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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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090041#include <linux/gfp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <linux/pci.h>
43#include <linux/init.h>
44#include <linux/blkdev.h>
45#include <linux/delay.h>
46#include <linux/interrupt.h>
Jeff Garzika9524a72005-10-30 14:39:11 -050047#include <linux/device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070048#include <scsi/scsi_host.h>
Robert Hancockfbbb2622006-10-27 19:08:41 -070049#include <scsi/scsi_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#include <linux/libata.h>
51
52#define DRV_NAME "sata_nv"
Jeff Garzik2a3103c2007-08-31 04:54:06 -040053#define DRV_VERSION "3.5"
Robert Hancockfbbb2622006-10-27 19:08:41 -070054
55#define NV_ADMA_DMA_BOUNDARY 0xffffffffUL
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Jeff Garzik10ad05d2006-03-22 23:50:50 -050057enum {
Tejun Heo0d5ff562007-02-01 15:06:36 +090058 NV_MMIO_BAR = 5,
59
Jeff Garzik10ad05d2006-03-22 23:50:50 -050060 NV_PORTS = 2,
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +010061 NV_PIO_MASK = ATA_PIO4,
62 NV_MWDMA_MASK = ATA_MWDMA2,
63 NV_UDMA_MASK = ATA_UDMA6,
Jeff Garzik10ad05d2006-03-22 23:50:50 -050064 NV_PORT0_SCR_REG_OFFSET = 0x00,
65 NV_PORT1_SCR_REG_OFFSET = 0x40,
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Tejun Heo27e4b272006-06-17 15:49:55 +090067 /* INT_STATUS/ENABLE */
Jeff Garzik10ad05d2006-03-22 23:50:50 -050068 NV_INT_STATUS = 0x10,
Jeff Garzik10ad05d2006-03-22 23:50:50 -050069 NV_INT_ENABLE = 0x11,
Tejun Heo27e4b272006-06-17 15:49:55 +090070 NV_INT_STATUS_CK804 = 0x440,
Jeff Garzik10ad05d2006-03-22 23:50:50 -050071 NV_INT_ENABLE_CK804 = 0x441,
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
Tejun Heo27e4b272006-06-17 15:49:55 +090073 /* INT_STATUS/ENABLE bits */
74 NV_INT_DEV = 0x01,
75 NV_INT_PM = 0x02,
76 NV_INT_ADDED = 0x04,
77 NV_INT_REMOVED = 0x08,
78
79 NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */
80
Tejun Heo39f87582006-06-17 15:49:56 +090081 NV_INT_ALL = 0x0f,
Tejun Heo5a44eff2006-06-17 15:49:56 +090082 NV_INT_MASK = NV_INT_DEV |
83 NV_INT_ADDED | NV_INT_REMOVED,
Tejun Heo39f87582006-06-17 15:49:56 +090084
Tejun Heo27e4b272006-06-17 15:49:55 +090085 /* INT_CONFIG */
Jeff Garzik10ad05d2006-03-22 23:50:50 -050086 NV_INT_CONFIG = 0x12,
87 NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
Jeff Garzik10ad05d2006-03-22 23:50:50 -050089 // For PCI config register 20
90 NV_MCP_SATA_CFG_20 = 0x50,
91 NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04,
Robert Hancockfbbb2622006-10-27 19:08:41 -070092 NV_MCP_SATA_CFG_20_PORT0_EN = (1 << 17),
93 NV_MCP_SATA_CFG_20_PORT1_EN = (1 << 16),
94 NV_MCP_SATA_CFG_20_PORT0_PWB_EN = (1 << 14),
95 NV_MCP_SATA_CFG_20_PORT1_PWB_EN = (1 << 12),
96
97 NV_ADMA_MAX_CPBS = 32,
98 NV_ADMA_CPB_SZ = 128,
99 NV_ADMA_APRD_SZ = 16,
100 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
101 NV_ADMA_APRD_SZ,
102 NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5,
103 NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ,
104 NV_ADMA_PORT_PRIV_DMA_SZ = NV_ADMA_MAX_CPBS *
105 (NV_ADMA_CPB_SZ + NV_ADMA_SGTBL_SZ),
106
107 /* BAR5 offset to ADMA general registers */
108 NV_ADMA_GEN = 0x400,
109 NV_ADMA_GEN_CTL = 0x00,
110 NV_ADMA_NOTIFIER_CLEAR = 0x30,
111
112 /* BAR5 offset to ADMA ports */
113 NV_ADMA_PORT = 0x480,
114
115 /* size of ADMA port register space */
116 NV_ADMA_PORT_SIZE = 0x100,
117
118 /* ADMA port registers */
119 NV_ADMA_CTL = 0x40,
120 NV_ADMA_CPB_COUNT = 0x42,
121 NV_ADMA_NEXT_CPB_IDX = 0x43,
122 NV_ADMA_STAT = 0x44,
123 NV_ADMA_CPB_BASE_LOW = 0x48,
124 NV_ADMA_CPB_BASE_HIGH = 0x4C,
125 NV_ADMA_APPEND = 0x50,
126 NV_ADMA_NOTIFIER = 0x68,
127 NV_ADMA_NOTIFIER_ERROR = 0x6C,
128
129 /* NV_ADMA_CTL register bits */
130 NV_ADMA_CTL_HOTPLUG_IEN = (1 << 0),
131 NV_ADMA_CTL_CHANNEL_RESET = (1 << 5),
132 NV_ADMA_CTL_GO = (1 << 7),
133 NV_ADMA_CTL_AIEN = (1 << 8),
134 NV_ADMA_CTL_READ_NON_COHERENT = (1 << 11),
135 NV_ADMA_CTL_WRITE_NON_COHERENT = (1 << 12),
136
137 /* CPB response flag bits */
138 NV_CPB_RESP_DONE = (1 << 0),
139 NV_CPB_RESP_ATA_ERR = (1 << 3),
140 NV_CPB_RESP_CMD_ERR = (1 << 4),
141 NV_CPB_RESP_CPB_ERR = (1 << 7),
142
143 /* CPB control flag bits */
144 NV_CPB_CTL_CPB_VALID = (1 << 0),
145 NV_CPB_CTL_QUEUE = (1 << 1),
146 NV_CPB_CTL_APRD_VALID = (1 << 2),
147 NV_CPB_CTL_IEN = (1 << 3),
148 NV_CPB_CTL_FPDMA = (1 << 4),
149
150 /* APRD flags */
151 NV_APRD_WRITE = (1 << 1),
152 NV_APRD_END = (1 << 2),
153 NV_APRD_CONT = (1 << 3),
154
155 /* NV_ADMA_STAT flags */
156 NV_ADMA_STAT_TIMEOUT = (1 << 0),
157 NV_ADMA_STAT_HOTUNPLUG = (1 << 1),
158 NV_ADMA_STAT_HOTPLUG = (1 << 2),
159 NV_ADMA_STAT_CPBERR = (1 << 4),
160 NV_ADMA_STAT_SERROR = (1 << 5),
161 NV_ADMA_STAT_CMD_COMPLETE = (1 << 6),
162 NV_ADMA_STAT_IDLE = (1 << 8),
163 NV_ADMA_STAT_LEGACY = (1 << 9),
164 NV_ADMA_STAT_STOPPED = (1 << 10),
165 NV_ADMA_STAT_DONE = (1 << 12),
166 NV_ADMA_STAT_ERR = NV_ADMA_STAT_CPBERR |
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400167 NV_ADMA_STAT_TIMEOUT,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700168
169 /* port flags */
170 NV_ADMA_PORT_REGISTER_MODE = (1 << 0),
Robert Hancock2dec7552006-11-26 14:20:19 -0600171 NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1),
Robert Hancockfbbb2622006-10-27 19:08:41 -0700172
Kuan Luof140f0f2007-10-15 15:16:53 -0400173 /* MCP55 reg offset */
174 NV_CTL_MCP55 = 0x400,
175 NV_INT_STATUS_MCP55 = 0x440,
176 NV_INT_ENABLE_MCP55 = 0x444,
177 NV_NCQ_REG_MCP55 = 0x448,
178
179 /* MCP55 */
180 NV_INT_ALL_MCP55 = 0xffff,
181 NV_INT_PORT_SHIFT_MCP55 = 16, /* each port occupies 16 bits */
182 NV_INT_MASK_MCP55 = NV_INT_ALL_MCP55 & 0xfffd,
183
184 /* SWNCQ ENABLE BITS*/
185 NV_CTL_PRI_SWNCQ = 0x02,
186 NV_CTL_SEC_SWNCQ = 0x04,
187
188 /* SW NCQ status bits*/
189 NV_SWNCQ_IRQ_DEV = (1 << 0),
190 NV_SWNCQ_IRQ_PM = (1 << 1),
191 NV_SWNCQ_IRQ_ADDED = (1 << 2),
192 NV_SWNCQ_IRQ_REMOVED = (1 << 3),
193
194 NV_SWNCQ_IRQ_BACKOUT = (1 << 4),
195 NV_SWNCQ_IRQ_SDBFIS = (1 << 5),
196 NV_SWNCQ_IRQ_DHREGFIS = (1 << 6),
197 NV_SWNCQ_IRQ_DMASETUP = (1 << 7),
198
199 NV_SWNCQ_IRQ_HOTPLUG = NV_SWNCQ_IRQ_ADDED |
200 NV_SWNCQ_IRQ_REMOVED,
201
Jeff Garzik10ad05d2006-03-22 23:50:50 -0500202};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203
Robert Hancockfbbb2622006-10-27 19:08:41 -0700204/* ADMA Physical Region Descriptor - one SG segment */
205struct nv_adma_prd {
206 __le64 addr;
207 __le32 len;
208 u8 flags;
209 u8 packet_len;
210 __le16 reserved;
211};
212
213enum nv_adma_regbits {
214 CMDEND = (1 << 15), /* end of command list */
215 WNB = (1 << 14), /* wait-not-BSY */
216 IGN = (1 << 13), /* ignore this entry */
217 CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */
218 DA2 = (1 << (2 + 8)),
219 DA1 = (1 << (1 + 8)),
220 DA0 = (1 << (0 + 8)),
221};
222
223/* ADMA Command Parameter Block
224 The first 5 SG segments are stored inside the Command Parameter Block itself.
225 If there are more than 5 segments the remainder are stored in a separate
226 memory area indicated by next_aprd. */
227struct nv_adma_cpb {
228 u8 resp_flags; /* 0 */
229 u8 reserved1; /* 1 */
230 u8 ctl_flags; /* 2 */
231 /* len is length of taskfile in 64 bit words */
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400232 u8 len; /* 3 */
Robert Hancockfbbb2622006-10-27 19:08:41 -0700233 u8 tag; /* 4 */
234 u8 next_cpb_idx; /* 5 */
235 __le16 reserved2; /* 6-7 */
236 __le16 tf[12]; /* 8-31 */
237 struct nv_adma_prd aprd[5]; /* 32-111 */
238 __le64 next_aprd; /* 112-119 */
239 __le64 reserved3; /* 120-127 */
240};
241
242
243struct nv_adma_port_priv {
244 struct nv_adma_cpb *cpb;
245 dma_addr_t cpb_dma;
246 struct nv_adma_prd *aprd;
247 dma_addr_t aprd_dma;
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400248 void __iomem *ctl_block;
249 void __iomem *gen_block;
250 void __iomem *notifier_clear_block;
Robert Hancock8959d302008-02-04 19:39:02 -0600251 u64 adma_dma_mask;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700252 u8 flags;
Robert Hancock5e5c74a2007-02-19 18:42:30 -0600253 int last_issue_ncq;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700254};
255
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600256struct nv_host_priv {
257 unsigned long type;
258};
259
Kuan Luof140f0f2007-10-15 15:16:53 -0400260struct defer_queue {
261 u32 defer_bits;
262 unsigned int head;
263 unsigned int tail;
264 unsigned int tag[ATA_MAX_QUEUE];
265};
266
267enum ncq_saw_flag_list {
268 ncq_saw_d2h = (1U << 0),
269 ncq_saw_dmas = (1U << 1),
270 ncq_saw_sdb = (1U << 2),
271 ncq_saw_backout = (1U << 3),
272};
273
274struct nv_swncq_port_priv {
Tejun Heof60d7012010-05-10 21:41:41 +0200275 struct ata_bmdma_prd *prd; /* our SG list */
Kuan Luof140f0f2007-10-15 15:16:53 -0400276 dma_addr_t prd_dma; /* and its DMA mapping */
277 void __iomem *sactive_block;
278 void __iomem *irq_block;
279 void __iomem *tag_block;
280 u32 qc_active;
281
282 unsigned int last_issue_tag;
283
284 /* fifo circular queue to store deferral command */
285 struct defer_queue defer_queue;
286
287 /* for NCQ interrupt analysis */
288 u32 dhfis_bits;
289 u32 dmafis_bits;
290 u32 sdbfis_bits;
291
292 unsigned int ncq_flags;
293};
294
295
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400296#define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & (1 << (19 + (12 * (PORT)))))
Robert Hancockfbbb2622006-10-27 19:08:41 -0700297
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400298static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
Tejun Heo438ac6d2007-03-02 17:31:26 +0900299#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600300static int nv_pci_device_resume(struct pci_dev *pdev);
Tejun Heo438ac6d2007-03-02 17:31:26 +0900301#endif
Jeff Garzikcca39742006-08-24 03:19:22 -0400302static void nv_ck804_host_stop(struct ata_host *host);
David Howells7d12e782006-10-05 14:55:46 +0100303static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
304static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
305static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
Tejun Heo82ef04f2008-07-31 17:02:40 +0900306static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
307static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
Tejun Heo7f4774b2009-06-10 16:29:07 +0900309static int nv_hardreset(struct ata_link *link, unsigned int *class,
310 unsigned long deadline);
Tejun Heo39f87582006-06-17 15:49:56 +0900311static void nv_nf2_freeze(struct ata_port *ap);
312static void nv_nf2_thaw(struct ata_port *ap);
313static void nv_ck804_freeze(struct ata_port *ap);
314static void nv_ck804_thaw(struct ata_port *ap);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700315static int nv_adma_slave_config(struct scsi_device *sdev);
Robert Hancock2dec7552006-11-26 14:20:19 -0600316static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700317static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
318static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc);
319static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance);
320static void nv_adma_irq_clear(struct ata_port *ap);
321static int nv_adma_port_start(struct ata_port *ap);
322static void nv_adma_port_stop(struct ata_port *ap);
Tejun Heo438ac6d2007-03-02 17:31:26 +0900323#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600324static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg);
325static int nv_adma_port_resume(struct ata_port *ap);
Tejun Heo438ac6d2007-03-02 17:31:26 +0900326#endif
Robert Hancock53014e22007-05-05 15:36:36 -0600327static void nv_adma_freeze(struct ata_port *ap);
328static void nv_adma_thaw(struct ata_port *ap);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700329static void nv_adma_error_handler(struct ata_port *ap);
330static void nv_adma_host_stop(struct ata_host *host);
Robert Hancockf5ecac22007-02-20 21:49:10 -0600331static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc);
Robert Hancockf2fb3442007-03-26 21:43:36 -0800332static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
Tejun Heo39f87582006-06-17 15:49:56 +0900333
Kuan Luof140f0f2007-10-15 15:16:53 -0400334static void nv_mcp55_thaw(struct ata_port *ap);
335static void nv_mcp55_freeze(struct ata_port *ap);
336static void nv_swncq_error_handler(struct ata_port *ap);
337static int nv_swncq_slave_config(struct scsi_device *sdev);
338static int nv_swncq_port_start(struct ata_port *ap);
339static void nv_swncq_qc_prep(struct ata_queued_cmd *qc);
340static void nv_swncq_fill_sg(struct ata_queued_cmd *qc);
341static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc);
342static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis);
343static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance);
344#ifdef CONFIG_PM
345static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg);
346static int nv_swncq_port_resume(struct ata_port *ap);
347#endif
348
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349enum nv_host_type
350{
351 GENERIC,
352 NFORCE2,
Tejun Heo27e4b272006-06-17 15:49:55 +0900353 NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */
Robert Hancockfbbb2622006-10-27 19:08:41 -0700354 CK804,
Kuan Luof140f0f2007-10-15 15:16:53 -0400355 ADMA,
Tejun Heo2d775702009-01-25 11:29:38 +0900356 MCP5x,
Kuan Luof140f0f2007-10-15 15:16:53 -0400357 SWNCQ,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358};
359
Jeff Garzik3b7d6972005-11-10 11:04:11 -0500360static const struct pci_device_id nv_pci_tbl[] = {
Jeff Garzik54bb3a92006-09-27 22:20:11 -0400361 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 },
362 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 },
363 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 },
364 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 },
365 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 },
366 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 },
367 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 },
Tejun Heo2d775702009-01-25 11:29:38 +0900368 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), MCP5x },
369 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), MCP5x },
370 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), MCP5x },
371 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), MCP5x },
Kuan Luoe2e031e2007-10-25 02:14:17 -0400372 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC },
373 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC },
374 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC },
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400375
376 { } /* terminate list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377};
378
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379static struct pci_driver nv_pci_driver = {
380 .name = DRV_NAME,
381 .id_table = nv_pci_tbl,
382 .probe = nv_init_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900383#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600384 .suspend = ata_pci_device_suspend,
385 .resume = nv_pci_device_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900386#endif
Tejun Heo1daf9ce2007-05-17 13:13:57 +0200387 .remove = ata_pci_remove_one,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388};
389
Jeff Garzik193515d2005-11-07 00:59:37 -0500390static struct scsi_host_template nv_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900391 ATA_BMDMA_SHT(DRV_NAME),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392};
393
Robert Hancockfbbb2622006-10-27 19:08:41 -0700394static struct scsi_host_template nv_adma_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900395 ATA_NCQ_SHT(DRV_NAME),
Robert Hancockfbbb2622006-10-27 19:08:41 -0700396 .can_queue = NV_ADMA_MAX_CPBS,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700397 .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700398 .dma_boundary = NV_ADMA_DMA_BOUNDARY,
399 .slave_configure = nv_adma_slave_config,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700400};
401
Kuan Luof140f0f2007-10-15 15:16:53 -0400402static struct scsi_host_template nv_swncq_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900403 ATA_NCQ_SHT(DRV_NAME),
Kuan Luof140f0f2007-10-15 15:16:53 -0400404 .can_queue = ATA_MAX_QUEUE,
Kuan Luof140f0f2007-10-15 15:16:53 -0400405 .sg_tablesize = LIBATA_MAX_PRD,
Kuan Luof140f0f2007-10-15 15:16:53 -0400406 .dma_boundary = ATA_DMA_BOUNDARY,
407 .slave_configure = nv_swncq_slave_config,
Kuan Luof140f0f2007-10-15 15:16:53 -0400408};
409
Tejun Heo7f4774b2009-06-10 16:29:07 +0900410/*
411 * NV SATA controllers have various different problems with hardreset
412 * protocol depending on the specific controller and device.
