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 "3.3"
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 .can_queue = NV_ADMA_MAX_CPBS,
329 .this_id = ATA_SHT_THIS_ID,
330 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
331 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
332 .emulated = ATA_SHT_EMULATED,
333 .use_clustering = ATA_SHT_USE_CLUSTERING,
334 .proc_name = DRV_NAME,
335 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
336 .slave_configure = nv_adma_slave_config,
337 .slave_destroy = ata_scsi_slave_destroy,
338 .bios_param = ata_std_bios_param,
341 static const struct ata_port_operations nv_generic_ops = {
342 .port_disable = ata_port_disable,
343 .tf_load = ata_tf_load,
344 .tf_read = ata_tf_read,
345 .exec_command = ata_exec_command,
346 .check_status = ata_check_status,
347 .dev_select = ata_std_dev_select,
348 .bmdma_setup = ata_bmdma_setup,
349 .bmdma_start = ata_bmdma_start,
350 .bmdma_stop = ata_bmdma_stop,
351 .bmdma_status = ata_bmdma_status,
352 .qc_prep = ata_qc_prep,
353 .qc_issue = ata_qc_issue_prot,
354 .freeze = ata_bmdma_freeze,
355 .thaw = ata_bmdma_thaw,
356 .error_handler = nv_error_handler,
357 .post_internal_cmd = ata_bmdma_post_internal_cmd,
358 .data_xfer = ata_data_xfer,
359 .irq_clear = ata_bmdma_irq_clear,
360 .irq_on = ata_irq_on,
361 .irq_ack = ata_irq_ack,
362 .scr_read = nv_scr_read,
363 .scr_write = nv_scr_write,
364 .port_start = ata_port_start,
367 static const struct ata_port_operations nv_nf2_ops = {
368 .port_disable = ata_port_disable,
369 .tf_load = ata_tf_load,
370 .tf_read = ata_tf_read,
371 .exec_command = ata_exec_command,
372 .check_status = ata_check_status,
373 .dev_select = ata_std_dev_select,
374 .bmdma_setup = ata_bmdma_setup,
375 .bmdma_start = ata_bmdma_start,
376 .bmdma_stop = ata_bmdma_stop,
377 .bmdma_status = ata_bmdma_status,
378 .qc_prep = ata_qc_prep,
379 .qc_issue = ata_qc_issue_prot,
380 .freeze = nv_nf2_freeze,
382 .error_handler = nv_error_handler,
383 .post_internal_cmd = ata_bmdma_post_internal_cmd,
384 .data_xfer = ata_data_xfer,
385 .irq_clear = ata_bmdma_irq_clear,
386 .irq_on = ata_irq_on,
387 .irq_ack = ata_irq_ack,
388 .scr_read = nv_scr_read,
389 .scr_write = nv_scr_write,
390 .port_start = ata_port_start,
393 static const struct ata_port_operations nv_ck804_ops = {
394 .port_disable = ata_port_disable,
395 .tf_load = ata_tf_load,
396 .tf_read = ata_tf_read,
397 .exec_command = ata_exec_command,
398 .check_status = ata_check_status,
399 .dev_select = ata_std_dev_select,
400 .bmdma_setup = ata_bmdma_setup,
401 .bmdma_start = ata_bmdma_start,
402 .bmdma_stop = ata_bmdma_stop,
403 .bmdma_status = ata_bmdma_status,
404 .qc_prep = ata_qc_prep,
405 .qc_issue = ata_qc_issue_prot,
406 .freeze = nv_ck804_freeze,
407 .thaw = nv_ck804_thaw,
408 .error_handler = nv_error_handler,
409 .post_internal_cmd = ata_bmdma_post_internal_cmd,
410 .data_xfer = ata_data_xfer,
411 .irq_clear = ata_bmdma_irq_clear,
412 .irq_on = ata_irq_on,
413 .irq_ack = ata_irq_ack,
414 .scr_read = nv_scr_read,
415 .scr_write = nv_scr_write,
416 .port_start = ata_port_start,
417 .host_stop = nv_ck804_host_stop,
420 static const struct ata_port_operations nv_adma_ops = {
421 .port_disable = ata_port_disable,
422 .tf_load = ata_tf_load,
423 .tf_read = nv_adma_tf_read,
424 .check_atapi_dma = nv_adma_check_atapi_dma,
425 .exec_command = ata_exec_command,
426 .check_status = ata_check_status,
427 .dev_select = ata_std_dev_select,
428 .bmdma_setup = ata_bmdma_setup,
429 .bmdma_start = ata_bmdma_start,
430 .bmdma_stop = ata_bmdma_stop,
431 .bmdma_status = ata_bmdma_status,
432 .qc_prep = nv_adma_qc_prep,
433 .qc_issue = nv_adma_qc_issue,
434 .freeze = nv_adma_freeze,
435 .thaw = nv_adma_thaw,
436 .error_handler = nv_adma_error_handler,
437 .post_internal_cmd = nv_adma_post_internal_cmd,
