blob: 684fe04dbbb7f8200f710c578206d83bd6239030 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * sata_nv.c - NVIDIA nForce SATA
3 *
4 * Copyright 2004 NVIDIA Corp. All rights reserved.
5 * Copyright 2004 Andrew Chew
6 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
Jeff Garzikaa7e16d2005-08-29 15:12:56 -04008 * 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)
11 * any later version.
12 *
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.
17 *
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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070021 *
Jeff Garzikaf36d7f2005-08-28 20:18:39 -040022 *
23 * libata documentation is available via 'make {ps|pdf}docs',
24 * as Documentation/DocBook/libata.*
25 *
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,
30 * hotplug info, etc.
31 *
Robert Hancockfbbb2622006-10-27 19:08:41 -070032 * 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.
36 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 */
38
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#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>
Jeff Garzika9524a72005-10-30 14:39:11 -050046#include <linux/device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <scsi/scsi_host.h>
Robert Hancockfbbb2622006-10-27 19:08:41 -070048#include <scsi/scsi_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/libata.h>
50
51#define DRV_NAME "sata_nv"
Jeff Garzik2a3103c2007-08-31 04:54:06 -040052#define DRV_VERSION "3.5"
Robert Hancockfbbb2622006-10-27 19:08:41 -070053
54#define NV_ADMA_DMA_BOUNDARY 0xffffffffUL
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
Jeff Garzik10ad05d2006-03-22 23:50:50 -050056enum {
Tejun Heo0d5ff562007-02-01 15:06:36 +090057 NV_MMIO_BAR = 5,
58
Jeff Garzik10ad05d2006-03-22 23:50:50 -050059 NV_PORTS = 2,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +010060 NV_PIO_MASK = ATA_PIO4,
61 NV_MWDMA_MASK = ATA_MWDMA2,
62 NV_UDMA_MASK = ATA_UDMA6,
Jeff Garzik10ad05d2006-03-22 23:50:50 -050063 NV_PORT0_SCR_REG_OFFSET = 0x00,
64 NV_PORT1_SCR_REG_OFFSET = 0x40,
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Tejun Heo27e4b272006-06-17 15:49:55 +090066 /* INT_STATUS/ENABLE */
Jeff Garzik10ad05d2006-03-22 23:50:50 -050067 NV_INT_STATUS = 0x10,
Jeff Garzik10ad05d2006-03-22 23:50:50 -050068 NV_INT_ENABLE = 0x11,
Tejun Heo27e4b272006-06-17 15:49:55 +090069 NV_INT_STATUS_CK804 = 0x440,
Jeff Garzik10ad05d2006-03-22 23:50:50 -050070 NV_INT_ENABLE_CK804 = 0x441,
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
Tejun Heo27e4b272006-06-17 15:49:55 +090072 /* INT_STATUS/ENABLE bits */
73 NV_INT_DEV = 0x01,
74 NV_INT_PM = 0x02,
75 NV_INT_ADDED = 0x04,
76 NV_INT_REMOVED = 0x08,
77
78 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
79
Tejun Heo39f87582006-06-17 15:49:56 +090080 NV_INT_ALL = 0x0f,
Tejun Heo5a44eff2006-06-17 15:49:56 +090081 NV_INT_MASK = NV_INT_DEV |
82 NV_INT_ADDED | NV_INT_REMOVED,
Tejun Heo39f87582006-06-17 15:49:56 +090083
Tejun Heo27e4b272006-06-17 15:49:55 +090084 /* INT_CONFIG */
Jeff Garzik10ad05d2006-03-22 23:50:50 -050085 NV_INT_CONFIG = 0x12,
86 NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
Jeff Garzik10ad05d2006-03-22 23:50:50 -050088 // For PCI config register 20
89 NV_MCP_SATA_CFG_20 = 0x50,
90 NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04,
Robert Hancockfbbb2622006-10-27 19:08:41 -070091 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),
95
96 NV_ADMA_MAX_CPBS = 32,
97 NV_ADMA_CPB_SZ = 128,
98 NV_ADMA_APRD_SZ = 16,
99 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
100 NV_ADMA_APRD_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),
105
106 /* BAR5 offset to ADMA general registers */
107 NV_ADMA_GEN = 0x400,
108 NV_ADMA_GEN_CTL = 0x00,
109 NV_ADMA_NOTIFIER_CLEAR = 0x30,
110
111 /* BAR5 offset to ADMA ports */
112 NV_ADMA_PORT = 0x480,
113
114 /* size of ADMA port register space */
115 NV_ADMA_PORT_SIZE = 0x100,
116
117 /* ADMA port registers */
118 NV_ADMA_CTL = 0x40,
119 NV_ADMA_CPB_COUNT = 0x42,
120 NV_ADMA_NEXT_CPB_IDX = 0x43,
121 NV_ADMA_STAT = 0x44,
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,
127
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),
135
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),
141
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),
148
149 /* APRD flags */
150 NV_APRD_WRITE = (1 << 1),
151 NV_APRD_END = (1 << 2),
152 NV_APRD_CONT = (1 << 3),
153
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 |
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400166 NV_ADMA_STAT_TIMEOUT,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700167
168 /* port flags */
169 NV_ADMA_PORT_REGISTER_MODE = (1 << 0),
Robert Hancock2dec7552006-11-26 14:20:19 -0600170 NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1),
Robert Hancockfbbb2622006-10-27 19:08:41 -0700171
Kuan Luof140f0f2007-10-15 15:16:53 -0400172 /* MCP55 reg offset */
173 NV_CTL_MCP55 = 0x400,
174 NV_INT_STATUS_MCP55 = 0x440,
175 NV_INT_ENABLE_MCP55 = 0x444,
176 NV_NCQ_REG_MCP55 = 0x448,
177
178 /* MCP55 */
179 NV_INT_ALL_MCP55 = 0xffff,
180 NV_INT_PORT_SHIFT_MCP55 = 16, /* each port occupies 16 bits */
181 NV_INT_MASK_MCP55 = NV_INT_ALL_MCP55 & 0xfffd,
182
183 /* SWNCQ ENABLE BITS*/
184 NV_CTL_PRI_SWNCQ = 0x02,
185 NV_CTL_SEC_SWNCQ = 0x04,
186
187 /* SW NCQ status bits*/
188 NV_SWNCQ_IRQ_DEV = (1 << 0),
189 NV_SWNCQ_IRQ_PM = (1 << 1),
190 NV_SWNCQ_IRQ_ADDED = (1 << 2),
191 NV_SWNCQ_IRQ_REMOVED = (1 << 3),
192
193 NV_SWNCQ_IRQ_BACKOUT = (1 << 4),
194 NV_SWNCQ_IRQ_SDBFIS = (1 << 5),
195 NV_SWNCQ_IRQ_DHREGFIS = (1 << 6),
196 NV_SWNCQ_IRQ_DMASETUP = (1 << 7),
197
198 NV_SWNCQ_IRQ_HOTPLUG = NV_SWNCQ_IRQ_ADDED |
199 NV_SWNCQ_IRQ_REMOVED,
200
Jeff Garzik10ad05d2006-03-22 23:50:50 -0500201};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202
Robert Hancockfbbb2622006-10-27 19:08:41 -0700203/* ADMA Physical Region Descriptor - one SG segment */
204struct nv_adma_prd {
205 __le64 addr;
206 __le32 len;
207 u8 flags;
208 u8 packet_len;
209 __le16 reserved;
210};
211
212enum nv_adma_regbits {
213 CMDEND = (1 << 15), /* end of command list */
214 WNB = (1 << 14), /* wait-not-BSY */
215 IGN = (1 << 13), /* ignore this entry */
216 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
217 DA2 = (1 << (2 + 8)),
218 DA1 = (1 << (1 + 8)),
219 DA0 = (1 << (0 + 8)),
220};
221
222/* ADMA Command Parameter Block
223 The first 5 SG segments are stored inside the Command Parameter Block itself.
224 If there are more than 5 segments the remainder are stored in a separate
225 memory area indicated by next_aprd. */
226struct nv_adma_cpb {
227 u8 resp_flags; /* 0 */
228 u8 reserved1; /* 1 */
229 u8 ctl_flags; /* 2 */
230 /* len is length of taskfile in 64 bit words */
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400231 u8 len; /* 3 */
Robert Hancockfbbb2622006-10-27 19:08:41 -0700232 u8 tag; /* 4 */
233 u8 next_cpb_idx; /* 5 */
234 __le16 reserved2; /* 6-7 */
235 __le16 tf[12]; /* 8-31 */
236 struct nv_adma_prd aprd[5]; /* 32-111 */
237 __le64 next_aprd; /* 112-119 */
238 __le64 reserved3; /* 120-127 */
239};
240
241
242struct nv_adma_port_priv {
243 struct nv_adma_cpb *cpb;
244 dma_addr_t cpb_dma;
245 struct nv_adma_prd *aprd;
246 dma_addr_t aprd_dma;
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400247 void __iomem *ctl_block;
248 void __iomem *gen_block;
249 void __iomem *notifier_clear_block;
Robert Hancock8959d302008-02-04 19:39:02 -0600250 u64 adma_dma_mask;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700251 u8 flags;
Robert Hancock5e5c74a2007-02-19 18:42:30 -0600252 int last_issue_ncq;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700253};
254
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600255struct nv_host_priv {
256 unsigned long type;
257};
258
Kuan Luof140f0f2007-10-15 15:16:53 -0400259struct defer_queue {
260 u32 defer_bits;
261 unsigned int head;
262 unsigned int tail;
263 unsigned int tag[ATA_MAX_QUEUE];
264};
265
266enum ncq_saw_flag_list {
267 ncq_saw_d2h = (1U << 0),
268 ncq_saw_dmas = (1U << 1),
269 ncq_saw_sdb = (1U << 2),
270 ncq_saw_backout = (1U << 3),
271};
272
273struct nv_swncq_port_priv {
274 struct ata_prd *prd; /* our SG list */
275 dma_addr_t prd_dma; /* and its DMA mapping */
276 void __iomem *sactive_block;
277 void __iomem *irq_block;
278 void __iomem *tag_block;
279 u32 qc_active;
280
281 unsigned int last_issue_tag;
282
283 /* fifo circular queue to store deferral command */
284 struct defer_queue defer_queue;
285
286 /* for NCQ interrupt analysis */
287 u32 dhfis_bits;
288 u32 dmafis_bits;
289 u32 sdbfis_bits;
290
291 unsigned int ncq_flags;
292};
293
294
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400295#define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & (1 << (19 + (12 * (PORT)))))
Robert Hancockfbbb2622006-10-27 19:08:41 -0700296
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400297static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
Tejun Heo438ac6d2007-03-02 17:31:26 +0900298#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600299static int nv_pci_device_resume(struct pci_dev *pdev);
Tejun Heo438ac6d2007-03-02 17:31:26 +0900300#endif
Jeff Garzikcca39742006-08-24 03:19:22 -0400301static void nv_ck804_host_stop(struct ata_host *host);
David Howells7d12e782006-10-05 14:55:46 +0100302static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
303static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
304static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
Tejun Heo82ef04f2008-07-31 17:02:40 +0900305static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
306static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307
Tejun Heo7f4774b2009-06-10 16:29:07 +0900308static int nv_hardreset(struct ata_link *link, unsigned int *class,
309 unsigned long deadline);
Tejun Heo39f87582006-06-17 15:49:56 +0900310static void nv_nf2_freeze(struct ata_port *ap);
311static void nv_nf2_thaw(struct ata_port *ap);
312static void nv_ck804_freeze(struct ata_port *ap);
313static void nv_ck804_thaw(struct ata_port *ap);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700314static int nv_adma_slave_config(struct scsi_device *sdev);
Robert Hancock2dec7552006-11-26 14:20:19 -0600315static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700316static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
317static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
318static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
319static void nv_adma_irq_clear(struct ata_port *ap);
320static int nv_adma_port_start(struct ata_port *ap);
321static void nv_adma_port_stop(struct ata_port *ap);
Tejun Heo438ac6d2007-03-02 17:31:26 +0900322#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600323static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
324static int nv_adma_port_resume(struct ata_port *ap);
Tejun Heo438ac6d2007-03-02 17:31:26 +0900325#endif
Robert Hancock53014e22007-05-05 15:36:36 -0600326static void nv_adma_freeze(struct ata_port *ap);
327static void nv_adma_thaw(struct ata_port *ap);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700328static void nv_adma_error_handler(struct ata_port *ap);
329static void nv_adma_host_stop(struct ata_host *host);
Robert Hancockf5ecac22007-02-20 21:49:10 -0600330static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
Robert Hancockf2fb3442007-03-26 21:43:36 -0800331static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
Tejun Heo39f87582006-06-17 15:49:56 +0900332
Kuan Luof140f0f2007-10-15 15:16:53 -0400333static void nv_mcp55_thaw(struct ata_port *ap);
334static void nv_mcp55_freeze(struct ata_port *ap);
335static void nv_swncq_error_handler(struct ata_port *ap);
336static int nv_swncq_slave_config(struct scsi_device *sdev);
337static int nv_swncq_port_start(struct ata_port *ap);
338static void nv_swncq_qc_prep(struct ata_queued_cmd *qc);
339static void nv_swncq_fill_sg(struct ata_queued_cmd *qc);
340static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc);
341static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis);
342static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance);
343#ifdef CONFIG_PM
344static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg);
345static int nv_swncq_port_resume(struct ata_port *ap);
346#endif
347
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348enum nv_host_type
349{
350 GENERIC,
351 NFORCE2,
Tejun Heo27e4b272006-06-17 15:49:55 +0900352 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
Robert Hancockfbbb2622006-10-27 19:08:41 -0700353 CK804,
Kuan Luof140f0f2007-10-15 15:16:53 -0400354 ADMA,
Tejun Heo2d775702009-01-25 11:29:38 +0900355 MCP5x,
Kuan Luof140f0f2007-10-15 15:16:53 -0400356 SWNCQ,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357};
358
Jeff Garzik3b7d6972005-11-10 11:04:11 -0500359static const struct pci_device_id nv_pci_tbl[] = {
Jeff Garzik54bb3a92006-09-27 22:20:11 -0400360 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
361 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
362 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
363 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
364 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
365 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
366 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
Tejun Heo2d775702009-01-25 11:29:38 +0900367 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), MCP5x },
368 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), MCP5x },
369 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), MCP5x },
370 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), MCP5x },
Kuan Luoe2e031e2007-10-25 02:14:17 -0400371 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
372 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
373 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400374
375 { } /* terminate list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376};
377
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378static struct pci_driver nv_pci_driver = {
379 .name = DRV_NAME,
380 .id_table = nv_pci_tbl,
381 .probe = nv_init_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900382#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600383 .suspend = ata_pci_device_suspend,
384 .resume = nv_pci_device_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900385#endif
Tejun Heo1daf9ce2007-05-17 13:13:57 +0200386 .remove = ata_pci_remove_one,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387};
388
Jeff Garzik193515d2005-11-07 00:59:37 -0500389static struct scsi_host_template nv_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900390 ATA_BMDMA_SHT(DRV_NAME),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391};
392
Robert Hancockfbbb2622006-10-27 19:08:41 -0700393static struct scsi_host_template nv_adma_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900394 ATA_NCQ_SHT(DRV_NAME),
Robert Hancockfbbb2622006-10-27 19:08:41 -0700395 .can_queue = NV_ADMA_MAX_CPBS,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700396 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700397 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
398 .slave_configure = nv_adma_slave_config,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700399};
400
Kuan Luof140f0f2007-10-15 15:16:53 -0400401static struct scsi_host_template nv_swncq_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900402 ATA_NCQ_SHT(DRV_NAME),
Kuan Luof140f0f2007-10-15 15:16:53 -0400403 .can_queue = ATA_MAX_QUEUE,
Kuan Luof140f0f2007-10-15 15:16:53 -0400404 .sg_tablesize = LIBATA_MAX_PRD,
Kuan Luof140f0f2007-10-15 15:16:53 -0400405 .dma_boundary = ATA_DMA_BOUNDARY,
406 .slave_configure = nv_swncq_slave_config,
Kuan Luof140f0f2007-10-15 15:16:53 -0400407};
408
Tejun Heo7f4774b2009-06-10 16:29:07 +0900409/*
410 * NV SATA controllers have various different problems with hardreset
411 * protocol depending on the specific controller and device.