413 *
414 * GENERIC:
415 *
416 * bko11195 reports that link doesn't come online after hardreset on
417 * generic nv's and there have been several other similar reports on
418 * linux-ide.
419 *
420 * bko12351#c23 reports that warmplug on MCP61 doesn't work with
421 * softreset.
422 *
423 * NF2/3:
424 *
425 * bko3352 reports nf2/3 controllers can't determine device signature
426 * reliably after hardreset. The following thread reports detection
427 * failure on cold boot with the standard debouncing timing.
428 *
429 * http://thread.gmane.org/gmane.linux.ide/34098
430 *
431 * bko12176 reports that hardreset fails to bring up the link during
432 * boot on nf2.
433 *
434 * CK804:
435 *
436 * For initial probing after boot and hot plugging, hardreset mostly
437 * works fine on CK804 but curiously, reprobing on the initial port
438 * by rescanning or rmmod/insmod fails to acquire the initial D2H Reg
439 * FIS in somewhat undeterministic way.
440 *
441 * SWNCQ:
442 *
443 * bko12351 reports that when SWNCQ is enabled, for hotplug to work,
444 * hardreset should be used and hardreset can't report proper
445 * signature, which suggests that mcp5x is closer to nf2 as long as
446 * reset quirkiness is concerned.
447 *
448 * bko12703 reports that boot probing fails for intel SSD with
449 * hardreset. Link fails to come online. Softreset works fine.
450 *
451 * The failures are varied but the following patterns seem true for
452 * all flavors.
453 *
454 * - Softreset during boot always works.
455 *
456 * - Hardreset during boot sometimes fails to bring up the link on
457 * certain comibnations and device signature acquisition is
458 * unreliable.
459 *
460 * - Hardreset is often necessary after hotplug.
461 *
462 * So, preferring softreset for boot probing and error handling (as
463 * hardreset might bring down the link) but using hardreset for
464 * post-boot probing should work around the above issues in most
465 * cases. Define nv_hardreset() which only kicks in for post-boot
466 * probing and use it for all variants.
467 */
468static struct ata_port_operations nv_generic_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900469 .inherits = &ata_bmdma_port_ops,
Alan Coxc96f1732009-03-24 10:23:46 +0000470 .lost_interrupt = ATA_OP_NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 .scr_read = nv_scr_read,
472 .scr_write = nv_scr_write,
Tejun Heo7f4774b2009-06-10 16:29:07 +0900473 .hardreset = nv_hardreset,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474};
475
Tejun Heo029cfd62008-03-25 12:22:49 +0900476static struct ata_port_operations nv_nf2_ops = {
Tejun Heo7dac7452009-02-12 10:34:32 +0900477 .inherits = &nv_generic_ops,
Tejun Heo39f87582006-06-17 15:49:56 +0900478 .freeze = nv_nf2_freeze,
479 .thaw = nv_nf2_thaw,
Tejun Heoada364e2006-06-17 15:49:56 +0900480};
481
Tejun Heo029cfd62008-03-25 12:22:49 +0900482static struct ata_port_operations nv_ck804_ops = {
Tejun Heo7f4774b2009-06-10 16:29:07 +0900483 .inherits = &nv_generic_ops,
Tejun Heo39f87582006-06-17 15:49:56 +0900484 .freeze = nv_ck804_freeze,
485 .thaw = nv_ck804_thaw,
Tejun Heoada364e2006-06-17 15:49:56 +0900486 .host_stop = nv_ck804_host_stop,
487};
488
Tejun Heo029cfd62008-03-25 12:22:49 +0900489static struct ata_port_operations nv_adma_ops = {
Tejun Heo3c324282008-11-03 12:37:49 +0900490 .inherits = &nv_ck804_ops,
Tejun Heo029cfd62008-03-25 12:22:49 +0900491
Robert Hancock2dec7552006-11-26 14:20:19 -0600492 .check_atapi_dma = nv_adma_check_atapi_dma,
Tejun Heo5682ed32008-04-07 22:47:16 +0900493 .sff_tf_read = nv_adma_tf_read,
Tejun Heo31cc23b2007-09-23 13:14:12 +0900494 .qc_defer = ata_std_qc_defer,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700495 .qc_prep = nv_adma_qc_prep,
496 .qc_issue = nv_adma_qc_issue,
Tejun Heo5682ed32008-04-07 22:47:16 +0900497 .sff_irq_clear = nv_adma_irq_clear,
Tejun Heo029cfd62008-03-25 12:22:49 +0900498
Robert Hancock53014e22007-05-05 15:36:36 -0600499 .freeze = nv_adma_freeze,
500 .thaw = nv_adma_thaw,
Robert Hancockfbbb2622006-10-27 19:08:41 -0700501 .error_handler = nv_adma_error_handler,
Robert Hancockf5ecac22007-02-20 21:49:10 -0600502 .post_internal_cmd = nv_adma_post_internal_cmd,
Tejun Heo029cfd62008-03-25 12:22:49 +0900503
Robert Hancockfbbb2622006-10-27 19:08:41 -0700504 .port_start = nv_adma_port_start,
505 .port_stop = nv_adma_port_stop,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900506#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600507 .port_suspend = nv_adma_port_suspend,
508 .port_resume = nv_adma_port_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900509#endif
Robert Hancockfbbb2622006-10-27 19:08:41 -0700510 .host_stop = nv_adma_host_stop,
511};
512
Tejun Heo029cfd62008-03-25 12:22:49 +0900513static struct ata_port_operations nv_swncq_ops = {
Tejun Heo7f4774b2009-06-10 16:29:07 +0900514 .inherits = &nv_generic_ops,
Tejun Heo029cfd62008-03-25 12:22:49 +0900515
Kuan Luof140f0f2007-10-15 15:16:53 -0400516 .qc_defer = ata_std_qc_defer,
517 .qc_prep = nv_swncq_qc_prep,
518 .qc_issue = nv_swncq_qc_issue,
Tejun Heo029cfd62008-03-25 12:22:49 +0900519
Kuan Luof140f0f2007-10-15 15:16:53 -0400520 .freeze = nv_mcp55_freeze,
521 .thaw = nv_mcp55_thaw,
522 .error_handler = nv_swncq_error_handler,
Tejun Heo029cfd62008-03-25 12:22:49 +0900523
Kuan Luof140f0f2007-10-15 15:16:53 -0400524#ifdef CONFIG_PM
525 .port_suspend = nv_swncq_port_suspend,
526 .port_resume = nv_swncq_port_resume,
527#endif
528 .port_start = nv_swncq_port_start,
529};
530
Tejun Heo95947192008-03-25 12:22:49 +0900531struct nv_pi_priv {
532 irq_handler_t irq_handler;
533 struct scsi_host_template *sht;
534};
535
536#define NV_PI_PRIV(_irq_handler, _sht) \
537 &(struct nv_pi_priv){ .irq_handler = _irq_handler, .sht = _sht }
538
Tejun Heo1626aeb2007-05-04 12:43:58 +0200539static const struct ata_port_info nv_port_info[] = {
Tejun Heoada364e2006-06-17 15:49:56 +0900540 /* generic */
541 {
Tejun Heo0c887582007-08-06 18:36:23 +0900542 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
Tejun Heoada364e2006-06-17 15:49:56 +0900543 .pio_mask = NV_PIO_MASK,
544 .mwdma_mask = NV_MWDMA_MASK,
545 .udma_mask = NV_UDMA_MASK,
546 .port_ops = &nv_generic_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900547 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
Tejun Heoada364e2006-06-17 15:49:56 +0900548 },
549 /* nforce2/3 */
550 {
Tejun Heo0c887582007-08-06 18:36:23 +0900551 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
Tejun Heoada364e2006-06-17 15:49:56 +0900552 .pio_mask = NV_PIO_MASK,
553 .mwdma_mask = NV_MWDMA_MASK,
554 .udma_mask = NV_UDMA_MASK,
555 .port_ops = &nv_nf2_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900556 .private_data = NV_PI_PRIV(nv_nf2_interrupt, &nv_sht),
Tejun Heoada364e2006-06-17 15:49:56 +0900557 },
558 /* ck804 */
559 {
Tejun Heo0c887582007-08-06 18:36:23 +0900560 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
Tejun Heoada364e2006-06-17 15:49:56 +0900561 .pio_mask = NV_PIO_MASK,
562 .mwdma_mask = NV_MWDMA_MASK,
563 .udma_mask = NV_UDMA_MASK,
564 .port_ops = &nv_ck804_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900565 .private_data = NV_PI_PRIV(nv_ck804_interrupt, &nv_sht),
Tejun Heoada364e2006-06-17 15:49:56 +0900566 },
Robert Hancockfbbb2622006-10-27 19:08:41 -0700567 /* ADMA */
568 {
Robert Hancockfbbb2622006-10-27 19:08:41 -0700569 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
570 ATA_FLAG_MMIO | ATA_FLAG_NCQ,
571 .pio_mask = NV_PIO_MASK,
572 .mwdma_mask = NV_MWDMA_MASK,
573 .udma_mask = NV_UDMA_MASK,
574 .port_ops = &nv_adma_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900575 .private_data = NV_PI_PRIV(nv_adma_interrupt, &nv_adma_sht),
Robert Hancockfbbb2622006-10-27 19:08:41 -0700576 },
Tejun Heo2d775702009-01-25 11:29:38 +0900577 /* MCP5x */
578 {
579 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
580 .pio_mask = NV_PIO_MASK,
581 .mwdma_mask = NV_MWDMA_MASK,
582 .udma_mask = NV_UDMA_MASK,
Tejun Heo7f4774b2009-06-10 16:29:07 +0900583 .port_ops = &nv_generic_ops,
Tejun Heo2d775702009-01-25 11:29:38 +0900584 .private_data = NV_PI_PRIV(nv_generic_interrupt, &nv_sht),
585 },
Kuan Luof140f0f2007-10-15 15:16:53 -0400586 /* SWNCQ */
587 {
Kuan Luof140f0f2007-10-15 15:16:53 -0400588 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
589 ATA_FLAG_NCQ,
Kuan Luof140f0f2007-10-15 15:16:53 -0400590 .pio_mask = NV_PIO_MASK,
591 .mwdma_mask = NV_MWDMA_MASK,
592 .udma_mask = NV_UDMA_MASK,
593 .port_ops = &nv_swncq_ops,
Tejun Heo95947192008-03-25 12:22:49 +0900594 .private_data = NV_PI_PRIV(nv_swncq_interrupt, &nv_swncq_sht),
Kuan Luof140f0f2007-10-15 15:16:53 -0400595 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596};
597
598MODULE_AUTHOR("NVIDIA");
599MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller");
600MODULE_LICENSE("GPL");
601MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
602MODULE_VERSION(DRV_VERSION);
603
Jeff Garzik06993d22008-04-04 03:34:45 -0400604static int adma_enabled;
Zoltan Boszormenyid21279f2008-03-28 14:33:46 -0700605static int swncq_enabled = 1;
Tony Vroon51c89492009-08-06 00:50:09 +0100606static int msi_enabled;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700607
Robert Hancock2dec7552006-11-26 14:20:19 -0600608static void nv_adma_register_mode(struct ata_port *ap)
609{
Robert Hancock2dec7552006-11-26 14:20:19 -0600610 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600611 void __iomem *mmio = pp->ctl_block;
Robert Hancocka2cfe812007-02-05 16:26:03 -0800612 u16 tmp, status;
613 int count = 0;
Robert Hancock2dec7552006-11-26 14:20:19 -0600614
615 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
616 return;
617
Robert Hancocka2cfe812007-02-05 16:26:03 -0800618 status = readw(mmio + NV_ADMA_STAT);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400619 while (!(status & NV_ADMA_STAT_IDLE) && count < 20) {
Robert Hancocka2cfe812007-02-05 16:26:03 -0800620 ndelay(50);
621 status = readw(mmio + NV_ADMA_STAT);
622 count++;
623 }
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400624 if (count == 20)
Robert Hancocka2cfe812007-02-05 16:26:03 -0800625 ata_port_printk(ap, KERN_WARNING,
626 "timeout waiting for ADMA IDLE, stat=0x%hx\n",
627 status);
628
Robert Hancock2dec7552006-11-26 14:20:19 -0600629 tmp = readw(mmio + NV_ADMA_CTL);
630 writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
631
Robert Hancocka2cfe812007-02-05 16:26:03 -0800632 count = 0;
633 status = readw(mmio + NV_ADMA_STAT);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400634 while (!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
Robert Hancocka2cfe812007-02-05 16:26:03 -0800635 ndelay(50);
636 status = readw(mmio + NV_ADMA_STAT);
637 count++;
638 }
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400639 if (count == 20)
Robert Hancocka2cfe812007-02-05 16:26:03 -0800640 ata_port_printk(ap, KERN_WARNING,
641 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
642 status);
643
Robert Hancock2dec7552006-11-26 14:20:19 -0600644 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
645}
646
647static void nv_adma_mode(struct ata_port *ap)
648{
Robert Hancock2dec7552006-11-26 14:20:19 -0600649 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -0600650 void __iomem *mmio = pp->ctl_block;
Robert Hancocka2cfe812007-02-05 16:26:03 -0800651 u16 tmp, status;
652 int count = 0;
Robert Hancock2dec7552006-11-26 14:20:19 -0600653
654 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
655 return;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500656
Robert Hancock2dec7552006-11-26 14:20:19 -0600657 WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
658
659 tmp = readw(mmio + NV_ADMA_CTL);
660 writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
661
Robert Hancocka2cfe812007-02-05 16:26:03 -0800662 status = readw(mmio + NV_ADMA_STAT);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400663 while (((status & NV_ADMA_STAT_LEGACY) ||
Robert Hancocka2cfe812007-02-05 16:26:03 -0800664 !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
665 ndelay(50);
666 status = readw(mmio + NV_ADMA_STAT);
667 count++;
668 }
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400669 if (count == 20)
Robert Hancocka2cfe812007-02-05 16:26:03 -0800670 ata_port_printk(ap, KERN_WARNING,
671 "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
672 status);
673
Robert Hancock2dec7552006-11-26 14:20:19 -0600674 pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
675}
676
Robert Hancockfbbb2622006-10-27 19:08:41 -0700677static int nv_adma_slave_config(struct scsi_device *sdev)
678{
679 struct ata_port *ap = ata_shost_to_port(sdev->host);
Robert Hancock2dec7552006-11-26 14:20:19 -0600680 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancock8959d302008-02-04 19:39:02 -0600681 struct nv_adma_port_priv *port0, *port1;
682 struct scsi_device *sdev0, *sdev1;
Robert Hancock2dec7552006-11-26 14:20:19 -0600683 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
Robert Hancock8959d302008-02-04 19:39:02 -0600684 unsigned long segment_boundary, flags;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700685 unsigned short sg_tablesize;
686 int rc;
Robert Hancock2dec7552006-11-26 14:20:19 -0600687 int adma_enable;
688 u32 current_reg, new_reg, config_mask;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700689
690 rc = ata_scsi_slave_config(sdev);
691
692 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
693 /* Not a proper libata device, ignore */
694 return rc;
695
Robert Hancock8959d302008-02-04 19:39:02 -0600696 spin_lock_irqsave(ap->lock, flags);
697
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900698 if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) {
Robert Hancockfbbb2622006-10-27 19:08:41 -0700699 /*
700 * NVIDIA reports that ADMA mode does not support ATAPI commands.
701 * Therefore ATAPI commands are sent through the legacy interface.
