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20f733e7 BR |
1 | /* |
2 | * sata_mv.c - Marvell SATA support | |
3 | * | |
8b260248 | 4 | * Copyright 2005: EMC Corporation, all rights reserved. |
e2b1be56 | 5 | * Copyright 2005 Red Hat, Inc. All rights reserved. |
20f733e7 BR |
6 | * |
7 | * Please ALWAYS copy linux-ide@vger.kernel.org on emails. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; version 2 of the License. | |
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; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
4a05e209 JG |
24 | /* |
25 | sata_mv TODO list: | |
26 | ||
27 | 1) Needs a full errata audit for all chipsets. I implemented most | |
28 | of the errata workarounds found in the Marvell vendor driver, but | |
29 | I distinctly remember a couple workarounds (one related to PCI-X) | |
30 | are still needed. | |
31 | ||
1fd2e1c2 ML |
32 | 2) Improve/fix IRQ and error handling sequences. |
33 | ||
34 | 3) ATAPI support (Marvell claims the 60xx/70xx chips can do it). | |
35 | ||
36 | 4) Think about TCQ support here, and for libata in general | |
37 | with controllers that suppport it via host-queuing hardware | |
38 | (a software-only implementation could be a nightmare). | |
4a05e209 JG |
39 | |
40 | 5) Investigate problems with PCI Message Signalled Interrupts (MSI). | |
41 | ||
42 | 6) Add port multiplier support (intermediate) | |
43 | ||
4a05e209 JG |
44 | 8) Develop a low-power-consumption strategy, and implement it. |
45 | ||
46 | 9) [Experiment, low priority] See if ATAPI can be supported using | |
47 | "unknown FIS" or "vendor-specific FIS" support, or something creative | |
48 | like that. | |
49 | ||
50 | 10) [Experiment, low priority] Investigate interrupt coalescing. | |
51 | Quite often, especially with PCI Message Signalled Interrupts (MSI), | |
52 | the overhead reduced by interrupt mitigation is quite often not | |
53 | worth the latency cost. | |
54 | ||
55 | 11) [Experiment, Marvell value added] Is it possible to use target | |
56 | mode to cross-connect two Linux boxes with Marvell cards? If so, | |
57 | creating LibATA target mode support would be very interesting. | |
58 | ||
59 | Target mode, for those without docs, is the ability to directly | |
60 | connect two SATA controllers. | |
61 | ||
4a05e209 JG |
62 | */ |
63 | ||
64 | ||
20f733e7 BR |
65 | #include <linux/kernel.h> |
66 | #include <linux/module.h> | |
67 | #include <linux/pci.h> | |
68 | #include <linux/init.h> | |
69 | #include <linux/blkdev.h> | |
70 | #include <linux/delay.h> | |
71 | #include <linux/interrupt.h> | |
8d8b6004 | 72 | #include <linux/dmapool.h> |
20f733e7 | 73 | #include <linux/dma-mapping.h> |
a9524a76 | 74 | #include <linux/device.h> |
f351b2d6 SB |
75 | #include <linux/platform_device.h> |
76 | #include <linux/ata_platform.h> | |
20f733e7 | 77 | #include <scsi/scsi_host.h> |
193515d5 | 78 | #include <scsi/scsi_cmnd.h> |
6c08772e | 79 | #include <scsi/scsi_device.h> |
20f733e7 | 80 | #include <linux/libata.h> |
20f733e7 BR |
81 | |
82 | #define DRV_NAME "sata_mv" | |
1fd2e1c2 | 83 | #define DRV_VERSION "1.20" |
20f733e7 BR |
84 | |
85 | enum { | |
86 | /* BAR's are enumerated in terms of pci_resource_start() terms */ | |
87 | MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */ | |
88 | MV_IO_BAR = 2, /* offset 0x18: IO space */ | |
89 | MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */ | |
90 | ||
91 | MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */ | |
92 | MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */ | |
93 | ||
94 | MV_PCI_REG_BASE = 0, | |
95 | MV_IRQ_COAL_REG_BASE = 0x18000, /* 6xxx part only */ | |
615ab953 ML |
96 | MV_IRQ_COAL_CAUSE = (MV_IRQ_COAL_REG_BASE + 0x08), |
97 | MV_IRQ_COAL_CAUSE_LO = (MV_IRQ_COAL_REG_BASE + 0x88), | |
98 | MV_IRQ_COAL_CAUSE_HI = (MV_IRQ_COAL_REG_BASE + 0x8c), | |
99 | MV_IRQ_COAL_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xcc), | |
100 | MV_IRQ_COAL_TIME_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xd0), | |
101 | ||
20f733e7 | 102 | MV_SATAHC0_REG_BASE = 0x20000, |
522479fb | 103 | MV_FLASH_CTL = 0x1046c, |
bca1c4eb JG |
104 | MV_GPIO_PORT_CTL = 0x104f0, |
105 | MV_RESET_CFG = 0x180d8, | |
20f733e7 BR |
106 | |
107 | MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ, | |
108 | MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ, | |
109 | MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */ | |
110 | MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ, | |
111 | ||
31961943 BR |
112 | MV_MAX_Q_DEPTH = 32, |
113 | MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1, | |
114 | ||
115 | /* CRQB needs alignment on a 1KB boundary. Size == 1KB | |
116 | * CRPB needs alignment on a 256B boundary. Size == 256B | |
31961943 BR |
117 | * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B |
118 | */ | |
119 | MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH), | |
120 | MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH), | |
da2fa9ba | 121 | MV_MAX_SG_CT = 256, |
31961943 | 122 | MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT), |
31961943 | 123 | |
20f733e7 BR |
124 | MV_PORTS_PER_HC = 4, |
125 | /* == (port / MV_PORTS_PER_HC) to determine HC from 0-7 port */ | |
126 | MV_PORT_HC_SHIFT = 2, | |
31961943 | 127 | /* == (port % MV_PORTS_PER_HC) to determine hard port from 0-7 port */ |
20f733e7 BR |
128 | MV_PORT_MASK = 3, |
129 | ||
130 | /* Host Flags */ | |
131 | MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */ | |
132 | MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */ | |
7bb3c529 SB |
133 | /* SoC integrated controllers, no PCI interface */ |
134 | MV_FLAG_SOC = (1 << 28), | |
135 | ||
c5d3e45a | 136 | MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
bdd4ddde JG |
137 | ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI | |
138 | ATA_FLAG_PIO_POLLING, | |
47c2b677 | 139 | MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE, |
20f733e7 | 140 | |
31961943 BR |
141 | CRQB_FLAG_READ = (1 << 0), |
142 | CRQB_TAG_SHIFT = 1, | |
c5d3e45a JG |
143 | CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */ |
144 | CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */ | |
31961943 BR |
145 | CRQB_CMD_ADDR_SHIFT = 8, |
146 | CRQB_CMD_CS = (0x2 << 11), | |
147 | CRQB_CMD_LAST = (1 << 15), | |
148 | ||
149 | CRPB_FLAG_STATUS_SHIFT = 8, | |
c5d3e45a JG |
150 | CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */ |
151 | CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */ | |
31961943 BR |
152 | |
153 | EPRD_FLAG_END_OF_TBL = (1 << 31), | |
154 | ||
20f733e7 BR |
155 | /* PCI interface registers */ |
156 | ||
31961943 BR |
157 | PCI_COMMAND_OFS = 0xc00, |
158 | ||
20f733e7 BR |
159 | PCI_MAIN_CMD_STS_OFS = 0xd30, |
160 | STOP_PCI_MASTER = (1 << 2), | |
161 | PCI_MASTER_EMPTY = (1 << 3), | |
162 | GLOB_SFT_RST = (1 << 4), | |
163 | ||
522479fb JG |
164 | MV_PCI_MODE = 0xd00, |
165 | MV_PCI_EXP_ROM_BAR_CTL = 0xd2c, | |
166 | MV_PCI_DISC_TIMER = 0xd04, | |
167 | MV_PCI_MSI_TRIGGER = 0xc38, | |
168 | MV_PCI_SERR_MASK = 0xc28, | |
169 | MV_PCI_XBAR_TMOUT = 0x1d04, | |
170 | MV_PCI_ERR_LOW_ADDRESS = 0x1d40, | |
171 | MV_PCI_ERR_HIGH_ADDRESS = 0x1d44, | |
172 | MV_PCI_ERR_ATTRIBUTE = 0x1d48, | |
173 | MV_PCI_ERR_COMMAND = 0x1d50, | |
174 | ||
02a121da ML |
175 | PCI_IRQ_CAUSE_OFS = 0x1d58, |
176 | PCI_IRQ_MASK_OFS = 0x1d5c, | |
20f733e7 BR |
177 | PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */ |
178 | ||
02a121da ML |
179 | PCIE_IRQ_CAUSE_OFS = 0x1900, |
180 | PCIE_IRQ_MASK_OFS = 0x1910, | |
646a4da5 | 181 | PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */ |
02a121da | 182 | |
20f733e7 BR |
183 | HC_MAIN_IRQ_CAUSE_OFS = 0x1d60, |
184 | HC_MAIN_IRQ_MASK_OFS = 0x1d64, | |
f351b2d6 SB |
185 | HC_SOC_MAIN_IRQ_CAUSE_OFS = 0x20020, |
186 | HC_SOC_MAIN_IRQ_MASK_OFS = 0x20024, | |
20f733e7 BR |
187 | PORT0_ERR = (1 << 0), /* shift by port # */ |
188 | PORT0_DONE = (1 << 1), /* shift by port # */ | |
189 | HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */ | |
190 | HC_SHIFT = 9, /* bits 9-17 = HC1's ports */ | |
191 | PCI_ERR = (1 << 18), | |
192 | TRAN_LO_DONE = (1 << 19), /* 6xxx: IRQ coalescing */ | |
193 | TRAN_HI_DONE = (1 << 20), /* 6xxx: IRQ coalescing */ | |
fb621e2f JG |
194 | PORTS_0_3_COAL_DONE = (1 << 8), |
195 | PORTS_4_7_COAL_DONE = (1 << 17), | |
20f733e7 BR |
196 | PORTS_0_7_COAL_DONE = (1 << 21), /* 6xxx: IRQ coalescing */ |
197 | GPIO_INT = (1 << 22), | |
198 | SELF_INT = (1 << 23), | |
199 | TWSI_INT = (1 << 24), | |
200 | HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */ | |
fb621e2f | 201 | HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */ |
f351b2d6 | 202 | HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */ |
8b260248 | 203 | HC_MAIN_MASKED_IRQS = (TRAN_LO_DONE | TRAN_HI_DONE | |
20f733e7 BR |
204 | PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT | |
205 | HC_MAIN_RSVD), | |
fb621e2f JG |
206 | HC_MAIN_MASKED_IRQS_5 = (PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE | |
207 | HC_MAIN_RSVD_5), | |
f351b2d6 | 208 | HC_MAIN_MASKED_IRQS_SOC = (PORTS_0_3_COAL_DONE | HC_MAIN_RSVD_SOC), |
20f733e7 BR |
209 | |
210 | /* SATAHC registers */ | |
211 | HC_CFG_OFS = 0, | |
212 | ||
213 | HC_IRQ_CAUSE_OFS = 0x14, | |
31961943 | 214 | CRPB_DMA_DONE = (1 << 0), /* shift by port # */ |
20f733e7 BR |
215 | HC_IRQ_COAL = (1 << 4), /* IRQ coalescing */ |
216 | DEV_IRQ = (1 << 8), /* shift by port # */ | |
217 | ||
218 | /* Shadow block registers */ | |
31961943 BR |
219 | SHD_BLK_OFS = 0x100, |
220 | SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */ | |
20f733e7 BR |
221 | |
222 | /* SATA registers */ | |
223 | SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */ | |
224 | SATA_ACTIVE_OFS = 0x350, | |
0c58912e | 225 | SATA_FIS_IRQ_CAUSE_OFS = 0x364, |
47c2b677 | 226 | PHY_MODE3 = 0x310, |
bca1c4eb JG |
227 | PHY_MODE4 = 0x314, |
228 | PHY_MODE2 = 0x330, | |
c9d39130 JG |
229 | MV5_PHY_MODE = 0x74, |
230 | MV5_LT_MODE = 0x30, | |
231 | MV5_PHY_CTL = 0x0C, | |
bca1c4eb JG |
232 | SATA_INTERFACE_CTL = 0x050, |
233 | ||
234 | MV_M2_PREAMP_MASK = 0x7e0, | |
20f733e7 BR |
235 | |
236 | /* Port registers */ | |
237 | EDMA_CFG_OFS = 0, | |
0c58912e ML |
238 | EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */ |
239 | EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */ | |
240 | EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */ | |
241 | EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */ | |
242 | EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */ | |
20f733e7 BR |
243 | |
244 | EDMA_ERR_IRQ_CAUSE_OFS = 0x8, | |
245 | EDMA_ERR_IRQ_MASK_OFS = 0xc, | |
6c1153e0 JG |
246 | EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */ |
247 | EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */ | |
248 | EDMA_ERR_DEV = (1 << 2), /* device error */ | |
249 | EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */ | |
250 | EDMA_ERR_DEV_CON = (1 << 4), /* device connected */ | |
251 | EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */ | |
c5d3e45a JG |
252 | EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */ |
253 | EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */ | |
6c1153e0 | 254 | EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */ |
c5d3e45a | 255 | EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */ |
6c1153e0 JG |
256 | EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */ |
257 | EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */ | |
258 | EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */ | |
259 | EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */ | |
646a4da5 | 260 | |
6c1153e0 | 261 | EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */ |
646a4da5 ML |
262 | EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */ |
263 | EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */ | |
264 | EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */ | |
265 | EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */ | |
266 | ||
6c1153e0 | 267 | EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */ |
646a4da5 | 268 | |
6c1153e0 | 269 | EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */ |
646a4da5 ML |
270 | EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */ |
271 | EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */ | |
272 | EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */ | |
273 | EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */ | |
274 | EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */ | |
275 | ||
6c1153e0 | 276 | EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */ |
646a4da5 | 277 | |
6c1153e0 | 278 | EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */ |
c5d3e45a JG |
279 | EDMA_ERR_OVERRUN_5 = (1 << 5), |
280 | EDMA_ERR_UNDERRUN_5 = (1 << 6), | |
646a4da5 ML |
281 | |
282 | EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 | | |
283 | EDMA_ERR_LNK_CTRL_RX_1 | | |
284 | EDMA_ERR_LNK_CTRL_RX_3 | | |
285 | EDMA_ERR_LNK_CTRL_TX, | |
286 | ||
bdd4ddde JG |
287 | EDMA_EH_FREEZE = EDMA_ERR_D_PAR | |
288 | EDMA_ERR_PRD_PAR | | |
289 | EDMA_ERR_DEV_DCON | | |
290 | EDMA_ERR_DEV_CON | | |
291 | EDMA_ERR_SERR | | |
292 | EDMA_ERR_SELF_DIS | | |
6c1153e0 | 293 | EDMA_ERR_CRQB_PAR | |
bdd4ddde JG |
294 | EDMA_ERR_CRPB_PAR | |
295 | EDMA_ERR_INTRL_PAR | | |
296 | EDMA_ERR_IORDY | | |
297 | EDMA_ERR_LNK_CTRL_RX_2 | | |
298 | EDMA_ERR_LNK_DATA_RX | | |
299 | EDMA_ERR_LNK_DATA_TX | | |
300 | EDMA_ERR_TRANS_PROTO, | |
301 | EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR | | |
302 | EDMA_ERR_PRD_PAR | | |
303 | EDMA_ERR_DEV_DCON | | |
304 | EDMA_ERR_DEV_CON | | |
305 | EDMA_ERR_OVERRUN_5 | | |
306 | EDMA_ERR_UNDERRUN_5 | | |
307 | EDMA_ERR_SELF_DIS_5 | | |
6c1153e0 | 308 | EDMA_ERR_CRQB_PAR | |
bdd4ddde JG |
309 | EDMA_ERR_CRPB_PAR | |
310 | EDMA_ERR_INTRL_PAR | | |
311 | EDMA_ERR_IORDY, | |
20f733e7 | 312 | |
31961943 BR |
313 | EDMA_REQ_Q_BASE_HI_OFS = 0x10, |
314 | EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */ | |
31961943 BR |
315 | |
316 | EDMA_REQ_Q_OUT_PTR_OFS = 0x18, | |
317 | EDMA_REQ_Q_PTR_SHIFT = 5, | |
318 | ||
319 | EDMA_RSP_Q_BASE_HI_OFS = 0x1c, | |
320 | EDMA_RSP_Q_IN_PTR_OFS = 0x20, | |
321 | EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */ | |
31961943 BR |
322 | EDMA_RSP_Q_PTR_SHIFT = 3, |
323 | ||
0ea9e179 JG |
324 | EDMA_CMD_OFS = 0x28, /* EDMA command register */ |
325 | EDMA_EN = (1 << 0), /* enable EDMA */ | |
326 | EDMA_DS = (1 << 1), /* disable EDMA; self-negated */ | |
327 | ATA_RST = (1 << 2), /* reset trans/link/phy */ | |
20f733e7 | 328 | |
c9d39130 | 329 | EDMA_IORDY_TMOUT = 0x34, |
bca1c4eb | 330 | EDMA_ARB_CFG = 0x38, |
bca1c4eb | 331 | |
31961943 BR |
332 | /* Host private flags (hp_flags) */ |
333 | MV_HP_FLAG_MSI = (1 << 0), | |
47c2b677 JG |
334 | MV_HP_ERRATA_50XXB0 = (1 << 1), |
335 | MV_HP_ERRATA_50XXB2 = (1 << 2), | |
336 | MV_HP_ERRATA_60X1B2 = (1 << 3), | |
337 | MV_HP_ERRATA_60X1C0 = (1 << 4), | |
e4e7b892 | 338 | MV_HP_ERRATA_XX42A0 = (1 << 5), |
0ea9e179 JG |
339 | MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */ |
340 | MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */ | |
341 | MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */ | |
02a121da | 342 | MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */ |
20f733e7 | 343 | |
31961943 | 344 | /* Port private flags (pp_flags) */ |
0ea9e179 | 345 | MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */ |
72109168 | 346 | MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */ |
0ea9e179 | 347 | MV_PP_FLAG_HAD_A_RESET = (1 << 2), /* 1st hard reset complete? */ |
20f733e7 BR |
348 | }; |
349 | ||
ee9ccdf7 JG |
350 | #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I) |
351 | #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II) | |
