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1da177e4 LT |
1 | /* |
2 | * sata_nv.c - NVIDIA nForce SATA | |
3 | * | |
4 | * Copyright 2004 NVIDIA Corp. All rights reserved. | |
5 | * Copyright 2004 Andrew Chew | |
6 | * | |
aa7e16d6 JG |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
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. | |
1da177e4 | 21 | * |
af36d7f0 JG |
22 | * |
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 | * | |
fbbb262d RH |
32 | * CK804/MCP04 controllers support an alternate programming interface |
33 | * similar to the ADMA specification (with some modifications). | |
34 | * This allows the use of NCQ. Non-DMA-mapped ATA commands are still | |
35 | * sent through the legacy interface. | |
36 | * | |
1da177e4 LT |
37 | */ |
38 | ||
1da177e4 LT |
39 | #include <linux/kernel.h> |
40 | #include <linux/module.h> | |
41 | #include <linux/pci.h> | |
42 | #include <linux/init.h> | |
43 | #include <linux/blkdev.h> | |
44 | #include <linux/delay.h> | |
45 | #include <linux/interrupt.h> | |
a9524a76 | 46 | #include <linux/device.h> |
1da177e4 | 47 | #include <scsi/scsi_host.h> |
fbbb262d | 48 | #include <scsi/scsi_device.h> |
1da177e4 LT |
49 | #include <linux/libata.h> |
50 | ||
51 | #define DRV_NAME "sata_nv" | |
2a3103ce | 52 | #define DRV_VERSION "3.5" |
fbbb262d RH |
53 | |
54 | #define NV_ADMA_DMA_BOUNDARY 0xffffffffUL | |
1da177e4 | 55 | |
10ad05df | 56 | enum { |
0d5ff566 TH |
57 | NV_MMIO_BAR = 5, |
58 | ||
10ad05df JG |
59 | NV_PORTS = 2, |
60 | NV_PIO_MASK = 0x1f, | |
61 | NV_MWDMA_MASK = 0x07, | |
62 | NV_UDMA_MASK = 0x7f, | |
63 | NV_PORT0_SCR_REG_OFFSET = 0x00, | |
64 | NV_PORT1_SCR_REG_OFFSET = 0x40, | |
1da177e4 | 65 | |
27e4b274 | 66 | /* INT_STATUS/ENABLE */ |
10ad05df | 67 | NV_INT_STATUS = 0x10, |
10ad05df | 68 | NV_INT_ENABLE = 0x11, |
27e4b274 | 69 | NV_INT_STATUS_CK804 = 0x440, |
10ad05df | 70 | NV_INT_ENABLE_CK804 = 0x441, |
1da177e4 | 71 | |
27e4b274 TH |
72 | /* INT_STATUS/ENABLE bits */ |
73 | NV_INT_DEV = 0x01, | |
74 | NV_INT_PM = 0x02, | |
75 | NV_INT_ADDED = 0x04, | |
76 | NV_INT_REMOVED = 0x08, | |
77 | ||
78 | NV_INT_PORT_SHIFT = 4, /* each port occupies 4 bits */ | |
79 | ||
39f87582 | 80 | NV_INT_ALL = 0x0f, |
5a44efff TH |
81 | NV_INT_MASK = NV_INT_DEV | |
82 | NV_INT_ADDED | NV_INT_REMOVED, | |
39f87582 | 83 | |
27e4b274 | 84 | /* INT_CONFIG */ |
10ad05df JG |
85 | NV_INT_CONFIG = 0x12, |
86 | NV_INT_CONFIG_METHD = 0x01, // 0 = INT, 1 = SMI | |
1da177e4 | 87 | |
10ad05df JG |
88 | // For PCI config register 20 |
89 | NV_MCP_SATA_CFG_20 = 0x50, | |
90 | NV_MCP_SATA_CFG_20_SATA_SPACE_EN = 0x04, | |
fbbb262d RH |
91 | NV_MCP_SATA_CFG_20_PORT0_EN = (1 << 17), |
92 | NV_MCP_SATA_CFG_20_PORT1_EN = (1 << 16), | |
93 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN = (1 << 14), | |
94 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN = (1 << 12), | |
95 | ||
96 | NV_ADMA_MAX_CPBS = 32, | |
97 | NV_ADMA_CPB_SZ = 128, | |
98 | NV_ADMA_APRD_SZ = 16, | |
99 | NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) / | |
100 | NV_ADMA_APRD_SZ, | |
101 | NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5, | |
102 | NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ, | |
103 | NV_ADMA_PORT_PRIV_DMA_SZ = NV_ADMA_MAX_CPBS * | |
104 | (NV_ADMA_CPB_SZ + NV_ADMA_SGTBL_SZ), | |
105 | ||
106 | /* BAR5 offset to ADMA general registers */ | |
107 | NV_ADMA_GEN = 0x400, | |
108 | NV_ADMA_GEN_CTL = 0x00, | |
109 | NV_ADMA_NOTIFIER_CLEAR = 0x30, | |
110 | ||
111 | /* BAR5 offset to ADMA ports */ | |
112 | NV_ADMA_PORT = 0x480, | |
113 | ||
114 | /* size of ADMA port register space */ | |
115 | NV_ADMA_PORT_SIZE = 0x100, | |
116 | ||
117 | /* ADMA port registers */ | |
118 | NV_ADMA_CTL = 0x40, | |
119 | NV_ADMA_CPB_COUNT = 0x42, | |
120 | NV_ADMA_NEXT_CPB_IDX = 0x43, | |
121 | NV_ADMA_STAT = 0x44, | |
122 | NV_ADMA_CPB_BASE_LOW = 0x48, | |
123 | NV_ADMA_CPB_BASE_HIGH = 0x4C, | |
124 | NV_ADMA_APPEND = 0x50, | |
125 | NV_ADMA_NOTIFIER = 0x68, | |
126 | NV_ADMA_NOTIFIER_ERROR = 0x6C, | |
127 | ||
128 | /* NV_ADMA_CTL register bits */ | |
129 | NV_ADMA_CTL_HOTPLUG_IEN = (1 << 0), | |
130 | NV_ADMA_CTL_CHANNEL_RESET = (1 << 5), | |
131 | NV_ADMA_CTL_GO = (1 << 7), | |
132 | NV_ADMA_CTL_AIEN = (1 << 8), | |
133 | NV_ADMA_CTL_READ_NON_COHERENT = (1 << 11), | |
134 | NV_ADMA_CTL_WRITE_NON_COHERENT = (1 << 12), | |
135 | ||
136 | /* CPB response flag bits */ | |
137 | NV_CPB_RESP_DONE = (1 << 0), | |
138 | NV_CPB_RESP_ATA_ERR = (1 << 3), | |
139 | NV_CPB_RESP_CMD_ERR = (1 << 4), | |
140 | NV_CPB_RESP_CPB_ERR = (1 << 7), | |
141 | ||
142 | /* CPB control flag bits */ | |
143 | NV_CPB_CTL_CPB_VALID = (1 << 0), | |
144 | NV_CPB_CTL_QUEUE = (1 << 1), | |
145 | NV_CPB_CTL_APRD_VALID = (1 << 2), | |
146 | NV_CPB_CTL_IEN = (1 << 3), | |
147 | NV_CPB_CTL_FPDMA = (1 << 4), | |
148 | ||
149 | /* APRD flags */ | |
150 | NV_APRD_WRITE = (1 << 1), | |
151 | NV_APRD_END = (1 << 2), | |
152 | NV_APRD_CONT = (1 << 3), | |
153 | ||
154 | /* NV_ADMA_STAT flags */ | |
155 | NV_ADMA_STAT_TIMEOUT = (1 << 0), | |
156 | NV_ADMA_STAT_HOTUNPLUG = (1 << 1), | |
157 | NV_ADMA_STAT_HOTPLUG = (1 << 2), | |
158 | NV_ADMA_STAT_CPBERR = (1 << 4), | |
159 | NV_ADMA_STAT_SERROR = (1 << 5), | |
160 | NV_ADMA_STAT_CMD_COMPLETE = (1 << 6), | |
161 | NV_ADMA_STAT_IDLE = (1 << 8), | |
162 | NV_ADMA_STAT_LEGACY = (1 << 9), | |
163 | NV_ADMA_STAT_STOPPED = (1 << 10), | |
164 | NV_ADMA_STAT_DONE = (1 << 12), | |
165 | NV_ADMA_STAT_ERR = NV_ADMA_STAT_CPBERR | | |
2dcb407e | 166 | NV_ADMA_STAT_TIMEOUT, |
fbbb262d RH |
167 | |
168 | /* port flags */ | |
169 | NV_ADMA_PORT_REGISTER_MODE = (1 << 0), | |
2dec7555 | 170 | NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1), |
fbbb262d | 171 | |
f140f0f1 KL |
172 | /* MCP55 reg offset */ |
173 | NV_CTL_MCP55 = 0x400, | |
174 | NV_INT_STATUS_MCP55 = 0x440, | |
175 | NV_INT_ENABLE_MCP55 = 0x444, | |
176 | NV_NCQ_REG_MCP55 = 0x448, | |
177 | ||
178 | /* MCP55 */ | |
179 | NV_INT_ALL_MCP55 = 0xffff, | |
180 | NV_INT_PORT_SHIFT_MCP55 = 16, /* each port occupies 16 bits */ | |
181 | NV_INT_MASK_MCP55 = NV_INT_ALL_MCP55 & 0xfffd, | |
182 | ||
183 | /* SWNCQ ENABLE BITS*/ | |
184 | NV_CTL_PRI_SWNCQ = 0x02, | |
185 | NV_CTL_SEC_SWNCQ = 0x04, | |
186 | ||
187 | /* SW NCQ status bits*/ | |
188 | NV_SWNCQ_IRQ_DEV = (1 << 0), | |
189 | NV_SWNCQ_IRQ_PM = (1 << 1), | |
190 | NV_SWNCQ_IRQ_ADDED = (1 << 2), | |
191 | NV_SWNCQ_IRQ_REMOVED = (1 << 3), | |
192 | ||
193 | NV_SWNCQ_IRQ_BACKOUT = (1 << 4), | |
194 | NV_SWNCQ_IRQ_SDBFIS = (1 << 5), | |
195 | NV_SWNCQ_IRQ_DHREGFIS = (1 << 6), | |
196 | NV_SWNCQ_IRQ_DMASETUP = (1 << 7), | |
197 | ||
198 | NV_SWNCQ_IRQ_HOTPLUG = NV_SWNCQ_IRQ_ADDED | | |
199 | NV_SWNCQ_IRQ_REMOVED, | |
200 | ||
fbbb262d RH |
201 | }; |
202 | ||
203 | /* ADMA Physical Region Descriptor - one SG segment */ | |
204 | struct nv_adma_prd { | |
205 | __le64 addr; | |
206 | __le32 len; | |
207 | u8 flags; | |
208 | u8 packet_len; | |
209 | __le16 reserved; | |
210 | }; | |
211 | ||
212 | enum nv_adma_regbits { | |
213 | CMDEND = (1 << 15), /* end of command list */ | |
214 | WNB = (1 << 14), /* wait-not-BSY */ | |
215 | IGN = (1 << 13), /* ignore this entry */ | |
216 | CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */ | |
217 | DA2 = (1 << (2 + 8)), | |
218 | DA1 = (1 << (1 + 8)), | |
219 | DA0 = (1 << (0 + 8)), | |
220 | }; | |
221 | ||
222 | /* ADMA Command Parameter Block | |
223 | The first 5 SG segments are stored inside the Command Parameter Block itself. | |
224 | If there are more than 5 segments the remainder are stored in a separate | |
225 | memory area indicated by next_aprd. */ | |
226 | struct nv_adma_cpb { | |
227 | u8 resp_flags; /* 0 */ | |
228 | u8 reserved1; /* 1 */ | |
229 | u8 ctl_flags; /* 2 */ | |
230 | /* len is length of taskfile in 64 bit words */ | |
2dcb407e | 231 | u8 len; /* 3 */ |
fbbb262d RH |
232 | u8 tag; /* 4 */ |
233 | u8 next_cpb_idx; /* 5 */ | |
234 | __le16 reserved2; /* 6-7 */ | |
235 | __le16 tf[12]; /* 8-31 */ | |
236 | struct nv_adma_prd aprd[5]; /* 32-111 */ | |
237 | __le64 next_aprd; /* 112-119 */ | |
238 | __le64 reserved3; /* 120-127 */ | |
10ad05df | 239 | }; |
1da177e4 | 240 | |
fbbb262d RH |
241 | |
242 | struct nv_adma_port_priv { | |
243 | struct nv_adma_cpb *cpb; | |
244 | dma_addr_t cpb_dma; | |
245 | struct nv_adma_prd *aprd; | |
246 | dma_addr_t aprd_dma; | |
2dcb407e JG |
247 | void __iomem *ctl_block; |
248 | void __iomem *gen_block; | |
249 | void __iomem *notifier_clear_block; | |
fbbb262d | 250 | u8 flags; |
5e5c74a5 | 251 | int last_issue_ncq; |
fbbb262d RH |
252 | }; |
253 | ||
cdf56bcf RH |
254 | struct nv_host_priv { |
255 | unsigned long type; | |
256 | }; | |
257 | ||
f140f0f1 KL |
258 | struct defer_queue { |
259 | u32 defer_bits; | |
260 | unsigned int head; | |
261 | unsigned int tail; | |
262 | unsigned int tag[ATA_MAX_QUEUE]; | |
263 | }; | |
264 | ||
265 | enum ncq_saw_flag_list { | |
266 | ncq_saw_d2h = (1U << 0), | |
267 | ncq_saw_dmas = (1U << 1), | |
268 | ncq_saw_sdb = (1U << 2), | |
269 | ncq_saw_backout = (1U << 3), | |
270 | }; | |
271 | ||
272 | struct nv_swncq_port_priv { | |
273 | struct ata_prd *prd; /* our SG list */ | |
274 | dma_addr_t prd_dma; /* and its DMA mapping */ | |
275 | void __iomem *sactive_block; | |
276 | void __iomem *irq_block; | |
277 | void __iomem *tag_block; | |
278 | u32 qc_active; | |
279 | ||
280 | unsigned int last_issue_tag; | |
281 | ||
282 | /* fifo circular queue to store deferral command */ | |
283 | struct defer_queue defer_queue; | |
284 | ||
285 | /* for NCQ interrupt analysis */ | |
286 | u32 dhfis_bits; | |
287 | u32 dmafis_bits; | |
288 | u32 sdbfis_bits; | |
289 | ||
290 | unsigned int ncq_flags; | |
291 | }; | |
292 | ||
293 | ||
5796d1c4 | 294 | #define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & (1 << (19 + (12 * (PORT))))) |
fbbb262d | 295 | |
2dcb407e | 296 | static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); |
438ac6d5 | 297 | #ifdef CONFIG_PM |
cdf56bcf | 298 | static int nv_pci_device_resume(struct pci_dev *pdev); |
438ac6d5 | 299 | #endif |
cca3974e | 300 | static void nv_ck804_host_stop(struct ata_host *host); |
7d12e780 DH |
301 | static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance); |
302 | static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance); | |
303 | static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance); | |
2dcb407e JG |
304 | static int nv_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val); |
305 | static int nv_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val); | |
1da177e4 | 306 | |
39f87582 TH |
307 | static void nv_nf2_freeze(struct ata_port *ap); |
308 | static void nv_nf2_thaw(struct ata_port *ap); | |
309 | static void nv_ck804_freeze(struct ata_port *ap); | |
310 | static void nv_ck804_thaw(struct ata_port *ap); | |
311 | static void nv_error_handler(struct ata_port *ap); | |
fbbb262d | 312 | static int nv_adma_slave_config(struct scsi_device *sdev); |
2dec7555 | 313 | static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc); |
fbbb262d RH |
314 | static void nv_adma_qc_prep(struct ata_queued_cmd *qc); |
315 | static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc); | |
316 | static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance); | |
317 | static void nv_adma_irq_clear(struct ata_port *ap); | |
318 | static int nv_adma_port_start(struct ata_port *ap); | |
319 | static void nv_adma_port_stop(struct ata_port *ap); | |
438ac6d5 | 320 | #ifdef CONFIG_PM |
cdf56bcf RH |
321 | static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg); |
322 | static int nv_adma_port_resume(struct ata_port *ap); | |
438ac6d5 | 323 | #endif |
53014e25 RH |
324 | static void nv_adma_freeze(struct ata_port *ap); |
325 | static void nv_adma_thaw(struct ata_port *ap); | |
fbbb262d RH |
326 | static void nv_adma_error_handler(struct ata_port *ap); |
327 | static void nv_adma_host_stop(struct ata_host *host); | |
f5ecac2d | 328 | static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc); |
f2fb344b | 329 | static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf); |
39f87582 | 330 | |
f140f0f1 KL |
331 | static void nv_mcp55_thaw(struct ata_port *ap); |
332 | static void nv_mcp55_freeze(struct ata_port *ap); | |
333 | static void nv_swncq_error_handler(struct ata_port *ap); | |