412 *
413 * GENERIC:
414 *
415 * bko11195 reports that link doesn't come online after hardreset on
416 * generic nv's and there have been several other similar reports on
417 * linux-ide.
418 *
419 * bko12351#c23 reports that warmplug on MCP61 doesn't work with
420 * softreset.
421 *
422 * NF2/3:
423 *
424 * bko3352 reports nf2/3 controllers can't determine device signature
425 * reliably after hardreset. The following thread reports detection
426 * failure on cold boot with the standard debouncing timing.
427 *
428 * http://thread.gmane.org/gmane.linux.ide/34098
429 *
430 * bko12176 reports that hardreset fails to bring up the link during
431 * boot on nf2.
432 *
433 * CK804:
434 *
435 * For initial probing after boot and hot plugging, hardreset mostly
436 * works fine on CK804 but curiously, reprobing on the initial port
437 * by rescanning or rmmod/insmod fails to acquire the initial D2H Reg
438 * FIS in somewhat undeterministic way.
439 *
440 * SWNCQ:
441 *
442 * bko12351 reports that when SWNCQ is enabled, for hotplug to work,
443 * hardreset should be used and hardreset can't report proper
444 * signature, which suggests that mcp5x is closer to nf2 as long as
445 * reset quirkiness is concerned.
446 *
447 * bko12703 reports that boot probing fails for intel SSD with
448 * hardreset. Link fails to come online. Softreset works fine.
449 *
450 * The failures are varied but the following patterns seem true for
451 * all flavors.
452 *
453 * - Softreset during boot always works.
454 *
455 * - Hardreset during boot sometimes fails to bring up the link on
456 * certain comibnations and device signature acquisition is
457 * unreliable.
458 *
459 * - Hardreset is often necessary after hotplug.
460 *
461 * So, preferring softreset for boot probing and error handling (as
462 * hardreset might bring down the link) but using hardreset for
463 * post-boot probing should work around the above issues in most
464 * cases. Define nv_hardreset() which only kicks in for post-boot
465 * probing and use it for all variants.
466 */
467static struct ata_port_operations nv_generic_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900468 .inherits = &ata_bmdma_port_ops,
Alan Coxc96f1732009-03-24 10:23:46 +0000469 .lost_interrupt = ATA_OP_NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 .scr_read = nv_scr_read,
471 .scr_write = nv_scr_write,
Tejun Heo7f4774b2009-06-10 16:29:07 +0900472 .hardreset = nv_hardreset,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473};
474
Tejun Heo029cfd62008-03-25 12:22:49 +0900475static struct ata_port_operations nv_nf2_ops = {
Tejun Heo7dac7452009-02-12 10:34:32 +0900476 .inherits = &nv_generic_ops,
Tejun Heo39f87582006-06-17 15:49:56 +0900477 .freeze = nv_nf2_freeze,
478 .thaw = nv_nf2_thaw,
Tejun Heoada364e2006-06-17 15:49:56 +0900479};
480
Tejun Heo029cfd62008-03-25 12:22:49 +0900481static struct ata_port_operations nv_ck804_ops = {
Tejun Heo7f4774b2009-06-10 16:29:07 +0900482 .inherits = &nv_generic_ops,
Tejun Heo39f87582006-06-17 15:49:56 +0900483 .freeze = nv_ck804_freeze,
484 .thaw = nv_ck804_thaw,
Tejun Heoada364e2006-06-17 15:49:56 +0900485 .host_stop = nv_ck804_host_stop,
486};
487
Tejun Heo029cfd62008-03-25 12:22:49 +0900488static struct ata_port_operations nv_adma_ops = {
Tejun Heo3c324282008-11-03 12:37:49 +0900489 .inherits = &nv_ck804_ops,
Tejun Heo029cfd62008-03-25 12:22:49 +0900490
Robert Hancock2dec7552006-11-26 14:20:19 -0600491 .check_atapi_dma = nv_adma_check_atapi_dma,
Tejun Heo5682ed32008-04-07 22:47:16 +0900492 .sff_tf_read = nv_adma_tf_read,
Tejun Heo31cc23b2007-09-23 13:14:12 +0900493 .qc_defer = ata_std_qc_defer,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700494 .qc_prep = nv_adma_qc_prep,
495 .qc_issue = nv_adma_qc_issue,
Tejun Heo5682ed32008-04-07 22:47:16 +0900496 .sff_irq_clear = nv_adma_irq_clear,
Tejun Heo029cfd62008-03-25 12:22:49 +0900497
Robert Hancock53014e22007-05-05 15:36:36 -0600498 .freeze = nv_adma_freeze,
499 .thaw = nv_adma_thaw,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700500 .error_handler = nv_adma_error_handler,
Robert Hancockf5ecac22007-02-20 21:49:10 -0600501 .post_internal_cmd = nv_adma_post_internal_cmd,
Tejun Heo029cfd62008-03-25 12:22:49 +0900502
Robert Hancockfbbb2622006-10-27 19:08:41 -0700503 .port_start = nv_adma_port_start,
504 .port_stop = nv_adma_port_stop,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900505#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600506 .port_suspend = nv_adma_port_suspend,
507 .port_resume = nv_adma_port_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900508#endif
Robert Hancockfbbb2622006-10-27 19:08:41 -0700509 .host_stop = nv_adma_host_stop,
510};
511
Tejun Heo029cfd62008-03-25 12:22:49 +0900512static struct ata_port_operations nv_swncq_ops = {
Tejun Heo7f4774b2009-06-10 16:29:07 +0900513 .inherits = &nv_generic_ops,
Tejun Heo029cfd62008-03-25 12:22:49 +0900514
Kuan Luof140f0f2007-10-15 15:16:53 -0400515 .qc_defer = ata_std_qc_defer,
516 .qc_prep = nv_swncq_qc_prep,
517 .qc_issue = nv_swncq_qc_issue,
Tejun Heo029cfd62008-03-25 12:22:49 +0900518
Kuan Luof140f0f2007-10-15 15:16:53 -0400519 .freeze = nv_mcp55_freeze,
520 .thaw = nv_mcp55_thaw,
521 .error_handler = nv_swncq_error_handler,
Tejun Heo029cfd62008-03-25 12:22:49 +0900522
Kuan Luof140f0f2007-10-15 15:16:53 -0400523#ifdef CONFIG_PM
524 .port_suspend = nv_swncq_port_suspend,
525 .port_resume = nv_swncq_port_resume,
526#endif
527 .port_start = nv_swncq_port_start,
528};
529
Tejun Heo95947192008-03-25 12:22:49 +0900530struct nv_pi_priv {
531 irq_handler_t irq_handler;
532 struct scsi_host_template *sht;
533};
534
535#define NV_PI_PRIV(_irq_handler, _sht) \
536 &(struct nv_pi_priv){ .irq_handler = _irq_handler, .sht = _sht }
537
Tejun Heo1626aeb2007-05-04 12:43:58 +0200538static const struct ata_port_info nv_port_info[] = {
Tejun Heoada364e2006-06-17 15:49:56 +0900539 /* generic */
540 {
Tejun Heo0c887582007-08-06 18:36:23 +0900541 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
Tejun Heoada364e2006-06-17 15:49:56 +0900542 .pio_mask = NV_PIO_MASK,
543 .mwdma_mask = NV_MWDMA_MASK,
544 .udma_mask = NV_UDMA_MASK,
545 .port_ops = &nv_generic_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900546 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
Tejun Heoada364e2006-06-17 15:49:56 +0900547 },
548 /* nforce2/3 */
549 {
Tejun Heo0c887582007-08-06 18:36:23 +0900550 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
Tejun Heoada364e2006-06-17 15:49:56 +0900551 .pio_mask = NV_PIO_MASK,
552 .mwdma_mask = NV_MWDMA_MASK,
553 .udma_mask = NV_UDMA_MASK,
554 .port_ops = &nv_nf2_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900555 .private_data = NV_PI_PRIV(nv_nf2_interrupt, &nv_sht),
Tejun Heoada364e2006-06-17 15:49:56 +0900556 },
557 /* ck804 */
558 {
Tejun Heo0c887582007-08-06 18:36:23 +0900559 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
Tejun Heoada364e2006-06-17 15:49:56 +0900560 .pio_mask = NV_PIO_MASK,
561 .mwdma_mask = NV_MWDMA_MASK,
562 .udma_mask = NV_UDMA_MASK,
563 .port_ops = &nv_ck804_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900564 .private_data = NV_PI_PRIV(nv_ck804_interrupt, &nv_sht),
Tejun Heoada364e2006-06-17 15:49:56 +0900565 },
Robert Hancockfbbb2622006-10-27 19:08:41 -0700566 /* ADMA */
567 {
Robert Hancockfbbb2622006-10-27 19:08:41 -0700568 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
569 ATA_FLAG_MMIO | ATA_FLAG_NCQ,
570 .pio_mask = NV_PIO_MASK,
571 .mwdma_mask = NV_MWDMA_MASK,
572 .udma_mask = NV_UDMA_MASK,
573 .port_ops = &nv_adma_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900574 .private_data = NV_PI_PRIV(nv_adma_interrupt, &nv_adma_sht),
Robert Hancockfbbb2622006-10-27 19:08:41 -0700575 },
Tejun Heo2d775702009-01-25 11:29:38 +0900576 /* MCP5x */
577 {
578 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
579 .pio_mask = NV_PIO_MASK,
580 .mwdma_mask = NV_MWDMA_MASK,
581 .udma_mask = NV_UDMA_MASK,
Tejun Heo7f4774b2009-06-10 16:29:07 +0900582 .port_ops = &nv_generic_ops,
Tejun Heo2d775702009-01-25 11:29:38 +0900583 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
584 },
Kuan Luof140f0f2007-10-15 15:16:53 -0400585 /* SWNCQ */
586 {
Kuan Luof140f0f2007-10-15 15:16:53 -0400587 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
588 ATA_FLAG_NCQ,
Kuan Luof140f0f2007-10-15 15:16:53 -0400589 .pio_mask = NV_PIO_MASK,
590 .mwdma_mask = NV_MWDMA_MASK,
591 .udma_mask = NV_UDMA_MASK,
592 .port_ops = &nv_swncq_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900593 .private_data = NV_PI_PRIV(nv_swncq_interrupt, &nv_swncq_sht),
Kuan Luof140f0f2007-10-15 15:16:53 -0400594 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595};
596
597MODULE_AUTHOR("NVIDIA");
598MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
599MODULE_LICENSE("GPL");
600MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
601MODULE_VERSION(DRV_VERSION);
602
Jeff Garzik06993d22008-04-04 03:34:45 -0400603static int adma_enabled;
Zoltan Boszormenyid21279f2008-03-28 14:33:46 -0700604static int swncq_enabled = 1;
Tony Vroon51c89492009-08-06 00:50:09 +0100605static int msi_enabled;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700606
Robert Hancock2dec7552006-11-26 14:20:19 -0600607static void nv_adma_register_mode(struct ata_port *ap)
608{
Robert Hancock2dec7552006-11-26 14:20:19 -0600609 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600610 void __iomem *mmio = pp->ctl_block;
Robert Hancocka2cfe812007-02-05 16:26:03 -0800611 u16 tmp, status;
612 int count = 0;
Robert Hancock2dec7552006-11-26 14:20:19 -0600613
614 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
615 return;
616
Robert Hancocka2cfe812007-02-05 16:26:03 -0800617 status = readw(mmio + NV_ADMA_STAT);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400618 while (!(status & NV_ADMA_STAT_IDLE) && count < 20) {
Robert Hancocka2cfe812007-02-05 16:26:03 -0800619 ndelay(50);
620 status = readw(mmio + NV_ADMA_STAT);
621 count++;
622 }
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400623 if (count == 20)
Robert Hancocka2cfe812007-02-05 16:26:03 -0800624 ata_port_printk(ap, KERN_WARNING,
625 "timeout waiting for ADMA IDLE, stat=0x%hx\n",
626 status);
627
Robert Hancock2dec7552006-11-26 14:20:19 -0600628 tmp = readw(mmio + NV_ADMA_CTL);
629 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
630
Robert Hancocka2cfe812007-02-05 16:26:03 -0800631 count = 0;
632 status = readw(mmio + NV_ADMA_STAT);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400633 while (!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
Robert Hancocka2cfe812007-02-05 16:26:03 -0800634 ndelay(50);
635 status = readw(mmio + NV_ADMA_STAT);
636 count++;
637 }
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400638 if (count == 20)
Robert Hancocka2cfe812007-02-05 16:26:03 -0800639 ata_port_printk(ap, KERN_WARNING,
640 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
641 status);
642
Robert Hancock2dec7552006-11-26 14:20:19 -0600643 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
644}
645
646static void nv_adma_mode(struct ata_port *ap)
647{
Robert Hancock2dec7552006-11-26 14:20:19 -0600648 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600649 void __iomem *mmio = pp->ctl_block;
Robert Hancocka2cfe812007-02-05 16:26:03 -0800650 u16 tmp, status;
651 int count = 0;
Robert Hancock2dec7552006-11-26 14:20:19 -0600652
653 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
654 return;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500655
Robert Hancock2dec7552006-11-26 14:20:19 -0600656 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
657
658 tmp = readw(mmio + NV_ADMA_CTL);
659 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
660
Robert Hancocka2cfe812007-02-05 16:26:03 -0800661 status = readw(mmio + NV_ADMA_STAT);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400662 while (((status & NV_ADMA_STAT_LEGACY) ||
Robert Hancocka2cfe812007-02-05 16:26:03 -0800663 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
664 ndelay(50);
665 status = readw(mmio + NV_ADMA_STAT);
666 count++;
667 }
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400668 if (count == 20)
Robert Hancocka2cfe812007-02-05 16:26:03 -0800669 ata_port_printk(ap, KERN_WARNING,
670 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
671 status);
672
Robert Hancock2dec7552006-11-26 14:20:19 -0600673 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
674}
675
Robert Hancockfbbb2622006-10-27 19:08:41 -0700676static int nv_adma_slave_config(struct scsi_device *sdev)
677{
678 struct ata_port *ap = ata_shost_to_port(sdev->host);
Robert Hancock2dec7552006-11-26 14:20:19 -0600679 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancock8959d302008-02-04 19:39:02 -0600680 struct nv_adma_port_priv *port0, *port1;
681 struct scsi_device *sdev0, *sdev1;
Robert Hancock2dec7552006-11-26 14:20:19 -0600682 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
Robert Hancock8959d302008-02-04 19:39:02 -0600683 unsigned long segment_boundary, flags;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700684 unsigned short sg_tablesize;
685 int rc;
Robert Hancock2dec7552006-11-26 14:20:19 -0600686 int adma_enable;
687 u32 current_reg, new_reg, config_mask;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700688
689 rc = ata_scsi_slave_config(sdev);
690
691 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
692 /* Not a proper libata device, ignore */
693 return rc;
694
Robert Hancock8959d302008-02-04 19:39:02 -0600695 spin_lock_irqsave(ap->lock, flags);
696
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900697 if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) {
Robert Hancockfbbb2622006-10-27 19:08:41 -0700698 /*
699 * NVIDIA reports that ADMA mode does not support ATAPI commands.