e4e7b892 | 352 | #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE) |
7bb3c529 | 353 | #define HAS_PCI(host) (!((host)->ports[0]->flags & MV_FLAG_SOC)) |
bca1c4eb | 354 | |
095fec88 | 355 | enum { |
baf14aa1 JG |
356 | /* DMA boundary 0xffff is required by the s/g splitting |
357 | * we need on /length/ in mv_fill-sg(). | |
358 | */ | |
359 | MV_DMA_BOUNDARY = 0xffffU, | |
095fec88 | 360 | |
0ea9e179 JG |
361 | /* mask of register bits containing lower 32 bits |
362 | * of EDMA request queue DMA address | |
363 | */ | |
095fec88 JG |
364 | EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U, |
365 | ||
0ea9e179 | 366 | /* ditto, for response queue */ |
095fec88 JG |
367 | EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U, |
368 | }; | |
369 | ||
522479fb JG |
370 | enum chip_type { |
371 | chip_504x, | |
372 | chip_508x, | |
373 | chip_5080, | |
374 | chip_604x, | |
375 | chip_608x, | |
e4e7b892 JG |
376 | chip_6042, |
377 | chip_7042, | |
f351b2d6 | 378 | chip_soc, |
522479fb JG |
379 | }; |
380 | ||
31961943 BR |
381 | /* Command ReQuest Block: 32B */ |
382 | struct mv_crqb { | |
e1469874 ML |
383 | __le32 sg_addr; |
384 | __le32 sg_addr_hi; | |
385 | __le16 ctrl_flags; | |
386 | __le16 ata_cmd[11]; | |
31961943 | 387 | }; |
20f733e7 | 388 | |
e4e7b892 | 389 | struct mv_crqb_iie { |
e1469874 ML |
390 | __le32 addr; |
391 | __le32 addr_hi; | |
392 | __le32 flags; | |
393 | __le32 len; | |
394 | __le32 ata_cmd[4]; | |
e4e7b892 JG |
395 | }; |
396 | ||
31961943 BR |
397 | /* Command ResPonse Block: 8B */ |
398 | struct mv_crpb { | |
e1469874 ML |
399 | __le16 id; |
400 | __le16 flags; | |
401 | __le32 tmstmp; | |
20f733e7 BR |
402 | }; |
403 | ||
31961943 BR |
404 | /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */ |
405 | struct mv_sg { | |
e1469874 ML |
406 | __le32 addr; |
407 | __le32 flags_size; | |
408 | __le32 addr_hi; | |
409 | __le32 reserved; | |
31961943 | 410 | }; |
20f733e7 | 411 | |
31961943 BR |
412 | struct mv_port_priv { |
413 | struct mv_crqb *crqb; | |
414 | dma_addr_t crqb_dma; | |
415 | struct mv_crpb *crpb; | |
416 | dma_addr_t crpb_dma; | |
eb73d558 ML |
417 | struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH]; |
418 | dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH]; | |
bdd4ddde JG |
419 | |
420 | unsigned int req_idx; | |
421 | unsigned int resp_idx; | |
422 | ||
31961943 BR |
423 | u32 pp_flags; |
424 | }; | |
425 | ||
bca1c4eb JG |
426 | struct mv_port_signal { |
427 | u32 amps; | |
428 | u32 pre; | |
429 | }; | |
430 | ||
02a121da ML |
431 | struct mv_host_priv { |
432 | u32 hp_flags; | |
433 | struct mv_port_signal signal[8]; | |
434 | const struct mv_hw_ops *ops; | |
f351b2d6 SB |
435 | int n_ports; |
436 | void __iomem *base; | |
437 | void __iomem *main_cause_reg_addr; | |
438 | void __iomem *main_mask_reg_addr; | |
02a121da ML |
439 | u32 irq_cause_ofs; |
440 | u32 irq_mask_ofs; | |
441 | u32 unmask_all_irqs; | |
da2fa9ba ML |
442 | /* |
443 | * These consistent DMA memory pools give us guaranteed | |
444 | * alignment for hardware-accessed data structures, | |
445 | * and less memory waste in accomplishing the alignment. | |
446 | */ | |
447 | struct dma_pool *crqb_pool; | |
448 | struct dma_pool *crpb_pool; | |
449 | struct dma_pool *sg_tbl_pool; | |
02a121da ML |
450 | }; |
451 | ||
47c2b677 | 452 | struct mv_hw_ops { |
2a47ce06 JG |
453 | void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio, |
454 | unsigned int port); | |
47c2b677 JG |
455 | void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio); |
456 | void (*read_preamp)(struct mv_host_priv *hpriv, int idx, | |
457 | void __iomem *mmio); | |
c9d39130 JG |
458 | int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio, |
459 | unsigned int n_hc); | |
522479fb | 460 | void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio); |
7bb3c529 | 461 | void (*reset_bus)(struct ata_host *host, void __iomem *mmio); |
47c2b677 JG |
462 | }; |
463 | ||
20f733e7 | 464 | static void mv_irq_clear(struct ata_port *ap); |
da3dbb17 TH |
465 | static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val); |
466 | static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val); | |
467 | static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val); | |
468 | static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val); | |
31961943 BR |
469 | static int mv_port_start(struct ata_port *ap); |
470 | static void mv_port_stop(struct ata_port *ap); | |
471 | static void mv_qc_prep(struct ata_queued_cmd *qc); | |
e4e7b892 | 472 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc); |
9a3d9eb0 | 473 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc); |
bdd4ddde | 474 | static void mv_error_handler(struct ata_port *ap); |
bdd4ddde JG |
475 | static void mv_eh_freeze(struct ata_port *ap); |
476 | static void mv_eh_thaw(struct ata_port *ap); | |
f273827e | 477 | static void mv6_dev_config(struct ata_device *dev); |
20f733e7 | 478 | |
2a47ce06 JG |
479 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
480 | unsigned int port); | |
47c2b677 JG |
481 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
482 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, | |
483 | void __iomem *mmio); | |
c9d39130 JG |
484 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
485 | unsigned int n_hc); | |
522479fb | 486 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); |
7bb3c529 | 487 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio); |
47c2b677 | 488 | |
2a47ce06 JG |
489 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
490 | unsigned int port); | |
47c2b677 JG |
491 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
492 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, | |
493 | void __iomem *mmio); | |
c9d39130 JG |
494 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
495 | unsigned int n_hc); | |
522479fb | 496 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); |
f351b2d6 SB |
497 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, |
498 | void __iomem *mmio); | |
499 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, | |
500 | void __iomem *mmio); | |
501 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, | |
502 | void __iomem *mmio, unsigned int n_hc); | |
503 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, | |
504 | void __iomem *mmio); | |
505 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio); | |
7bb3c529 | 506 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio); |
c9d39130 JG |
507 | static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio, |
508 | unsigned int port_no); | |
72109168 ML |
509 | static void mv_edma_cfg(struct mv_port_priv *pp, struct mv_host_priv *hpriv, |
510 | void __iomem *port_mmio, int want_ncq); | |
511 | static int __mv_stop_dma(struct ata_port *ap); | |
47c2b677 | 512 | |
eb73d558 ML |
513 | /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below |
514 | * because we have to allow room for worst case splitting of | |
515 | * PRDs for 64K boundaries in mv_fill_sg(). | |
516 | */ | |
c5d3e45a JG |
517 | static struct scsi_host_template mv5_sht = { |
518 | .module = THIS_MODULE, | |
519 | .name = DRV_NAME, | |
520 | .ioctl = ata_scsi_ioctl, | |
521 | .queuecommand = ata_scsi_queuecmd, | |
522 | .can_queue = ATA_DEF_QUEUE, | |
523 | .this_id = ATA_SHT_THIS_ID, | |
baf14aa1 | 524 | .sg_tablesize = MV_MAX_SG_CT / 2, |
c5d3e45a JG |
525 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
526 | .emulated = ATA_SHT_EMULATED, | |
527 | .use_clustering = 1, | |
528 | .proc_name = DRV_NAME, | |
529 | .dma_boundary = MV_DMA_BOUNDARY, | |
3be6cbd7 | 530 | .slave_configure = ata_scsi_slave_config, |
c5d3e45a JG |
531 | .slave_destroy = ata_scsi_slave_destroy, |
532 | .bios_param = ata_std_bios_param, | |
533 | }; | |
534 | ||
535 | static struct scsi_host_template mv6_sht = { | |
20f733e7 BR |
536 | .module = THIS_MODULE, |
537 | .name = DRV_NAME, | |
538 | .ioctl = ata_scsi_ioctl, | |
539 | .queuecommand = ata_scsi_queuecmd, | |
138bfdd0 ML |
540 | .change_queue_depth = ata_scsi_change_queue_depth, |
541 | .can_queue = MV_MAX_Q_DEPTH - 1, | |
20f733e7 | 542 | .this_id = ATA_SHT_THIS_ID, |
baf14aa1 | 543 | .sg_tablesize = MV_MAX_SG_CT / 2, |
20f733e7 BR |
544 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
545 | .emulated = ATA_SHT_EMULATED, | |
d88184fb | 546 | .use_clustering = 1, |
20f733e7 BR |
547 | .proc_name = DRV_NAME, |
548 | .dma_boundary = MV_DMA_BOUNDARY, | |
3be6cbd7 | 549 | .slave_configure = ata_scsi_slave_config, |
ccf68c34 | 550 | .slave_destroy = ata_scsi_slave_destroy, |
20f733e7 | 551 | .bios_param = ata_std_bios_param, |
20f733e7 BR |
552 | }; |
553 | ||
c9d39130 | 554 | static const struct ata_port_operations mv5_ops = { |
c9d39130 JG |
555 | .tf_load = ata_tf_load, |
556 | .tf_read = ata_tf_read, | |
557 | .check_status = ata_check_status, | |
558 | .exec_command = ata_exec_command, | |
559 | .dev_select = ata_std_dev_select, | |
560 | ||
cffacd85 | 561 | .cable_detect = ata_cable_sata, |
c9d39130 JG |
562 | |
563 | .qc_prep = mv_qc_prep, | |
564 | .qc_issue = mv_qc_issue, | |
0d5ff566 | 565 | .data_xfer = ata_data_xfer, |
c9d39130 | 566 | |
c9d39130 | 567 | .irq_clear = mv_irq_clear, |
246ce3b6 | 568 | .irq_on = ata_irq_on, |
c9d39130 | 569 | |
bdd4ddde | 570 | .error_handler = mv_error_handler, |
bdd4ddde JG |
571 | .freeze = mv_eh_freeze, |
572 | .thaw = mv_eh_thaw, | |
573 | ||
c9d39130 JG |
574 | .scr_read = mv5_scr_read, |
575 | .scr_write = mv5_scr_write, | |
576 | ||
577 | .port_start = mv_port_start, | |
578 | .port_stop = mv_port_stop, | |
c9d39130 JG |
579 | }; |
580 | ||
581 | static const struct ata_port_operations mv6_ops = { | |
f273827e | 582 | .dev_config = mv6_dev_config, |
20f733e7 BR |
583 | .tf_load = ata_tf_load, |
584 | .tf_read = ata_tf_read, | |
585 | .check_status = ata_check_status, | |
586 | .exec_command = ata_exec_command, | |
587 | .dev_select = ata_std_dev_select, | |
588 | ||
cffacd85 | 589 | .cable_detect = ata_cable_sata, |
20f733e7 | 590 | |
31961943 BR |
591 | .qc_prep = mv_qc_prep, |
592 | .qc_issue = mv_qc_issue, | |
0d5ff566 | 593 | .data_xfer = ata_data_xfer, |
20f733e7 | 594 | |
20f733e7 | 595 | .irq_clear = mv_irq_clear, |
246ce3b6 | 596 | .irq_on = ata_irq_on, |
20f733e7 | 597 | |
bdd4ddde | 598 | .error_handler = mv_error_handler, |
bdd4ddde JG |
599 | .freeze = mv_eh_freeze, |
600 | .thaw = mv_eh_thaw, | |
138bfdd0 | 601 | .qc_defer = ata_std_qc_defer, |
bdd4ddde | 602 | |
20f733e7 BR |
603 | .scr_read = mv_scr_read, |
604 | .scr_write = mv_scr_write, | |
605 | ||
31961943 BR |
606 | .port_start = mv_port_start, |
607 | .port_stop = mv_port_stop, | |
20f733e7 BR |
608 | }; |
609 | ||
e4e7b892 | 610 | static const struct ata_port_operations mv_iie_ops = { |
e4e7b892 JG |
611 | .tf_load = ata_tf_load, |
612 | .tf_read = ata_tf_read, | |
613 | .check_status = ata_check_status, | |
614 | .exec_command = ata_exec_command, | |
615 | .dev_select = ata_std_dev_select, | |
616 | ||
cffacd85 | 617 | .cable_detect = ata_cable_sata, |
e4e7b892 JG |
618 | |
619 | .qc_prep = mv_qc_prep_iie, | |
620 | .qc_issue = mv_qc_issue, | |
0d5ff566 | 621 | .data_xfer = ata_data_xfer, |
e4e7b892 | 622 | |
e4e7b892 | 623 | .irq_clear = mv_irq_clear, |
246ce3b6 | 624 | .irq_on = ata_irq_on, |
e4e7b892 | 625 | |
bdd4ddde | 626 | .error_handler = mv_error_handler, |
bdd4ddde JG |
627 | .freeze = mv_eh_freeze, |
628 | .thaw = mv_eh_thaw, | |
138bfdd0 | 629 | .qc_defer = ata_std_qc_defer, |
bdd4ddde | 630 | |
e4e7b892 JG |
631 | .scr_read = mv_scr_read, |
632 | .scr_write = mv_scr_write, | |
633 | ||
634 | .port_start = mv_port_start, | |
635 | .port_stop = mv_port_stop, | |
e4e7b892 JG |
636 | }; |
637 | ||
98ac62de | 638 | static const struct ata_port_info mv_port_info[] = { |
20f733e7 | 639 | { /* chip_504x */ |
cca3974e | 640 | .flags = MV_COMMON_FLAGS, |
31961943 | 641 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 642 | .udma_mask = ATA_UDMA6, |
c9d39130 | 643 | .port_ops = &mv5_ops, |
20f733e7 BR |
644 | }, |
645 | { /* chip_508x */ | |
c5d3e45a | 646 | .flags = MV_COMMON_FLAGS | MV_FLAG_DUAL_HC, |
31961943 | 647 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 648 | .udma_mask = ATA_UDMA6, |
c9d39130 | 649 | .port_ops = &mv5_ops, |
20f733e7 | 650 | }, |
47c2b677 | 651 | { /* chip_5080 */ |
c5d3e45a | 652 | .flags = MV_COMMON_FLAGS | MV_FLAG_DUAL_HC, |
47c2b677 | 653 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 654 | .udma_mask = ATA_UDMA6, |
c9d39130 | 655 | .port_ops = &mv5_ops, |
47c2b677 | 656 | }, |
20f733e7 | 657 | { /* chip_604x */ |
138bfdd0 ML |
658 | .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS | |
659 | ATA_FLAG_NCQ, | |
31961943 | 660 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 661 | .udma_mask = ATA_UDMA6, |
c9d39130 | 662 | .port_ops = &mv6_ops, |
20f733e7 BR |
663 | }, |
664 | { /* chip_608x */ | |
c5d3e45a | 665 | .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS | |
138bfdd0 | 666 | ATA_FLAG_NCQ | MV_FLAG_DUAL_HC, |
31961943 | 667 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 668 | .udma_mask = ATA_UDMA6, |
c9d39130 | 669 | .port_ops = &mv6_ops, |
20f733e7 | 670 | }, |
e4e7b892 | 671 | { /* chip_6042 */ |
138bfdd0 ML |
672 | .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS | |
673 | ATA_FLAG_NCQ, | |
e4e7b892 | 674 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 675 | .udma_mask = ATA_UDMA6, |
e4e7b892 JG |
676 | .port_ops = &mv_iie_ops, |
677 | }, | |
678 | { /* chip_7042 */ | |
138bfdd0 ML |
679 | .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS | |
680 | ATA_FLAG_NCQ, | |
e4e7b892 | 681 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 682 | .udma_mask = ATA_UDMA6, |
e4e7b892 JG |
683 | .port_ops = &mv_iie_ops, |
684 | }, | |
f351b2d6 SB |
685 | { /* chip_soc */ |
686 | .flags = MV_COMMON_FLAGS | MV_FLAG_SOC, | |
687 | .pio_mask = 0x1f, /* pio0-4 */ | |
688 | .udma_mask = ATA_UDMA6, | |
689 | .port_ops = &mv_iie_ops, | |
690 | }, | |
20f733e7 BR |
691 | }; |
692 | ||
3b7d697d | 693 | static const struct pci_device_id mv_pci_tbl[] = { |
2d2744fc JG |
694 | { PCI_VDEVICE(MARVELL, 0x5040), chip_504x }, |
695 | { PCI_VDEVICE(MARVELL, 0x5041), chip_504x }, | |
696 | { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 }, | |
697 | { PCI_VDEVICE(MARVELL, 0x5081), chip_508x }, | |
cfbf723e AC |
698 | /* RocketRAID 1740/174x have different identifiers */ |
699 | { PCI_VDEVICE(TTI, 0x1740), chip_508x }, | |
700 | { PCI_VDEVICE(TTI, 0x1742), chip_508x }, | |
2d2744fc JG |
701 | |
702 | { PCI_VDEVICE(MARVELL, 0x6040), chip_604x }, | |
703 | { PCI_VDEVICE(MARVELL, 0x6041), chip_604x }, | |
704 | { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 }, | |
705 | { PCI_VDEVICE(MARVELL, 0x6080), chip_608x }, | |
706 | { PCI_VDEVICE(MARVELL, 0x6081), chip_608x }, | |
707 | ||
708 | { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x }, | |
709 | ||
d9f9c6bc FA |
710 | /* Adaptec 1430SA */ |
711 | { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 }, | |
712 | ||
02a121da | 713 | /* Marvell 7042 support */ |
6a3d586d MT |
714 | { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 }, |
715 | ||
02a121da ML |
716 | /* Highpoint RocketRAID PCIe series */ |
717 | { PCI_VDEVICE(TTI, 0x2300), chip_7042 }, | |
718 | { PCI_VDEVICE(TTI, 0x2310), chip_7042 }, | |
719 | ||
2d2744fc | 720 | { } /* terminate list */ |
20f733e7 BR |
721 | }; |
722 | ||
47c2b677 JG |
723 | static const struct mv_hw_ops mv5xxx_ops = { |
724 | .phy_errata = mv5_phy_errata, | |
725 | .enable_leds = mv5_enable_leds, | |
726 | .read_preamp = mv5_read_preamp, | |
727 | .reset_hc = mv5_reset_hc, | |
522479fb JG |
728 | .reset_flash = mv5_reset_flash, |
729 | .reset_bus = mv5_reset_bus, | |