334 | static int nv_swncq_slave_config(struct scsi_device *sdev); | |
335 | static int nv_swncq_port_start(struct ata_port *ap); | |
336 | static void nv_swncq_qc_prep(struct ata_queued_cmd *qc); | |
337 | static void nv_swncq_fill_sg(struct ata_queued_cmd *qc); | |
338 | static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc); | |
339 | static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis); | |
340 | static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance); | |
341 | #ifdef CONFIG_PM | |
342 | static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg); | |
343 | static int nv_swncq_port_resume(struct ata_port *ap); | |
344 | #endif | |
345 | ||
1da177e4 LT |
346 | enum nv_host_type |
347 | { | |
348 | GENERIC, | |
349 | NFORCE2, | |
27e4b274 | 350 | NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */ |
fbbb262d | 351 | CK804, |
f140f0f1 KL |
352 | ADMA, |
353 | SWNCQ, | |
1da177e4 LT |
354 | }; |
355 | ||
3b7d697d | 356 | static const struct pci_device_id nv_pci_tbl[] = { |
54bb3a94 JG |
357 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 }, |
358 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 }, | |
359 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 }, | |
360 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 }, | |
361 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 }, | |
362 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 }, | |
363 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 }, | |
f140f0f1 KL |
364 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), SWNCQ }, |
365 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), SWNCQ }, | |
366 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), SWNCQ }, | |
367 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), SWNCQ }, | |
e2e031eb KL |
368 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC }, |
369 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC }, | |
370 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC }, | |
2d2744fc JG |
371 | |
372 | { } /* terminate list */ | |
1da177e4 LT |
373 | }; |
374 | ||
1da177e4 LT |
375 | static struct pci_driver nv_pci_driver = { |
376 | .name = DRV_NAME, | |
377 | .id_table = nv_pci_tbl, | |
378 | .probe = nv_init_one, | |
438ac6d5 | 379 | #ifdef CONFIG_PM |
cdf56bcf RH |
380 | .suspend = ata_pci_device_suspend, |
381 | .resume = nv_pci_device_resume, | |
438ac6d5 | 382 | #endif |
1daf9ce7 | 383 | .remove = ata_pci_remove_one, |
1da177e4 LT |
384 | }; |
385 | ||
193515d5 | 386 | static struct scsi_host_template nv_sht = { |
1da177e4 LT |
387 | .module = THIS_MODULE, |
388 | .name = DRV_NAME, | |
389 | .ioctl = ata_scsi_ioctl, | |
390 | .queuecommand = ata_scsi_queuecmd, | |
1da177e4 LT |
391 | .can_queue = ATA_DEF_QUEUE, |
392 | .this_id = ATA_SHT_THIS_ID, | |
393 | .sg_tablesize = LIBATA_MAX_PRD, | |
1da177e4 LT |
394 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
395 | .emulated = ATA_SHT_EMULATED, | |
396 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
397 | .proc_name = DRV_NAME, | |
398 | .dma_boundary = ATA_DMA_BOUNDARY, | |
399 | .slave_configure = ata_scsi_slave_config, | |
ccf68c34 | 400 | .slave_destroy = ata_scsi_slave_destroy, |
1da177e4 | 401 | .bios_param = ata_std_bios_param, |
1da177e4 LT |
402 | }; |
403 | ||
fbbb262d RH |
404 | static struct scsi_host_template nv_adma_sht = { |
405 | .module = THIS_MODULE, | |
406 | .name = DRV_NAME, | |
407 | .ioctl = ata_scsi_ioctl, | |
408 | .queuecommand = ata_scsi_queuecmd, | |
1e0b5ab8 | 409 | .change_queue_depth = ata_scsi_change_queue_depth, |
fbbb262d RH |
410 | .can_queue = NV_ADMA_MAX_CPBS, |
411 | .this_id = ATA_SHT_THIS_ID, | |
412 | .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN, | |
fbbb262d RH |
413 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
414 | .emulated = ATA_SHT_EMULATED, | |
415 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
416 | .proc_name = DRV_NAME, | |
417 | .dma_boundary = NV_ADMA_DMA_BOUNDARY, | |
418 | .slave_configure = nv_adma_slave_config, | |
419 | .slave_destroy = ata_scsi_slave_destroy, | |
420 | .bios_param = ata_std_bios_param, | |
421 | }; | |
422 | ||
f140f0f1 KL |
423 | static struct scsi_host_template nv_swncq_sht = { |
424 | .module = THIS_MODULE, | |
425 | .name = DRV_NAME, | |
426 | .ioctl = ata_scsi_ioctl, | |
427 | .queuecommand = ata_scsi_queuecmd, | |
428 | .change_queue_depth = ata_scsi_change_queue_depth, | |
429 | .can_queue = ATA_MAX_QUEUE, | |
430 | .this_id = ATA_SHT_THIS_ID, | |
431 | .sg_tablesize = LIBATA_MAX_PRD, | |
432 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, | |
433 | .emulated = ATA_SHT_EMULATED, | |
434 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
435 | .proc_name = DRV_NAME, | |
436 | .dma_boundary = ATA_DMA_BOUNDARY, | |
437 | .slave_configure = nv_swncq_slave_config, | |
438 | .slave_destroy = ata_scsi_slave_destroy, | |
439 | .bios_param = ata_std_bios_param, | |
440 | }; | |
441 | ||
ada364e8 | 442 | static const struct ata_port_operations nv_generic_ops = { |
1da177e4 LT |
443 | .tf_load = ata_tf_load, |
444 | .tf_read = ata_tf_read, | |
445 | .exec_command = ata_exec_command, | |
446 | .check_status = ata_check_status, | |
447 | .dev_select = ata_std_dev_select, | |
1da177e4 LT |
448 | .bmdma_setup = ata_bmdma_setup, |
449 | .bmdma_start = ata_bmdma_start, | |
450 | .bmdma_stop = ata_bmdma_stop, | |
451 | .bmdma_status = ata_bmdma_status, | |
452 | .qc_prep = ata_qc_prep, | |
453 | .qc_issue = ata_qc_issue_prot, | |
39f87582 TH |
454 | .freeze = ata_bmdma_freeze, |
455 | .thaw = ata_bmdma_thaw, | |
456 | .error_handler = nv_error_handler, | |
457 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
0d5ff566 | 458 | .data_xfer = ata_data_xfer, |
1da177e4 | 459 | .irq_clear = ata_bmdma_irq_clear, |
246ce3b6 | 460 | .irq_on = ata_irq_on, |
1da177e4 LT |
461 | .scr_read = nv_scr_read, |
462 | .scr_write = nv_scr_write, | |
463 | .port_start = ata_port_start, | |
1da177e4 LT |
464 | }; |
465 | ||
ada364e8 | 466 | static const struct ata_port_operations nv_nf2_ops = { |
ada364e8 TH |
467 | .tf_load = ata_tf_load, |
468 | .tf_read = ata_tf_read, | |
469 | .exec_command = ata_exec_command, | |
470 | .check_status = ata_check_status, | |
471 | .dev_select = ata_std_dev_select, | |
ada364e8 TH |
472 | .bmdma_setup = ata_bmdma_setup, |
473 | .bmdma_start = ata_bmdma_start, | |
474 | .bmdma_stop = ata_bmdma_stop, | |
475 | .bmdma_status = ata_bmdma_status, | |
476 | .qc_prep = ata_qc_prep, | |
477 | .qc_issue = ata_qc_issue_prot, | |
39f87582 TH |
478 | .freeze = nv_nf2_freeze, |
479 | .thaw = nv_nf2_thaw, | |
480 | .error_handler = nv_error_handler, | |
481 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
0d5ff566 | 482 | .data_xfer = ata_data_xfer, |
ada364e8 | 483 | .irq_clear = ata_bmdma_irq_clear, |
246ce3b6 | 484 | .irq_on = ata_irq_on, |
ada364e8 TH |
485 | .scr_read = nv_scr_read, |
486 | .scr_write = nv_scr_write, | |
487 | .port_start = ata_port_start, | |
ada364e8 TH |
488 | }; |
489 | ||
490 | static const struct ata_port_operations nv_ck804_ops = { | |
ada364e8 TH |
491 | .tf_load = ata_tf_load, |
492 | .tf_read = ata_tf_read, | |
493 | .exec_command = ata_exec_command, | |
494 | .check_status = ata_check_status, | |
495 | .dev_select = ata_std_dev_select, | |
ada364e8 TH |
496 | .bmdma_setup = ata_bmdma_setup, |
497 | .bmdma_start = ata_bmdma_start, | |
498 | .bmdma_stop = ata_bmdma_stop, | |
499 | .bmdma_status = ata_bmdma_status, | |
500 | .qc_prep = ata_qc_prep, | |
501 | .qc_issue = ata_qc_issue_prot, | |
39f87582 TH |
502 | .freeze = nv_ck804_freeze, |
503 | .thaw = nv_ck804_thaw, | |
504 | .error_handler = nv_error_handler, | |
505 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
0d5ff566 | 506 | .data_xfer = ata_data_xfer, |
ada364e8 | 507 | .irq_clear = ata_bmdma_irq_clear, |
246ce3b6 | 508 | .irq_on = ata_irq_on, |
ada364e8 TH |
509 | .scr_read = nv_scr_read, |
510 | .scr_write = nv_scr_write, | |
511 | .port_start = ata_port_start, | |
ada364e8 TH |
512 | .host_stop = nv_ck804_host_stop, |
513 | }; | |
514 | ||
fbbb262d | 515 | static const struct ata_port_operations nv_adma_ops = { |
fbbb262d | 516 | .tf_load = ata_tf_load, |
f2fb344b | 517 | .tf_read = nv_adma_tf_read, |
2dec7555 | 518 | .check_atapi_dma = nv_adma_check_atapi_dma, |
fbbb262d RH |
519 | .exec_command = ata_exec_command, |
520 | .check_status = ata_check_status, | |
521 | .dev_select = ata_std_dev_select, | |
f5ecac2d RH |
522 | .bmdma_setup = ata_bmdma_setup, |
523 | .bmdma_start = ata_bmdma_start, | |
524 | .bmdma_stop = ata_bmdma_stop, | |
525 | .bmdma_status = ata_bmdma_status, | |
31cc23b3 | 526 | .qc_defer = ata_std_qc_defer, |
fbbb262d RH |
527 | .qc_prep = nv_adma_qc_prep, |
528 | .qc_issue = nv_adma_qc_issue, | |
53014e25 RH |
529 | .freeze = nv_adma_freeze, |
530 | .thaw = nv_adma_thaw, | |
fbbb262d | 531 | .error_handler = nv_adma_error_handler, |
f5ecac2d | 532 | .post_internal_cmd = nv_adma_post_internal_cmd, |
0d5ff566 | 533 | .data_xfer = ata_data_xfer, |
fbbb262d | 534 | .irq_clear = nv_adma_irq_clear, |
246ce3b6 | 535 | .irq_on = ata_irq_on, |
fbbb262d RH |
536 | .scr_read = nv_scr_read, |
537 | .scr_write = nv_scr_write, | |
538 | .port_start = nv_adma_port_start, | |
539 | .port_stop = nv_adma_port_stop, | |
438ac6d5 | 540 | #ifdef CONFIG_PM |
cdf56bcf RH |
541 | .port_suspend = nv_adma_port_suspend, |
542 | .port_resume = nv_adma_port_resume, | |
438ac6d5 | 543 | #endif |
fbbb262d RH |
544 | .host_stop = nv_adma_host_stop, |
545 | }; | |
546 | ||
f140f0f1 KL |
547 | static const struct ata_port_operations nv_swncq_ops = { |
548 | .tf_load = ata_tf_load, | |
549 | .tf_read = ata_tf_read, | |
550 | .exec_command = ata_exec_command, | |
551 | .check_status = ata_check_status, | |
552 | .dev_select = ata_std_dev_select, | |
553 | .bmdma_setup = ata_bmdma_setup, | |
554 | .bmdma_start = ata_bmdma_start, | |
555 | .bmdma_stop = ata_bmdma_stop, | |
556 | .bmdma_status = ata_bmdma_status, | |
557 | .qc_defer = ata_std_qc_defer, | |
558 | .qc_prep = nv_swncq_qc_prep, | |
559 | .qc_issue = nv_swncq_qc_issue, | |
560 | .freeze = nv_mcp55_freeze, | |
561 | .thaw = nv_mcp55_thaw, | |
562 | .error_handler = nv_swncq_error_handler, | |
563 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
564 | .data_xfer = ata_data_xfer, | |
565 | .irq_clear = ata_bmdma_irq_clear, | |
566 | .irq_on = ata_irq_on, | |
567 | .scr_read = nv_scr_read, | |
568 | .scr_write = nv_scr_write, | |
569 | #ifdef CONFIG_PM | |
570 | .port_suspend = nv_swncq_port_suspend, | |
571 | .port_resume = nv_swncq_port_resume, | |
572 | #endif | |
573 | .port_start = nv_swncq_port_start, | |
574 | }; | |
575 | ||
1626aeb8 | 576 | static const struct ata_port_info nv_port_info[] = { |
ada364e8 TH |
577 | /* generic */ |
578 | { | |
579 | .sht = &nv_sht, | |
0c88758b TH |
580 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY, |
581 | .link_flags = ATA_LFLAG_HRST_TO_RESUME, | |
ada364e8 TH |
582 | .pio_mask = NV_PIO_MASK, |
583 | .mwdma_mask = NV_MWDMA_MASK, | |
584 | .udma_mask = NV_UDMA_MASK, | |
585 | .port_ops = &nv_generic_ops, | |
9a829ccf | 586 | .irq_handler = nv_generic_interrupt, |
ada364e8 TH |
587 | }, |
588 | /* nforce2/3 */ | |
589 | { | |
590 | .sht = &nv_sht, | |
0c88758b TH |
591 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY, |
592 | .link_flags = ATA_LFLAG_HRST_TO_RESUME, | |
ada364e8 TH |
593 | .pio_mask = NV_PIO_MASK, |
594 | .mwdma_mask = NV_MWDMA_MASK, | |
595 | .udma_mask = NV_UDMA_MASK, | |
596 | .port_ops = &nv_nf2_ops, | |
9a829ccf | 597 | .irq_handler = nv_nf2_interrupt, |
ada364e8 TH |
598 | }, |
599 | /* ck804 */ | |
600 | { | |
601 | .sht = &nv_sht, | |
0c88758b TH |
602 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY, |
603 | .link_flags = ATA_LFLAG_HRST_TO_RESUME, | |
ada364e8 TH |
604 | .pio_mask = NV_PIO_MASK, |
605 | .mwdma_mask = NV_MWDMA_MASK, | |
606 | .udma_mask = NV_UDMA_MASK, | |
607 | .port_ops = &nv_ck804_ops, | |
9a829ccf | 608 | .irq_handler = nv_ck804_interrupt, |
ada364e8 | 609 | }, |
fbbb262d RH |
610 | /* ADMA */ |
611 | { | |
612 | .sht = &nv_adma_sht, | |
613 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | | |
614 | ATA_FLAG_MMIO | ATA_FLAG_NCQ, | |
0c88758b | 615 | .link_flags = ATA_LFLAG_HRST_TO_RESUME, |
fbbb262d RH |
616 | .pio_mask = NV_PIO_MASK, |
617 | .mwdma_mask = NV_MWDMA_MASK, | |
618 | .udma_mask = NV_UDMA_MASK, | |
