrupt */
1000 tmp = readw(mmio + NV_ADMA_CTL);
1001 writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
1002 mmio + NV_ADMA_CTL);
1003 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1006 static void nv_adma_thaw(struct ata_port *ap)
1008 struct nv_adma_port_priv *pp = ap->private_data;
1009 void __iomem *mmio = pp->ctl_block;
1014 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1017 /* Enable interrupt */
1018 tmp = readw(mmio + NV_ADMA_CTL);
1019 writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
1020 mmio + NV_ADMA_CTL);
1021 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1024 static void nv_adma_irq_clear(struct ata_port *ap)
1026 struct nv_adma_port_priv *pp = ap->private_data;
1027 void __iomem *mmio = pp->ctl_block;
1028 u32 notifier_clears[2];
1030 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
1031 ata_sff_irq_clear(ap);
1035 /* clear any outstanding CK804 notifications */
1036 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
1037 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1039 /* clear ADMA status */
1040 writew(0xffff, mmio + NV_ADMA_STAT);
1042 /* clear notifiers - note both ports need to be written with
1043 something even though we are only clearing on one */
1044 if (ap->port_no == 0) {
1045 notifier_clears[0] = 0xFFFFFFFF;
1046 notifier_clears[1] = 0;
1048 notifier_clears[0] = 0;
1049 notifier_clears[1] = 0xFFFFFFFF;
1051 pp = ap->host->ports[0]->private_data;
1052 writel(notifier_clears[0], pp->notifier_clear_block);
1053 pp = ap->host->ports[1]->private_data;
1054 writel(notifier_clears[1], pp->notifier_clear_block);
1057 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
1059 struct nv_adma_port_priv *pp = qc->ap->private_data;
1061 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
1062 ata_sff_post_internal_cmd(qc);
1065 static int nv_adma_port_start(struct ata_port *ap)
1067 struct device *dev = ap->host->dev;
1068 struct nv_adma_port_priv *pp;
1073 struct pci_dev *pdev = to_pci_dev(dev);
1078 /* Ensure DMA mask is set to 32-bit before allocating legacy PRD and
1080 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1083 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1087 rc = ata_port_start(ap);
1091 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1095 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
1096 ap->port_no * NV_ADMA_PORT_SIZE;
1097 pp->ctl_block = mmio;
1098 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
1099 pp->notifier_clear_block = pp->gen_block +
1100 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1102 /* Now that the legacy PRD and padding buffer are allocated we can
1103 safely raise the DMA mask to allocate the CPB/APRD table.
1104 These are allowed to fail since we store the value that ends up
1105 being used to set as the bounce limit in slave_config later if
1107 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1108 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1109 pp->adma_dma_mask = *dev->dma_mask;
1111 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1112 &mem_dma, GFP_KERNEL);
1115 memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ);
1118 * First item in chunk of DMA memory:
1119 * 128-byte command parameter block (CPB)
1120 * one for each command tag
1123 pp->cpb_dma = mem_dma;
1125 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1126 writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1128 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1129 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1132 * Second item: block of ADMA_SGTBL_LEN s/g entries
1135 pp->aprd_dma = mem_dma;
1137 ap->private_data = pp;
1139 /* clear any outstanding interrupt conditions */
1140 writew(0xffff, mmio + NV_ADMA_STAT);
1142 /* initialize port variables */
1143 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1145 /* clear CPB fetch count */
1146 writew(0, mmio + NV_ADMA_CPB_COUNT);
1148 /* clear GO for register mode, enable interrupt */
1149 tmp = readw(mmio + NV_ADMA_CTL);
1150 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1151 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1153 tmp = readw(mmio + NV_ADMA_CTL);
1154 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1155 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1157 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1158 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1163 static void nv_adma_port_stop(struct ata_port *ap)
1165 struct nv_adma_port_priv *pp = ap->private_data;
1166 void __iomem *mmio = pp->ctl_block;
1169 writew(0, mmio + NV_ADMA_CTL);