47c2b677 JG |
730 | }; |
731 | ||
732 | static const struct mv_hw_ops mv6xxx_ops = { | |
733 | .phy_errata = mv6_phy_errata, | |
734 | .enable_leds = mv6_enable_leds, | |
735 | .read_preamp = mv6_read_preamp, | |
736 | .reset_hc = mv6_reset_hc, | |
522479fb JG |
737 | .reset_flash = mv6_reset_flash, |
738 | .reset_bus = mv_reset_pci_bus, | |
47c2b677 JG |
739 | }; |
740 | ||
f351b2d6 SB |
741 | static const struct mv_hw_ops mv_soc_ops = { |
742 | .phy_errata = mv6_phy_errata, | |
743 | .enable_leds = mv_soc_enable_leds, | |
744 | .read_preamp = mv_soc_read_preamp, | |
745 | .reset_hc = mv_soc_reset_hc, | |
746 | .reset_flash = mv_soc_reset_flash, | |
747 | .reset_bus = mv_soc_reset_bus, | |
748 | }; | |
749 | ||
20f733e7 BR |
750 | /* |
751 | * Functions | |
752 | */ | |
753 | ||
754 | static inline void writelfl(unsigned long data, void __iomem *addr) | |
755 | { | |
756 | writel(data, addr); | |
757 | (void) readl(addr); /* flush to avoid PCI posted write */ | |
758 | } | |
759 | ||
20f733e7 BR |
760 | static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc) |
761 | { | |
762 | return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ)); | |
763 | } | |
764 | ||
c9d39130 JG |
765 | static inline unsigned int mv_hc_from_port(unsigned int port) |
766 | { | |
767 | return port >> MV_PORT_HC_SHIFT; | |
768 | } | |
769 | ||
770 | static inline unsigned int mv_hardport_from_port(unsigned int port) | |
771 | { | |
772 | return port & MV_PORT_MASK; | |
773 | } | |
774 | ||
775 | static inline void __iomem *mv_hc_base_from_port(void __iomem *base, | |
776 | unsigned int port) | |
777 | { | |
778 | return mv_hc_base(base, mv_hc_from_port(port)); | |
779 | } | |
780 | ||
20f733e7 BR |
781 | static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port) |
782 | { | |
c9d39130 | 783 | return mv_hc_base_from_port(base, port) + |
8b260248 | 784 | MV_SATAHC_ARBTR_REG_SZ + |
c9d39130 | 785 | (mv_hardport_from_port(port) * MV_PORT_REG_SZ); |
20f733e7 BR |
786 | } |
787 | ||
f351b2d6 SB |
788 | static inline void __iomem *mv_host_base(struct ata_host *host) |
789 | { | |
790 | struct mv_host_priv *hpriv = host->private_data; | |
791 | return hpriv->base; | |
792 | } | |
793 | ||
20f733e7 BR |
794 | static inline void __iomem *mv_ap_base(struct ata_port *ap) |
795 | { | |
f351b2d6 | 796 | return mv_port_base(mv_host_base(ap->host), ap->port_no); |
20f733e7 BR |
797 | } |
798 | ||
cca3974e | 799 | static inline int mv_get_hc_count(unsigned long port_flags) |
31961943 | 800 | { |
cca3974e | 801 | return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1); |
31961943 BR |
802 | } |
803 | ||
804 | static void mv_irq_clear(struct ata_port *ap) | |
20f733e7 | 805 | { |
20f733e7 BR |
806 | } |
807 | ||
c5d3e45a JG |
808 | static void mv_set_edma_ptrs(void __iomem *port_mmio, |
809 | struct mv_host_priv *hpriv, | |
810 | struct mv_port_priv *pp) | |
811 | { | |
bdd4ddde JG |
812 | u32 index; |
813 | ||
c5d3e45a JG |
814 | /* |
815 | * initialize request queue | |
816 | */ | |
bdd4ddde JG |
817 | index = (pp->req_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_REQ_Q_PTR_SHIFT; |
818 | ||
c5d3e45a JG |
819 | WARN_ON(pp->crqb_dma & 0x3ff); |
820 | writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS); | |
bdd4ddde | 821 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index, |
c5d3e45a JG |
822 | port_mmio + EDMA_REQ_Q_IN_PTR_OFS); |
823 | ||
824 | if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0) | |
bdd4ddde | 825 | writelfl((pp->crqb_dma & 0xffffffff) | index, |
c5d3e45a JG |
826 | port_mmio + EDMA_REQ_Q_OUT_PTR_OFS); |
827 | else | |
bdd4ddde | 828 | writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS); |
c5d3e45a JG |
829 | |
830 | /* | |
831 | * initialize response queue | |
832 | */ | |
bdd4ddde JG |
833 | index = (pp->resp_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_RSP_Q_PTR_SHIFT; |
834 | ||
c5d3e45a JG |
835 | WARN_ON(pp->crpb_dma & 0xff); |
836 | writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS); | |
837 | ||
838 | if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0) | |
bdd4ddde | 839 | writelfl((pp->crpb_dma & 0xffffffff) | index, |
c5d3e45a JG |
840 | port_mmio + EDMA_RSP_Q_IN_PTR_OFS); |
841 | else | |
bdd4ddde | 842 | writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS); |
c5d3e45a | 843 | |
bdd4ddde | 844 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index, |
c5d3e45a | 845 | port_mmio + EDMA_RSP_Q_OUT_PTR_OFS); |
c5d3e45a JG |
846 | } |
847 | ||
05b308e1 BR |
848 | /** |
849 | * mv_start_dma - Enable eDMA engine | |
850 | * @base: port base address | |
851 | * @pp: port private data | |
852 | * | |
beec7dbc TH |
853 | * Verify the local cache of the eDMA state is accurate with a |
854 | * WARN_ON. | |
05b308e1 BR |
855 | * |
856 | * LOCKING: | |
857 | * Inherited from caller. | |
858 | */ | |
0c58912e | 859 | static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio, |
72109168 | 860 | struct mv_port_priv *pp, u8 protocol) |
20f733e7 | 861 | { |
72109168 ML |
862 | int want_ncq = (protocol == ATA_PROT_NCQ); |
863 | ||
864 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { | |
865 | int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0); | |
866 | if (want_ncq != using_ncq) | |
867 | __mv_stop_dma(ap); | |
868 | } | |
c5d3e45a | 869 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) { |
0c58912e ML |
870 | struct mv_host_priv *hpriv = ap->host->private_data; |
871 | int hard_port = mv_hardport_from_port(ap->port_no); | |
872 | void __iomem *hc_mmio = mv_hc_base_from_port( | |
0fca0d6f | 873 | mv_host_base(ap->host), hard_port); |
0c58912e ML |
874 | u32 hc_irq_cause, ipending; |
875 | ||
bdd4ddde | 876 | /* clear EDMA event indicators, if any */ |
f630d562 | 877 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
bdd4ddde | 878 | |
0c58912e ML |
879 | /* clear EDMA interrupt indicator, if any */ |
880 | hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS); | |
881 | ipending = (DEV_IRQ << hard_port) | | |
882 | (CRPB_DMA_DONE << hard_port); | |
883 | if (hc_irq_cause & ipending) { | |
884 | writelfl(hc_irq_cause & ~ipending, | |
885 | hc_mmio + HC_IRQ_CAUSE_OFS); | |
886 | } | |
887 | ||
72109168 | 888 | mv_edma_cfg(pp, hpriv, port_mmio, want_ncq); |
0c58912e ML |
889 | |
890 | /* clear FIS IRQ Cause */ | |
891 | writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS); | |
892 | ||
f630d562 | 893 | mv_set_edma_ptrs(port_mmio, hpriv, pp); |
bdd4ddde | 894 | |
f630d562 | 895 | writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS); |
afb0edd9 BR |
896 | pp->pp_flags |= MV_PP_FLAG_EDMA_EN; |
897 | } | |
f630d562 | 898 | WARN_ON(!(EDMA_EN & readl(port_mmio + EDMA_CMD_OFS))); |
20f733e7 BR |
899 | } |
900 | ||
05b308e1 | 901 | /** |
0ea9e179 | 902 | * __mv_stop_dma - Disable eDMA engine |
05b308e1 BR |
903 | * @ap: ATA channel to manipulate |
904 | * | |
beec7dbc TH |
905 | * Verify the local cache of the eDMA state is accurate with a |
906 | * WARN_ON. | |
05b308e1 BR |
907 | * |
908 | * LOCKING: | |
909 | * Inherited from caller. | |
910 | */ | |
0ea9e179 | 911 | static int __mv_stop_dma(struct ata_port *ap) |
20f733e7 | 912 | { |
31961943 BR |
913 | void __iomem *port_mmio = mv_ap_base(ap); |
914 | struct mv_port_priv *pp = ap->private_data; | |
31961943 | 915 | u32 reg; |
c5d3e45a | 916 | int i, err = 0; |
31961943 | 917 | |
4537deb5 | 918 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { |
afb0edd9 | 919 | /* Disable EDMA if active. The disable bit auto clears. |
31961943 | 920 | */ |
31961943 BR |
921 | writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS); |
922 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; | |
afb0edd9 | 923 | } else { |
beec7dbc | 924 | WARN_ON(EDMA_EN & readl(port_mmio + EDMA_CMD_OFS)); |
2dcb407e | 925 | } |
8b260248 | 926 | |
31961943 BR |
927 | /* now properly wait for the eDMA to stop */ |
928 | for (i = 1000; i > 0; i--) { | |
929 | reg = readl(port_mmio + EDMA_CMD_OFS); | |
4537deb5 | 930 | if (!(reg & EDMA_EN)) |
31961943 | 931 | break; |
4537deb5 | 932 | |
31961943 BR |
933 | udelay(100); |
934 | } | |
935 | ||
c5d3e45a | 936 | if (reg & EDMA_EN) { |
f15a1daf | 937 | ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n"); |
c5d3e45a | 938 | err = -EIO; |
31961943 | 939 | } |
c5d3e45a JG |
940 | |
941 | return err; | |
20f733e7 BR |
942 | } |
943 | ||
0ea9e179 JG |
944 | static int mv_stop_dma(struct ata_port *ap) |
945 | { | |
946 | unsigned long flags; | |
947 | int rc; | |
948 | ||
949 | spin_lock_irqsave(&ap->host->lock, flags); | |
950 | rc = __mv_stop_dma(ap); | |
951 | spin_unlock_irqrestore(&ap->host->lock, flags); | |
952 | ||
953 | return rc; | |
954 | } | |
955 | ||
8a70f8dc | 956 | #ifdef ATA_DEBUG |
31961943 | 957 | static void mv_dump_mem(void __iomem *start, unsigned bytes) |
20f733e7 | 958 | { |
31961943 BR |
959 | int b, w; |
960 | for (b = 0; b < bytes; ) { | |
961 | DPRINTK("%p: ", start + b); | |
962 | for (w = 0; b < bytes && w < 4; w++) { | |
2dcb407e | 963 | printk("%08x ", readl(start + b)); |
31961943 BR |
964 | b += sizeof(u32); |
965 | } | |
966 | printk("\n"); | |
967 | } | |
31961943 | 968 | } |
8a70f8dc JG |
969 | #endif |
970 | ||
31961943 BR |
971 | static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes) |
972 | { | |
973 | #ifdef ATA_DEBUG | |
974 | int b, w; | |
975 | u32 dw; | |
976 | for (b = 0; b < bytes; ) { | |
977 | DPRINTK("%02x: ", b); | |
978 | for (w = 0; b < bytes && w < 4; w++) { | |
2dcb407e JG |
979 | (void) pci_read_config_dword(pdev, b, &dw); |
980 | printk("%08x ", dw); | |
31961943 BR |
981 | b += sizeof(u32); |
982 | } | |
983 | printk("\n"); | |
984 | } | |
985 | #endif | |
986 | } | |
987 | static void mv_dump_all_regs(void __iomem *mmio_base, int port, | |
988 | struct pci_dev *pdev) | |
989 | { | |
990 | #ifdef ATA_DEBUG | |
8b260248 | 991 | void __iomem *hc_base = mv_hc_base(mmio_base, |
31961943 BR |
992 | port >> MV_PORT_HC_SHIFT); |
993 | void __iomem *port_base; | |
994 | int start_port, num_ports, p, start_hc, num_hcs, hc; | |
995 | ||
996 | if (0 > port) { | |
997 | start_hc = start_port = 0; | |
998 | num_ports = 8; /* shld be benign for 4 port devs */ | |
999 | num_hcs = 2; | |
1000 | } else { | |
1001 | start_hc = port >> MV_PORT_HC_SHIFT; | |
1002 | start_port = port; | |
1003 | num_ports = num_hcs = 1; | |
1004 | } | |
8b260248 | 1005 | DPRINTK("All registers for port(s) %u-%u:\n", start_port, |
31961943 BR |
1006 | num_ports > 1 ? num_ports - 1 : start_port); |
1007 | ||
1008 | if (NULL != pdev) { | |
1009 | DPRINTK("PCI config space regs:\n"); | |
1010 | mv_dump_pci_cfg(pdev, 0x68); | |
1011 | } | |
1012 | DPRINTK("PCI regs:\n"); | |
1013 | mv_dump_mem(mmio_base+0xc00, 0x3c); | |
1014 | mv_dump_mem(mmio_base+0xd00, 0x34); | |
1015 | mv_dump_mem(mmio_base+0xf00, 0x4); | |
1016 | mv_dump_mem(mmio_base+0x1d00, 0x6c); | |
1017 | for (hc = start_hc; hc < start_hc + num_hcs; hc++) { | |
d220c37e | 1018 | hc_base = mv_hc_base(mmio_base, hc); |
31961943 BR |
1019 | DPRINTK("HC regs (HC %i):\n", hc); |
1020 | mv_dump_mem(hc_base, 0x1c); | |
1021 | } | |
1022 | for (p = start_port; p < start_port + num_ports; p++) { | |
1023 | port_base = mv_port_base(mmio_base, p); | |
2dcb407e | 1024 | DPRINTK("EDMA regs (port %i):\n", p); |
31961943 | 1025 | mv_dump_mem(port_base, 0x54); |
2dcb407e | 1026 | DPRINTK("SATA regs (port %i):\n", p); |
31961943 BR |
1027 | mv_dump_mem(port_base+0x300, 0x60); |
1028 | } | |
1029 | #endif | |
20f733e7 BR |
1030 | } |
1031 | ||
1032 | static unsigned int mv_scr_offset(unsigned int sc_reg_in) | |
1033 | { | |
1034 | unsigned int ofs; | |
1035 | ||
1036 | switch (sc_reg_in) { | |
1037 | case SCR_STATUS: | |
1038 | case SCR_CONTROL: | |
1039 | case SCR_ERROR: | |
1040 | ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32)); | |
1041 | break; | |
1042 | case SCR_ACTIVE: | |
1043 | ofs = SATA_ACTIVE_OFS; /* active is not with the others */ | |
1044 | break; | |
1045 | default: | |
1046 | ofs = 0xffffffffU; | |
1047 | break; | |
1048 | } | |
1049 | return ofs; | |
1050 | } | |
1051 | ||
da3dbb17 | 1052 | static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val) |
20f733e7 BR |
1053 | { |
1054 | unsigned int ofs = mv_scr_offset(sc_reg_in); | |
1055 | ||
da3dbb17 TH |
1056 | if (ofs != 0xffffffffU) { |
1057 | *val = readl(mv_ap_base(ap) + ofs); | |
1058 | return 0; | |
1059 | } else | |
1060 | return -EINVAL; | |
20f733e7 BR |
1061 | } |
1062 | ||
da3dbb17 | 1063 | static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val) |
20f733e7 BR |
1064 | { |
1065 | unsigned int ofs = mv_scr_offset(sc_reg_in); | |
1066 | ||
da3dbb17 | 1067 | if (ofs != 0xffffffffU) { |
20f733e7 | 1068 | writelfl(val, mv_ap_base(ap) + ofs); |
da3dbb17 TH |
1069 | return 0; |
1070 | } else | |
1071 | return -EINVAL; | |
20f733e7 BR |
1072 | } |
1073 | ||
f273827e ML |
1074 | static void mv6_dev_config(struct ata_device *adev) |
1075 | { | |
1076 | /* | |
1077 | * We don't have hob_nsect when doing NCQ commands on Gen-II. | |
1078 | * See mv_qc_prep() for more info. | |
1079 | */ | |
1080 | if (adev->flags & ATA_DFLAG_NCQ) | |
1081 | if (adev->max_sectors > ATA_MAX_SECTORS) | |
1082 | adev->max_sectors = ATA_MAX_SECTORS; | |
1083 | } | |
1084 | ||
72109168 ML |
1085 | static void mv_edma_cfg(struct mv_port_priv *pp, struct mv_host_priv *hpriv, |
1086 | void __iomem *port_mmio, int want_ncq) | |
e4e7b892 | 1087 | { |
0c58912e | 1088 | u32 cfg; |
e4e7b892 JG |
1089 | |
1090 | /* set up non-NCQ EDMA configuration */ | |
0c58912e | 1091 | cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */ |
e4e7b892 | 1092 | |
0c58912e | 1093 | if (IS_GEN_I(hpriv)) |
e4e7b892 JG |
1094 | cfg |= (1 << 8); /* enab config burst size mask */ |
1095 | ||
0c58912e | 1096 | else if (IS_GEN_II(hpriv)) |
e4e7b892 JG |
1097 | cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN; |
1098 | ||
1099 | else if (IS_GEN_IIE(hpriv)) { | |
e728eabe JG |
1100 | cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */ |
1101 | cfg |= (1 << 22); /* enab 4-entry host queue cache */ | |
e4e7b892 | 1102 | cfg |= (1 << 18); /* enab early completion */ |
e728eabe | 1103 | cfg |= (1 << 17); /* enab cut-through (dis stor&forwrd) */ |
e4e7b892 JG |
1104 | } |
1105 | ||
72109168 ML |
1106 | if (want_ncq) { |
1107 | cfg |= EDMA_CFG_NCQ; | |
1108 | pp->pp_flags |= MV_PP_FLAG_NCQ_EN; | |
1109 | } else | |
1110 | pp->pp_flags &= ~MV_PP_FLAG_NCQ_EN; | |
1111 | ||
e4e7b892 JG |
1112 | writelfl(cfg, port_mmio + EDMA_CFG_OFS); |
1113 | } | |
1114 | ||
da2fa9ba ML |
1115 | static void mv_port_free_dma_mem(struct ata_port *ap) |
1116 | { | |
1117 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1118 | struct mv_port_priv *pp = ap->private_data; | |
eb73d558 | 1119 | int tag; |
da2fa9ba ML |
1120 | |
1121 | if (pp->crqb) { | |
1122 | dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma); | |
1123 | pp->crqb = NULL; | |
1124 | } | |
1125 | if (pp->crpb) { | |
1126 | dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma); | |
1127 | pp->crpb = NULL; | |
1128 | } | |
eb73d558 ML |
1129 | /* |
1130 | * For GEN_I, there's no NCQ, so we have only a single sg_tbl. | |
1131 | * For later hardware, we have one unique sg_tbl per NCQ tag. | |
1132 | */ | |
1133 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { | |
1134 | if (pp->sg_tbl[tag]) { | |
1135 | if (tag == 0 || !IS_GEN_I(hpriv)) | |
1136 | dma_pool_free(hpriv->sg_tbl_pool, | |
1137 | pp->sg_tbl[tag], | |
1138 | pp->sg_tbl_dma[tag]); | |
1139 | pp->sg_tbl[tag] = NULL; | |
1140 | } | |
da2fa9ba ML |
1141 | } |
1142 | } | |
1143 | ||
05b308e1 BR |
1144 | /** |
1145 | * mv_port_start - Port specific init/start routine. | |
1146 | * @ap: ATA channel to manipulate | |
1147 | * | |
