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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" | |
cdf56bcf | 52 | #define DRV_VERSION "3.3" |
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 | | |
166 | NV_ADMA_STAT_TIMEOUT, | |
167 | ||
168 | /* port flags */ | |
169 | NV_ADMA_PORT_REGISTER_MODE = (1 << 0), | |
2dec7555 | 170 | NV_ADMA_ATAPI_SETUP_COMPLETE = (1 << 1), |
fbbb262d RH |
171 | |
172 | }; | |
173 | ||
174 | /* ADMA Physical Region Descriptor - one SG segment */ | |
175 | struct nv_adma_prd { | |
176 | __le64 addr; | |
177 | __le32 len; | |
178 | u8 flags; | |
179 | u8 packet_len; | |
180 | __le16 reserved; | |
181 | }; | |
182 | ||
183 | enum nv_adma_regbits { | |
184 | CMDEND = (1 << 15), /* end of command list */ | |
185 | WNB = (1 << 14), /* wait-not-BSY */ | |
186 | IGN = (1 << 13), /* ignore this entry */ | |
187 | CS1n = (1 << (4 + 8)), /* std. PATA signals follow... */ | |
188 | DA2 = (1 << (2 + 8)), | |
189 | DA1 = (1 << (1 + 8)), | |
190 | DA0 = (1 << (0 + 8)), | |
191 | }; | |
192 | ||
193 | /* ADMA Command Parameter Block | |
194 | The first 5 SG segments are stored inside the Command Parameter Block itself. | |
195 | If there are more than 5 segments the remainder are stored in a separate | |
196 | memory area indicated by next_aprd. */ | |
197 | struct nv_adma_cpb { | |
198 | u8 resp_flags; /* 0 */ | |
199 | u8 reserved1; /* 1 */ | |
200 | u8 ctl_flags; /* 2 */ | |
201 | /* len is length of taskfile in 64 bit words */ | |
202 | u8 len; /* 3 */ | |
203 | u8 tag; /* 4 */ | |
204 | u8 next_cpb_idx; /* 5 */ | |
205 | __le16 reserved2; /* 6-7 */ | |
206 | __le16 tf[12]; /* 8-31 */ | |
207 | struct nv_adma_prd aprd[5]; /* 32-111 */ | |
208 | __le64 next_aprd; /* 112-119 */ | |
209 | __le64 reserved3; /* 120-127 */ | |
10ad05df | 210 | }; |
1da177e4 | 211 | |
fbbb262d RH |
212 | |
213 | struct nv_adma_port_priv { | |
214 | struct nv_adma_cpb *cpb; | |
215 | dma_addr_t cpb_dma; | |
216 | struct nv_adma_prd *aprd; | |
217 | dma_addr_t aprd_dma; | |
cdf56bcf RH |
218 | void __iomem * ctl_block; |
219 | void __iomem * gen_block; | |
220 | void __iomem * notifier_clear_block; | |
fbbb262d | 221 | u8 flags; |
5e5c74a5 | 222 | int last_issue_ncq; |
fbbb262d RH |
223 | }; |
224 | ||
cdf56bcf RH |
225 | struct nv_host_priv { |
226 | unsigned long type; | |
227 | }; | |
228 | ||
fbbb262d RH |
229 | #define NV_ADMA_CHECK_INTR(GCTL, PORT) ((GCTL) & ( 1 << (19 + (12 * (PORT))))) |
230 | ||
1da177e4 | 231 | static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); |
cdf56bcf RH |
232 | static void nv_remove_one (struct pci_dev *pdev); |
233 | static int nv_pci_device_resume(struct pci_dev *pdev); | |
cca3974e | 234 | static void nv_ck804_host_stop(struct ata_host *host); |
7d12e780 DH |
235 | static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance); |
236 | static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance); | |
237 | static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance); | |
1da177e4 LT |
238 | static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg); |
239 | static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); | |
1da177e4 | 240 | |
39f87582 TH |
241 | static void nv_nf2_freeze(struct ata_port *ap); |
242 | static void nv_nf2_thaw(struct ata_port *ap); | |
243 | static void nv_ck804_freeze(struct ata_port *ap); | |
244 | static void nv_ck804_thaw(struct ata_port *ap); | |
245 | static void nv_error_handler(struct ata_port *ap); | |
fbbb262d | 246 | static int nv_adma_slave_config(struct scsi_device *sdev); |
2dec7555 | 247 | static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc); |
fbbb262d RH |
248 | static void nv_adma_qc_prep(struct ata_queued_cmd *qc); |
249 | static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc); | |
250 | static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance); | |
251 | static void nv_adma_irq_clear(struct ata_port *ap); | |
252 | static int nv_adma_port_start(struct ata_port *ap); | |
253 | static void nv_adma_port_stop(struct ata_port *ap); | |
cdf56bcf RH |
254 | static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg); |
255 | static int nv_adma_port_resume(struct ata_port *ap); | |
fbbb262d RH |
256 | static void nv_adma_error_handler(struct ata_port *ap); |
257 | static void nv_adma_host_stop(struct ata_host *host); | |
258 | static void nv_adma_bmdma_setup(struct ata_queued_cmd *qc); | |
259 | static void nv_adma_bmdma_start(struct ata_queued_cmd *qc); | |
260 | static void nv_adma_bmdma_stop(struct ata_queued_cmd *qc); | |
261 | static u8 nv_adma_bmdma_status(struct ata_port *ap); | |
39f87582 | 262 | |
1da177e4 LT |
263 | enum nv_host_type |
264 | { | |
265 | GENERIC, | |
266 | NFORCE2, | |
27e4b274 | 267 | NFORCE3 = NFORCE2, /* NF2 == NF3 as far as sata_nv is concerned */ |
fbbb262d RH |
268 | CK804, |
269 | ADMA | |
1da177e4 LT |
270 | }; |
271 | ||
3b7d697d | 272 | static const struct pci_device_id nv_pci_tbl[] = { |
54bb3a94 JG |
273 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), NFORCE2 }, |
274 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), NFORCE3 }, | |
275 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), NFORCE3 }, | |
276 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA), CK804 }, | |
277 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2), CK804 }, | |
278 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA), CK804 }, | |
279 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2), CK804 }, | |
280 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA), GENERIC }, | |
281 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2), GENERIC }, | |
282 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA), GENERIC }, | |
283 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SATA2), GENERIC }, | |
284 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA), GENERIC }, | |
285 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA2), GENERIC }, | |
286 | { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SATA3), GENERIC }, | |
1da177e4 LT |
287 | { PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, |
288 | PCI_ANY_ID, PCI_ANY_ID, | |
289 | PCI_CLASS_STORAGE_IDE<<8, 0xffff00, GENERIC }, | |
541134cf DD |
290 | { PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, |
291 | PCI_ANY_ID, PCI_ANY_ID, | |
292 | PCI_CLASS_STORAGE_RAID<<8, 0xffff00, GENERIC }, | |
2d2744fc JG |
293 | |
294 | { } /* terminate list */ | |
1da177e4 LT |
295 | }; |
296 | ||
1da177e4 LT |
297 | static struct pci_driver nv_pci_driver = { |
298 | .name = DRV_NAME, | |
299 | .id_table = nv_pci_tbl, | |
300 | .probe = nv_init_one, | |
cdf56bcf RH |
301 | .suspend = ata_pci_device_suspend, |
302 | .resume = nv_pci_device_resume, | |
303 | .remove = nv_remove_one, | |
1da177e4 LT |
304 | }; |
305 | ||
193515d5 | 306 | static struct scsi_host_template nv_sht = { |
1da177e4 LT |
307 | .module = THIS_MODULE, |
308 | .name = DRV_NAME, | |
309 | .ioctl = ata_scsi_ioctl, | |
310 | .queuecommand = ata_scsi_queuecmd, | |
1da177e4 LT |
311 | .can_queue = ATA_DEF_QUEUE, |
312 | .this_id = ATA_SHT_THIS_ID, | |
313 | .sg_tablesize = LIBATA_MAX_PRD, | |
1da177e4 LT |
314 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
315 | .emulated = ATA_SHT_EMULATED, | |
316 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
317 | .proc_name = DRV_NAME, | |
318 | .dma_boundary = ATA_DMA_BOUNDARY, | |
319 | .slave_configure = ata_scsi_slave_config, | |
ccf68c34 | 320 | .slave_destroy = ata_scsi_slave_destroy, |
1da177e4 | 321 | .bios_param = ata_std_bios_param, |
cdf56bcf RH |
322 | .suspend = ata_scsi_device_suspend, |
323 | .resume = ata_scsi_device_resume, | |
1da177e4 LT |
324 | }; |
325 | ||
fbbb262d RH |
326 | static struct scsi_host_template nv_adma_sht = { |
327 | .module = THIS_MODULE, | |
328 | .name = DRV_NAME, | |