1173 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1175 struct nv_adma_port_priv *pp = ap->private_data;
1176 void __iomem *mmio = pp->ctl_block;
1178 /* Go to register mode - clears GO */
1179 nv_adma_register_mode(ap);
1181 /* clear CPB fetch count */
1182 writew(0, mmio + NV_ADMA_CPB_COUNT);
1184 /* disable interrupt, shut down port */
1185 writew(0, mmio + NV_ADMA_CTL);
1190 static int nv_adma_port_resume(struct ata_port *ap)
1192 struct nv_adma_port_priv *pp = ap->private_data;
1193 void __iomem *mmio = pp->ctl_block;
1196 /* set CPB block location */
1197 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1198 writel((pp->cpb_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1200 /* clear any outstanding interrupt conditions */
1201 writew(0xffff, mmio + NV_ADMA_STAT);
1203 /* initialize port variables */
1204 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1206 /* clear CPB fetch count */
1207 writew(0, mmio + NV_ADMA_CPB_COUNT);
1209 /* clear GO for register mode, enable interrupt */
1210 tmp = readw(mmio + NV_ADMA_CTL);
1211 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1212 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1214 tmp = readw(mmio + NV_ADMA_CTL);
1215 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1216 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1218 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1219 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1225 static void nv_adma_setup_port(struct ata_port *ap)
1227 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1228 struct ata_ioports *ioport = &ap->ioaddr;
1232 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
1234 ioport->cmd_addr = mmio;
1235 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
1236 ioport->error_addr =
1237 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1238 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1239 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1240 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1241 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1242 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
1243 ioport->status_addr =
1244 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
1245 ioport->altstatus_addr =
1246 ioport->ctl_addr = mmio + 0x20;
1249 static int nv_adma_host_init(struct ata_host *host)
1251 struct pci_dev *pdev = to_pci_dev(host->dev);
1257 /* enable ADMA on the ports */
1258 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1259 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1260 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1261 NV_MCP_SATA_CFG_20_PORT1_EN |
1262 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1264 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1266 for (i = 0; i < host->n_ports; i++)
1267 nv_adma_setup_port(host->ports[i]);
1272 static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1273 struct scatterlist *sg,
1275 struct nv_adma_prd *aprd)
1278 if (qc->tf.flags & ATA_TFLAG_WRITE)
1279 flags |= NV_APRD_WRITE;
1280 if (idx == qc->n_elem - 1)
1281 flags |= NV_APRD_END;
1283 flags |= NV_APRD_CONT;
1285 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1286 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
1287 aprd->flags = flags;
1288 aprd->packet_len = 0;
1291 static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1293 struct nv_adma_port_priv *pp = qc->ap->private_data;
1294 struct nv_adma_prd *aprd;
1295 struct scatterlist *sg;
1300 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1301 aprd = (si < 5) ? &cpb->aprd[si] :
1302 &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (si-5)];
1303 nv_adma_fill_aprd(qc, sg, si, aprd);
1306 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag)));
1308 cpb->next_aprd = cpu_to_le64(0);
1311 static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1313 struct nv_adma_port_priv *pp = qc->ap->private_data;
1315 /* ADMA engine can only be used for non-ATAPI DMA commands,
1316 or interrupt-driven no-data commands. */
1317 if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
1318 (qc->tf.flags & ATA_TFLAG_POLLING))
1321 if ((qc->flags & ATA_QCFLAG_DMAMAP) ||
1322 (qc->tf.protocol == ATA_PROT_NODATA))
1328 static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1330 struct nv_adma_port_priv *pp = qc->ap->private_data;
1331 struct nv_adma_cpb *cpb = &pp->cpb[qc->tag];
1332 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
1335 if (nv_adma_use_reg_mode(qc)) {
1336 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1337 (qc->flags & ATA_QCFLAG_DMAMAP));
1338 nv_adma_register_mode(qc->ap);