1148 | * Allocate and point to DMA memory, init port private memory, | |
1149 | * zero indices. | |
1150 | * | |
1151 | * LOCKING: | |
1152 | * Inherited from caller. | |
1153 | */ | |
31961943 BR |
1154 | static int mv_port_start(struct ata_port *ap) |
1155 | { | |
cca3974e JG |
1156 | struct device *dev = ap->host->dev; |
1157 | struct mv_host_priv *hpriv = ap->host->private_data; | |
31961943 BR |
1158 | struct mv_port_priv *pp; |
1159 | void __iomem *port_mmio = mv_ap_base(ap); | |
0ea9e179 | 1160 | unsigned long flags; |
dde20207 | 1161 | int tag; |
31961943 | 1162 | |
24dc5f33 | 1163 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
6037d6bb | 1164 | if (!pp) |
24dc5f33 | 1165 | return -ENOMEM; |
da2fa9ba | 1166 | ap->private_data = pp; |
31961943 | 1167 | |
da2fa9ba ML |
1168 | pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma); |
1169 | if (!pp->crqb) | |
1170 | return -ENOMEM; | |
1171 | memset(pp->crqb, 0, MV_CRQB_Q_SZ); | |
31961943 | 1172 | |
da2fa9ba ML |
1173 | pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma); |
1174 | if (!pp->crpb) | |
1175 | goto out_port_free_dma_mem; | |
1176 | memset(pp->crpb, 0, MV_CRPB_Q_SZ); | |
31961943 | 1177 | |
eb73d558 ML |
1178 | /* |
1179 | * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl. | |
1180 | * For later hardware, we need one unique sg_tbl per NCQ tag. | |
1181 | */ | |
1182 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { | |
1183 | if (tag == 0 || !IS_GEN_I(hpriv)) { | |
1184 | pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool, | |
1185 | GFP_KERNEL, &pp->sg_tbl_dma[tag]); | |
1186 | if (!pp->sg_tbl[tag]) | |
1187 | goto out_port_free_dma_mem; | |
1188 | } else { | |
1189 | pp->sg_tbl[tag] = pp->sg_tbl[0]; | |
1190 | pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0]; | |
1191 | } | |
1192 | } | |
31961943 | 1193 | |
0ea9e179 JG |
1194 | spin_lock_irqsave(&ap->host->lock, flags); |
1195 | ||
72109168 | 1196 | mv_edma_cfg(pp, hpriv, port_mmio, 0); |
c5d3e45a | 1197 | mv_set_edma_ptrs(port_mmio, hpriv, pp); |
31961943 | 1198 | |
0ea9e179 JG |
1199 | spin_unlock_irqrestore(&ap->host->lock, flags); |
1200 | ||
31961943 BR |
1201 | /* Don't turn on EDMA here...do it before DMA commands only. Else |
1202 | * we'll be unable to send non-data, PIO, etc due to restricted access | |
1203 | * to shadow regs. | |
1204 | */ | |
31961943 | 1205 | return 0; |
da2fa9ba ML |
1206 | |
1207 | out_port_free_dma_mem: | |
1208 | mv_port_free_dma_mem(ap); | |
1209 | return -ENOMEM; | |
31961943 BR |
1210 | } |
1211 | ||
05b308e1 BR |
1212 | /** |
1213 | * mv_port_stop - Port specific cleanup/stop routine. | |
1214 | * @ap: ATA channel to manipulate | |
1215 | * | |
1216 | * Stop DMA, cleanup port memory. | |
1217 | * | |
1218 | * LOCKING: | |
cca3974e | 1219 | * This routine uses the host lock to protect the DMA stop. |
05b308e1 | 1220 | */ |
31961943 BR |
1221 | static void mv_port_stop(struct ata_port *ap) |
1222 | { | |
31961943 | 1223 | mv_stop_dma(ap); |
da2fa9ba | 1224 | mv_port_free_dma_mem(ap); |
31961943 BR |
1225 | } |
1226 | ||
05b308e1 BR |
1227 | /** |
1228 | * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries | |
1229 | * @qc: queued command whose SG list to source from | |
1230 | * | |
1231 | * Populate the SG list and mark the last entry. | |
1232 | * | |
1233 | * LOCKING: | |
1234 | * Inherited from caller. | |
1235 | */ | |
6c08772e | 1236 | static void mv_fill_sg(struct ata_queued_cmd *qc) |
31961943 BR |
1237 | { |
1238 | struct mv_port_priv *pp = qc->ap->private_data; | |
972c26bd | 1239 | struct scatterlist *sg; |
3be6cbd7 | 1240 | struct mv_sg *mv_sg, *last_sg = NULL; |
ff2aeb1e | 1241 | unsigned int si; |
31961943 | 1242 | |
eb73d558 | 1243 | mv_sg = pp->sg_tbl[qc->tag]; |
ff2aeb1e | 1244 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
d88184fb JG |
1245 | dma_addr_t addr = sg_dma_address(sg); |
1246 | u32 sg_len = sg_dma_len(sg); | |
22374677 | 1247 | |
4007b493 OJ |
1248 | while (sg_len) { |
1249 | u32 offset = addr & 0xffff; | |
1250 | u32 len = sg_len; | |
22374677 | 1251 | |
4007b493 OJ |
1252 | if ((offset + sg_len > 0x10000)) |
1253 | len = 0x10000 - offset; | |
1254 | ||
1255 | mv_sg->addr = cpu_to_le32(addr & 0xffffffff); | |
1256 | mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); | |
6c08772e | 1257 | mv_sg->flags_size = cpu_to_le32(len & 0xffff); |
4007b493 OJ |
1258 | |
1259 | sg_len -= len; | |
1260 | addr += len; | |
1261 | ||
3be6cbd7 | 1262 | last_sg = mv_sg; |
4007b493 | 1263 | mv_sg++; |
4007b493 | 1264 | } |
31961943 | 1265 | } |
3be6cbd7 JG |
1266 | |
1267 | if (likely(last_sg)) | |
1268 | last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL); | |
31961943 BR |
1269 | } |
1270 | ||
5796d1c4 | 1271 | static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last) |
31961943 | 1272 | { |
559eedad | 1273 | u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS | |
31961943 | 1274 | (last ? CRQB_CMD_LAST : 0); |
559eedad | 1275 | *cmdw = cpu_to_le16(tmp); |
31961943 BR |
1276 | } |
1277 | ||
05b308e1 BR |
1278 | /** |
1279 | * mv_qc_prep - Host specific command preparation. | |
1280 | * @qc: queued command to prepare | |
1281 | * | |
1282 | * This routine simply redirects to the general purpose routine | |
1283 | * if command is not DMA. Else, it handles prep of the CRQB | |
1284 | * (command request block), does some sanity checking, and calls | |
1285 | * the SG load routine. | |
1286 | * | |
1287 | * LOCKING: | |
1288 | * Inherited from caller. | |
1289 | */ | |
31961943 BR |
1290 | static void mv_qc_prep(struct ata_queued_cmd *qc) |
1291 | { | |
1292 | struct ata_port *ap = qc->ap; | |
1293 | struct mv_port_priv *pp = ap->private_data; | |
e1469874 | 1294 | __le16 *cw; |
31961943 BR |
1295 | struct ata_taskfile *tf; |
1296 | u16 flags = 0; | |
a6432436 | 1297 | unsigned in_index; |
31961943 | 1298 | |
138bfdd0 ML |
1299 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
1300 | (qc->tf.protocol != ATA_PROT_NCQ)) | |
31961943 | 1301 | return; |
20f733e7 | 1302 | |
31961943 BR |
1303 | /* Fill in command request block |
1304 | */ | |
e4e7b892 | 1305 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) |
31961943 | 1306 | flags |= CRQB_FLAG_READ; |
beec7dbc | 1307 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); |
31961943 BR |
1308 | flags |= qc->tag << CRQB_TAG_SHIFT; |
1309 | ||
bdd4ddde JG |
1310 | /* get current queue index from software */ |
1311 | in_index = pp->req_idx & MV_MAX_Q_DEPTH_MASK; | |
a6432436 ML |
1312 | |
1313 | pp->crqb[in_index].sg_addr = | |
eb73d558 | 1314 | cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); |
a6432436 | 1315 | pp->crqb[in_index].sg_addr_hi = |
eb73d558 | 1316 | cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); |
a6432436 | 1317 | pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags); |
31961943 | 1318 | |
a6432436 | 1319 | cw = &pp->crqb[in_index].ata_cmd[0]; |
31961943 BR |
1320 | tf = &qc->tf; |
1321 | ||
1322 | /* Sadly, the CRQB cannot accomodate all registers--there are | |
1323 | * only 11 bytes...so we must pick and choose required | |
1324 | * registers based on the command. So, we drop feature and | |
1325 | * hob_feature for [RW] DMA commands, but they are needed for | |
1326 | * NCQ. NCQ will drop hob_nsect. | |
20f733e7 | 1327 | */ |
31961943 BR |
1328 | switch (tf->command) { |
1329 | case ATA_CMD_READ: | |
1330 | case ATA_CMD_READ_EXT: | |
1331 | case ATA_CMD_WRITE: | |
1332 | case ATA_CMD_WRITE_EXT: | |
c15d85c8 | 1333 | case ATA_CMD_WRITE_FUA_EXT: |
31961943 BR |
1334 | mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0); |
1335 | break; | |
31961943 BR |
1336 | case ATA_CMD_FPDMA_READ: |
1337 | case ATA_CMD_FPDMA_WRITE: | |
8b260248 | 1338 | mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0); |
31961943 BR |
1339 | mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0); |
1340 | break; | |
31961943 BR |
1341 | default: |
1342 | /* The only other commands EDMA supports in non-queued and | |
1343 | * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none | |
1344 | * of which are defined/used by Linux. If we get here, this | |
1345 | * driver needs work. | |
1346 | * | |
1347 | * FIXME: modify libata to give qc_prep a return value and | |
1348 | * return error here. | |
1349 | */ | |
1350 | BUG_ON(tf->command); | |
1351 | break; | |
1352 | } | |
1353 | mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0); | |
1354 | mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0); | |
1355 | mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0); | |
1356 | mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0); | |
1357 | mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0); | |
1358 | mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0); | |
1359 | mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0); | |
1360 | mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0); | |
1361 | mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */ | |
1362 | ||
e4e7b892 JG |
1363 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) |
1364 | return; | |
1365 | mv_fill_sg(qc); | |
1366 | } | |
1367 | ||
1368 | /** | |
1369 | * mv_qc_prep_iie - Host specific command preparation. | |
1370 | * @qc: queued command to prepare | |
1371 | * | |
1372 | * This routine simply redirects to the general purpose routine | |
1373 | * if command is not DMA. Else, it handles prep of the CRQB | |
1374 | * (command request block), does some sanity checking, and calls | |
1375 | * the SG load routine. | |
1376 | * | |
1377 | * LOCKING: | |
1378 | * Inherited from caller. | |
1379 | */ | |
1380 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc) | |
1381 | { | |
1382 | struct ata_port *ap = qc->ap; | |
1383 | struct mv_port_priv *pp = ap->private_data; | |
1384 | struct mv_crqb_iie *crqb; | |
1385 | struct ata_taskfile *tf; | |
a6432436 | 1386 | unsigned in_index; |
e4e7b892 JG |
1387 | u32 flags = 0; |
1388 | ||
138bfdd0 ML |
1389 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
1390 | (qc->tf.protocol != ATA_PROT_NCQ)) | |
e4e7b892 JG |
1391 | return; |
1392 | ||
e4e7b892 JG |
1393 | /* Fill in Gen IIE command request block |
1394 | */ | |
1395 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) | |
1396 | flags |= CRQB_FLAG_READ; | |
1397 | ||
beec7dbc | 1398 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); |
e4e7b892 | 1399 | flags |= qc->tag << CRQB_TAG_SHIFT; |
8c0aeb4a | 1400 | flags |= qc->tag << CRQB_HOSTQ_SHIFT; |
e4e7b892 | 1401 | |
bdd4ddde JG |
1402 | /* get current queue index from software */ |
1403 | in_index = pp->req_idx & MV_MAX_Q_DEPTH_MASK; | |
a6432436 ML |
1404 | |
1405 | crqb = (struct mv_crqb_iie *) &pp->crqb[in_index]; | |
eb73d558 ML |
1406 | crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); |
1407 | crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); | |
e4e7b892 JG |
1408 | crqb->flags = cpu_to_le32(flags); |
1409 | ||
1410 | tf = &qc->tf; | |
1411 | crqb->ata_cmd[0] = cpu_to_le32( | |
1412 | (tf->command << 16) | | |
1413 | (tf->feature << 24) | |
1414 | ); | |
1415 | crqb->ata_cmd[1] = cpu_to_le32( | |
1416 | (tf->lbal << 0) | | |
1417 | (tf->lbam << 8) | | |
1418 | (tf->lbah << 16) | | |
1419 | (tf->device << 24) | |
1420 | ); | |
1421 | crqb->ata_cmd[2] = cpu_to_le32( | |
1422 | (tf->hob_lbal << 0) | | |
1423 | (tf->hob_lbam << 8) | | |
1424 | (tf->hob_lbah << 16) | | |
1425 | (tf->hob_feature << 24) | |
1426 | ); | |
1427 | crqb->ata_cmd[3] = cpu_to_le32( | |
1428 | (tf->nsect << 0) | | |
1429 | (tf->hob_nsect << 8) | |
1430 | ); | |
1431 | ||
1432 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) | |
31961943 | 1433 | return; |
31961943 BR |
1434 | mv_fill_sg(qc); |
1435 | } | |
1436 | ||
05b308e1 BR |
1437 | /** |
1438 | * mv_qc_issue - Initiate a command to the host | |
1439 | * @qc: queued command to start | |
1440 | * | |
1441 | * This routine simply redirects to the general purpose routine | |
1442 | * if command is not DMA. Else, it sanity checks our local | |
1443 | * caches of the request producer/consumer indices then enables | |
1444 | * DMA and bumps the request producer index. | |
1445 | * | |
1446 | * LOCKING: | |
1447 | * Inherited from caller. | |
1448 | */ | |
9a3d9eb0 | 1449 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc) |
31961943 | 1450 | { |
c5d3e45a JG |
1451 | struct ata_port *ap = qc->ap; |
1452 | void __iomem *port_mmio = mv_ap_base(ap); | |
1453 | struct mv_port_priv *pp = ap->private_data; | |
bdd4ddde | 1454 | u32 in_index; |
31961943 | 1455 | |
138bfdd0 ML |
1456 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
1457 | (qc->tf.protocol != ATA_PROT_NCQ)) { | |
31961943 BR |
1458 | /* We're about to send a non-EDMA capable command to the |
1459 | * port. Turn off EDMA so there won't be problems accessing | |
1460 | * shadow block, etc registers. | |
1461 | */ | |
0ea9e179 | 1462 | __mv_stop_dma(ap); |
31961943 BR |
1463 | return ata_qc_issue_prot(qc); |
1464 | } | |
1465 | ||
72109168 | 1466 | mv_start_dma(ap, port_mmio, pp, qc->tf.protocol); |
bdd4ddde | 1467 | |
bdd4ddde | 1468 | pp->req_idx++; |
31961943 | 1469 | |
bdd4ddde | 1470 | in_index = (pp->req_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_REQ_Q_PTR_SHIFT; |
31961943 BR |
1471 | |
1472 | /* and write the request in pointer to kick the EDMA to life */ | |
bdd4ddde JG |
1473 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index, |
1474 | port_mmio + EDMA_REQ_Q_IN_PTR_OFS); | |
31961943 BR |
1475 | |
1476 | return 0; | |
1477 | } | |
1478 | ||
05b308e1 BR |
1479 | /** |
1480 | * mv_err_intr - Handle error interrupts on the port | |
1481 | * @ap: ATA channel to manipulate | |
9b358e30 | 1482 | * @reset_allowed: bool: 0 == don't trigger from reset here |
05b308e1 BR |
1483 | * |
1484 | * In most cases, just clear the interrupt and move on. However, | |
1485 | * some cases require an eDMA reset, which is done right before | |
1486 | * the COMRESET in mv_phy_reset(). The SERR case requires a | |
1487 | * clear of pending errors in the SATA SERROR register. Finally, | |
1488 | * if the port disabled DMA, update our cached copy to match. | |
1489 | * | |
1490 | * LOCKING: | |
1491 | * Inherited from caller. | |
1492 | */ | |
bdd4ddde | 1493 | static void mv_err_intr(struct ata_port *ap, struct ata_queued_cmd *qc) |
31961943 BR |
1494 | { |
1495 | void __iomem *port_mmio = mv_ap_base(ap); | |
bdd4ddde JG |
1496 | u32 edma_err_cause, eh_freeze_mask, serr = 0; |
1497 | struct mv_port_priv *pp = ap->private_data; | |
1498 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1499 | unsigned int edma_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN); | |
1500 | unsigned int action = 0, err_mask = 0; | |
9af5c9c9 | 1501 | struct ata_eh_info *ehi = &ap->link.eh_info; |
20f733e7 | 1502 | |
bdd4ddde | 1503 | ata_ehi_clear_desc(ehi); |
20f733e7 | 1504 | |
bdd4ddde JG |
1505 | if (!edma_enabled) { |
1506 | /* just a guess: do we need to do this? should we | |
1507 | * expand this, and do it in all cases? | |
1508 | */ | |
936fd732 TH |
1509 | sata_scr_read(&ap->link, SCR_ERROR, &serr); |
1510 | sata_scr_write_flush(&ap->link, SCR_ERROR, serr); | |
20f733e7 | 1511 | } |
bdd4ddde JG |
1512 | |
1513 | edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); | |
1514 | ||
1515 | ata_ehi_push_desc(ehi, "edma_err 0x%08x", edma_err_cause); | |
1516 | ||
1517 | /* | |
1518 | * all generations share these EDMA error cause bits | |
1519 | */ | |
1520 | ||
1521 | if (edma_err_cause & EDMA_ERR_DEV) | |
1522 | err_mask |= AC_ERR_DEV; | |
1523 | if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR | | |
6c1153e0 | 1524 | EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR | |
bdd4ddde JG |
1525 | EDMA_ERR_INTRL_PAR)) { |
1526 | err_mask |= AC_ERR_ATA_BUS; | |