702 * However, the legacy interface only supports 32-bit DMA.
703 * Restrict DMA parameters as required by the legacy interface
704 * when an ATAPI device is connected.
705 */
Robert Hancockfbbb2622006-10-27 19:08:41 -0700706 segment_boundary = ATA_DMA_BOUNDARY;
707 /* Subtract 1 since an extra entry may be needed for padding, see
708 libata-scsi.c */
709 sg_tablesize = LIBATA_MAX_PRD - 1;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500710
Robert Hancock2dec7552006-11-26 14:20:19 -0600711 /* Since the legacy DMA engine is in use, we need to disable ADMA
712 on the port. */
713 adma_enable = 0;
714 nv_adma_register_mode(ap);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400715 } else {
Robert Hancockfbbb2622006-10-27 19:08:41 -0700716 segment_boundary = NV_ADMA_DMA_BOUNDARY;
717 sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN;
Robert Hancock2dec7552006-11-26 14:20:19 -0600718 adma_enable = 1;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700719 }
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500720
Robert Hancock2dec7552006-11-26 14:20:19 -0600721 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &current_reg);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700722
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400723 if (ap->port_no == 1)
Robert Hancock2dec7552006-11-26 14:20:19 -0600724 config_mask = NV_MCP_SATA_CFG_20_PORT1_EN |
725 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
726 else
727 config_mask = NV_MCP_SATA_CFG_20_PORT0_EN |
728 NV_MCP_SATA_CFG_20_PORT0_PWB_EN;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500729
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400730 if (adma_enable) {
Robert Hancock2dec7552006-11-26 14:20:19 -0600731 new_reg = current_reg | config_mask;
732 pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE;
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400733 } else {
Robert Hancock2dec7552006-11-26 14:20:19 -0600734 new_reg = current_reg & ~config_mask;
735 pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE;
736 }
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500737
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400738 if (current_reg != new_reg)
Robert Hancock2dec7552006-11-26 14:20:19 -0600739 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg);
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500740
Robert Hancock8959d302008-02-04 19:39:02 -0600741 port0 = ap->host->ports[0]->private_data;
742 port1 = ap->host->ports[1]->private_data;
743 sdev0 = ap->host->ports[0]->link.device[0].sdev;
744 sdev1 = ap->host->ports[1]->link.device[0].sdev;
745 if ((port0->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
746 (port1->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)) {
747 /** We have to set the DMA mask to 32-bit if either port is in
748 ATAPI mode, since they are on the same PCI device which is
749 used for DMA mapping. If we set the mask we also need to set
750 the bounce limit on both ports to ensure that the block
751 layer doesn't feed addresses that cause DMA mapping to
752 choke. If either SCSI device is not allocated yet, it's OK
753 since that port will discover its correct setting when it
754 does get allocated.
755 Note: Setting 32-bit mask should not fail. */
756 if (sdev0)
757 blk_queue_bounce_limit(sdev0->request_queue,
758 ATA_DMA_MASK);
759 if (sdev1)
760 blk_queue_bounce_limit(sdev1->request_queue,
761 ATA_DMA_MASK);
762
763 pci_set_dma_mask(pdev, ATA_DMA_MASK);
764 } else {
765 /** This shouldn't fail as it was set to this value before */
766 pci_set_dma_mask(pdev, pp->adma_dma_mask);
767 if (sdev0)
768 blk_queue_bounce_limit(sdev0->request_queue,
769 pp->adma_dma_mask);
770 if (sdev1)
771 blk_queue_bounce_limit(sdev1->request_queue,
772 pp->adma_dma_mask);
773 }
774
Robert Hancockfbbb2622006-10-27 19:08:41 -0700775 blk_queue_segment_boundary(sdev->request_queue, segment_boundary);
Martin K. Petersen8a783622010-02-26 00:20:39 -0500776 blk_queue_max_segments(sdev->request_queue, sg_tablesize);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700777 ata_port_printk(ap, KERN_INFO,
Robert Hancock8959d302008-02-04 19:39:02 -0600778 "DMA mask 0x%llX, segment boundary 0x%lX, hw segs %hu\n",
779 (unsigned long long)*ap->host->dev->dma_mask,
780 segment_boundary, sg_tablesize);
781
782 spin_unlock_irqrestore(ap->lock, flags);
783
Robert Hancockfbbb2622006-10-27 19:08:41 -0700784 return rc;
785}
786
Robert Hancock2dec7552006-11-26 14:20:19 -0600787static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc)
788{
789 struct nv_adma_port_priv *pp = qc->ap->private_data;
790 return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE);
791}
792
Robert Hancockf2fb3442007-03-26 21:43:36 -0800793static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
794{
Robert Hancock3f3debd2007-11-25 16:59:36 -0600795 /* Other than when internal or pass-through commands are executed,
796 the only time this function will be called in ADMA mode will be
797 if a command fails. In the failure case we don't care about going
798 into register mode with ADMA commands pending, as the commands will
799 all shortly be aborted anyway. We assume that NCQ commands are not
800 issued via passthrough, which is the only way that switching into
801 ADMA mode could abort outstanding commands. */
Robert Hancockf2fb3442007-03-26 21:43:36 -0800802 nv_adma_register_mode(ap);
803
Tejun Heo9363c382008-04-07 22:47:16 +0900804 ata_sff_tf_read(ap, tf);
Robert Hancockf2fb3442007-03-26 21:43:36 -0800805}
806
Robert Hancock2dec7552006-11-26 14:20:19 -0600807static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb)
Robert Hancockfbbb2622006-10-27 19:08:41 -0700808{
809 unsigned int idx = 0;
810
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400811 if (tf->flags & ATA_TFLAG_ISADDR) {
Robert Hancockac3d6b82007-02-19 19:02:46 -0600812 if (tf->flags & ATA_TFLAG_LBA48) {
813 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB);
814 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect);
815 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal);
816 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam);
817 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah);
818 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature);
819 } else
820 cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB);
Jeff Garzika84471f2007-02-26 05:51:33 -0500821
Robert Hancockac3d6b82007-02-19 19:02:46 -0600822 cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect);
823 cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal);
824 cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam);
825 cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700826 }
Jeff Garzika84471f2007-02-26 05:51:33 -0500827
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400828 if (tf->flags & ATA_TFLAG_DEVICE)
Robert Hancockac3d6b82007-02-19 19:02:46 -0600829 cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700830
831 cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND);
Jeff Garzika84471f2007-02-26 05:51:33 -0500832
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400833 while (idx < 12)
Robert Hancockac3d6b82007-02-19 19:02:46 -0600834 cpb[idx++] = cpu_to_le16(IGN);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700835
836 return idx;
837}
838
Robert Hancock5bd28a42007-02-05 16:26:01 -0800839static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
Robert Hancockfbbb2622006-10-27 19:08:41 -0700840{
841 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancock2dec7552006-11-26 14:20:19 -0600842 u8 flags = pp->cpb[cpb_num].resp_flags;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700843
844 VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags);
845
Robert Hancock5bd28a42007-02-05 16:26:01 -0800846 if (unlikely((force_err ||
847 flags & (NV_CPB_RESP_ATA_ERR |
848 NV_CPB_RESP_CMD_ERR |
849 NV_CPB_RESP_CPB_ERR)))) {
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900850 struct ata_eh_info *ehi = &ap->link.eh_info;
Robert Hancock5bd28a42007-02-05 16:26:01 -0800851 int freeze = 0;
852
853 ata_ehi_clear_desc(ehi);
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400854 __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags);
Robert Hancock5bd28a42007-02-05 16:26:01 -0800855 if (flags & NV_CPB_RESP_ATA_ERR) {
Tejun Heob64bbc32007-07-16 14:29:39 +0900856 ata_ehi_push_desc(ehi, "ATA error");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800857 ehi->err_mask |= AC_ERR_DEV;
858 } else if (flags & NV_CPB_RESP_CMD_ERR) {
Tejun Heob64bbc32007-07-16 14:29:39 +0900859 ata_ehi_push_desc(ehi, "CMD error");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800860 ehi->err_mask |= AC_ERR_DEV;
861 } else if (flags & NV_CPB_RESP_CPB_ERR) {
Tejun Heob64bbc32007-07-16 14:29:39 +0900862 ata_ehi_push_desc(ehi, "CPB error");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800863 ehi->err_mask |= AC_ERR_SYSTEM;
864 freeze = 1;
865 } else {
866 /* notifier error, but no error in CPB flags? */
Tejun Heob64bbc32007-07-16 14:29:39 +0900867 ata_ehi_push_desc(ehi, "unknown");
Robert Hancock5bd28a42007-02-05 16:26:01 -0800868 ehi->err_mask |= AC_ERR_OTHER;
869 freeze = 1;
870 }
871 /* Kill all commands. EH will determine what actually failed. */
872 if (freeze)
873 ata_port_freeze(ap);
874 else
875 ata_port_abort(ap);
876 return 1;
877 }
878
Robert Hancockf2fb3442007-03-26 21:43:36 -0800879 if (likely(flags & NV_CPB_RESP_DONE)) {
Robert Hancockfbbb2622006-10-27 19:08:41 -0700880 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num);
Robert Hancock5bd28a42007-02-05 16:26:01 -0800881 VPRINTK("CPB flags done, flags=0x%x\n", flags);
882 if (likely(qc)) {
Jeff Garzik2dcb4072007-10-19 06:42:56 -0400883 DPRINTK("Completing qc from tag %d\n", cpb_num);
Robert Hancockfbbb2622006-10-27 19:08:41 -0700884 ata_qc_complete(qc);
Robert Hancock2a54cf72007-02-21 23:53:03 -0600885 } else {
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900886 struct ata_eh_info *ehi = &ap->link.eh_info;
Robert Hancock2a54cf72007-02-21 23:53:03 -0600887 /* Notifier bits set without a command may indicate the drive
888 is misbehaving. Raise host state machine violation on this
889 condition. */
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400890 ata_port_printk(ap, KERN_ERR,
891 "notifier for tag %d with no cmd?\n",
892 cpb_num);
Robert Hancock2a54cf72007-02-21 23:53:03 -0600893 ehi->err_mask |= AC_ERR_HSM;
Tejun Heocf480622008-01-24 00:05:14 +0900894 ehi->action |= ATA_EH_RESET;
Robert Hancock2a54cf72007-02-21 23:53:03 -0600895 ata_port_freeze(ap);
896 return 1;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700897 }
898 }
Robert Hancock5bd28a42007-02-05 16:26:01 -0800899 return 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700900}
901
Robert Hancock2dec7552006-11-26 14:20:19 -0600902static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
903{
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900904 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
Robert Hancock2dec7552006-11-26 14:20:19 -0600905
906 /* freeze if hotplugged */
907 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
908 ata_port_freeze(ap);
909 return 1;
910 }
911
912 /* bail out if not our interrupt */
913 if (!(irq_stat & NV_INT_DEV))
914 return 0;
915
916 /* DEV interrupt w/ no active qc? */
917 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
Tejun Heo9363c382008-04-07 22:47:16 +0900918 ata_sff_check_status(ap);
Robert Hancock2dec7552006-11-26 14:20:19 -0600919 return 1;
920 }
921
922 /* handle interrupt */
Tejun Heoc3b28892010-05-19 22:10:21 +0200923 return ata_bmdma_port_intr(ap, qc);
Robert Hancock2dec7552006-11-26 14:20:19 -0600924}
925
Robert Hancockfbbb2622006-10-27 19:08:41 -0700926static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
927{
928 struct ata_host *host = dev_instance;
929 int i, handled = 0;
Robert Hancock2dec7552006-11-26 14:20:19 -0600930 u32 notifier_clears[2];
Robert Hancockfbbb2622006-10-27 19:08:41 -0700931
932 spin_lock(&host->lock);
933
934 for (i = 0; i < host->n_ports; i++) {
935 struct ata_port *ap = host->ports[i];
Tejun Heo3e4ec342010-05-10 21:41:30 +0200936 struct nv_adma_port_priv *pp = ap->private_data;
937 void __iomem *mmio = pp->ctl_block;
938 u16 status;
939 u32 gen_ctl;
940 u32 notifier, notifier_error;
941
Robert Hancock2dec7552006-11-26 14:20:19 -0600942 notifier_clears[i] = 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -0700943
Tejun Heo3e4ec342010-05-10 21:41:30 +0200944 /* 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 }
Jeff Garzika617c092007-05-21 20:14:23 -0400951
Tejun Heo3e4ec342010-05-10 21:41:30 +0200952 /* if in ATA register mode, check for standard interrupts */
953 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
954 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
955 >> (NV_INT_PORT_SHIFT * i);
956 if (ata_tag_valid(ap->link.active_tag))
957 /** NV_INT_DEV indication seems unreliable
958 at times at least in ADMA mode. Force it
959 on always when a command is active, to
960 prevent losing interrupts. */
961 irq_stat |= NV_INT_DEV;
962 handled += nv_host_intr(ap, irq_stat);
963 }
Robert Hancockfbbb2622006-10-27 19:08:41 -0700964
Tejun Heo3e4ec342010-05-10 21:41:30 +0200965 notifier = readl(mmio + NV_ADMA_NOTIFIER);
966 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
967 notifier_clears[i] = notifier | notifier_error;
968
969 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
970
971 if (!NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier &&
972 !notifier_error)
973 /* Nothing to do */
974 continue;
975
976 status = readw(mmio + NV_ADMA_STAT);
977
978 /*
979 * Clear status. Ensure the controller sees the
980 * clearing before we start looking at any of the CPB
981 * statuses, so that any CPB completions after this
982 * point in the handler will raise another interrupt.