700 * Therefore ATAPI commands are sent through the legacy interface.
701 * However, the legacy interface only supports 32-bit DMA.
702 * Restrict DMA parameters as required by the legacy interface
703 * when an ATAPI device is connected.
704 */
Robert Hancockfbbb2622006-10-27 19:08:41 -0700705 segment_boundary = ATA_DMA_BOUNDARY;
706 /* Subtract 1 since an extra entry may be needed for padding, see
707 libata-scsi.c */
708 sg_tablesize = LIBATA_MAX_PRD - 1;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500709
Robert Hancock2dec7552006-11-26 14:20:19 -0600710 /* Since the legacy DMA engine is in use, we need to disable ADMA
711 on the port. */
712 adma_enable = 0;
713 nv_adma_register_mode(ap);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400714 } else {
Robert Hancockfbbb2622006-10-27 19:08:41 -0700715 segment_boundary = NV_ADMA_DMA_BOUNDARY;
716 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
Robert Hancock2dec7552006-11-26 14:20:19 -0600717 adma_enable = 1;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700718 }
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500719
Robert Hancock2dec7552006-11-26 14:20:19 -0600720 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &current_reg);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700721
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400722 if (ap->port_no == 1)
Robert Hancock2dec7552006-11-26 14:20:19 -0600723 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
724 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
725 else
726 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
727 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500728
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400729 if (adma_enable) {
Robert Hancock2dec7552006-11-26 14:20:19 -0600730 new_reg = current_reg | config_mask;
731 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400732 } else {
Robert Hancock2dec7552006-11-26 14:20:19 -0600733 new_reg = current_reg & ~config_mask;
734 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
735 }
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500736
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400737 if (current_reg != new_reg)
Robert Hancock2dec7552006-11-26 14:20:19 -0600738 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500739
Robert Hancock8959d302008-02-04 19:39:02 -0600740 port0 = ap->host->ports[0]->private_data;
741 port1 = ap->host->ports[1]->private_data;
742 sdev0 = ap->host->ports[0]->link.device[0].sdev;
743 sdev1 = ap->host->ports[1]->link.device[0].sdev;
744 if ((port0->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
745 (port1->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)) {
746 /** We have to set the DMA mask to 32-bit if either port is in
747 ATAPI mode, since they are on the same PCI device which is
748 used for DMA mapping. If we set the mask we also need to set
749 the bounce limit on both ports to ensure that the block
750 layer doesn't feed addresses that cause DMA mapping to
751 choke. If either SCSI device is not allocated yet, it's OK
752 since that port will discover its correct setting when it
753 does get allocated.
754 Note: Setting 32-bit mask should not fail. */
755 if (sdev0)
756 blk_queue_bounce_limit(sdev0->request_queue,
757 ATA_DMA_MASK);
758 if (sdev1)
759 blk_queue_bounce_limit(sdev1->request_queue,
760 ATA_DMA_MASK);
761
762 pci_set_dma_mask(pdev, ATA_DMA_MASK);
763 } else {
764 /** This shouldn't fail as it was set to this value before */
765 pci_set_dma_mask(pdev, pp->adma_dma_mask);
766 if (sdev0)
767 blk_queue_bounce_limit(sdev0->request_queue,
768 pp->adma_dma_mask);
769 if (sdev1)
770 blk_queue_bounce_limit(sdev1->request_queue,
771 pp->adma_dma_mask);
772 }
773
Robert Hancockfbbb2622006-10-27 19:08:41 -0700774 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
Martin K. Petersen8a783622010-02-26 00:20:39 -0500775 blk_queue_max_segments(sdev->request_queue, sg_tablesize);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700776 ata_port_printk(ap, KERN_INFO,
Robert Hancock8959d302008-02-04 19:39:02 -0600777 "DMA mask 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
778 (unsigned long long)*ap->host->dev->dma_mask,
779 segment_boundary, sg_tablesize);
780
781 spin_unlock_irqrestore(ap->lock, flags);
782
Robert Hancockfbbb2622006-10-27 19:08:41 -0700783 return rc;
784}
785
Robert Hancock2dec7552006-11-26 14:20:19 -0600786static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
787{
788 struct nv_adma_port_priv *pp = qc->ap->private_data;
789 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
790}
791
Robert Hancockf2fb3442007-03-26 21:43:36 -0800792static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
793{
Robert Hancock3f3debd2007-11-25 16:59:36 -0600794 /* Other than when internal or pass-through commands are executed,
795 the only time this function will be called in ADMA mode will be
796 if a command fails. In the failure case we don't care about going
797 into register mode with ADMA commands pending, as the commands will
798 all shortly be aborted anyway. We assume that NCQ commands are not
799 issued via passthrough, which is the only way that switching into
800 ADMA mode could abort outstanding commands. */
Robert Hancockf2fb3442007-03-26 21:43:36 -0800801 nv_adma_register_mode(ap);
802
Tejun Heo9363c382008-04-07 22:47:16 +0900803 ata_sff_tf_read(ap, tf);
Robert Hancockf2fb3442007-03-26 21:43:36 -0800804}
805
Robert Hancock2dec7552006-11-26 14:20:19 -0600806static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
Robert Hancockfbbb2622006-10-27 19:08:41 -0700807{
808 unsigned int idx = 0;
809
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400810 if (tf->flags & ATA_TFLAG_ISADDR) {
Robert Hancockac3d6b82007-02-19 19:02:46 -0600811 if (tf->flags & ATA_TFLAG_LBA48) {
812 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
813 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
814 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
815 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
816 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
817 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
818 } else
819 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
Jeff Garzika84471f2007-02-26 05:51:33 -0500820
Robert Hancockac3d6b82007-02-19 19:02:46 -0600821 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
822 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
823 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
824 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700825 }
Jeff Garzika84471f2007-02-26 05:51:33 -0500826
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400827 if (tf->flags & ATA_TFLAG_DEVICE)
Robert Hancockac3d6b82007-02-19 19:02:46 -0600828 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700829
830 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
Jeff Garzika84471f2007-02-26 05:51:33 -0500831
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400832 while (idx < 12)
Robert Hancockac3d6b82007-02-19 19:02:46 -0600833 cpb[idx++] = cpu_to_le16(IGN);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700834
835 return idx;
836}
837
Robert Hancock5bd28a42007-02-05 16:26:01 -0800838static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
Robert Hancockfbbb2622006-10-27 19:08:41 -0700839{
840 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancock2dec7552006-11-26 14:20:19 -0600841 u8 flags = pp->cpb[cpb_num].resp_flags;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700842
843 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
844
Robert Hancock5bd28a42007-02-05 16:26:01 -0800845 if (unlikely((force_err ||
846 flags & (NV_CPB_RESP_ATA_ERR |
847 NV_CPB_RESP_CMD_ERR |
848 NV_CPB_RESP_CPB_ERR)))) {
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900849 struct ata_eh_info *ehi = &ap->link.eh_info;
Robert Hancock5bd28a42007-02-05 16:26:01 -0800850 int freeze = 0;
851
852 ata_ehi_clear_desc(ehi);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400853 __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags);
Robert Hancock5bd28a42007-02-05 16:26:01 -0800854 if (flags & NV_CPB_RESP_ATA_ERR) {
Tejun Heob64bbc32007-07-16 14:29:39 +0900855 ata_ehi_push_desc(ehi, "ATA error");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800856 ehi->err_mask |= AC_ERR_DEV;
857 } else if (flags & NV_CPB_RESP_CMD_ERR) {
Tejun Heob64bbc32007-07-16 14:29:39 +0900858 ata_ehi_push_desc(ehi, "CMD error");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800859 ehi->err_mask |= AC_ERR_DEV;
860 } else if (flags & NV_CPB_RESP_CPB_ERR) {
Tejun Heob64bbc32007-07-16 14:29:39 +0900861 ata_ehi_push_desc(ehi, "CPB error");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800862 ehi->err_mask |= AC_ERR_SYSTEM;
863 freeze = 1;
864 } else {
865 /* notifier error, but no error in CPB flags? */
Tejun Heob64bbc32007-07-16 14:29:39 +0900866 ata_ehi_push_desc(ehi, "unknown");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800867 ehi->err_mask |= AC_ERR_OTHER;
868 freeze = 1;
869 }
870 /* Kill all commands. EH will determine what actually failed. */
871 if (freeze)
872 ata_port_freeze(ap);
873 else
874 ata_port_abort(ap);
875 return 1;
876 }
877
Robert Hancockf2fb3442007-03-26 21:43:36 -0800878 if (likely(flags & NV_CPB_RESP_DONE)) {
Robert Hancockfbbb2622006-10-27 19:08:41 -0700879 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num);
Robert Hancock5bd28a42007-02-05 16:26:01 -0800880 VPRINTK("CPB flags done, flags=0x%x\n", flags);
881 if (likely(qc)) {
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400882 DPRINTK("Completing qc from tag %d\n", cpb_num);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700883 ata_qc_complete(qc);
Robert Hancock2a54cf72007-02-21 23:53:03 -0600884 } else {
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900885 struct ata_eh_info *ehi = &ap->link.eh_info;
Robert Hancock2a54cf72007-02-21 23:53:03 -0600886 /* Notifier bits set without a command may indicate the drive
887 is misbehaving. Raise host state machine violation on this
888 condition. */
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400889 ata_port_printk(ap, KERN_ERR,
890 "notifier for tag %d with no cmd?\n",
891 cpb_num);
Robert Hancock2a54cf72007-02-21 23:53:03 -0600892 ehi->err_mask |= AC_ERR_HSM;
Tejun Heocf480622008-01-24 00:05:14 +0900893 ehi->action |= ATA_EH_RESET;
Robert Hancock2a54cf72007-02-21 23:53:03 -0600894 ata_port_freeze(ap);
895 return 1;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700896 }
897 }
Robert Hancock5bd28a42007-02-05 16:26:01 -0800898 return 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700899}
900
Robert Hancock2dec7552006-11-26 14:20:19 -0600901static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
902{
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900903 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
Robert Hancock2dec7552006-11-26 14:20:19 -0600904
905 /* freeze if hotplugged */
906 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
907 ata_port_freeze(ap);
908 return 1;
909 }
910
911 /* bail out if not our interrupt */
912 if (!(irq_stat & NV_INT_DEV))
913 return 0;
914
915 /* DEV interrupt w/ no active qc? */
916 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
Tejun Heo9363c382008-04-07 22:47:16 +0900917 ata_sff_check_status(ap);
Robert Hancock2dec7552006-11-26 14:20:19 -0600918 return 1;
919 }
920
921 /* handle interrupt */
Tejun Heo9363c382008-04-07 22:47:16 +0900922 return ata_sff_host_intr(ap, qc);
Robert Hancock2dec7552006-11-26 14:20:19 -0600923}
924
Robert Hancockfbbb2622006-10-27 19:08:41 -0700925static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
926{
927 struct ata_host *host = dev_instance;
928 int i, handled = 0;
Robert Hancock2dec7552006-11-26 14:20:19 -0600929 u32 notifier_clears[2];
Robert Hancockfbbb2622006-10-27 19:08:41 -0700930
931 spin_lock(&host->lock);
932
933 for (i = 0; i < host->n_ports; i++) {