329 | .ioctl = ata_scsi_ioctl, | |
330 | .queuecommand = ata_scsi_queuecmd, | |
331 | .can_queue = NV_ADMA_MAX_CPBS, | |
332 | .this_id = ATA_SHT_THIS_ID, | |
333 | .sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN, | |
fbbb262d RH |
334 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
335 | .emulated = ATA_SHT_EMULATED, | |
336 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
337 | .proc_name = DRV_NAME, | |
338 | .dma_boundary = NV_ADMA_DMA_BOUNDARY, | |
339 | .slave_configure = nv_adma_slave_config, | |
340 | .slave_destroy = ata_scsi_slave_destroy, | |
341 | .bios_param = ata_std_bios_param, | |
cdf56bcf RH |
342 | .suspend = ata_scsi_device_suspend, |
343 | .resume = ata_scsi_device_resume, | |
fbbb262d RH |
344 | }; |
345 | ||
ada364e8 | 346 | static const struct ata_port_operations nv_generic_ops = { |
1da177e4 LT |
347 | .port_disable = ata_port_disable, |
348 | .tf_load = ata_tf_load, | |
349 | .tf_read = ata_tf_read, | |
350 | .exec_command = ata_exec_command, | |
351 | .check_status = ata_check_status, | |
352 | .dev_select = ata_std_dev_select, | |
1da177e4 LT |
353 | .bmdma_setup = ata_bmdma_setup, |
354 | .bmdma_start = ata_bmdma_start, | |
355 | .bmdma_stop = ata_bmdma_stop, | |
356 | .bmdma_status = ata_bmdma_status, | |
357 | .qc_prep = ata_qc_prep, | |
358 | .qc_issue = ata_qc_issue_prot, | |
39f87582 TH |
359 | .freeze = ata_bmdma_freeze, |
360 | .thaw = ata_bmdma_thaw, | |
361 | .error_handler = nv_error_handler, | |
362 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
0d5ff566 | 363 | .data_xfer = ata_data_xfer, |
ada364e8 | 364 | .irq_handler = nv_generic_interrupt, |
1da177e4 | 365 | .irq_clear = ata_bmdma_irq_clear, |
246ce3b6 AI |
366 | .irq_on = ata_irq_on, |
367 | .irq_ack = ata_irq_ack, | |
1da177e4 LT |
368 | .scr_read = nv_scr_read, |
369 | .scr_write = nv_scr_write, | |
370 | .port_start = ata_port_start, | |
1da177e4 LT |
371 | }; |
372 | ||
ada364e8 TH |
373 | static const struct ata_port_operations nv_nf2_ops = { |
374 | .port_disable = ata_port_disable, | |
375 | .tf_load = ata_tf_load, | |
376 | .tf_read = ata_tf_read, | |
377 | .exec_command = ata_exec_command, | |
378 | .check_status = ata_check_status, | |
379 | .dev_select = ata_std_dev_select, | |
ada364e8 TH |
380 | .bmdma_setup = ata_bmdma_setup, |
381 | .bmdma_start = ata_bmdma_start, | |
382 | .bmdma_stop = ata_bmdma_stop, | |
383 | .bmdma_status = ata_bmdma_status, | |
384 | .qc_prep = ata_qc_prep, | |
385 | .qc_issue = ata_qc_issue_prot, | |
39f87582 TH |
386 | .freeze = nv_nf2_freeze, |
387 | .thaw = nv_nf2_thaw, | |
388 | .error_handler = nv_error_handler, | |
389 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
0d5ff566 | 390 | .data_xfer = ata_data_xfer, |
ada364e8 TH |
391 | .irq_handler = nv_nf2_interrupt, |
392 | .irq_clear = ata_bmdma_irq_clear, | |
246ce3b6 AI |
393 | .irq_on = ata_irq_on, |
394 | .irq_ack = ata_irq_ack, | |
ada364e8 TH |
395 | .scr_read = nv_scr_read, |
396 | .scr_write = nv_scr_write, | |
397 | .port_start = ata_port_start, | |
ada364e8 TH |
398 | }; |
399 | ||
400 | static const struct ata_port_operations nv_ck804_ops = { | |
401 | .port_disable = ata_port_disable, | |
402 | .tf_load = ata_tf_load, | |
403 | .tf_read = ata_tf_read, | |
404 | .exec_command = ata_exec_command, | |
405 | .check_status = ata_check_status, | |
406 | .dev_select = ata_std_dev_select, | |
ada364e8 TH |
407 | .bmdma_setup = ata_bmdma_setup, |
408 | .bmdma_start = ata_bmdma_start, | |
409 | .bmdma_stop = ata_bmdma_stop, | |
410 | .bmdma_status = ata_bmdma_status, | |
411 | .qc_prep = ata_qc_prep, | |
412 | .qc_issue = ata_qc_issue_prot, | |
39f87582 TH |
413 | .freeze = nv_ck804_freeze, |
414 | .thaw = nv_ck804_thaw, | |
415 | .error_handler = nv_error_handler, | |
416 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
0d5ff566 | 417 | .data_xfer = ata_data_xfer, |
ada364e8 TH |
418 | .irq_handler = nv_ck804_interrupt, |
419 | .irq_clear = ata_bmdma_irq_clear, | |
246ce3b6 AI |
420 | .irq_on = ata_irq_on, |
421 | .irq_ack = ata_irq_ack, | |
ada364e8 TH |
422 | .scr_read = nv_scr_read, |
423 | .scr_write = nv_scr_write, | |
424 | .port_start = ata_port_start, | |
ada364e8 TH |
425 | .host_stop = nv_ck804_host_stop, |
426 | }; | |
427 | ||
fbbb262d RH |
428 | static const struct ata_port_operations nv_adma_ops = { |
429 | .port_disable = ata_port_disable, | |
430 | .tf_load = ata_tf_load, | |
431 | .tf_read = ata_tf_read, | |
2dec7555 | 432 | .check_atapi_dma = nv_adma_check_atapi_dma, |
fbbb262d RH |
433 | .exec_command = ata_exec_command, |
434 | .check_status = ata_check_status, | |
435 | .dev_select = ata_std_dev_select, | |
436 | .bmdma_setup = nv_adma_bmdma_setup, | |
437 | .bmdma_start = nv_adma_bmdma_start, | |
438 | .bmdma_stop = nv_adma_bmdma_stop, | |
439 | .bmdma_status = nv_adma_bmdma_status, | |
440 | .qc_prep = nv_adma_qc_prep, | |
441 | .qc_issue = nv_adma_qc_issue, | |
442 | .freeze = nv_ck804_freeze, | |
443 | .thaw = nv_ck804_thaw, | |
444 | .error_handler = nv_adma_error_handler, | |
445 | .post_internal_cmd = nv_adma_bmdma_stop, | |
0d5ff566 | 446 | .data_xfer = ata_data_xfer, |
fbbb262d RH |
447 | .irq_handler = nv_adma_interrupt, |
448 | .irq_clear = nv_adma_irq_clear, | |
246ce3b6 AI |
449 | .irq_on = ata_irq_on, |
450 | .irq_ack = ata_irq_ack, | |
fbbb262d RH |
451 | .scr_read = nv_scr_read, |
452 | .scr_write = nv_scr_write, | |
453 | .port_start = nv_adma_port_start, | |
454 | .port_stop = nv_adma_port_stop, | |
cdf56bcf RH |
455 | .port_suspend = nv_adma_port_suspend, |
456 | .port_resume = nv_adma_port_resume, | |
fbbb262d RH |
457 | .host_stop = nv_adma_host_stop, |
458 | }; | |
459 | ||
ada364e8 TH |
460 | static struct ata_port_info nv_port_info[] = { |
461 | /* generic */ | |
462 | { | |
463 | .sht = &nv_sht, | |
722420fe TH |
464 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
465 | ATA_FLAG_HRST_TO_RESUME, | |
ada364e8 TH |
466 | .pio_mask = NV_PIO_MASK, |
467 | .mwdma_mask = NV_MWDMA_MASK, | |
468 | .udma_mask = NV_UDMA_MASK, | |
469 | .port_ops = &nv_generic_ops, | |
470 | }, | |
471 | /* nforce2/3 */ | |
472 | { | |
473 | .sht = &nv_sht, | |
722420fe TH |
474 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
475 | ATA_FLAG_HRST_TO_RESUME, | |
ada364e8 TH |
476 | .pio_mask = NV_PIO_MASK, |
477 | .mwdma_mask = NV_MWDMA_MASK, | |
478 | .udma_mask = NV_UDMA_MASK, | |
479 | .port_ops = &nv_nf2_ops, | |
480 | }, | |
481 | /* ck804 */ | |
482 | { | |
483 | .sht = &nv_sht, | |
722420fe TH |
484 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
485 | ATA_FLAG_HRST_TO_RESUME, | |
ada364e8 TH |
486 | .pio_mask = NV_PIO_MASK, |
487 | .mwdma_mask = NV_MWDMA_MASK, | |
488 | .udma_mask = NV_UDMA_MASK, | |
489 | .port_ops = &nv_ck804_ops, | |
490 | }, | |
fbbb262d RH |
491 | /* ADMA */ |
492 | { | |
493 | .sht = &nv_adma_sht, | |
494 | .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | | |
cdf56bcf | 495 | ATA_FLAG_HRST_TO_RESUME | |
fbbb262d RH |
496 | ATA_FLAG_MMIO | ATA_FLAG_NCQ, |
497 | .pio_mask = NV_PIO_MASK, | |
498 | .mwdma_mask = NV_MWDMA_MASK, | |
499 | .udma_mask = NV_UDMA_MASK, | |
500 | .port_ops = &nv_adma_ops, | |
501 | }, | |
1da177e4 LT |
502 | }; |
503 | ||
504 | MODULE_AUTHOR("NVIDIA"); | |
505 | MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller"); | |
506 | MODULE_LICENSE("GPL"); | |
507 | MODULE_DEVICE_TABLE(pci, nv_pci_tbl); | |
508 | MODULE_VERSION(DRV_VERSION); | |
509 | ||
fbbb262d RH |
510 | static int adma_enabled = 1; |
511 | ||
2dec7555 RH |
512 | static void nv_adma_register_mode(struct ata_port *ap) |
513 | { | |
2dec7555 | 514 | struct nv_adma_port_priv *pp = ap->private_data; |
cdf56bcf | 515 | void __iomem *mmio = pp->ctl_block; |
a2cfe81a RH |
516 | u16 tmp, status; |
517 | int count = 0; | |
2dec7555 RH |
518 | |
519 | if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) | |