619 | .port_ops = &nv_adma_ops, | |
9a829ccf | 620 | .irq_handler = nv_adma_interrupt, |
fbbb262d | 621 | }, |
f140f0f1 KL |
622 | /* SWNCQ */ |
623 | { | |
624 | .sht = &nv_swncq_sht, | |
625 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | | |
626 | ATA_FLAG_NCQ, | |
627 | .link_flags = ATA_LFLAG_HRST_TO_RESUME, | |
628 | .pio_mask = NV_PIO_MASK, | |
629 | .mwdma_mask = NV_MWDMA_MASK, | |
630 | .udma_mask = NV_UDMA_MASK, | |
631 | .port_ops = &nv_swncq_ops, | |
632 | .irq_handler = nv_swncq_interrupt, | |
633 | }, | |
1da177e4 LT |
634 | }; |
635 | ||
636 | MODULE_AUTHOR("NVIDIA"); | |
637 | MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller"); | |
638 | MODULE_LICENSE("GPL"); | |
639 | MODULE_DEVICE_TABLE(pci, nv_pci_tbl); | |
640 | MODULE_VERSION(DRV_VERSION); | |
641 | ||
fbbb262d | 642 | static int adma_enabled = 1; |
f140f0f1 | 643 | static int swncq_enabled; |
fbbb262d | 644 | |
2dec7555 RH |
645 | static void nv_adma_register_mode(struct ata_port *ap) |
646 | { | |
2dec7555 | 647 | struct nv_adma_port_priv *pp = ap->private_data; |
cdf56bcf | 648 | void __iomem *mmio = pp->ctl_block; |
a2cfe81a RH |
649 | u16 tmp, status; |
650 | int count = 0; | |
2dec7555 RH |
651 | |
652 | if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) | |
653 | return; | |
654 | ||
a2cfe81a | 655 | status = readw(mmio + NV_ADMA_STAT); |
2dcb407e | 656 | while (!(status & NV_ADMA_STAT_IDLE) && count < 20) { |
a2cfe81a RH |
657 | ndelay(50); |
658 | status = readw(mmio + NV_ADMA_STAT); | |
659 | count++; | |
660 | } | |
2dcb407e | 661 | if (count == 20) |
a2cfe81a RH |
662 | ata_port_printk(ap, KERN_WARNING, |
663 | "timeout waiting for ADMA IDLE, stat=0x%hx\n", | |
664 | status); | |
665 | ||
2dec7555 RH |
666 | tmp = readw(mmio + NV_ADMA_CTL); |
667 | writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL); | |
668 | ||
a2cfe81a RH |
669 | count = 0; |
670 | status = readw(mmio + NV_ADMA_STAT); | |
2dcb407e | 671 | while (!(status & NV_ADMA_STAT_LEGACY) && count < 20) { |
a2cfe81a RH |
672 | ndelay(50); |
673 | status = readw(mmio + NV_ADMA_STAT); | |
674 | count++; | |
675 | } | |
2dcb407e | 676 | if (count == 20) |
a2cfe81a RH |
677 | ata_port_printk(ap, KERN_WARNING, |
678 | "timeout waiting for ADMA LEGACY, stat=0x%hx\n", | |
679 | status); | |
680 | ||
2dec7555 RH |
681 | pp->flags |= NV_ADMA_PORT_REGISTER_MODE; |
682 | } | |
683 | ||
684 | static void nv_adma_mode(struct ata_port *ap) | |
685 | { | |
2dec7555 | 686 | struct nv_adma_port_priv *pp = ap->private_data; |
cdf56bcf | 687 | void __iomem *mmio = pp->ctl_block; |
a2cfe81a RH |
688 | u16 tmp, status; |
689 | int count = 0; | |
2dec7555 RH |
690 | |
691 | if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) | |
692 | return; | |
f20b16ff | 693 | |
2dec7555 RH |
694 | WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE); |
695 | ||
696 | tmp = readw(mmio + NV_ADMA_CTL); | |
697 | writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL); | |
698 | ||
a2cfe81a | 699 | status = readw(mmio + NV_ADMA_STAT); |
2dcb407e | 700 | while (((status & NV_ADMA_STAT_LEGACY) || |
a2cfe81a RH |
701 | !(status & NV_ADMA_STAT_IDLE)) && count < 20) { |
702 | ndelay(50); | |
703 | status = readw(mmio + NV_ADMA_STAT); | |
704 | count++; | |
705 | } | |
2dcb407e | 706 | if (count == 20) |
a2cfe81a RH |
707 | ata_port_printk(ap, KERN_WARNING, |
708 | "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n", | |
709 | status); | |
710 | ||
2dec7555 RH |
711 | pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE; |
712 | } | |
713 | ||
fbbb262d RH |
714 | static int nv_adma_slave_config(struct scsi_device *sdev) |
715 | { | |
716 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
2dec7555 RH |
717 | struct nv_adma_port_priv *pp = ap->private_data; |
718 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
fbbb262d RH |
719 | u64 bounce_limit; |
720 | unsigned long segment_boundary; | |
721 | unsigned short sg_tablesize; | |
722 | int rc; | |
2dec7555 RH |
723 | int adma_enable; |
724 | u32 current_reg, new_reg, config_mask; | |
fbbb262d RH |
725 | |
726 | rc = ata_scsi_slave_config(sdev); | |
727 | ||
728 | if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun) | |
729 | /* Not a proper libata device, ignore */ | |
730 | return rc; | |
731 | ||
9af5c9c9 | 732 | if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) { |
fbbb262d RH |
733 | /* |
734 | * NVIDIA reports that ADMA mode does not support ATAPI commands. | |
735 | * Therefore ATAPI commands are sent through the legacy interface. | |
736 | * However, the legacy interface only supports 32-bit DMA. | |
737 | * Restrict DMA parameters as required by the legacy interface | |
738 | * when an ATAPI device is connected. | |
739 | */ | |
740 | bounce_limit = ATA_DMA_MASK; | |
741 | segment_boundary = ATA_DMA_BOUNDARY; | |
742 | /* Subtract 1 since an extra entry may be needed for padding, see | |
743 | libata-scsi.c */ | |
744 | sg_tablesize = LIBATA_MAX_PRD - 1; | |
f20b16ff | 745 | |
2dec7555 RH |
746 | /* Since the legacy DMA engine is in use, we need to disable ADMA |
747 | on the port. */ | |
748 | adma_enable = 0; | |
749 | nv_adma_register_mode(ap); | |
2dcb407e | 750 | } else { |
fbbb262d RH |
751 | bounce_limit = *ap->dev->dma_mask; |
752 | segment_boundary = NV_ADMA_DMA_BOUNDARY; | |
753 | sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN; | |
2dec7555 | 754 | adma_enable = 1; |
fbbb262d | 755 | } |
f20b16ff | 756 | |
2dec7555 RH |
757 | pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, ¤t_reg); |
758 | ||
2dcb407e | 759 | if (ap->port_no == 1) |
2dec7555 RH |
760 | config_mask = NV_MCP_SATA_CFG_20_PORT1_EN | |
761 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN; | |
762 | else | |
763 | config_mask = NV_MCP_SATA_CFG_20_PORT0_EN | | |
764 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN; | |
f20b16ff | 765 | |
2dcb407e | 766 | if (adma_enable) { |
2dec7555 RH |
767 | new_reg = current_reg | config_mask; |
768 | pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE; | |
2dcb407e | 769 | } else { |
2dec7555 RH |
770 | new_reg = current_reg & ~config_mask; |
771 | pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE; | |
772 | } | |
f20b16ff | 773 | |
2dcb407e | 774 | if (current_reg != new_reg) |
2dec7555 | 775 | pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg); |
f20b16ff | 776 | |
fbbb262d RH |
777 | blk_queue_bounce_limit(sdev->request_queue, bounce_limit); |
778 | blk_queue_segment_boundary(sdev->request_queue, segment_boundary); | |
779 | blk_queue_max_hw_segments(sdev->request_queue, sg_tablesize); | |
780 | ata_port_printk(ap, KERN_INFO, | |
781 | "bounce limit 0x%llX, segment boundary 0x%lX, hw segs %hu\n", | |
782 | (unsigned long long)bounce_limit, segment_boundary, sg_tablesize); | |
783 | return rc; | |
784 | } | |
785 | ||
2dec7555 RH |
786 | static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc) |
787 | { | |
788 | struct nv_adma_port_priv *pp = qc->ap->private_data; | |
789 | return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE); | |
790 | } | |
791 | ||
f2fb344b RH |
792 | static void nv_adma_tf_read(struct ata_port *ap, struct ata_taskfile *tf) |
793 | { | |
794 | /* Since commands where a result TF is requested are not | |
795 | executed in ADMA mode, the only time this function will be called | |
796 | in ADMA mode will be if a command fails. In this case we | |
797 | don't care about going into register mode with ADMA commands | |
798 | pending, as the commands will all shortly be aborted anyway. */ | |
799 | nv_adma_register_mode(ap); | |
800 | ||
801 | ata_tf_read(ap, tf); | |
802 | } | |
803 | ||
2dec7555 | 804 | static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb) |
fbbb262d RH |
805 | { |
806 | unsigned int idx = 0; | |
807 | ||
2dcb407e | 808 | if (tf->flags & ATA_TFLAG_ISADDR) { |
ac3d6b86 RH |
809 | if (tf->flags & ATA_TFLAG_LBA48) { |
810 | cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature | WNB); | |
811 | cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect); | |
812 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal); | |
813 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam); | |
814 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah); | |
815 | cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature); | |
816 | } else | |
817 | cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature | WNB); | |
a84471fe | 818 | |
ac3d6b86 RH |
819 | cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect); |
820 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal); | |
821 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam); | |
822 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah); | |
fbbb262d | 823 | } |
a84471fe | 824 | |
2dcb407e | 825 | if (tf->flags & ATA_TFLAG_DEVICE) |
ac3d6b86 | 826 | cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device); |
fbbb262d RH |
827 | |
828 | cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND); | |
a84471fe | 829 | |
2dcb407e | 830 | while (idx < 12) |
ac3d6b86 | 831 | cpb[idx++] = cpu_to_le16(IGN); |
fbbb262d RH |
832 | |
833 | return idx; | |
834 | } | |
835 | ||
5bd28a4b | 836 | static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err) |
fbbb262d RH |
837 | { |
838 | struct nv_adma_port_priv *pp = ap->private_data; | |
2dec7555 | 839 | u8 flags = pp->cpb[cpb_num].resp_flags; |
fbbb262d RH |
840 | |
841 | VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags); | |
842 | ||
5bd28a4b RH |
843 | if (unlikely((force_err || |
844 | flags & (NV_CPB_RESP_ATA_ERR | | |
845 | NV_CPB_RESP_CMD_ERR | | |
846 | NV_CPB_RESP_CPB_ERR)))) { | |
9af5c9c9 | 847 | struct ata_eh_info *ehi = &ap->link.eh_info; |
5bd28a4b RH |
848 | int freeze = 0; |
849 | ||
850 | ata_ehi_clear_desc(ehi); | |
2dcb407e | 851 | __ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags); |
5bd28a4b | 852 | if (flags & NV_CPB_RESP_ATA_ERR) { |
b64bbc39 | 853 | ata_ehi_push_desc(ehi, "ATA error"); |
5bd28a4b RH |
854 | ehi->err_mask |= AC_ERR_DEV; |
855 | } else if (flags & NV_CPB_RESP_CMD_ERR) { | |
b64bbc39 | 856 | ata_ehi_push_desc(ehi, "CMD error"); |
5bd28a4b RH |
857 | ehi->err_mask |= AC_ERR_DEV; |
858 | } else if (flags & NV_CPB_RESP_CPB_ERR) { | |
b64bbc39 | 859 | ata_ehi_push_desc(ehi, "CPB error"); |
5bd28a4b RH |
860 | ehi->err_mask |= AC_ERR_SYSTEM; |
861 | freeze = 1; | |
862 | } else { | |
863 | /* notifier error, but no error in CPB flags? */ | |
b64bbc39 | 864 | ata_ehi_push_desc(ehi, "unknown"); |
5bd28a4b RH |
865 | ehi->err_mask |= AC_ERR_OTHER; |
866 | freeze = 1; | |
867 | } | |
868 | /* Kill all commands. EH will determine what actually failed. */ | |
869 | if (freeze) | |
870 | ata_port_freeze(ap); | |
871 | else | |
872 | ata_port_abort(ap); | |
873 | return 1; | |
fbbb262d | 874 | } |
5bd28a4b | 875 | |
f2fb344b | 876 | if (likely(flags & NV_CPB_RESP_DONE)) { |
fbbb262d | 877 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num); |
5bd28a4b RH |
878 | VPRINTK("CPB flags done, flags=0x%x\n", flags); |
879 | if (likely(qc)) { | |
2dcb407e | 880 | DPRINTK("Completing qc from tag %d\n", cpb_num); |
fbbb262d | 881 | ata_qc_complete(qc); |
2a54cf76 | 882 | } else { |
9af5c9c9 | 883 | struct ata_eh_info *ehi = &ap->link.eh_info; |
2a54cf76 RH |
884 | /* Notifier bits set without a command may indicate the drive |
885 | is misbehaving. Raise host state machine violation on this | |
886 | condition. */ | |
5796d1c4 JG |
887 | ata_port_printk(ap, KERN_ERR, |
888 | "notifier for tag %d with no cmd?\n", | |
889 | cpb_num); | |
2a54cf76 RH |
890 | ehi->err_mask |= AC_ERR_HSM; |
891 | ehi->action |= ATA_EH_SOFTRESET; | |
892 | ata_port_freeze(ap); | |
893 | return 1; | |
fbbb262d RH |
894 | } |
895 | } | |
5bd28a4b | 896 | return 0; |
fbbb262d RH |
897 | } |
898 | ||
2dec7555 RH |
899 | static int nv_host_intr(struct ata_port *ap, u8 irq_stat) |
900 | { | |
9af5c9c9 | 901 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag); |
2dec7555 RH |
902 | |
903 | /* freeze if hotplugged */ | |
904 | if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) { | |
905 | ata_port_freeze(ap); | |
906 | return 1; | |
907 | } | |
908 | ||
909 | /* bail out if not our interrupt */ | |
910 | if (!(irq_stat & NV_INT_DEV)) | |
911 | return 0; | |
912 | ||
913 | /* DEV interrupt w/ no active qc? */ | |