934 struct ata_port *ap = host->ports[i];
Robert Hancock2dec7552006-11-26 14:20:19 -0600935 notifier_clears[i] = 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700936
937 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
938 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600939 void __iomem *mmio = pp->ctl_block;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700940 u16 status;
941 u32 gen_ctl;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700942 u32 notifier, notifier_error;
Jeff Garzika617c092007-05-21 20:14:23 -0400943
Robert Hancock53014e22007-05-05 15:36:36 -0600944 /* if ADMA is disabled, use standard ata interrupt handler */
945 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
946 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
947 >> (NV_INT_PORT_SHIFT * i);
948 handled += nv_host_intr(ap, irq_stat);
949 continue;
950 }
Robert Hancockfbbb2622006-10-27 19:08:41 -0700951
Robert Hancock53014e22007-05-05 15:36:36 -0600952 /* if in ATA register mode, check for standard interrupts */
Robert Hancockfbbb2622006-10-27 19:08:41 -0700953 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
Tejun Heo0d5ff562007-02-01 15:06:36 +0900954 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
Robert Hancock2dec7552006-11-26 14:20:19 -0600955 >> (NV_INT_PORT_SHIFT * i);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400956 if (ata_tag_valid(ap->link.active_tag))
Robert Hancockf740d162007-01-23 20:09:02 -0600957 /** NV_INT_DEV indication seems unreliable at times
958 at least in ADMA mode. Force it on always when a
959 command is active, to prevent losing interrupts. */
960 irq_stat |= NV_INT_DEV;
Robert Hancock2dec7552006-11-26 14:20:19 -0600961 handled += nv_host_intr(ap, irq_stat);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700962 }
963
964 notifier = readl(mmio + NV_ADMA_NOTIFIER);
965 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
Robert Hancock2dec7552006-11-26 14:20:19 -0600966 notifier_clears[i] = notifier | notifier_error;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700967
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600968 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700969
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400970 if (!NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
Robert Hancockfbbb2622006-10-27 19:08:41 -0700971 !notifier_error)
972 /* Nothing to do */
973 continue;
974
975 status = readw(mmio + NV_ADMA_STAT);
976
977 /* Clear status. Ensure the controller sees the clearing before we start
978 looking at any of the CPB statuses, so that any CPB completions after
979 this point in the handler will raise another interrupt. */
980 writew(status, mmio + NV_ADMA_STAT);
981 readw(mmio + NV_ADMA_STAT); /* flush posted write */
982 rmb();
983
Robert Hancock5bd28a42007-02-05 16:26:01 -0800984 handled++; /* irq handled if we got here */
985
986 /* freeze if hotplugged or controller error */
987 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
988 NV_ADMA_STAT_HOTUNPLUG |
Robert Hancock5278b502007-02-11 18:36:56 -0600989 NV_ADMA_STAT_TIMEOUT |
990 NV_ADMA_STAT_SERROR))) {
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900991 struct ata_eh_info *ehi = &ap->link.eh_info;
Robert Hancock5bd28a42007-02-05 16:26:01 -0800992
993 ata_ehi_clear_desc(ehi);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400994 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status);
Robert Hancock5bd28a42007-02-05 16:26:01 -0800995 if (status & NV_ADMA_STAT_TIMEOUT) {
996 ehi->err_mask |= AC_ERR_SYSTEM;
Tejun Heob64bbc32007-07-16 14:29:39 +0900997 ata_ehi_push_desc(ehi, "timeout");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800998 } else if (status & NV_ADMA_STAT_HOTPLUG) {
999 ata_ehi_hotplugged(ehi);
Tejun Heob64bbc32007-07-16 14:29:39 +09001000 ata_ehi_push_desc(ehi, "hotplug");
Robert Hancock5bd28a42007-02-05 16:26:01 -08001001 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
1002 ata_ehi_hotplugged(ehi);
Tejun Heob64bbc32007-07-16 14:29:39 +09001003 ata_ehi_push_desc(ehi, "hot unplug");
Robert Hancock5278b502007-02-11 18:36:56 -06001004 } else if (status & NV_ADMA_STAT_SERROR) {
1005 /* let libata analyze SError and figure out the cause */
Tejun Heob64bbc32007-07-16 14:29:39 +09001006 ata_ehi_push_desc(ehi, "SError");
1007 } else
1008 ata_ehi_push_desc(ehi, "unknown");
Robert Hancockfbbb2622006-10-27 19:08:41 -07001009 ata_port_freeze(ap);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001010 continue;
1011 }
1012
Robert Hancock5bd28a42007-02-05 16:26:01 -08001013 if (status & (NV_ADMA_STAT_DONE |
Robert Hancocka1fe7822008-01-29 19:53:19 -06001014 NV_ADMA_STAT_CPBERR |
1015 NV_ADMA_STAT_CMD_COMPLETE)) {
1016 u32 check_commands = notifier_clears[i];
Robert Hancock721449b2007-02-19 19:03:08 -06001017 int pos, error = 0;
Robert Hancock8ba5e4c2007-03-08 18:02:18 -06001018
Robert Hancocka1fe7822008-01-29 19:53:19 -06001019 if (status & NV_ADMA_STAT_CPBERR) {
1020 /* Check all active commands */
1021 if (ata_tag_valid(ap->link.active_tag))
1022 check_commands = 1 <<
1023 ap->link.active_tag;
1024 else
1025 check_commands = ap->
1026 link.sactive;
1027 }
Robert Hancock8ba5e4c2007-03-08 18:02:18 -06001028
Robert Hancockfbbb2622006-10-27 19:08:41 -07001029 /** Check CPBs for completed commands */
Robert Hancock721449b2007-02-19 19:03:08 -06001030 while ((pos = ffs(check_commands)) && !error) {
1031 pos--;
1032 error = nv_adma_check_cpb(ap, pos,
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001033 notifier_error & (1 << pos));
1034 check_commands &= ~(1 << pos);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001035 }
1036 }
Robert Hancockfbbb2622006-10-27 19:08:41 -07001037 }
1038 }
Jeff Garzikf20b16f2006-12-11 11:14:06 -05001039
Jeff Garzikb4479162007-10-25 20:47:30 -04001040 if (notifier_clears[0] || notifier_clears[1]) {
Robert Hancock2dec7552006-11-26 14:20:19 -06001041 /* Note: Both notifier clear registers must be written
1042 if either is set, even if one is zero, according to NVIDIA. */
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001043 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
1044 writel(notifier_clears[0], pp->notifier_clear_block);
1045 pp = host->ports[1]->private_data;
1046 writel(notifier_clears[1], pp->notifier_clear_block);
Robert Hancock2dec7552006-11-26 14:20:19 -06001047 }
Robert Hancockfbbb2622006-10-27 19:08:41 -07001048
1049 spin_unlock(&host->lock);
1050
1051 return IRQ_RETVAL(handled);
1052}
1053
Robert Hancock53014e22007-05-05 15:36:36 -06001054static void nv_adma_freeze(struct ata_port *ap)
1055{
1056 struct nv_adma_port_priv *pp = ap->private_data;
1057 void __iomem *mmio = pp->ctl_block;
1058 u16 tmp;
1059
1060 nv_ck804_freeze(ap);
1061
1062 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1063 return;
1064
1065 /* clear any outstanding CK804 notifications */
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001066 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
Robert Hancock53014e22007-05-05 15:36:36 -06001067 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1068
1069 /* Disable interrupt */
1070 tmp = readw(mmio + NV_ADMA_CTL);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001071 writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
Robert Hancock53014e22007-05-05 15:36:36 -06001072 mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001073 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancock53014e22007-05-05 15:36:36 -06001074}
1075
1076static void nv_adma_thaw(struct ata_port *ap)
1077{
1078 struct nv_adma_port_priv *pp = ap->private_data;
1079 void __iomem *mmio = pp->ctl_block;
1080 u16 tmp;
1081
1082 nv_ck804_thaw(ap);
1083
1084 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1085 return;
1086
1087 /* Enable interrupt */
1088 tmp = readw(mmio + NV_ADMA_CTL);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001089 writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
Robert Hancock53014e22007-05-05 15:36:36 -06001090 mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001091 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancock53014e22007-05-05 15:36:36 -06001092}
1093
Robert Hancockfbbb2622006-10-27 19:08:41 -07001094static void nv_adma_irq_clear(struct ata_port *ap)
1095{
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001096 struct nv_adma_port_priv *pp = ap->private_data;
1097 void __iomem *mmio = pp->ctl_block;
Robert Hancock53014e22007-05-05 15:36:36 -06001098 u32 notifier_clears[2];
1099
1100 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
Tejun Heo9363c382008-04-07 22:47:16 +09001101 ata_sff_irq_clear(ap);
Robert Hancock53014e22007-05-05 15:36:36 -06001102 return;
1103 }
1104
1105 /* clear any outstanding CK804 notifications */
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001106 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
Robert Hancock53014e22007-05-05 15:36:36 -06001107 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001108
1109 /* clear ADMA status */
Robert Hancock53014e22007-05-05 15:36:36 -06001110 writew(0xffff, mmio + NV_ADMA_STAT);
Jeff Garzika617c092007-05-21 20:14:23 -04001111
Robert Hancock53014e22007-05-05 15:36:36 -06001112 /* clear notifiers - note both ports need to be written with
1113 something even though we are only clearing on one */
1114 if (ap->port_no == 0) {
1115 notifier_clears[0] = 0xFFFFFFFF;
1116 notifier_clears[1] = 0;
1117 } else {
1118 notifier_clears[0] = 0;
1119 notifier_clears[1] = 0xFFFFFFFF;
1120 }
1121 pp = ap->host->ports[0]->private_data;
1122 writel(notifier_clears[0], pp->notifier_clear_block);
1123 pp = ap->host->ports[1]->private_data;
1124 writel(notifier_clears[1], pp->notifier_clear_block);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001125}
1126
Robert Hancockf5ecac22007-02-20 21:49:10 -06001127static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001128{
Robert Hancockf5ecac22007-02-20 21:49:10 -06001129 struct nv_adma_port_priv *pp = qc->ap->private_data;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001130
Jeff Garzikb4479162007-10-25 20:47:30 -04001131 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
Tejun Heo9363c382008-04-07 22:47:16 +09001132 ata_sff_post_internal_cmd(qc);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001133}
1134
1135static int nv_adma_port_start(struct ata_port *ap)
1136{
1137 struct device *dev = ap->host->dev;
1138 struct nv_adma_port_priv *pp;
1139 int rc;
1140 void *mem;
1141 dma_addr_t mem_dma;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001142 void __iomem *mmio;
Robert Hancock8959d302008-02-04 19:39:02 -06001143 struct pci_dev *pdev = to_pci_dev(dev);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001144 u16 tmp;
1145
1146 VPRINTK("ENTER\n");
1147
Robert Hancock8959d302008-02-04 19:39:02 -06001148 /* Ensure DMA mask is set to 32-bit before allocating legacy PRD and
1149 pad buffers */
1150 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1151 if (rc)
1152 return rc;
1153 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1154 if (rc)
1155 return rc;
1156
Robert Hancockfbbb2622006-10-27 19:08:41 -07001157 rc = ata_port_start(ap);
1158 if (rc)
1159 return rc;
1160
Tejun Heo24dc5f32007-01-20 16:00:28 +09001161 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1162 if (!pp)
1163 return -ENOMEM;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001164
Tejun Heo0d5ff562007-02-01 15:06:36 +09001165 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001166 ap->port_no * NV_ADMA_PORT_SIZE;
1167 pp->ctl_block = mmio;
Tejun Heo0d5ff562007-02-01 15:06:36 +09001168 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001169 pp->notifier_clear_block = pp->gen_block +
1170 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1171
Robert Hancock8959d302008-02-04 19:39:02 -06001172 /* Now that the legacy PRD and padding buffer are allocated we can
1173 safely raise the DMA mask to allocate the CPB/APRD table.
