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 "3.4"
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),
174 /* ADMA Physical Region Descriptor - one SG segment */
183 enum nv_adma_regbits {
184 CMDEND = (1 << 15), /* end of command list */
185 WNB = (1 << 14), /* wait-not-BSY */
186 IGN = (1 << 13), /* ignore this entry */
187 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
188 DA2 = (1 << (2 + 8)),
189 DA1 = (1 << (1 + 8)),
190 DA0 = (1 << (0 + 8)),
193 /* ADMA Command Parameter Block
194 The first 5 SG segments are stored inside the Command Parameter Block itself.
195 If there are more than 5 segments the remainder are stored in a separate
196 memory area indicated by next_aprd. */
198 u8 resp_flags; /* 0 */
199 u8 reserved1; /* 1 */
200 u8 ctl_flags; /* 2 */
201 /* len is length of taskfile in 64 bit words */
204 u8 next_cpb_idx; /* 5 */
205 __le16 reserved2; /* 6-7 */
206 __le16 tf[12]; /* 8-31 */
207 struct nv_adma_prd aprd[5]; /* 32-111 */
208 __le64 next_aprd; /* 112-119 */
209 __le64 reserved3; /* 120-127 */
213 struct nv_adma_port_priv {
214 struct nv_adma_cpb *cpb;
216 struct nv_adma_prd *aprd;
218 void __iomem * ctl_block;
219 void __iomem * gen_block;
220 void __iomem * notifier_clear_block;
225 struct nv_host_priv {
229 #define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & ( 1 << (19 + (12 * (PORT)))))
231 static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
233 static int nv_pci_device_resume(struct pci_dev *pdev);
235 static void nv_ck804_host_stop(struct ata_host *host);
236 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
237 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
238 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
239 static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg);
240 static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
242 static void nv_nf2_freeze(struct ata_port *ap);
243 static void nv_nf2_thaw(struct ata_port *ap);
244 static void nv_ck804_freeze(struct ata_port *ap);
245 static void nv_ck804_thaw(struct ata_port *ap);
246 static void nv_error_handler(struct ata_port *ap);
247 static int nv_adma_slave_config(struct scsi_device *sdev);
248 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
249 static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
250 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
251 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
252 static void nv_adma_irq_clear(struct ata_port *ap);
253 static int nv_adma_port_start(struct ata_port *ap);
254 static void nv_adma_port_stop(struct ata_port *ap);
256 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
257 static int nv_adma_port_resume(struct ata_port *ap);
259 static void nv_adma_freeze(struct ata_port *ap);
260 static void nv_adma_thaw(struct ata_port *ap);
261 static void nv_adma_error_handler(struct ata_port *ap);
262 static void nv_adma_host_stop(struct ata_host *host);
263 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
264 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
270 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
275 static const struct pci_device_id nv_pci_tbl[] = {
276 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
277 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
278 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
279 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
280 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
281 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
282 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
283 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), GENERIC },
284 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), GENERIC },
285 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), GENERIC },
286 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), GENERIC },
287 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
288 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
289 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
291 { } /* terminate list */
294 static struct pci_driver nv_pci_driver = {
296 .id_table = nv_pci_tbl,
297 .probe = nv_init_one,
299 .suspend = ata_pci_device_suspend,
300 .resume = nv_pci_device_resume,
302 .remove = ata_pci_remove_one,