914 | if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) { | |
915 | ata_check_status(ap); | |
916 | return 1; | |
917 | } | |
918 | ||
919 | /* handle interrupt */ | |
f740d168 | 920 | return ata_host_intr(ap, qc); |
2dec7555 RH |
921 | } |
922 | ||
fbbb262d RH |
923 | static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance) |
924 | { | |
925 | struct ata_host *host = dev_instance; | |
926 | int i, handled = 0; | |
2dec7555 | 927 | u32 notifier_clears[2]; |
fbbb262d RH |
928 | |
929 | spin_lock(&host->lock); | |
930 | ||
931 | for (i = 0; i < host->n_ports; i++) { | |
932 | struct ata_port *ap = host->ports[i]; | |
2dec7555 | 933 | notifier_clears[i] = 0; |
fbbb262d RH |
934 | |
935 | if (ap && !(ap->flags & ATA_FLAG_DISABLED)) { | |
936 | struct nv_adma_port_priv *pp = ap->private_data; | |
cdf56bcf | 937 | void __iomem *mmio = pp->ctl_block; |
fbbb262d RH |
938 | u16 status; |
939 | u32 gen_ctl; | |
fbbb262d | 940 | u32 notifier, notifier_error; |
a617c09f | 941 | |
53014e25 RH |
942 | /* if ADMA is disabled, use standard ata interrupt handler */ |
943 | if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) { | |
944 | u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804) | |
945 | >> (NV_INT_PORT_SHIFT * i); | |
946 | handled += nv_host_intr(ap, irq_stat); | |
947 | continue; | |
948 | } | |
fbbb262d | 949 | |
53014e25 | 950 | /* if in ATA register mode, check for standard interrupts */ |
fbbb262d | 951 | if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) { |
0d5ff566 | 952 | u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804) |
2dec7555 | 953 | >> (NV_INT_PORT_SHIFT * i); |
2dcb407e | 954 | if (ata_tag_valid(ap->link.active_tag)) |
f740d168 RH |
955 | /** NV_INT_DEV indication seems unreliable at times |
956 | at least in ADMA mode. Force it on always when a | |
957 | command is active, to prevent losing interrupts. */ | |
958 | irq_stat |= NV_INT_DEV; | |
2dec7555 | 959 | handled += nv_host_intr(ap, irq_stat); |
fbbb262d RH |
960 | } |
961 | ||
962 | notifier = readl(mmio + NV_ADMA_NOTIFIER); | |
963 | notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR); | |
2dec7555 | 964 | notifier_clears[i] = notifier | notifier_error; |
fbbb262d | 965 | |
cdf56bcf | 966 | gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL); |
fbbb262d | 967 | |
2dcb407e | 968 | if (!NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier && |
fbbb262d RH |
969 | !notifier_error) |
970 | /* Nothing to do */ | |
971 | continue; | |
972 | ||
973 | status = readw(mmio + NV_ADMA_STAT); | |
974 | ||
975 | /* Clear status. Ensure the controller sees the clearing before we start | |
976 | looking at any of the CPB statuses, so that any CPB completions after | |
977 | this point in the handler will raise another interrupt. */ | |
978 | writew(status, mmio + NV_ADMA_STAT); | |
979 | readw(mmio + NV_ADMA_STAT); /* flush posted write */ | |
980 | rmb(); | |
981 | ||
5bd28a4b RH |
982 | handled++; /* irq handled if we got here */ |
983 | ||
984 | /* freeze if hotplugged or controller error */ | |
985 | if (unlikely(status & (NV_ADMA_STAT_HOTPLUG | | |
986 | NV_ADMA_STAT_HOTUNPLUG | | |
5278b50c RH |
987 | NV_ADMA_STAT_TIMEOUT | |
988 | NV_ADMA_STAT_SERROR))) { | |
9af5c9c9 | 989 | struct ata_eh_info *ehi = &ap->link.eh_info; |
5bd28a4b RH |
990 | |
991 | ata_ehi_clear_desc(ehi); | |
2dcb407e | 992 | __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status); |
5bd28a4b RH |
993 | if (status & NV_ADMA_STAT_TIMEOUT) { |
994 | ehi->err_mask |= AC_ERR_SYSTEM; | |
b64bbc39 | 995 | ata_ehi_push_desc(ehi, "timeout"); |
5bd28a4b RH |
996 | } else if (status & NV_ADMA_STAT_HOTPLUG) { |
997 | ata_ehi_hotplugged(ehi); | |
b64bbc39 | 998 | ata_ehi_push_desc(ehi, "hotplug"); |
5bd28a4b RH |
999 | } else if (status & NV_ADMA_STAT_HOTUNPLUG) { |
1000 | ata_ehi_hotplugged(ehi); | |
b64bbc39 | 1001 | ata_ehi_push_desc(ehi, "hot unplug"); |
5278b50c RH |
1002 | } else if (status & NV_ADMA_STAT_SERROR) { |
1003 | /* let libata analyze SError and figure out the cause */ | |
b64bbc39 TH |
1004 | ata_ehi_push_desc(ehi, "SError"); |
1005 | } else | |
1006 | ata_ehi_push_desc(ehi, "unknown"); | |
fbbb262d | 1007 | ata_port_freeze(ap); |
fbbb262d RH |
1008 | continue; |
1009 | } | |
1010 | ||
5bd28a4b RH |
1011 | if (status & (NV_ADMA_STAT_DONE | |
1012 | NV_ADMA_STAT_CPBERR)) { | |
8ba5e4cb | 1013 | u32 check_commands; |
721449bf | 1014 | int pos, error = 0; |
8ba5e4cb | 1015 | |
b447916e | 1016 | if (ata_tag_valid(ap->link.active_tag)) |
9af5c9c9 | 1017 | check_commands = 1 << ap->link.active_tag; |
8ba5e4cb | 1018 | else |
9af5c9c9 | 1019 | check_commands = ap->link.sactive; |
8ba5e4cb | 1020 | |
fbbb262d | 1021 | /** Check CPBs for completed commands */ |
721449bf RH |
1022 | while ((pos = ffs(check_commands)) && !error) { |
1023 | pos--; | |
1024 | error = nv_adma_check_cpb(ap, pos, | |
5796d1c4 JG |
1025 | notifier_error & (1 << pos)); |
1026 | check_commands &= ~(1 << pos); | |
fbbb262d RH |
1027 | } |
1028 | } | |
fbbb262d RH |
1029 | } |
1030 | } | |
f20b16ff | 1031 | |
b447916e | 1032 | if (notifier_clears[0] || notifier_clears[1]) { |
2dec7555 RH |
1033 | /* Note: Both notifier clear registers must be written |
1034 | if either is set, even if one is zero, according to NVIDIA. */ | |
cdf56bcf RH |
1035 | struct nv_adma_port_priv *pp = host->ports[0]->private_data; |
1036 | writel(notifier_clears[0], pp->notifier_clear_block); | |
1037 | pp = host->ports[1]->private_data; | |
1038 | writel(notifier_clears[1], pp->notifier_clear_block); | |
2dec7555 | 1039 | } |
fbbb262d RH |
1040 | |
1041 | spin_unlock(&host->lock); | |
1042 | ||
1043 | return IRQ_RETVAL(handled); | |
1044 | } | |
1045 | ||
53014e25 RH |
1046 | static void nv_adma_freeze(struct ata_port *ap) |
1047 | { | |
1048 | struct nv_adma_port_priv *pp = ap->private_data; | |
1049 | void __iomem *mmio = pp->ctl_block; | |
1050 | u16 tmp; | |
1051 | ||
1052 | nv_ck804_freeze(ap); | |
1053 | ||
1054 | if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) | |
1055 | return; | |
1056 | ||
1057 | /* clear any outstanding CK804 notifications */ | |
2dcb407e | 1058 | writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT), |
53014e25 RH |
1059 | ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804); |
1060 | ||
1061 | /* Disable interrupt */ | |
1062 | tmp = readw(mmio + NV_ADMA_CTL); | |
2dcb407e | 1063 | writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN), |
53014e25 | 1064 | mmio + NV_ADMA_CTL); |
5796d1c4 | 1065 | readw(mmio + NV_ADMA_CTL); /* flush posted write */ |
53014e25 RH |
1066 | } |
1067 | ||
1068 | static void nv_adma_thaw(struct ata_port *ap) | |
1069 | { | |
1070 | struct nv_adma_port_priv *pp = ap->private_data; | |
1071 | void __iomem *mmio = pp->ctl_block; | |
1072 | u16 tmp; | |
1073 | ||
1074 | nv_ck804_thaw(ap); | |
1075 | ||
1076 | if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) | |
1077 | return; | |
1078 | ||
1079 | /* Enable interrupt */ | |
1080 | tmp = readw(mmio + NV_ADMA_CTL); | |
2dcb407e | 1081 | writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN), |
53014e25 | 1082 | mmio + NV_ADMA_CTL); |
5796d1c4 | 1083 | readw(mmio + NV_ADMA_CTL); /* flush posted write */ |
53014e25 RH |
1084 | } |
1085 | ||
fbbb262d RH |
1086 | static void nv_adma_irq_clear(struct ata_port *ap) |
1087 | { | |
cdf56bcf RH |
1088 | struct nv_adma_port_priv *pp = ap->private_data; |
1089 | void __iomem *mmio = pp->ctl_block; | |
53014e25 | 1090 | u32 notifier_clears[2]; |
fbbb262d | 1091 | |
53014e25 RH |
1092 | if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) { |
1093 | ata_bmdma_irq_clear(ap); | |
1094 | return; | |
1095 | } | |
1096 | ||
1097 | /* clear any outstanding CK804 notifications */ | |
2dcb407e | 1098 | writeb(NV_INT_ALL << (ap->port_no * NV_INT_PORT_SHIFT), |
53014e25 | 1099 | ap->host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804); |
fbbb262d | 1100 | |
53014e25 RH |
1101 | /* clear ADMA status */ |
1102 | writew(0xffff, mmio + NV_ADMA_STAT); | |
a617c09f | 1103 | |
53014e25 RH |
1104 | /* clear notifiers - note both ports need to be written with |
1105 | something even though we are only clearing on one */ | |
1106 | if (ap->port_no == 0) { | |
1107 | notifier_clears[0] = 0xFFFFFFFF; | |
1108 | notifier_clears[1] = 0; | |
1109 | } else { | |
1110 | notifier_clears[0] = 0; | |
1111 | notifier_clears[1] = 0xFFFFFFFF; | |
1112 | } | |
1113 | pp = ap->host->ports[0]->private_data; | |
1114 | writel(notifier_clears[0], pp->notifier_clear_block); | |
1115 | pp = ap->host->ports[1]->private_data; | |
1116 | writel(notifier_clears[1], pp->notifier_clear_block); | |
fbbb262d RH |
1117 | } |
1118 | ||
f5ecac2d | 1119 | static void nv_adma_post_internal_cmd(struct ata_queued_cmd *qc) |
fbbb262d | 1120 | { |
f5ecac2d | 1121 | struct nv_adma_port_priv *pp = qc->ap->private_data; |
fbbb262d | 1122 | |
b447916e | 1123 | if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) |
f5ecac2d | 1124 | ata_bmdma_post_internal_cmd(qc); |
fbbb262d RH |
1125 | } |
1126 | ||
1127 | static int nv_adma_port_start(struct ata_port *ap) | |
1128 | { | |
1129 | struct device *dev = ap->host->dev; | |
1130 | struct nv_adma_port_priv *pp; | |
1131 | int rc; | |
1132 | void *mem; | |
1133 | dma_addr_t mem_dma; | |
cdf56bcf | 1134 | void __iomem *mmio; |
fbbb262d RH |
1135 | u16 tmp; |
1136 | ||
1137 | VPRINTK("ENTER\n"); | |
1138 | ||
1139 | rc = ata_port_start(ap); | |
1140 | if (rc) | |
1141 | return rc; | |
1142 | ||
24dc5f33 TH |
1143 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
1144 | if (!pp) | |
1145 | return -ENOMEM; | |
fbbb262d | 1146 | |
0d5ff566 | 1147 | mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT + |
cdf56bcf RH |
1148 | ap->port_no * NV_ADMA_PORT_SIZE; |
1149 | pp->ctl_block = mmio; | |
0d5ff566 | 1150 | pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN; |
cdf56bcf RH |
1151 | pp->notifier_clear_block = pp->gen_block + |
1152 | NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no); | |
1153 | ||
24dc5f33 TH |
1154 | mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ, |
1155 | &mem_dma, GFP_KERNEL); | |
1156 | if (!mem) | |
1157 | return -ENOMEM; | |
fbbb262d RH |
1158 | memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ); |
1159 | ||
1160 | /* | |
1161 | * First item in chunk of DMA memory: | |
1162 | * 128-byte command parameter block (CPB) | |
1163 | * one for each command tag | |
1164 | */ | |
1165 | pp->cpb = mem; | |
1166 | pp->cpb_dma = mem_dma; | |
1167 | ||
1168 | writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW); | |
5796d1c4 | 1169 | writel((mem_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH); |
fbbb262d RH |
1170 | |
1171 | mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ; | |
1172 | mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ; | |
1173 | ||
1174 | /* | |
1175 | * Second item: block of ADMA_SGTBL_LEN s/g entries | |
1176 | */ | |
1177 | pp->aprd = mem; | |
1178 | pp->aprd_dma = mem_dma; | |
1179 | ||
1180 | ap->private_data = pp; | |
1181 | ||
1182 | /* clear any outstanding interrupt conditions */ | |
1183 | writew(0xffff, mmio + NV_ADMA_STAT); | |
1184 | ||
1185 | /* initialize port variables */ | |
1186 | pp->flags = NV_ADMA_PORT_REGISTER_MODE; | |
1187 | ||
1188 | /* clear CPB fetch count */ | |
1189 | writew(0, mmio + NV_ADMA_CPB_COUNT); | |
1190 | ||
cdf56bcf | 1191 | /* clear GO for register mode, enable interrupt */ |
fbbb262d | 1192 | tmp = readw(mmio + NV_ADMA_CTL); |
5796d1c4 JG |
1193 | writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN | |
1194 | NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL); | |
fbbb262d RH |
1195 | |
1196 | tmp = readw(mmio + NV_ADMA_CTL); | |
1197 | writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
5796d1c4 | 1198 | readw(mmio + NV_ADMA_CTL); /* flush posted write */ |
fbbb262d RH |
1199 | udelay(1); |
1200 | writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
5796d1c4 | 1201 | readw(mmio + NV_ADMA_CTL); /* flush posted write */ |
fbbb262d RH |
1202 | |
1203 | return 0; | |
fbbb262d RH |
1204 | } |
1205 | ||
1206 | static void nv_adma_port_stop(struct ata_port *ap) | |
1207 | { | |
fbbb262d | 1208 | struct nv_adma_port_priv *pp = ap->private_data; |
cdf56bcf | 1209 | void __iomem *mmio = pp->ctl_block; |
fbbb262d RH |
1210 | |
1211 | VPRINTK("ENTER\n"); | |