1527 | action |= ATA_EH_HARDRESET; | |
b64bbc39 | 1528 | ata_ehi_push_desc(ehi, "parity error"); |
bdd4ddde JG |
1529 | } |
1530 | if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) { | |
1531 | ata_ehi_hotplugged(ehi); | |
1532 | ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ? | |
b64bbc39 | 1533 | "dev disconnect" : "dev connect"); |
3606a380 | 1534 | action |= ATA_EH_HARDRESET; |
bdd4ddde JG |
1535 | } |
1536 | ||
ee9ccdf7 | 1537 | if (IS_GEN_I(hpriv)) { |
bdd4ddde JG |
1538 | eh_freeze_mask = EDMA_EH_FREEZE_5; |
1539 | ||
1540 | if (edma_err_cause & EDMA_ERR_SELF_DIS_5) { | |
5ab063e3 | 1541 | pp = ap->private_data; |
bdd4ddde | 1542 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
b64bbc39 | 1543 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
bdd4ddde JG |
1544 | } |
1545 | } else { | |
1546 | eh_freeze_mask = EDMA_EH_FREEZE; | |
1547 | ||
1548 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { | |
5ab063e3 | 1549 | pp = ap->private_data; |
bdd4ddde | 1550 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
b64bbc39 | 1551 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
bdd4ddde JG |
1552 | } |
1553 | ||
1554 | if (edma_err_cause & EDMA_ERR_SERR) { | |
936fd732 TH |
1555 | sata_scr_read(&ap->link, SCR_ERROR, &serr); |
1556 | sata_scr_write_flush(&ap->link, SCR_ERROR, serr); | |
bdd4ddde JG |
1557 | err_mask = AC_ERR_ATA_BUS; |
1558 | action |= ATA_EH_HARDRESET; | |
1559 | } | |
afb0edd9 | 1560 | } |
20f733e7 BR |
1561 | |
1562 | /* Clear EDMA now that SERR cleanup done */ | |
3606a380 | 1563 | writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
20f733e7 | 1564 | |
bdd4ddde JG |
1565 | if (!err_mask) { |
1566 | err_mask = AC_ERR_OTHER; | |
1567 | action |= ATA_EH_HARDRESET; | |
1568 | } | |
1569 | ||
1570 | ehi->serror |= serr; | |
1571 | ehi->action |= action; | |
1572 | ||
1573 | if (qc) | |
1574 | qc->err_mask |= err_mask; | |
1575 | else | |
1576 | ehi->err_mask |= err_mask; | |
1577 | ||
1578 | if (edma_err_cause & eh_freeze_mask) | |
1579 | ata_port_freeze(ap); | |
1580 | else | |
1581 | ata_port_abort(ap); | |
1582 | } | |
1583 | ||
1584 | static void mv_intr_pio(struct ata_port *ap) | |
1585 | { | |
1586 | struct ata_queued_cmd *qc; | |
1587 | u8 ata_status; | |
1588 | ||
1589 | /* ignore spurious intr if drive still BUSY */ | |
1590 | ata_status = readb(ap->ioaddr.status_addr); | |
1591 | if (unlikely(ata_status & ATA_BUSY)) | |
1592 | return; | |
1593 | ||
1594 | /* get active ATA command */ | |
9af5c9c9 | 1595 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
bdd4ddde JG |
1596 | if (unlikely(!qc)) /* no active tag */ |
1597 | return; | |
1598 | if (qc->tf.flags & ATA_TFLAG_POLLING) /* polling; we don't own qc */ | |
1599 | return; | |
1600 | ||
1601 | /* and finally, complete the ATA command */ | |
1602 | qc->err_mask |= ac_err_mask(ata_status); | |
1603 | ata_qc_complete(qc); | |
1604 | } | |
1605 | ||
1606 | static void mv_intr_edma(struct ata_port *ap) | |
1607 | { | |
1608 | void __iomem *port_mmio = mv_ap_base(ap); | |
1609 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1610 | struct mv_port_priv *pp = ap->private_data; | |
1611 | struct ata_queued_cmd *qc; | |
1612 | u32 out_index, in_index; | |
1613 | bool work_done = false; | |
1614 | ||
1615 | /* get h/w response queue pointer */ | |
1616 | in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS) | |
1617 | >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; | |
1618 | ||
1619 | while (1) { | |
1620 | u16 status; | |
6c1153e0 | 1621 | unsigned int tag; |
bdd4ddde JG |
1622 | |
1623 | /* get s/w response queue last-read pointer, and compare */ | |
1624 | out_index = pp->resp_idx & MV_MAX_Q_DEPTH_MASK; | |
1625 | if (in_index == out_index) | |
1626 | break; | |
1627 | ||
bdd4ddde | 1628 | /* 50xx: get active ATA command */ |
0ea9e179 | 1629 | if (IS_GEN_I(hpriv)) |
9af5c9c9 | 1630 | tag = ap->link.active_tag; |
bdd4ddde | 1631 | |
6c1153e0 JG |
1632 | /* Gen II/IIE: get active ATA command via tag, to enable |
1633 | * support for queueing. this works transparently for | |
1634 | * queued and non-queued modes. | |
bdd4ddde | 1635 | */ |
8c0aeb4a ML |
1636 | else |
1637 | tag = le16_to_cpu(pp->crpb[out_index].id) & 0x1f; | |
bdd4ddde | 1638 | |
6c1153e0 | 1639 | qc = ata_qc_from_tag(ap, tag); |
bdd4ddde | 1640 | |
cb924419 ML |
1641 | /* For non-NCQ mode, the lower 8 bits of status |
1642 | * are from EDMA_ERR_IRQ_CAUSE_OFS, | |
1643 | * which should be zero if all went well. | |
bdd4ddde JG |
1644 | */ |
1645 | status = le16_to_cpu(pp->crpb[out_index].flags); | |
cb924419 | 1646 | if ((status & 0xff) && !(pp->pp_flags & MV_PP_FLAG_NCQ_EN)) { |
bdd4ddde JG |
1647 | mv_err_intr(ap, qc); |
1648 | return; | |
1649 | } | |
1650 | ||
1651 | /* and finally, complete the ATA command */ | |
1652 | if (qc) { | |
1653 | qc->err_mask |= | |
1654 | ac_err_mask(status >> CRPB_FLAG_STATUS_SHIFT); | |
1655 | ata_qc_complete(qc); | |
1656 | } | |
1657 | ||
0ea9e179 | 1658 | /* advance software response queue pointer, to |
bdd4ddde JG |
1659 | * indicate (after the loop completes) to hardware |
1660 | * that we have consumed a response queue entry. | |
1661 | */ | |
1662 | work_done = true; | |
1663 | pp->resp_idx++; | |
1664 | } | |
1665 | ||
1666 | if (work_done) | |
1667 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | | |
1668 | (out_index << EDMA_RSP_Q_PTR_SHIFT), | |
1669 | port_mmio + EDMA_RSP_Q_OUT_PTR_OFS); | |
20f733e7 BR |
1670 | } |
1671 | ||
05b308e1 BR |
1672 | /** |
1673 | * mv_host_intr - Handle all interrupts on the given host controller | |
cca3974e | 1674 | * @host: host specific structure |
05b308e1 BR |
1675 | * @relevant: port error bits relevant to this host controller |
1676 | * @hc: which host controller we're to look at | |
1677 | * | |
1678 | * Read then write clear the HC interrupt status then walk each | |
1679 | * port connected to the HC and see if it needs servicing. Port | |
1680 | * success ints are reported in the HC interrupt status reg, the | |
1681 | * port error ints are reported in the higher level main | |
1682 | * interrupt status register and thus are passed in via the | |
1683 | * 'relevant' argument. | |
1684 | * | |
1685 | * LOCKING: | |
1686 | * Inherited from caller. | |
1687 | */ | |
cca3974e | 1688 | static void mv_host_intr(struct ata_host *host, u32 relevant, unsigned int hc) |
20f733e7 | 1689 | { |
f351b2d6 SB |
1690 | struct mv_host_priv *hpriv = host->private_data; |
1691 | void __iomem *mmio = hpriv->base; | |
20f733e7 | 1692 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
20f733e7 | 1693 | u32 hc_irq_cause; |
f351b2d6 | 1694 | int port, port0, last_port; |
20f733e7 | 1695 | |
35177265 | 1696 | if (hc == 0) |
20f733e7 | 1697 | port0 = 0; |
35177265 | 1698 | else |
20f733e7 | 1699 | port0 = MV_PORTS_PER_HC; |
20f733e7 | 1700 | |
f351b2d6 SB |
1701 | if (HAS_PCI(host)) |
1702 | last_port = port0 + MV_PORTS_PER_HC; | |
1703 | else | |
1704 | last_port = port0 + hpriv->n_ports; | |
20f733e7 BR |
1705 | /* we'll need the HC success int register in most cases */ |
1706 | hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS); | |
bdd4ddde JG |
1707 | if (!hc_irq_cause) |
1708 | return; | |
1709 | ||
1710 | writelfl(~hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS); | |
20f733e7 BR |
1711 | |
1712 | VPRINTK("ENTER, hc%u relevant=0x%08x HC IRQ cause=0x%08x\n", | |
2dcb407e | 1713 | hc, relevant, hc_irq_cause); |
20f733e7 | 1714 | |
8f71efe2 | 1715 | for (port = port0; port < last_port; port++) { |
cca3974e | 1716 | struct ata_port *ap = host->ports[port]; |
8f71efe2 | 1717 | struct mv_port_priv *pp; |
bdd4ddde | 1718 | int have_err_bits, hard_port, shift; |
55d8ca4f | 1719 | |
bdd4ddde | 1720 | if ((!ap) || (ap->flags & ATA_FLAG_DISABLED)) |
a2c91a88 JG |
1721 | continue; |
1722 | ||
8f71efe2 YL |
1723 | pp = ap->private_data; |
1724 | ||
31961943 | 1725 | shift = port << 1; /* (port * 2) */ |
20f733e7 BR |
1726 | if (port >= MV_PORTS_PER_HC) { |
1727 | shift++; /* skip bit 8 in the HC Main IRQ reg */ | |
1728 | } | |
bdd4ddde JG |
1729 | have_err_bits = ((PORT0_ERR << shift) & relevant); |
1730 | ||
1731 | if (unlikely(have_err_bits)) { | |
1732 | struct ata_queued_cmd *qc; | |
8b260248 | 1733 | |
9af5c9c9 | 1734 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
bdd4ddde JG |
1735 | if (qc && (qc->tf.flags & ATA_TFLAG_POLLING)) |
1736 | continue; | |
1737 | ||
1738 | mv_err_intr(ap, qc); | |
1739 | continue; | |
1740 | } | |
1741 | ||
1742 | hard_port = mv_hardport_from_port(port); /* range 0..3 */ | |
1743 | ||
1744 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { | |
1745 | if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause) | |
1746 | mv_intr_edma(ap); | |
1747 | } else { | |
1748 | if ((DEV_IRQ << hard_port) & hc_irq_cause) | |
1749 | mv_intr_pio(ap); | |
20f733e7 BR |
1750 | } |
1751 | } | |
1752 | VPRINTK("EXIT\n"); | |
1753 | } | |
1754 | ||
bdd4ddde JG |
1755 | static void mv_pci_error(struct ata_host *host, void __iomem *mmio) |
1756 | { | |
02a121da | 1757 | struct mv_host_priv *hpriv = host->private_data; |
bdd4ddde JG |
1758 | struct ata_port *ap; |
1759 | struct ata_queued_cmd *qc; | |
1760 | struct ata_eh_info *ehi; | |
1761 | unsigned int i, err_mask, printed = 0; | |
1762 | u32 err_cause; | |
1763 | ||
02a121da | 1764 | err_cause = readl(mmio + hpriv->irq_cause_ofs); |
bdd4ddde JG |
1765 | |
1766 | dev_printk(KERN_ERR, host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n", | |
1767 | err_cause); | |
1768 | ||
1769 | DPRINTK("All regs @ PCI error\n"); | |
1770 | mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev)); | |
1771 | ||
02a121da | 1772 | writelfl(0, mmio + hpriv->irq_cause_ofs); |
bdd4ddde JG |
1773 | |
1774 | for (i = 0; i < host->n_ports; i++) { | |
1775 | ap = host->ports[i]; | |
936fd732 | 1776 | if (!ata_link_offline(&ap->link)) { |
9af5c9c9 | 1777 | ehi = &ap->link.eh_info; |
bdd4ddde JG |
1778 | ata_ehi_clear_desc(ehi); |
1779 | if (!printed++) | |
1780 | ata_ehi_push_desc(ehi, | |
1781 | "PCI err cause 0x%08x", err_cause); | |
1782 | err_mask = AC_ERR_HOST_BUS; | |
1783 | ehi->action = ATA_EH_HARDRESET; | |
9af5c9c9 | 1784 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
bdd4ddde JG |
1785 | if (qc) |
1786 | qc->err_mask |= err_mask; | |
1787 | else | |
1788 | ehi->err_mask |= err_mask; | |
1789 | ||
1790 | ata_port_freeze(ap); | |
1791 | } | |
1792 | } | |
1793 | } | |
1794 | ||
05b308e1 | 1795 | /** |
c5d3e45a | 1796 | * mv_interrupt - Main interrupt event handler |
05b308e1 BR |
1797 | * @irq: unused |
1798 | * @dev_instance: private data; in this case the host structure | |
05b308e1 BR |
1799 | * |
1800 | * Read the read only register to determine if any host | |
1801 | * controllers have pending interrupts. If so, call lower level | |
1802 | * routine to handle. Also check for PCI errors which are only | |
1803 | * reported here. | |
1804 | * | |
8b260248 | 1805 | * LOCKING: |
cca3974e | 1806 | * This routine holds the host lock while processing pending |
05b308e1 BR |
1807 | * interrupts. |
1808 | */ | |
7d12e780 | 1809 | static irqreturn_t mv_interrupt(int irq, void *dev_instance) |
20f733e7 | 1810 | { |
cca3974e | 1811 | struct ata_host *host = dev_instance; |
f351b2d6 | 1812 | struct mv_host_priv *hpriv = host->private_data; |
20f733e7 | 1813 | unsigned int hc, handled = 0, n_hcs; |
f351b2d6 | 1814 | void __iomem *mmio = hpriv->base; |
646a4da5 | 1815 | u32 irq_stat, irq_mask; |
20f733e7 | 1816 | |
646a4da5 | 1817 | spin_lock(&host->lock); |
f351b2d6 SB |
1818 | |
1819 | irq_stat = readl(hpriv->main_cause_reg_addr); | |
1820 | irq_mask = readl(hpriv->main_mask_reg_addr); | |
20f733e7 BR |
1821 | |
1822 | /* check the cases where we either have nothing pending or have read | |
1823 | * a bogus register value which can indicate HW removal or PCI fault | |
1824 | */ | |
646a4da5 ML |
1825 | if (!(irq_stat & irq_mask) || (0xffffffffU == irq_stat)) |
1826 | goto out_unlock; | |
20f733e7 | 1827 | |
cca3974e | 1828 | n_hcs = mv_get_hc_count(host->ports[0]->flags); |
20f733e7 | 1829 | |
7bb3c529 | 1830 | if (unlikely((irq_stat & PCI_ERR) && HAS_PCI(host))) { |
bdd4ddde JG |
1831 | mv_pci_error(host, mmio); |
1832 | handled = 1; | |
1833 | goto out_unlock; /* skip all other HC irq handling */ | |
1834 | } | |
1835 | ||
20f733e7 BR |
1836 | for (hc = 0; hc < n_hcs; hc++) { |
1837 | u32 relevant = irq_stat & (HC0_IRQ_PEND << (hc * HC_SHIFT)); | |
1838 | if (relevant) { | |
cca3974e | 1839 | mv_host_intr(host, relevant, hc); |
bdd4ddde | 1840 | handled = 1; |
20f733e7 BR |
1841 | } |
1842 | } | |
615ab953 | 1843 | |
bdd4ddde | 1844 | out_unlock: |
cca3974e | 1845 | spin_unlock(&host->lock); |
20f733e7 BR |
1846 | |
1847 | return IRQ_RETVAL(handled); | |
1848 | } | |
1849 | ||
c9d39130 JG |
1850 | static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port) |
1851 | { | |
1852 | void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port); | |
1853 | unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL; | |
1854 | ||
1855 | return hc_mmio + ofs; | |
1856 | } | |
1857 | ||
1858 | static unsigned int mv5_scr_offset(unsigned int sc_reg_in) | |
1859 | { | |
1860 | unsigned int ofs; | |
1861 | ||
1862 | switch (sc_reg_in) { | |
1863 | case SCR_STATUS: | |
1864 | case SCR_ERROR: | |
1865 | case SCR_CONTROL: | |
1866 | ofs = sc_reg_in * sizeof(u32); | |
1867 | break; | |
1868 | default: | |
1869 | ofs = 0xffffffffU; | |
1870 | break; | |
1871 | } | |
1872 | return ofs; | |
1873 | } | |
1874 | ||
da3dbb17 | 1875 | static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val) |
c9d39130 | 1876 | { |
f351b2d6 SB |
1877 | struct mv_host_priv *hpriv = ap->host->private_data; |
1878 | void __iomem *mmio = hpriv->base; | |
0d5ff566 | 1879 | void __iomem *addr = mv5_phy_base(mmio, ap->port_no); |
c9d39130 JG |
1880 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
1881 | ||
da3dbb17 TH |
1882 | if (ofs != 0xffffffffU) { |
1883 | *val = readl(addr + ofs); | |
1884 | return 0; | |
1885 | } else | |
1886 | return -EINVAL; | |
c9d39130 JG |
1887 | } |
1888 | ||
da3dbb17 | 1889 | static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val) |
c9d39130 | 1890 | { |
f351b2d6 SB |
1891 | struct mv_host_priv *hpriv = ap->host->private_data; |
1892 | void __iomem *mmio = hpriv->base; | |
0d5ff566 | 1893 | void __iomem *addr = mv5_phy_base(mmio, ap->port_no); |
c9d39130 JG |
1894 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
1895 | ||
da3dbb17 | 1896 | if (ofs != 0xffffffffU) { |
0d5ff566 | 1897 | writelfl(val, addr + ofs); |
da3dbb17 TH |
1898 | return 0; |
1899 | } else | |
1900 | return -EINVAL; | |
c9d39130 JG |
1901 | } |
1902 | ||
7bb3c529 | 1903 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio) |
522479fb | 1904 | { |
7bb3c529 | 1905 | struct pci_dev *pdev = to_pci_dev(host->dev); |
522479fb JG |
1906 | int early_5080; |
1907 | ||
44c10138 | 1908 | early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0); |
522479fb JG |
1909 | |
1910 | if (!early_5080) { | |
1911 | u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
1912 | tmp |= (1 << 0); | |
1913 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
1914 | } | |
1915 | ||
7bb3c529 | 1916 | mv_reset_pci_bus(host, mmio); |
522479fb JG |
1917 | } |
1918 | ||
1919 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) | |
1920 | { | |
1921 | writel(0x0fcfffff, mmio + MV_FLASH_CTL); | |
1922 | } | |
1923 | ||
47c2b677 | 1924 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, |
ba3fe8fb JG |
1925 | void __iomem *mmio) |
1926 | { | |
c9d39130 JG |
1927 | void __iomem *phy_mmio = mv5_phy_base(mmio, idx); |
1928 | u32 tmp; | |
1929 | ||
1930 | tmp = readl(phy_mmio + MV5_PHY_MODE); | |
1931 | ||