1339 ata_sff_qc_prep(qc);
1343 cpb->resp_flags = NV_CPB_RESP_DONE;
1350 cpb->next_cpb_idx = 0;
1352 /* turn on NCQ flags for NCQ commands */
1353 if (qc->tf.protocol == ATA_PROT_NCQ)
1354 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1356 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1358 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1360 if (qc->flags & ATA_QCFLAG_DMAMAP) {
1361 nv_adma_fill_sg(qc, cpb);
1362 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1364 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
1366 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID
1367 until we are finished filling in all of the contents */
1369 cpb->ctl_flags = ctl_flags;
1371 cpb->resp_flags = 0;
1374 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1376 struct nv_adma_port_priv *pp = qc->ap->private_data;
1377 void __iomem *mmio = pp->ctl_block;
1378 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
1382 /* We can't handle result taskfile with NCQ commands, since
1383 retrieving the taskfile switches us out of ADMA mode and would abort
1384 existing commands. */
1385 if (unlikely(qc->tf.protocol == ATA_PROT_NCQ &&
1386 (qc->flags & ATA_QCFLAG_RESULT_TF))) {
1387 ata_dev_printk(qc->dev, KERN_ERR,
1388 "NCQ w/ RESULT_TF not allowed\n");
1389 return AC_ERR_SYSTEM;
1392 if (nv_adma_use_reg_mode(qc)) {
1393 /* use ATA register mode */
1394 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
1395 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1396 (qc->flags & ATA_QCFLAG_DMAMAP));
1397 nv_adma_register_mode(qc->ap);
1398 return ata_sff_qc_issue(qc);
1400 nv_adma_mode(qc->ap);
1402 /* write append register, command tag in lower 8 bits
1403 and (number of cpbs to append -1) in top 8 bits */
1406 if (curr_ncq != pp->last_issue_ncq) {
1407 /* Seems to need some delay before switching between NCQ and
1408 non-NCQ commands, else we get command timeouts and such. */
1410 pp->last_issue_ncq = curr_ncq;
1413 writew(qc->tag, mmio + NV_ADMA_APPEND);
1415 DPRINTK("Issued tag %u\n", qc->tag);
1420 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1422 struct ata_host *host = dev_instance;
1424 unsigned int handled = 0;
1425 unsigned long flags;
1427 spin_lock_irqsave(&host->lock, flags);
1429 for (i = 0; i < host->n_ports; i++) {
1430 struct ata_port *ap;
1432 ap = host->ports[i];
1434 !(ap->flags & ATA_FLAG_DISABLED)) {
1435 struct ata_queued_cmd *qc;
1437 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1438 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
1439 handled += ata_sff_host_intr(ap, qc);
1441 // No request pending? Clear interrupt status
1442 // anyway, in case there's one pending.
1443 ap->ops->sff_check_status(ap);
1448 spin_unlock_irqrestore(&host->lock, flags);
1450 return IRQ_RETVAL(handled);
1453 static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
1457 for (i = 0; i < host->n_ports; i++) {
1458 struct ata_port *ap = host->ports[i];
1460 if (ap && !(ap->flags & ATA_FLAG_DISABLED))
1461 handled += nv_host_intr(ap, irq_stat);
1463 irq_stat >>= NV_INT_PORT_SHIFT;
1466 return IRQ_RETVAL(handled);
1469 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
1471 struct ata_host *host = dev_instance;
1475 spin_lock(&host->lock);
1476 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
1477 ret = nv_do_interrupt(host, irq_stat);
1478 spin_unlock(&host->lock);
1483 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
1485 struct ata_host *host = dev_instance;
1489 spin_lock(&host->lock);
1490 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1491 ret = nv_do_interrupt(host, irq_stat);
1492 spin_unlock(&host->lock);
1497 static int nv_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
1499 if (sc_reg > SCR_CONTROL)
1502 *val = ioread32(ap->ioaddr.scr_addr + (sc_reg * 4));
1506 static int nv_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
1508 if (sc_reg > SCR_CONTROL)
1511 iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4));
1515 static void nv_nf2_freeze(struct ata_port *ap)
1517 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1518 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1521 mask = ioread8(scr_addr + NV_INT_ENABLE);
1522 mask &= ~(NV_INT_ALL << shift);
1523 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1526 static void nv_nf2_thaw(struct ata_port *ap)
1528 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1529 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1532 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
1534 mask = ioread8(scr_addr + NV_INT_ENABLE);
1535 mask |= (NV_INT_MASK << shift);