fbbb262d | 1212 | writew(0, mmio + NV_ADMA_CTL); |
fbbb262d RH |
1213 | } |
1214 | ||
438ac6d5 | 1215 | #ifdef CONFIG_PM |
cdf56bcf RH |
1216 | static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg) |
1217 | { | |
1218 | struct nv_adma_port_priv *pp = ap->private_data; | |
1219 | void __iomem *mmio = pp->ctl_block; | |
1220 | ||
1221 | /* Go to register mode - clears GO */ | |
1222 | nv_adma_register_mode(ap); | |
1223 | ||
1224 | /* clear CPB fetch count */ | |
1225 | writew(0, mmio + NV_ADMA_CPB_COUNT); | |
1226 | ||
1227 | /* disable interrupt, shut down port */ | |
1228 | writew(0, mmio + NV_ADMA_CTL); | |
1229 | ||
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | static int nv_adma_port_resume(struct ata_port *ap) | |
1234 | { | |
1235 | struct nv_adma_port_priv *pp = ap->private_data; | |
1236 | void __iomem *mmio = pp->ctl_block; | |
1237 | u16 tmp; | |
1238 | ||
1239 | /* set CPB block location */ | |
1240 | writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW); | |
5796d1c4 | 1241 | writel((pp->cpb_dma >> 16) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH); |
cdf56bcf RH |
1242 | |
1243 | /* clear any outstanding interrupt conditions */ | |
1244 | writew(0xffff, mmio + NV_ADMA_STAT); | |
1245 | ||
1246 | /* initialize port variables */ | |
1247 | pp->flags |= NV_ADMA_PORT_REGISTER_MODE; | |
1248 | ||
1249 | /* clear CPB fetch count */ | |
1250 | writew(0, mmio + NV_ADMA_CPB_COUNT); | |
1251 | ||
1252 | /* clear GO for register mode, enable interrupt */ | |
1253 | tmp = readw(mmio + NV_ADMA_CTL); | |
5796d1c4 JG |
1254 | writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN | |
1255 | NV_ADMA_CTL_HOTPLUG_IEN, mmio + NV_ADMA_CTL); | |
cdf56bcf RH |
1256 | |
1257 | tmp = readw(mmio + NV_ADMA_CTL); | |
1258 | writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
5796d1c4 | 1259 | readw(mmio + NV_ADMA_CTL); /* flush posted write */ |
cdf56bcf RH |
1260 | udelay(1); |
1261 | writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
5796d1c4 | 1262 | readw(mmio + NV_ADMA_CTL); /* flush posted write */ |
cdf56bcf RH |
1263 | |
1264 | return 0; | |
1265 | } | |
438ac6d5 | 1266 | #endif |
fbbb262d | 1267 | |
9a829ccf | 1268 | static void nv_adma_setup_port(struct ata_port *ap) |
fbbb262d | 1269 | { |
9a829ccf TH |
1270 | void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR]; |
1271 | struct ata_ioports *ioport = &ap->ioaddr; | |
fbbb262d RH |
1272 | |
1273 | VPRINTK("ENTER\n"); | |
1274 | ||
9a829ccf | 1275 | mmio += NV_ADMA_PORT + ap->port_no * NV_ADMA_PORT_SIZE; |
fbbb262d | 1276 | |
0d5ff566 TH |
1277 | ioport->cmd_addr = mmio; |
1278 | ioport->data_addr = mmio + (ATA_REG_DATA * 4); | |
fbbb262d | 1279 | ioport->error_addr = |
0d5ff566 TH |
1280 | ioport->feature_addr = mmio + (ATA_REG_ERR * 4); |
1281 | ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4); | |
1282 | ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4); | |
1283 | ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4); | |
1284 | ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4); | |
1285 | ioport->device_addr = mmio + (ATA_REG_DEVICE * 4); | |
fbbb262d | 1286 | ioport->status_addr = |
0d5ff566 | 1287 | ioport->command_addr = mmio + (ATA_REG_STATUS * 4); |
fbbb262d | 1288 | ioport->altstatus_addr = |
0d5ff566 | 1289 | ioport->ctl_addr = mmio + 0x20; |
fbbb262d RH |
1290 | } |
1291 | ||
9a829ccf | 1292 | static int nv_adma_host_init(struct ata_host *host) |
fbbb262d | 1293 | { |
9a829ccf | 1294 | struct pci_dev *pdev = to_pci_dev(host->dev); |
fbbb262d RH |
1295 | unsigned int i; |
1296 | u32 tmp32; | |
1297 | ||
1298 | VPRINTK("ENTER\n"); | |
1299 | ||
1300 | /* enable ADMA on the ports */ | |
1301 | pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32); | |
1302 | tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN | | |
1303 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN | | |
1304 | NV_MCP_SATA_CFG_20_PORT1_EN | | |
1305 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN; | |
1306 | ||
1307 | pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32); | |
1308 | ||
9a829ccf TH |
1309 | for (i = 0; i < host->n_ports; i++) |
1310 | nv_adma_setup_port(host->ports[i]); | |
fbbb262d | 1311 | |
fbbb262d RH |
1312 | return 0; |
1313 | } | |
1314 | ||
1315 | static void nv_adma_fill_aprd(struct ata_queued_cmd *qc, | |
1316 | struct scatterlist *sg, | |
1317 | int idx, | |
1318 | struct nv_adma_prd *aprd) | |
1319 | { | |
41949ed5 | 1320 | u8 flags = 0; |
fbbb262d RH |
1321 | if (qc->tf.flags & ATA_TFLAG_WRITE) |
1322 | flags |= NV_APRD_WRITE; | |
1323 | if (idx == qc->n_elem - 1) | |
1324 | flags |= NV_APRD_END; | |
1325 | else if (idx != 4) | |
1326 | flags |= NV_APRD_CONT; | |
1327 | ||
1328 | aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg))); | |
1329 | aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */ | |
2dec7555 | 1330 | aprd->flags = flags; |
41949ed5 | 1331 | aprd->packet_len = 0; |
fbbb262d RH |
1332 | } |
1333 | ||
1334 | static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb) | |
1335 | { | |
1336 | struct nv_adma_port_priv *pp = qc->ap->private_data; | |
1337 | unsigned int idx; | |
1338 | struct nv_adma_prd *aprd; | |
1339 | struct scatterlist *sg; | |
1340 | ||
1341 | VPRINTK("ENTER\n"); | |
1342 | ||
1343 | idx = 0; | |
1344 | ||
1345 | ata_for_each_sg(sg, qc) { | |
5796d1c4 JG |
1346 | aprd = (idx < 5) ? &cpb->aprd[idx] : |
1347 | &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (idx-5)]; | |
fbbb262d RH |
1348 | nv_adma_fill_aprd(qc, sg, idx, aprd); |
1349 | idx++; | |
1350 | } | |
1351 | if (idx > 5) | |
1352 | cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag))); | |
41949ed5 RH |
1353 | else |
1354 | cpb->next_aprd = cpu_to_le64(0); | |
fbbb262d RH |
1355 | } |
1356 | ||
382a6652 RH |
1357 | static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc) |
1358 | { | |
1359 | struct nv_adma_port_priv *pp = qc->ap->private_data; | |
1360 | ||
1361 | /* ADMA engine can only be used for non-ATAPI DMA commands, | |
f2fb344b RH |
1362 | or interrupt-driven no-data commands, where a result taskfile |
1363 | is not required. */ | |
b447916e | 1364 | if ((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) || |
f2fb344b RH |
1365 | (qc->tf.flags & ATA_TFLAG_POLLING) || |
1366 | (qc->flags & ATA_QCFLAG_RESULT_TF)) | |
382a6652 RH |
1367 | return 1; |
1368 | ||
b447916e | 1369 | if ((qc->flags & ATA_QCFLAG_DMAMAP) || |
382a6652 RH |
1370 | (qc->tf.protocol == ATA_PROT_NODATA)) |
1371 | return 0; | |
1372 | ||
1373 | return 1; | |
1374 | } | |
1375 | ||
fbbb262d RH |
1376 | static void nv_adma_qc_prep(struct ata_queued_cmd *qc) |
1377 | { | |
1378 | struct nv_adma_port_priv *pp = qc->ap->private_data; | |
1379 | struct nv_adma_cpb *cpb = &pp->cpb[qc->tag]; | |
1380 | u8 ctl_flags = NV_CPB_CTL_CPB_VALID | | |
fbbb262d RH |
1381 | NV_CPB_CTL_IEN; |
1382 | ||
382a6652 | 1383 | if (nv_adma_use_reg_mode(qc)) { |
2dec7555 | 1384 | nv_adma_register_mode(qc->ap); |
fbbb262d RH |
1385 | ata_qc_prep(qc); |
1386 | return; | |
1387 | } | |
1388 | ||
41949ed5 RH |
1389 | cpb->resp_flags = NV_CPB_RESP_DONE; |
1390 | wmb(); | |
1391 | cpb->ctl_flags = 0; | |
1392 | wmb(); | |
fbbb262d RH |
1393 | |
1394 | cpb->len = 3; | |
1395 | cpb->tag = qc->tag; | |
1396 | cpb->next_cpb_idx = 0; | |
1397 | ||
1398 | /* turn on NCQ flags for NCQ commands */ | |
1399 | if (qc->tf.protocol == ATA_PROT_NCQ) | |
1400 | ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA; | |
1401 | ||
cdf56bcf RH |
1402 | VPRINTK("qc->flags = 0x%lx\n", qc->flags); |
1403 | ||
fbbb262d RH |
1404 | nv_adma_tf_to_cpb(&qc->tf, cpb->tf); |
1405 | ||
b447916e | 1406 | if (qc->flags & ATA_QCFLAG_DMAMAP) { |
382a6652 RH |
1407 | nv_adma_fill_sg(qc, cpb); |
1408 | ctl_flags |= NV_CPB_CTL_APRD_VALID; | |
1409 | } else | |
1410 | memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5); | |
fbbb262d | 1411 | |
5796d1c4 JG |
1412 | /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID |
1413 | until we are finished filling in all of the contents */ | |
fbbb262d RH |
1414 | wmb(); |
1415 | cpb->ctl_flags = ctl_flags; | |
41949ed5 RH |
1416 | wmb(); |
1417 | cpb->resp_flags = 0; | |
fbbb262d RH |
1418 | } |
1419 | ||
1420 | static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc) | |
1421 | { | |
2dec7555 | 1422 | struct nv_adma_port_priv *pp = qc->ap->private_data; |
cdf56bcf | 1423 | void __iomem *mmio = pp->ctl_block; |
5e5c74a5 | 1424 | int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ); |
fbbb262d RH |
1425 | |
1426 | VPRINTK("ENTER\n"); | |
1427 | ||
382a6652 | 1428 | if (nv_adma_use_reg_mode(qc)) { |
fbbb262d | 1429 | /* use ATA register mode */ |
382a6652 | 1430 | VPRINTK("using ATA register mode: 0x%lx\n", qc->flags); |
fbbb262d RH |
1431 | nv_adma_register_mode(qc->ap); |
1432 | return ata_qc_issue_prot(qc); | |
1433 | } else | |
1434 | nv_adma_mode(qc->ap); | |
1435 | ||
1436 | /* write append register, command tag in lower 8 bits | |
1437 | and (number of cpbs to append -1) in top 8 bits */ | |
1438 | wmb(); | |
5e5c74a5 | 1439 | |
b447916e | 1440 | if (curr_ncq != pp->last_issue_ncq) { |
5796d1c4 JG |
1441 | /* Seems to need some delay before switching between NCQ and |
1442 | non-NCQ commands, else we get command timeouts and such. */ | |
5e5c74a5 RH |
1443 | udelay(20); |
1444 | pp->last_issue_ncq = curr_ncq; | |
1445 | } | |
1446 | ||
fbbb262d RH |
1447 | writew(qc->tag, mmio + NV_ADMA_APPEND); |
1448 | ||
5796d1c4 | 1449 | DPRINTK("Issued tag %u\n", qc->tag); |
fbbb262d RH |
1450 | |
1451 | return 0; | |
1452 | } | |
1453 | ||
7d12e780 | 1454 | static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance) |
1da177e4 | 1455 | { |
cca3974e | 1456 | struct ata_host *host = dev_instance; |
1da177e4 LT |
1457 | unsigned int i; |
1458 | unsigned int handled = 0; | |
1459 | unsigned long flags; | |
1460 | ||
cca3974e | 1461 | spin_lock_irqsave(&host->lock, flags); |
1da177e4 | 1462 | |
cca3974e | 1463 | for (i = 0; i < host->n_ports; i++) { |
1da177e4 LT |
1464 | struct ata_port *ap; |
1465 | ||
cca3974e | 1466 | ap = host->ports[i]; |
c1389503 | 1467 | if (ap && |
029f5468 | 1468 | !(ap->flags & ATA_FLAG_DISABLED)) { |
1da177e4 LT |
1469 | struct ata_queued_cmd *qc; |
1470 | ||
9af5c9c9 | 1471 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
e50362ec | 1472 | if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) |
1da177e4 | 1473 | handled += ata_host_intr(ap, qc); |
b887030a AC |
1474 | else |
1475 | // No request pending? Clear interrupt status | |
1476 | // anyway, in case there's one pending. | |
1477 | ap->ops->check_status(ap); | |
1da177e4 LT |
1478 | } |
1479 | ||
1480 | } | |
1481 | ||
cca3974e | 1482 | spin_unlock_irqrestore(&host->lock, flags); |
1da177e4 LT |
1483 | |
1484 | return IRQ_RETVAL(handled); | |
1485 | } | |
1486 | ||
cca3974e | 1487 | static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat) |
ada364e8 TH |
1488 | { |
1489 | int i, handled = 0; | |
1490 | ||
cca3974e JG |
1491 | for (i = 0; i < host->n_ports; i++) { |
1492 | struct ata_port *ap = host->ports[i]; | |
ada364e8 TH |
1493 | |
1494 | if (ap && !(ap->flags & ATA_FLAG_DISABLED)) | |
1495 | handled += nv_host_intr(ap, irq_stat); | |
1496 | ||
1497 | irq_stat >>= NV_INT_PORT_SHIFT; | |
1498 | } | |
1499 | ||
1500 | return IRQ_RETVAL(handled); | |
1501 | } | |
1502 | ||
7d12e780 | 1503 | static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance) |
ada364e8 | 1504 | { |
cca3974e | 1505 | struct ata_host *host = dev_instance; |
ada364e8 TH |
1506 | u8 irq_stat; |
1507 | irqreturn_t ret; | |
1508 | ||
cca3974e | 1509 | spin_lock(&host->lock); |
0d5ff566 | 1510 | irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS); |
cca3974e JG |
1511 | ret = nv_do_interrupt(host, irq_stat); |
1512 | spin_unlock(&host->lock); | |
ada364e8 TH |
1513 | |
1514 | return ret; | |
1515 | } | |
1516 | ||
7d12e780 | 1517 | static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance) |
ada364e8 | 1518 | { |
cca3974e | 1519 | struct ata_host *host = dev_instance; |
ada364e8 TH |
1520 | u8 irq_stat; |
1521 | irqreturn_t ret; | |
1522 | ||
cca3974e | 1523 | spin_lock(&host->lock); |
0d5ff566 | 1524 | irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804); |
cca3974e JG |
1525 | ret = nv_do_interrupt(host, irq_stat); |
1526 | spin_unlock(&host->lock); | |