520 | return; | |
521 | ||
a2cfe81a RH |
522 | status = readw(mmio + NV_ADMA_STAT); |
523 | while(!(status & NV_ADMA_STAT_IDLE) && count < 20) { | |
524 | ndelay(50); | |
525 | status = readw(mmio + NV_ADMA_STAT); | |
526 | count++; | |
527 | } | |
528 | if(count == 20) | |
529 | ata_port_printk(ap, KERN_WARNING, | |
530 | "timeout waiting for ADMA IDLE, stat=0x%hx\n", | |
531 | status); | |
532 | ||
2dec7555 RH |
533 | tmp = readw(mmio + NV_ADMA_CTL); |
534 | writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL); | |
535 | ||
a2cfe81a RH |
536 | count = 0; |
537 | status = readw(mmio + NV_ADMA_STAT); | |
538 | while(!(status & NV_ADMA_STAT_LEGACY) && count < 20) { | |
539 | ndelay(50); | |
540 | status = readw(mmio + NV_ADMA_STAT); | |
541 | count++; | |
542 | } | |
543 | if(count == 20) | |
544 | ata_port_printk(ap, KERN_WARNING, | |
545 | "timeout waiting for ADMA LEGACY, stat=0x%hx\n", | |
546 | status); | |
547 | ||
2dec7555 RH |
548 | pp->flags |= NV_ADMA_PORT_REGISTER_MODE; |
549 | } | |
550 | ||
551 | static void nv_adma_mode(struct ata_port *ap) | |
552 | { | |
2dec7555 | 553 | struct nv_adma_port_priv *pp = ap->private_data; |
cdf56bcf | 554 | void __iomem *mmio = pp->ctl_block; |
a2cfe81a RH |
555 | u16 tmp, status; |
556 | int count = 0; | |
2dec7555 RH |
557 | |
558 | if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) | |
559 | return; | |
f20b16ff | 560 | |
2dec7555 RH |
561 | WARN_ON(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE); |
562 | ||
563 | tmp = readw(mmio + NV_ADMA_CTL); | |
564 | writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL); | |
565 | ||
a2cfe81a RH |
566 | status = readw(mmio + NV_ADMA_STAT); |
567 | while(((status & NV_ADMA_STAT_LEGACY) || | |
568 | !(status & NV_ADMA_STAT_IDLE)) && count < 20) { | |
569 | ndelay(50); | |
570 | status = readw(mmio + NV_ADMA_STAT); | |
571 | count++; | |
572 | } | |
573 | if(count == 20) | |
574 | ata_port_printk(ap, KERN_WARNING, | |
575 | "timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n", | |
576 | status); | |
577 | ||
2dec7555 RH |
578 | pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE; |
579 | } | |
580 | ||
fbbb262d RH |
581 | static int nv_adma_slave_config(struct scsi_device *sdev) |
582 | { | |
583 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
2dec7555 RH |
584 | struct nv_adma_port_priv *pp = ap->private_data; |
585 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
fbbb262d RH |
586 | u64 bounce_limit; |
587 | unsigned long segment_boundary; | |
588 | unsigned short sg_tablesize; | |
589 | int rc; | |
2dec7555 RH |
590 | int adma_enable; |
591 | u32 current_reg, new_reg, config_mask; | |
fbbb262d RH |
592 | |
593 | rc = ata_scsi_slave_config(sdev); | |
594 | ||
595 | if (sdev->id >= ATA_MAX_DEVICES || sdev->channel || sdev->lun) | |
596 | /* Not a proper libata device, ignore */ | |
597 | return rc; | |
598 | ||
599 | if (ap->device[sdev->id].class == ATA_DEV_ATAPI) { | |
600 | /* | |
601 | * NVIDIA reports that ADMA mode does not support ATAPI commands. | |
602 | * Therefore ATAPI commands are sent through the legacy interface. | |
603 | * However, the legacy interface only supports 32-bit DMA. | |
604 | * Restrict DMA parameters as required by the legacy interface | |
605 | * when an ATAPI device is connected. | |
606 | */ | |
607 | bounce_limit = ATA_DMA_MASK; | |
608 | segment_boundary = ATA_DMA_BOUNDARY; | |
609 | /* Subtract 1 since an extra entry may be needed for padding, see | |
610 | libata-scsi.c */ | |
611 | sg_tablesize = LIBATA_MAX_PRD - 1; | |
f20b16ff | 612 | |
2dec7555 RH |
613 | /* Since the legacy DMA engine is in use, we need to disable ADMA |
614 | on the port. */ | |
615 | adma_enable = 0; | |
616 | nv_adma_register_mode(ap); | |
fbbb262d RH |
617 | } |
618 | else { | |
619 | bounce_limit = *ap->dev->dma_mask; | |
620 | segment_boundary = NV_ADMA_DMA_BOUNDARY; | |
621 | sg_tablesize = NV_ADMA_SGTBL_TOTAL_LEN; | |
2dec7555 | 622 | adma_enable = 1; |
fbbb262d | 623 | } |
f20b16ff | 624 | |
2dec7555 RH |
625 | pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, ¤t_reg); |
626 | ||
627 | if(ap->port_no == 1) | |
628 | config_mask = NV_MCP_SATA_CFG_20_PORT1_EN | | |
629 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN; | |
630 | else | |
631 | config_mask = NV_MCP_SATA_CFG_20_PORT0_EN | | |
632 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN; | |
f20b16ff | 633 | |
2dec7555 RH |
634 | if(adma_enable) { |
635 | new_reg = current_reg | config_mask; | |
636 | pp->flags &= ~NV_ADMA_ATAPI_SETUP_COMPLETE; | |
637 | } | |
638 | else { | |
639 | new_reg = current_reg & ~config_mask; | |
640 | pp->flags |= NV_ADMA_ATAPI_SETUP_COMPLETE; | |
641 | } | |
f20b16ff | 642 | |
2dec7555 RH |
643 | if(current_reg != new_reg) |
644 | pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, new_reg); | |
f20b16ff | 645 | |
fbbb262d RH |
646 | blk_queue_bounce_limit(sdev->request_queue, bounce_limit); |
647 | blk_queue_segment_boundary(sdev->request_queue, segment_boundary); | |
648 | blk_queue_max_hw_segments(sdev->request_queue, sg_tablesize); | |
649 | ata_port_printk(ap, KERN_INFO, | |
650 | "bounce limit 0x%llX, segment boundary 0x%lX, hw segs %hu\n", | |
651 | (unsigned long long)bounce_limit, segment_boundary, sg_tablesize); | |
652 | return rc; | |
653 | } | |
654 | ||
2dec7555 RH |
655 | static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc) |
656 | { | |
657 | struct nv_adma_port_priv *pp = qc->ap->private_data; | |
658 | return !(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE); | |
659 | } | |
660 | ||
661 | static unsigned int nv_adma_tf_to_cpb(struct ata_taskfile *tf, __le16 *cpb) | |
fbbb262d RH |
662 | { |
663 | unsigned int idx = 0; | |
664 | ||
665 | cpb[idx++] = cpu_to_le16((ATA_REG_DEVICE << 8) | tf->device | WNB); | |
666 | ||
667 | if ((tf->flags & ATA_TFLAG_LBA48) == 0) { | |
668 | cpb[idx++] = cpu_to_le16(IGN); | |
669 | cpb[idx++] = cpu_to_le16(IGN); | |
670 | cpb[idx++] = cpu_to_le16(IGN); | |
671 | cpb[idx++] = cpu_to_le16(IGN); | |
672 | cpb[idx++] = cpu_to_le16(IGN); | |
673 | } | |
674 | else { | |
675 | cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->hob_feature); | |
676 | cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->hob_nsect); | |
677 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->hob_lbal); | |
678 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->hob_lbam); | |
679 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->hob_lbah); | |
680 | } | |
681 | cpb[idx++] = cpu_to_le16((ATA_REG_ERR << 8) | tf->feature); | |
682 | cpb[idx++] = cpu_to_le16((ATA_REG_NSECT << 8) | tf->nsect); | |
683 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAL << 8) | tf->lbal); | |
684 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAM << 8) | tf->lbam); | |
685 | cpb[idx++] = cpu_to_le16((ATA_REG_LBAH << 8) | tf->lbah); | |
686 | ||
687 | cpb[idx++] = cpu_to_le16((ATA_REG_CMD << 8) | tf->command | CMDEND); | |
688 | ||
689 | return idx; | |
690 | } | |
691 | ||
5bd28a4b | 692 | static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err) |
fbbb262d RH |
693 | { |
694 | struct nv_adma_port_priv *pp = ap->private_data; | |
2dec7555 | 695 | u8 flags = pp->cpb[cpb_num].resp_flags; |
fbbb262d RH |
696 | |
697 | VPRINTK("CPB %d, flags=0x%x\n", cpb_num, flags); | |
698 | ||
5bd28a4b RH |
699 | if (unlikely((force_err || |
700 | flags & (NV_CPB_RESP_ATA_ERR | | |
701 | NV_CPB_RESP_CMD_ERR | | |
702 | NV_CPB_RESP_CPB_ERR)))) { | |
703 | struct ata_eh_info *ehi = &ap->eh_info; | |
704 | int freeze = 0; | |
705 | ||
706 | ata_ehi_clear_desc(ehi); | |
707 | ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x", flags ); | |
708 | if (flags & NV_CPB_RESP_ATA_ERR) { | |
709 | ata_ehi_push_desc(ehi, ": ATA error"); | |
710 | ehi->err_mask |= AC_ERR_DEV; | |