1932 | hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */ | |
1933 | hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */ | |
ba3fe8fb JG |
1934 | } |
1935 | ||
47c2b677 | 1936 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) |
ba3fe8fb | 1937 | { |
522479fb JG |
1938 | u32 tmp; |
1939 | ||
1940 | writel(0, mmio + MV_GPIO_PORT_CTL); | |
1941 | ||
1942 | /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */ | |
1943 | ||
1944 | tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
1945 | tmp |= ~(1 << 0); | |
1946 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
ba3fe8fb JG |
1947 | } |
1948 | ||
2a47ce06 JG |
1949 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
1950 | unsigned int port) | |
bca1c4eb | 1951 | { |
c9d39130 JG |
1952 | void __iomem *phy_mmio = mv5_phy_base(mmio, port); |
1953 | const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5); | |
1954 | u32 tmp; | |
1955 | int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0); | |
1956 | ||
1957 | if (fix_apm_sq) { | |
1958 | tmp = readl(phy_mmio + MV5_LT_MODE); | |
1959 | tmp |= (1 << 19); | |
1960 | writel(tmp, phy_mmio + MV5_LT_MODE); | |
1961 | ||
1962 | tmp = readl(phy_mmio + MV5_PHY_CTL); | |
1963 | tmp &= ~0x3; | |
1964 | tmp |= 0x1; | |
1965 | writel(tmp, phy_mmio + MV5_PHY_CTL); | |
1966 | } | |
1967 | ||
1968 | tmp = readl(phy_mmio + MV5_PHY_MODE); | |
1969 | tmp &= ~mask; | |
1970 | tmp |= hpriv->signal[port].pre; | |
1971 | tmp |= hpriv->signal[port].amps; | |
1972 | writel(tmp, phy_mmio + MV5_PHY_MODE); | |
bca1c4eb JG |
1973 | } |
1974 | ||
c9d39130 JG |
1975 | |
1976 | #undef ZERO | |
1977 | #define ZERO(reg) writel(0, port_mmio + (reg)) | |
1978 | static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio, | |
1979 | unsigned int port) | |
1980 | { | |
1981 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
1982 | ||
1983 | writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS); | |
1984 | ||
1985 | mv_channel_reset(hpriv, mmio, port); | |
1986 | ||
1987 | ZERO(0x028); /* command */ | |
1988 | writel(0x11f, port_mmio + EDMA_CFG_OFS); | |
1989 | ZERO(0x004); /* timer */ | |
1990 | ZERO(0x008); /* irq err cause */ | |
1991 | ZERO(0x00c); /* irq err mask */ | |
1992 | ZERO(0x010); /* rq bah */ | |
1993 | ZERO(0x014); /* rq inp */ | |
1994 | ZERO(0x018); /* rq outp */ | |
1995 | ZERO(0x01c); /* respq bah */ | |
1996 | ZERO(0x024); /* respq outp */ | |
1997 | ZERO(0x020); /* respq inp */ | |
1998 | ZERO(0x02c); /* test control */ | |
1999 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT); | |
2000 | } | |
2001 | #undef ZERO | |
2002 | ||
2003 | #define ZERO(reg) writel(0, hc_mmio + (reg)) | |
2004 | static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
2005 | unsigned int hc) | |
47c2b677 | 2006 | { |
c9d39130 JG |
2007 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
2008 | u32 tmp; | |
2009 | ||
2010 | ZERO(0x00c); | |
2011 | ZERO(0x010); | |
2012 | ZERO(0x014); | |
2013 | ZERO(0x018); | |
2014 | ||
2015 | tmp = readl(hc_mmio + 0x20); | |
2016 | tmp &= 0x1c1c1c1c; | |
2017 | tmp |= 0x03030303; | |
2018 | writel(tmp, hc_mmio + 0x20); | |
2019 | } | |
2020 | #undef ZERO | |
2021 | ||
2022 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
2023 | unsigned int n_hc) | |
2024 | { | |
2025 | unsigned int hc, port; | |
2026 | ||
2027 | for (hc = 0; hc < n_hc; hc++) { | |
2028 | for (port = 0; port < MV_PORTS_PER_HC; port++) | |
2029 | mv5_reset_hc_port(hpriv, mmio, | |
2030 | (hc * MV_PORTS_PER_HC) + port); | |
2031 | ||
2032 | mv5_reset_one_hc(hpriv, mmio, hc); | |
2033 | } | |
2034 | ||
2035 | return 0; | |
47c2b677 JG |
2036 | } |
2037 | ||
101ffae2 JG |
2038 | #undef ZERO |
2039 | #define ZERO(reg) writel(0, mmio + (reg)) | |
7bb3c529 | 2040 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio) |
101ffae2 | 2041 | { |
02a121da | 2042 | struct mv_host_priv *hpriv = host->private_data; |
101ffae2 JG |
2043 | u32 tmp; |
2044 | ||
2045 | tmp = readl(mmio + MV_PCI_MODE); | |
2046 | tmp &= 0xff00ffff; | |
2047 | writel(tmp, mmio + MV_PCI_MODE); | |
2048 | ||
2049 | ZERO(MV_PCI_DISC_TIMER); | |
2050 | ZERO(MV_PCI_MSI_TRIGGER); | |
2051 | writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT); | |
2052 | ZERO(HC_MAIN_IRQ_MASK_OFS); | |
2053 | ZERO(MV_PCI_SERR_MASK); | |
02a121da ML |
2054 | ZERO(hpriv->irq_cause_ofs); |
2055 | ZERO(hpriv->irq_mask_ofs); | |
101ffae2 JG |
2056 | ZERO(MV_PCI_ERR_LOW_ADDRESS); |
2057 | ZERO(MV_PCI_ERR_HIGH_ADDRESS); | |
2058 | ZERO(MV_PCI_ERR_ATTRIBUTE); | |
2059 | ZERO(MV_PCI_ERR_COMMAND); | |
2060 | } | |
2061 | #undef ZERO | |
2062 | ||
2063 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) | |
2064 | { | |
2065 | u32 tmp; | |
2066 | ||
2067 | mv5_reset_flash(hpriv, mmio); | |
2068 | ||
2069 | tmp = readl(mmio + MV_GPIO_PORT_CTL); | |
2070 | tmp &= 0x3; | |
2071 | tmp |= (1 << 5) | (1 << 6); | |
2072 | writel(tmp, mmio + MV_GPIO_PORT_CTL); | |
2073 | } | |
2074 | ||
2075 | /** | |
2076 | * mv6_reset_hc - Perform the 6xxx global soft reset | |
2077 | * @mmio: base address of the HBA | |
2078 | * | |
2079 | * This routine only applies to 6xxx parts. | |
2080 | * | |
2081 | * LOCKING: | |
2082 | * Inherited from caller. | |
2083 | */ | |
c9d39130 JG |
2084 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
2085 | unsigned int n_hc) | |
101ffae2 JG |
2086 | { |
2087 | void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS; | |
2088 | int i, rc = 0; | |
2089 | u32 t; | |
2090 | ||
2091 | /* Following procedure defined in PCI "main command and status | |
2092 | * register" table. | |
2093 | */ | |
2094 | t = readl(reg); | |
2095 | writel(t | STOP_PCI_MASTER, reg); | |
2096 | ||
2097 | for (i = 0; i < 1000; i++) { | |
2098 | udelay(1); | |
2099 | t = readl(reg); | |
2dcb407e | 2100 | if (PCI_MASTER_EMPTY & t) |
101ffae2 | 2101 | break; |
101ffae2 JG |
2102 | } |
2103 | if (!(PCI_MASTER_EMPTY & t)) { | |
2104 | printk(KERN_ERR DRV_NAME ": PCI master won't flush\n"); | |
2105 | rc = 1; | |
2106 | goto done; | |
2107 | } | |
2108 | ||
2109 | /* set reset */ | |
2110 | i = 5; | |
2111 | do { | |
2112 | writel(t | GLOB_SFT_RST, reg); | |
2113 | t = readl(reg); | |
2114 | udelay(1); | |
2115 | } while (!(GLOB_SFT_RST & t) && (i-- > 0)); | |
2116 | ||
2117 | if (!(GLOB_SFT_RST & t)) { | |
2118 | printk(KERN_ERR DRV_NAME ": can't set global reset\n"); | |
2119 | rc = 1; | |
2120 | goto done; | |
2121 | } | |
2122 | ||
2123 | /* clear reset and *reenable the PCI master* (not mentioned in spec) */ | |
2124 | i = 5; | |
2125 | do { | |
2126 | writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg); | |
2127 | t = readl(reg); | |
2128 | udelay(1); | |
2129 | } while ((GLOB_SFT_RST & t) && (i-- > 0)); | |
2130 | ||
2131 | if (GLOB_SFT_RST & t) { | |
2132 | printk(KERN_ERR DRV_NAME ": can't clear global reset\n"); | |
2133 | rc = 1; | |
2134 | } | |
2135 | done: | |
2136 | return rc; | |
2137 | } | |
2138 | ||
47c2b677 | 2139 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, |
ba3fe8fb JG |
2140 | void __iomem *mmio) |
2141 | { | |
2142 | void __iomem *port_mmio; | |
2143 | u32 tmp; | |
2144 | ||
ba3fe8fb JG |
2145 | tmp = readl(mmio + MV_RESET_CFG); |
2146 | if ((tmp & (1 << 0)) == 0) { | |
47c2b677 | 2147 | hpriv->signal[idx].amps = 0x7 << 8; |
ba3fe8fb JG |
2148 | hpriv->signal[idx].pre = 0x1 << 5; |
2149 | return; | |
2150 | } | |
2151 | ||
2152 | port_mmio = mv_port_base(mmio, idx); | |
2153 | tmp = readl(port_mmio + PHY_MODE2); | |
2154 | ||
2155 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ | |
2156 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ | |
2157 | } | |
2158 | ||
47c2b677 | 2159 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) |
ba3fe8fb | 2160 | { |
47c2b677 | 2161 | writel(0x00000060, mmio + MV_GPIO_PORT_CTL); |
ba3fe8fb JG |
2162 | } |
2163 | ||
c9d39130 | 2164 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
2a47ce06 | 2165 | unsigned int port) |
bca1c4eb | 2166 | { |
c9d39130 JG |
2167 | void __iomem *port_mmio = mv_port_base(mmio, port); |
2168 | ||
bca1c4eb | 2169 | u32 hp_flags = hpriv->hp_flags; |
47c2b677 JG |
2170 | int fix_phy_mode2 = |
2171 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); | |
bca1c4eb | 2172 | int fix_phy_mode4 = |
47c2b677 JG |
2173 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); |
2174 | u32 m2, tmp; | |
2175 | ||
2176 | if (fix_phy_mode2) { | |
2177 | m2 = readl(port_mmio + PHY_MODE2); | |
2178 | m2 &= ~(1 << 16); | |
2179 | m2 |= (1 << 31); | |
2180 | writel(m2, port_mmio + PHY_MODE2); | |
2181 | ||
2182 | udelay(200); | |
2183 | ||
2184 | m2 = readl(port_mmio + PHY_MODE2); | |
2185 | m2 &= ~((1 << 16) | (1 << 31)); | |
2186 | writel(m2, port_mmio + PHY_MODE2); | |
2187 | ||
2188 | udelay(200); | |
2189 | } | |
2190 | ||
2191 | /* who knows what this magic does */ | |
2192 | tmp = readl(port_mmio + PHY_MODE3); | |
2193 | tmp &= ~0x7F800000; | |
2194 | tmp |= 0x2A800000; | |
2195 | writel(tmp, port_mmio + PHY_MODE3); | |
bca1c4eb JG |
2196 | |
2197 | if (fix_phy_mode4) { | |
47c2b677 | 2198 | u32 m4; |
bca1c4eb JG |
2199 | |
2200 | m4 = readl(port_mmio + PHY_MODE4); | |
47c2b677 JG |
2201 | |
2202 | if (hp_flags & MV_HP_ERRATA_60X1B2) | |
2203 | tmp = readl(port_mmio + 0x310); | |
bca1c4eb JG |
2204 | |
2205 | m4 = (m4 & ~(1 << 1)) | (1 << 0); | |
2206 | ||
2207 | writel(m4, port_mmio + PHY_MODE4); | |
47c2b677 JG |
2208 | |
2209 | if (hp_flags & MV_HP_ERRATA_60X1B2) | |
2210 | writel(tmp, port_mmio + 0x310); | |
bca1c4eb JG |
2211 | } |
2212 | ||
2213 | /* Revert values of pre-emphasis and signal amps to the saved ones */ | |
2214 | m2 = readl(port_mmio + PHY_MODE2); | |
2215 | ||
2216 | m2 &= ~MV_M2_PREAMP_MASK; | |
2a47ce06 JG |
2217 | m2 |= hpriv->signal[port].amps; |
2218 | m2 |= hpriv->signal[port].pre; | |
47c2b677 | 2219 | m2 &= ~(1 << 16); |
bca1c4eb | 2220 | |
e4e7b892 JG |
2221 | /* according to mvSata 3.6.1, some IIE values are fixed */ |
2222 | if (IS_GEN_IIE(hpriv)) { | |
2223 | m2 &= ~0xC30FF01F; | |
2224 | m2 |= 0x0000900F; | |
2225 | } | |
2226 | ||
bca1c4eb JG |
2227 | writel(m2, port_mmio + PHY_MODE2); |
2228 | } | |
2229 | ||
f351b2d6 SB |
2230 | /* TODO: use the generic LED interface to configure the SATA Presence */ |
2231 | /* & Acitivy LEDs on the board */ | |
2232 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, | |
2233 | void __iomem *mmio) | |
2234 | { | |
2235 | return; | |
2236 | } | |
2237 | ||
2238 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, | |
2239 | void __iomem *mmio) | |
2240 | { | |
2241 | void __iomem *port_mmio; | |
2242 | u32 tmp; | |
2243 | ||
2244 | port_mmio = mv_port_base(mmio, idx); | |
2245 | tmp = readl(port_mmio + PHY_MODE2); | |
2246 | ||
2247 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ | |
2248 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ | |
2249 | } | |
2250 | ||
2251 | #undef ZERO | |
2252 | #define ZERO(reg) writel(0, port_mmio + (reg)) | |
2253 | static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv, | |
2254 | void __iomem *mmio, unsigned int port) | |
2255 | { | |
2256 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
2257 | ||
2258 | writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS); | |
2259 | ||
2260 | mv_channel_reset(hpriv, mmio, port); | |
2261 | ||
2262 | ZERO(0x028); /* command */ | |
2263 | writel(0x101f, port_mmio + EDMA_CFG_OFS); | |
2264 | ZERO(0x004); /* timer */ | |
2265 | ZERO(0x008); /* irq err cause */ | |
2266 | ZERO(0x00c); /* irq err mask */ | |
2267 | ZERO(0x010); /* rq bah */ | |
2268 | ZERO(0x014); /* rq inp */ | |
2269 | ZERO(0x018); /* rq outp */ | |
2270 | ZERO(0x01c); /* respq bah */ | |
2271 | ZERO(0x024); /* respq outp */ | |
2272 | ZERO(0x020); /* respq inp */ | |
2273 | ZERO(0x02c); /* test control */ | |
2274 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT); | |
2275 | } | |
2276 | ||
2277 | #undef ZERO | |
2278 | ||
2279 | #define ZERO(reg) writel(0, hc_mmio + (reg)) | |
2280 | static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv, | |
2281 | void __iomem *mmio) | |
2282 | { | |
2283 | void __iomem *hc_mmio = mv_hc_base(mmio, 0); | |
2284 | ||
2285 | ZERO(0x00c); | |
2286 | ZERO(0x010); | |
2287 | ZERO(0x014); | |
2288 | ||
2289 | } | |
2290 | ||
2291 | #undef ZERO | |
2292 | ||
2293 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, | |
2294 | void __iomem *mmio, unsigned int n_hc) | |
2295 | { | |
2296 | unsigned int port; | |
2297 | ||
2298 | for (port = 0; port < hpriv->n_ports; port++) | |
2299 | mv_soc_reset_hc_port(hpriv, mmio, port); | |
2300 | ||
2301 | mv_soc_reset_one_hc(hpriv, mmio); | |
2302 | ||
2303 | return 0; | |
2304 | } | |
2305 | ||
2306 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, | |
2307 | void __iomem *mmio) | |
2308 | { | |
2309 | return; | |
2310 | } | |
2311 | ||
2312 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio) | |
2313 | { | |
2314 | return; | |
2315 | } | |
2316 | ||
c9d39130 JG |
2317 | static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio, |
2318 | unsigned int port_no) | |
2319 | { | |
2320 | void __iomem *port_mmio = mv_port_base(mmio, port_no); | |
2321 | ||
2322 | writelfl(ATA_RST, port_mmio + EDMA_CMD_OFS); | |
2323 | ||
ee9ccdf7 | 2324 | if (IS_GEN_II(hpriv)) { |
c9d39130 | 2325 | u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL); |
eb46d684 ML |
2326 | ifctl |= (1 << 7); /* enable gen2i speed */ |
2327 | ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */ | |
c9d39130 JG |
2328 | writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL); |
2329 | } | |
2330 | ||
2331 | udelay(25); /* allow reset propagation */ | |
2332 | ||
2333 | /* Spec never mentions clearing the bit. Marvell's driver does | |
2334 | * clear the bit, however. | |
2335 | */ | |
2336 | writelfl(0, port_mmio + EDMA_CMD_OFS); | |
2337 | ||
2338 | hpriv->ops->phy_errata(hpriv, mmio, port_no); | |
2339 | ||
ee9ccdf7 | 2340 | if (IS_GEN_I(hpriv)) |
c9d39130 JG |
2341 | mdelay(1); |
2342 | } | |
2343 | ||
05b308e1 | 2344 | /** |
bdd4ddde | 2345 | * mv_phy_reset - Perform eDMA reset followed by COMRESET |
05b308e1 BR |
2346 | * @ap: ATA channel to manipulate |
2347 | * | |
2348 | * Part of this is taken from __sata_phy_reset and modified to | |
2349 | * not sleep since this routine gets called from interrupt level. | |
2350 | * | |
2351 | * LOCKING: | |
2352 | * Inherited from caller. This is coded to safe to call at | |
2353 | * interrupt level, i.e. it does not sleep. | |
31961943 | 2354 | */ |
bdd4ddde JG |
2355 | static void mv_phy_reset(struct ata_port *ap, unsigned int *class, |
2356 | unsigned long deadline) | |
20f733e7 | 2357 | { |
095fec88 | 2358 | struct mv_port_priv *pp = ap->private_data; |
cca3974e | 2359 | struct mv_host_priv *hpriv = ap->host->private_data; |
20f733e7 | 2360 | void __iomem *port_mmio = mv_ap_base(ap); |
22374677 JG |
2361 | int retry = 5; |
2362 | u32 sstatus; | |
20f733e7 BR |
2363 | |
2364 | VPRINTK("ENTER, port %u, mmio 0x%p\n", ap->port_no, port_mmio); | |
2365 | ||
da3dbb17 TH |
2366 | #ifdef DEBUG |
2367 | { | |
2368 | u32 sstatus, serror, scontrol; | |
2369 | ||
2370 | mv_scr_read(ap, SCR_STATUS, &sstatus); | |
2371 | mv_scr_read(ap, SCR_ERROR, &serror); | |
2372 | mv_scr_read(ap, SCR_CONTROL, &scontrol); | |
2373 | DPRINTK("S-regs after ATA_RST: SStat 0x%08x SErr 0x%08x " | |
2d79ab8f | 2374 | "SCtrl 0x%08x\n", sstatus, serror, scontrol); |
da3dbb17 TH |
2375 | } |
2376 | #endif | |
20f733e7 | 2377 | |
22374677 JG |
2378 | /* Issue COMRESET via SControl */ |
2379 | comreset_retry: | |
936fd732 | 2380 | sata_scr_write_flush(&ap->link, SCR_CONTROL, 0x301); |
bdd4ddde | 2381 | msleep(1); |
22374677 | 2382 | |
936fd732 | 2383 | sata_scr_write_flush(&ap->link, SCR_CONTROL, 0x300); |
bdd4ddde | 2384 | msleep(20); |
22374677 | 2385 | |