305 static struct scsi_host_template nv_sht = {
306 .module = THIS_MODULE,
308 .ioctl = ata_scsi_ioctl,
309 .queuecommand = ata_scsi_queuecmd,
310 .can_queue = ATA_DEF_QUEUE,
311 .this_id = ATA_SHT_THIS_ID,
312 .sg_tablesize = LIBATA_MAX_PRD,
313 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
314 .emulated = ATA_SHT_EMULATED,
315 .use_clustering = ATA_SHT_USE_CLUSTERING,
316 .proc_name = DRV_NAME,
317 .dma_boundary = ATA_DMA_BOUNDARY,
318 .slave_configure = ata_scsi_slave_config,
319 .slave_destroy = ata_scsi_slave_destroy,
320 .bios_param = ata_std_bios_param,
323 static struct scsi_host_template nv_adma_sht = {
324 .module = THIS_MODULE,
326 .ioctl = ata_scsi_ioctl,
327 .queuecommand = ata_scsi_queuecmd,
328 .change_queue_depth = ata_scsi_change_queue_depth,
329 .can_queue = NV_ADMA_MAX_CPBS,
330 .this_id = ATA_SHT_THIS_ID,
331 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
332 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
333 .emulated = ATA_SHT_EMULATED,
334 .use_clustering = ATA_SHT_USE_CLUSTERING,
335 .proc_name = DRV_NAME,
336 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
337 .slave_configure = nv_adma_slave_config,
338 .slave_destroy = ata_scsi_slave_destroy,
339 .bios_param = ata_std_bios_param,
342 static const struct ata_port_operations nv_generic_ops = {
343 .port_disable = ata_port_disable,
344 .tf_load = ata_tf_load,
345 .tf_read = ata_tf_read,
346 .exec_command = ata_exec_command,
347 .check_status = ata_check_status,
348 .dev_select = ata_std_dev_select,
349 .bmdma_setup = ata_bmdma_setup,
350 .bmdma_start = ata_bmdma_start,
351 .bmdma_stop = ata_bmdma_stop,
352 .bmdma_status = ata_bmdma_status,
353 .qc_prep = ata_qc_prep,
354 .qc_issue = ata_qc_issue_prot,
355 .freeze = ata_bmdma_freeze,
356 .thaw = ata_bmdma_thaw,
357 .error_handler = nv_error_handler,
358 .post_internal_cmd = ata_bmdma_post_internal_cmd,
359 .data_xfer = ata_data_xfer,
360 .irq_clear = ata_bmdma_irq_clear,
361 .irq_on = ata_irq_on,
362 .irq_ack = ata_irq_ack,
363 .scr_read = nv_scr_read,
364 .scr_write = nv_scr_write,
365 .port_start = ata_port_start,
368 static const struct ata_port_operations nv_nf2_ops = {
369 .port_disable = ata_port_disable,
370 .tf_load = ata_tf_load,
371 .tf_read = ata_tf_read,
372 .exec_command = ata_exec_command,
373 .check_status = ata_check_status,
374 .dev_select = ata_std_dev_select,
375 .bmdma_setup = ata_bmdma_setup,
376 .bmdma_start = ata_bmdma_start,
377 .bmdma_stop = ata_bmdma_stop,
378 .bmdma_status = ata_bmdma_status,
379 .qc_prep = ata_qc_prep,
380 .qc_issue = ata_qc_issue_prot,
381 .freeze = nv_nf2_freeze,
383 .error_handler = nv_error_handler,
384 .post_internal_cmd = ata_bmdma_post_internal_cmd,
385 .data_xfer = ata_data_xfer,
386 .irq_clear = ata_bmdma_irq_clear,
387 .irq_on = ata_irq_on,
388 .irq_ack = ata_irq_ack,
389 .scr_read = nv_scr_read,
390 .scr_write = nv_scr_write,
391 .port_start = ata_port_start,
394 static const struct ata_port_operations nv_ck804_ops = {
395 .port_disable = ata_port_disable,
396 .tf_load = ata_tf_load,
397 .tf_read = ata_tf_read,
398 .exec_command = ata_exec_command,
399 .check_status = ata_check_status,
400 .dev_select = ata_std_dev_select,
401 .bmdma_setup = ata_bmdma_setup,
402 .bmdma_start = ata_bmdma_start,
403 .bmdma_stop = ata_bmdma_stop,
404 .bmdma_status = ata_bmdma_status,
405 .qc_prep = ata_qc_prep,
406 .qc_issue = ata_qc_issue_prot,
407 .freeze = nv_ck804_freeze,
408 .thaw = nv_ck804_thaw,
409 .error_handler = nv_error_handler,
410 .post_internal_cmd = ata_bmdma_post_internal_cmd,
411 .data_xfer = ata_data_xfer,
412 .irq_clear = ata_bmdma_irq_clear,
413 .irq_on = ata_irq_on,
414 .irq_ack = ata_irq_ack,
415 .scr_read = nv_scr_read,
416 .scr_write = nv_scr_write,
417 .port_start = ata_port_start,
418 .host_stop = nv_ck804_host_stop,
421 static const struct ata_port_operations nv_adma_ops = {
422 .port_disable = ata_port_disable,
423 .tf_load = ata_tf_load,
424 .tf_read = nv_adma_tf_read,
425 .check_atapi_dma = nv_adma_check_atapi_dma,
426 .exec_command = ata_exec_command,
427 .check_status = ata_check_status,
428 .dev_select = ata_std_dev_select,
429 .bmdma_setup = ata_bmdma_setup,
430 .bmdma_start = ata_bmdma_start,
431 .bmdma_stop = ata_bmdma_stop,
432 .bmdma_status = ata_bmdma_status,
433 .qc_prep = nv_adma_qc_prep,