1536 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1539 static void nv_ck804_freeze(struct ata_port *ap)
1541 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1542 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1545 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1546 mask &= ~(NV_INT_ALL << shift);
1547 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1550 static void nv_ck804_thaw(struct ata_port *ap)
1552 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1553 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1556 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1558 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1559 mask |= (NV_INT_MASK << shift);
1560 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1563 static void nv_mcp55_freeze(struct ata_port *ap)
1565 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1566 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1569 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1571 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1572 mask &= ~(NV_INT_ALL_MCP55 << shift);
1573 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1577 static void nv_mcp55_thaw(struct ata_port *ap)
1579 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1580 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1583 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1585 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1586 mask |= (NV_INT_MASK_MCP55 << shift);
1587 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
1591 static int nv_hardreset(struct ata_link *link, unsigned int *class,
1592 unsigned long deadline)
1596 /* SATA hardreset fails to retrieve proper device signature on
1597 * some controllers. Request follow up SRST. For more info,
1598 * see http://bugzilla.kernel.org/show_bug.cgi?id=3352
1600 rc = sata_sff_hardreset(link, class, deadline);
1606 static void nv_adma_error_handler(struct ata_port *ap)
1608 struct nv_adma_port_priv *pp = ap->private_data;
1609 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
1610 void __iomem *mmio = pp->ctl_block;
1614 if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
1615 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1616 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1617 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1618 u32 status = readw(mmio + NV_ADMA_STAT);
1619 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1620 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
1622 ata_port_printk(ap, KERN_ERR,
1623 "EH in ADMA mode, notifier 0x%X "
1624 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1625 "next cpb count 0x%X next cpb idx 0x%x\n",
1626 notifier, notifier_error, gen_ctl, status,
1627 cpb_count, next_cpb_idx);
1629 for (i = 0; i < NV_ADMA_MAX_CPBS; i++) {
1630 struct nv_adma_cpb *cpb = &pp->cpb[i];
1631 if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
1632 ap->link.sactive & (1 << i))
1633 ata_port_printk(ap, KERN_ERR,
1634 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1635 i, cpb->ctl_flags, cpb->resp_flags);
1639 /* Push us back into port register mode for error handling. */
1640 nv_adma_register_mode(ap);
1642 /* Mark all of the CPBs as invalid to prevent them from
1644 for (i = 0; i < NV_ADMA_MAX_CPBS; i++)
1645 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1647 /* clear CPB fetch count */
1648 writew(0, mmio + NV_ADMA_CPB_COUNT);
1651 tmp = readw(mmio + NV_ADMA_CTL);
1652 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1653 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1655 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1656 readw(mmio + NV_ADMA_CTL); /* flush posted write */
1659 ata_sff_error_handler(ap);
1662 static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc)
1664 struct nv_swncq_port_priv *pp = ap->private_data;
1665 struct defer_queue *dq = &pp->defer_queue;
1668 WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE);
1669 dq->defer_bits |= (1 << qc->tag);
1670 dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->tag;
1673 static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap)
1675 struct nv_swncq_port_priv *pp = ap->private_data;
1676 struct defer_queue *dq = &pp->defer_queue;
1679 if (dq->head == dq->tail) /* null queue */
1682 tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)];
1683 dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON;
1684 WARN_ON(!(dq->defer_bits & (1 << tag)));
1685 dq->defer_bits &= ~(1 << tag);
1687 return ata_qc_from_tag(ap, tag);
1690 static void nv_swncq_fis_reinit(struct ata_port *ap)