31961943 | 2386 | do { |
936fd732 | 2387 | sata_scr_read(&ap->link, SCR_STATUS, &sstatus); |
62f1d0e6 | 2388 | if (((sstatus & 0x3) == 3) || ((sstatus & 0x3) == 0)) |
31961943 | 2389 | break; |
22374677 | 2390 | |
bdd4ddde | 2391 | msleep(1); |
c5d3e45a | 2392 | } while (time_before(jiffies, deadline)); |
20f733e7 | 2393 | |
22374677 | 2394 | /* work around errata */ |
ee9ccdf7 | 2395 | if (IS_GEN_II(hpriv) && |
22374677 JG |
2396 | (sstatus != 0x0) && (sstatus != 0x113) && (sstatus != 0x123) && |
2397 | (retry-- > 0)) | |
2398 | goto comreset_retry; | |
095fec88 | 2399 | |
da3dbb17 TH |
2400 | #ifdef DEBUG |
2401 | { | |
2402 | u32 sstatus, serror, scontrol; | |
2403 | ||
2404 | mv_scr_read(ap, SCR_STATUS, &sstatus); | |
2405 | mv_scr_read(ap, SCR_ERROR, &serror); | |
2406 | mv_scr_read(ap, SCR_CONTROL, &scontrol); | |
2407 | DPRINTK("S-regs after PHY wake: SStat 0x%08x SErr 0x%08x " | |
2408 | "SCtrl 0x%08x\n", sstatus, serror, scontrol); | |
2409 | } | |
2410 | #endif | |
31961943 | 2411 | |
936fd732 | 2412 | if (ata_link_offline(&ap->link)) { |
bdd4ddde | 2413 | *class = ATA_DEV_NONE; |
20f733e7 BR |
2414 | return; |
2415 | } | |
2416 | ||
22374677 JG |
2417 | /* even after SStatus reflects that device is ready, |
2418 | * it seems to take a while for link to be fully | |
2419 | * established (and thus Status no longer 0x80/0x7F), | |
2420 | * so we poll a bit for that, here. | |
2421 | */ | |
2422 | retry = 20; | |
2423 | while (1) { | |
2424 | u8 drv_stat = ata_check_status(ap); | |
2425 | if ((drv_stat != 0x80) && (drv_stat != 0x7f)) | |
2426 | break; | |
bdd4ddde | 2427 | msleep(500); |
22374677 JG |
2428 | if (retry-- <= 0) |
2429 | break; | |
bdd4ddde JG |
2430 | if (time_after(jiffies, deadline)) |
2431 | break; | |
22374677 JG |
2432 | } |
2433 | ||
bdd4ddde JG |
2434 | /* FIXME: if we passed the deadline, the following |
2435 | * code probably produces an invalid result | |
2436 | */ | |
20f733e7 | 2437 | |
bdd4ddde | 2438 | /* finally, read device signature from TF registers */ |
3f19859e | 2439 | *class = ata_dev_try_classify(ap->link.device, 1, NULL); |
095fec88 JG |
2440 | |
2441 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); | |
2442 | ||
bdd4ddde | 2443 | WARN_ON(pp->pp_flags & MV_PP_FLAG_EDMA_EN); |
095fec88 | 2444 | |
bca1c4eb | 2445 | VPRINTK("EXIT\n"); |
20f733e7 BR |
2446 | } |
2447 | ||
cc0680a5 | 2448 | static int mv_prereset(struct ata_link *link, unsigned long deadline) |
22374677 | 2449 | { |
cc0680a5 | 2450 | struct ata_port *ap = link->ap; |
bdd4ddde | 2451 | struct mv_port_priv *pp = ap->private_data; |
cc0680a5 | 2452 | struct ata_eh_context *ehc = &link->eh_context; |
bdd4ddde | 2453 | int rc; |
0ea9e179 | 2454 | |
bdd4ddde JG |
2455 | rc = mv_stop_dma(ap); |
2456 | if (rc) | |
2457 | ehc->i.action |= ATA_EH_HARDRESET; | |
2458 | ||
2459 | if (!(pp->pp_flags & MV_PP_FLAG_HAD_A_RESET)) { | |
2460 | pp->pp_flags |= MV_PP_FLAG_HAD_A_RESET; | |
2461 | ehc->i.action |= ATA_EH_HARDRESET; | |
2462 | } | |
2463 | ||
2464 | /* if we're about to do hardreset, nothing more to do */ | |
2465 | if (ehc->i.action & ATA_EH_HARDRESET) | |
2466 | return 0; | |
2467 | ||
cc0680a5 | 2468 | if (ata_link_online(link)) |
bdd4ddde JG |
2469 | rc = ata_wait_ready(ap, deadline); |
2470 | else | |
2471 | rc = -ENODEV; | |
2472 | ||
2473 | return rc; | |
22374677 JG |
2474 | } |
2475 | ||
cc0680a5 | 2476 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
bdd4ddde | 2477 | unsigned long deadline) |
31961943 | 2478 | { |
cc0680a5 | 2479 | struct ata_port *ap = link->ap; |
bdd4ddde | 2480 | struct mv_host_priv *hpriv = ap->host->private_data; |
f351b2d6 | 2481 | void __iomem *mmio = hpriv->base; |
31961943 | 2482 | |
bdd4ddde | 2483 | mv_stop_dma(ap); |
31961943 | 2484 | |
bdd4ddde | 2485 | mv_channel_reset(hpriv, mmio, ap->port_no); |
31961943 | 2486 | |
bdd4ddde JG |
2487 | mv_phy_reset(ap, class, deadline); |
2488 | ||
2489 | return 0; | |
2490 | } | |
2491 | ||
cc0680a5 | 2492 | static void mv_postreset(struct ata_link *link, unsigned int *classes) |
bdd4ddde | 2493 | { |
cc0680a5 | 2494 | struct ata_port *ap = link->ap; |
bdd4ddde JG |
2495 | u32 serr; |
2496 | ||
2497 | /* print link status */ | |
cc0680a5 | 2498 | sata_print_link_status(link); |
31961943 | 2499 | |
bdd4ddde | 2500 | /* clear SError */ |
cc0680a5 TH |
2501 | sata_scr_read(link, SCR_ERROR, &serr); |
2502 | sata_scr_write_flush(link, SCR_ERROR, serr); | |
bdd4ddde JG |
2503 | |
2504 | /* bail out if no device is present */ | |
2505 | if (classes[0] == ATA_DEV_NONE && classes[1] == ATA_DEV_NONE) { | |
2506 | DPRINTK("EXIT, no device\n"); | |
2507 | return; | |
9b358e30 | 2508 | } |
bdd4ddde JG |
2509 | |
2510 | /* set up device control */ | |
2511 | iowrite8(ap->ctl, ap->ioaddr.ctl_addr); | |
2512 | } | |
2513 | ||
2514 | static void mv_error_handler(struct ata_port *ap) | |
2515 | { | |
2516 | ata_do_eh(ap, mv_prereset, ata_std_softreset, | |
2517 | mv_hardreset, mv_postreset); | |
2518 | } | |
2519 | ||
bdd4ddde JG |
2520 | static void mv_eh_freeze(struct ata_port *ap) |
2521 | { | |
f351b2d6 | 2522 | struct mv_host_priv *hpriv = ap->host->private_data; |
bdd4ddde JG |
2523 | unsigned int hc = (ap->port_no > 3) ? 1 : 0; |
2524 | u32 tmp, mask; | |
2525 | unsigned int shift; | |
2526 | ||
2527 | /* FIXME: handle coalescing completion events properly */ | |
2528 | ||
2529 | shift = ap->port_no * 2; | |
2530 | if (hc > 0) | |
2531 | shift++; | |
2532 | ||
2533 | mask = 0x3 << shift; | |
2534 | ||
2535 | /* disable assertion of portN err, done events */ | |
f351b2d6 SB |
2536 | tmp = readl(hpriv->main_mask_reg_addr); |
2537 | writelfl(tmp & ~mask, hpriv->main_mask_reg_addr); | |
bdd4ddde JG |
2538 | } |
2539 | ||
2540 | static void mv_eh_thaw(struct ata_port *ap) | |
2541 | { | |
f351b2d6 SB |
2542 | struct mv_host_priv *hpriv = ap->host->private_data; |
2543 | void __iomem *mmio = hpriv->base; | |
bdd4ddde JG |
2544 | unsigned int hc = (ap->port_no > 3) ? 1 : 0; |
2545 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); | |
2546 | void __iomem *port_mmio = mv_ap_base(ap); | |
2547 | u32 tmp, mask, hc_irq_cause; | |
2548 | unsigned int shift, hc_port_no = ap->port_no; | |
2549 | ||
2550 | /* FIXME: handle coalescing completion events properly */ | |
2551 | ||
2552 | shift = ap->port_no * 2; | |
2553 | if (hc > 0) { | |
2554 | shift++; | |
2555 | hc_port_no -= 4; | |
2556 | } | |
2557 | ||
2558 | mask = 0x3 << shift; | |
2559 | ||
2560 | /* clear EDMA errors on this port */ | |
2561 | writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); | |
2562 | ||
2563 | /* clear pending irq events */ | |
2564 | hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS); | |
2565 | hc_irq_cause &= ~(1 << hc_port_no); /* clear CRPB-done */ | |
2566 | hc_irq_cause &= ~(1 << (hc_port_no + 8)); /* clear Device int */ | |
2567 | writel(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS); | |
2568 | ||
2569 | /* enable assertion of portN err, done events */ | |
f351b2d6 SB |
2570 | tmp = readl(hpriv->main_mask_reg_addr); |
2571 | writelfl(tmp | mask, hpriv->main_mask_reg_addr); | |
31961943 BR |
2572 | } |
2573 | ||
05b308e1 BR |
2574 | /** |
2575 | * mv_port_init - Perform some early initialization on a single port. | |
2576 | * @port: libata data structure storing shadow register addresses | |
2577 | * @port_mmio: base address of the port | |
2578 | * | |
2579 | * Initialize shadow register mmio addresses, clear outstanding | |
2580 | * interrupts on the port, and unmask interrupts for the future | |
2581 | * start of the port. | |
2582 | * | |
2583 | * LOCKING: | |
2584 | * Inherited from caller. | |
2585 | */ | |
31961943 | 2586 | static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio) |
20f733e7 | 2587 | { |
0d5ff566 | 2588 | void __iomem *shd_base = port_mmio + SHD_BLK_OFS; |
31961943 BR |
2589 | unsigned serr_ofs; |
2590 | ||
8b260248 | 2591 | /* PIO related setup |
31961943 BR |
2592 | */ |
2593 | port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA); | |
8b260248 | 2594 | port->error_addr = |
31961943 BR |
2595 | port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR); |
2596 | port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT); | |
2597 | port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL); | |
2598 | port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM); | |
2599 | port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH); | |
2600 | port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE); | |
8b260248 | 2601 | port->status_addr = |
31961943 BR |
2602 | port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS); |
2603 | /* special case: control/altstatus doesn't have ATA_REG_ address */ | |
2604 | port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS; | |
2605 | ||
2606 | /* unused: */ | |
8d9db2d2 | 2607 | port->cmd_addr = port->bmdma_addr = port->scr_addr = NULL; |
20f733e7 | 2608 | |
31961943 BR |
2609 | /* Clear any currently outstanding port interrupt conditions */ |
2610 | serr_ofs = mv_scr_offset(SCR_ERROR); | |
2611 | writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs); | |
2612 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); | |
2613 | ||
646a4da5 ML |
2614 | /* unmask all non-transient EDMA error interrupts */ |
2615 | writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK_OFS); | |
20f733e7 | 2616 | |
8b260248 | 2617 | VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n", |
31961943 BR |
2618 | readl(port_mmio + EDMA_CFG_OFS), |
2619 | readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS), | |
2620 | readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS)); | |
20f733e7 BR |
2621 | } |
2622 | ||
4447d351 | 2623 | static int mv_chip_id(struct ata_host *host, unsigned int board_idx) |
bca1c4eb | 2624 | { |
4447d351 TH |
2625 | struct pci_dev *pdev = to_pci_dev(host->dev); |
2626 | struct mv_host_priv *hpriv = host->private_data; | |
bca1c4eb JG |
2627 | u32 hp_flags = hpriv->hp_flags; |
2628 | ||
5796d1c4 | 2629 | switch (board_idx) { |
47c2b677 JG |
2630 | case chip_5080: |
2631 | hpriv->ops = &mv5xxx_ops; | |
ee9ccdf7 | 2632 | hp_flags |= MV_HP_GEN_I; |
47c2b677 | 2633 | |
44c10138 | 2634 | switch (pdev->revision) { |
47c2b677 JG |
2635 | case 0x1: |
2636 | hp_flags |= MV_HP_ERRATA_50XXB0; | |
2637 | break; | |
2638 | case 0x3: | |
2639 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
2640 | break; | |
2641 | default: | |
2642 | dev_printk(KERN_WARNING, &pdev->dev, | |
2643 | "Applying 50XXB2 workarounds to unknown rev\n"); | |
2644 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
2645 | break; | |
2646 | } | |
2647 | break; | |
2648 | ||
bca1c4eb JG |
2649 | case chip_504x: |
2650 | case chip_508x: | |
47c2b677 | 2651 | hpriv->ops = &mv5xxx_ops; |
ee9ccdf7 | 2652 | hp_flags |= MV_HP_GEN_I; |
bca1c4eb | 2653 | |
44c10138 | 2654 | switch (pdev->revision) { |
47c2b677 JG |
2655 | case 0x0: |
2656 | hp_flags |= MV_HP_ERRATA_50XXB0; | |
2657 | break; | |
2658 | case 0x3: | |
2659 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
2660 | break; | |
2661 | default: | |
2662 | dev_printk(KERN_WARNING, &pdev->dev, | |
2663 | "Applying B2 workarounds to unknown rev\n"); | |
2664 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
2665 | break; | |
bca1c4eb JG |
2666 | } |
2667 | break; | |
2668 | ||
2669 | case chip_604x: | |
2670 | case chip_608x: | |
47c2b677 | 2671 | hpriv->ops = &mv6xxx_ops; |
ee9ccdf7 | 2672 | hp_flags |= MV_HP_GEN_II; |
47c2b677 | 2673 | |
44c10138 | 2674 | switch (pdev->revision) { |
47c2b677 JG |
2675 | case 0x7: |
2676 | hp_flags |= MV_HP_ERRATA_60X1B2; | |
2677 | break; | |
2678 | case 0x9: | |
2679 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
bca1c4eb JG |
2680 | break; |
2681 | default: | |
2682 | dev_printk(KERN_WARNING, &pdev->dev, | |
47c2b677 JG |
2683 | "Applying B2 workarounds to unknown rev\n"); |
2684 | hp_flags |= MV_HP_ERRATA_60X1B2; | |
bca1c4eb JG |
2685 | break; |
2686 | } | |
2687 | break; | |
2688 | ||
e4e7b892 | 2689 | case chip_7042: |
02a121da | 2690 | hp_flags |= MV_HP_PCIE; |
306b30f7 ML |
2691 | if (pdev->vendor == PCI_VENDOR_ID_TTI && |
2692 | (pdev->device == 0x2300 || pdev->device == 0x2310)) | |
2693 | { | |
4e520033 ML |
2694 | /* |
2695 | * Highpoint RocketRAID PCIe 23xx series cards: | |
2696 | * | |
2697 | * Unconfigured drives are treated as "Legacy" | |
2698 | * by the BIOS, and it overwrites sector 8 with | |
2699 | * a "Lgcy" metadata block prior to Linux boot. | |
2700 | * | |
2701 | * Configured drives (RAID or JBOD) leave sector 8 | |
2702 | * alone, but instead overwrite a high numbered | |
2703 | * sector for the RAID metadata. This sector can | |
2704 | * be determined exactly, by truncating the physical | |
2705 | * drive capacity to a nice even GB value. | |
2706 | * | |
2707 | * RAID metadata is at: (dev->n_sectors & ~0xfffff) | |
2708 | * | |
2709 | * Warn the user, lest they think we're just buggy. | |
2710 | */ | |
2711 | printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID" | |
2712 | " BIOS CORRUPTS DATA on all attached drives," | |
2713 | " regardless of if/how they are configured." | |
2714 | " BEWARE!\n"); | |
2715 | printk(KERN_WARNING DRV_NAME ": For data safety, do not" | |
2716 | " use sectors 8-9 on \"Legacy\" drives," | |
2717 | " and avoid the final two gigabytes on" | |
2718 | " all RocketRAID BIOS initialized drives.\n"); | |
306b30f7 | 2719 | } |
e4e7b892 JG |
2720 | case chip_6042: |
2721 | hpriv->ops = &mv6xxx_ops; | |
e4e7b892 JG |
2722 | hp_flags |= MV_HP_GEN_IIE; |
2723 | ||
44c10138 | 2724 | switch (pdev->revision) { |
e4e7b892 JG |
2725 | case 0x0: |
2726 | hp_flags |= MV_HP_ERRATA_XX42A0; | |
2727 | break; | |
2728 | case 0x1: | |
2729 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
2730 | break; | |
2731 | default: | |
2732 | dev_printk(KERN_WARNING, &pdev->dev, | |
2733 | "Applying 60X1C0 workarounds to unknown rev\n"); | |
2734 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
2735 | break; | |
2736 | } | |
2737 | break; | |
f351b2d6 SB |
2738 | case chip_soc: |
2739 | hpriv->ops = &mv_soc_ops; | |
2740 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
2741 | break; | |
e4e7b892 | 2742 | |
bca1c4eb | 2743 | default: |
f351b2d6 | 2744 | dev_printk(KERN_ERR, host->dev, |
5796d1c4 | 2745 | "BUG: invalid board index %u\n", board_idx); |
bca1c4eb JG |
2746 | return 1; |
2747 | } | |
2748 | ||
2749 | hpriv->hp_flags = hp_flags; | |
02a121da ML |
2750 | if (hp_flags & MV_HP_PCIE) { |
2751 | hpriv->irq_cause_ofs = PCIE_IRQ_CAUSE_OFS; | |
2752 | hpriv->irq_mask_ofs = PCIE_IRQ_MASK_OFS; | |
2753 | hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS; | |
2754 | } else { | |
2755 | hpriv->irq_cause_ofs = PCI_IRQ_CAUSE_OFS; | |
2756 | hpriv->irq_mask_ofs = PCI_IRQ_MASK_OFS; | |
2757 | hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS; | |
2758 | } | |
bca1c4eb JG |
2759 | |
2760 | return 0; | |
2761 | } | |
2762 | ||
05b308e1 | 2763 | /** |
47c2b677 | 2764 | * mv_init_host - Perform some early initialization of the host. |
4447d351 TH |
2765 | * @host: ATA host to initialize |
2766 | * @board_idx: controller index | |
05b308e1 BR |
2767 | * |
2768 | * If possible, do an early global reset of the host. Then do | |
2769 | * our port init and clear/unmask all/relevant host interrupts. | |
2770 | * | |
2771 | * LOCKING: | |
2772 | * Inherited from caller. | |
2773 | */ | |
4447d351 | 2774 | static int mv_init_host(struct ata_host *host, unsigned int board_idx) |
20f733e7 BR |
2775 | { |
2776 | int rc = 0, n_hc, port, hc; | |
4447d351 | 2777 | struct mv_host_priv *hpriv = host->private_data; |
f351b2d6 | 2778 | void __iomem *mmio = hpriv->base; |
47c2b677 | 2779 | |
4447d351 | 2780 | rc = mv_chip_id(host, board_idx); |