434 .qc_issue = nv_adma_qc_issue,
435 .freeze = nv_adma_freeze,
436 .thaw = nv_adma_thaw,
437 .error_handler = nv_adma_error_handler,
438 .post_internal_cmd = nv_adma_post_internal_cmd,
439 .data_xfer = ata_data_xfer,
440 .irq_clear = nv_adma_irq_clear,
441 .irq_on = ata_irq_on,
442 .irq_ack = ata_irq_ack,
443 .scr_read = nv_scr_read,
444 .scr_write = nv_scr_write,
445 .port_start = nv_adma_port_start,
446 .port_stop = nv_adma_port_stop,
448 .port_suspend = nv_adma_port_suspend,
449 .port_resume = nv_adma_port_resume,
451 .host_stop = nv_adma_host_stop,
454 static const struct ata_port_info nv_port_info[] = {
458 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
459 ATA_FLAG_HRST_TO_RESUME,
460 .pio_mask = NV_PIO_MASK,
461 .mwdma_mask = NV_MWDMA_MASK,
462 .udma_mask = NV_UDMA_MASK,
463 .port_ops = &nv_generic_ops,
464 .irq_handler = nv_generic_interrupt,
469 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
470 ATA_FLAG_HRST_TO_RESUME,
471 .pio_mask = NV_PIO_MASK,
472 .mwdma_mask = NV_MWDMA_MASK,
473 .udma_mask = NV_UDMA_MASK,
474 .port_ops = &nv_nf2_ops,
475 .irq_handler = nv_nf2_interrupt,
480 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
481 ATA_FLAG_HRST_TO_RESUME,
482 .pio_mask = NV_PIO_MASK,
483 .mwdma_mask = NV_MWDMA_MASK,
484 .udma_mask = NV_UDMA_MASK,
485 .port_ops = &nv_ck804_ops,
486 .irq_handler = nv_ck804_interrupt,
491 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
492 ATA_FLAG_HRST_TO_RESUME |
493 ATA_FLAG_MMIO | ATA_FLAG_NCQ,
494 .pio_mask = NV_PIO_MASK,
495 .mwdma_mask = NV_MWDMA_MASK,
496 .udma_mask = NV_UDMA_MASK,
497 .port_ops = &nv_adma_ops,
498 .irq_handler = nv_adma_interrupt,
502 MODULE_AUTHOR("NVIDIA");
503 MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
504 MODULE_LICENSE("GPL");
505 MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
506 MODULE_VERSION(DRV_VERSION);
508 static int adma_enabled = 1;
510 static void nv_adma_register_mode(struct ata_port *ap)
512 struct nv_adma_port_priv *pp = ap->private_data;
513 void __iomem *mmio = pp->ctl_block;
517 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
520 status = readw(mmio + NV_ADMA_STAT);
521 while(!(status & NV_ADMA_STAT_IDLE) && count < 20) {
523 status = readw(mmio + NV_ADMA_STAT);
527 ata_port_printk(ap, KERN_WARNING,
528 "timeout waiting for ADMA IDLE, stat=0x%hx\n",
531 tmp = readw(mmio + NV_ADMA_CTL);
532 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
535 status = readw(mmio + NV_ADMA_STAT);
536 while(!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
538 status = readw(mmio + NV_ADMA_STAT);
542 ata_port_printk(ap, KERN_WARNING,
543 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
546 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
549 static void nv_adma_mode(struct ata_port *ap)
551 struct nv_adma_port_priv *pp = ap->private_data;
552 void __iomem *mmio = pp->ctl_block;
556 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
559 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
561 tmp = readw(mmio + NV_ADMA_CTL);
562 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
564 status = readw(mmio + NV_ADMA_STAT);
565 while(((status & NV_ADMA_STAT_LEGACY) ||
566 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
568 status = readw(mmio + NV_ADMA_STAT);
572 ata_port_printk(ap, KERN_WARNING,
573 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
576 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
579 static int nv_adma_slave_config(struct scsi_device *sdev)
581 struct ata_port *ap = ata_shost_to_port(sdev->host);
582 struct nv_adma_port_priv *pp = ap->private_data;
583 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
585 unsigned long segment_boundary;
586 unsigned short sg_tablesize;
589 u32 current_reg, new_reg, config_mask;
591 rc = ata_scsi_slave_config(sdev);
593 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
594 /* Not a proper libata device, ignore */
597 if (ap->device[sdev->id].class == ATA_DEV_ATAPI) {
599 * NVIDIA reports that ADMA mode does not support ATAPI commands.
600 * Therefore ATAPI commands are sent through the legacy interface.
601 * However, the legacy interface only supports 32-bit DMA.
602 * Restrict DMA parameters as required by the legacy interface
603 * when an ATAPI device is connected.