983 */
984 writew(status, mmio + NV_ADMA_STAT);
985 readw(mmio + NV_ADMA_STAT); /* flush posted write */
986 rmb();
987
988 handled++; /* irq handled if we got here */
989
990 /* freeze if hotplugged or controller error */
991 if (unlikely(status & (NV_ADMA_STAT_HOTPLUG |
992 NV_ADMA_STAT_HOTUNPLUG |
993 NV_ADMA_STAT_TIMEOUT |
994 NV_ADMA_STAT_SERROR))) {
995 struct ata_eh_info *ehi = &ap->link.eh_info;
996
997 ata_ehi_clear_desc(ehi);
998 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status);
999 if (status & NV_ADMA_STAT_TIMEOUT) {
1000 ehi->err_mask |= AC_ERR_SYSTEM;
1001 ata_ehi_push_desc(ehi, "timeout");
1002 } else if (status & NV_ADMA_STAT_HOTPLUG) {
1003 ata_ehi_hotplugged(ehi);
1004 ata_ehi_push_desc(ehi, "hotplug");
1005 } else if (status & NV_ADMA_STAT_HOTUNPLUG) {
1006 ata_ehi_hotplugged(ehi);
1007 ata_ehi_push_desc(ehi, "hot unplug");
1008 } else if (status & NV_ADMA_STAT_SERROR) {
1009 /* let EH analyze SError and figure out cause */
1010 ata_ehi_push_desc(ehi, "SError");
1011 } else
1012 ata_ehi_push_desc(ehi, "unknown");
1013 ata_port_freeze(ap);
1014 continue;
1015 }
1016
1017 if (status & (NV_ADMA_STAT_DONE |
1018 NV_ADMA_STAT_CPBERR |
1019 NV_ADMA_STAT_CMD_COMPLETE)) {
1020 u32 check_commands = notifier_clears[i];
1021 int pos, error = 0;
1022
1023 if (status & NV_ADMA_STAT_CPBERR) {
1024 /* check all active commands */
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001025 if (ata_tag_valid(ap->link.active_tag))
Tejun Heo3e4ec342010-05-10 21:41:30 +02001026 check_commands = 1 <<
1027 ap->link.active_tag;
1028 else
1029 check_commands = ap->link.sactive;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001030 }
1031
Tejun Heo3e4ec342010-05-10 21:41:30 +02001032 /* check CPBs for completed commands */
1033 while ((pos = ffs(check_commands)) && !error) {
1034 pos--;
1035 error = nv_adma_check_cpb(ap, pos,
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001036 notifier_error & (1 << pos));
Tejun Heo3e4ec342010-05-10 21:41:30 +02001037 check_commands &= ~(1 << pos);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001038 }
Robert Hancockfbbb2622006-10-27 19:08:41 -07001039 }
1040 }
Jeff Garzikf20b16f2006-12-11 11:14:06 -05001041
Jeff Garzikb4479162007-10-25 20:47:30 -04001042 if (notifier_clears[0] || notifier_clears[1]) {
Robert Hancock2dec7552006-11-26 14:20:19 -06001043 /* Note: Both notifier clear registers must be written
1044 if either is set, even if one is zero, according to NVIDIA. */
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001045 struct nv_adma_port_priv *pp = host->ports[0]->private_data;
1046 writel(notifier_clears[0], pp->notifier_clear_block);
1047 pp = host->ports[1]->private_data;
1048 writel(notifier_clears[1], pp->notifier_clear_block);
Robert Hancock2dec7552006-11-26 14:20:19 -06001049 }
Robert Hancockfbbb2622006-10-27 19:08:41 -07001050
1051 spin_unlock(&host->lock);
1052
1053 return IRQ_RETVAL(handled);
1054}
1055
Robert Hancock53014e22007-05-05 15:36:36 -06001056static void nv_adma_freeze(struct ata_port *ap)
1057{
1058 struct nv_adma_port_priv *pp = ap->private_data;
1059 void __iomem *mmio = pp->ctl_block;
1060 u16 tmp;
1061
1062 nv_ck804_freeze(ap);
1063
1064 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1065 return;
1066
1067 /* clear any outstanding CK804 notifications */
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001068 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
Robert Hancock53014e22007-05-05 15:36:36 -06001069 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
1070
1071 /* Disable interrupt */
1072 tmp = readw(mmio + NV_ADMA_CTL);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001073 writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
Robert Hancock53014e22007-05-05 15:36:36 -06001074 mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001075 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancock53014e22007-05-05 15:36:36 -06001076}
1077
1078static void nv_adma_thaw(struct ata_port *ap)
1079{
1080 struct nv_adma_port_priv *pp = ap->private_data;
1081 void __iomem *mmio = pp->ctl_block;
1082 u16 tmp;
1083
1084 nv_ck804_thaw(ap);
1085
1086 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
1087 return;
1088
1089 /* Enable interrupt */
1090 tmp = readw(mmio + NV_ADMA_CTL);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001091 writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
Robert Hancock53014e22007-05-05 15:36:36 -06001092 mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001093 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancock53014e22007-05-05 15:36:36 -06001094}
1095
Robert Hancockfbbb2622006-10-27 19:08:41 -07001096static void nv_adma_irq_clear(struct ata_port *ap)
1097{
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001098 struct nv_adma_port_priv *pp = ap->private_data;
1099 void __iomem *mmio = pp->ctl_block;
Robert Hancock53014e22007-05-05 15:36:36 -06001100 u32 notifier_clears[2];
1101
1102 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
Tejun Heo37f65b82010-05-19 22:10:20 +02001103 ata_bmdma_irq_clear(ap);
Robert Hancock53014e22007-05-05 15:36:36 -06001104 return;
1105 }
1106
1107 /* clear any outstanding CK804 notifications */
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001108 writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT),
Robert Hancock53014e22007-05-05 15:36:36 -06001109 ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001110
1111 /* clear ADMA status */
Robert Hancock53014e22007-05-05 15:36:36 -06001112 writew(0xffff, mmio + NV_ADMA_STAT);
Jeff Garzika617c092007-05-21 20:14:23 -04001113
Robert Hancock53014e22007-05-05 15:36:36 -06001114 /* clear notifiers - note both ports need to be written with
1115 something even though we are only clearing on one */
1116 if (ap->port_no == 0) {
1117 notifier_clears[0] = 0xFFFFFFFF;
1118 notifier_clears[1] = 0;
1119 } else {
1120 notifier_clears[0] = 0;
1121 notifier_clears[1] = 0xFFFFFFFF;
1122 }
1123 pp = ap->host->ports[0]->private_data;
1124 writel(notifier_clears[0], pp->notifier_clear_block);
1125 pp = ap->host->ports[1]->private_data;
1126 writel(notifier_clears[1], pp->notifier_clear_block);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001127}
1128
Robert Hancockf5ecac22007-02-20 21:49:10 -06001129static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001130{
Robert Hancockf5ecac22007-02-20 21:49:10 -06001131 struct nv_adma_port_priv *pp = qc->ap->private_data;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001132
Jeff Garzikb4479162007-10-25 20:47:30 -04001133 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
Tejun Heofe06e5f2010-05-10 21:41:39 +02001134 ata_bmdma_post_internal_cmd(qc);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001135}
1136
1137static int nv_adma_port_start(struct ata_port *ap)
1138{
1139 struct device *dev = ap->host->dev;
1140 struct nv_adma_port_priv *pp;
1141 int rc;
1142 void *mem;
1143 dma_addr_t mem_dma;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001144 void __iomem *mmio;
Robert Hancock8959d302008-02-04 19:39:02 -06001145 struct pci_dev *pdev = to_pci_dev(dev);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001146 u16 tmp;
1147
1148 VPRINTK("ENTER\n");
1149
Robert Hancock8959d302008-02-04 19:39:02 -06001150 /* Ensure DMA mask is set to 32-bit before allocating legacy PRD and
1151 pad buffers */
1152 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1153 if (rc)
1154 return rc;
1155 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1156 if (rc)
1157 return rc;
1158
Tejun Heoc7087652010-05-10 21:41:34 +02001159 /* we might fallback to bmdma, allocate bmdma resources */
1160 rc = ata_bmdma_port_start(ap);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001161 if (rc)
1162 return rc;
1163
Tejun Heo24dc5f32007-01-20 16:00:28 +09001164 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1165 if (!pp)
1166 return -ENOMEM;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001167
Tejun Heo0d5ff562007-02-01 15:06:36 +09001168 mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT +
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001169 ap->port_no * NV_ADMA_PORT_SIZE;
1170 pp->ctl_block = mmio;
Tejun Heo0d5ff562007-02-01 15:06:36 +09001171 pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001172 pp->notifier_clear_block = pp->gen_block +
1173 NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no);
1174
Robert Hancock8959d302008-02-04 19:39:02 -06001175 /* Now that the legacy PRD and padding buffer are allocated we can
1176 safely raise the DMA mask to allocate the CPB/APRD table.