438 .data_xfer = ata_data_xfer,
439 .irq_clear = nv_adma_irq_clear,
440 .irq_on = ata_irq_on,
441 .irq_ack = ata_irq_ack,
442 .scr_read = nv_scr_read,
443 .scr_write = nv_scr_write,
444 .port_start = nv_adma_port_start,
445 .port_stop = nv_adma_port_stop,
447 .port_suspend = nv_adma_port_suspend,
448 .port_resume = nv_adma_port_resume,
450 .host_stop = nv_adma_host_stop,
453 static const struct ata_port_info nv_port_info[] = {
457 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
458 ATA_FLAG_HRST_TO_RESUME,
459 .pio_mask = NV_PIO_MASK,
460 .mwdma_mask = NV_MWDMA_MASK,
461 .udma_mask = NV_UDMA_MASK,
462 .port_ops = &nv_generic_ops,
463 .irq_handler = nv_generic_interrupt,
468 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
469 ATA_FLAG_HRST_TO_RESUME,
470 .pio_mask = NV_PIO_MASK,
471 .mwdma_mask = NV_MWDMA_MASK,
472 .udma_mask = NV_UDMA_MASK,
473 .port_ops = &nv_nf2_ops,
474 .irq_handler = nv_nf2_interrupt,
479 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
480 ATA_FLAG_HRST_TO_RESUME,
481 .pio_mask = NV_PIO_MASK,
482 .mwdma_mask = NV_MWDMA_MASK,
483 .udma_mask = NV_UDMA_MASK,
484 .port_ops = &nv_ck804_ops,
485 .irq_handler = nv_ck804_interrupt,
490 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
491 ATA_FLAG_HRST_TO_RESUME |
492 ATA_FLAG_MMIO | ATA_FLAG_NCQ,
493 .pio_mask = NV_PIO_MASK,
494 .mwdma_mask = NV_MWDMA_MASK,
495 .udma_mask = NV_UDMA_MASK,
496 .port_ops = &nv_adma_ops,
497 .irq_handler = nv_adma_interrupt,
501 MODULE_AUTHOR("NVIDIA");
502 MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
503 MODULE_LICENSE("GPL");
504 MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
505 MODULE_VERSION(DRV_VERSION);
507 static int adma_enabled = 1;
509 static void nv_adma_register_mode(struct ata_port *ap)
511 struct nv_adma_port_priv *pp = ap->private_data;
512 void __iomem *mmio = pp->ctl_block;
516 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
519 status = readw(mmio + NV_ADMA_STAT);
520 while(!(status & NV_ADMA_STAT_IDLE) && count < 20) {
522 status = readw(mmio + NV_ADMA_STAT);
526 ata_port_printk(ap, KERN_WARNING,
527 "timeout waiting for ADMA IDLE, stat=0x%hx\n",
530 tmp = readw(mmio + NV_ADMA_CTL);
531 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
534 status = readw(mmio + NV_ADMA_STAT);
535 while(!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
537 status = readw(mmio + NV_ADMA_STAT);
541 ata_port_printk(ap, KERN_WARNING,
542 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
545 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
548 static void nv_adma_mode(struct ata_port *ap)
550 struct nv_adma_port_priv *pp = ap->private_data;
551 void __iomem *mmio = pp->ctl_block;
555 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
558 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
560 tmp = readw(mmio + NV_ADMA_CTL);
561 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
563 status = readw(mmio + NV_ADMA_STAT);
564 while(((status & NV_ADMA_STAT_LEGACY) ||
565 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
567 status = readw(mmio + NV_ADMA_STAT);
571 ata_port_printk(ap, KERN_WARNING,
572 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
575 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
578 static int nv_adma_slave_config(struct scsi_device *sdev)
580 struct ata_port *ap = ata_shost_to_port(sdev->host);
581 struct nv_adma_port_priv *pp = ap->private_data;
582 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
584 unsigned long segment_boundary;
585 unsigned short sg_tablesize;
588 u32 current_reg, new_reg, config_mask;
590 rc = ata_scsi_slave_config(sdev);
592 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
593 /* Not a proper libata device, ignore */
596 if (ap->device[sdev->id].class == ATA_DEV_ATAPI) {
598 * NVIDIA reports that ADMA mode does not support ATAPI commands.