605 bounce_limit = ATA_DMA_MASK;
606 segment_boundary = ATA_DMA_BOUNDARY;
607 /* Subtract 1 since an extra entry may be needed for padding, see
609 sg_tablesize = LIBATA_MAX_PRD - 1;
611 /* Since the legacy DMA engine is in use, we need to disable ADMA
614 nv_adma_register_mode(ap);
617 bounce_limit = *ap->dev->dma_mask;
618 segment_boundary = NV_ADMA_DMA_BOUNDARY;
619 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
623 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, ¤t_reg);
626 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
627 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
629 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
630 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
633 new_reg = current_reg | config_mask;
634 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
637 new_reg = current_reg & ~config_mask;
638 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
641 if(current_reg != new_reg)
642 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
644 blk_queue_bounce_limit(sdev->request_queue, bounce_limit);
645 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
646 blk_queue_max_hw_segments(sdev->request_queue, sg_tablesize);
647 ata_port_printk(ap, KERN_INFO,
648 "bounce limit 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
649 (unsigned long long)bounce_limit, segment_boundary, sg_tablesize);
653 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
655 struct nv_adma_port_priv *pp = qc->ap->private_data;
656 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
659 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
661 /* Since commands where a result TF is requested are not
662 executed in ADMA mode, the only time this function will be called
663 in ADMA mode will be if a command fails. In this case we
664 don't care about going into register mode with ADMA commands
665 pending, as the commands will all shortly be aborted anyway. */
666 nv_adma_register_mode(ap);
671 static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
673 unsigned int idx = 0;
675 if(tf->flags & ATA_TFLAG_ISADDR) {
676 if (tf->flags & ATA_TFLAG_LBA48) {
677 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
678 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
679 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
680 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
681 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
682 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
684 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
686 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
687 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
688 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
689 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
692 if(tf->flags & ATA_TFLAG_DEVICE)
693 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
695 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
698 cpb[idx++] = cpu_to_le16(IGN);
703 static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
705 struct nv_adma_port_priv *pp = ap->private_data;
706 u8 flags = pp->cpb[cpb_num].resp_flags;
708 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
710 if (unlikely((force_err ||
711 flags & (NV_CPB_RESP_ATA_ERR |
712 NV_CPB_RESP_CMD_ERR |
713 NV_CPB_RESP_CPB_ERR)))) {
714 struct ata_eh_info *ehi = &ap->eh_info;
717 ata_ehi_clear_desc(ehi);
718 ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x", flags );
719 if (flags & NV_CPB_RESP_ATA_ERR) {
720 ata_ehi_push_desc(ehi, ": ATA error");
721 ehi->err_mask |= AC_ERR_DEV;
722 } else if (flags & NV_CPB_RESP_CMD_ERR) {
723 ata_ehi_push_desc(ehi, ": CMD error");
724 ehi->err_mask |= AC_ERR_DEV;
725 } else if (flags & NV_CPB_RESP_CPB_ERR) {
726 ata_ehi_push_desc(ehi, ": CPB error");
727 ehi->err_mask |= AC_ERR_SYSTEM;
730 /* notifier error, but no error in CPB flags? */
731 ehi->err_mask |= AC_ERR_OTHER;
734 /* Kill all commands. EH will determine what actually failed. */
742 if (likely(flags & NV_CPB_RESP_DONE)) {
743 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num);
744 VPRINTK("CPB flags done, flags=0x%x\n", flags);
746 DPRINTK("Completing qc from tag %d\n",cpb_num);
749 struct ata_eh_info *ehi = &ap->eh_info;
750 /* Notifier bits set without a command may indicate the drive
751 is misbehaving. Raise host state machine violation on this
753 ata_port_printk(ap, KERN_ERR, "notifier for tag %d with no command?\n",
755 ehi->err_mask |= AC_ERR_HSM;
756 ehi->action |= ATA_EH_SOFTRESET;
764 static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
766 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
768 /* freeze if hotplugged */
769 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
774 /* bail out if not our interrupt */
775 if (!(irq_stat & NV_INT_DEV))
778 /* DEV interrupt w/ no active qc? */
779 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
780 ata_check_status(ap);
784 /* handle interrupt */
785 return ata_host_intr(ap, qc);
788 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
790 struct ata_host *host = dev_instance;
792 u32 notifier_clears[2];
794 spin_lock(&host->lock);
796 for (i = 0; i < host->n_ports; i++) {
797 struct ata_port *ap = host->ports[i];
798 notifier_clears[i] = 0;
800 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
801 struct nv_adma_port_priv *pp = ap->private_data;
802 void __iomem *mmio = pp->ctl_block;
805 u32 notifier, notifier_error;
807 /* if ADMA is disabled, use standard ata interrupt handler */
808 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
809 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
810 >> (NV_INT_PORT_SHIFT * i);
811 handled += nv_host_intr(ap, irq_stat);
815 /* if in ATA register mode, check for standard interrupts */
816 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