1177 These are allowed to fail since we store the value that ends up
1178 being used to set as the bounce limit in slave_config later if
1179 needed. */
1180 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1181 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1182 pp->adma_dma_mask = *dev->dma_mask;
1183
Tejun Heo24dc5f32007-01-20 16:00:28 +09001184 mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ,
1185 &mem_dma, GFP_KERNEL);
1186 if (!mem)
1187 return -ENOMEM;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001188 memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ);
1189
1190 /*
1191 * First item in chunk of DMA memory:
1192 * 128-byte command parameter block (CPB)
1193 * one for each command tag
1194 */
1195 pp->cpb = mem;
1196 pp->cpb_dma = mem_dma;
1197
1198 writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001199 writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001200
1201 mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1202 mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ;
1203
1204 /*
1205 * Second item: block of ADMA_SGTBL_LEN s/g entries
1206 */
1207 pp->aprd = mem;
1208 pp->aprd_dma = mem_dma;
1209
1210 ap->private_data = pp;
1211
1212 /* clear any outstanding interrupt conditions */
1213 writew(0xffff, mmio + NV_ADMA_STAT);
1214
1215 /* initialize port variables */
1216 pp->flags = NV_ADMA_PORT_REGISTER_MODE;
1217
1218 /* clear CPB fetch count */
1219 writew(0, mmio + NV_ADMA_CPB_COUNT);
1220
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001221 /* clear GO for register mode, enable interrupt */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001222 tmp = readw(mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001223 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1224 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001225
1226 tmp = readw(mmio + NV_ADMA_CTL);
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 udelay(1);
1230 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001231 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001232
1233 return 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001234}
1235
1236static void nv_adma_port_stop(struct ata_port *ap)
1237{
Robert Hancockfbbb2622006-10-27 19:08:41 -07001238 struct nv_adma_port_priv *pp = ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001239 void __iomem *mmio = pp->ctl_block;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001240
1241 VPRINTK("ENTER\n");
Robert Hancockfbbb2622006-10-27 19:08:41 -07001242 writew(0, mmio + NV_ADMA_CTL);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001243}
1244
Tejun Heo438ac6d2007-03-02 17:31:26 +09001245#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001246static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg)
1247{
1248 struct nv_adma_port_priv *pp = ap->private_data;
1249 void __iomem *mmio = pp->ctl_block;
1250
1251 /* Go to register mode - clears GO */
1252 nv_adma_register_mode(ap);
1253
1254 /* clear CPB fetch count */
1255 writew(0, mmio + NV_ADMA_CPB_COUNT);
1256
1257 /* disable interrupt, shut down port */
1258 writew(0, mmio + NV_ADMA_CTL);
1259
1260 return 0;
1261}
1262
1263static int nv_adma_port_resume(struct ata_port *ap)
1264{
1265 struct nv_adma_port_priv *pp = ap->private_data;
1266 void __iomem *mmio = pp->ctl_block;
1267 u16 tmp;
1268
1269 /* set CPB block location */
1270 writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001271 writel((pp->cpb_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001272
1273 /* clear any outstanding interrupt conditions */
1274 writew(0xffff, mmio + NV_ADMA_STAT);
1275
1276 /* initialize port variables */
1277 pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
1278
1279 /* clear CPB fetch count */
1280 writew(0, mmio + NV_ADMA_CPB_COUNT);
1281
1282 /* clear GO for register mode, enable interrupt */
1283 tmp = readw(mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001284 writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
1285 NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001286
1287 tmp = readw(mmio + NV_ADMA_CTL);
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 udelay(1);
1291 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001292 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001293
1294 return 0;
1295}
Tejun Heo438ac6d2007-03-02 17:31:26 +09001296#endif
Robert Hancockfbbb2622006-10-27 19:08:41 -07001297
Tejun Heo9a829cc2007-04-17 23:44:08 +09001298static void nv_adma_setup_port(struct ata_port *ap)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001299{
Tejun Heo9a829cc2007-04-17 23:44:08 +09001300 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1301 struct ata_ioports *ioport = &ap->ioaddr;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001302
1303 VPRINTK("ENTER\n");
1304
Tejun Heo9a829cc2007-04-17 23:44:08 +09001305 mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001306
Tejun Heo0d5ff562007-02-01 15:06:36 +09001307 ioport->cmd_addr = mmio;
1308 ioport->data_addr = mmio + (ATA_REG_DATA * 4);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001309 ioport->error_addr =
Tejun Heo0d5ff562007-02-01 15:06:36 +09001310 ioport->feature_addr = mmio + (ATA_REG_ERR * 4);
1311 ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4);
1312 ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4);
1313 ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4);
1314 ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4);
1315 ioport->device_addr = mmio + (ATA_REG_DEVICE * 4);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001316 ioport->status_addr =
Tejun Heo0d5ff562007-02-01 15:06:36 +09001317 ioport->command_addr = mmio + (ATA_REG_STATUS * 4);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001318 ioport->altstatus_addr =
Tejun Heo0d5ff562007-02-01 15:06:36 +09001319 ioport->ctl_addr = mmio + 0x20;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001320}
1321
Tejun Heo9a829cc2007-04-17 23:44:08 +09001322static int nv_adma_host_init(struct ata_host *host)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001323{
Tejun Heo9a829cc2007-04-17 23:44:08 +09001324 struct pci_dev *pdev = to_pci_dev(host->dev);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001325 unsigned int i;
1326 u32 tmp32;
1327
1328 VPRINTK("ENTER\n");
1329
1330 /* enable ADMA on the ports */
1331 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
1332 tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN |
1333 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
1334 NV_MCP_SATA_CFG_20_PORT1_EN |
1335 NV_MCP_SATA_CFG_20_PORT1_PWB_EN;
1336
1337 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
1338
Tejun Heo9a829cc2007-04-17 23:44:08 +09001339 for (i = 0; i < host->n_ports; i++)
1340 nv_adma_setup_port(host->ports[i]);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001341
Robert Hancockfbbb2622006-10-27 19:08:41 -07001342 return 0;
1343}
1344
1345static void nv_adma_fill_aprd(struct ata_queued_cmd *qc,
1346 struct scatterlist *sg,
1347 int idx,
1348 struct nv_adma_prd *aprd)
1349{
Robert Hancock41949ed2007-02-19 19:02:27 -06001350 u8 flags = 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001351 if (qc->tf.flags & ATA_TFLAG_WRITE)
1352 flags |= NV_APRD_WRITE;
1353 if (idx == qc->n_elem - 1)
1354 flags |= NV_APRD_END;
1355 else if (idx != 4)
1356 flags |= NV_APRD_CONT;
1357
1358 aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg)));
1359 aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */
Robert Hancock2dec7552006-11-26 14:20:19 -06001360 aprd->flags = flags;
Robert Hancock41949ed2007-02-19 19:02:27 -06001361 aprd->packet_len = 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001362}
1363
1364static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb)
1365{
1366 struct nv_adma_port_priv *pp = qc->ap->private_data;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001367 struct nv_adma_prd *aprd;
1368 struct scatterlist *sg;
Tejun Heoff2aeb12007-12-05 16:43:11 +09001369 unsigned int si;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001370
1371 VPRINTK("ENTER\n");
1372
Tejun Heoff2aeb12007-12-05 16:43:11 +09001373 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1374 aprd = (si < 5) ? &cpb->aprd[si] :
1375 &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (si-5)];
1376 nv_adma_fill_aprd(qc, sg, si, aprd);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001377 }
Tejun Heoff2aeb12007-12-05 16:43:11 +09001378 if (si > 5)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001379 cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag)));
Robert Hancock41949ed2007-02-19 19:02:27 -06001380 else
1381 cpb->next_aprd = cpu_to_le64(0);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001382}
1383
Robert Hancock382a6652007-02-05 16:26:02 -08001384static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc)
1385{
1386 struct nv_adma_port_priv *pp = qc->ap->private_data;
1387
1388 /* ADMA engine can only be used for non-ATAPI DMA commands,
Robert Hancock3f3debd2007-11-25 16:59:36 -06001389 or interrupt-driven no-data commands. */
Jeff Garzikb4479162007-10-25 20:47:30 -04001390 if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) ||
Robert Hancock3f3debd2007-11-25 16:59:36 -06001391 (qc->tf.flags & ATA_TFLAG_POLLING))
Robert Hancock382a6652007-02-05 16:26:02 -08001392 return 1;
1393
Jeff Garzikb4479162007-10-25 20:47:30 -04001394 if ((qc->flags & ATA_QCFLAG_DMAMAP) ||
Robert Hancock382a6652007-02-05 16:26:02 -08001395 (qc->tf.protocol == ATA_PROT_NODATA))
1396 return 0;
1397
1398 return 1;
1399}
1400
Robert Hancockfbbb2622006-10-27 19:08:41 -07001401static void nv_adma_qc_prep(struct ata_queued_cmd *qc)
1402{
1403 struct nv_adma_port_priv *pp = qc->ap->private_data;
1404 struct nv_adma_cpb *cpb = &pp->cpb[qc->tag];
1405 u8 ctl_flags = NV_CPB_CTL_CPB_VALID |
Robert Hancockfbbb2622006-10-27 19:08:41 -07001406 NV_CPB_CTL_IEN;
1407
Robert Hancock382a6652007-02-05 16:26:02 -08001408 if (nv_adma_use_reg_mode(qc)) {
Robert Hancock3f3debd2007-11-25 16:59:36 -06001409 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1410 (qc->flags & ATA_QCFLAG_DMAMAP));
Robert Hancock2dec7552006-11-26 14:20:19 -06001411 nv_adma_register_mode(qc->ap);
Tejun Heof47451c2010-05-10 21:41:40 +02001412 ata_bmdma_qc_prep(qc);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001413 return;
1414 }
1415
Robert Hancock41949ed2007-02-19 19:02:27 -06001416 cpb->resp_flags = NV_CPB_RESP_DONE;
1417 wmb();
1418 cpb->ctl_flags = 0;
1419 wmb();
Robert Hancockfbbb2622006-10-27 19:08:41 -07001420
1421 cpb->len = 3;
1422 cpb->tag = qc->tag;
1423 cpb->next_cpb_idx = 0;
1424
1425 /* turn on NCQ flags for NCQ commands */
1426 if (qc->tf.protocol == ATA_PROT_NCQ)
1427 ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA;
1428
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001429 VPRINTK("qc->flags = 0x%lx\n", qc->flags);
1430
Robert Hancockfbbb2622006-10-27 19:08:41 -07001431 nv_adma_tf_to_cpb(&qc->tf, cpb->tf);
1432
Jeff Garzikb4479162007-10-25 20:47:30 -04001433 if (qc->flags & ATA_QCFLAG_DMAMAP) {
Robert Hancock382a6652007-02-05 16:26:02 -08001434 nv_adma_fill_sg(qc, cpb);
1435 ctl_flags |= NV_CPB_CTL_APRD_VALID;
1436 } else
1437 memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001438
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001439 /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID
1440 until we are finished filling in all of the contents */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001441 wmb();
1442 cpb->ctl_flags = ctl_flags;
Robert Hancock41949ed2007-02-19 19:02:27 -06001443 wmb();
1444 cpb->resp_flags = 0;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001445}
1446
1447static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc)
1448{
Robert Hancock2dec7552006-11-26 14:20:19 -06001449 struct nv_adma_port_priv *pp = qc->ap->private_data;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001450 void __iomem *mmio = pp->ctl_block;
Robert Hancock5e5c74a2007-02-19 18:42:30 -06001451 int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001452
1453 VPRINTK("ENTER\n");
1454
Robert Hancock3f3debd2007-11-25 16:59:36 -06001455 /* We can't handle result taskfile with NCQ commands, since
1456 retrieving the taskfile switches us out of ADMA mode and would abort
1457 existing commands. */
1458 if (unlikely(qc->tf.protocol == ATA_PROT_NCQ &&
1459 (qc->flags & ATA_QCFLAG_RESULT_TF))) {
1460 ata_dev_printk(qc->dev, KERN_ERR,
1461 "NCQ w/ RESULT_TF not allowed\n");
1462 return AC_ERR_SYSTEM;
1463 }
1464
Robert Hancock382a6652007-02-05 16:26:02 -08001465 if (nv_adma_use_reg_mode(qc)) {
Robert Hancockfbbb2622006-10-27 19:08:41 -07001466 /* use ATA register mode */
Robert Hancock382a6652007-02-05 16:26:02 -08001467 VPRINTK("using ATA register mode: 0x%lx\n", qc->flags);
Robert Hancock3f3debd2007-11-25 16:59:36 -06001468 BUG_ON(!(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) &&
1469 (qc->flags & ATA_QCFLAG_DMAMAP));
Robert Hancockfbbb2622006-10-27 19:08:41 -07001470 nv_adma_register_mode(qc->ap);
Tejun Heo360ff782010-05-10 21:41:42 +02001471 return ata_bmdma_qc_issue(qc);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001472 } else
1473 nv_adma_mode(qc->ap);
1474
1475 /* write append register, command tag in lower 8 bits
1476 and (number of cpbs to append -1) in top 8 bits */
1477 wmb();
Robert Hancock5e5c74a2007-02-19 18:42:30 -06001478
Jeff Garzikb4479162007-10-25 20:47:30 -04001479 if (curr_ncq != pp->last_issue_ncq) {
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001480 /* Seems to need some delay before switching between NCQ and
1481 non-NCQ commands, else we get command timeouts and such. */
Robert Hancock5e5c74a2007-02-19 18:42:30 -06001482 udelay(20);
1483 pp->last_issue_ncq = curr_ncq;
1484 }
1485
Robert Hancockfbbb2622006-10-27 19:08:41 -07001486 writew(qc->tag, mmio + NV_ADMA_APPEND);
1487
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001488 DPRINTK("Issued tag %u\n", qc->tag);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001489
1490 return 0;
1491}
1492
David Howells7d12e782006-10-05 14:55:46 +01001493static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494{
Jeff Garzikcca39742006-08-24 03:19:22 -04001495 struct ata_host *host = dev_instance;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496 unsigned int i;
1497 unsigned int handled = 0;
1498 unsigned long flags;
1499
Jeff Garzikcca39742006-08-24 03:19:22 -04001500 spin_lock_irqsave(&host->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501
Jeff Garzikcca39742006-08-24 03:19:22 -04001502 for (i = 0; i < host->n_ports; i++) {
Tejun Heo3e4ec342010-05-10 21:41:30 +02001503 struct ata_port *ap = host->ports[i];
1504 struct ata_queued_cmd *qc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001505
Tejun Heo3e4ec342010-05-10 21:41:30 +02001506 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1507 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
Tejun Heoc3b28892010-05-19 22:10:21 +02001508 handled += ata_bmdma_port_intr(ap, qc);
Tejun Heo3e4ec342010-05-10 21:41:30 +02001509 } else {
1510 /*
1511 * No request pending? Clear interrupt status
1512 * anyway, in case there's one pending.