711 | } else if (flags & NV_CPB_RESP_CMD_ERR) { | |
712 | ata_ehi_push_desc(ehi, ": CMD error"); | |
713 | ehi->err_mask |= AC_ERR_DEV; | |
714 | } else if (flags & NV_CPB_RESP_CPB_ERR) { | |
715 | ata_ehi_push_desc(ehi, ": CPB error"); | |
716 | ehi->err_mask |= AC_ERR_SYSTEM; | |
717 | freeze = 1; | |
718 | } else { | |
719 | /* notifier error, but no error in CPB flags? */ | |
720 | ehi->err_mask |= AC_ERR_OTHER; | |
721 | freeze = 1; | |
722 | } | |
723 | /* Kill all commands. EH will determine what actually failed. */ | |
724 | if (freeze) | |
725 | ata_port_freeze(ap); | |
726 | else | |
727 | ata_port_abort(ap); | |
728 | return 1; | |
fbbb262d | 729 | } |
5bd28a4b RH |
730 | |
731 | if (flags & NV_CPB_RESP_DONE) { | |
fbbb262d | 732 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, cpb_num); |
5bd28a4b RH |
733 | VPRINTK("CPB flags done, flags=0x%x\n", flags); |
734 | if (likely(qc)) { | |
735 | /* Grab the ATA port status for non-NCQ commands. | |
fbbb262d RH |
736 | For NCQ commands the current status may have nothing to do with |
737 | the command just completed. */ | |
5bd28a4b RH |
738 | if (qc->tf.protocol != ATA_PROT_NCQ) { |
739 | u8 ata_status = readb(pp->ctl_block + (ATA_REG_STATUS * 4)); | |
740 | qc->err_mask |= ac_err_mask(ata_status); | |
741 | } | |
fbbb262d RH |
742 | DPRINTK("Completing qc from tag %d with err_mask %u\n",cpb_num, |
743 | qc->err_mask); | |
744 | ata_qc_complete(qc); | |
745 | } | |
746 | } | |
5bd28a4b | 747 | return 0; |
fbbb262d RH |
748 | } |
749 | ||
2dec7555 RH |
750 | static int nv_host_intr(struct ata_port *ap, u8 irq_stat) |
751 | { | |
752 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag); | |
2dec7555 RH |
753 | |
754 | /* freeze if hotplugged */ | |
755 | if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) { | |
756 | ata_port_freeze(ap); | |
757 | return 1; | |
758 | } | |
759 | ||
760 | /* bail out if not our interrupt */ | |
761 | if (!(irq_stat & NV_INT_DEV)) | |
762 | return 0; | |
763 | ||
764 | /* DEV interrupt w/ no active qc? */ | |
765 | if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) { | |
766 | ata_check_status(ap); | |
767 | return 1; | |
768 | } | |
769 | ||
770 | /* handle interrupt */ | |
f740d168 | 771 | return ata_host_intr(ap, qc); |
2dec7555 RH |
772 | } |
773 | ||
fbbb262d RH |
774 | static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance) |
775 | { | |
776 | struct ata_host *host = dev_instance; | |
777 | int i, handled = 0; | |
2dec7555 | 778 | u32 notifier_clears[2]; |
fbbb262d RH |
779 | |
780 | spin_lock(&host->lock); | |
781 | ||
782 | for (i = 0; i < host->n_ports; i++) { | |
783 | struct ata_port *ap = host->ports[i]; | |
2dec7555 | 784 | notifier_clears[i] = 0; |
fbbb262d RH |
785 | |
786 | if (ap && !(ap->flags & ATA_FLAG_DISABLED)) { | |
787 | struct nv_adma_port_priv *pp = ap->private_data; | |
cdf56bcf | 788 | void __iomem *mmio = pp->ctl_block; |
fbbb262d RH |
789 | u16 status; |
790 | u32 gen_ctl; | |
fbbb262d RH |
791 | u32 notifier, notifier_error; |
792 | ||
793 | /* if in ATA register mode, use standard ata interrupt handler */ | |
794 | if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) { | |
0d5ff566 | 795 | u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804) |
2dec7555 | 796 | >> (NV_INT_PORT_SHIFT * i); |
f740d168 RH |
797 | if(ata_tag_valid(ap->active_tag)) |
798 | /** NV_INT_DEV indication seems unreliable at times | |
799 | at least in ADMA mode. Force it on always when a | |
800 | command is active, to prevent losing interrupts. */ | |
801 | irq_stat |= NV_INT_DEV; | |
2dec7555 | 802 | handled += nv_host_intr(ap, irq_stat); |
fbbb262d RH |
803 | continue; |
804 | } | |
805 | ||
806 | notifier = readl(mmio + NV_ADMA_NOTIFIER); | |
807 | notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR); | |
2dec7555 | 808 | notifier_clears[i] = notifier | notifier_error; |
fbbb262d | 809 | |
cdf56bcf | 810 | gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL); |
fbbb262d | 811 | |
fbbb262d RH |
812 | if( !NV_ADMA_CHECK_INTR(gen_ctl, ap->port_no) && !notifier && |
813 | !notifier_error) | |
814 | /* Nothing to do */ | |
815 | continue; | |
816 | ||
817 | status = readw(mmio + NV_ADMA_STAT); | |
818 | ||
819 | /* Clear status. Ensure the controller sees the clearing before we start | |
820 | looking at any of the CPB statuses, so that any CPB completions after | |
821 | this point in the handler will raise another interrupt. */ | |
822 | writew(status, mmio + NV_ADMA_STAT); | |
823 | readw(mmio + NV_ADMA_STAT); /* flush posted write */ | |
824 | rmb(); | |
825 | ||
5bd28a4b RH |
826 | handled++; /* irq handled if we got here */ |
827 | ||
828 | /* freeze if hotplugged or controller error */ | |
829 | if (unlikely(status & (NV_ADMA_STAT_HOTPLUG | | |
830 | NV_ADMA_STAT_HOTUNPLUG | | |
5278b50c RH |
831 | NV_ADMA_STAT_TIMEOUT | |
832 | NV_ADMA_STAT_SERROR))) { | |
5bd28a4b RH |
833 | struct ata_eh_info *ehi = &ap->eh_info; |
834 | ||
835 | ata_ehi_clear_desc(ehi); | |
836 | ata_ehi_push_desc(ehi, "ADMA status 0x%08x", status ); | |
837 | if (status & NV_ADMA_STAT_TIMEOUT) { | |
838 | ehi->err_mask |= AC_ERR_SYSTEM; | |
839 | ata_ehi_push_desc(ehi, ": timeout"); | |
840 | } else if (status & NV_ADMA_STAT_HOTPLUG) { | |
841 | ata_ehi_hotplugged(ehi); | |
842 | ata_ehi_push_desc(ehi, ": hotplug"); | |
843 | } else if (status & NV_ADMA_STAT_HOTUNPLUG) { | |
844 | ata_ehi_hotplugged(ehi); | |
845 | ata_ehi_push_desc(ehi, ": hot unplug"); | |
5278b50c RH |
846 | } else if (status & NV_ADMA_STAT_SERROR) { |
847 | /* let libata analyze SError and figure out the cause */ | |
848 | ata_ehi_push_desc(ehi, ": SError"); | |
5bd28a4b | 849 | } |
fbbb262d | 850 | ata_port_freeze(ap); |
fbbb262d RH |
851 | continue; |
852 | } | |
853 | ||
5bd28a4b RH |
854 | if (status & (NV_ADMA_STAT_DONE | |
855 | NV_ADMA_STAT_CPBERR)) { | |
fbbb262d RH |
856 | /** Check CPBs for completed commands */ |
857 | ||
5bd28a4b | 858 | if (ata_tag_valid(ap->active_tag)) { |
fbbb262d | 859 | /* Non-NCQ command */ |
5bd28a4b RH |
860 | nv_adma_check_cpb(ap, ap->active_tag, |
861 | notifier_error & (1 << ap->active_tag)); | |
862 | } else { | |
863 | int pos, error = 0; | |
fbbb262d | 864 | u32 active = ap->sactive; |
5bd28a4b RH |
865 | |
866 | while ((pos = ffs(active)) && !error) { | |
fbbb262d | 867 | pos--; |
5bd28a4b RH |
868 | error = nv_adma_check_cpb(ap, pos, |
869 | notifier_error & (1 << pos) ); | |
fbbb262d RH |
870 | active &= ~(1 << pos ); |
871 | } | |
872 | } | |
873 | } | |
fbbb262d RH |
874 | } |
875 | } | |
f20b16ff | 876 | |
2dec7555 RH |
877 | if(notifier_clears[0] || notifier_clears[1]) { |
878 | /* Note: Both notifier clear registers must be written | |
879 | if either is set, even if one is zero, according to NVIDIA. */ | |
cdf56bcf RH |
880 | struct nv_adma_port_priv *pp = host->ports[0]->private_data; |
881 | writel(notifier_clears[0], pp->notifier_clear_block); | |
882 | pp = host->ports[1]->private_data; | |
883 | writel(notifier_clears[1], pp->notifier_clear_block); | |
2dec7555 | 884 | } |
fbbb262d RH |
885 | |
886 | spin_unlock(&host->lock); | |
887 | ||
888 | return IRQ_RETVAL(handled); | |
889 | } | |
890 | ||
891 | static void nv_adma_irq_clear(struct ata_port *ap) | |
892 | { | |
cdf56bcf RH |
893 | struct nv_adma_port_priv *pp = ap->private_data; |
894 | void __iomem *mmio = pp->ctl_block; | |
fbbb262d RH |
895 | u16 status = readw(mmio + NV_ADMA_STAT); |
896 | u32 notifier = readl(mmio + NV_ADMA_NOTIFIER); | |
897 | u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR); | |
0d5ff566 | 898 | void __iomem *dma_stat_addr = ap->ioaddr.bmdma_addr + ATA_DMA_STATUS; |
fbbb262d RH |
899 | |
900 | /* clear ADMA status */ | |
901 | writew(status, mmio + NV_ADMA_STAT); | |
902 | writel(notifier | notifier_error, | |
cdf56bcf | 903 | pp->notifier_clear_block); |
fbbb262d RH |