1174 These are allowed to fail since we store the value that ends up
1175 being used to set as the bounce limit in slave_config later if
1176 needed. */
1177 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1178 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1179 pp->adma_dma_mask = *dev->dma_mask;
1180
Tejun Heo24dc5f32007-01-20 16:00:28 +09001181 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1182 &mem_dma, GFP_KERNEL);
1183 if (!mem)
1184 return -ENOMEM;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001185 memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ);
1186
1187 /*
1188 * First item in chunk of DMA memory:
1189 * 128-byte command parameter block (CPB)
1190 * one for each command tag
1191 */
1192 pp->cpb = mem;
1193 pp->cpb_dma = mem_dma;
1194
1195 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001196 writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001197
1198 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1199 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1200
1201 /*
1202 * Second item: block of ADMA_SGTBL_LEN s/g entries
1203 */
1204 pp->aprd = mem;
1205 pp->aprd_dma = mem_dma;
1206
1207 ap->private_data = pp;
1208
1209 /* clear any outstanding interrupt conditions */
1210 writew(0xffff, mmio + NV_ADMA_STAT);
1211
1212 /* initialize port variables */
1213 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1214
1215 /* clear CPB fetch count */
1216 writew(0, mmio + NV_ADMA_CPB_COUNT);
1217
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001218 /* clear GO for register mode, enable interrupt */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001219 tmp = readw(mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001220 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1221 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001222
1223 tmp = readw(mmio + NV_ADMA_CTL);
1224 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001225 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001226 udelay(1);
1227 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001228 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001229
1230 return 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001231}
1232
1233static void nv_adma_port_stop(struct ata_port *ap)
1234{
Robert Hancockfbbb2622006-10-27 19:08:41 -07001235 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001236 void __iomem *mmio = pp->ctl_block;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001237
1238 VPRINTK("ENTER\n");
Robert Hancockfbbb2622006-10-27 19:08:41 -07001239 writew(0, mmio + NV_ADMA_CTL);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001240}
1241
Tejun Heo438ac6d2007-03-02 17:31:26 +09001242#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001243static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1244{
1245 struct nv_adma_port_priv *pp = ap->private_data;
1246 void __iomem *mmio = pp->ctl_block;
1247
1248 /* Go to register mode - clears GO */
1249 nv_adma_register_mode(ap);
1250
1251 /* clear CPB fetch count */
1252 writew(0, mmio + NV_ADMA_CPB_COUNT);
1253
1254 /* disable interrupt, shut down port */
1255 writew(0, mmio + NV_ADMA_CTL);
1256
1257 return 0;
1258}
1259
1260static int nv_adma_port_resume(struct ata_port *ap)
1261{
1262 struct nv_adma_port_priv *pp = ap->private_data;
1263 void __iomem *mmio = pp->ctl_block;
1264 u16 tmp;
1265
1266 /* set CPB block location */
1267 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001268 writel((pp->cpb_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001269
1270 /* clear any outstanding interrupt conditions */
1271 writew(0xffff, mmio + NV_ADMA_STAT);
1272
1273 /* initialize port variables */
1274 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1275
1276 /* clear CPB fetch count */
1277 writew(0, mmio + NV_ADMA_CPB_COUNT);
1278
1279 /* clear GO for register mode, enable interrupt */
1280 tmp = readw(mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001281 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1282 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001283
1284 tmp = readw(mmio + NV_ADMA_CTL);
1285 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001286 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001287 udelay(1);
1288 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001289 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001290
1291 return 0;
1292}
Tejun Heo438ac6d2007-03-02 17:31:26 +09001293#endif
Robert Hancockfbbb2622006-10-27 19:08:41 -07001294
Tejun Heo9a829cc2007-04-17 23:44:08 +09001295static void nv_adma_setup_port(struct ata_port *ap)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001296{
Tejun Heo9a829cc2007-04-17 23:44:08 +09001297 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1298 struct ata_ioports *ioport = &ap->ioaddr;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001299
1300 VPRINTK("ENTER\n");
1301
Tejun Heo9a829cc2007-04-17 23:44:08 +09001302 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001303
Tejun Heo0d5ff562007-02-01 15:06:36 +09001304 ioport->cmd_addr = mmio;
1305 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001306 ioport->error_addr =
Tejun Heo0d5ff562007-02-01 15:06:36 +09001307 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1308 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1309 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1310 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1311 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1312 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001313 ioport->status_addr =
Tejun Heo0d5ff562007-02-01 15:06:36 +09001314 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001315 ioport->altstatus_addr =
Tejun Heo0d5ff562007-02-01 15:06:36 +09001316 ioport->ctl_addr = mmio + 0x20;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001317}
1318
Tejun Heo9a829cc2007-04-17 23:44:08 +09001319static int nv_adma_host_init(struct ata_host *host)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001320{
Tejun Heo9a829cc2007-04-17 23:44:08 +09001321 struct pci_dev *pdev = to_pci_dev(host->dev);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001322 unsigned int i;
1323 u32 tmp32;
1324
1325 VPRINTK("ENTER\n");
1326
1327 /* enable ADMA on the ports */
1328 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1329 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1330 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1331 NV_MCP_SATA_CFG_20_PORT1_EN |
1332 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1333
1334 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1335
Tejun Heo9a829cc2007-04-17 23:44:08 +09001336 for (i = 0; i < host->n_ports; i++)
1337 nv_adma_setup_port(host->ports[i]);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001338
Robert Hancockfbbb2622006-10-27 19:08:41 -07001339 return 0;
1340}
1341
1342static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1343 struct scatterlist *sg,
1344 int idx,
1345 struct nv_adma_prd *aprd)
1346{
Robert Hancock41949ed2007-02-19 19:02:27 -06001347 u8 flags = 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001348 if (qc->tf.flags & ATA_TFLAG_WRITE)
1349 flags |= NV_APRD_WRITE;
1350 if (idx == qc->n_elem - 1)
1351 flags |= NV_APRD_END;
1352 else if (idx != 4)
1353 flags |= NV_APRD_CONT;
1354
1355 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1356 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
Robert Hancock2dec7552006-11-26 14:20:19 -06001357 aprd->flags = flags;
Robert Hancock41949ed2007-02-19 19:02:27 -06001358 aprd->packet_len = 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001359}
1360
1361static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1362{
1363 struct nv_adma_port_priv *pp = qc->ap->private_data;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001364 struct nv_adma_prd *aprd;
1365 struct scatterlist *sg;
Tejun Heoff2aeb12007-12-05 16:43:11 +09001366 unsigned int si;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001367
1368 VPRINTK("ENTER\n");
1369
Tejun Heoff2aeb12007-12-05 16:43:11 +09001370 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1371 aprd = (si < 5) ? &cpb->aprd[si] :
1372 &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (si-5)];
1373 nv_adma_fill_aprd(qc, sg, si, aprd);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001374 }
Tejun Heoff2aeb12007-12-05 16:43:11 +09001375 if (si > 5)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001376 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag)));
Robert Hancock41949ed2007-02-19 19:02:27 -06001377 else
1378 cpb->next_aprd = cpu_to_le64(0);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001379}
1380
Robert Hancock382a6652007-02-05 16:26:02 -08001381static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1382{
1383 struct nv_adma_port_priv *pp = qc->ap->private_data;
1384
1385 /* ADMA engine can only be used for non-ATAPI DMA commands,
Robert Hancock3f3debd2007-11-25 16:59:36 -06001386 or interrupt-driven no-data commands. */
Jeff Garzikb4479162007-10-25 20:47:30 -04001387 if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
Robert Hancock3f3debd2007-11-25 16:59:36 -06001388 (qc->tf.flags & ATA_TFLAG_POLLING))
Robert Hancock382a6652007-02-05 16:26:02 -08001389 return 1;
1390
Jeff Garzikb4479162007-10-25 20:47:30 -04001391 if ((qc->flags & ATA_QCFLAG_DMAMAP) ||
Robert Hancock382a6652007-02-05 16:26:02 -08001392 (qc->tf.protocol == ATA_PROT_NODATA))
1393 return 0;
1394
1395 return 1;
1396}
1397
Robert Hancockfbbb2622006-10-27 19:08:41 -07001398static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1399{
1400 struct nv_adma_port_priv *pp = qc->ap->private_data;
1401 struct nv_adma_cpb *cpb = &pp->cpb[qc->tag];
1402 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
Robert Hancockfbbb2622006-10-27 19:08:41 -07001403 NV_CPB_CTL_IEN;
1404
Robert Hancock382a6652007-02-05 16:26:02 -08001405 if (nv_adma_use_reg_mode(qc)) {
Robert Hancock3f3debd2007-11-25 16:59:36 -06001406 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1407 (qc->flags & ATA_QCFLAG_DMAMAP));
Robert Hancock2dec7552006-11-26 14:20:19 -06001408 nv_adma_register_mode(qc->ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001409 ata_sff_qc_prep(qc);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001410 return;
1411 }
1412
Robert Hancock41949ed2007-02-19 19:02:27 -06001413 cpb->resp_flags = NV_CPB_RESP_DONE;
1414 wmb();
1415 cpb->ctl_flags = 0;
1416 wmb();
Robert Hancockfbbb2622006-10-27 19:08:41 -07001417
1418 cpb->len = 3;
1419 cpb->tag = qc->tag;
1420 cpb->next_cpb_idx = 0;
1421
1422 /* turn on NCQ flags for NCQ commands */
1423 if (qc->tf.protocol == ATA_PROT_NCQ)
1424 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1425
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001426 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1427
Robert Hancockfbbb2622006-10-27 19:08:41 -07001428 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1429
Jeff Garzikb4479162007-10-25 20:47:30 -04001430 if (qc->flags & ATA_QCFLAG_DMAMAP) {
Robert Hancock382a6652007-02-05 16:26:02 -08001431 nv_adma_fill_sg(qc, cpb);
1432 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1433 } else
1434 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001435
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001436 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID
1437 until we are finished filling in all of the contents */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001438 wmb();
1439 cpb->ctl_flags = ctl_flags;
Robert Hancock41949ed2007-02-19 19:02:27 -06001440 wmb();
1441 cpb->resp_flags = 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001442}
1443
1444static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1445{
Robert Hancock2dec7552006-11-26 14:20:19 -06001446 struct nv_adma_port_priv *pp = qc->ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001447 void __iomem *mmio = pp->ctl_block;
Robert Hancock5e5c74a2007-02-19 18:42:30 -06001448 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001449
1450 VPRINTK("ENTER\n");
1451
Robert Hancock3f3debd2007-11-25 16:59:36 -06001452 /* We can't handle result taskfile with NCQ commands, since
1453 retrieving the taskfile switches us out of ADMA mode and would abort
1454 existing commands. */
1455 if (unlikely(qc->tf.protocol == ATA_PROT_NCQ &&
1456 (qc->flags & ATA_QCFLAG_RESULT_TF))) {
1457 ata_dev_printk(qc->dev, KERN_ERR,
1458 "NCQ w/ RESULT_TF not allowed\n");
1459 return AC_ERR_SYSTEM;
1460 }
1461
Robert Hancock382a6652007-02-05 16:26:02 -08001462 if (nv_adma_use_reg_mode(qc)) {
Robert Hancockfbbb2622006-10-27 19:08:41 -07001463 /* use ATA register mode */
Robert Hancock382a6652007-02-05 16:26:02 -08001464 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
Robert Hancock3f3debd2007-11-25 16:59:36 -06001465 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1466 (qc->flags & ATA_QCFLAG_DMAMAP));
Robert Hancockfbbb2622006-10-27 19:08:41 -07001467 nv_adma_register_mode(qc->ap);
Tejun Heo9363c382008-04-07 22:47:16 +09001468 return ata_sff_qc_issue(qc);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001469 } else
1470 nv_adma_mode(qc->ap);
1471
1472 /* write append register, command tag in lower 8 bits
1473 and (number of cpbs to append -1) in top 8 bits */
1474 wmb();
Robert Hancock5e5c74a2007-02-19 18:42:30 -06001475
Jeff Garzikb4479162007-10-25 20:47:30 -04001476 if (curr_ncq != pp->last_issue_ncq) {
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001477 /* Seems to need some delay before switching between NCQ and
1478 non-NCQ commands, else we get command timeouts and such. */
Robert Hancock5e5c74a2007-02-19 18:42:30 -06001479 udelay(20);
1480 pp->last_issue_ncq = curr_ncq;
1481 }
1482
Robert Hancockfbbb2622006-10-27 19:08:41 -07001483 writew(qc->tag, mmio + NV_ADMA_APPEND);
1484
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001485 DPRINTK("Issued tag %u\n", qc->tag);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001486
1487 return 0;
1488}
1489
David Howells7d12e782006-10-05 14:55:46 +01001490static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491{
Jeff Garzikcca39742006-08-24 03:19:22 -04001492 struct ata_host *host = dev_instance;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493 unsigned int i;
1494 unsigned int handled = 0;
1495 unsigned long flags;
1496
Jeff Garzikcca39742006-08-24 03:19:22 -04001497 spin_lock_irqsave(&host->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001498
Jeff Garzikcca39742006-08-24 03:19:22 -04001499 for (i = 0; i < host->n_ports; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500 struct ata_port *ap;
1501
Jeff Garzikcca39742006-08-24 03:19:22 -04001502 ap = host->ports[i];
Tejun Heoc1389502005-08-22 14:59:24 +09001503 if (ap &&
Jeff Garzik029f5462006-04-02 10:30:40 -04001504 !(ap->flags & ATA_FLAG_DISABLED)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001505 struct ata_queued_cmd *qc;
1506
Tejun Heo9af5c9c2007-08-06 18:36:22 +09001507 qc = ata_qc_from_tag(ap, ap->link.active_tag);
Albert Leee50362e2005-09-27 17:39:50 +08001508 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
Tejun Heo9363c382008-04-07 22:47:16 +09001509 handled += ata_sff_host_intr(ap, qc);
Andrew Chewb8870302006-01-04 19:13:04 -08001510 else
1511 // No request pending? Clear interrupt status
1512 // anyway, in case there's one pending.