599 * Therefore ATAPI commands are sent through the legacy interface.
600 * However, the legacy interface only supports 32-bit DMA.
601 * Restrict DMA parameters as required by the legacy interface
602 * when an ATAPI device is connected.
604 bounce_limit = ATA_DMA_MASK;
605 segment_boundary = ATA_DMA_BOUNDARY;
606 /* Subtract 1 since an extra entry may be needed for padding, see
608 sg_tablesize = LIBATA_MAX_PRD - 1;
610 /* Since the legacy DMA engine is in use, we need to disable ADMA
613 nv_adma_register_mode(ap);
616 bounce_limit = *ap->dev->dma_mask;
617 segment_boundary = NV_ADMA_DMA_BOUNDARY;
618 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
622 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, ¤t_reg);
625 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
626 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
628 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
629 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
632 new_reg = current_reg | config_mask;
633 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
636 new_reg = current_reg & ~config_mask;
637 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
640 if(current_reg != new_reg)
641 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
643 blk_queue_bounce_limit(sdev->request_queue, bounce_limit);
644 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
645 blk_queue_max_hw_segments(sdev->request_queue, sg_tablesize);
646 ata_port_printk(ap, KERN_INFO,
647 "bounce limit 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
648 (unsigned long long)bounce_limit, segment_boundary, sg_tablesize);
652 static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
654 struct nv_adma_port_priv *pp = qc->ap->private_data;
655 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
658 static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
660 /* Since commands where a result TF is requested are not
661 executed in ADMA mode, the only time this function will be called
662 in ADMA mode will be if a command fails. In this case we
663 don't care about going into register mode with ADMA commands
664 pending, as the commands will all shortly be aborted anyway. */
665 nv_adma_register_mode(ap);
670 static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
672 unsigned int idx = 0;
674 if(tf->flags & ATA_TFLAG_ISADDR) {
675 if (tf->flags & ATA_TFLAG_LBA48) {
676 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
677 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
678 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
679 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
680 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
681 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
683 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
685 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
686 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
687 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
688 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
691 if(tf->flags & ATA_TFLAG_DEVICE)
692 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
694 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
697 cpb[idx++] = cpu_to_le16(IGN);
702 static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
704 struct nv_adma_port_priv *pp = ap->private_data;
705 u8 flags = pp->cpb[cpb_num].resp_flags;
707 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
709 if (unlikely((force_err ||
710 flags & (NV_CPB_RESP_ATA_ERR |
711 NV_CPB_RESP_CMD_ERR |
712 NV_CPB_RESP_CPB_ERR)))) {
713 struct ata_eh_info *ehi = &ap->eh_info;
716 ata_ehi_clear_desc(ehi);
717 ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x", flags );
718 if (flags & NV_CPB_RESP_ATA_ERR) {
719 ata_ehi_push_desc(ehi, ": ATA error");
720 ehi->err_mask |= AC_ERR_DEV;
721 } else if (flags & NV_CPB_RESP_CMD_ERR) {
722 ata_ehi_push_desc(ehi, ": CMD error");
723 ehi->err_mask |= AC_ERR_DEV;
724 } else if (flags & NV_CPB_RESP_CPB_ERR) {
725 ata_ehi_push_desc(ehi, ": CPB error");
726 ehi->err_mask |= AC_ERR_SYSTEM;
729 /* notifier error, but no error in CPB flags? */
730 ehi->err_mask |= AC_ERR_OTHER;
733 /* Kill all commands. EH will determine what actually failed. */
741 if (likely(flags & NV_CPB_RESP_DONE)) {
742 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num);
743 VPRINTK("CPB flags done, flags=0x%x\n", flags);
745 DPRINTK("Completing qc from tag %d\n",cpb_num);
748 struct ata_eh_info *ehi = &ap->eh_info;
749 /* Notifier bits set without a command may indicate the drive
750 is misbehaving. Raise host state machine violation on this
752 ata_port_printk(ap, KERN_ERR, "notifier for tag %d with no command?\n",
754 ehi->err_mask |= AC_ERR_HSM;
755 ehi->action |= ATA_EH_SOFTRESET;
763 static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
765 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
767 /* freeze if hotplugged */
768 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