904 | |
905 | /** clear legacy status */ | |
0d5ff566 | 906 | iowrite8(ioread8(dma_stat_addr), dma_stat_addr); |
fbbb262d RH |
907 | } |
908 | ||
909 | static void nv_adma_bmdma_setup(struct ata_queued_cmd *qc) | |
910 | { | |
2dec7555 RH |
911 | struct ata_port *ap = qc->ap; |
912 | unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); | |
913 | struct nv_adma_port_priv *pp = ap->private_data; | |
914 | u8 dmactl; | |
fbbb262d | 915 | |
2dec7555 | 916 | if(!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) { |
fbbb262d RH |
917 | WARN_ON(1); |
918 | return; | |
919 | } | |
920 | ||
2dec7555 | 921 | /* load PRD table addr. */ |
0d5ff566 | 922 | iowrite32(ap->prd_dma, ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS); |
2dec7555 RH |
923 | |
924 | /* specify data direction, triple-check start bit is clear */ | |
0d5ff566 | 925 | dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD); |
2dec7555 RH |
926 | dmactl &= ~(ATA_DMA_WR | ATA_DMA_START); |
927 | if (!rw) | |
928 | dmactl |= ATA_DMA_WR; | |
929 | ||
0d5ff566 | 930 | iowrite8(dmactl, ap->ioaddr.bmdma_addr + ATA_DMA_CMD); |
2dec7555 RH |
931 | |
932 | /* issue r/w command */ | |
933 | ata_exec_command(ap, &qc->tf); | |
fbbb262d RH |
934 | } |
935 | ||
936 | static void nv_adma_bmdma_start(struct ata_queued_cmd *qc) | |
937 | { | |
2dec7555 RH |
938 | struct ata_port *ap = qc->ap; |
939 | struct nv_adma_port_priv *pp = ap->private_data; | |
940 | u8 dmactl; | |
fbbb262d | 941 | |
2dec7555 | 942 | if(!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) { |
fbbb262d RH |
943 | WARN_ON(1); |
944 | return; | |
945 | } | |
946 | ||
2dec7555 | 947 | /* start host DMA transaction */ |
0d5ff566 TH |
948 | dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD); |
949 | iowrite8(dmactl | ATA_DMA_START, | |
950 | ap->ioaddr.bmdma_addr + ATA_DMA_CMD); | |
fbbb262d RH |
951 | } |
952 | ||
953 | static void nv_adma_bmdma_stop(struct ata_queued_cmd *qc) | |
954 | { | |
2dec7555 | 955 | struct ata_port *ap = qc->ap; |
fbbb262d RH |
956 | struct nv_adma_port_priv *pp = ap->private_data; |
957 | ||
2dec7555 | 958 | if(!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) |
fbbb262d RH |
959 | return; |
960 | ||
2dec7555 | 961 | /* clear start/stop bit */ |
0d5ff566 TH |
962 | iowrite8(ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD) & ~ATA_DMA_START, |
963 | ap->ioaddr.bmdma_addr + ATA_DMA_CMD); | |
fbbb262d | 964 | |
2dec7555 RH |
965 | /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */ |
966 | ata_altstatus(ap); /* dummy read */ | |
fbbb262d RH |
967 | } |
968 | ||
2dec7555 | 969 | static u8 nv_adma_bmdma_status(struct ata_port *ap) |
fbbb262d | 970 | { |
fbbb262d | 971 | struct nv_adma_port_priv *pp = ap->private_data; |
fbbb262d | 972 | |
2dec7555 | 973 | WARN_ON(!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)); |
fbbb262d | 974 | |
0d5ff566 | 975 | return ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); |
fbbb262d RH |
976 | } |
977 | ||
978 | static int nv_adma_port_start(struct ata_port *ap) | |
979 | { | |
980 | struct device *dev = ap->host->dev; | |
981 | struct nv_adma_port_priv *pp; | |
982 | int rc; | |
983 | void *mem; | |
984 | dma_addr_t mem_dma; | |
cdf56bcf | 985 | void __iomem *mmio; |
fbbb262d RH |
986 | u16 tmp; |
987 | ||
988 | VPRINTK("ENTER\n"); | |
989 | ||
990 | rc = ata_port_start(ap); | |
991 | if (rc) | |
992 | return rc; | |
993 | ||
24dc5f33 TH |
994 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
995 | if (!pp) | |
996 | return -ENOMEM; | |
fbbb262d | 997 | |
0d5ff566 | 998 | mmio = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_PORT + |
cdf56bcf RH |
999 | ap->port_no * NV_ADMA_PORT_SIZE; |
1000 | pp->ctl_block = mmio; | |
0d5ff566 | 1001 | pp->gen_block = ap->host->iomap[NV_MMIO_BAR] + NV_ADMA_GEN; |
cdf56bcf RH |
1002 | pp->notifier_clear_block = pp->gen_block + |
1003 | NV_ADMA_NOTIFIER_CLEAR + (4 * ap->port_no); | |
1004 | ||
24dc5f33 TH |
1005 | mem = dmam_alloc_coherent(dev, NV_ADMA_PORT_PRIV_DMA_SZ, |
1006 | &mem_dma, GFP_KERNEL); | |
1007 | if (!mem) | |
1008 | return -ENOMEM; | |
fbbb262d RH |
1009 | memset(mem, 0, NV_ADMA_PORT_PRIV_DMA_SZ); |
1010 | ||
1011 | /* | |
1012 | * First item in chunk of DMA memory: | |
1013 | * 128-byte command parameter block (CPB) | |
1014 | * one for each command tag | |
1015 | */ | |
1016 | pp->cpb = mem; | |
1017 | pp->cpb_dma = mem_dma; | |
1018 | ||
1019 | writel(mem_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW); | |
1020 | writel((mem_dma >> 16 ) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH); | |
1021 | ||
1022 | mem += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ; | |
1023 | mem_dma += NV_ADMA_MAX_CPBS * NV_ADMA_CPB_SZ; | |
1024 | ||
1025 | /* | |
1026 | * Second item: block of ADMA_SGTBL_LEN s/g entries | |
1027 | */ | |
1028 | pp->aprd = mem; | |
1029 | pp->aprd_dma = mem_dma; | |
1030 | ||
1031 | ap->private_data = pp; | |
1032 | ||
1033 | /* clear any outstanding interrupt conditions */ | |
1034 | writew(0xffff, mmio + NV_ADMA_STAT); | |
1035 | ||
1036 | /* initialize port variables */ | |
1037 | pp->flags = NV_ADMA_PORT_REGISTER_MODE; | |
1038 | ||
1039 | /* clear CPB fetch count */ | |
1040 | writew(0, mmio + NV_ADMA_CPB_COUNT); | |
1041 | ||
cdf56bcf | 1042 | /* clear GO for register mode, enable interrupt */ |
fbbb262d | 1043 | tmp = readw(mmio + NV_ADMA_CTL); |
cdf56bcf | 1044 | writew( (tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN, mmio + NV_ADMA_CTL); |
fbbb262d RH |
1045 | |
1046 | tmp = readw(mmio + NV_ADMA_CTL); | |
1047 | writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
1048 | readl( mmio + NV_ADMA_CTL ); /* flush posted write */ | |
1049 | udelay(1); | |
1050 | writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
1051 | readl( mmio + NV_ADMA_CTL ); /* flush posted write */ | |
1052 | ||
1053 | return 0; | |
fbbb262d RH |
1054 | } |
1055 | ||
1056 | static void nv_adma_port_stop(struct ata_port *ap) | |
1057 | { | |
fbbb262d | 1058 | struct nv_adma_port_priv *pp = ap->private_data; |
cdf56bcf | 1059 | void __iomem *mmio = pp->ctl_block; |
fbbb262d RH |
1060 | |
1061 | VPRINTK("ENTER\n"); | |
fbbb262d | 1062 | writew(0, mmio + NV_ADMA_CTL); |
fbbb262d RH |
1063 | } |
1064 | ||
cdf56bcf RH |
1065 | static int nv_adma_port_suspend(struct ata_port *ap, pm_message_t mesg) |
1066 | { | |
1067 | struct nv_adma_port_priv *pp = ap->private_data; | |
1068 | void __iomem *mmio = pp->ctl_block; | |
1069 | ||
1070 | /* Go to register mode - clears GO */ | |
1071 | nv_adma_register_mode(ap); | |
1072 | ||
1073 | /* clear CPB fetch count */ | |
1074 | writew(0, mmio + NV_ADMA_CPB_COUNT); | |
1075 | ||
1076 | /* disable interrupt, shut down port */ | |
1077 | writew(0, mmio + NV_ADMA_CTL); | |
1078 | ||
1079 | return 0; | |
1080 | } | |
1081 | ||
1082 | static int nv_adma_port_resume(struct ata_port *ap) | |
1083 | { | |
1084 | struct nv_adma_port_priv *pp = ap->private_data; | |
1085 | void __iomem *mmio = pp->ctl_block; | |
1086 | u16 tmp; | |
1087 | ||
1088 | /* set CPB block location */ | |
1089 | writel(pp->cpb_dma & 0xFFFFFFFF, mmio + NV_ADMA_CPB_BASE_LOW); | |
1090 | writel((pp->cpb_dma >> 16 ) >> 16, mmio + NV_ADMA_CPB_BASE_HIGH); | |
1091 | ||
1092 | /* clear any outstanding interrupt conditions */ | |
1093 | writew(0xffff, mmio + NV_ADMA_STAT); | |
1094 | ||
1095 | /* initialize port variables */ | |
1096 | pp->flags |= NV_ADMA_PORT_REGISTER_MODE; | |
1097 | ||
1098 | /* clear CPB fetch count */ | |
1099 | writew(0, mmio + NV_ADMA_CPB_COUNT); | |
1100 | ||
1101 | /* clear GO for register mode, enable interrupt */ | |
1102 | tmp = readw(mmio + NV_ADMA_CTL); | |
1103 | writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN, mmio + NV_ADMA_CTL); | |
1104 | ||
1105 | tmp = readw(mmio + NV_ADMA_CTL); | |
1106 | writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