Tejun Heo5682ed32008-04-07 22:47:16 +09001513 ap->ops->sff_check_status(ap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 }
1515
1516 }
1517
Jeff Garzikcca39742006-08-24 03:19:22 -04001518 spin_unlock_irqrestore(&host->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519
1520 return IRQ_RETVAL(handled);
1521}
1522
Jeff Garzikcca39742006-08-24 03:19:22 -04001523static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat)
Tejun Heoada364e2006-06-17 15:49:56 +09001524{
1525 int i, handled = 0;
1526
Jeff Garzikcca39742006-08-24 03:19:22 -04001527 for (i = 0; i < host->n_ports; i++) {
1528 struct ata_port *ap = host->ports[i];
Tejun Heoada364e2006-06-17 15:49:56 +09001529
1530 if (ap && !(ap->flags & ATA_FLAG_DISABLED))
1531 handled += nv_host_intr(ap, irq_stat);
1532
1533 irq_stat >>= NV_INT_PORT_SHIFT;
1534 }
1535
1536 return IRQ_RETVAL(handled);
1537}
1538
David Howells7d12e782006-10-05 14:55:46 +01001539static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
Tejun Heoada364e2006-06-17 15:49:56 +09001540{
Jeff Garzikcca39742006-08-24 03:19:22 -04001541 struct ata_host *host = dev_instance;
Tejun Heoada364e2006-06-17 15:49:56 +09001542 u8 irq_stat;
1543 irqreturn_t ret;
1544
Jeff Garzikcca39742006-08-24 03:19:22 -04001545 spin_lock(&host->lock);
Tejun Heo0d5ff562007-02-01 15:06:36 +09001546 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
Jeff Garzikcca39742006-08-24 03:19:22 -04001547 ret = nv_do_interrupt(host, irq_stat);
1548 spin_unlock(&host->lock);
Tejun Heoada364e2006-06-17 15:49:56 +09001549
1550 return ret;
1551}
1552
David Howells7d12e782006-10-05 14:55:46 +01001553static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
Tejun Heoada364e2006-06-17 15:49:56 +09001554{
Jeff Garzikcca39742006-08-24 03:19:22 -04001555 struct ata_host *host = dev_instance;
Tejun Heoada364e2006-06-17 15:49:56 +09001556 u8 irq_stat;
1557 irqreturn_t ret;
1558
Jeff Garzikcca39742006-08-24 03:19:22 -04001559 spin_lock(&host->lock);
Tejun Heo0d5ff562007-02-01 15:06:36 +09001560 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
Jeff Garzikcca39742006-08-24 03:19:22 -04001561 ret = nv_do_interrupt(host, irq_stat);
1562 spin_unlock(&host->lock);
Tejun Heoada364e2006-06-17 15:49:56 +09001563
1564 return ret;
1565}
1566
Tejun Heo82ef04f2008-07-31 17:02:40 +09001567static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001569 if (sc_reg > SCR_CONTROL)
Tejun Heoda3dbb12007-07-16 14:29:40 +09001570 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001571
Tejun Heo82ef04f2008-07-31 17:02:40 +09001572 *val = ioread32(link->ap->ioaddr.scr_addr + (sc_reg * 4));
Tejun Heoda3dbb12007-07-16 14:29:40 +09001573 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001574}
1575
Tejun Heo82ef04f2008-07-31 17:02:40 +09001576static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001578 if (sc_reg > SCR_CONTROL)
Tejun Heoda3dbb12007-07-16 14:29:40 +09001579 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001580
Tejun Heo82ef04f2008-07-31 17:02:40 +09001581 iowrite32(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
Tejun Heoda3dbb12007-07-16 14:29:40 +09001582 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583}
1584
Tejun Heo7f4774b2009-06-10 16:29:07 +09001585static int nv_hardreset(struct ata_link *link, unsigned int *class,
1586 unsigned long deadline)
Tejun Heoe8caa3c2009-01-25 11:25:22 +09001587{
Tejun Heo7f4774b2009-06-10 16:29:07 +09001588 struct ata_eh_context *ehc = &link->eh_context;
Tejun Heoe8caa3c2009-01-25 11:25:22 +09001589
Tejun Heo7f4774b2009-06-10 16:29:07 +09001590 /* Do hardreset iff it's post-boot probing, please read the
1591 * comment above port ops for details.
1592 */
1593 if (!(link->ap->pflags & ATA_PFLAG_LOADING) &&
1594 !ata_dev_enabled(link->device))
1595 sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
1596 NULL, NULL);
Tejun Heo6489e322009-10-14 11:18:28 +09001597 else {
1598 const unsigned long *timing = sata_ehc_deb_timing(ehc);
1599 int rc;
1600
1601 if (!(ehc->i.flags & ATA_EHI_QUIET))
1602 ata_link_printk(link, KERN_INFO, "nv: skipping "
1603 "hardreset on occupied port\n");
1604
1605 /* make sure the link is online */
1606 rc = sata_link_resume(link, timing, deadline);
1607 /* whine about phy resume failure but proceed */
1608 if (rc && rc != -EOPNOTSUPP)
1609 ata_link_printk(link, KERN_WARNING, "failed to resume "
1610 "link (errno=%d)\n", rc);
1611 }
Tejun Heo7f4774b2009-06-10 16:29:07 +09001612
1613 /* device signature acquisition is unreliable */
1614 return -EAGAIN;
Tejun Heoe8caa3c2009-01-25 11:25:22 +09001615}
1616
Tejun Heo39f87582006-06-17 15:49:56 +09001617static void nv_nf2_freeze(struct ata_port *ap)
1618{
Tejun Heo0d5ff562007-02-01 15:06:36 +09001619 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
Tejun Heo39f87582006-06-17 15:49:56 +09001620 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1621 u8 mask;
1622
Tejun Heo0d5ff562007-02-01 15:06:36 +09001623 mask = ioread8(scr_addr + NV_INT_ENABLE);
Tejun Heo39f87582006-06-17 15:49:56 +09001624 mask &= ~(NV_INT_ALL << shift);
Tejun Heo0d5ff562007-02-01 15:06:36 +09001625 iowrite8(mask, scr_addr + NV_INT_ENABLE);
Tejun Heo39f87582006-06-17 15:49:56 +09001626}
1627
1628static void nv_nf2_thaw(struct ata_port *ap)
1629{
Tejun Heo0d5ff562007-02-01 15:06:36 +09001630 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
Tejun Heo39f87582006-06-17 15:49:56 +09001631 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1632 u8 mask;
1633
Tejun Heo0d5ff562007-02-01 15:06:36 +09001634 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
Tejun Heo39f87582006-06-17 15:49:56 +09001635
Tejun Heo0d5ff562007-02-01 15:06:36 +09001636 mask = ioread8(scr_addr + NV_INT_ENABLE);
Tejun Heo39f87582006-06-17 15:49:56 +09001637 mask |= (NV_INT_MASK << shift);
Tejun Heo0d5ff562007-02-01 15:06:36 +09001638 iowrite8(mask, scr_addr + NV_INT_ENABLE);
Tejun Heo39f87582006-06-17 15:49:56 +09001639}
1640
1641static void nv_ck804_freeze(struct ata_port *ap)
1642{
Tejun Heo0d5ff562007-02-01 15:06:36 +09001643 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
Tejun Heo39f87582006-06-17 15:49:56 +09001644 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1645 u8 mask;
1646
1647 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1648 mask &= ~(NV_INT_ALL << shift);
1649 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1650}
1651
1652static void nv_ck804_thaw(struct ata_port *ap)
1653{
Tejun Heo0d5ff562007-02-01 15:06:36 +09001654 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
Tejun Heo39f87582006-06-17 15:49:56 +09001655 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1656 u8 mask;
1657
1658 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1659
1660 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1661 mask |= (NV_INT_MASK << shift);
1662 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1663}
1664
Kuan Luof140f0f2007-10-15 15:16:53 -04001665static void nv_mcp55_freeze(struct ata_port *ap)
1666{
1667 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1668 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1669 u32 mask;
1670
1671 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1672
1673 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1674 mask &= ~(NV_INT_ALL_MCP55 << shift);
1675 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
Tejun Heo9363c382008-04-07 22:47:16 +09001676 ata_sff_freeze(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04001677}
1678
1679static void nv_mcp55_thaw(struct ata_port *ap)
1680{
1681 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1682 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1683 u32 mask;
1684
1685 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1686
1687 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1688 mask |= (NV_INT_MASK_MCP55 << shift);
1689 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
Tejun Heo9363c382008-04-07 22:47:16 +09001690 ata_sff_thaw(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04001691}
1692
Robert Hancockfbbb2622006-10-27 19:08:41 -07001693static void nv_adma_error_handler(struct ata_port *ap)
1694{
1695 struct nv_adma_port_priv *pp = ap->private_data;
Jeff Garzikb4479162007-10-25 20:47:30 -04001696 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001697 void __iomem *mmio = pp->ctl_block;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001698 int i;
1699 u16 tmp;
Jeff Garzika84471f2007-02-26 05:51:33 -05001700
Jeff Garzikb4479162007-10-25 20:47:30 -04001701 if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
Robert Hancock2cb27852007-02-11 18:34:44 -06001702 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1703 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1704 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1705 u32 status = readw(mmio + NV_ADMA_STAT);
Robert Hancock08af7412007-02-19 19:01:59 -06001706 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1707 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
Robert Hancock2cb27852007-02-11 18:34:44 -06001708
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001709 ata_port_printk(ap, KERN_ERR,
1710 "EH in ADMA mode, notifier 0x%X "
Robert Hancock08af7412007-02-19 19:01:59 -06001711 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1712 "next cpb count 0x%X next cpb idx 0x%x\n",
1713 notifier, notifier_error, gen_ctl, status,
1714 cpb_count, next_cpb_idx);
Robert Hancock2cb27852007-02-11 18:34:44 -06001715
Jeff Garzikb4479162007-10-25 20:47:30 -04001716 for (i = 0; i < NV_ADMA_MAX_CPBS; i++) {
Robert Hancock2cb27852007-02-11 18:34:44 -06001717 struct nv_adma_cpb *cpb = &pp->cpb[i];
Jeff Garzikb4479162007-10-25 20:47:30 -04001718 if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001719 ap->link.sactive & (1 << i))
Robert Hancock2cb27852007-02-11 18:34:44 -06001720 ata_port_printk(ap, KERN_ERR,
1721 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1722 i, cpb->ctl_flags, cpb->resp_flags);
1723 }
1724 }
Robert Hancockfbbb2622006-10-27 19:08:41 -07001725
Robert Hancockfbbb2622006-10-27 19:08:41 -07001726 /* Push us back into port register mode for error handling. */
1727 nv_adma_register_mode(ap);
1728
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001729 /* Mark all of the CPBs as invalid to prevent them from
1730 being executed */
Jeff Garzikb4479162007-10-25 20:47:30 -04001731 for (i = 0; i < NV_ADMA_MAX_CPBS; i++)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001732 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1733
1734 /* clear CPB fetch count */
1735 writew(0, mmio + NV_ADMA_CPB_COUNT);
1736
1737 /* Reset channel */
1738 tmp = readw(mmio + NV_ADMA_CTL);
1739 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzikb4479162007-10-25 20:47:30 -04001740 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001741 udelay(1);
1742 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzikb4479162007-10-25 20:47:30 -04001743 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001744 }
1745
Tejun Heo9363c382008-04-07 22:47:16 +09001746 ata_sff_error_handler(ap);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001747}
1748
Kuan Luof140f0f2007-10-15 15:16:53 -04001749static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc)
1750{
1751 struct nv_swncq_port_priv *pp = ap->private_data;
1752 struct defer_queue *dq = &pp->defer_queue;
1753
1754 /* queue is full */
1755 WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE);
1756 dq->defer_bits |= (1 << qc->tag);
1757 dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->tag;
1758}
1759
1760static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap)
1761{
1762 struct nv_swncq_port_priv *pp = ap->private_data;
1763 struct defer_queue *dq = &pp->defer_queue;
1764 unsigned int tag;
1765
1766 if (dq->head == dq->tail) /* null queue */
1767 return NULL;
1768
1769 tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)];
1770 dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON;
1771 WARN_ON(!(dq->defer_bits & (1 << tag)));
1772 dq->defer_bits &= ~(1 << tag);
1773
1774 return ata_qc_from_tag(ap, tag);
1775}
1776
1777static void nv_swncq_fis_reinit(struct ata_port *ap)
1778{
1779 struct nv_swncq_port_priv *pp = ap->private_data;
1780
1781 pp->dhfis_bits = 0;
1782 pp->dmafis_bits = 0;
1783 pp->sdbfis_bits = 0;
1784 pp->ncq_flags = 0;
1785}
1786
1787static void nv_swncq_pp_reinit(struct ata_port *ap)
1788{
1789 struct nv_swncq_port_priv *pp = ap->private_data;
1790 struct defer_queue *dq = &pp->defer_queue;
1791
1792 dq->head = 0;
1793 dq->tail = 0;
1794 dq->defer_bits = 0;
1795 pp->qc_active = 0;
1796 pp->last_issue_tag = ATA_TAG_POISON;
1797 nv_swncq_fis_reinit(ap);
1798}
1799
1800static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis)
1801{
1802 struct nv_swncq_port_priv *pp = ap->private_data;
1803
1804 writew(fis, pp->irq_block);
1805}
1806
1807static void __ata_bmdma_stop(struct ata_port *ap)
1808{
1809 struct ata_queued_cmd qc;
1810
1811 qc.ap = ap;
1812 ata_bmdma_stop(&qc);
1813}
1814
1815static void nv_swncq_ncq_stop(struct ata_port *ap)
1816{
1817 struct nv_swncq_port_priv *pp = ap->private_data;
1818 unsigned int i;
1819 u32 sactive;
1820 u32 done_mask;
1821
1822 ata_port_printk(ap, KERN_ERR,
1823 "EH in SWNCQ mode,QC:qc_active 0x%X sactive 0x%X\n",
1824 ap->qc_active, ap->link.sactive);
1825 ata_port_printk(ap, KERN_ERR,
1826 "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n "
1827 "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n",
1828 pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag,
1829 pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits);
1830
1831 ata_port_printk(ap, KERN_ERR, "ATA_REG 0x%X ERR_REG 0x%X\n",
Tejun Heo5682ed32008-04-07 22:47:16 +09001832 ap->ops->sff_check_status(ap),
Kuan Luof140f0f2007-10-15 15:16:53 -04001833 ioread8(ap->ioaddr.error_addr));
1834
1835 sactive = readl(pp->sactive_block);
1836 done_mask = pp->qc_active ^ sactive;
1837
1838 ata_port_printk(ap, KERN_ERR, "tag : dhfis dmafis sdbfis sacitve\n");
1839 for (i = 0; i < ATA_MAX_QUEUE; i++) {