817 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
818 >> (NV_INT_PORT_SHIFT * i);
819 if(ata_tag_valid(ap->active_tag))
820 /** NV_INT_DEV indication seems unreliable at times
821 at least in ADMA mode. Force it on always when a
822 command is active, to prevent losing interrupts. */
823 irq_stat |= NV_INT_DEV;
824 handled += nv_host_intr(ap, irq_stat);
827 notifier = readl(mmio + NV_ADMA_NOTIFIER);
828 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
829 notifier_clears[i] = notifier | notifier_error;
831 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
833 if( !NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
838 status = readw(mmio + NV_ADMA_STAT);
840 /* Clear status. Ensure the controller sees the clearing before we start
841 looking at any of the CPB statuses, so that any CPB completions after
842 this point in the handler will raise another interrupt. */
843 writew(status, mmio + NV_ADMA_STAT);
844 readw(mmio + NV_ADMA_STAT); /* flush posted write */
847 handled++; /* irq handled if we got here */
849 /* freeze if hotplugged or controller error */
850 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
851 NV_ADMA_STAT_HOTUNPLUG |
852 NV_ADMA_STAT_TIMEOUT |
853 NV_ADMA_STAT_SERROR))) {
854 struct ata_eh_info *ehi = &ap->eh_info;
856 ata_ehi_clear_desc(ehi);
857 ata_ehi_push_desc(ehi, "ADMA status 0x%08x", status );
858 if (status & NV_ADMA_STAT_TIMEOUT) {
859 ehi->err_mask |= AC_ERR_SYSTEM;
860 ata_ehi_push_desc(ehi, ": timeout");
861 } else if (status & NV_ADMA_STAT_HOTPLUG) {
862 ata_ehi_hotplugged(ehi);
863 ata_ehi_push_desc(ehi, ": hotplug");
864 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
865 ata_ehi_hotplugged(ehi);
866 ata_ehi_push_desc(ehi, ": hot unplug");
867 } else if (status & NV_ADMA_STAT_SERROR) {
868 /* let libata analyze SError and figure out the cause */
869 ata_ehi_push_desc(ehi, ": SError");
875 if (status & (NV_ADMA_STAT_DONE |
876 NV_ADMA_STAT_CPBERR)) {
880 if(ata_tag_valid(ap->active_tag))
881 check_commands = 1 << ap->active_tag;
883 check_commands = ap->sactive;
885 /** Check CPBs for completed commands */
886 while ((pos = ffs(check_commands)) && !error) {
888 error = nv_adma_check_cpb(ap, pos,
889 notifier_error & (1 << pos) );
890 check_commands &= ~(1 << pos );
896 if(notifier_clears[0] || notifier_clears[1]) {
897 /* Note: Both notifier clear registers must be written
898 if either is set, even if one is zero, according to NVIDIA. */
899 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
900 writel(notifier_clears[0], pp->notifier_clear_block);
901 pp = host->ports[1]->private_data;
902 writel(notifier_clears[1], pp->notifier_clear_block);
905 spin_unlock(&host->lock);
907 return IRQ_RETVAL(handled);
910 static void nv_adma_freeze(struct ata_port *ap)
912 struct nv_adma_port_priv *pp = ap->private_data;
913 void __iomem *mmio = pp->ctl_block;
918 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
921 /* clear any outstanding CK804 notifications */
922 writeb( NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
923 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
925 /* Disable interrupt */
926 tmp = readw(mmio + NV_ADMA_CTL);
927 writew( tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
929 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
932 static void nv_adma_thaw(struct ata_port *ap)
934 struct nv_adma_port_priv *pp = ap->private_data;
935 void __iomem *mmio = pp->ctl_block;
940 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
943 /* Enable interrupt */
944 tmp = readw(mmio + NV_ADMA_CTL);
945 writew( tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
947 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
950 static void nv_adma_irq_clear(struct ata_port *ap)
952 struct nv_adma_port_priv *pp = ap->private_data;
953 void __iomem *mmio = pp->ctl_block;
954 u32 notifier_clears[2];
956 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
957 ata_bmdma_irq_clear(ap);
961 /* clear any outstanding CK804 notifications */
962 writeb( NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
963 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
965 /* clear ADMA status */
966 writew(0xffff, mmio + NV_ADMA_STAT);
968 /* clear notifiers - note both ports need to be written with
969 something even though we are only clearing on one */
970 if (ap->port_no == 0) {
971 notifier_clears[0] = 0xFFFFFFFF;
972 notifier_clears[1] = 0;
974 notifier_clears[0] = 0;
975 notifier_clears[1] = 0xFFFFFFFF;
977 pp = ap->host->ports[0]->private_data;
978 writel(notifier_clears[0], pp->notifier_clear_block);
979 pp = ap->host->ports[1]->private_data;
980 writel(notifier_clears[1], pp->notifier_clear_block);
983 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
985 struct nv_adma_port_priv *pp = qc->ap->private_data;
987 if(pp->flags & NV_ADMA_PORT_REGISTER_MODE)
988 ata_bmdma_post_internal_cmd(qc);
991 static int nv_adma_port_start(struct ata_port *ap)
993 struct device *dev = ap->host->dev;
994 struct nv_adma_port_priv *pp;
1003 rc = ata_port_start(ap);
1007 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1011 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
1012 ap->port_no * NV_ADMA_PORT_SIZE;
1013 pp->ctl_block = mmio;
1014 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
1015 pp->notifier_clear_block = pp->gen_block +
1016 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1018 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1019 &mem_dma, GFP_KERNEL);
1022 memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ);
1025 * First item in chunk of DMA memory:
1026 * 128-byte command parameter block (CPB)
1027 * one for each command tag
1030 pp->cpb_dma = mem_dma;