773 /* bail out if not our interrupt */
774 if (!(irq_stat & NV_INT_DEV))
777 /* DEV interrupt w/ no active qc? */
778 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
779 ata_check_status(ap);
783 /* handle interrupt */
784 return ata_host_intr(ap, qc);
787 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
789 struct ata_host *host = dev_instance;
791 u32 notifier_clears[2];
793 spin_lock(&host->lock);
795 for (i = 0; i < host->n_ports; i++) {
796 struct ata_port *ap = host->ports[i];
797 notifier_clears[i] = 0;
799 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
800 struct nv_adma_port_priv *pp = ap->private_data;
801 void __iomem *mmio = pp->ctl_block;
804 u32 notifier, notifier_error;
806 /* if ADMA is disabled, use standard ata interrupt handler */
807 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
808 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
809 >> (NV_INT_PORT_SHIFT * i);
810 handled += nv_host_intr(ap, irq_stat);
814 /* if in ATA register mode, check for standard interrupts */
815 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
816 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
817 >> (NV_INT_PORT_SHIFT * i);
818 if(ata_tag_valid(ap->active_tag))
819 /** NV_INT_DEV indication seems unreliable at times
820 at least in ADMA mode. Force it on always when a
821 command is active, to prevent losing interrupts. */
822 irq_stat |= NV_INT_DEV;
823 handled += nv_host_intr(ap, irq_stat);
826 notifier = readl(mmio + NV_ADMA_NOTIFIER);
827 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
828 notifier_clears[i] = notifier | notifier_error;
830 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
832 if( !NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
837 status = readw(mmio + NV_ADMA_STAT);
839 /* Clear status. Ensure the controller sees the clearing before we start
840 looking at any of the CPB statuses, so that any CPB completions after
841 this point in the handler will raise another interrupt. */
842 writew(status, mmio + NV_ADMA_STAT);
843 readw(mmio + NV_ADMA_STAT); /* flush posted write */
846 handled++; /* irq handled if we got here */
848 /* freeze if hotplugged or controller error */
849 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
850 NV_ADMA_STAT_HOTUNPLUG |
851 NV_ADMA_STAT_TIMEOUT |
852 NV_ADMA_STAT_SERROR))) {
853 struct ata_eh_info *ehi = &ap->eh_info;
855 ata_ehi_clear_desc(ehi);
856 ata_ehi_push_desc(ehi, "ADMA status 0x%08x", status );
857 if (status & NV_ADMA_STAT_TIMEOUT) {
858 ehi->err_mask |= AC_ERR_SYSTEM;
859 ata_ehi_push_desc(ehi, ": timeout");
860 } else if (status & NV_ADMA_STAT_HOTPLUG) {
861 ata_ehi_hotplugged(ehi);
862 ata_ehi_push_desc(ehi, ": hotplug");
863 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
864 ata_ehi_hotplugged(ehi);
865 ata_ehi_push_desc(ehi, ": hot unplug");
866 } else if (status & NV_ADMA_STAT_SERROR) {
867 /* let libata analyze SError and figure out the cause */
868 ata_ehi_push_desc(ehi, ": SError");
874 if (status & (NV_ADMA_STAT_DONE |
875 NV_ADMA_STAT_CPBERR)) {
879 if(ata_tag_valid(ap->active_tag))
880 check_commands = 1 << ap->active_tag;
882 check_commands = ap->sactive;
884 /** Check CPBs for completed commands */
885 while ((pos = ffs(check_commands)) && !error) {
887 error = nv_adma_check_cpb(ap, pos,
888 notifier_error & (1 << pos) );
889 check_commands &= ~(1 << pos );
895 if(notifier_clears[0] || notifier_clears[1]) {
896 /* Note: Both notifier clear registers must be written
897 if either is set, even if one is zero, according to NVIDIA. */
898 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
899 writel(notifier_clears[0], pp->notifier_clear_block);
900 pp = host->ports[1]->private_data;
901 writel(notifier_clears[1], pp->notifier_clear_block);
904 spin_unlock(&host->lock);
906 return IRQ_RETVAL(handled);
909 static void nv_adma_freeze(struct ata_port *ap)
911 struct nv_adma_port_priv *pp = ap->private_data;
912 void __iomem *mmio = pp->ctl_block;
917 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
920 /* clear any outstanding CK804 notifications */
921 writeb( NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
922 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
924 /* Disable interrupt */
925 tmp = readw(mmio + NV_ADMA_CTL);
926 writew( tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
928 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
931 static void nv_adma_thaw(struct ata_port *ap)
933 struct nv_adma_port_priv *pp = ap->private_data;
934 void __iomem *mmio = pp->ctl_block;
939 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
942 /* Enable interrupt */
943 tmp = readw(mmio + NV_ADMA_CTL);
944 writew( tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
946 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
949 static void nv_adma_irq_clear(struct ata_port *ap)
951 struct nv_adma_port_priv *pp = ap->private_data;
952 void __iomem *mmio = pp->ctl_block;