1840 u8 err = 0;
1841 if (pp->qc_active & (1 << i))
1842 err = 0;
1843 else if (done_mask & (1 << i))
1844 err = 1;
1845 else
1846 continue;
1847
1848 ata_port_printk(ap, KERN_ERR,
1849 "tag 0x%x: %01x %01x %01x %01x %s\n", i,
1850 (pp->dhfis_bits >> i) & 0x1,
1851 (pp->dmafis_bits >> i) & 0x1,
1852 (pp->sdbfis_bits >> i) & 0x1,
1853 (sactive >> i) & 0x1,
1854 (err ? "error! tag doesn't exit" : " "));
1855 }
1856
1857 nv_swncq_pp_reinit(ap);
Tejun Heo5682ed32008-04-07 22:47:16 +09001858 ap->ops->sff_irq_clear(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04001859 __ata_bmdma_stop(ap);
1860 nv_swncq_irq_clear(ap, 0xffff);
1861}
1862
1863static void nv_swncq_error_handler(struct ata_port *ap)
1864{
1865 struct ata_eh_context *ehc = &ap->link.eh_context;
1866
1867 if (ap->link.sactive) {
1868 nv_swncq_ncq_stop(ap);
Tejun Heocf480622008-01-24 00:05:14 +09001869 ehc->i.action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04001870 }
1871
Tejun Heo9363c382008-04-07 22:47:16 +09001872 ata_sff_error_handler(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04001873}
1874
1875#ifdef CONFIG_PM
1876static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg)
1877{
1878 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1879 u32 tmp;
1880
1881 /* clear irq */
1882 writel(~0, mmio + NV_INT_STATUS_MCP55);
1883
1884 /* disable irq */
1885 writel(0, mmio + NV_INT_ENABLE_MCP55);
1886
1887 /* disable swncq */
1888 tmp = readl(mmio + NV_CTL_MCP55);
1889 tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ);
1890 writel(tmp, mmio + NV_CTL_MCP55);
1891
1892 return 0;
1893}
1894
1895static int nv_swncq_port_resume(struct ata_port *ap)
1896{
1897 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1898 u32 tmp;
1899
1900 /* clear irq */
1901 writel(~0, mmio + NV_INT_STATUS_MCP55);
1902
1903 /* enable irq */
1904 writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1905
1906 /* enable swncq */
1907 tmp = readl(mmio + NV_CTL_MCP55);
1908 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1909
1910 return 0;
1911}
1912#endif
1913
1914static void nv_swncq_host_init(struct ata_host *host)
1915{
1916 u32 tmp;
1917 void __iomem *mmio = host->iomap[NV_MMIO_BAR];
1918 struct pci_dev *pdev = to_pci_dev(host->dev);
1919 u8 regval;
1920
1921 /* disable ECO 398 */
1922 pci_read_config_byte(pdev, 0x7f, &regval);
1923 regval &= ~(1 << 7);
1924 pci_write_config_byte(pdev, 0x7f, regval);
1925
1926 /* enable swncq */
1927 tmp = readl(mmio + NV_CTL_MCP55);
1928 VPRINTK("HOST_CTL:0x%X\n", tmp);
1929 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1930
1931 /* enable irq intr */
1932 tmp = readl(mmio + NV_INT_ENABLE_MCP55);
1933 VPRINTK("HOST_ENABLE:0x%X\n", tmp);
1934 writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1935
1936 /* clear port irq */
1937 writel(~0x0, mmio + NV_INT_STATUS_MCP55);
1938}
1939
1940static int nv_swncq_slave_config(struct scsi_device *sdev)
1941{
1942 struct ata_port *ap = ata_shost_to_port(sdev->host);
1943 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
1944 struct ata_device *dev;
1945 int rc;
1946 u8 rev;
1947 u8 check_maxtor = 0;
1948 unsigned char model_num[ATA_ID_PROD_LEN + 1];
1949
1950 rc = ata_scsi_slave_config(sdev);
1951 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
1952 /* Not a proper libata device, ignore */
1953 return rc;
1954
1955 dev = &ap->link.device[sdev->id];
1956 if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI)
1957 return rc;
1958
1959 /* if MCP51 and Maxtor, then disable ncq */
1960 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA ||
1961 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2)
1962 check_maxtor = 1;
1963
1964 /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */
1965 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA ||
1966 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) {
1967 pci_read_config_byte(pdev, 0x8, &rev);
1968 if (rev <= 0xa2)
1969 check_maxtor = 1;
1970 }
1971
1972 if (!check_maxtor)
1973 return rc;
1974
1975 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
1976
1977 if (strncmp(model_num, "Maxtor", 6) == 0) {
Mike Christiee881a172009-10-15 17:46:39 -07001978 ata_scsi_change_queue_depth(sdev, 1, SCSI_QDEPTH_DEFAULT);
Kuan Luof140f0f2007-10-15 15:16:53 -04001979 ata_dev_printk(dev, KERN_NOTICE,
1980 "Disabling SWNCQ mode (depth %x)\n", sdev->queue_depth);
1981 }
1982
1983 return rc;
1984}
1985
1986static int nv_swncq_port_start(struct ata_port *ap)
1987{
1988 struct device *dev = ap->host->dev;
1989 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1990 struct nv_swncq_port_priv *pp;
1991 int rc;
1992
1993 rc = ata_port_start(ap);
1994 if (rc)
1995 return rc;
1996
1997 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1998 if (!pp)
1999 return -ENOMEM;
2000
2001 pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE,
2002 &pp->prd_dma, GFP_KERNEL);
2003 if (!pp->prd)
2004 return -ENOMEM;
2005 memset(pp->prd, 0, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE);
2006
2007 ap->private_data = pp;
2008 pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE;
2009 pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2;
2010 pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2;
2011
2012 return 0;
2013}
2014
2015static void nv_swncq_qc_prep(struct ata_queued_cmd *qc)
2016{
2017 if (qc->tf.protocol != ATA_PROT_NCQ) {
Tejun Heo9363c382008-04-07 22:47:16 +09002018 ata_sff_qc_prep(qc);
Kuan Luof140f0f2007-10-15 15:16:53 -04002019 return;
2020 }
2021
2022 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
2023 return;
2024
2025 nv_swncq_fill_sg(qc);
2026}
2027
2028static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
2029{
2030 struct ata_port *ap = qc->ap;
2031 struct scatterlist *sg;
Kuan Luof140f0f2007-10-15 15:16:53 -04002032 struct nv_swncq_port_priv *pp = ap->private_data;
2033 struct ata_prd *prd;
Tejun Heoff2aeb12007-12-05 16:43:11 +09002034 unsigned int si, idx;
Kuan Luof140f0f2007-10-15 15:16:53 -04002035
2036 prd = pp->prd + ATA_MAX_PRD * qc->tag;
2037
2038 idx = 0;
Tejun Heoff2aeb12007-12-05 16:43:11 +09002039 for_each_sg(qc->sg, sg, qc->n_elem, si) {
Kuan Luof140f0f2007-10-15 15:16:53 -04002040 u32 addr, offset;
2041 u32 sg_len, len;
2042
2043 addr = (u32)sg_dma_address(sg);
2044 sg_len = sg_dma_len(sg);
2045
2046 while (sg_len) {
2047 offset = addr & 0xffff;
2048 len = sg_len;
2049 if ((offset + sg_len) > 0x10000)
2050 len = 0x10000 - offset;
2051
2052 prd[idx].addr = cpu_to_le32(addr);
2053 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
2054
2055 idx++;
2056 sg_len -= len;
2057 addr += len;
2058 }
2059 }
2060
Tejun Heoff2aeb12007-12-05 16:43:11 +09002061 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
Kuan Luof140f0f2007-10-15 15:16:53 -04002062}
2063
2064static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap,
2065 struct ata_queued_cmd *qc)
2066{
2067 struct nv_swncq_port_priv *pp = ap->private_data;
2068
2069 if (qc == NULL)
2070 return 0;
2071
2072 DPRINTK("Enter\n");
2073
2074 writel((1 << qc->tag), pp->sactive_block);
2075 pp->last_issue_tag = qc->tag;
2076 pp->dhfis_bits &= ~(1 << qc->tag);
2077 pp->dmafis_bits &= ~(1 << qc->tag);
2078 pp->qc_active |= (0x1 << qc->tag);
2079
Tejun Heo5682ed32008-04-07 22:47:16 +09002080 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */
2081 ap->ops->sff_exec_command(ap, &qc->tf);
Kuan Luof140f0f2007-10-15 15:16:53 -04002082
2083 DPRINTK("Issued tag %u\n", qc->tag);
2084
2085 return 0;
2086}
2087
2088static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc)
2089{
2090 struct ata_port *ap = qc->ap;
2091 struct nv_swncq_port_priv *pp = ap->private_data;
2092
2093 if (qc->tf.protocol != ATA_PROT_NCQ)
Tejun Heo9363c382008-04-07 22:47:16 +09002094 return ata_sff_qc_issue(qc);
Kuan Luof140f0f2007-10-15 15:16:53 -04002095
2096 DPRINTK("Enter\n");
2097
2098 if (!pp->qc_active)
2099 nv_swncq_issue_atacmd(ap, qc);
2100 else
2101 nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */
2102
2103 return 0;
2104}
2105
2106static void nv_swncq_hotplug(struct ata_port *ap, u32 fis)
2107{
2108 u32 serror;
2109 struct ata_eh_info *ehi = &ap->link.eh_info;
2110
2111 ata_ehi_clear_desc(ehi);
2112
2113 /* AHCI needs SError cleared; otherwise, it might lock up */
2114 sata_scr_read(&ap->link, SCR_ERROR, &serror);
2115 sata_scr_write(&ap->link, SCR_ERROR, serror);
2116
2117 /* analyze @irq_stat */
2118 if (fis & NV_SWNCQ_IRQ_ADDED)
2119 ata_ehi_push_desc(ehi, "hot plug");
2120 else if (fis & NV_SWNCQ_IRQ_REMOVED)
2121 ata_ehi_push_desc(ehi, "hot unplug");
2122
2123 ata_ehi_hotplugged(ehi);
2124
2125 /* okay, let's hand over to EH */
2126 ehi->serror |= serror;
2127
2128 ata_port_freeze(ap);
2129}
2130
2131static int nv_swncq_sdbfis(struct ata_port *ap)
2132{
2133 struct ata_queued_cmd *qc;
2134 struct nv_swncq_port_priv *pp = ap->private_data;
2135 struct ata_eh_info *ehi = &ap->link.eh_info;
2136 u32 sactive;
2137 int nr_done = 0;
2138 u32 done_mask;
2139 int i;
2140 u8 host_stat;
2141 u8 lack_dhfis = 0;
2142
2143 host_stat = ap->ops->bmdma_status(ap);
2144 if (unlikely(host_stat & ATA_DMA_ERR)) {
2145 /* error when transfering data to/from memory */
2146 ata_ehi_clear_desc(ehi);
2147 ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
2148 ehi->err_mask |= AC_ERR_HOST_BUS;
Tejun Heocf480622008-01-24 00:05:14 +09002149 ehi->action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04002150 return -EINVAL;
2151 }
2152
Tejun Heo5682ed32008-04-07 22:47:16 +09002153 ap->ops->sff_irq_clear(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04002154 __ata_bmdma_stop(ap);
2155
2156 sactive = readl(pp->sactive_block);
2157 done_mask = pp->qc_active ^ sactive;
2158
2159 if (unlikely(done_mask & sactive)) {
2160 ata_ehi_clear_desc(ehi);
2161 ata_ehi_push_desc(ehi, "illegal SWNCQ:qc_active transition"
2162 "(%08x->%08x)", pp->qc_active, sactive);
2163 ehi->err_mask |= AC_ERR_HSM;
Tejun Heocf480622008-01-24 00:05:14 +09002164 ehi->action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04002165 return -EINVAL;
2166 }
2167 for (i = 0; i < ATA_MAX_QUEUE; i++) {
2168 if (!(done_mask & (1 << i)))
2169 continue;
2170
2171 qc = ata_qc_from_tag(ap, i);
2172 if (qc) {
2173 ata_qc_complete(qc);
2174 pp->qc_active &= ~(1 << i);
2175 pp->dhfis_bits &= ~(1 << i);
2176 pp->dmafis_bits &= ~(1 << i);
2177 pp->sdbfis_bits |= (1 << i);
2178 nr_done++;
2179 }
2180 }
2181
2182 if (!ap->qc_active) {
2183 DPRINTK("over\n");
2184 nv_swncq_pp_reinit(ap);
2185 return nr_done;
2186 }
2187
2188 if (pp->qc_active & pp->dhfis_bits)
2189 return nr_done;
2190
2191 if ((pp->ncq_flags & ncq_saw_backout) ||
2192 (pp->qc_active ^ pp->dhfis_bits))
2193 /* if the controller cann't get a device to host register FIS,
2194 * The driver needs to reissue the new command.
2195 */
2196 lack_dhfis = 1;
2197
2198 DPRINTK("id 0x%x QC: qc_active 0x%x,"
2199 "SWNCQ:qc_active 0x%X defer_bits %X "
2200 "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n",
2201 ap->print_id, ap->qc_active, pp->qc_active,
2202 pp->defer_queue.defer_bits, pp->dhfis_bits,
2203 pp->dmafis_bits, pp->last_issue_tag);
2204
2205 nv_swncq_fis_reinit(ap);
2206
2207 if (lack_dhfis) {
2208 qc = ata_qc_from_tag(ap, pp->last_issue_tag);
2209 nv_swncq_issue_atacmd(ap, qc);
2210 return nr_done;
2211 }
2212
2213 if (pp->defer_queue.defer_bits) {
2214 /* send deferral queue command */
2215 qc = nv_swncq_qc_from_dq(ap);
2216 WARN_ON(qc == NULL);
2217 nv_swncq_issue_atacmd(ap, qc);
2218 }
2219
2220 return nr_done;
2221}
2222
2223static inline u32 nv_swncq_tag(struct ata_port *ap)
2224{
2225 struct nv_swncq_port_priv *pp = ap->private_data;
2226 u32 tag;
2227
2228 tag = readb(pp->tag_block) >> 2;
2229 return (tag & 0x1f);
2230}
2231
2232static int nv_swncq_dmafis(struct ata_port *ap)
2233{
2234 struct ata_queued_cmd *qc;
2235 unsigned int rw;
2236 u8 dmactl;
2237 u32 tag;
2238 struct nv_swncq_port_priv *pp = ap->private_data;
2239
2240 __ata_bmdma_stop(ap);
2241 tag = nv_swncq_tag(ap);
2242
2243 DPRINTK("dma setup tag 0x%x\n", tag);
2244 qc = ata_qc_from_tag(ap, tag);
2245
2246 if (unlikely(!qc))
2247 return 0;
2248
2249 rw = qc->tf.flags & ATA_TFLAG_WRITE;
2250
2251 /* load PRD table addr. */
2252 iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->tag,
2253 ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
2254
2255 /* specify data direction, triple-check start bit is clear */
2256 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2257 dmactl &= ~ATA_DMA_WR;
2258 if (!rw)
2259 dmactl |= ATA_DMA_WR;
2260
2261 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2262
2263 return 1;
2264}
2265
2266static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
2267{
2268 struct nv_swncq_port_priv *pp = ap->private_data;
2269 struct ata_queued_cmd *qc;
2270 struct ata_eh_info *ehi = &ap->link.eh_info;
2271 u32 serror;
2272 u8 ata_stat;
2273 int rc = 0;
2274
Tejun Heo5682ed32008-04-07 22:47:16 +09002275 ata_stat = ap->ops->sff_check_status(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04002276 nv_swncq_irq_clear(ap, fis);
2277 if (!fis)
2278 return;
2279
2280 if (ap->pflags & ATA_PFLAG_FROZEN)
2281 return;
2282
2283 if (fis & NV_SWNCQ_IRQ_HOTPLUG) {
2284 nv_swncq_hotplug(ap, fis);
2285 return;
2286 }
2287
2288 if (!pp->qc_active)
2289 return;
2290
Tejun Heo82ef04f2008-07-31 17:02:40 +09002291 if (ap->ops->scr_read(&ap->link, SCR_ERROR, &serror))
Kuan Luof140f0f2007-10-15 15:16:53 -04002292 return;
Tejun Heo82ef04f2008-07-31 17:02:40 +09002293 ap->ops->scr_write(&ap->link, SCR_ERROR, serror);
Kuan Luof140f0f2007-10-15 15:16:53 -04002294
2295 if (ata_stat & ATA_ERR) {
2296 ata_ehi_clear_desc(ehi);
2297 ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis);
2298 ehi->err_mask |= AC_ERR_DEV;
2299 ehi->serror |= serror;
Tejun Heocf480622008-01-24 00:05:14 +09002300 ehi->action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04002301 ata_port_freeze(ap);
2302 return;
2303 }
2304
2305 if (fis & NV_SWNCQ_IRQ_BACKOUT) {
2306 /* If the IRQ is backout, driver must issue
2307 * the new command again some time later.