1513 */
1514 ap->ops->sff_check_status(ap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516 }
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++) {
Tejun Heo3e4ec342010-05-10 21:41:30 +02001528 handled += nv_host_intr(host->ports[i], irq_stat);
Tejun Heoada364e2006-06-17 15:49:56 +09001529 irq_stat >>= NV_INT_PORT_SHIFT;
1530 }
1531
1532 return IRQ_RETVAL(handled);
1533}
1534
David Howells7d12e782006-10-05 14:55:46 +01001535static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance)
Tejun Heoada364e2006-06-17 15:49:56 +09001536{
Jeff Garzikcca39742006-08-24 03:19:22 -04001537 struct ata_host *host = dev_instance;
Tejun Heoada364e2006-06-17 15:49:56 +09001538 u8 irq_stat;
1539 irqreturn_t ret;
1540
Jeff Garzikcca39742006-08-24 03:19:22 -04001541 spin_lock(&host->lock);
Tejun Heo0d5ff562007-02-01 15:06:36 +09001542 irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS);
Jeff Garzikcca39742006-08-24 03:19:22 -04001543 ret = nv_do_interrupt(host, irq_stat);
1544 spin_unlock(&host->lock);
Tejun Heoada364e2006-06-17 15:49:56 +09001545
1546 return ret;
1547}
1548
David Howells7d12e782006-10-05 14:55:46 +01001549static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
Tejun Heoada364e2006-06-17 15:49:56 +09001550{
Jeff Garzikcca39742006-08-24 03:19:22 -04001551 struct ata_host *host = dev_instance;
Tejun Heoada364e2006-06-17 15:49:56 +09001552 u8 irq_stat;
1553 irqreturn_t ret;
1554
Jeff Garzikcca39742006-08-24 03:19:22 -04001555 spin_lock(&host->lock);
Tejun Heo0d5ff562007-02-01 15:06:36 +09001556 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804);
Jeff Garzikcca39742006-08-24 03:19:22 -04001557 ret = nv_do_interrupt(host, irq_stat);
1558 spin_unlock(&host->lock);
Tejun Heoada364e2006-06-17 15:49:56 +09001559
1560 return ret;
1561}
1562
Tejun Heo82ef04f2008-07-31 17:02:40 +09001563static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001564{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565 if (sc_reg > SCR_CONTROL)
Tejun Heoda3dbb12007-07-16 14:29:40 +09001566 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001567
Tejun Heo82ef04f2008-07-31 17:02:40 +09001568 *val = ioread32(link->ap->ioaddr.scr_addr + (sc_reg * 4));
Tejun Heoda3dbb12007-07-16 14:29:40 +09001569 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570}
1571
Tejun Heo82ef04f2008-07-31 17:02:40 +09001572static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001573{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001574 if (sc_reg > SCR_CONTROL)
Tejun Heoda3dbb12007-07-16 14:29:40 +09001575 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001576
Tejun Heo82ef04f2008-07-31 17:02:40 +09001577 iowrite32(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
Tejun Heoda3dbb12007-07-16 14:29:40 +09001578 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001579}
1580
Tejun Heo7f4774b2009-06-10 16:29:07 +09001581static int nv_hardreset(struct ata_link *link, unsigned int *class,
1582 unsigned long deadline)
Tejun Heoe8caa3c2009-01-25 11:25:22 +09001583{
Tejun Heo7f4774b2009-06-10 16:29:07 +09001584 struct ata_eh_context *ehc = &link->eh_context;
Tejun Heoe8caa3c2009-01-25 11:25:22 +09001585
Tejun Heo7f4774b2009-06-10 16:29:07 +09001586 /* Do hardreset iff it's post-boot probing, please read the
1587 * comment above port ops for details.
1588 */
1589 if (!(link->ap->pflags & ATA_PFLAG_LOADING) &&
1590 !ata_dev_enabled(link->device))
1591 sata_link_hardreset(link, sata_deb_timing_hotplug, deadline,
1592 NULL, NULL);
Tejun Heo6489e322009-10-14 11:18:28 +09001593 else {
1594 const unsigned long *timing = sata_ehc_deb_timing(ehc);
1595 int rc;
1596
1597 if (!(ehc->i.flags & ATA_EHI_QUIET))
1598 ata_link_printk(link, KERN_INFO, "nv: skipping "
1599 "hardreset on occupied port\n");
1600
1601 /* make sure the link is online */
1602 rc = sata_link_resume(link, timing, deadline);
1603 /* whine about phy resume failure but proceed */
1604 if (rc && rc != -EOPNOTSUPP)
1605 ata_link_printk(link, KERN_WARNING, "failed to resume "
1606 "link (errno=%d)\n", rc);
1607 }
Tejun Heo7f4774b2009-06-10 16:29:07 +09001608
1609 /* device signature acquisition is unreliable */
1610 return -EAGAIN;
Tejun Heoe8caa3c2009-01-25 11:25:22 +09001611}
1612
Tejun Heo39f87582006-06-17 15:49:56 +09001613static void nv_nf2_freeze(struct ata_port *ap)
1614{
Tejun Heo0d5ff562007-02-01 15:06:36 +09001615 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
Tejun Heo39f87582006-06-17 15:49:56 +09001616 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1617 u8 mask;
1618
Tejun Heo0d5ff562007-02-01 15:06:36 +09001619 mask = ioread8(scr_addr + NV_INT_ENABLE);
Tejun Heo39f87582006-06-17 15:49:56 +09001620 mask &= ~(NV_INT_ALL << shift);
Tejun Heo0d5ff562007-02-01 15:06:36 +09001621 iowrite8(mask, scr_addr + NV_INT_ENABLE);
Tejun Heo39f87582006-06-17 15:49:56 +09001622}
1623
1624static void nv_nf2_thaw(struct ata_port *ap)
1625{
Tejun Heo0d5ff562007-02-01 15:06:36 +09001626 void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr;
Tejun Heo39f87582006-06-17 15:49:56 +09001627 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1628 u8 mask;
1629
Tejun Heo0d5ff562007-02-01 15:06:36 +09001630 iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS);
Tejun Heo39f87582006-06-17 15:49:56 +09001631
Tejun Heo0d5ff562007-02-01 15:06:36 +09001632 mask = ioread8(scr_addr + NV_INT_ENABLE);
Tejun Heo39f87582006-06-17 15:49:56 +09001633 mask |= (NV_INT_MASK << shift);
Tejun Heo0d5ff562007-02-01 15:06:36 +09001634 iowrite8(mask, scr_addr + NV_INT_ENABLE);
Tejun Heo39f87582006-06-17 15:49:56 +09001635}
1636
1637static void nv_ck804_freeze(struct ata_port *ap)
1638{
Tejun Heo0d5ff562007-02-01 15:06:36 +09001639 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
Tejun Heo39f87582006-06-17 15:49:56 +09001640 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1641 u8 mask;
1642
1643 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1644 mask &= ~(NV_INT_ALL << shift);
1645 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1646}
1647
1648static void nv_ck804_thaw(struct ata_port *ap)
1649{
Tejun Heo0d5ff562007-02-01 15:06:36 +09001650 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
Tejun Heo39f87582006-06-17 15:49:56 +09001651 int shift = ap->port_no * NV_INT_PORT_SHIFT;
1652 u8 mask;
1653
1654 writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804);
1655
1656 mask = readb(mmio_base + NV_INT_ENABLE_CK804);
1657 mask |= (NV_INT_MASK << shift);
1658 writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
1659}
1660
Kuan Luof140f0f2007-10-15 15:16:53 -04001661static void nv_mcp55_freeze(struct ata_port *ap)
1662{
1663 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1664 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1665 u32 mask;
1666
1667 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1668
1669 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1670 mask &= ~(NV_INT_ALL_MCP55 << shift);
1671 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
Kuan Luof140f0f2007-10-15 15:16:53 -04001672}
1673
1674static void nv_mcp55_thaw(struct ata_port *ap)
1675{
1676 void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR];
1677 int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55;
1678 u32 mask;
1679
1680 writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55);
1681
1682 mask = readl(mmio_base + NV_INT_ENABLE_MCP55);
1683 mask |= (NV_INT_MASK_MCP55 << shift);
1684 writel(mask, mmio_base + NV_INT_ENABLE_MCP55);
Kuan Luof140f0f2007-10-15 15:16:53 -04001685}
1686
Robert Hancockfbbb2622006-10-27 19:08:41 -07001687static void nv_adma_error_handler(struct ata_port *ap)
1688{
1689 struct nv_adma_port_priv *pp = ap->private_data;
Jeff Garzikb4479162007-10-25 20:47:30 -04001690 if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) {
Robert Hancockcdf56bc2007-01-03 18:13:57 -06001691 void __iomem *mmio = pp->ctl_block;
Robert Hancockfbbb2622006-10-27 19:08:41 -07001692 int i;
1693 u16 tmp;
Jeff Garzika84471f2007-02-26 05:51:33 -05001694
Jeff Garzikb4479162007-10-25 20:47:30 -04001695 if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
Robert Hancock2cb27852007-02-11 18:34:44 -06001696 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1697 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1698 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
1699 u32 status = readw(mmio + NV_ADMA_STAT);
Robert Hancock08af7412007-02-19 19:01:59 -06001700 u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT);
1701 u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX);
Robert Hancock2cb27852007-02-11 18:34:44 -06001702
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001703 ata_port_printk(ap, KERN_ERR,
1704 "EH in ADMA mode, notifier 0x%X "
Robert Hancock08af7412007-02-19 19:01:59 -06001705 "notifier_error 0x%X gen_ctl 0x%X status 0x%X "
1706 "next cpb count 0x%X next cpb idx 0x%x\n",
1707 notifier, notifier_error, gen_ctl, status,
1708 cpb_count, next_cpb_idx);
Robert Hancock2cb27852007-02-11 18:34:44 -06001709
Jeff Garzikb4479162007-10-25 20:47:30 -04001710 for (i = 0; i < NV_ADMA_MAX_CPBS; i++) {
Robert Hancock2cb27852007-02-11 18:34:44 -06001711 struct nv_adma_cpb *cpb = &pp->cpb[i];
Jeff Garzikb4479162007-10-25 20:47:30 -04001712 if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001713 ap->link.sactive & (1 << i))
Robert Hancock2cb27852007-02-11 18:34:44 -06001714 ata_port_printk(ap, KERN_ERR,
1715 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1716 i, cpb->ctl_flags, cpb->resp_flags);
1717 }
1718 }
Robert Hancockfbbb2622006-10-27 19:08:41 -07001719
Robert Hancockfbbb2622006-10-27 19:08:41 -07001720 /* Push us back into port register mode for error handling. */
1721 nv_adma_register_mode(ap);
1722
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001723 /* Mark all of the CPBs as invalid to prevent them from
1724 being executed */
Jeff Garzikb4479162007-10-25 20:47:30 -04001725 for (i = 0; i < NV_ADMA_MAX_CPBS; i++)
Robert Hancockfbbb2622006-10-27 19:08:41 -07001726 pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID;
1727
1728 /* clear CPB fetch count */
1729 writew(0, mmio + NV_ADMA_CPB_COUNT);
1730
1731 /* Reset channel */
1732 tmp = readw(mmio + NV_ADMA_CTL);
1733 writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzikb4479162007-10-25 20:47:30 -04001734 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001735 udelay(1);
1736 writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL);
Jeff Garzikb4479162007-10-25 20:47:30 -04001737 readw(mmio + NV_ADMA_CTL); /* flush posted write */
Robert Hancockfbbb2622006-10-27 19:08:41 -07001738 }
1739
Tejun Heofe06e5f2010-05-10 21:41:39 +02001740 ata_bmdma_error_handler(ap);
Robert Hancockfbbb2622006-10-27 19:08:41 -07001741}
1742
Kuan Luof140f0f2007-10-15 15:16:53 -04001743static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc)
1744{
1745 struct nv_swncq_port_priv *pp = ap->private_data;
1746 struct defer_queue *dq = &pp->defer_queue;
1747
1748 /* queue is full */
1749 WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE);
1750 dq->defer_bits |= (1 << qc->tag);
1751 dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->tag;
1752}
1753
1754static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap)
1755{
1756 struct nv_swncq_port_priv *pp = ap->private_data;
1757 struct defer_queue *dq = &pp->defer_queue;
1758 unsigned int tag;
1759
1760 if (dq->head == dq->tail) /* null queue */
1761 return NULL;
1762
1763 tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)];
1764 dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON;
1765 WARN_ON(!(dq->defer_bits & (1 << tag)));
1766 dq->defer_bits &= ~(1 << tag);
1767
1768 return ata_qc_from_tag(ap, tag);
1769}
1770
1771static void nv_swncq_fis_reinit(struct ata_port *ap)
1772{
1773 struct nv_swncq_port_priv *pp = ap->private_data;
1774
1775 pp->dhfis_bits = 0;
1776 pp->dmafis_bits = 0;
1777 pp->sdbfis_bits = 0;
1778 pp->ncq_flags = 0;
1779}
1780
1781static void nv_swncq_pp_reinit(struct ata_port *ap)
1782{
1783 struct nv_swncq_port_priv *pp = ap->private_data;
1784 struct defer_queue *dq = &pp->defer_queue;
1785
1786 dq->head = 0;
1787 dq->tail = 0;
1788 dq->defer_bits = 0;
1789 pp->qc_active = 0;
1790 pp->last_issue_tag = ATA_TAG_POISON;
1791 nv_swncq_fis_reinit(ap);
1792}
1793
1794static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis)
1795{
1796 struct nv_swncq_port_priv *pp = ap->private_data;
1797
1798 writew(fis, pp->irq_block);
1799}
1800
1801static void __ata_bmdma_stop(struct ata_port *ap)
1802{
1803 struct ata_queued_cmd qc;
1804
1805 qc.ap = ap;
1806 ata_bmdma_stop(&qc);
1807}
1808
1809static void nv_swncq_ncq_stop(struct ata_port *ap)
1810{
1811 struct nv_swncq_port_priv *pp = ap->private_data;
1812 unsigned int i;
1813 u32 sactive;
1814 u32 done_mask;
1815
1816 ata_port_printk(ap, KERN_ERR,
1817 "EH in SWNCQ mode,QC:qc_active 0x%X sactive 0x%X\n",
1818 ap->qc_active, ap->link.sactive);
1819 ata_port_printk(ap, KERN_ERR,
1820 "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n "
1821 "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n",
1822 pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag,
1823 pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits);
1824
1825 ata_port_printk(ap, KERN_ERR, "ATA_REG 0x%X ERR_REG 0x%X\n",
Tejun Heo5682ed32008-04-07 22:47:16 +09001826 ap->ops->sff_check_status(ap),
Kuan Luof140f0f2007-10-15 15:16:53 -04001827 ioread8(ap->ioaddr.error_addr));
1828
1829 sactive = readl(pp->sactive_block);
1830 done_mask = pp->qc_active ^ sactive;
1831
1832 ata_port_printk(ap, KERN_ERR, "tag : dhfis dmafis sdbfis sacitve\n");
1833 for (i = 0; i < ATA_MAX_QUEUE; i++) {
1834 u8 err = 0;
1835 if (pp->qc_active & (1 << i))
1836 err = 0;
1837 else if (done_mask & (1 << i))
1838 err = 1;
1839 else
1840 continue;
1841
1842 ata_port_printk(ap, KERN_ERR,
1843 "tag 0x%x: %01x %01x %01x %01x %s\n", i,
1844 (pp->dhfis_bits >> i) & 0x1,
1845 (pp->dmafis_bits >> i) & 0x1,
1846 (pp->sdbfis_bits >> i) & 0x1,