1692 struct nv_swncq_port_priv *pp = ap->private_data;
1695 pp->dmafis_bits = 0;
1696 pp->sdbfis_bits = 0;
1700 static void nv_swncq_pp_reinit(struct ata_port *ap)
1702 struct nv_swncq_port_priv *pp = ap->private_data;
1703 struct defer_queue *dq = &pp->defer_queue;
1709 pp->last_issue_tag = ATA_TAG_POISON;
1710 nv_swncq_fis_reinit(ap);
1713 static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis)
1715 struct nv_swncq_port_priv *pp = ap->private_data;
1717 writew(fis, pp->irq_block);
1720 static void __ata_bmdma_stop(struct ata_port *ap)
1722 struct ata_queued_cmd qc;
1725 ata_bmdma_stop(&qc);
1728 static void nv_swncq_ncq_stop(struct ata_port *ap)
1730 struct nv_swncq_port_priv *pp = ap->private_data;
1735 ata_port_printk(ap, KERN_ERR,
1736 "EH in SWNCQ mode,QC:qc_active 0x%X sactive 0x%X\n",
1737 ap->qc_active, ap->link.sactive);
1738 ata_port_printk(ap, KERN_ERR,
1739 "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n "
1740 "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n",
1741 pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag,
1742 pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits);
1744 ata_port_printk(ap, KERN_ERR, "ATA_REG 0x%X ERR_REG 0x%X\n",
1745 ap->ops->sff_check_status(ap),
1746 ioread8(ap->ioaddr.error_addr));
1748 sactive = readl(pp->sactive_block);
1749 done_mask = pp->qc_active ^ sactive;
1751 ata_port_printk(ap, KERN_ERR, "tag : dhfis dmafis sdbfis sacitve\n");
1752 for (i = 0; i < ATA_MAX_QUEUE; i++) {
1754 if (pp->qc_active & (1 << i))
1756 else if (done_mask & (1 << i))
1761 ata_port_printk(ap, KERN_ERR,
1762 "tag 0x%x: %01x %01x %01x %01x %s\n", i,
1763 (pp->dhfis_bits >> i) & 0x1,
1764 (pp->dmafis_bits >> i) & 0x1,
1765 (pp->sdbfis_bits >> i) & 0x1,
1766 (sactive >> i) & 0x1,
1767 (err ? "error! tag doesn't exit" : " "));
1770 nv_swncq_pp_reinit(ap);
1771 ap->ops->sff_irq_clear(ap);
1772 __ata_bmdma_stop(ap);
1773 nv_swncq_irq_clear(ap, 0xffff);
1776 static void nv_swncq_error_handler(struct ata_port *ap)
1778 struct ata_eh_context *ehc = &ap->link.eh_context;
1780 if (ap->link.sactive) {
1781 nv_swncq_ncq_stop(ap);
1782 ehc->i.action |= ATA_EH_RESET;
1785 ata_sff_error_handler(ap);
1789 static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg)
1791 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1795 writel(~0, mmio + NV_INT_STATUS_MCP55);
1798 writel(0, mmio + NV_INT_ENABLE_MCP55);
1801 tmp = readl(mmio + NV_CTL_MCP55);
1802 tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ);
1803 writel(tmp, mmio + NV_CTL_MCP55);
1808 static int nv_swncq_port_resume(struct ata_port *ap)
1810 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1814 writel(~0, mmio + NV_INT_STATUS_MCP55);
1817 writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1820 tmp = readl(mmio + NV_CTL_MCP55);
1821 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1827 static void nv_swncq_host_init(struct ata_host *host)
1830 void __iomem *mmio = host->iomap[NV_MMIO_BAR];
1831 struct pci_dev *pdev = to_pci_dev(host->dev);
1834 /* disable ECO 398 */
1835 pci_read_config_byte(pdev, 0x7f, ®val);
1836 regval &= ~(1 << 7);
1837 pci_write_config_byte(pdev, 0x7f, regval);
1840 tmp = readl(mmio + NV_CTL_MCP55);
1841 VPRINTK("HOST_CTL:0x%X\n", tmp);
1842 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1844 /* enable irq intr */
1845 tmp = readl(mmio + NV_INT_ENABLE_MCP55);
1846 VPRINTK("HOST_ENABLE:0x%X\n", tmp);
1847 writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1849 /* clear port irq */
1850 writel(~0x0, mmio + NV_INT_STATUS_MCP55);
1853 static int nv_swncq_slave_config(struct scsi_device *sdev)
1855 struct ata_port *ap = ata_shost_to_port(sdev->host);
1856 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
1857 struct ata_device *dev;
1860 u8 check_maxtor = 0;
1861 unsigned char model_num[ATA_ID_PROD_LEN + 1];
1863 rc = ata_scsi_slave_config(sdev);
1864 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
1865 /* Not a proper libata device, ignore */
1868 dev = &ap->link.device[sdev->id];
1869 if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI)
1872 /* if MCP51 and Maxtor, then disable ncq */
1873 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA ||
1874 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2)
1877 /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */
1878 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA ||
1879 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) {
1880 pci_read_config_byte(pdev, 0x8, &rev);
1888 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
1890 if (strncmp(model_num, "Maxtor", 6) == 0) {
1891 ata_scsi_change_queue_depth(sdev, 1);