1107 | readl( mmio + NV_ADMA_CTL ); /* flush posted write */ | |
1108 | udelay(1); | |
1109 | writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
1110 | readl( mmio + NV_ADMA_CTL ); /* flush posted write */ | |
1111 | ||
1112 | return 0; | |
1113 | } | |
fbbb262d RH |
1114 | |
1115 | static void nv_adma_setup_port(struct ata_probe_ent *probe_ent, unsigned int port) | |
1116 | { | |
0d5ff566 | 1117 | void __iomem *mmio = probe_ent->iomap[NV_MMIO_BAR]; |
fbbb262d RH |
1118 | struct ata_ioports *ioport = &probe_ent->port[port]; |
1119 | ||
1120 | VPRINTK("ENTER\n"); | |
1121 | ||
1122 | mmio += NV_ADMA_PORT + port * NV_ADMA_PORT_SIZE; | |
1123 | ||
0d5ff566 TH |
1124 | ioport->cmd_addr = mmio; |
1125 | ioport->data_addr = mmio + (ATA_REG_DATA * 4); | |
fbbb262d | 1126 | ioport->error_addr = |
0d5ff566 TH |
1127 | ioport->feature_addr = mmio + (ATA_REG_ERR * 4); |
1128 | ioport->nsect_addr = mmio + (ATA_REG_NSECT * 4); | |
1129 | ioport->lbal_addr = mmio + (ATA_REG_LBAL * 4); | |
1130 | ioport->lbam_addr = mmio + (ATA_REG_LBAM * 4); | |
1131 | ioport->lbah_addr = mmio + (ATA_REG_LBAH * 4); | |
1132 | ioport->device_addr = mmio + (ATA_REG_DEVICE * 4); | |
fbbb262d | 1133 | ioport->status_addr = |
0d5ff566 | 1134 | ioport->command_addr = mmio + (ATA_REG_STATUS * 4); |
fbbb262d | 1135 | ioport->altstatus_addr = |
0d5ff566 | 1136 | ioport->ctl_addr = mmio + 0x20; |
fbbb262d RH |
1137 | } |
1138 | ||
1139 | static int nv_adma_host_init(struct ata_probe_ent *probe_ent) | |
1140 | { | |
1141 | struct pci_dev *pdev = to_pci_dev(probe_ent->dev); | |
1142 | unsigned int i; | |
1143 | u32 tmp32; | |
1144 | ||
1145 | VPRINTK("ENTER\n"); | |
1146 | ||
1147 | /* enable ADMA on the ports */ | |
1148 | pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32); | |
1149 | tmp32 |= NV_MCP_SATA_CFG_20_PORT0_EN | | |
1150 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN | | |
1151 | NV_MCP_SATA_CFG_20_PORT1_EN | | |
1152 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN; | |
1153 | ||
1154 | pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32); | |
1155 | ||
1156 | for (i = 0; i < probe_ent->n_ports; i++) | |
1157 | nv_adma_setup_port(probe_ent, i); | |
1158 | ||
fbbb262d RH |
1159 | return 0; |
1160 | } | |
1161 | ||
1162 | static void nv_adma_fill_aprd(struct ata_queued_cmd *qc, | |
1163 | struct scatterlist *sg, | |
1164 | int idx, | |
1165 | struct nv_adma_prd *aprd) | |
1166 | { | |
41949ed5 | 1167 | u8 flags = 0; |
fbbb262d RH |
1168 | if (qc->tf.flags & ATA_TFLAG_WRITE) |
1169 | flags |= NV_APRD_WRITE; | |
1170 | if (idx == qc->n_elem - 1) | |
1171 | flags |= NV_APRD_END; | |
1172 | else if (idx != 4) | |
1173 | flags |= NV_APRD_CONT; | |
1174 | ||
1175 | aprd->addr = cpu_to_le64(((u64)sg_dma_address(sg))); | |
1176 | aprd->len = cpu_to_le32(((u32)sg_dma_len(sg))); /* len in bytes */ | |
2dec7555 | 1177 | aprd->flags = flags; |
41949ed5 | 1178 | aprd->packet_len = 0; |
fbbb262d RH |
1179 | } |
1180 | ||
1181 | static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb) | |
1182 | { | |
1183 | struct nv_adma_port_priv *pp = qc->ap->private_data; | |
1184 | unsigned int idx; | |
1185 | struct nv_adma_prd *aprd; | |
1186 | struct scatterlist *sg; | |
1187 | ||
1188 | VPRINTK("ENTER\n"); | |
1189 | ||
1190 | idx = 0; | |
1191 | ||
1192 | ata_for_each_sg(sg, qc) { | |
1193 | aprd = (idx < 5) ? &cpb->aprd[idx] : &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (idx-5)]; | |
1194 | nv_adma_fill_aprd(qc, sg, idx, aprd); | |
1195 | idx++; | |
1196 | } | |
1197 | if (idx > 5) | |
1198 | cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag))); | |
41949ed5 RH |
1199 | else |
1200 | cpb->next_aprd = cpu_to_le64(0); | |
fbbb262d RH |
1201 | } |
1202 | ||
382a6652 RH |
1203 | static int nv_adma_use_reg_mode(struct ata_queued_cmd *qc) |
1204 | { | |
1205 | struct nv_adma_port_priv *pp = qc->ap->private_data; | |
1206 | ||
1207 | /* ADMA engine can only be used for non-ATAPI DMA commands, | |
1208 | or interrupt-driven no-data commands. */ | |
1209 | if((pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) || | |
1210 | (qc->tf.flags & ATA_TFLAG_POLLING)) | |
1211 | return 1; | |
1212 | ||
1213 | if((qc->flags & ATA_QCFLAG_DMAMAP) || | |
1214 | (qc->tf.protocol == ATA_PROT_NODATA)) | |
1215 | return 0; | |
1216 | ||
1217 | return 1; | |
1218 | } | |
1219 | ||
fbbb262d RH |
1220 | static void nv_adma_qc_prep(struct ata_queued_cmd *qc) |
1221 | { | |
1222 | struct nv_adma_port_priv *pp = qc->ap->private_data; | |
1223 | struct nv_adma_cpb *cpb = &pp->cpb[qc->tag]; | |
1224 | u8 ctl_flags = NV_CPB_CTL_CPB_VALID | | |
fbbb262d RH |
1225 | NV_CPB_CTL_IEN; |
1226 | ||
382a6652 | 1227 | if (nv_adma_use_reg_mode(qc)) { |
2dec7555 | 1228 | nv_adma_register_mode(qc->ap); |
fbbb262d RH |
1229 | ata_qc_prep(qc); |
1230 | return; | |
1231 | } | |
1232 | ||
41949ed5 RH |
1233 | cpb->resp_flags = NV_CPB_RESP_DONE; |
1234 | wmb(); | |
1235 | cpb->ctl_flags = 0; | |
1236 | wmb(); | |
fbbb262d RH |
1237 | |
1238 | cpb->len = 3; | |
1239 | cpb->tag = qc->tag; | |
1240 | cpb->next_cpb_idx = 0; | |
1241 | ||
1242 | /* turn on NCQ flags for NCQ commands */ | |
1243 | if (qc->tf.protocol == ATA_PROT_NCQ) | |
1244 | ctl_flags |= NV_CPB_CTL_QUEUE | NV_CPB_CTL_FPDMA; | |
1245 | ||
cdf56bcf RH |
1246 | VPRINTK("qc->flags = 0x%lx\n", qc->flags); |
1247 | ||
fbbb262d RH |
1248 | nv_adma_tf_to_cpb(&qc->tf, cpb->tf); |
1249 | ||
382a6652 RH |
1250 | if(qc->flags & ATA_QCFLAG_DMAMAP) { |
1251 | nv_adma_fill_sg(qc, cpb); | |
1252 | ctl_flags |= NV_CPB_CTL_APRD_VALID; | |
1253 | } else | |
1254 | memset(&cpb->aprd[0], 0, sizeof(struct nv_adma_prd) * 5); | |
fbbb262d RH |
1255 | |
1256 | /* Be paranoid and don't let the device see NV_CPB_CTL_CPB_VALID until we are | |
1257 | finished filling in all of the contents */ | |
1258 | wmb(); | |
1259 | cpb->ctl_flags = ctl_flags; | |
41949ed5 RH |
1260 | wmb(); |
1261 | cpb->resp_flags = 0; | |
fbbb262d RH |
1262 | } |
1263 | ||
1264 | static unsigned int nv_adma_qc_issue(struct ata_queued_cmd *qc) | |
1265 | { | |
2dec7555 | 1266 | struct nv_adma_port_priv *pp = qc->ap->private_data; |
cdf56bcf | 1267 | void __iomem *mmio = pp->ctl_block; |
5e5c74a5 | 1268 | int curr_ncq = (qc->tf.protocol == ATA_PROT_NCQ); |
fbbb262d RH |
1269 | |
1270 | VPRINTK("ENTER\n"); | |
1271 | ||
382a6652 | 1272 | if (nv_adma_use_reg_mode(qc)) { |
fbbb262d | 1273 | /* use ATA register mode */ |
382a6652 | 1274 | VPRINTK("using ATA register mode: 0x%lx\n", qc->flags); |
fbbb262d RH |
1275 | nv_adma_register_mode(qc->ap); |
1276 | return ata_qc_issue_prot(qc); | |
1277 | } else | |
1278 | nv_adma_mode(qc->ap); | |
1279 | ||
1280 | /* write append register, command tag in lower 8 bits | |
1281 | and (number of cpbs to append -1) in top 8 bits */ | |
1282 | wmb(); | |
5e5c74a5 RH |
1283 | |
1284 | if(curr_ncq != pp->last_issue_ncq) { | |
1285 | /* Seems to need some delay before switching between NCQ and non-NCQ | |
1286 | commands, else we get command timeouts and such. */ | |
1287 | udelay(20); | |
1288 | pp->last_issue_ncq = curr_ncq; | |
1289 | } | |
1290 | ||
fbbb262d RH |
1291 | writew(qc->tag, mmio + NV_ADMA_APPEND); |
1292 | ||
1293 | DPRINTK("Issued tag %u\n",qc->tag); | |
1294 | ||
1295 | return 0; | |
1296 | } | |
1297 | ||
7d12e780 | 1298 | static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance) |
1da177e4 | 1299 | { |
cca3974e | 1300 | struct ata_host *host = dev_instance; |
1da177e4 LT |
1301 | unsigned int i; |
1302 | unsigned int handled = 0; | |
1303 | unsigned long flags; | |
1304 | ||
cca3974e | 1305 | spin_lock_irqsave(&host->lock, flags); |
1da177e4 | 1306 | |
cca3974e | 1307 | for (i = 0; i < host->n_ports; i++) { |
1da177e4 LT |
1308 | struct ata_port *ap; |
1309 | ||
cca3974e | 1310 | ap = host->ports[i]; |
c1389503 | 1311 | if (ap && |