1847 (sactive >> i) & 0x1,
1848 (err ? "error! tag doesn't exit" : " "));
1849 }
1850
1851 nv_swncq_pp_reinit(ap);
Tejun Heo5682ed32008-04-07 22:47:16 +09001852 ap->ops->sff_irq_clear(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04001853 __ata_bmdma_stop(ap);
1854 nv_swncq_irq_clear(ap, 0xffff);
1855}
1856
1857static void nv_swncq_error_handler(struct ata_port *ap)
1858{
1859 struct ata_eh_context *ehc = &ap->link.eh_context;
1860
1861 if (ap->link.sactive) {
1862 nv_swncq_ncq_stop(ap);
Tejun Heocf480622008-01-24 00:05:14 +09001863 ehc->i.action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04001864 }
1865
Tejun Heofe06e5f2010-05-10 21:41:39 +02001866 ata_bmdma_error_handler(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04001867}
1868
1869#ifdef CONFIG_PM
1870static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg)
1871{
1872 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1873 u32 tmp;
1874
1875 /* clear irq */
1876 writel(~0, mmio + NV_INT_STATUS_MCP55);
1877
1878 /* disable irq */
1879 writel(0, mmio + NV_INT_ENABLE_MCP55);
1880
1881 /* disable swncq */
1882 tmp = readl(mmio + NV_CTL_MCP55);
1883 tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ);
1884 writel(tmp, mmio + NV_CTL_MCP55);
1885
1886 return 0;
1887}
1888
1889static int nv_swncq_port_resume(struct ata_port *ap)
1890{
1891 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1892 u32 tmp;
1893
1894 /* clear irq */
1895 writel(~0, mmio + NV_INT_STATUS_MCP55);
1896
1897 /* enable irq */
1898 writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1899
1900 /* enable swncq */
1901 tmp = readl(mmio + NV_CTL_MCP55);
1902 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1903
1904 return 0;
1905}
1906#endif
1907
1908static void nv_swncq_host_init(struct ata_host *host)
1909{
1910 u32 tmp;
1911 void __iomem *mmio = host->iomap[NV_MMIO_BAR];
1912 struct pci_dev *pdev = to_pci_dev(host->dev);
1913 u8 regval;
1914
1915 /* disable ECO 398 */
1916 pci_read_config_byte(pdev, 0x7f, &regval);
1917 regval &= ~(1 << 7);
1918 pci_write_config_byte(pdev, 0x7f, regval);
1919
1920 /* enable swncq */
1921 tmp = readl(mmio + NV_CTL_MCP55);
1922 VPRINTK("HOST_CTL:0x%X\n", tmp);
1923 writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55);
1924
1925 /* enable irq intr */
1926 tmp = readl(mmio + NV_INT_ENABLE_MCP55);
1927 VPRINTK("HOST_ENABLE:0x%X\n", tmp);
1928 writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55);
1929
1930 /* clear port irq */
1931 writel(~0x0, mmio + NV_INT_STATUS_MCP55);
1932}
1933
1934static int nv_swncq_slave_config(struct scsi_device *sdev)
1935{
1936 struct ata_port *ap = ata_shost_to_port(sdev->host);
1937 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
1938 struct ata_device *dev;
1939 int rc;
1940 u8 rev;
1941 u8 check_maxtor = 0;
1942 unsigned char model_num[ATA_ID_PROD_LEN + 1];
1943
1944 rc = ata_scsi_slave_config(sdev);
1945 if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun)
1946 /* Not a proper libata device, ignore */
1947 return rc;
1948
1949 dev = &ap->link.device[sdev->id];
1950 if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI)
1951 return rc;
1952
1953 /* if MCP51 and Maxtor, then disable ncq */
1954 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA ||
1955 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2)
1956 check_maxtor = 1;
1957
1958 /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */
1959 if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA ||
1960 pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) {
1961 pci_read_config_byte(pdev, 0x8, &rev);
1962 if (rev <= 0xa2)
1963 check_maxtor = 1;
1964 }
1965
1966 if (!check_maxtor)
1967 return rc;
1968
1969 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
1970
1971 if (strncmp(model_num, "Maxtor", 6) == 0) {
Mike Christiee881a172009-10-15 17:46:39 -07001972 ata_scsi_change_queue_depth(sdev, 1, SCSI_QDEPTH_DEFAULT);
Kuan Luof140f0f2007-10-15 15:16:53 -04001973 ata_dev_printk(dev, KERN_NOTICE,
1974 "Disabling SWNCQ mode (depth %x)\n", sdev->queue_depth);
1975 }
1976
1977 return rc;
1978}
1979
1980static int nv_swncq_port_start(struct ata_port *ap)
1981{
1982 struct device *dev = ap->host->dev;
1983 void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR];
1984 struct nv_swncq_port_priv *pp;
1985 int rc;
1986
Tejun Heoc7087652010-05-10 21:41:34 +02001987 /* we might fallback to bmdma, allocate bmdma resources */
1988 rc = ata_bmdma_port_start(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04001989 if (rc)
1990 return rc;
1991
1992 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1993 if (!pp)
1994 return -ENOMEM;
1995
1996 pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE,
1997 &pp->prd_dma, GFP_KERNEL);
1998 if (!pp->prd)
1999 return -ENOMEM;
2000 memset(pp->prd, 0, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE);
2001
2002 ap->private_data = pp;
2003 pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE;
2004 pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2;
2005 pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2;
2006
2007 return 0;
2008}
2009
2010static void nv_swncq_qc_prep(struct ata_queued_cmd *qc)
2011{
2012 if (qc->tf.protocol != ATA_PROT_NCQ) {
Tejun Heof47451c2010-05-10 21:41:40 +02002013 ata_bmdma_qc_prep(qc);
Kuan Luof140f0f2007-10-15 15:16:53 -04002014 return;
2015 }
2016
2017 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
2018 return;
2019
2020 nv_swncq_fill_sg(qc);
2021}
2022
2023static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
2024{
2025 struct ata_port *ap = qc->ap;
2026 struct scatterlist *sg;
Kuan Luof140f0f2007-10-15 15:16:53 -04002027 struct nv_swncq_port_priv *pp = ap->private_data;
Tejun Heof60d7012010-05-10 21:41:41 +02002028 struct ata_bmdma_prd *prd;
Tejun Heoff2aeb12007-12-05 16:43:11 +09002029 unsigned int si, idx;
Kuan Luof140f0f2007-10-15 15:16:53 -04002030
2031 prd = pp->prd + ATA_MAX_PRD * qc->tag;
2032
2033 idx = 0;
Tejun Heoff2aeb12007-12-05 16:43:11 +09002034 for_each_sg(qc->sg, sg, qc->n_elem, si) {
Kuan Luof140f0f2007-10-15 15:16:53 -04002035 u32 addr, offset;
2036 u32 sg_len, len;
2037
2038 addr = (u32)sg_dma_address(sg);
2039 sg_len = sg_dma_len(sg);
2040
2041 while (sg_len) {
2042 offset = addr & 0xffff;
2043 len = sg_len;
2044 if ((offset + sg_len) > 0x10000)
2045 len = 0x10000 - offset;
2046
2047 prd[idx].addr = cpu_to_le32(addr);
2048 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
2049
2050 idx++;
2051 sg_len -= len;
2052 addr += len;
2053 }
2054 }
2055
Tejun Heoff2aeb12007-12-05 16:43:11 +09002056 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
Kuan Luof140f0f2007-10-15 15:16:53 -04002057}
2058
2059static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap,
2060 struct ata_queued_cmd *qc)
2061{
2062 struct nv_swncq_port_priv *pp = ap->private_data;
2063
2064 if (qc == NULL)
2065 return 0;
2066
2067 DPRINTK("Enter\n");
2068
2069 writel((1 << qc->tag), pp->sactive_block);
2070 pp->last_issue_tag = qc->tag;
2071 pp->dhfis_bits &= ~(1 << qc->tag);
2072 pp->dmafis_bits &= ~(1 << qc->tag);
2073 pp->qc_active |= (0x1 << qc->tag);
2074
Tejun Heo5682ed32008-04-07 22:47:16 +09002075 ap->ops->sff_tf_load(ap, &qc->tf); /* load tf registers */
2076 ap->ops->sff_exec_command(ap, &qc->tf);
Kuan Luof140f0f2007-10-15 15:16:53 -04002077
2078 DPRINTK("Issued tag %u\n", qc->tag);
2079
2080 return 0;
2081}
2082
2083static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc)
2084{
2085 struct ata_port *ap = qc->ap;
2086 struct nv_swncq_port_priv *pp = ap->private_data;
2087
2088 if (qc->tf.protocol != ATA_PROT_NCQ)
Tejun Heo360ff782010-05-10 21:41:42 +02002089 return ata_bmdma_qc_issue(qc);
Kuan Luof140f0f2007-10-15 15:16:53 -04002090
2091 DPRINTK("Enter\n");
2092
2093 if (!pp->qc_active)
2094 nv_swncq_issue_atacmd(ap, qc);
2095 else
2096 nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */
2097
2098 return 0;
2099}
2100
2101static void nv_swncq_hotplug(struct ata_port *ap, u32 fis)
2102{
2103 u32 serror;
2104 struct ata_eh_info *ehi = &ap->link.eh_info;
2105
2106 ata_ehi_clear_desc(ehi);
2107
2108 /* AHCI needs SError cleared; otherwise, it might lock up */
2109 sata_scr_read(&ap->link, SCR_ERROR, &serror);
2110 sata_scr_write(&ap->link, SCR_ERROR, serror);
2111
2112 /* analyze @irq_stat */
2113 if (fis & NV_SWNCQ_IRQ_ADDED)
2114 ata_ehi_push_desc(ehi, "hot plug");
2115 else if (fis & NV_SWNCQ_IRQ_REMOVED)
2116 ata_ehi_push_desc(ehi, "hot unplug");
2117
2118 ata_ehi_hotplugged(ehi);
2119
2120 /* okay, let's hand over to EH */
2121 ehi->serror |= serror;
2122
2123 ata_port_freeze(ap);
2124}
2125
2126static int nv_swncq_sdbfis(struct ata_port *ap)
2127{
2128 struct ata_queued_cmd *qc;
2129 struct nv_swncq_port_priv *pp = ap->private_data;
2130 struct ata_eh_info *ehi = &ap->link.eh_info;
2131 u32 sactive;
2132 int nr_done = 0;
2133 u32 done_mask;
2134 int i;
2135 u8 host_stat;
2136 u8 lack_dhfis = 0;
2137
2138 host_stat = ap->ops->bmdma_status(ap);
2139 if (unlikely(host_stat & ATA_DMA_ERR)) {
2140 /* error when transfering data to/from memory */
2141 ata_ehi_clear_desc(ehi);
2142 ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
2143 ehi->err_mask |= AC_ERR_HOST_BUS;
Tejun Heocf480622008-01-24 00:05:14 +09002144 ehi->action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04002145 return -EINVAL;
2146 }
2147
Tejun Heo5682ed32008-04-07 22:47:16 +09002148 ap->ops->sff_irq_clear(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04002149 __ata_bmdma_stop(ap);
2150
2151 sactive = readl(pp->sactive_block);
2152 done_mask = pp->qc_active ^ sactive;
2153
2154 if (unlikely(done_mask & sactive)) {
2155 ata_ehi_clear_desc(ehi);
2156 ata_ehi_push_desc(ehi, "illegal SWNCQ:qc_active transition"
2157 "(%08x->%08x)", pp->qc_active, sactive);
2158 ehi->err_mask |= AC_ERR_HSM;
Tejun Heocf480622008-01-24 00:05:14 +09002159 ehi->action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04002160 return -EINVAL;
2161 }
2162 for (i = 0; i < ATA_MAX_QUEUE; i++) {
2163 if (!(done_mask & (1 << i)))
2164 continue;
2165
2166 qc = ata_qc_from_tag(ap, i);
2167 if (qc) {
2168 ata_qc_complete(qc);
2169 pp->qc_active &= ~(1 << i);
2170 pp->dhfis_bits &= ~(1 << i);
2171 pp->dmafis_bits &= ~(1 << i);
2172 pp->sdbfis_bits |= (1 << i);
2173 nr_done++;
2174 }
2175 }
2176
2177 if (!ap->qc_active) {
2178 DPRINTK("over\n");
2179 nv_swncq_pp_reinit(ap);
2180 return nr_done;
2181 }
2182
2183 if (pp->qc_active & pp->dhfis_bits)
2184 return nr_done;
2185
2186 if ((pp->ncq_flags & ncq_saw_backout) ||
2187 (pp->qc_active ^ pp->dhfis_bits))
2188 /* if the controller cann't get a device to host register FIS,
2189 * The driver needs to reissue the new command.
2190 */
2191 lack_dhfis = 1;
2192
2193 DPRINTK("id 0x%x QC: qc_active 0x%x,"
2194 "SWNCQ:qc_active 0x%X defer_bits %X "
2195 "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n",
2196 ap->print_id, ap->qc_active, pp->qc_active,
2197 pp->defer_queue.defer_bits, pp->dhfis_bits,
2198 pp->dmafis_bits, pp->last_issue_tag);
2199
2200 nv_swncq_fis_reinit(ap);
2201
2202 if (lack_dhfis) {
2203 qc = ata_qc_from_tag(ap, pp->last_issue_tag);
2204 nv_swncq_issue_atacmd(ap, qc);
2205 return nr_done;
2206 }
2207
2208 if (pp->defer_queue.defer_bits) {
2209 /* send deferral queue command */
2210 qc = nv_swncq_qc_from_dq(ap);
2211 WARN_ON(qc == NULL);
2212 nv_swncq_issue_atacmd(ap, qc);
2213 }
2214
2215 return nr_done;
2216}
2217
2218static inline u32 nv_swncq_tag(struct ata_port *ap)
2219{
2220 struct nv_swncq_port_priv *pp = ap->private_data;
2221 u32 tag;
2222
2223 tag = readb(pp->tag_block) >> 2;
2224 return (tag & 0x1f);
2225}
2226
2227static int nv_swncq_dmafis(struct ata_port *ap)
2228{
2229 struct ata_queued_cmd *qc;
2230 unsigned int rw;
2231 u8 dmactl;
2232 u32 tag;
2233 struct nv_swncq_port_priv *pp = ap->private_data;
2234
2235 __ata_bmdma_stop(ap);
2236 tag = nv_swncq_tag(ap);
2237
2238 DPRINTK("dma setup tag 0x%x\n", tag);
2239 qc = ata_qc_from_tag(ap, tag);
2240
2241 if (unlikely(!qc))
2242 return 0;
2243
2244 rw = qc->tf.flags & ATA_TFLAG_WRITE;
2245
2246 /* load PRD table addr. */
2247 iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->tag,
2248 ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
2249
2250 /* specify data direction, triple-check start bit is clear */
2251 dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2252 dmactl &= ~ATA_DMA_WR;
2253 if (!rw)
2254 dmactl |= ATA_DMA_WR;
2255
2256 iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
2257
2258 return 1;
2259}
2260
2261static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
2262{
2263 struct nv_swncq_port_priv *pp = ap->private_data;
2264 struct ata_queued_cmd *qc;
2265 struct ata_eh_info *ehi = &ap->link.eh_info;
2266 u32 serror;
2267 u8 ata_stat;
2268 int rc = 0;
2269
Tejun Heo5682ed32008-04-07 22:47:16 +09002270 ata_stat = ap->ops->sff_check_status(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04002271 nv_swncq_irq_clear(ap, fis);
2272 if (!fis)
2273 return;
2274
2275 if (ap->pflags & ATA_PFLAG_FROZEN)
2276 return;
2277
2278 if (fis & NV_SWNCQ_IRQ_HOTPLUG) {
2279 nv_swncq_hotplug(ap, fis);
2280 return;
2281 }
2282
2283 if (!pp->qc_active)
2284 return;
2285
Tejun Heo82ef04f2008-07-31 17:02:40 +09002286 if (ap->ops->scr_read(&ap->link, SCR_ERROR, &serror))
Kuan Luof140f0f2007-10-15 15:16:53 -04002287 return;
Tejun Heo82ef04f2008-07-31 17:02:40 +09002288 ap->ops->scr_write(&ap->link, SCR_ERROR, serror);
Kuan Luof140f0f2007-10-15 15:16:53 -04002289
2290 if (ata_stat & ATA_ERR) {
2291 ata_ehi_clear_desc(ehi);
2292 ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis);
2293 ehi->err_mask |= AC_ERR_DEV;
2294 ehi->serror |= serror;
Tejun Heocf480622008-01-24 00:05:14 +09002295 ehi->action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04002296 ata_port_freeze(ap);
2297 return;
2298 }
2299
2300 if (fis & NV_SWNCQ_IRQ_BACKOUT) {
2301 /* If the IRQ is backout, driver must issue
2302 * the new command again some time later.