953 u32 notifier_clears[2];
955 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
956 ata_bmdma_irq_clear(ap);
960 /* clear any outstanding CK804 notifications */
961 writeb( NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
962 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
964 /* clear ADMA status */
965 writew(0xffff, mmio + NV_ADMA_STAT);
967 /* clear notifiers - note both ports need to be written with
968 something even though we are only clearing on one */
969 if (ap->port_no == 0) {
970 notifier_clears[0] = 0xFFFFFFFF;
971 notifier_clears[1] = 0;
973 notifier_clears[0] = 0;
974 notifier_clears[1] = 0xFFFFFFFF;
976 pp = ap->host->ports[0]->private_data;
977 writel(notifier_clears[0], pp->notifier_clear_block);
978 pp = ap->host->ports[1]->private_data;
979 writel(notifier_clears[1], pp->notifier_clear_block);
982 static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
984 struct nv_adma_port_priv *pp = qc->ap->private_data;
986 if(pp->flags & NV_ADMA_PORT_REGISTER_MODE)
987 ata_bmdma_post_internal_cmd(qc);
990 static int nv_adma_port_start(struct ata_port *ap)
992 struct device *dev = ap->host->dev;
993 struct nv_adma_port_priv *pp;
1002 rc = ata_port_start(ap);
1006 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1010 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
1011 ap->port_no * NV_ADMA_PORT_SIZE;
1012 pp->ctl_block = mmio;
1013 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
1014 pp->notifier_clear_block = pp->gen_block +
1015 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1017 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1018 &mem_dma, GFP_KERNEL);
1021 memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ);
1024 * First item in chunk of DMA memory:
1025 * 128-byte command parameter block (CPB)
1026 * one for each command tag
1029 pp->cpb_dma = mem_dma;
1031 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1032 writel((mem_dma >> 16 ) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1034 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1035 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1038 * Second item: block of ADMA_SGTBL_LEN s/g entries
1041 pp->aprd_dma = mem_dma;
1043 ap->private_data = pp;
1045 /* clear any outstanding interrupt conditions */
1046 writew(0xffff, mmio + NV_ADMA_STAT);
1048 /* initialize port variables */
1049 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1051 /* clear CPB fetch count */
1052 writew(0, mmio + NV_ADMA_CPB_COUNT);
1054 /* clear GO for register mode, enable interrupt */
1055 tmp = readw(mmio + NV_ADMA_CTL);
1056 writew( (tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1057 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1059 tmp = readw(mmio + NV_ADMA_CTL);
1060 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1061 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1063 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1064 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1069 static void nv_adma_port_stop(struct ata_port *ap)
1071 struct nv_adma_port_priv *pp = ap->private_data;
1072 void __iomem *mmio = pp->ctl_block;
1075 writew(0, mmio + NV_ADMA_CTL);
1079 static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1081 struct nv_adma_port_priv *pp = ap->private_data;
1082 void __iomem *mmio = pp->ctl_block;
1084 /* Go to register mode - clears GO */
1085 nv_adma_register_mode(ap);
1087 /* clear CPB fetch count */
1088 writew(0, mmio + NV_ADMA_CPB_COUNT);
1090 /* disable interrupt, shut down port */
1091 writew(0, mmio + NV_ADMA_CTL);
1096 static int nv_adma_port_resume(struct ata_port *ap)
1098 struct nv_adma_port_priv *pp = ap->private_data;
1099 void __iomem *mmio = pp->ctl_block;
1102 /* set CPB block location */
1103 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
1104 writel((pp->cpb_dma >> 16 ) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
1106 /* clear any outstanding interrupt conditions */
1107 writew(0xffff, mmio + NV_ADMA_STAT);
1109 /* initialize port variables */
1110 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1112 /* clear CPB fetch count */
1113 writew(0, mmio + NV_ADMA_CPB_COUNT);
1115 /* clear GO for register mode, enable interrupt */
1116 tmp = readw(mmio + NV_ADMA_CTL);
1117 writew( (tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1118 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
1120 tmp = readw(mmio + NV_ADMA_CTL);
1121 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1122 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1124 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1125 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1131 static void nv_adma_setup_port(struct ata_port *ap)
1133 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1134 struct ata_ioports *ioport = &ap->ioaddr;
1138 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
1140 ioport->cmd_addr = mmio;
1141 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