ada364e8 TH |
1527 | |
1528 | return ret; | |
1529 | } | |
1530 | ||
da3dbb17 | 1531 | static int nv_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val) |
1da177e4 | 1532 | { |
1da177e4 | 1533 | if (sc_reg > SCR_CONTROL) |
da3dbb17 | 1534 | return -EINVAL; |
1da177e4 | 1535 | |
da3dbb17 TH |
1536 | *val = ioread32(ap->ioaddr.scr_addr + (sc_reg * 4)); |
1537 | return 0; | |
1da177e4 LT |
1538 | } |
1539 | ||
da3dbb17 | 1540 | static int nv_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val) |
1da177e4 | 1541 | { |
1da177e4 | 1542 | if (sc_reg > SCR_CONTROL) |
da3dbb17 | 1543 | return -EINVAL; |
1da177e4 | 1544 | |
0d5ff566 | 1545 | iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4)); |
da3dbb17 | 1546 | return 0; |
1da177e4 LT |
1547 | } |
1548 | ||
39f87582 TH |
1549 | static void nv_nf2_freeze(struct ata_port *ap) |
1550 | { | |
0d5ff566 | 1551 | void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr; |
39f87582 TH |
1552 | int shift = ap->port_no * NV_INT_PORT_SHIFT; |
1553 | u8 mask; | |
1554 | ||
0d5ff566 | 1555 | mask = ioread8(scr_addr + NV_INT_ENABLE); |
39f87582 | 1556 | mask &= ~(NV_INT_ALL << shift); |
0d5ff566 | 1557 | iowrite8(mask, scr_addr + NV_INT_ENABLE); |
39f87582 TH |
1558 | } |
1559 | ||
1560 | static void nv_nf2_thaw(struct ata_port *ap) | |
1561 | { | |
0d5ff566 | 1562 | void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr; |
39f87582 TH |
1563 | int shift = ap->port_no * NV_INT_PORT_SHIFT; |
1564 | u8 mask; | |
1565 | ||
0d5ff566 | 1566 | iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS); |
39f87582 | 1567 | |
0d5ff566 | 1568 | mask = ioread8(scr_addr + NV_INT_ENABLE); |
39f87582 | 1569 | mask |= (NV_INT_MASK << shift); |
0d5ff566 | 1570 | iowrite8(mask, scr_addr + NV_INT_ENABLE); |
39f87582 TH |
1571 | } |
1572 | ||
1573 | static void nv_ck804_freeze(struct ata_port *ap) | |
1574 | { | |
0d5ff566 | 1575 | void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR]; |
39f87582 TH |
1576 | int shift = ap->port_no * NV_INT_PORT_SHIFT; |
1577 | u8 mask; | |
1578 | ||
1579 | mask = readb(mmio_base + NV_INT_ENABLE_CK804); | |
1580 | mask &= ~(NV_INT_ALL << shift); | |
1581 | writeb(mask, mmio_base + NV_INT_ENABLE_CK804); | |
1582 | } | |
1583 | ||
1584 | static void nv_ck804_thaw(struct ata_port *ap) | |
1585 | { | |
0d5ff566 | 1586 | void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR]; |
39f87582 TH |
1587 | int shift = ap->port_no * NV_INT_PORT_SHIFT; |
1588 | u8 mask; | |
1589 | ||
1590 | writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804); | |
1591 | ||
1592 | mask = readb(mmio_base + NV_INT_ENABLE_CK804); | |
1593 | mask |= (NV_INT_MASK << shift); | |
1594 | writeb(mask, mmio_base + NV_INT_ENABLE_CK804); | |
1595 | } | |
1596 | ||
f140f0f1 KL |
1597 | static void nv_mcp55_freeze(struct ata_port *ap) |
1598 | { | |
1599 | void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR]; | |
1600 | int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55; | |
1601 | u32 mask; | |
1602 | ||
1603 | writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55); | |
1604 | ||
1605 | mask = readl(mmio_base + NV_INT_ENABLE_MCP55); | |
1606 | mask &= ~(NV_INT_ALL_MCP55 << shift); | |
1607 | writel(mask, mmio_base + NV_INT_ENABLE_MCP55); | |
1608 | ata_bmdma_freeze(ap); | |
1609 | } | |
1610 | ||
1611 | static void nv_mcp55_thaw(struct ata_port *ap) | |
1612 | { | |
1613 | void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR]; | |
1614 | int shift = ap->port_no * NV_INT_PORT_SHIFT_MCP55; | |
1615 | u32 mask; | |
1616 | ||
1617 | writel(NV_INT_ALL_MCP55 << shift, mmio_base + NV_INT_STATUS_MCP55); | |
1618 | ||
1619 | mask = readl(mmio_base + NV_INT_ENABLE_MCP55); | |
1620 | mask |= (NV_INT_MASK_MCP55 << shift); | |
1621 | writel(mask, mmio_base + NV_INT_ENABLE_MCP55); | |
1622 | ata_bmdma_thaw(ap); | |
1623 | } | |
1624 | ||
cc0680a5 | 1625 | static int nv_hardreset(struct ata_link *link, unsigned int *class, |
d4b2bab4 | 1626 | unsigned long deadline) |
39f87582 TH |
1627 | { |
1628 | unsigned int dummy; | |
1629 | ||
1630 | /* SATA hardreset fails to retrieve proper device signature on | |
1631 | * some controllers. Don't classify on hardreset. For more | |
647c595d | 1632 | * info, see http://bugzilla.kernel.org/show_bug.cgi?id=3352 |
39f87582 | 1633 | */ |
cc0680a5 | 1634 | return sata_std_hardreset(link, &dummy, deadline); |
39f87582 TH |
1635 | } |
1636 | ||
1637 | static void nv_error_handler(struct ata_port *ap) | |
1638 | { | |
1639 | ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, | |
1640 | nv_hardreset, ata_std_postreset); | |
1641 | } | |
1642 | ||
fbbb262d RH |
1643 | static void nv_adma_error_handler(struct ata_port *ap) |
1644 | { | |
1645 | struct nv_adma_port_priv *pp = ap->private_data; | |
b447916e | 1646 | if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) { |
cdf56bcf | 1647 | void __iomem *mmio = pp->ctl_block; |
fbbb262d RH |
1648 | int i; |
1649 | u16 tmp; | |
a84471fe | 1650 | |
b447916e | 1651 | if (ata_tag_valid(ap->link.active_tag) || ap->link.sactive) { |
2cb27853 RH |
1652 | u32 notifier = readl(mmio + NV_ADMA_NOTIFIER); |
1653 | u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR); | |
1654 | u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL); | |
1655 | u32 status = readw(mmio + NV_ADMA_STAT); | |
08af7414 RH |
1656 | u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT); |
1657 | u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX); | |
2cb27853 | 1658 | |
5796d1c4 JG |
1659 | ata_port_printk(ap, KERN_ERR, |
1660 | "EH in ADMA mode, notifier 0x%X " | |
08af7414 RH |
1661 | "notifier_error 0x%X gen_ctl 0x%X status 0x%X " |
1662 | "next cpb count 0x%X next cpb idx 0x%x\n", | |
1663 | notifier, notifier_error, gen_ctl, status, | |
1664 | cpb_count, next_cpb_idx); | |
2cb27853 | 1665 | |
b447916e | 1666 | for (i = 0; i < NV_ADMA_MAX_CPBS; i++) { |
2cb27853 | 1667 | struct nv_adma_cpb *cpb = &pp->cpb[i]; |
b447916e | 1668 | if ((ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) || |
5796d1c4 | 1669 | ap->link.sactive & (1 << i)) |
2cb27853 RH |
1670 | ata_port_printk(ap, KERN_ERR, |
1671 | "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n", | |
1672 | i, cpb->ctl_flags, cpb->resp_flags); | |
1673 | } | |
1674 | } | |
fbbb262d | 1675 | |
fbbb262d RH |
1676 | /* Push us back into port register mode for error handling. */ |
1677 | nv_adma_register_mode(ap); | |
1678 | ||
5796d1c4 JG |
1679 | /* Mark all of the CPBs as invalid to prevent them from |
1680 | being executed */ | |
b447916e | 1681 | for (i = 0; i < NV_ADMA_MAX_CPBS; i++) |
fbbb262d RH |
1682 | pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID; |
1683 | ||
1684 | /* clear CPB fetch count */ | |
1685 | writew(0, mmio + NV_ADMA_CPB_COUNT); | |
1686 | ||
1687 | /* Reset channel */ | |
1688 | tmp = readw(mmio + NV_ADMA_CTL); | |
1689 | writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
b447916e | 1690 | readw(mmio + NV_ADMA_CTL); /* flush posted write */ |
fbbb262d RH |
1691 | udelay(1); |
1692 | writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
b447916e | 1693 | readw(mmio + NV_ADMA_CTL); /* flush posted write */ |
fbbb262d RH |
1694 | } |
1695 | ||
1696 | ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, | |
1697 | nv_hardreset, ata_std_postreset); | |
1698 | } | |
1699 | ||
f140f0f1 KL |
1700 | static void nv_swncq_qc_to_dq(struct ata_port *ap, struct ata_queued_cmd *qc) |
1701 | { | |
1702 | struct nv_swncq_port_priv *pp = ap->private_data; | |
1703 | struct defer_queue *dq = &pp->defer_queue; | |
1704 | ||
1705 | /* queue is full */ | |
1706 | WARN_ON(dq->tail - dq->head == ATA_MAX_QUEUE); | |
1707 | dq->defer_bits |= (1 << qc->tag); | |
1708 | dq->tag[dq->tail++ & (ATA_MAX_QUEUE - 1)] = qc->tag; | |
1709 | } | |
1710 | ||
1711 | static struct ata_queued_cmd *nv_swncq_qc_from_dq(struct ata_port *ap) | |
1712 | { | |
1713 | struct nv_swncq_port_priv *pp = ap->private_data; | |
1714 | struct defer_queue *dq = &pp->defer_queue; | |
1715 | unsigned int tag; | |
1716 | ||
1717 | if (dq->head == dq->tail) /* null queue */ | |
1718 | return NULL; | |
1719 | ||
1720 | tag = dq->tag[dq->head & (ATA_MAX_QUEUE - 1)]; | |
1721 | dq->tag[dq->head++ & (ATA_MAX_QUEUE - 1)] = ATA_TAG_POISON; | |
1722 | WARN_ON(!(dq->defer_bits & (1 << tag))); | |
1723 | dq->defer_bits &= ~(1 << tag); | |
1724 | ||
1725 | return ata_qc_from_tag(ap, tag); | |
1726 | } | |
1727 | ||
1728 | static void nv_swncq_fis_reinit(struct ata_port *ap) | |
1729 | { | |
1730 | struct nv_swncq_port_priv *pp = ap->private_data; | |
1731 | ||
1732 | pp->dhfis_bits = 0; | |
1733 | pp->dmafis_bits = 0; | |
1734 | pp->sdbfis_bits = 0; | |
1735 | pp->ncq_flags = 0; | |
1736 | } | |
1737 | ||
1738 | static void nv_swncq_pp_reinit(struct ata_port *ap) | |
1739 | { | |
1740 | struct nv_swncq_port_priv *pp = ap->private_data; | |
1741 | struct defer_queue *dq = &pp->defer_queue; | |
1742 | ||
1743 | dq->head = 0; | |
1744 | dq->tail = 0; | |
1745 | dq->defer_bits = 0; | |
1746 | pp->qc_active = 0; | |
1747 | pp->last_issue_tag = ATA_TAG_POISON; | |
1748 | nv_swncq_fis_reinit(ap); | |
1749 | } | |
1750 | ||
1751 | static void nv_swncq_irq_clear(struct ata_port *ap, u16 fis) | |
1752 | { | |
1753 | struct nv_swncq_port_priv *pp = ap->private_data; | |
1754 | ||
1755 | writew(fis, pp->irq_block); | |
1756 | } | |
1757 | ||
1758 | static void __ata_bmdma_stop(struct ata_port *ap) | |
1759 | { | |
1760 | struct ata_queued_cmd qc; | |
1761 | ||
1762 | qc.ap = ap; | |
1763 | ata_bmdma_stop(&qc); | |
1764 | } | |
1765 | ||
1766 | static void nv_swncq_ncq_stop(struct ata_port *ap) | |
1767 | { | |
1768 | struct nv_swncq_port_priv *pp = ap->private_data; | |
1769 | unsigned int i; | |
1770 | u32 sactive; | |
1771 | u32 done_mask; | |
1772 | ||
1773 | ata_port_printk(ap, KERN_ERR, | |
1774 | "EH in SWNCQ mode,QC:qc_active 0x%X sactive 0x%X\n", | |
1775 | ap->qc_active, ap->link.sactive); | |
1776 | ata_port_printk(ap, KERN_ERR, | |
1777 | "SWNCQ:qc_active 0x%X defer_bits 0x%X last_issue_tag 0x%x\n " | |
1778 | "dhfis 0x%X dmafis 0x%X sdbfis 0x%X\n", | |
1779 | pp->qc_active, pp->defer_queue.defer_bits, pp->last_issue_tag, | |
1780 | pp->dhfis_bits, pp->dmafis_bits, pp->sdbfis_bits); | |
1781 | ||
1782 | ata_port_printk(ap, KERN_ERR, "ATA_REG 0x%X ERR_REG 0x%X\n", | |
1783 | ap->ops->check_status(ap), | |
1784 | ioread8(ap->ioaddr.error_addr)); | |
1785 | ||
1786 | sactive = readl(pp->sactive_block); | |
1787 | done_mask = pp->qc_active ^ sactive; | |
1788 | ||
1789 | ata_port_printk(ap, KERN_ERR, "tag : dhfis dmafis sdbfis sacitve\n"); | |
1790 | for (i = 0; i < ATA_MAX_QUEUE; i++) { | |
1791 | u8 err = 0; | |
1792 | if (pp->qc_active & (1 << i)) | |
1793 | err = 0; | |
1794 | else if (done_mask & (1 << i)) | |
1795 | err = 1; | |
1796 | else | |
1797 | continue; | |
1798 | ||
1799 | ata_port_printk(ap, KERN_ERR, | |
1800 | "tag 0x%x: %01x %01x %01x %01x %s\n", i, | |
1801 | (pp->dhfis_bits >> i) & 0x1, | |
1802 | (pp->dmafis_bits >> i) & 0x1, | |
1803 | (pp->sdbfis_bits >> i) & 0x1, | |
1804 | (sactive >> i) & 0x1, | |
1805 | (err ? "error! tag doesn't exit" : " ")); | |
1806 | } | |
1807 | ||
1808 | nv_swncq_pp_reinit(ap); | |
1809 | ap->ops->irq_clear(ap); | |
1810 | __ata_bmdma_stop(ap); | |
1811 | nv_swncq_irq_clear(ap, 0xffff); | |
1812 | } | |
1813 | ||
1814 | static void nv_swncq_error_handler(struct ata_port *ap) | |
1815 | { | |
1816 | struct ata_eh_context *ehc = &ap->link.eh_context; | |
1817 | ||
1818 | if (ap->link.sactive) { | |
1819 | nv_swncq_ncq_stop(ap); | |
1820 | ehc->i.action |= ATA_EH_HARDRESET; | |
1821 | } | |
1822 | ||
1823 | ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, | |
1824 | nv_hardreset, ata_std_postreset); | |
1825 | } | |
1826 | ||
1827 | #ifdef CONFIG_PM | |
1828 | static int nv_swncq_port_suspend(struct ata_port *ap, pm_message_t mesg) | |
1829 | { | |
1830 | void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR]; | |
1831 | u32 tmp; | |
1832 | ||
1833 | /* clear irq */ | |
1834 | writel(~0, mmio + NV_INT_STATUS_MCP55); | |
1835 | ||
1836 | /* disable irq */ | |
1837 | writel(0, mmio + NV_INT_ENABLE_MCP55); | |
1838 | ||
1839 | /* disable swncq */ | |
1840 | tmp = readl(mmio + NV_CTL_MCP55); | |
1841 | tmp &= ~(NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ); | |