029f5468 | 1312 | !(ap->flags & ATA_FLAG_DISABLED)) { |
1da177e4 LT |
1313 | struct ata_queued_cmd *qc; |
1314 | ||
1315 | qc = ata_qc_from_tag(ap, ap->active_tag); | |
e50362ec | 1316 | if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) |
1da177e4 | 1317 | handled += ata_host_intr(ap, qc); |
b887030a AC |
1318 | else |
1319 | // No request pending? Clear interrupt status | |
1320 | // anyway, in case there's one pending. | |
1321 | ap->ops->check_status(ap); | |
1da177e4 LT |
1322 | } |
1323 | ||
1324 | } | |
1325 | ||
cca3974e | 1326 | spin_unlock_irqrestore(&host->lock, flags); |
1da177e4 LT |
1327 | |
1328 | return IRQ_RETVAL(handled); | |
1329 | } | |
1330 | ||
cca3974e | 1331 | static irqreturn_t nv_do_interrupt(struct ata_host *host, u8 irq_stat) |
ada364e8 TH |
1332 | { |
1333 | int i, handled = 0; | |
1334 | ||
cca3974e JG |
1335 | for (i = 0; i < host->n_ports; i++) { |
1336 | struct ata_port *ap = host->ports[i]; | |
ada364e8 TH |
1337 | |
1338 | if (ap && !(ap->flags & ATA_FLAG_DISABLED)) | |
1339 | handled += nv_host_intr(ap, irq_stat); | |
1340 | ||
1341 | irq_stat >>= NV_INT_PORT_SHIFT; | |
1342 | } | |
1343 | ||
1344 | return IRQ_RETVAL(handled); | |
1345 | } | |
1346 | ||
7d12e780 | 1347 | static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance) |
ada364e8 | 1348 | { |
cca3974e | 1349 | struct ata_host *host = dev_instance; |
ada364e8 TH |
1350 | u8 irq_stat; |
1351 | irqreturn_t ret; | |
1352 | ||
cca3974e | 1353 | spin_lock(&host->lock); |
0d5ff566 | 1354 | irq_stat = ioread8(host->ports[0]->ioaddr.scr_addr + NV_INT_STATUS); |
cca3974e JG |
1355 | ret = nv_do_interrupt(host, irq_stat); |
1356 | spin_unlock(&host->lock); | |
ada364e8 TH |
1357 | |
1358 | return ret; | |
1359 | } | |
1360 | ||
7d12e780 | 1361 | static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance) |
ada364e8 | 1362 | { |
cca3974e | 1363 | struct ata_host *host = dev_instance; |
ada364e8 TH |
1364 | u8 irq_stat; |
1365 | irqreturn_t ret; | |
1366 | ||
cca3974e | 1367 | spin_lock(&host->lock); |
0d5ff566 | 1368 | irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804); |
cca3974e JG |
1369 | ret = nv_do_interrupt(host, irq_stat); |
1370 | spin_unlock(&host->lock); | |
ada364e8 TH |
1371 | |
1372 | return ret; | |
1373 | } | |
1374 | ||
1da177e4 LT |
1375 | static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg) |
1376 | { | |
1da177e4 LT |
1377 | if (sc_reg > SCR_CONTROL) |
1378 | return 0xffffffffU; | |
1379 | ||
0d5ff566 | 1380 | return ioread32(ap->ioaddr.scr_addr + (sc_reg * 4)); |
1da177e4 LT |
1381 | } |
1382 | ||
1383 | static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val) | |
1384 | { | |
1da177e4 LT |
1385 | if (sc_reg > SCR_CONTROL) |
1386 | return; | |
1387 | ||
0d5ff566 | 1388 | iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4)); |
1da177e4 LT |
1389 | } |
1390 | ||
39f87582 TH |
1391 | static void nv_nf2_freeze(struct ata_port *ap) |
1392 | { | |
0d5ff566 | 1393 | void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr; |
39f87582 TH |
1394 | int shift = ap->port_no * NV_INT_PORT_SHIFT; |
1395 | u8 mask; | |
1396 | ||
0d5ff566 | 1397 | mask = ioread8(scr_addr + NV_INT_ENABLE); |
39f87582 | 1398 | mask &= ~(NV_INT_ALL << shift); |
0d5ff566 | 1399 | iowrite8(mask, scr_addr + NV_INT_ENABLE); |
39f87582 TH |
1400 | } |
1401 | ||
1402 | static void nv_nf2_thaw(struct ata_port *ap) | |
1403 | { | |
0d5ff566 | 1404 | void __iomem *scr_addr = ap->host->ports[0]->ioaddr.scr_addr; |
39f87582 TH |
1405 | int shift = ap->port_no * NV_INT_PORT_SHIFT; |
1406 | u8 mask; | |
1407 | ||
0d5ff566 | 1408 | iowrite8(NV_INT_ALL << shift, scr_addr + NV_INT_STATUS); |
39f87582 | 1409 | |
0d5ff566 | 1410 | mask = ioread8(scr_addr + NV_INT_ENABLE); |
39f87582 | 1411 | mask |= (NV_INT_MASK << shift); |
0d5ff566 | 1412 | iowrite8(mask, scr_addr + NV_INT_ENABLE); |
39f87582 TH |
1413 | } |
1414 | ||
1415 | static void nv_ck804_freeze(struct ata_port *ap) | |
1416 | { | |
0d5ff566 | 1417 | void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR]; |
39f87582 TH |
1418 | int shift = ap->port_no * NV_INT_PORT_SHIFT; |
1419 | u8 mask; | |
1420 | ||
1421 | mask = readb(mmio_base + NV_INT_ENABLE_CK804); | |
1422 | mask &= ~(NV_INT_ALL << shift); | |
1423 | writeb(mask, mmio_base + NV_INT_ENABLE_CK804); | |
1424 | } | |
1425 | ||
1426 | static void nv_ck804_thaw(struct ata_port *ap) | |
1427 | { | |
0d5ff566 | 1428 | void __iomem *mmio_base = ap->host->iomap[NV_MMIO_BAR]; |
39f87582 TH |
1429 | int shift = ap->port_no * NV_INT_PORT_SHIFT; |
1430 | u8 mask; | |
1431 | ||
1432 | writeb(NV_INT_ALL << shift, mmio_base + NV_INT_STATUS_CK804); | |
1433 | ||
1434 | mask = readb(mmio_base + NV_INT_ENABLE_CK804); | |
1435 | mask |= (NV_INT_MASK << shift); | |
1436 | writeb(mask, mmio_base + NV_INT_ENABLE_CK804); | |
1437 | } | |
1438 | ||
1439 | static int nv_hardreset(struct ata_port *ap, unsigned int *class) | |
1440 | { | |
1441 | unsigned int dummy; | |
1442 | ||
1443 | /* SATA hardreset fails to retrieve proper device signature on | |
1444 | * some controllers. Don't classify on hardreset. For more | |
1445 | * info, see http://bugme.osdl.org/show_bug.cgi?id=3352 | |
1446 | */ | |
1447 | return sata_std_hardreset(ap, &dummy); | |
1448 | } | |
1449 | ||
1450 | static void nv_error_handler(struct ata_port *ap) | |
1451 | { | |
1452 | ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, | |
1453 | nv_hardreset, ata_std_postreset); | |
1454 | } | |
1455 | ||
fbbb262d RH |
1456 | static void nv_adma_error_handler(struct ata_port *ap) |
1457 | { | |
1458 | struct nv_adma_port_priv *pp = ap->private_data; | |
1459 | if(!(pp->flags & NV_ADMA_PORT_REGISTER_MODE)) { | |
cdf56bcf | 1460 | void __iomem *mmio = pp->ctl_block; |
fbbb262d RH |
1461 | int i; |
1462 | u16 tmp; | |
2cb27853 RH |
1463 | |
1464 | if(ata_tag_valid(ap->active_tag) || ap->sactive) { | |
1465 | u32 notifier = readl(mmio + NV_ADMA_NOTIFIER); | |
1466 | u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR); | |
1467 | u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL); | |
1468 | u32 status = readw(mmio + NV_ADMA_STAT); | |
08af7414 RH |
1469 | u8 cpb_count = readb(mmio + NV_ADMA_CPB_COUNT); |
1470 | u8 next_cpb_idx = readb(mmio + NV_ADMA_NEXT_CPB_IDX); | |
2cb27853 RH |
1471 | |
1472 | ata_port_printk(ap, KERN_ERR, "EH in ADMA mode, notifier 0x%X " | |
08af7414 RH |
1473 | "notifier_error 0x%X gen_ctl 0x%X status 0x%X " |
1474 | "next cpb count 0x%X next cpb idx 0x%x\n", | |
1475 | notifier, notifier_error, gen_ctl, status, | |
1476 | cpb_count, next_cpb_idx); | |
2cb27853 RH |
1477 | |
1478 | for( i=0;i<NV_ADMA_MAX_CPBS;i++) { | |
1479 | struct nv_adma_cpb *cpb = &pp->cpb[i]; | |
1480 | if( (ata_tag_valid(ap->active_tag) && i == ap->active_tag) || | |
1481 | ap->sactive & (1 << i) ) | |
1482 | ata_port_printk(ap, KERN_ERR, | |
1483 | "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n", | |
1484 | i, cpb->ctl_flags, cpb->resp_flags); | |
1485 | } | |
1486 | } | |
fbbb262d | 1487 | |
fbbb262d RH |
1488 | /* Push us back into port register mode for error handling. */ |
1489 | nv_adma_register_mode(ap); | |
1490 | ||
fbbb262d RH |
1491 | /* Mark all of the CPBs as invalid to prevent them from being executed */ |
1492 | for( i=0;i<NV_ADMA_MAX_CPBS;i++) | |
1493 | pp->cpb[i].ctl_flags &= ~NV_CPB_CTL_CPB_VALID; | |
1494 | ||
1495 | /* clear CPB fetch count */ | |
1496 | writew(0, mmio + NV_ADMA_CPB_COUNT); | |
1497 | ||
1498 | /* Reset channel */ | |
1499 | tmp = readw(mmio + NV_ADMA_CTL); | |
1500 | writew(tmp | NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
1501 | readl( mmio + NV_ADMA_CTL ); /* flush posted write */ | |
1502 | udelay(1); | |
1503 | writew(tmp & ~NV_ADMA_CTL_CHANNEL_RESET, mmio + NV_ADMA_CTL); | |
1504 | readl( mmio + NV_ADMA_CTL ); /* flush posted write */ | |
1505 | } | |