1032 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1033 writel((mem_dma >> 16 ) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1035 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1036 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1039 * Second item: block of ADMA_SGTBL_LEN s/g entries
1042 pp->aprd_dma = mem_dma;
1044 ap->private_data = pp;
1046 /* clear any outstanding interrupt conditions */
1047 writew(0xffff, mmio + NV_ADMA_STAT);
1049 /* initialize port variables */
1050 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1052 /* clear CPB fetch count */
1053 writew(0, mmio + NV_ADMA_CPB_COUNT);
1055 /* clear GO for register mode, enable interrupt */
1056 tmp = readw(mmio + NV_ADMA_CTL);
1057 writew( (tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1058 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1060 tmp = readw(mmio + NV_ADMA_CTL);
1061 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1062 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1064 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1065 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1070 static void nv_adma_port_stop(struct ata_port *ap)
1072 struct nv_adma_port_priv *pp = ap->private_data;
1073 void __iomem *mmio = pp->ctl_block;
1076 writew(0, mmio + NV_ADMA_CTL);
1080 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1082 struct nv_adma_port_priv *pp = ap->private_data;
1083 void __iomem *mmio = pp->ctl_block;
1085 /* Go to register mode - clears GO */
1086 nv_adma_register_mode(ap);
1088 /* clear CPB fetch count */
1089 writew(0, mmio + NV_ADMA_CPB_COUNT);
1091 /* disable interrupt, shut down port */
1092 writew(0, mmio + NV_ADMA_CTL);
1097 static int nv_adma_port_resume(struct ata_port *ap)
1099 struct nv_adma_port_priv *pp = ap->private_data;
1100 void __iomem *mmio = pp->ctl_block;
1103 /* set CPB block location */
1104 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1105 writel((pp->cpb_dma >> 16 ) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1107 /* clear any outstanding interrupt conditions */
1108 writew(0xffff, mmio + NV_ADMA_STAT);
1110 /* initialize port variables */
1111 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1113 /* clear CPB fetch count */
1114 writew(0, mmio + NV_ADMA_CPB_COUNT);
1116 /* clear GO for register mode, enable interrupt */
1117 tmp = readw(mmio + NV_ADMA_CTL);
1118 writew( (tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1119 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1121 tmp = readw(mmio + NV_ADMA_CTL);
1122 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1123 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1125 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1126 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1132 static void nv_adma_setup_port(struct ata_port *ap)
1134 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1135 struct ata_ioports *ioport = &ap->ioaddr;
1139 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
1141 ioport->cmd_addr = mmio;
1142 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
1143 ioport->error_addr =
1144 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1145 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1146 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1147 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1148 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1149 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
1150 ioport->status_addr =
1151 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
1152 ioport->altstatus_addr =
1153 ioport->ctl_addr = mmio + 0x20;
1156 static int nv_adma_host_init(struct ata_host *host)
1158 struct pci_dev *pdev = to_pci_dev(host->dev);
1164 /* enable ADMA on the ports */
1165 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1166 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1167 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1168 NV_MCP_SATA_CFG_20_PORT1_EN |
1169 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1171 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1173 for (i = 0; i < host->n_ports; i++)
1174 nv_adma_setup_port(host->ports[i]);
1179 static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1180 struct scatterlist *sg,
1182 struct nv_adma_prd *aprd)
1185 if (qc->tf.flags & ATA_TFLAG_WRITE)
1186 flags |= NV_APRD_WRITE;
1187 if (idx == qc->n_elem - 1)
1188 flags |= NV_APRD_END;
1190 flags |= NV_APRD_CONT;
1192 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1193 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
1194 aprd->flags = flags;
1195 aprd->packet_len = 0;
1198 static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1200 struct nv_adma_port_priv *pp = qc->ap->private_data;
1202 struct nv_adma_prd *aprd;
1203 struct scatterlist *sg;
1209 ata_for_each_sg(sg, qc) {
1210 aprd = (idx < 5) ? &cpb->aprd[idx] : &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (idx-5)];
1211 nv_adma_fill_aprd(qc, sg, idx, aprd);
1215 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag)));
1217 cpb->next_aprd = cpu_to_le64(0);
1220 static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1222 struct nv_adma_port_priv *pp = qc->ap->private_data;
1224 /* ADMA engine can only be used for non-ATAPI DMA commands,
1225 or interrupt-driven no-data commands, where a result taskfile
1227 if((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
1228 (qc->tf.flags & ATA_TFLAG_POLLING) ||
1229 (qc->flags & ATA_QCFLAG_RESULT_TF))
1232 if((qc->flags & ATA_QCFLAG_DMAMAP) ||
1233 (qc->tf.protocol == ATA_PROT_NODATA))
1239 static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1241 struct nv_adma_port_priv *pp = qc->ap->private_data;
1242 struct nv_adma_cpb *cpb = &pp->cpb[qc->tag];
1243 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
1246 if (nv_adma_use_reg_mode(qc)) {
1247 nv_adma_register_mode(qc->ap);
1252 cpb->resp_flags = NV_CPB_RESP_DONE;