1842 | writel(tmp, mmio + NV_CTL_MCP55); | |
1843 | ||
1844 | return 0; | |
1845 | } | |
1846 | ||
1847 | static int nv_swncq_port_resume(struct ata_port *ap) | |
1848 | { | |
1849 | void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR]; | |
1850 | u32 tmp; | |
1851 | ||
1852 | /* clear irq */ | |
1853 | writel(~0, mmio + NV_INT_STATUS_MCP55); | |
1854 | ||
1855 | /* enable irq */ | |
1856 | writel(0x00fd00fd, mmio + NV_INT_ENABLE_MCP55); | |
1857 | ||
1858 | /* enable swncq */ | |
1859 | tmp = readl(mmio + NV_CTL_MCP55); | |
1860 | writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55); | |
1861 | ||
1862 | return 0; | |
1863 | } | |
1864 | #endif | |
1865 | ||
1866 | static void nv_swncq_host_init(struct ata_host *host) | |
1867 | { | |
1868 | u32 tmp; | |
1869 | void __iomem *mmio = host->iomap[NV_MMIO_BAR]; | |
1870 | struct pci_dev *pdev = to_pci_dev(host->dev); | |
1871 | u8 regval; | |
1872 | ||
1873 | /* disable ECO 398 */ | |
1874 | pci_read_config_byte(pdev, 0x7f, ®val); | |
1875 | regval &= ~(1 << 7); | |
1876 | pci_write_config_byte(pdev, 0x7f, regval); | |
1877 | ||
1878 | /* enable swncq */ | |
1879 | tmp = readl(mmio + NV_CTL_MCP55); | |
1880 | VPRINTK("HOST_CTL:0x%X\n", tmp); | |
1881 | writel(tmp | NV_CTL_PRI_SWNCQ | NV_CTL_SEC_SWNCQ, mmio + NV_CTL_MCP55); | |
1882 | ||
1883 | /* enable irq intr */ | |
1884 | tmp = readl(mmio + NV_INT_ENABLE_MCP55); | |
1885 | VPRINTK("HOST_ENABLE:0x%X\n", tmp); | |
1886 | writel(tmp | 0x00fd00fd, mmio + NV_INT_ENABLE_MCP55); | |
1887 | ||
1888 | /* clear port irq */ | |
1889 | writel(~0x0, mmio + NV_INT_STATUS_MCP55); | |
1890 | } | |
1891 | ||
1892 | static int nv_swncq_slave_config(struct scsi_device *sdev) | |
1893 | { | |
1894 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1895 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
1896 | struct ata_device *dev; | |
1897 | int rc; | |
1898 | u8 rev; | |
1899 | u8 check_maxtor = 0; | |
1900 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; | |
1901 | ||
1902 | rc = ata_scsi_slave_config(sdev); | |
1903 | if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun) | |
1904 | /* Not a proper libata device, ignore */ | |
1905 | return rc; | |
1906 | ||
1907 | dev = &ap->link.device[sdev->id]; | |
1908 | if (!(ap->flags & ATA_FLAG_NCQ) || dev->class == ATA_DEV_ATAPI) | |
1909 | return rc; | |
1910 | ||
1911 | /* if MCP51 and Maxtor, then disable ncq */ | |
1912 | if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA || | |
1913 | pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2) | |
1914 | check_maxtor = 1; | |
1915 | ||
1916 | /* if MCP55 and rev <= a2 and Maxtor, then disable ncq */ | |
1917 | if (pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA || | |
1918 | pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2) { | |
1919 | pci_read_config_byte(pdev, 0x8, &rev); | |
1920 | if (rev <= 0xa2) | |
1921 | check_maxtor = 1; | |
1922 | } | |
1923 | ||
1924 | if (!check_maxtor) | |
1925 | return rc; | |
1926 | ||
1927 | ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); | |
1928 | ||
1929 | if (strncmp(model_num, "Maxtor", 6) == 0) { | |
1930 | ata_scsi_change_queue_depth(sdev, 1); | |
1931 | ata_dev_printk(dev, KERN_NOTICE, | |
1932 | "Disabling SWNCQ mode (depth %x)\n", sdev->queue_depth); | |
1933 | } | |
1934 | ||
1935 | return rc; | |
1936 | } | |
1937 | ||
1938 | static int nv_swncq_port_start(struct ata_port *ap) | |
1939 | { | |
1940 | struct device *dev = ap->host->dev; | |
1941 | void __iomem *mmio = ap->host->iomap[NV_MMIO_BAR]; | |
1942 | struct nv_swncq_port_priv *pp; | |
1943 | int rc; | |
1944 | ||
1945 | rc = ata_port_start(ap); | |
1946 | if (rc) | |
1947 | return rc; | |
1948 | ||
1949 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); | |
1950 | if (!pp) | |
1951 | return -ENOMEM; | |
1952 | ||
1953 | pp->prd = dmam_alloc_coherent(dev, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE, | |
1954 | &pp->prd_dma, GFP_KERNEL); | |
1955 | if (!pp->prd) | |
1956 | return -ENOMEM; | |
1957 | memset(pp->prd, 0, ATA_PRD_TBL_SZ * ATA_MAX_QUEUE); | |
1958 | ||
1959 | ap->private_data = pp; | |
1960 | pp->sactive_block = ap->ioaddr.scr_addr + 4 * SCR_ACTIVE; | |
1961 | pp->irq_block = mmio + NV_INT_STATUS_MCP55 + ap->port_no * 2; | |
1962 | pp->tag_block = mmio + NV_NCQ_REG_MCP55 + ap->port_no * 2; | |
1963 | ||
1964 | return 0; | |
1965 | } | |
1966 | ||
1967 | static void nv_swncq_qc_prep(struct ata_queued_cmd *qc) | |
1968 | { | |
1969 | if (qc->tf.protocol != ATA_PROT_NCQ) { | |
1970 | ata_qc_prep(qc); | |
1971 | return; | |
1972 | } | |
1973 | ||
1974 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) | |
1975 | return; | |
1976 | ||
1977 | nv_swncq_fill_sg(qc); | |
1978 | } | |
1979 | ||
1980 | static void nv_swncq_fill_sg(struct ata_queued_cmd *qc) | |
1981 | { | |
1982 | struct ata_port *ap = qc->ap; | |
1983 | struct scatterlist *sg; | |
1984 | unsigned int idx; | |
1985 | struct nv_swncq_port_priv *pp = ap->private_data; | |
1986 | struct ata_prd *prd; | |
1987 | ||
1988 | WARN_ON(qc->__sg == NULL); | |
1989 | WARN_ON(qc->n_elem == 0 && qc->pad_len == 0); | |
1990 | ||
1991 | prd = pp->prd + ATA_MAX_PRD * qc->tag; | |
1992 | ||
1993 | idx = 0; | |
1994 | ata_for_each_sg(sg, qc) { | |
1995 | u32 addr, offset; | |
1996 | u32 sg_len, len; | |
1997 | ||
1998 | addr = (u32)sg_dma_address(sg); | |
1999 | sg_len = sg_dma_len(sg); | |
2000 | ||
2001 | while (sg_len) { | |
2002 | offset = addr & 0xffff; | |
2003 | len = sg_len; | |
2004 | if ((offset + sg_len) > 0x10000) | |
2005 | len = 0x10000 - offset; | |
2006 | ||
2007 | prd[idx].addr = cpu_to_le32(addr); | |
2008 | prd[idx].flags_len = cpu_to_le32(len & 0xffff); | |
2009 | ||
2010 | idx++; | |
2011 | sg_len -= len; | |
2012 | addr += len; | |
2013 | } | |
2014 | } | |
2015 | ||
2016 | if (idx) | |
2017 | prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); | |
2018 | } | |
2019 | ||
2020 | static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap, | |
2021 | struct ata_queued_cmd *qc) | |
2022 | { | |
2023 | struct nv_swncq_port_priv *pp = ap->private_data; | |
2024 | ||
2025 | if (qc == NULL) | |
2026 | return 0; | |
2027 | ||
2028 | DPRINTK("Enter\n"); | |
2029 | ||
2030 | writel((1 << qc->tag), pp->sactive_block); | |
2031 | pp->last_issue_tag = qc->tag; | |
2032 | pp->dhfis_bits &= ~(1 << qc->tag); | |
2033 | pp->dmafis_bits &= ~(1 << qc->tag); | |
2034 | pp->qc_active |= (0x1 << qc->tag); | |
2035 | ||
2036 | ap->ops->tf_load(ap, &qc->tf); /* load tf registers */ | |
2037 | ap->ops->exec_command(ap, &qc->tf); | |
2038 | ||
2039 | DPRINTK("Issued tag %u\n", qc->tag); | |
2040 | ||
2041 | return 0; | |
2042 | } | |
2043 | ||
2044 | static unsigned int nv_swncq_qc_issue(struct ata_queued_cmd *qc) | |
2045 | { | |
2046 | struct ata_port *ap = qc->ap; | |
2047 | struct nv_swncq_port_priv *pp = ap->private_data; | |
2048 | ||
2049 | if (qc->tf.protocol != ATA_PROT_NCQ) | |
2050 | return ata_qc_issue_prot(qc); | |
2051 | ||
2052 | DPRINTK("Enter\n"); | |
2053 | ||
2054 | if (!pp->qc_active) | |
2055 | nv_swncq_issue_atacmd(ap, qc); | |
2056 | else | |
2057 | nv_swncq_qc_to_dq(ap, qc); /* add qc to defer queue */ | |
2058 | ||
2059 | return 0; | |
2060 | } | |
2061 | ||
2062 | static void nv_swncq_hotplug(struct ata_port *ap, u32 fis) | |
2063 | { | |
2064 | u32 serror; | |
2065 | struct ata_eh_info *ehi = &ap->link.eh_info; | |
2066 | ||
2067 | ata_ehi_clear_desc(ehi); | |
2068 | ||
2069 | /* AHCI needs SError cleared; otherwise, it might lock up */ | |
2070 | sata_scr_read(&ap->link, SCR_ERROR, &serror); | |
2071 | sata_scr_write(&ap->link, SCR_ERROR, serror); | |
2072 | ||
2073 | /* analyze @irq_stat */ | |
2074 | if (fis & NV_SWNCQ_IRQ_ADDED) | |
2075 | ata_ehi_push_desc(ehi, "hot plug"); | |
2076 | else if (fis & NV_SWNCQ_IRQ_REMOVED) | |
2077 | ata_ehi_push_desc(ehi, "hot unplug"); | |
2078 | ||
2079 | ata_ehi_hotplugged(ehi); | |
2080 | ||
2081 | /* okay, let's hand over to EH */ | |
2082 | ehi->serror |= serror; | |
2083 | ||
2084 | ata_port_freeze(ap); | |
2085 | } | |
2086 | ||
2087 | static int nv_swncq_sdbfis(struct ata_port *ap) | |
2088 | { | |
2089 | struct ata_queued_cmd *qc; | |
2090 | struct nv_swncq_port_priv *pp = ap->private_data; | |
2091 | struct ata_eh_info *ehi = &ap->link.eh_info; | |
2092 | u32 sactive; | |
2093 | int nr_done = 0; | |
2094 | u32 done_mask; | |
2095 | int i; | |
2096 | u8 host_stat; | |
2097 | u8 lack_dhfis = 0; | |
2098 | ||
2099 | host_stat = ap->ops->bmdma_status(ap); | |
2100 | if (unlikely(host_stat & ATA_DMA_ERR)) { | |
2101 | /* error when transfering data to/from memory */ | |
2102 | ata_ehi_clear_desc(ehi); | |
2103 | ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat); | |
2104 | ehi->err_mask |= AC_ERR_HOST_BUS; | |
2105 | ehi->action |= ATA_EH_SOFTRESET; | |
2106 | return -EINVAL; | |
2107 | } | |
2108 | ||
2109 | ap->ops->irq_clear(ap); | |
2110 | __ata_bmdma_stop(ap); | |
2111 | ||
2112 | sactive = readl(pp->sactive_block); | |
2113 | done_mask = pp->qc_active ^ sactive; | |
2114 | ||
2115 | if (unlikely(done_mask & sactive)) { | |
2116 | ata_ehi_clear_desc(ehi); | |
2117 | ata_ehi_push_desc(ehi, "illegal SWNCQ:qc_active transition" | |
2118 | "(%08x->%08x)", pp->qc_active, sactive); | |
2119 | ehi->err_mask |= AC_ERR_HSM; | |
2120 | ehi->action |= ATA_EH_HARDRESET; | |
2121 | return -EINVAL; | |
2122 | } | |
2123 | for (i = 0; i < ATA_MAX_QUEUE; i++) { | |
2124 | if (!(done_mask & (1 << i))) | |
2125 | continue; | |
2126 | ||
2127 | qc = ata_qc_from_tag(ap, i); | |
2128 | if (qc) { | |
2129 | ata_qc_complete(qc); | |
2130 | pp->qc_active &= ~(1 << i); | |
2131 | pp->dhfis_bits &= ~(1 << i); | |
2132 | pp->dmafis_bits &= ~(1 << i); | |
2133 | pp->sdbfis_bits |= (1 << i); | |
2134 | nr_done++; | |
2135 | } | |
2136 | } | |
2137 | ||
2138 | if (!ap->qc_active) { | |
2139 | DPRINTK("over\n"); | |
2140 | nv_swncq_pp_reinit(ap); | |
2141 | return nr_done; | |
2142 | } | |
2143 | ||
2144 | if (pp->qc_active & pp->dhfis_bits) | |
2145 | return nr_done; | |
2146 | ||
2147 | if ((pp->ncq_flags & ncq_saw_backout) || | |
2148 | (pp->qc_active ^ pp->dhfis_bits)) | |
2149 | /* if the controller cann't get a device to host register FIS, | |
2150 | * The driver needs to reissue the new command. | |
2151 | */ | |
2152 | lack_dhfis = 1; | |
2153 | ||
2154 | DPRINTK("id 0x%x QC: qc_active 0x%x," | |
2155 | "SWNCQ:qc_active 0x%X defer_bits %X " | |
2156 | "dhfis 0x%X dmafis 0x%X last_issue_tag %x\n", | |
2157 | ap->print_id, ap->qc_active, pp->qc_active, | |
2158 | pp->defer_queue.defer_bits, pp->dhfis_bits, | |
2159 | pp->dmafis_bits, pp->last_issue_tag); | |
2160 | ||
2161 | nv_swncq_fis_reinit(ap); | |
2162 | ||
2163 | if (lack_dhfis) { | |
2164 | qc = ata_qc_from_tag(ap, pp->last_issue_tag); | |
2165 | nv_swncq_issue_atacmd(ap, qc); | |
2166 | return nr_done; | |
2167 | } | |
2168 | ||
2169 | if (pp->defer_queue.defer_bits) { | |
2170 | /* send deferral queue command */ | |
2171 | qc = nv_swncq_qc_from_dq(ap); | |
2172 | WARN_ON(qc == NULL); | |
2173 | nv_swncq_issue_atacmd(ap, qc); | |
2174 | } | |
2175 | ||
2176 | return nr_done; | |
2177 | } | |
2178 | ||
2179 | static inline u32 nv_swncq_tag(struct ata_port *ap) | |
2180 | { | |
2181 | struct nv_swncq_port_priv *pp = ap->private_data; | |
2182 | u32 tag; | |
2183 | ||
2184 | tag = readb(pp->tag_block) >> 2; | |
2185 | return (tag & 0x1f); | |
2186 | } | |
2187 | ||
2188 | static int nv_swncq_dmafis(struct ata_port *ap) | |
2189 | { | |
2190 | struct ata_queued_cmd *qc; | |
2191 | unsigned int rw; | |
2192 | u8 dmactl; | |
2193 | u32 tag; | |
2194 | struct nv_swncq_port_priv *pp = ap->private_data; | |
2195 | ||
2196 | __ata_bmdma_stop(ap); | |
2197 | tag = nv_swncq_tag(ap); | |
2198 | ||
2199 | DPRINTK("dma setup tag 0x%x\n", tag); | |
2200 | qc = ata_qc_from_tag(ap, tag); | |
2201 | ||
2202 | if (unlikely(!qc)) | |
2203 | return 0; | |
2204 | ||
2205 | rw = qc->tf.flags & ATA_TFLAG_WRITE; | |
2206 | ||
2207 | /* load PRD table addr. */ | |
2208 | iowrite32(pp->prd_dma + ATA_PRD_TBL_SZ * qc->tag, | |
2209 | ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS); | |
2210 | ||
2211 | /* specify data direction, triple-check start bit is clear */ | |
2212 | dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD); | |
2213 | dmactl &= ~ATA_DMA_WR; | |
2214 | if (!rw) | |