bca1c4eb | 2781 | if (rc) |
f351b2d6 SB |
2782 | goto done; |
2783 | ||
2784 | if (HAS_PCI(host)) { | |
2785 | hpriv->main_cause_reg_addr = hpriv->base + | |
2786 | HC_MAIN_IRQ_CAUSE_OFS; | |
2787 | hpriv->main_mask_reg_addr = hpriv->base + HC_MAIN_IRQ_MASK_OFS; | |
2788 | } else { | |
2789 | hpriv->main_cause_reg_addr = hpriv->base + | |
2790 | HC_SOC_MAIN_IRQ_CAUSE_OFS; | |
2791 | hpriv->main_mask_reg_addr = hpriv->base + | |
2792 | HC_SOC_MAIN_IRQ_MASK_OFS; | |
2793 | } | |
2794 | /* global interrupt mask */ | |
2795 | writel(0, hpriv->main_mask_reg_addr); | |
bca1c4eb | 2796 | |
4447d351 | 2797 | n_hc = mv_get_hc_count(host->ports[0]->flags); |
bca1c4eb | 2798 | |
4447d351 | 2799 | for (port = 0; port < host->n_ports; port++) |
47c2b677 | 2800 | hpriv->ops->read_preamp(hpriv, port, mmio); |
20f733e7 | 2801 | |
c9d39130 | 2802 | rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc); |
47c2b677 | 2803 | if (rc) |
20f733e7 | 2804 | goto done; |
20f733e7 | 2805 | |
522479fb | 2806 | hpriv->ops->reset_flash(hpriv, mmio); |
7bb3c529 | 2807 | hpriv->ops->reset_bus(host, mmio); |
47c2b677 | 2808 | hpriv->ops->enable_leds(hpriv, mmio); |
20f733e7 | 2809 | |
4447d351 | 2810 | for (port = 0; port < host->n_ports; port++) { |
ee9ccdf7 | 2811 | if (IS_GEN_II(hpriv)) { |
c9d39130 JG |
2812 | void __iomem *port_mmio = mv_port_base(mmio, port); |
2813 | ||
2a47ce06 | 2814 | u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL); |
eb46d684 ML |
2815 | ifctl |= (1 << 7); /* enable gen2i speed */ |
2816 | ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */ | |
2a47ce06 JG |
2817 | writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL); |
2818 | } | |
2819 | ||
c9d39130 | 2820 | hpriv->ops->phy_errata(hpriv, mmio, port); |
2a47ce06 JG |
2821 | } |
2822 | ||
4447d351 | 2823 | for (port = 0; port < host->n_ports; port++) { |
cbcdd875 | 2824 | struct ata_port *ap = host->ports[port]; |
2a47ce06 | 2825 | void __iomem *port_mmio = mv_port_base(mmio, port); |
cbcdd875 TH |
2826 | |
2827 | mv_port_init(&ap->ioaddr, port_mmio); | |
2828 | ||
7bb3c529 | 2829 | #ifdef CONFIG_PCI |
f351b2d6 SB |
2830 | if (HAS_PCI(host)) { |
2831 | unsigned int offset = port_mmio - mmio; | |
2832 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio"); | |
2833 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port"); | |
2834 | } | |
7bb3c529 | 2835 | #endif |
20f733e7 BR |
2836 | } |
2837 | ||
2838 | for (hc = 0; hc < n_hc; hc++) { | |
31961943 BR |
2839 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
2840 | ||
2841 | VPRINTK("HC%i: HC config=0x%08x HC IRQ cause " | |
2842 | "(before clear)=0x%08x\n", hc, | |
2843 | readl(hc_mmio + HC_CFG_OFS), | |
2844 | readl(hc_mmio + HC_IRQ_CAUSE_OFS)); | |
2845 | ||
2846 | /* Clear any currently outstanding hc interrupt conditions */ | |
2847 | writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS); | |
20f733e7 BR |
2848 | } |
2849 | ||
f351b2d6 SB |
2850 | if (HAS_PCI(host)) { |
2851 | /* Clear any currently outstanding host interrupt conditions */ | |
2852 | writelfl(0, mmio + hpriv->irq_cause_ofs); | |
31961943 | 2853 | |
f351b2d6 SB |
2854 | /* and unmask interrupt generation for host regs */ |
2855 | writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_ofs); | |
2856 | if (IS_GEN_I(hpriv)) | |
2857 | writelfl(~HC_MAIN_MASKED_IRQS_5, | |
2858 | hpriv->main_mask_reg_addr); | |
2859 | else | |
2860 | writelfl(~HC_MAIN_MASKED_IRQS, | |
2861 | hpriv->main_mask_reg_addr); | |
2862 | ||
2863 | VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x " | |
2864 | "PCI int cause/mask=0x%08x/0x%08x\n", | |
2865 | readl(hpriv->main_cause_reg_addr), | |
2866 | readl(hpriv->main_mask_reg_addr), | |
2867 | readl(mmio + hpriv->irq_cause_ofs), | |
2868 | readl(mmio + hpriv->irq_mask_ofs)); | |
2869 | } else { | |
2870 | writelfl(~HC_MAIN_MASKED_IRQS_SOC, | |
2871 | hpriv->main_mask_reg_addr); | |
2872 | VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x\n", | |
2873 | readl(hpriv->main_cause_reg_addr), | |
2874 | readl(hpriv->main_mask_reg_addr)); | |
2875 | } | |
2876 | done: | |
2877 | return rc; | |
2878 | } | |
fb621e2f | 2879 | |
fbf14e2f BB |
2880 | static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev) |
2881 | { | |
2882 | hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ, | |
2883 | MV_CRQB_Q_SZ, 0); | |
2884 | if (!hpriv->crqb_pool) | |
2885 | return -ENOMEM; | |
2886 | ||
2887 | hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ, | |
2888 | MV_CRPB_Q_SZ, 0); | |
2889 | if (!hpriv->crpb_pool) | |
2890 | return -ENOMEM; | |
2891 | ||
2892 | hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ, | |
2893 | MV_SG_TBL_SZ, 0); | |
2894 | if (!hpriv->sg_tbl_pool) | |
2895 | return -ENOMEM; | |
2896 | ||
2897 | return 0; | |
2898 | } | |
2899 | ||
f351b2d6 SB |
2900 | /** |
2901 | * mv_platform_probe - handle a positive probe of an soc Marvell | |
2902 | * host | |
2903 | * @pdev: platform device found | |
2904 | * | |
2905 | * LOCKING: | |
2906 | * Inherited from caller. | |
2907 | */ | |
2908 | static int mv_platform_probe(struct platform_device *pdev) | |
2909 | { | |
2910 | static int printed_version; | |
2911 | const struct mv_sata_platform_data *mv_platform_data; | |
2912 | const struct ata_port_info *ppi[] = | |
2913 | { &mv_port_info[chip_soc], NULL }; | |
2914 | struct ata_host *host; | |
2915 | struct mv_host_priv *hpriv; | |
2916 | struct resource *res; | |
2917 | int n_ports, rc; | |
20f733e7 | 2918 | |
f351b2d6 SB |
2919 | if (!printed_version++) |
2920 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); | |
bca1c4eb | 2921 | |
f351b2d6 SB |
2922 | /* |
2923 | * Simple resource validation .. | |
2924 | */ | |
2925 | if (unlikely(pdev->num_resources != 2)) { | |
2926 | dev_err(&pdev->dev, "invalid number of resources\n"); | |
2927 | return -EINVAL; | |
2928 | } | |
2929 | ||
2930 | /* | |
2931 | * Get the register base first | |
2932 | */ | |
2933 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2934 | if (res == NULL) | |
2935 | return -EINVAL; | |
2936 | ||
2937 | /* allocate host */ | |
2938 | mv_platform_data = pdev->dev.platform_data; | |
2939 | n_ports = mv_platform_data->n_ports; | |
2940 | ||
2941 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
2942 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
2943 | ||
2944 | if (!host || !hpriv) | |
2945 | return -ENOMEM; | |
2946 | host->private_data = hpriv; | |
2947 | hpriv->n_ports = n_ports; | |
2948 | ||
2949 | host->iomap = NULL; | |
2950 | hpriv->base = ioremap(res->start, res->end - res->start + 1); | |
2951 | hpriv->base -= MV_SATAHC0_REG_BASE; | |
2952 | ||
fbf14e2f BB |
2953 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
2954 | if (rc) | |
2955 | return rc; | |
2956 | ||
f351b2d6 SB |
2957 | /* initialize adapter */ |
2958 | rc = mv_init_host(host, chip_soc); | |
2959 | if (rc) | |
2960 | return rc; | |
2961 | ||
2962 | dev_printk(KERN_INFO, &pdev->dev, | |
2963 | "slots %u ports %d\n", (unsigned)MV_MAX_Q_DEPTH, | |
2964 | host->n_ports); | |
2965 | ||
2966 | return ata_host_activate(host, platform_get_irq(pdev, 0), mv_interrupt, | |
2967 | IRQF_SHARED, &mv6_sht); | |
2968 | } | |
2969 | ||
2970 | /* | |
2971 | * | |
2972 | * mv_platform_remove - unplug a platform interface | |
2973 | * @pdev: platform device | |
2974 | * | |
2975 | * A platform bus SATA device has been unplugged. Perform the needed | |
2976 | * cleanup. Also called on module unload for any active devices. | |
2977 | */ | |
2978 | static int __devexit mv_platform_remove(struct platform_device *pdev) | |
2979 | { | |
2980 | struct device *dev = &pdev->dev; | |
2981 | struct ata_host *host = dev_get_drvdata(dev); | |
2982 | struct mv_host_priv *hpriv = host->private_data; | |
2983 | void __iomem *base = hpriv->base; | |
2984 | ||
2985 | ata_host_detach(host); | |
2986 | iounmap(base); | |
2987 | return 0; | |
20f733e7 BR |
2988 | } |
2989 | ||
f351b2d6 SB |
2990 | static struct platform_driver mv_platform_driver = { |
2991 | .probe = mv_platform_probe, | |
2992 | .remove = __devexit_p(mv_platform_remove), | |
2993 | .driver = { | |
2994 | .name = DRV_NAME, | |
2995 | .owner = THIS_MODULE, | |
2996 | }, | |
2997 | }; | |
2998 | ||
2999 | ||
7bb3c529 | 3000 | #ifdef CONFIG_PCI |
f351b2d6 SB |
3001 | static int mv_pci_init_one(struct pci_dev *pdev, |
3002 | const struct pci_device_id *ent); | |
3003 | ||
7bb3c529 SB |
3004 | |
3005 | static struct pci_driver mv_pci_driver = { | |
3006 | .name = DRV_NAME, | |
3007 | .id_table = mv_pci_tbl, | |
f351b2d6 | 3008 | .probe = mv_pci_init_one, |
7bb3c529 SB |
3009 | .remove = ata_pci_remove_one, |
3010 | }; | |
3011 | ||
3012 | /* | |
3013 | * module options | |
3014 | */ | |
3015 | static int msi; /* Use PCI msi; either zero (off, default) or non-zero */ | |
3016 | ||
3017 | ||
3018 | /* move to PCI layer or libata core? */ | |
3019 | static int pci_go_64(struct pci_dev *pdev) | |
3020 | { | |
3021 | int rc; | |
3022 | ||
3023 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { | |
3024 | rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
3025 | if (rc) { | |
3026 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
3027 | if (rc) { | |
3028 | dev_printk(KERN_ERR, &pdev->dev, | |
3029 | "64-bit DMA enable failed\n"); | |
3030 | return rc; | |
3031 | } | |
3032 | } | |
3033 | } else { | |
3034 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
3035 | if (rc) { | |
3036 | dev_printk(KERN_ERR, &pdev->dev, | |
3037 | "32-bit DMA enable failed\n"); | |
3038 | return rc; | |
3039 | } | |
3040 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
3041 | if (rc) { | |
3042 | dev_printk(KERN_ERR, &pdev->dev, | |
3043 | "32-bit consistent DMA enable failed\n"); | |
3044 | return rc; | |
3045 | } | |
3046 | } | |
3047 | ||
3048 | return rc; | |
3049 | } | |
3050 | ||
05b308e1 BR |
3051 | /** |
3052 | * mv_print_info - Dump key info to kernel log for perusal. | |
4447d351 | 3053 | * @host: ATA host to print info about |
05b308e1 BR |
3054 | * |
3055 | * FIXME: complete this. | |
3056 | * | |
3057 | * LOCKING: | |
3058 | * Inherited from caller. | |
3059 | */ | |
4447d351 | 3060 | static void mv_print_info(struct ata_host *host) |
31961943 | 3061 | { |
4447d351 TH |
3062 | struct pci_dev *pdev = to_pci_dev(host->dev); |
3063 | struct mv_host_priv *hpriv = host->private_data; | |
44c10138 | 3064 | u8 scc; |
c1e4fe71 | 3065 | const char *scc_s, *gen; |
31961943 BR |
3066 | |
3067 | /* Use this to determine the HW stepping of the chip so we know | |
3068 | * what errata to workaround | |
3069 | */ | |
31961943 BR |
3070 | pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc); |
3071 | if (scc == 0) | |
3072 | scc_s = "SCSI"; | |
3073 | else if (scc == 0x01) | |
3074 | scc_s = "RAID"; | |
3075 | else | |
c1e4fe71 JG |
3076 | scc_s = "?"; |
3077 | ||
3078 | if (IS_GEN_I(hpriv)) | |
3079 | gen = "I"; | |
3080 | else if (IS_GEN_II(hpriv)) | |
3081 | gen = "II"; | |
3082 | else if (IS_GEN_IIE(hpriv)) | |
3083 | gen = "IIE"; | |
3084 | else | |
3085 | gen = "?"; | |
31961943 | 3086 | |
a9524a76 | 3087 | dev_printk(KERN_INFO, &pdev->dev, |
c1e4fe71 JG |
3088 | "Gen-%s %u slots %u ports %s mode IRQ via %s\n", |
3089 | gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports, | |
31961943 BR |
3090 | scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx"); |
3091 | } | |
3092 | ||
05b308e1 | 3093 | /** |
f351b2d6 | 3094 | * mv_pci_init_one - handle a positive probe of a PCI Marvell host |
05b308e1 BR |
3095 | * @pdev: PCI device found |
3096 | * @ent: PCI device ID entry for the matched host | |
3097 | * | |
3098 | * LOCKING: | |
3099 | * Inherited from caller. | |
3100 | */ | |
f351b2d6 SB |
3101 | static int mv_pci_init_one(struct pci_dev *pdev, |
3102 | const struct pci_device_id *ent) | |
20f733e7 | 3103 | { |
2dcb407e | 3104 | static int printed_version; |
20f733e7 | 3105 | unsigned int board_idx = (unsigned int)ent->driver_data; |
4447d351 TH |
3106 | const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL }; |
3107 | struct ata_host *host; | |
3108 | struct mv_host_priv *hpriv; | |
3109 | int n_ports, rc; | |
20f733e7 | 3110 | |
a9524a76 JG |
3111 | if (!printed_version++) |
3112 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); | |
20f733e7 | 3113 | |
4447d351 TH |
3114 | /* allocate host */ |
3115 | n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC; | |
3116 | ||
3117 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
3118 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
3119 | if (!host || !hpriv) | |
3120 | return -ENOMEM; | |
3121 | host->private_data = hpriv; | |
f351b2d6 | 3122 | hpriv->n_ports = n_ports; |
4447d351 TH |
3123 | |
3124 | /* acquire resources */ | |
24dc5f33 TH |
3125 | rc = pcim_enable_device(pdev); |
3126 | if (rc) | |
20f733e7 | 3127 | return rc; |
20f733e7 | 3128 | |
0d5ff566 TH |
3129 | rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME); |
3130 | if (rc == -EBUSY) | |
24dc5f33 | 3131 | pcim_pin_device(pdev); |
0d5ff566 | 3132 | if (rc) |
24dc5f33 | 3133 | return rc; |
4447d351 | 3134 | host->iomap = pcim_iomap_table(pdev); |
f351b2d6 | 3135 | hpriv->base = host->iomap[MV_PRIMARY_BAR]; |
20f733e7 | 3136 | |
d88184fb JG |
3137 | rc = pci_go_64(pdev); |
3138 | if (rc) | |
3139 | return rc; | |
3140 | ||
da2fa9ba ML |
3141 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
3142 | if (rc) | |
3143 | return rc; | |
3144 | ||
20f733e7 | 3145 | /* initialize adapter */ |
4447d351 | 3146 | rc = mv_init_host(host, board_idx); |
24dc5f33 TH |
3147 | if (rc) |
3148 | return rc; | |
20f733e7 | 3149 | |
31961943 | 3150 | /* Enable interrupts */ |
6a59dcf8 | 3151 | if (msi && pci_enable_msi(pdev)) |
31961943 | 3152 | pci_intx(pdev, 1); |
20f733e7 | 3153 | |
31961943 | 3154 | mv_dump_pci_cfg(pdev, 0x68); |
4447d351 | 3155 | mv_print_info(host); |
20f733e7 | 3156 | |
4447d351 | 3157 | pci_set_master(pdev); |
ea8b4db9 | 3158 | pci_try_set_mwi(pdev); |
4447d351 | 3159 | return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED, |
c5d3e45a | 3160 | IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht); |
20f733e7 | 3161 | } |
7bb3c529 | 3162 | #endif |
20f733e7 | 3163 | |
f351b2d6 SB |
3164 | static int mv_platform_probe(struct platform_device *pdev); |
3165 | static int __devexit mv_platform_remove(struct platform_device *pdev); | |
3166 | ||
20f733e7 BR |
3167 | static int __init mv_init(void) |
3168 | { | |
7bb3c529 SB |
3169 | int rc = -ENODEV; |
3170 | #ifdef CONFIG_PCI | |
3171 | rc = pci_register_driver(&mv_pci_driver); | |
f351b2d6 SB |
3172 | if (rc < 0) |
3173 | return rc; | |
3174 | #endif | |
3175 | rc = platform_driver_register(&mv_platform_driver); | |
3176 | ||
3177 | #ifdef CONFIG_PCI | |
3178 | if (rc < 0) | |
3179 | pci_unregister_driver(&mv_pci_driver); | |
7bb3c529 SB |
3180 | #endif |
3181 | return rc; | |
20f733e7 BR |
3182 | } |
3183 | ||
3184 | static void __exit mv_exit(void) | |
3185 | { | |
7bb3c529 | 3186 | #ifdef CONFIG_PCI |
20f733e7 | 3187 | pci_unregister_driver(&mv_pci_driver); |
7bb3c529 | 3188 | #endif |
f351b2d6 | 3189 | platform_driver_unregister(&mv_platform_driver); |
20f733e7 BR |
3190 | } |
3191 | ||
3192 | MODULE_AUTHOR("Brett Russ"); | |
3193 | MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers"); | |
3194 | MODULE_LICENSE("GPL"); | |
3195 | MODULE_DEVICE_TABLE(pci, mv_pci_tbl); | |
3196 | MODULE_VERSION(DRV_VERSION); | |
2e7e1214 | 3197 | MODULE_ALIAS("platform:sata_mv"); |
20f733e7 | 3198 | |
7bb3c529 | 3199 | #ifdef CONFIG_PCI |
ddef9bb3 JG |
3200 | module_param(msi, int, 0444); |
3201 | MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)"); | |
7bb3c529 | 3202 | #endif |
ddef9bb3 | 3203 | |
20f733e7 BR |
3204 | module_init(mv_init); |
3205 | module_exit(mv_exit); |