2303 */
2304 pp->ncq_flags |= ncq_saw_backout;
2305 }
2306
2307 if (fis & NV_SWNCQ_IRQ_SDBFIS) {
2308 pp->ncq_flags |= ncq_saw_sdb;
2309 DPRINTK("id 0x%x SWNCQ: qc_active 0x%X "
2310 "dhfis 0x%X dmafis 0x%X sactive 0x%X\n",
2311 ap->print_id, pp->qc_active, pp->dhfis_bits,
2312 pp->dmafis_bits, readl(pp->sactive_block));
2313 rc = nv_swncq_sdbfis(ap);
2314 if (rc < 0)
2315 goto irq_error;
2316 }
2317
2318 if (fis & NV_SWNCQ_IRQ_DHREGFIS) {
2319 /* The interrupt indicates the new command
2320 * was transmitted correctly to the drive.
2321 */
2322 pp->dhfis_bits |= (0x1 << pp->last_issue_tag);
2323 pp->ncq_flags |= ncq_saw_d2h;
2324 if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) {
2325 ata_ehi_push_desc(ehi, "illegal fis transaction");
2326 ehi->err_mask |= AC_ERR_HSM;
Tejun Heocf480622008-01-24 00:05:14 +09002327 ehi->action |= ATA_EH_RESET;
Kuan Luof140f0f2007-10-15 15:16:53 -04002328 goto irq_error;
2329 }
2330
2331 if (!(fis & NV_SWNCQ_IRQ_DMASETUP) &&
2332 !(pp->ncq_flags & ncq_saw_dmas)) {
Tejun Heo5682ed32008-04-07 22:47:16 +09002333 ata_stat = ap->ops->sff_check_status(ap);
Kuan Luof140f0f2007-10-15 15:16:53 -04002334 if (ata_stat & ATA_BUSY)
2335 goto irq_exit;
2336
2337 if (pp->defer_queue.defer_bits) {
2338 DPRINTK("send next command\n");
2339 qc = nv_swncq_qc_from_dq(ap);
2340 nv_swncq_issue_atacmd(ap, qc);
2341 }
2342 }
2343 }
2344
2345 if (fis & NV_SWNCQ_IRQ_DMASETUP) {
2346 /* program the dma controller with appropriate PRD buffers
2347 * and start the DMA transfer for requested command.
2348 */
2349 pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap));
2350 pp->ncq_flags |= ncq_saw_dmas;
2351 rc = nv_swncq_dmafis(ap);
2352 }
2353
2354irq_exit:
2355 return;
2356irq_error:
2357 ata_ehi_push_desc(ehi, "fis:0x%x", fis);
2358 ata_port_freeze(ap);
2359 return;
2360}
2361
2362static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance)
2363{
2364 struct ata_host *host = dev_instance;
2365 unsigned int i;
2366 unsigned int handled = 0;
2367 unsigned long flags;
2368 u32 irq_stat;
2369
2370 spin_lock_irqsave(&host->lock, flags);
2371
2372 irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55);
2373
2374 for (i = 0; i < host->n_ports; i++) {
2375 struct ata_port *ap = host->ports[i];
2376
Tejun Heo3e4ec342010-05-10 21:41:30 +02002377 if (ap->link.sactive) {
2378 nv_swncq_host_interrupt(ap, (u16)irq_stat);
2379 handled = 1;
2380 } else {
2381 if (irq_stat) /* reserve Hotplug */
2382 nv_swncq_irq_clear(ap, 0xfff0);
Kuan Luof140f0f2007-10-15 15:16:53 -04002383
Tejun Heo3e4ec342010-05-10 21:41:30 +02002384 handled += nv_host_intr(ap, (u8)irq_stat);
Kuan Luof140f0f2007-10-15 15:16:53 -04002385 }
2386 irq_stat >>= NV_INT_PORT_SHIFT_MCP55;
2387 }
2388
2389 spin_unlock_irqrestore(&host->lock, flags);
2390
2391 return IRQ_RETVAL(handled);
2392}
2393
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002394static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002395{
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002396 static int printed_version;
Tejun Heo1626aeb2007-05-04 12:43:58 +02002397 const struct ata_port_info *ppi[] = { NULL, NULL };
Tejun Heo95947192008-03-25 12:22:49 +09002398 struct nv_pi_priv *ipriv;
Tejun Heo9a829cc2007-04-17 23:44:08 +09002399 struct ata_host *host;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002400 struct nv_host_priv *hpriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002401 int rc;
2402 u32 bar;
Tejun Heo0d5ff562007-02-01 15:06:36 +09002403 void __iomem *base;
Robert Hancockfbbb2622006-10-27 19:08:41 -07002404 unsigned long type = ent->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002405
2406 // Make sure this is a SATA controller by counting the number of bars
2407 // (NVIDIA SATA controllers will always have six bars). Otherwise,
2408 // it's an IDE controller and we ignore it.
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002409 for (bar = 0; bar < 6; bar++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002410 if (pci_resource_start(pdev, bar) == 0)
2411 return -ENODEV;
2412
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002413 if (!printed_version++)
Jeff Garzika9524a72005-10-30 14:39:11 -05002414 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415
Tejun Heo24dc5f32007-01-20 16:00:28 +09002416 rc = pcim_enable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002417 if (rc)
Tejun Heo24dc5f32007-01-20 16:00:28 +09002418 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002419
Tejun Heo9a829cc2007-04-17 23:44:08 +09002420 /* determine type and allocate host */
Kuan Luof140f0f2007-10-15 15:16:53 -04002421 if (type == CK804 && adma_enabled) {
Robert Hancockfbbb2622006-10-27 19:08:41 -07002422 dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n");
2423 type = ADMA;
Tejun Heo2d775702009-01-25 11:29:38 +09002424 } else if (type == MCP5x && swncq_enabled) {
2425 dev_printk(KERN_NOTICE, &pdev->dev, "Using SWNCQ mode\n");
2426 type = SWNCQ;
Jeff Garzik360737a2007-10-29 06:49:24 -04002427 }
2428
Tejun Heo1626aeb2007-05-04 12:43:58 +02002429 ppi[0] = &nv_port_info[type];
Tejun Heo95947192008-03-25 12:22:49 +09002430 ipriv = ppi[0]->private_data;
Tejun Heo1c5afdf2010-05-19 22:10:22 +02002431 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
Tejun Heo9a829cc2007-04-17 23:44:08 +09002432 if (rc)
2433 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002434
Tejun Heo24dc5f32007-01-20 16:00:28 +09002435 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002436 if (!hpriv)
Tejun Heo24dc5f32007-01-20 16:00:28 +09002437 return -ENOMEM;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002438 hpriv->type = type;
Tejun Heo9a829cc2007-04-17 23:44:08 +09002439 host->private_data = hpriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002440
Tejun Heo9a829cc2007-04-17 23:44:08 +09002441 /* request and iomap NV_MMIO_BAR */
2442 rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME);
2443 if (rc)
2444 return rc;
2445
2446 /* configure SCR access */
2447 base = host->iomap[NV_MMIO_BAR];
2448 host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
2449 host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
Jeff Garzik02cbd922006-03-22 23:59:46 -05002450
Tejun Heoada364e2006-06-17 15:49:56 +09002451 /* enable SATA space for CK804 */
Robert Hancockfbbb2622006-10-27 19:08:41 -07002452 if (type >= CK804) {
Tejun Heoada364e2006-06-17 15:49:56 +09002453 u8 regval;
2454
2455 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2456 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2457 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2458 }
2459
Tejun Heo9a829cc2007-04-17 23:44:08 +09002460 /* init ADMA */
Robert Hancockfbbb2622006-10-27 19:08:41 -07002461 if (type == ADMA) {
Tejun Heo9a829cc2007-04-17 23:44:08 +09002462 rc = nv_adma_host_init(host);
Robert Hancockfbbb2622006-10-27 19:08:41 -07002463 if (rc)
Tejun Heo24dc5f32007-01-20 16:00:28 +09002464 return rc;
Jeff Garzik360737a2007-10-29 06:49:24 -04002465 } else if (type == SWNCQ)
Kuan Luof140f0f2007-10-15 15:16:53 -04002466 nv_swncq_host_init(host);
Robert Hancockfbbb2622006-10-27 19:08:41 -07002467
Tony Vroon51c89492009-08-06 00:50:09 +01002468 if (msi_enabled) {
2469 dev_printk(KERN_NOTICE, &pdev->dev, "Using MSI\n");
2470 pci_enable_msi(pdev);
2471 }
2472
Tejun Heo9a829cc2007-04-17 23:44:08 +09002473 pci_set_master(pdev);
Tejun Heo95cc2c72010-05-14 11:48:50 +02002474 return ata_pci_sff_activate_host(host, ipriv->irq_handler, ipriv->sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002475}
2476
Tejun Heo438ac6d2007-03-02 17:31:26 +09002477#ifdef CONFIG_PM
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002478static int nv_pci_device_resume(struct pci_dev *pdev)
2479{
2480 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2481 struct nv_host_priv *hpriv = host->private_data;
Robert Hancockce053fa2007-02-05 16:26:04 -08002482 int rc;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002483
Robert Hancockce053fa2007-02-05 16:26:04 -08002484 rc = ata_pci_device_do_resume(pdev);
Jeff Garzikb4479162007-10-25 20:47:30 -04002485 if (rc)
Robert Hancockce053fa2007-02-05 16:26:04 -08002486 return rc;
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002487
2488 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
Jeff Garzikb4479162007-10-25 20:47:30 -04002489 if (hpriv->type >= CK804) {
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002490 u8 regval;
2491
2492 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2493 regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2494 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
2495 }
Jeff Garzikb4479162007-10-25 20:47:30 -04002496 if (hpriv->type == ADMA) {
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002497 u32 tmp32;
2498 struct nv_adma_port_priv *pp;
2499 /* enable/disable ADMA on the ports appropriately */
2500 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2501
2502 pp = host->ports[0]->private_data;
Jeff Garzikb4479162007-10-25 20:47:30 -04002503 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002504 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002505 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002506 else
2507 tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN |
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002508 NV_MCP_SATA_CFG_20_PORT0_PWB_EN);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002509 pp = host->ports[1]->private_data;
Jeff Garzikb4479162007-10-25 20:47:30 -04002510 if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE)
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002511 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN |
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002512 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002513 else
2514 tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN |
Jeff Garzik5796d1c2007-10-26 00:03:37 -04002515 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002516
2517 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2518 }
2519 }
2520
2521 ata_host_resume(host);
2522
2523 return 0;
2524}
Tejun Heo438ac6d2007-03-02 17:31:26 +09002525#endif
Robert Hancockcdf56bc2007-01-03 18:13:57 -06002526
Jeff Garzikcca39742006-08-24 03:19:22 -04002527static void nv_ck804_host_stop(struct ata_host *host)
Tejun Heoada364e2006-06-17 15:49:56 +09002528{
Jeff Garzikcca39742006-08-24 03:19:22 -04002529 struct pci_dev *pdev = to_pci_dev(host->dev);
Tejun Heoada364e2006-06-17 15:49:56 +09002530 u8 regval;
2531
2532 /* disable SATA space for CK804 */
2533 pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, &regval);
2534 regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN;
2535 pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval);
Tejun Heoada364e2006-06-17 15:49:56 +09002536}
2537
Robert Hancockfbbb2622006-10-27 19:08:41 -07002538static void nv_adma_host_stop(struct ata_host *host)
2539{
2540 struct pci_dev *pdev = to_pci_dev(host->dev);
Robert Hancockfbbb2622006-10-27 19:08:41 -07002541 u32 tmp32;
2542
Robert Hancockfbbb2622006-10-27 19:08:41 -07002543 /* disable ADMA on the ports */
2544 pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32);
2545 tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN |
2546 NV_MCP_SATA_CFG_20_PORT0_PWB_EN |
2547 NV_MCP_SATA_CFG_20_PORT1_EN |
2548 NV_MCP_SATA_CFG_20_PORT1_PWB_EN);
2549
2550 pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32);
2551
2552 nv_ck804_host_stop(host);
2553}
2554
Linus Torvalds1da177e2005-04-16 15:20:36 -07002555static int __init nv_init(void)
2556{
Pavel Roskinb7887192006-08-10 18:13:18 +09002557 return pci_register_driver(&nv_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002558}
2559
2560static void __exit nv_exit(void)
2561{
2562 pci_unregister_driver(&nv_pci_driver);
2563}
2564
2565module_init(nv_init);
2566module_exit(nv_exit);
Robert Hancockfbbb2622006-10-27 19:08:41 -07002567module_param_named(adma, adma_enabled, bool, 0444);
Brandon Ehle55f784c2009-03-01 00:02:49 -08002568MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: false)");
Kuan Luof140f0f2007-10-15 15:16:53 -04002569module_param_named(swncq, swncq_enabled, bool, 0444);
Zoltan Boszormenyid21279f2008-03-28 14:33:46 -07002570MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: true)");
Tony Vroon51c89492009-08-06 00:50:09 +01002571module_param_named(msi, msi_enabled, bool, 0444);
2572MODULE_PARM_DESC(msi, "Enable use of MSI (Default: false)");
Kuan Luof140f0f2007-10-15 15:16:53 -04002573