1506 | ||
1507 | ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, | |
1508 | nv_hardreset, ata_std_postreset); | |
1509 | } | |
1510 | ||
1da177e4 LT |
1511 | static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) |
1512 | { | |
1513 | static int printed_version = 0; | |
29da9f6d | 1514 | struct ata_port_info *ppi[2]; |
1da177e4 | 1515 | struct ata_probe_ent *probe_ent; |
cdf56bcf | 1516 | struct nv_host_priv *hpriv; |
1da177e4 LT |
1517 | int rc; |
1518 | u32 bar; | |
0d5ff566 | 1519 | void __iomem *base; |
fbbb262d RH |
1520 | unsigned long type = ent->driver_data; |
1521 | int mask_set = 0; | |
1da177e4 LT |
1522 | |
1523 | // Make sure this is a SATA controller by counting the number of bars | |
1524 | // (NVIDIA SATA controllers will always have six bars). Otherwise, | |
1525 | // it's an IDE controller and we ignore it. | |
1526 | for (bar=0; bar<6; bar++) | |
1527 | if (pci_resource_start(pdev, bar) == 0) | |
1528 | return -ENODEV; | |
1529 | ||
cdf56bcf | 1530 | if (!printed_version++) |
a9524a76 | 1531 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
1da177e4 | 1532 | |
24dc5f33 | 1533 | rc = pcim_enable_device(pdev); |
1da177e4 | 1534 | if (rc) |
24dc5f33 | 1535 | return rc; |
1da177e4 LT |
1536 | |
1537 | rc = pci_request_regions(pdev, DRV_NAME); | |
1538 | if (rc) { | |
24dc5f33 TH |
1539 | pcim_pin_device(pdev); |
1540 | return rc; | |
1da177e4 LT |
1541 | } |
1542 | ||
fbbb262d RH |
1543 | if(type >= CK804 && adma_enabled) { |
1544 | dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n"); | |
1545 | type = ADMA; | |
1546 | if(!pci_set_dma_mask(pdev, DMA_64BIT_MASK) && | |
1547 | !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) | |
1548 | mask_set = 1; | |
1549 | } | |
1550 | ||
1551 | if(!mask_set) { | |
1552 | rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); | |
1553 | if (rc) | |
24dc5f33 | 1554 | return rc; |
fbbb262d RH |
1555 | rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); |
1556 | if (rc) | |
24dc5f33 | 1557 | return rc; |
fbbb262d | 1558 | } |
1da177e4 LT |
1559 | |
1560 | rc = -ENOMEM; | |
1561 | ||
24dc5f33 | 1562 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); |
cdf56bcf | 1563 | if (!hpriv) |
24dc5f33 | 1564 | return -ENOMEM; |
cdf56bcf | 1565 | |
fbbb262d | 1566 | ppi[0] = ppi[1] = &nv_port_info[type]; |
29da9f6d | 1567 | probe_ent = ata_pci_init_native_mode(pdev, ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY); |
1da177e4 | 1568 | if (!probe_ent) |
24dc5f33 TH |
1569 | return -ENOMEM; |
1570 | ||
0d5ff566 | 1571 | if (!pcim_iomap(pdev, NV_MMIO_BAR, 0)) |
24dc5f33 | 1572 | return -EIO; |
0d5ff566 | 1573 | probe_ent->iomap = pcim_iomap_table(pdev); |
1da177e4 | 1574 | |
cdf56bcf RH |
1575 | probe_ent->private_data = hpriv; |
1576 | hpriv->type = type; | |
1da177e4 | 1577 | |
0d5ff566 | 1578 | base = probe_ent->iomap[NV_MMIO_BAR]; |
02cbd926 JG |
1579 | probe_ent->port[0].scr_addr = base + NV_PORT0_SCR_REG_OFFSET; |
1580 | probe_ent->port[1].scr_addr = base + NV_PORT1_SCR_REG_OFFSET; | |
1da177e4 | 1581 | |
ada364e8 | 1582 | /* enable SATA space for CK804 */ |
fbbb262d | 1583 | if (type >= CK804) { |
ada364e8 TH |
1584 | u8 regval; |
1585 | ||
1586 | pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val); | |
1587 | regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN; | |
1588 | pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); | |
1589 | } | |
1590 | ||
1da177e4 LT |
1591 | pci_set_master(pdev); |
1592 | ||
fbbb262d RH |
1593 | if (type == ADMA) { |
1594 | rc = nv_adma_host_init(probe_ent); | |
1595 | if (rc) | |
24dc5f33 | 1596 | return rc; |
fbbb262d RH |
1597 | } |
1598 | ||
1da177e4 LT |
1599 | rc = ata_device_add(probe_ent); |
1600 | if (rc != NV_PORTS) | |
24dc5f33 | 1601 | return -ENODEV; |
1da177e4 | 1602 | |
24dc5f33 | 1603 | devm_kfree(&pdev->dev, probe_ent); |
1da177e4 | 1604 | return 0; |
1da177e4 LT |
1605 | } |
1606 | ||
cdf56bcf RH |
1607 | static void nv_remove_one (struct pci_dev *pdev) |
1608 | { | |
1609 | struct ata_host *host = dev_get_drvdata(&pdev->dev); | |
1610 | struct nv_host_priv *hpriv = host->private_data; | |
1611 | ||
1612 | ata_pci_remove_one(pdev); | |
1613 | kfree(hpriv); | |
1614 | } | |
1615 | ||
1616 | static int nv_pci_device_resume(struct pci_dev *pdev) | |
1617 | { | |
1618 | struct ata_host *host = dev_get_drvdata(&pdev->dev); | |
1619 | struct nv_host_priv *hpriv = host->private_data; | |
ce053fa8 | 1620 | int rc; |
cdf56bcf | 1621 | |
ce053fa8 RH |
1622 | rc = ata_pci_device_do_resume(pdev); |
1623 | if(rc) | |
1624 | return rc; | |
cdf56bcf RH |
1625 | |
1626 | if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) { | |
1627 | if(hpriv->type >= CK804) { | |
1628 | u8 regval; | |
1629 | ||
1630 | pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val); | |
1631 | regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN; | |
1632 | pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); | |
1633 | } | |
1634 | if(hpriv->type == ADMA) { | |
1635 | u32 tmp32; | |
1636 | struct nv_adma_port_priv *pp; | |
1637 | /* enable/disable ADMA on the ports appropriately */ | |
1638 | pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32); | |
1639 | ||
1640 | pp = host->ports[0]->private_data; | |
1641 | if(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) | |
1642 | tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN | | |
1643 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN); | |
1644 | else | |
1645 | tmp32 |= (NV_MCP_SATA_CFG_20_PORT0_EN | | |
1646 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN); | |
1647 | pp = host->ports[1]->private_data; | |
1648 | if(pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) | |
1649 | tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT1_EN | | |
1650 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN); | |
1651 | else | |
1652 | tmp32 |= (NV_MCP_SATA_CFG_20_PORT1_EN | | |
1653 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN); | |
1654 | ||
1655 | pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32); | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | ata_host_resume(host); | |
1660 | ||
1661 | return 0; | |
1662 | } | |
1663 | ||
cca3974e | 1664 | static void nv_ck804_host_stop(struct ata_host *host) |
ada364e8 | 1665 | { |
cca3974e | 1666 | struct pci_dev *pdev = to_pci_dev(host->dev); |
ada364e8 TH |
1667 | u8 regval; |
1668 | ||
1669 | /* disable SATA space for CK804 */ | |
1670 | pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val); | |
1671 | regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN; | |
1672 | pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); | |
ada364e8 TH |
1673 | } |
1674 | ||
fbbb262d RH |
1675 | static void nv_adma_host_stop(struct ata_host *host) |
1676 | { | |
1677 | struct pci_dev *pdev = to_pci_dev(host->dev); | |
fbbb262d RH |
1678 | u32 tmp32; |
1679 | ||
fbbb262d RH |
1680 | /* disable ADMA on the ports */ |
1681 | pci_read_config_dword(pdev, NV_MCP_SATA_CFG_20, &tmp32); | |
1682 | tmp32 &= ~(NV_MCP_SATA_CFG_20_PORT0_EN | | |
1683 | NV_MCP_SATA_CFG_20_PORT0_PWB_EN | | |
1684 | NV_MCP_SATA_CFG_20_PORT1_EN | | |
1685 | NV_MCP_SATA_CFG_20_PORT1_PWB_EN); | |
1686 | ||
1687 | pci_write_config_dword(pdev, NV_MCP_SATA_CFG_20, tmp32); | |
1688 | ||
1689 | nv_ck804_host_stop(host); | |
1690 | } | |
1691 | ||
1da177e4 LT |
1692 | static int __init nv_init(void) |
1693 | { | |
b7887196 | 1694 | return pci_register_driver(&nv_pci_driver); |
1da177e4 LT |
1695 | } |
1696 | ||
1697 | static void __exit nv_exit(void) | |
1698 | { | |
1699 | pci_unregister_driver(&nv_pci_driver); | |
1700 | } | |
1701 | ||
1702 | module_init(nv_init); | |
1703 | module_exit(nv_exit); | |
fbbb262d RH |
1704 | module_param_named(adma, adma_enabled, bool, 0444); |
1705 | MODULE_PARM_DESC(adma, "Enable use of ADMA (Default: true)"); |