1142 ioport->error_addr =
1143 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1144 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1145 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1146 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1147 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1148 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
1149 ioport->status_addr =
1150 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
1151 ioport->altstatus_addr =
1152 ioport->ctl_addr = mmio + 0x20;
1155 static int nv_adma_host_init(struct ata_host *host)
1157 struct pci_dev *pdev = to_pci_dev(host->dev);
1163 /* enable ADMA on the ports */
1164 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1165 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1166 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1167 NV_MCP_SATA_CFG_20_PORT1_EN |
1168 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1170 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1172 for (i = 0; i < host->n_ports; i++)
1173 nv_adma_setup_port(host->ports[i]);
1178 static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1179 struct scatterlist *sg,
1181 struct nv_adma_prd *aprd)
1184 if (qc->tf.flags & ATA_TFLAG_WRITE)
1185 flags |= NV_APRD_WRITE;
1186 if (idx == qc->n_elem - 1)
1187 flags |= NV_APRD_END;
1189 flags |= NV_APRD_CONT;
1191 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1192 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
1193 aprd->flags = flags;
1194 aprd->packet_len = 0;
1197 static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1199 struct nv_adma_port_priv *pp = qc->ap->private_data;
1201 struct nv_adma_prd *aprd;
1202 struct scatterlist *sg;
1208 ata_for_each_sg(sg, qc) {
1209 aprd = (idx < 5) ? &cpb->aprd[idx] : &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (idx-5)];
1210 nv_adma_fill_aprd(qc, sg, idx, aprd);
1214 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag)));
1216 cpb->next_aprd = cpu_to_le64(0);
1219 static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1221 struct nv_adma_port_priv *pp = qc->ap->private_data;
1223 /* ADMA engine can only be used for non-ATAPI DMA commands,
1224 or interrupt-driven no-data commands, where a result taskfile
1226 if((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
1227 (qc->tf.flags & ATA_TFLAG_POLLING) ||
1228 (qc->flags & ATA_QCFLAG_RESULT_TF))
1231 if((qc->flags & ATA_QCFLAG_DMAMAP) ||
1232 (qc->tf.protocol == ATA_PROT_NODATA))
1238 static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1240 struct nv_adma_port_priv *pp = qc->ap->private_data;
1241 struct nv_adma_cpb *cpb = &pp->cpb[qc->tag];
1242 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
1245 if (nv_adma_use_reg_mode(qc)) {
1246 nv_adma_register_mode(qc->ap);
1251 cpb->resp_flags = NV_CPB_RESP_DONE;
1258 cpb->next_cpb_idx = 0;
1260 /* turn on NCQ flags for NCQ commands */
1261 if (qc->tf.protocol == ATA_PROT_NCQ)
1262 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1264 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1266 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1268 if(qc->flags & ATA_QCFLAG_DMAMAP) {
1269 nv_adma_fill_sg(qc, cpb);
1270 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1272 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
1274 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID until we are
1275 finished filling in all of the contents */
1277 cpb->ctl_flags = ctl_flags;
1279 cpb->resp_flags = 0;
1282 static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1284 struct nv_adma_port_priv *pp = qc->ap->private_data;
1285 void __iomem *mmio = pp->ctl_block;
1286 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
1290 if (nv_adma_use_reg_mode(qc)) {
1291 /* use ATA register mode */
1292 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
1293 nv_adma_register_mode(qc->ap);
1294 return ata_qc_issue_prot(qc);
1296 nv_adma_mode(qc->ap);
1298 /* write append register, command tag in lower 8 bits
1299 and (number of cpbs to append -1) in top 8 bits */
1302 if(curr_ncq != pp->last_issue_ncq) {
1303 /* Seems to need some delay before switching between NCQ and non-NCQ
1304 commands, else we get command timeouts and such. */
1306 pp->last_issue_ncq = curr_ncq;
1309 writew(qc->tag, mmio + NV_ADMA_APPEND);
1311 DPRINTK("Issued tag %u\n",qc->tag);
1316 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1318 struct ata_host *host = dev_instance;
1320 unsigned int handled = 0;
1321 unsigned long flags;
1323 spin_lock_irqsave(&host->lock, flags);
1325 for (i = 0; i < host->n_ports; i++) {
1326 struct ata_port *ap;
1328 ap = host->ports[i];
1330 !(ap->flags & ATA_FLAG_DISABLED)) {
1331 struct ata_queued_cmd *qc;
1333 qc = ata_qc_from_tag(ap, ap->active_tag);
1334 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
1335 handled += ata_host_intr(ap, qc);
1337 // No request pending? Clear interrupt status
1338 // anyway, in case there's one pending.