2308 */
2309 pp->ncq_flags |= ncq_saw_backout;
2310 }
2311
2312 if (fis & NV_SWNCQ_IRQ_SDBFIS) {
2313 pp->ncq_flags |= ncq_saw_sdb;
2314 DPRINTK("id 0x%x SWNCQ: qc_active 0x%X "
2315 "dhfis 0x%X dmafis 0x%X sactive 0x%X\n",
2316 ap->print_id, pp->qc_active, pp->dhfis_bits,
2317 pp->dmafis_bits, readl(pp->sactive_block));
2318 rc = nv_swncq_sdbfis(ap);
2319 if (rc < 0)
2320 goto irq_error;
2321 }
2322
2323 if (fis & NV_SWNCQ_IRQ_DHREGFIS) {
2324 /* The interrupt indicates the new command
2325 * was transmitted correctly to the drive.
2326 */
2327 pp->dhfis_bits |= (0x1 << pp->last_issue_tag);
2328 pp->ncq_flags |= ncq_saw_d2h;
2329 if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) {
2330 ata_ehi_push_desc(ehi, "illegal fis transaction");
2331 ehi->err_mask |= AC_ERR_HSM;
Tejun Heocf480622008-01-24 00:05:14 +09002332 ehi->action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04002333 goto irq_error;
2334 }
2335
2336 if (!(fis & NV_SWNCQ_IRQ_DMASETUP) &&
2337 !(pp->ncq_flags & ncq_saw_dmas)) {
Tejun Heo5682ed32008-04-07 22:47:16 +09002338 ata_stat = ap->ops->sff_check_status(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04002339 if (ata_stat & ATA_BUSY)
2340 goto irq_exit;
2341
2342 if (pp->defer_queue.defer_bits) {
2343 DPRINTK("send next command\n");
2344 qc = nv_swncq_qc_from_dq(ap);
2345 nv_swncq_issue_atacmd(ap, qc);
2346 }
2347 }
2348 }
2349
2350 if (fis & NV_SWNCQ_IRQ_DMASETUP) {
2351 /* program the dma controller with appropriate PRD buffers
2352 * and start the DMA transfer for requested command.
2353 */
2354 pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap));
2355 pp->ncq_flags |= ncq_saw_dmas;
2356 rc = nv_swncq_dmafis(ap);
2357 }
2358
2359irq_exit:
2360 return;
2361irq_error:
2362 ata_ehi_push_desc(ehi, "fis:0x%x", fis);
2363 ata_port_freeze(ap);
2364 return;
2365}
2366
2367static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance)
2368{
2369 struct ata_host *host = dev_instance;
2370 unsigned int i;
2371 unsigned int handled = 0;
2372 unsigned long flags;
2373 u32 irq_stat;
2374
2375 spin_lock_irqsave(&host->lock, flags);
2376
2377 irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55);
2378
2379 for (i = 0; i < host->n_ports; i++) {
2380 struct ata_port *ap = host->ports[i];
2381
2382 if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
2383 if (ap->link.sactive) {
2384 nv_swncq_host_interrupt(ap, (u16)irq_stat);
2385 handled = 1;
2386 } else {
2387 if (irq_stat) /* reserve Hotplug */
2388 nv_swncq_irq_clear(ap, 0xfff0);
2389
2390 handled += nv_host_intr(ap, (u8)irq_stat);
2391 }
2392 }
2393 irq_stat >>= NV_INT_PORT_SHIFT_MCP55;
2394 }
2395
2396 spin_unlock_irqrestore(&host->lock, flags);
2397
2398 return IRQ_RETVAL(handled);
2399}
2400
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002401static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002402{
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002403 static int printed_version;
Tejun Heo1626aeb2007-05-04 12:43:58 +02002404 const struct ata_port_info *ppi[] = { NULL, NULL };
Tejun Heo95947192008-03-25 12:22:49 +09002405 struct nv_pi_priv *ipriv;
Tejun Heo9a829cc2007-04-17 23:44:08 +09002406 struct ata_host *host;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002407 struct nv_host_priv *hpriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002408 int rc;
2409 u32 bar;
Tejun Heo0d5ff562007-02-01 15:06:36 +09002410 void __iomem *base;
Robert Hancockfbbb2622006-10-27 19:08:41 -07002411 unsigned long type = ent->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412
2413 // Make sure this is a SATA controller by counting the number of bars
2414 // (NVIDIA SATA controllers will always have six bars). Otherwise,
2415 // it's an IDE controller and we ignore it.
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002416 for (bar = 0; bar < 6; bar++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002417 if (pci_resource_start(pdev, bar) == 0)
2418 return -ENODEV;
2419
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002420 if (!printed_version++)
Jeff Garzika9524a72005-10-30 14:39:11 -05002421 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002422
Tejun Heo24dc5f32007-01-20 16:00:28 +09002423 rc = pcim_enable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424 if (rc)
Tejun Heo24dc5f32007-01-20 16:00:28 +09002425 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002426
Tejun Heo9a829cc2007-04-17 23:44:08 +09002427 /* determine type and allocate host */
Kuan Luof140f0f2007-10-15 15:16:53 -04002428 if (type == CK804 && adma_enabled) {
Robert Hancockfbbb2622006-10-27 19:08:41 -07002429 dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n");
2430 type = ADMA;
Tejun Heo2d775702009-01-25 11:29:38 +09002431 } else if (type == MCP5x && swncq_enabled) {
2432 dev_printk(KERN_NOTICE, &pdev->dev, "Using SWNCQ mode\n");
2433 type = SWNCQ;
Jeff Garzik360737a2007-10-29 06:49:24 -04002434 }
2435
Tejun Heo1626aeb2007-05-04 12:43:58 +02002436 ppi[0] = &nv_port_info[type];
Tejun Heo95947192008-03-25 12:22:49 +09002437 ipriv = ppi[0]->private_data;
Tejun Heo9363c382008-04-07 22:47:16 +09002438 rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
Tejun Heo9a829cc2007-04-17 23:44:08 +09002439 if (rc)
2440 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002441
Tejun Heo24dc5f32007-01-20 16:00:28 +09002442 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002443 if (!hpriv)
Tejun Heo24dc5f32007-01-20 16:00:28 +09002444 return -ENOMEM;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002445 hpriv->type = type;
Tejun Heo9a829cc2007-04-17 23:44:08 +09002446 host->private_data = hpriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002447
Tejun Heo9a829cc2007-04-17 23:44:08 +09002448 /* request and iomap NV_MMIO_BAR */
2449 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
2450 if (rc)
2451 return rc;
2452
2453 /* configure SCR access */
2454 base = host->iomap[NV_MMIO_BAR];
2455 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
2456 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
Jeff Garzik02cbd922006-03-22 23:59:46 -05002457
Tejun Heoada364e2006-06-17 15:49:56 +09002458 /* enable SATA space for CK804 */
Robert Hancockfbbb2622006-10-27 19:08:41 -07002459 if (type >= CK804) {
Tejun Heoada364e2006-06-17 15:49:56 +09002460 u8 regval;
2461
2462 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2463 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2464 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2465 }
2466
Tejun Heo9a829cc2007-04-17 23:44:08 +09002467 /* init ADMA */
Robert Hancockfbbb2622006-10-27 19:08:41 -07002468 if (type == ADMA) {
Tejun Heo9a829cc2007-04-17 23:44:08 +09002469 rc = nv_adma_host_init(host);
Robert Hancockfbbb2622006-10-27 19:08:41 -07002470 if (rc)
Tejun Heo24dc5f32007-01-20 16:00:28 +09002471 return rc;
Jeff Garzik360737a2007-10-29 06:49:24 -04002472 } else if (type == SWNCQ)
Kuan Luof140f0f2007-10-15 15:16:53 -04002473 nv_swncq_host_init(host);
Robert Hancockfbbb2622006-10-27 19:08:41 -07002474
Tony Vroon51c89492009-08-06 00:50:09 +01002475 if (msi_enabled) {
2476 dev_printk(KERN_NOTICE, &pdev->dev, "Using MSI\n");
2477 pci_enable_msi(pdev);
2478 }
2479
Tejun Heo9a829cc2007-04-17 23:44:08 +09002480 pci_set_master(pdev);
Tejun Heo95947192008-03-25 12:22:49 +09002481 return ata_host_activate(host, pdev->irq, ipriv->irq_handler,
2482 IRQF_SHARED, ipriv->sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002483}
2484
Tejun Heo438ac6d2007-03-02 17:31:26 +09002485#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002486static int nv_pci_device_resume(struct pci_dev *pdev)
2487{
2488 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2489 struct nv_host_priv *hpriv = host->private_data;
Robert Hancockce053fa2007-02-05 16:26:04 -08002490 int rc;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002491
Robert Hancockce053fa2007-02-05 16:26:04 -08002492 rc = ata_pci_device_do_resume(pdev);
Jeff Garzikb4479162007-10-25 20:47:30 -04002493 if (rc)
Robert Hancockce053fa2007-02-05 16:26:04 -08002494 return rc;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002495
2496 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
Jeff Garzikb4479162007-10-25 20:47:30 -04002497 if (hpriv->type >= CK804) {
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002498 u8 regval;
2499
2500 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2501 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2502 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2503 }
Jeff Garzikb4479162007-10-25 20:47:30 -04002504 if (hpriv->type == ADMA) {
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002505 u32 tmp32;
2506 struct nv_adma_port_priv *pp;
2507 /* enable/disable ADMA on the ports appropriately */
2508 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2509
2510 pp = host->ports[0]->private_data;
Jeff Garzikb4479162007-10-25 20:47:30 -04002511 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002512 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002513 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002514 else
2515 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002516 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002517 pp = host->ports[1]->private_data;
Jeff Garzikb4479162007-10-25 20:47:30 -04002518 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002519 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002520 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002521 else
2522 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002523 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002524
2525 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2526 }
2527 }
2528
2529 ata_host_resume(host);
2530
2531 return 0;
2532}
Tejun Heo438ac6d2007-03-02 17:31:26 +09002533#endif
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002534
Jeff Garzikcca39742006-08-24 03:19:22 -04002535static void nv_ck804_host_stop(struct ata_host *host)
Tejun Heoada364e2006-06-17 15:49:56 +09002536{
Jeff Garzikcca39742006-08-24 03:19:22 -04002537 struct pci_dev *pdev = to_pci_dev(host->dev);
Tejun Heoada364e2006-06-17 15:49:56 +09002538 u8 regval;
2539
2540 /* disable SATA space for CK804 */
2541 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2542 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2543 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
Tejun Heoada364e2006-06-17 15:49:56 +09002544}
2545
Robert Hancockfbbb2622006-10-27 19:08:41 -07002546static void nv_adma_host_stop(struct ata_host *host)
2547{
2548 struct pci_dev *pdev = to_pci_dev(host->dev);
Robert Hancockfbbb2622006-10-27 19:08:41 -07002549 u32 tmp32;
2550
Robert Hancockfbbb2622006-10-27 19:08:41 -07002551 /* disable ADMA on the ports */
2552 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2553 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2554 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
2555 NV_MCP_SATA_CFG_20_PORT1_EN |
2556 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2557
2558 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2559
2560 nv_ck804_host_stop(host);
2561}
2562
Linus Torvalds1da177e2005-04-16 15:20:36 -07002563static int __init nv_init(void)
2564{
Pavel Roskinb7887192006-08-10 18:13:18 +09002565 return pci_register_driver(&nv_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002566}
2567
2568static void __exit nv_exit(void)
2569{
2570 pci_unregister_driver(&nv_pci_driver);
2571}
2572
2573module_init(nv_init);
2574module_exit(nv_exit);
Robert Hancockfbbb2622006-10-27 19:08:41 -07002575module_param_named(adma, adma_enabled, bool, 0444);
Brandon Ehle55f784c2009-03-01 00:02:49 -08002576MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: false)");
Kuan Luof140f0f2007-10-15 15:16:53 -04002577module_param_named(swncq, swncq_enabled, bool, 0444);
Zoltan Boszormenyid21279f2008-03-28 14:33:46 -07002578MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");
Tony Vroon51c89492009-08-06 00:50:09 +01002579module_param_named(msi, msi_enabled, bool, 0444);
2580MODULE_PARM_DESC(msi, "Enable use of MSI (Default: false)");
Kuan Luof140f0f2007-10-15 15:16:53 -04002581