1892 ata_dev_printk(dev, KERN_NOTICE,
1893 "Disabling SWNCQ mode (depth %x)\n", sdev->queue_depth);
1899 static int nv_swncq_port_start(struct ata_port *ap)
1901 struct device *dev = ap->host->dev;
1902 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1903 struct nv_swncq_port_priv *pp;
1906 rc = ata_port_start(ap);
1910 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1914 pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE,
1915 &pp->prd_dma, GFP_KERNEL);
1918 memset(pp->prd, 0, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE);
1920 ap->private_data = pp;
1921 pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE;
1922 pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2;
1923 pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2;
1928 static void nv_swncq_qc_prep(struct ata_queued_cmd *qc)
1930 if (qc->tf.protocol != ATA_PROT_NCQ) {
1931 ata_sff_qc_prep(qc);
1935 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1938 nv_swncq_fill_sg(qc);
1941 static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
1943 struct ata_port *ap = qc->ap;
1944 struct scatterlist *sg;
1945 struct nv_swncq_port_priv *pp = ap->private_data;
1946 struct ata_prd *prd;
1947 unsigned int si, idx;
1949 prd = pp->prd + ATA_MAX_PRD * qc->tag;
1952 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1956 addr = (u32)sg_dma_address(sg);
1957 sg_len = sg_dma_len(sg);
1960 offset = addr & 0xffff;
1962 if ((offset + sg_len) > 0x10000)
1963 len = 0x10000 - offset;
1965 prd[idx].addr = cpu_to_le32(addr);
1966 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
1974 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
1977 static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap,
1978 struct ata_queued_cmd *qc)
1980 struct nv_swncq_port_priv *pp = ap->private_data;
1987 writel((1 << qc->tag), pp->sactive_block);
1988 pp->last_issue_tag = qc->tag;
1989 pp->dhfis_bits &= ~(1 << qc->tag);
1990 pp->dmafis_bits &= ~(1 << qc->tag);
1991 pp->qc_active |= (0x1 << qc->tag);
1993 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */
1994 ap->ops->sff_exec_command(ap, &qc->tf);
1996 DPRINTK("Issued tag %u\n", qc->tag);
2001 static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc)
2003 struct ata_port *ap = qc->ap;
2004 struct nv_swncq_port_priv *pp = ap->private_data;
2006 if (qc->tf.protocol != ATA_PROT_NCQ)
2007 return ata_sff_qc_issue(qc);
2012 nv_swncq_issue_atacmd(ap, qc);
2014 nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */
2019 static void nv_swncq_hotplug(struct ata_port *ap, u32 fis)
2022 struct ata_eh_info *ehi = &ap->link.eh_info;
2024 ata_ehi_clear_desc(ehi);
2026 /* AHCI needs SError cleared; otherwise, it might lock up */
2027 sata_scr_read(&ap->link, SCR_ERROR, &serror);
2028 sata_scr_write(&ap->link, SCR_ERROR, serror);
2030 /* analyze @irq_stat */
2031 if (fis & NV_SWNCQ_IRQ_ADDED)
2032 ata_ehi_push_desc(ehi, "hot plug");
2033 else if (fis & NV_SWNCQ_IRQ_REMOVED)
2034 ata_ehi_push_desc(ehi, "hot unplug");
2036 ata_ehi_hotplugged(ehi);
2038 /* okay, let's hand over to EH */
2039 ehi->serror |= serror;
2041 ata_port_freeze(ap);
2044 static int nv_swncq_sdbfis(struct ata_port *ap)
2046 struct ata_queued_cmd *qc;
2047 struct nv_swncq_port_priv *pp = ap->private_data;
2048 struct ata_eh_info *ehi = &ap->link.eh_info;
2056 host_stat = ap->ops->bmdma_status(ap);
2057 if (unlikely(host_stat & ATA_DMA_ERR)) {
2058 /* error when transfering data to/from memory */
2059 ata_ehi_clear_desc(ehi);
2060 ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
2061 ehi->err_mask |= AC_ERR_HOST_BUS;
2062 ehi->action |= ATA_EH_RESET;
2066 ap->ops->sff_irq_clear(ap);
2067 __ata_bmdma_stop(ap);
2069 sactive = readl(pp->sactive_block);
2070 done_mask = pp->qc_active ^ sactive;
2072 if (unlikely(done_mask & sactive)) {
2073 ata_ehi_clear_desc(ehi);
2074 ata_ehi_push_desc(ehi, "illegal SWNCQ:qc_active transition"
2075 "(%08x->%08x)", pp->qc_active, sactive);
2076 ehi->err_mask |= AC_ERR_HSM;
2077 ehi->action |= ATA_EH_RESET;
2080 for (i = 0; i < ATA_MAX_QUEUE; i++) {
2081 if (!(done_mask & (1 << i)))
2084 qc = ata_qc_from_tag(ap, i);
2086 ata_qc_complete(qc);
2087 pp->qc_active &= ~(1 << i);
2088 pp->dhfis_bits &= ~(1 << i);
2089 pp->dmafis_bits &= ~(1 << i);
2090 pp->sdbfis_bits |= (1 << i);
2095 if (!ap->qc_active) {
2097 nv_swncq_pp_reinit(ap);
2101 if (pp->qc_active & pp->dhfis_bits)
2104 if ((pp->ncq_flags & ncq_saw_backout) ||
2105 (pp->qc_active ^ pp->dhfis_bits))
2106 /* if the controller cann't get a device to host register FIS,
2107 * The driver needs to reissue the new command.