1339 ap->ops->check_status(ap);
1344 spin_unlock_irqrestore(&host->lock, flags);
1346 return IRQ_RETVAL(handled);
1349 static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
1353 for (i = 0; i < host->n_ports; i++) {
1354 struct ata_port *ap = host->ports[i];
1356 if (ap && !(ap->flags & ATA_FLAG_DISABLED))
1357 handled += nv_host_intr(ap, irq_stat);
1359 irq_stat >>= NV_INT_PORT_SHIFT;
1362 return IRQ_RETVAL(handled);
1365 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
1367 struct ata_host *host = dev_instance;
1371 spin_lock(&host->lock);
1372 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
1373 ret = nv_do_interrupt(host, irq_stat);
1374 spin_unlock(&host->lock);
1379 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
1381 struct ata_host *host = dev_instance;
1385 spin_lock(&host->lock);
1386 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1387 ret = nv_do_interrupt(host, irq_stat);
1388 spin_unlock(&host->lock);
1393 static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg)
1395 if (sc_reg > SCR_CONTROL)
1398 return ioread32(ap->ioaddr.scr_addr + (sc_reg * 4));
1401 static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
1403 if (sc_reg > SCR_CONTROL)
1406 iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4));
1409 static void nv_nf2_freeze(struct ata_port *ap)
1411 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1412 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1415 mask = ioread8(scr_addr + NV_INT_ENABLE);
1416 mask &= ~(NV_INT_ALL << shift);
1417 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1420 static void nv_nf2_thaw(struct ata_port *ap)
1422 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
1423 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1426 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
1428 mask = ioread8(scr_addr + NV_INT_ENABLE);
1429 mask |= (NV_INT_MASK << shift);
1430 iowrite8(mask, scr_addr + NV_INT_ENABLE);
1433 static void nv_ck804_freeze(struct ata_port *ap)
1435 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1436 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1439 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1440 mask &= ~(NV_INT_ALL << shift);
1441 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1444 static void nv_ck804_thaw(struct ata_port *ap)
1446 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1447 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1450 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1452 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1453 mask |= (NV_INT_MASK << shift);
1454 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1457 static int nv_hardreset(struct ata_port *ap, unsigned int *class,
1458 unsigned long deadline)
1462 /* SATA hardreset fails to retrieve proper device signature on
1463 * some controllers. Don't classify on hardreset. For more
1464 * info, see http://bugme.osdl.org/show_bug.cgi?id=3352
1466 return sata_std_hardreset(ap, &dummy, deadline);
1469 static void nv_error_handler(struct ata_port *ap)
1471 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
1472 nv_hardreset, ata_std_postreset);
1475 static void nv_adma_error_handler(struct ata_port *ap)
1477 struct nv_adma_port_priv *pp = ap->private_data;
1478 if(!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
1479 void __iomem *mmio = pp->ctl_block;
1483 if(ata_tag_valid(ap->active_tag) || ap->sactive) {
1484 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1485 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1486 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1487 u32 status = readw(mmio + NV_ADMA_STAT);
1488 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1489 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
1491 ata_port_printk(ap, KERN_ERR, "EH in ADMA mode, notifier 0x%X "
1492 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1493 "next cpb count 0x%X next cpb idx 0x%x\n",
1494 notifier, notifier_error, gen_ctl, status,
1495 cpb_count, next_cpb_idx);
1497 for( i=0;i<NV_ADMA_MAX_CPBS;i++) {
1498 struct nv_adma_cpb *cpb = &pp->cpb[i];
1499 if( (ata_tag_valid(ap->active_tag) && i == ap->active_tag) ||
1500 ap->sactive & (1 << i) )
1501 ata_port_printk(ap, KERN_ERR,
1502 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1503 i, cpb->ctl_flags, cpb->resp_flags);
1507 /* Push us back into port register mode for error handling. */
1508 nv_adma_register_mode(ap);
1510 /* Mark all of the CPBs as invalid to prevent them from being executed */
1511 for( i=0;i<NV_ADMA_MAX_CPBS;i++)
1512 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1514 /* clear CPB fetch count */
1515 writew(0, mmio + NV_ADMA_CPB_COUNT);
1518 tmp = readw(mmio + NV_ADMA_CTL);