1259 cpb->next_cpb_idx = 0;
1261 /* turn on NCQ flags for NCQ commands */
1262 if (qc->tf.protocol == ATA_PROT_NCQ)
1263 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1265 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1267 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1269 if(qc->flags & ATA_QCFLAG_DMAMAP) {
1270 nv_adma_fill_sg(qc, cpb);
1271 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1273 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
1275 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID until we are
1276 finished filling in all of the contents */
1278 cpb->ctl_flags = ctl_flags;
1280 cpb->resp_flags = 0;
1283 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1285 struct nv_adma_port_priv *pp = qc->ap->private_data;
1286 void __iomem *mmio = pp->ctl_block;
1287 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
1291 if (nv_adma_use_reg_mode(qc)) {
1292 /* use ATA register mode */
1293 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
1294 nv_adma_register_mode(qc->ap);
1295 return ata_qc_issue_prot(qc);
1297 nv_adma_mode(qc->ap);
1299 /* write append register, command tag in lower 8 bits
1300 and (number of cpbs to append -1) in top 8 bits */
1303 if(curr_ncq != pp->last_issue_ncq) {
1304 /* Seems to need some delay before switching between NCQ and non-NCQ
1305 commands, else we get command timeouts and such. */
1307 pp->last_issue_ncq = curr_ncq;
1310 writew(qc->tag, mmio + NV_ADMA_APPEND);
1312 DPRINTK("Issued tag %u\n",qc->tag);
1317 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1319 struct ata_host *host = dev_instance;
1321 unsigned int handled = 0;
1322 unsigned long flags;
1324 spin_lock_irqsave(&host->lock, flags);
1326 for (i = 0; i < host->n_ports; i++) {
1327 struct ata_port *ap;
1329 ap = host->ports[i];
1331 !(ap->flags & ATA_FLAG_DISABLED)) {
1332 struct ata_queued_cmd *qc;
1334 qc = ata_qc_from_tag(ap, ap->active_tag);
1335 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
1336 handled += ata_host_intr(ap, qc);
1338 // No request pending? Clear interrupt status
1339 // anyway, in case there's one pending.
1340 ap->ops->check_status(ap);
1345 spin_unlock_irqrestore(&host->lock, flags);
1347 return IRQ_RETVAL(handled);
1350 static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
1354 for (i = 0; i < host->n_ports; i++) {
1355 struct ata_port *ap = host->ports[i];
1357 if (ap && !(ap->flags & ATA_FLAG_DISABLED))
1358 handled += nv_host_intr(ap, irq_stat);
1360 irq_stat >>= NV_INT_PORT_SHIFT;
1363 return IRQ_RETVAL(handled);
1366 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
1368 struct ata_host *host = dev_instance;
1372 spin_lock(&host->lock);
1373 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
1374 ret = nv_do_interrupt(host, irq_stat);
1375 spin_unlock(&host->lock);
1380 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
1382 struct ata_host *host = dev_instance;
1386 spin_lock(&host->lock);
1387 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1388 ret = nv_do_interrupt(host, irq_stat);
1389 spin_unlock(&host->lock);
1394 static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg)
1396 if (sc_reg > SCR_CONTROL)
1399 return ioread32(ap->ioaddr.scr_addr + (sc_reg * 4));
1402 static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
1404 if (sc_reg > SCR_CONTROL)
1407 iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4));
1410 static void nv_nf2_freeze(struct ata_port *ap)
1412 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1413 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1416 mask = ioread8(scr_addr + NV_INT_ENABLE);
1417 mask &= ~(NV_INT_ALL << shift);
1418 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1421 static void nv_nf2_thaw(struct ata_port *ap)
1423 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1424 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1427 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
1429 mask = ioread8(scr_addr + NV_INT_ENABLE);
1430 mask |= (NV_INT_MASK << shift);
1431 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1434 static void nv_ck804_freeze(struct ata_port *ap)
1436 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1437 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1440 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1441 mask &= ~(NV_INT_ALL << shift);
1442 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1445 static void nv_ck804_thaw(struct ata_port *ap)
1447 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1448 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1451 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1453 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1454 mask |= (NV_INT_MASK << shift);
1455 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1458 static int nv_hardreset(struct ata_port *ap, unsigned int *class,
1459 unsigned long deadline)
1463 /* SATA hardreset fails to retrieve proper device signature on
1464 * some controllers. Don't classify on hardreset. For more
1465 * info, see http://bugme.osdl.org/show_bug.cgi?id=3352
1467 return sata_std_hardreset(ap, &dummy, deadline);
1470 static void nv_error_handler(struct ata_port *ap)
1472 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
1473 nv_hardreset, ata_std_postreset);
1476 static void nv_adma_error_handler(struct ata_port *ap)
1478 struct nv_adma_port_priv *pp = ap->private_data;
1479 if(!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
1480 void __iomem *mmio = pp->ctl_block;
1484 if(ata_tag_valid(ap->active_tag) || ap->sactive) {
1485 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1486 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1487 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1488 u32 status = readw(mmio + NV_ADMA_STAT);