2215 | dmactl |= ATA_DMA_WR; | |
2216 | ||
2217 | iowrite8(dmactl | ATA_DMA_START, ap->ioaddr.bmdma_addr + ATA_DMA_CMD); | |
2218 | ||
2219 | return 1; | |
2220 | } | |
2221 | ||
2222 | static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis) | |
2223 | { | |
2224 | struct nv_swncq_port_priv *pp = ap->private_data; | |
2225 | struct ata_queued_cmd *qc; | |
2226 | struct ata_eh_info *ehi = &ap->link.eh_info; | |
2227 | u32 serror; | |
2228 | u8 ata_stat; | |
2229 | int rc = 0; | |
2230 | ||
2231 | ata_stat = ap->ops->check_status(ap); | |
2232 | nv_swncq_irq_clear(ap, fis); | |
2233 | if (!fis) | |
2234 | return; | |
2235 | ||
2236 | if (ap->pflags & ATA_PFLAG_FROZEN) | |
2237 | return; | |
2238 | ||
2239 | if (fis & NV_SWNCQ_IRQ_HOTPLUG) { | |
2240 | nv_swncq_hotplug(ap, fis); | |
2241 | return; | |
2242 | } | |
2243 | ||
2244 | if (!pp->qc_active) | |
2245 | return; | |
2246 | ||
2247 | if (ap->ops->scr_read(ap, SCR_ERROR, &serror)) | |
2248 | return; | |
2249 | ap->ops->scr_write(ap, SCR_ERROR, serror); | |
2250 | ||
2251 | if (ata_stat & ATA_ERR) { | |
2252 | ata_ehi_clear_desc(ehi); | |
2253 | ata_ehi_push_desc(ehi, "Ata error. fis:0x%X", fis); | |
2254 | ehi->err_mask |= AC_ERR_DEV; | |
2255 | ehi->serror |= serror; | |
2256 | ehi->action |= ATA_EH_SOFTRESET; | |
2257 | ata_port_freeze(ap); | |
2258 | return; | |
2259 | } | |
2260 | ||
2261 | if (fis & NV_SWNCQ_IRQ_BACKOUT) { | |
2262 | /* If the IRQ is backout, driver must issue | |
2263 | * the new command again some time later. | |
2264 | */ | |
2265 | pp->ncq_flags |= ncq_saw_backout; | |
2266 | } | |
2267 | ||
2268 | if (fis & NV_SWNCQ_IRQ_SDBFIS) { | |
2269 | pp->ncq_flags |= ncq_saw_sdb; | |
2270 | DPRINTK("id 0x%x SWNCQ: qc_active 0x%X " | |
2271 | "dhfis 0x%X dmafis 0x%X sactive 0x%X\n", | |
2272 | ap->print_id, pp->qc_active, pp->dhfis_bits, | |
2273 | pp->dmafis_bits, readl(pp->sactive_block)); | |
2274 | rc = nv_swncq_sdbfis(ap); | |
2275 | if (rc < 0) | |
2276 | goto irq_error; | |
2277 | } | |
2278 | ||
2279 | if (fis & NV_SWNCQ_IRQ_DHREGFIS) { | |
2280 | /* The interrupt indicates the new command | |
2281 | * was transmitted correctly to the drive. | |
2282 | */ | |
2283 | pp->dhfis_bits |= (0x1 << pp->last_issue_tag); | |
2284 | pp->ncq_flags |= ncq_saw_d2h; | |
2285 | if (pp->ncq_flags & (ncq_saw_sdb | ncq_saw_backout)) { | |
2286 | ata_ehi_push_desc(ehi, "illegal fis transaction"); | |
2287 | ehi->err_mask |= AC_ERR_HSM; | |
2288 | ehi->action |= ATA_EH_HARDRESET; | |
2289 | goto irq_error; | |
2290 | } | |
2291 | ||
2292 | if (!(fis & NV_SWNCQ_IRQ_DMASETUP) && | |
2293 | !(pp->ncq_flags & ncq_saw_dmas)) { | |
2294 | ata_stat = ap->ops->check_status(ap); | |
2295 | if (ata_stat & ATA_BUSY) | |
2296 | goto irq_exit; | |
2297 | ||
2298 | if (pp->defer_queue.defer_bits) { | |
2299 | DPRINTK("send next command\n"); | |
2300 | qc = nv_swncq_qc_from_dq(ap); | |
2301 | nv_swncq_issue_atacmd(ap, qc); | |
2302 | } | |
2303 | } | |
2304 | } | |
2305 | ||
2306 | if (fis & NV_SWNCQ_IRQ_DMASETUP) { | |
2307 | /* program the dma controller with appropriate PRD buffers | |
2308 | * and start the DMA transfer for requested command. | |
2309 | */ | |
2310 | pp->dmafis_bits |= (0x1 << nv_swncq_tag(ap)); | |
2311 | pp->ncq_flags |= ncq_saw_dmas; | |
2312 | rc = nv_swncq_dmafis(ap); | |
2313 | } | |
2314 | ||
2315 | irq_exit: | |
2316 | return; | |
2317 | irq_error: | |
2318 | ata_ehi_push_desc(ehi, "fis:0x%x", fis); | |
2319 | ata_port_freeze(ap); | |
2320 | return; | |
2321 | } | |
2322 | ||
2323 | static irqreturn_t nv_swncq_interrupt(int irq, void *dev_instance) | |
2324 | { | |
2325 | struct ata_host *host = dev_instance; | |
2326 | unsigned int i; | |
2327 | unsigned int handled = 0; | |
2328 | unsigned long flags; | |
2329 | u32 irq_stat; | |
2330 | ||
2331 | spin_lock_irqsave(&host->lock, flags); | |
2332 | ||
2333 | irq_stat = readl(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_MCP55); | |
2334 | ||
2335 | for (i = 0; i < host->n_ports; i++) { | |
2336 | struct ata_port *ap = host->ports[i]; | |
2337 | ||
2338 | if (ap && !(ap->flags & ATA_FLAG_DISABLED)) { | |
2339 | if (ap->link.sactive) { | |
2340 | nv_swncq_host_interrupt(ap, (u16)irq_stat); | |
2341 | handled = 1; | |
2342 | } else { | |
2343 | if (irq_stat) /* reserve Hotplug */ | |
2344 | nv_swncq_irq_clear(ap, 0xfff0); | |
2345 | ||
2346 | handled += nv_host_intr(ap, (u8)irq_stat); | |
2347 | } | |
2348 | } | |
2349 | irq_stat >>= NV_INT_PORT_SHIFT_MCP55; | |
2350 | } | |
2351 | ||
2352 | spin_unlock_irqrestore(&host->lock, flags); | |
2353 | ||
2354 | return IRQ_RETVAL(handled); | |
2355 | } | |
2356 | ||
5796d1c4 | 2357 | static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
1da177e4 | 2358 | { |
5796d1c4 | 2359 | static int printed_version; |
1626aeb8 | 2360 | const struct ata_port_info *ppi[] = { NULL, NULL }; |
9a829ccf | 2361 | struct ata_host *host; |
cdf56bcf | 2362 | struct nv_host_priv *hpriv; |
1da177e4 LT |
2363 | int rc; |
2364 | u32 bar; | |
0d5ff566 | 2365 | void __iomem *base; |
fbbb262d | 2366 | unsigned long type = ent->driver_data; |
1da177e4 LT |
2367 | |
2368 | // Make sure this is a SATA controller by counting the number of bars | |
2369 | // (NVIDIA SATA controllers will always have six bars). Otherwise, | |
2370 | // it's an IDE controller and we ignore it. | |
5796d1c4 | 2371 | for (bar = 0; bar < 6; bar++) |
1da177e4 LT |
2372 | if (pci_resource_start(pdev, bar) == 0) |
2373 | return -ENODEV; | |
2374 | ||
cdf56bcf | 2375 | if (!printed_version++) |
a9524a76 | 2376 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
1da177e4 | 2377 | |
24dc5f33 | 2378 | rc = pcim_enable_device(pdev); |
1da177e4 | 2379 | if (rc) |
24dc5f33 | 2380 | return rc; |
1da177e4 | 2381 | |
9a829ccf | 2382 | /* determine type and allocate host */ |
f140f0f1 | 2383 | if (type == CK804 && adma_enabled) { |
fbbb262d RH |
2384 | dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n"); |
2385 | type = ADMA; | |
fbbb262d RH |
2386 | } |
2387 | ||
360737a9 JG |
2388 | if (type == SWNCQ) { |
2389 | if (swncq_enabled) | |
2390 | dev_printk(KERN_NOTICE, &pdev->dev, | |
2391 | "Using SWNCQ mode\n"); | |
2392 | else | |
2393 | type = GENERIC; | |
2394 | } | |
2395 | ||
1626aeb8 | 2396 | ppi[0] = &nv_port_info[type]; |
d583bc18 | 2397 | rc = ata_pci_prepare_sff_host(pdev, ppi, &host); |
9a829ccf TH |
2398 | if (rc) |
2399 | return rc; | |
1da177e4 | 2400 | |
24dc5f33 | 2401 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); |
cdf56bcf | 2402 | if (!hpriv) |
24dc5f33 | 2403 | return -ENOMEM; |
9a829ccf TH |
2404 | hpriv->type = type; |
2405 | host->private_data = hpriv; | |
cdf56bcf | 2406 | |
9a829ccf TH |
2407 | /* set 64bit dma masks, may fail */ |
2408 | if (type == ADMA) { | |
2409 | if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0) | |
2410 | pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
2411 | } | |
1da177e4 | 2412 | |
9a829ccf TH |
2413 | /* request and iomap NV_MMIO_BAR */ |
2414 | rc = pcim_iomap_regions(pdev, 1 << NV_MMIO_BAR, DRV_NAME); | |
2415 | if (rc) | |
2416 | return rc; | |
1da177e4 | 2417 | |
9a829ccf TH |
2418 | /* configure SCR access */ |
2419 | base = host->iomap[NV_MMIO_BAR]; | |
2420 | host->ports[0]->ioaddr.scr_addr = base + NV_PORT0_SCR_REG_OFFSET; | |
2421 | host->ports[1]->ioaddr.scr_addr = base + NV_PORT1_SCR_REG_OFFSET; | |
1da177e4 | 2422 | |
ada364e8 | 2423 | /* enable SATA space for CK804 */ |
fbbb262d | 2424 | if (type >= CK804) { |
ada364e8 TH |
2425 | u8 regval; |
2426 | ||
2427 | pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val); | |
2428 | regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN; | |
2429 | pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); | |
2430 | } | |
2431 | ||
9a829ccf | 2432 | /* init ADMA */ |
fbbb262d | 2433 | if (type == ADMA) { |
9a829ccf | 2434 | rc = nv_adma_host_init(host); |
fbbb262d | 2435 | if (rc) |
24dc5f33 | 2436 | return rc; |
360737a9 | 2437 | } else if (type == SWNCQ) |
f140f0f1 | 2438 | nv_swncq_host_init(host); |
fbbb262d | 2439 | |
9a829ccf TH |
2440 | pci_set_master(pdev); |
2441 | return ata_host_activate(host, pdev->irq, ppi[0]->irq_handler, | |
2442 | IRQF_SHARED, ppi[0]->sht); | |
1da177e4 LT |
2443 | } |
2444 | ||
438ac6d5 | 2445 | #ifdef CONFIG_PM |
cdf56bcf RH |
2446 | static int nv_pci_device_resume(struct pci_dev *pdev) |
2447 | { | |
2448 | struct ata_host *host = dev_get_drvdata(&pdev->dev); | |
2449 | struct nv_host_priv *hpriv = host->private_data; | |
ce053fa8 | 2450 | int rc; |
cdf56bcf | 2451 | |
ce053fa8 | 2452 | rc = ata_pci_device_do_resume(pdev); |
b447916e | 2453 | if (rc) |
ce053fa8 | 2454 | return rc; |
cdf56bcf RH |
2455 | |
2456 | if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) { | |
b447916e | 2457 | if (hpriv->type >= CK804) { |
cdf56bcf RH |
2458 | u8 regval; |
2459 | ||
2460 | pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val); | |
2461 | regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN; | |
2462 | pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); | |
2463 | } | |
b447916e | 2464 | if (hpriv->type == ADMA) { |
cdf56bcf RH |
2465 | u32 tmp32; |
2466 | struct nv_adma_port_priv *pp; | |
2467 | /* enable/disable ADMA on the ports appropriately */ | |
2468 | pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32); | |
2469 | ||
2470 | pp = host->ports[0]->private_data; | |
b447916e | 2471 | if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) |
cdf56bcf | 2472 | tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN | |
5796d1c4 | 2473 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN); |
cdf56bcf RH |
2474 | else |
2475 | tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN | | |
5796d1c4 | 2476 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN); |
cdf56bcf | 2477 | pp = host->ports[1]->private_data; |
b447916e | 2478 | if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) |
cdf56bcf | 2479 | tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN | |
5796d1c4 | 2480 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN); |
cdf56bcf RH |
2481 | else |
2482 | tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN | | |
5796d1c4 | 2483 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN); |
cdf56bcf RH |
2484 | |
2485 | pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32); | |
2486 | } | |
2487 | } | |
2488 | ||
2489 | ata_host_resume(host); | |
2490 | ||
2491 | return 0; | |
2492 | } | |
438ac6d5 | 2493 | #endif |
cdf56bcf | 2494 | |
cca3974e | 2495 | static void nv_ck804_host_stop(struct ata_host *host) |
ada364e8 | 2496 | { |
cca3974e | 2497 | struct pci_dev *pdev = to_pci_dev(host->dev); |
ada364e8 TH |
2498 | u8 regval; |
2499 | ||
2500 | /* disable SATA space for CK804 */ | |
2501 | pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val); | |
2502 | regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN; | |
2503 | pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); | |
ada364e8 TH |
2504 | } |
2505 | ||
fbbb262d RH |
2506 | static void nv_adma_host_stop(struct ata_host *host) |
2507 | { | |
2508 | struct pci_dev *pdev = to_pci_dev(host->dev); | |
fbbb262d RH |
2509 | u32 tmp32; |
2510 | ||
fbbb262d RH |
2511 | /* disable ADMA on the ports */ |
2512 | pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32); | |
2513 | tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN | | |
2514 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN | | |
2515 | NV_MCP_SATA_CFG_20_PORT1_EN | | |
2516 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN); | |
2517 | ||
2518 | pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32); | |
2519 | ||
2520 | nv_ck804_host_stop(host); | |
2521 | } | |
2522 | ||
1da177e4 LT |
2523 | static int __init nv_init(void) |
2524 | { | |
b7887196 | 2525 | return pci_register_driver(&nv_pci_driver); |
1da177e4 LT |
2526 | } |
2527 | ||
2528 | static void __exit nv_exit(void) | |
2529 | { | |
2530 | pci_unregister_driver(&nv_pci_driver); | |
2531 | } | |
2532 | ||
2533 | module_init(nv_init); | |
2534 | module_exit(nv_exit); | |
fbbb262d RH |
2535 | module_param_named(adma, adma_enabled, bool, 0444); |
2536 | MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: true)"); | |
f140f0f1 KL |
2537 | module_param_named(swncq, swncq_enabled, bool, 0444); |
2538 | MODULE_PARM_DESC(swncq, "Enable use of SWNCQ (Default: false)"); | |
2539 |