1519 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1520 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1522 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
1523 readw( mmio + NV_ADMA_CTL ); /* flush posted write */
1526 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
1527 nv_hardreset, ata_std_postreset);
1530 static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1532 static int printed_version = 0;
1533 const struct ata_port_info *ppi[] = { NULL, NULL };
1534 struct ata_host *host;
1535 struct nv_host_priv *hpriv;
1539 unsigned long type = ent->driver_data;
1541 // Make sure this is a SATA controller by counting the number of bars
1542 // (NVIDIA SATA controllers will always have six bars). Otherwise,
1543 // it's an IDE controller and we ignore it.
1544 for (bar=0; bar<6; bar++)
1545 if (pci_resource_start(pdev, bar) == 0)
1548 if (!printed_version++)
1549 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1551 rc = pcim_enable_device(pdev);
1555 /* determine type and allocate host */
1556 if (type >= CK804 && adma_enabled) {
1557 dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n");
1561 ppi[0] = &nv_port_info[type];
1562 rc = ata_pci_prepare_native_host(pdev, ppi, &host);
1566 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
1570 host->private_data = hpriv;
1572 /* set 64bit dma masks, may fail */
1574 if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0)
1575 pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1578 /* request and iomap NV_MMIO_BAR */
1579 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
1583 /* configure SCR access */
1584 base = host->iomap[NV_MMIO_BAR];
1585 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
1586 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
1588 /* enable SATA space for CK804 */
1589 if (type >= CK804) {
1592 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
1593 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1594 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1599 rc = nv_adma_host_init(host);
1604 pci_set_master(pdev);
1605 return ata_host_activate(host, pdev->irq, ppi[0]->irq_handler,
1606 IRQF_SHARED, ppi[0]->sht);
1610 static int nv_pci_device_resume(struct pci_dev *pdev)
1612 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1613 struct nv_host_priv *hpriv = host->private_data;
1616 rc = ata_pci_device_do_resume(pdev);
1620 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
1621 if(hpriv->type >= CK804) {
1624 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
1625 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1626 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1628 if(hpriv->type == ADMA) {
1630 struct nv_adma_port_priv *pp;
1631 /* enable/disable ADMA on the ports appropriately */
1632 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1634 pp = host->ports[0]->private_data;
1635 if(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1636 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
1637 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
1639 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
1640 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
1641 pp = host->ports[1]->private_data;
1642 if(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1643 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
1644 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1646 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
1647 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1649 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1653 ata_host_resume(host);
1659 static void nv_ck804_host_stop(struct ata_host *host)
1661 struct pci_dev *pdev = to_pci_dev(host->dev);
1664 /* disable SATA space for CK804 */
1665 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val);
1666 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
1667 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
1670 static void nv_adma_host_stop(struct ata_host *host)
1672 struct pci_dev *pdev = to_pci_dev(host->dev);
1675 /* disable ADMA on the ports */
1676 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1677 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
1678 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1679 NV_MCP_SATA_CFG_20_PORT1_EN |
1680 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
1682 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1684 nv_ck804_host_stop(host);
1687 static int __init nv_init(void)
1689 return pci_register_driver(&nv_pci_driver);
1692 static void __exit nv_exit(void)
1694 pci_unregister_driver(&nv_pci_driver);
1697 module_init(nv_init);
1698 module_exit(nv_exit);
1699 module_param_named(adma, adma_enabled, bool, 0444);
1700 MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: true)");