1489 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1490 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
1492 ata_port_printk(ap, KERN_ERR, "EH in ADMA mode, notifier 0x%X "
1493 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1494 "next cpb count 0x%X next cpb idx 0x%x\n",
1495 notifier, notifier_error, gen_ctl, status,
1496 cpb_count, next_cpb_idx);
1498 for( i=0;i<NV_ADMA_MAX_CPBS;i++) {
1499 struct nv_adma_cpb *cpb = &pp->cpb[i];
1500 if( (ata_tag_valid(ap->active_tag) && i == ap->active_tag) ||
1501 ap->sactive & (1 << i) )
1502 ata_port_printk(ap, KERN_ERR,
1503 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1504 i, cpb->ctl_flags, cpb->resp_flags);
1508 /* Push us back into port register mode for error handling. */
1509 nv_adma_register_mode(ap);
1511 /* Mark all of the CPBs as invalid to prevent them from being executed */
1512 for( i=0;i<NV_ADMA_MAX_CPBS;i++)
1513 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1515 /* clear CPB fetch count */
1516 writew(0, mmio + NV_ADMA_CPB_COUNT);
1519 tmp = readw(mmio + NV_ADMA_CTL);
1520 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1521 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1523 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1524 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1527 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
1528 nv_hardreset, ata_std_postreset);
1531 static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1533 static int printed_version = 0;
1534 const struct ata_port_info *ppi[] = { NULL, NULL };
1535 struct ata_host *host;
1536 struct nv_host_priv *hpriv;
1540 unsigned long type = ent->driver_data;
1542 // Make sure this is a SATA controller by counting the number of bars
1543 // (NVIDIA SATA controllers will always have six bars). Otherwise,
1544 // it's an IDE controller and we ignore it.
1545 for (bar=0; bar<6; bar++)
1546 if (pci_resource_start(pdev, bar) == 0)
1549 if (!printed_version++)
1550 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1552 rc = pcim_enable_device(pdev);
1556 /* determine type and allocate host */
1557 if (type >= CK804 && adma_enabled) {
1558 dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n");
1562 ppi[0] = &nv_port_info[type];
1563 rc = ata_pci_prepare_native_host(pdev, ppi, &host);
1567 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1571 host->private_data = hpriv;
1573 /* set 64bit dma masks, may fail */
1575 if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0)
1576 pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1579 /* request and iomap NV_MMIO_BAR */
1580 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
1584 /* configure SCR access */
1585 base = host->iomap[NV_MMIO_BAR];
1586 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
1587 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
1589 /* enable SATA space for CK804 */
1590 if (type >= CK804) {
1593 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
1594 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1595 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1600 rc = nv_adma_host_init(host);
1605 pci_set_master(pdev);
1606 return ata_host_activate(host, pdev->irq, ppi[0]->irq_handler,
1607 IRQF_SHARED, ppi[0]->sht);
1611 static int nv_pci_device_resume(struct pci_dev *pdev)
1613 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1614 struct nv_host_priv *hpriv = host->private_data;
1617 rc = ata_pci_device_do_resume(pdev);
1621 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
1622 if(hpriv->type >= CK804) {
1625 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
1626 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1627 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1629 if(hpriv->type == ADMA) {
1631 struct nv_adma_port_priv *pp;
1632 /* enable/disable ADMA on the ports appropriately */
1633 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1635 pp = host->ports[0]->private_data;
1636 if(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1637 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
1638 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
1640 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
1641 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
1642 pp = host->ports[1]->private_data;
1643 if(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1644 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
1645 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1647 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
1648 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1650 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1654 ata_host_resume(host);
1660 static void nv_ck804_host_stop(struct ata_host *host)
1662 struct pci_dev *pdev = to_pci_dev(host->dev);
1665 /* disable SATA space for CK804 */
1666 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
1667 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1668 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1671 static void nv_adma_host_stop(struct ata_host *host)
1673 struct pci_dev *pdev = to_pci_dev(host->dev);
1676 /* disable ADMA on the ports */
1677 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1678 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
1679 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1680 NV_MCP_SATA_CFG_20_PORT1_EN |
1681 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1683 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1685 nv_ck804_host_stop(host);
1688 static int __init nv_init(void)
1690 return pci_register_driver(&nv_pci_driver);
1693 static void __exit nv_exit(void)
1695 pci_unregister_driver(&nv_pci_driver);
1698 module_init(nv_init);
1699 module_exit(nv_exit);
1700 module_param_named(adma, adma_enabled, bool, 0444);
1701 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: true)");