2111 DPRINTK("id 0x%x QC: qc_active 0x%x,"
2112 "SWNCQ:qc_active 0x%X defer_bits %X "
2113 "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n",
2114 ap->print_id, ap->qc_active, pp->qc_active,
2115 pp->defer_queue.defer_bits, pp->dhfis_bits,
2116 pp->dmafis_bits, pp->last_issue_tag);
2118 nv_swncq_fis_reinit(ap);
2121 qc = ata_qc_from_tag(ap, pp->last_issue_tag);
2122 nv_swncq_issue_atacmd(ap, qc);
2126 if (pp->defer_queue.defer_bits) {
2127 /* send deferral queue command */
2128 qc = nv_swncq_qc_from_dq(ap);
2129 WARN_ON(qc == NULL);
2130 nv_swncq_issue_atacmd(ap, qc);
2136 static inline u32 nv_swncq_tag(struct ata_port *ap)
2138 struct nv_swncq_port_priv *pp = ap->private_data;
2141 tag = readb(pp->tag_block) >> 2;
2142 return (tag & 0x1f);
2145 static int nv_swncq_dmafis(struct ata_port *ap)
2147 struct ata_queued_cmd *qc;
2151 struct nv_swncq_port_priv *pp = ap->private_data;
2153 __ata_bmdma_stop(ap);
2154 tag = nv_swncq_tag(ap);
2156 DPRINTK("dma setup tag 0x%x\n", tag);
2157 qc = ata_qc_from_tag(ap, tag);
2162 rw = qc->tf.flags & ATA_TFLAG_WRITE;
2164 /* load PRD table addr. */
2165 iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->tag,
2166 ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
2168 /* specify data direction, triple-check start bit is clear */
2169 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2170 dmactl &= ~ATA_DMA_WR;
2172 dmactl |= ATA_DMA_WR;
2174 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2179 static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
2181 struct nv_swncq_port_priv *pp = ap->private_data;
2182 struct ata_queued_cmd *qc;
2183 struct ata_eh_info *ehi = &ap->link.eh_info;
2188 ata_stat = ap->ops->sff_check_status(ap);
2189 nv_swncq_irq_clear(ap, fis);
2193 if (ap->pflags & ATA_PFLAG_FROZEN)
2196 if (fis & NV_SWNCQ_IRQ_HOTPLUG) {
2197 nv_swncq_hotplug(ap, fis);
2204 if (ap->ops->scr_read(ap, SCR_ERROR, &serror))
2206 ap->ops->scr_write(ap, SCR_ERROR, serror);
2208 if (ata_stat & ATA_ERR) {
2209 ata_ehi_clear_desc(ehi);
2210 ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis);
2211 ehi->err_mask |= AC_ERR_DEV;
2212 ehi->serror |= serror;
2213 ehi->action |= ATA_EH_RESET;
2214 ata_port_freeze(ap);
2218 if (fis & NV_SWNCQ_IRQ_BACKOUT) {
2219 /* If the IRQ is backout, driver must issue
2220 * the new command again some time later.
2222 pp->ncq_flags |= ncq_saw_backout;
2225 if (fis & NV_SWNCQ_IRQ_SDBFIS) {
2226 pp->ncq_flags |= ncq_saw_sdb;
2227 DPRINTK("id 0x%x SWNCQ: qc_active 0x%X "
2228 "dhfis 0x%X dmafis 0x%X sactive 0x%X\n",
2229 ap->print_id, pp->qc_active, pp->dhfis_bits,
2230 pp->dmafis_bits, readl(pp->sactive_block));
2231 rc = nv_swncq_sdbfis(ap);
2236 if (fis & NV_SWNCQ_IRQ_DHREGFIS) {
2237 /* The interrupt indicates the new command
2238 * was transmitted correctly to the drive.
2240 pp->dhfis_bits |= (0x1 << pp->last_issue_tag);
2241 pp->ncq_flags |= ncq_saw_d2h;
2242 if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) {
2243 ata_ehi_push_desc(ehi, "illegal fis transaction");
2244 ehi->err_mask |= AC_ERR_HSM;
2245 ehi->action |= ATA_EH_RESET;
2249 if (!(fis & NV_SWNCQ_IRQ_DMASETUP) &&
2250 !(pp->ncq_flags & ncq_saw_dmas)) {
2251 ata_stat = ap->ops->sff_check_status(ap);
2252 if (ata_stat & ATA_BUSY)
2255 if (pp->defer_queue.defer_bits) {
2256 DPRINTK("send next command\n");
2257 qc = nv_swncq_qc_from_dq(ap);
2258 nv_swncq_issue_atacmd(ap, qc);
2263 if (fis & NV_SWNCQ_IRQ_DMASETUP) {
2264 /* program the dma controller with appropriate PRD buffers
2265 * and start the DMA transfer for requested command.
2267 pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap));
2268 pp->ncq_flags |= ncq_saw_dmas;
2269 rc = nv_swncq_dmafis(ap);
2275 ata_ehi_push_desc(ehi, "fis:0x%x", fis);
2276 ata_port_freeze(ap);
2280 static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance)
2282 struct ata_host *host = dev_instance;
2284 unsigned int handled = 0;
2285 unsigned long flags;
2288 spin_lock_irqsave(&host->lock, flags);
2290 irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55);
2292 for (i = 0; i < host->n_ports; i++) {
2293 struct ata_port *ap = host->ports[i];
2295 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
2296 if (ap->link.sactive) {
2297 nv_swncq_host_interrupt(ap, (u16)irq_stat);
2300 if (irq_stat) /* reserve Hotplug */
2301 nv_swncq_irq_clear(ap, 0xfff0);
2303 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 static int printed_version;
2317 const struct ata_port_info *ppi[] = { NULL, NULL };
2318 struct nv_pi_priv *ipriv;
2319 struct ata_host *host;
2320 struct nv_host_priv *hpriv;
2324 unsigned long type = ent->driver_data;
2326 // Make sure this is a SATA controller by counting the number of bars
2327 // (NVIDIA SATA controllers will always have six bars). Otherwise,
2328 // it's an IDE controller and we ignore it.
2329 for (bar = 0; bar < 6; bar++)
2330 if (pci_resource_start(pdev, bar) == 0)
2333 if (!printed_version++)
2334 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
2336 rc = pcim_enable_device(pdev);
2340 /* determine type and allocate host */
2341 if (type == CK804 && adma_enabled) {
2342 dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n");
2346 if (type == SWNCQ) {
2348 dev_printk(KERN_NOTICE, &pdev->dev,
2349 "Using SWNCQ mode\n");
2354 ppi[0] = &nv_port_info[type];
2355 ipriv = ppi[0]->private_data;
2356 rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
2360 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
2364 host->private_data = hpriv;
2366 /* request and iomap NV_MMIO_BAR */
2367 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
2371 /* configure SCR access */
2372 base = host->iomap[NV_MMIO_BAR];
2373 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
2374 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
2376 /* enable SATA space for CK804 */
2377 if (type >= CK804) {
2380 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2381 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2382 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2387 rc = nv_adma_host_init(host);
2390 } else if (type == SWNCQ)
2391 nv_swncq_host_init(host);
2393 pci_set_master(pdev);
2394 return ata_host_activate(host, pdev->irq, ipriv->irq_handler,
2395 IRQF_SHARED, ipriv->sht);
2399 static int nv_pci_device_resume(struct pci_dev *pdev)
2401 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2402 struct nv_host_priv *hpriv = host->private_data;
2405 rc = ata_pci_device_do_resume(pdev);
2409 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2410 if (hpriv->type >= CK804) {
2413 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2414 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2415 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2417 if (hpriv->type == ADMA) {
2419 struct nv_adma_port_priv *pp;
2420 /* enable/disable ADMA on the ports appropriately */
2421 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2423 pp = host->ports[0]->private_data;
2424 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2425 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2426 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2428 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
2429 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
2430 pp = host->ports[1]->private_data;
2431 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
2432 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
2433 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2435 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
2436 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2438 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2442 ata_host_resume(host);
2448 static void nv_ck804_host_stop(struct ata_host *host)
2450 struct pci_dev *pdev = to_pci_dev(host->dev);
2453 /* disable SATA space for CK804 */
2454 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
2455 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2456 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2459 static void nv_adma_host_stop(struct ata_host *host)
2461 struct pci_dev *pdev = to_pci_dev(host->dev);
2464 /* disable ADMA on the ports */
2465 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2466 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2467 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
2468 NV_MCP_SATA_CFG_20_PORT1_EN |
2469 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2471 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2473 nv_ck804_host_stop(host);
2476 static int __init nv_init(void)
2478 return pci_register_driver(&nv_pci_driver);
2481 static void __exit nv_exit(void)
2483 pci_unregister_driver(&nv_pci_driver);
2486 module_init(nv_init);
2487 module_exit(nv_exit);
2488 module_param_named(adma, adma_enabled, bool, 0444);
2489 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: true)");
2490 module_param_named(swncq, swncq_enabled, bool, 0444);
2491 MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");