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20f733e7 BR |
1 | /* |
2 | * sata_mv.c - Marvell SATA support | |
3 | * | |
e12bef50 | 4 | * Copyright 2008: Marvell Corporation, all rights reserved. |
8b260248 | 5 | * Copyright 2005: EMC Corporation, all rights reserved. |
e2b1be56 | 6 | * Copyright 2005 Red Hat, Inc. All rights reserved. |
20f733e7 BR |
7 | * |
8 | * Please ALWAYS copy linux-ide@vger.kernel.org on emails. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; version 2 of the License. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | */ | |
24 | ||
4a05e209 | 25 | /* |
85afb934 ML |
26 | * sata_mv TODO list: |
27 | * | |
28 | * --> Errata workaround for NCQ device errors. | |
29 | * | |
30 | * --> More errata workarounds for PCI-X. | |
31 | * | |
32 | * --> Complete a full errata audit for all chipsets to identify others. | |
33 | * | |
34 | * --> ATAPI support (Marvell claims the 60xx/70xx chips can do it). | |
35 | * | |
36 | * --> Investigate problems with PCI Message Signalled Interrupts (MSI). | |
37 | * | |
38 | * --> Cache frequently-accessed registers in mv_port_priv to reduce overhead. | |
39 | * | |
40 | * --> Develop a low-power-consumption strategy, and implement it. | |
41 | * | |
42 | * --> [Experiment, low priority] Investigate interrupt coalescing. | |
43 | * Quite often, especially with PCI Message Signalled Interrupts (MSI), | |
44 | * the overhead reduced by interrupt mitigation is quite often not | |
45 | * worth the latency cost. | |
46 | * | |
47 | * --> [Experiment, Marvell value added] Is it possible to use target | |
48 | * mode to cross-connect two Linux boxes with Marvell cards? If so, | |
49 | * creating LibATA target mode support would be very interesting. | |
50 | * | |
51 | * Target mode, for those without docs, is the ability to directly | |
52 | * connect two SATA ports. | |
53 | */ | |
4a05e209 | 54 | |
20f733e7 BR |
55 | #include <linux/kernel.h> |
56 | #include <linux/module.h> | |
57 | #include <linux/pci.h> | |
58 | #include <linux/init.h> | |
59 | #include <linux/blkdev.h> | |
60 | #include <linux/delay.h> | |
61 | #include <linux/interrupt.h> | |
8d8b6004 | 62 | #include <linux/dmapool.h> |
20f733e7 | 63 | #include <linux/dma-mapping.h> |
a9524a76 | 64 | #include <linux/device.h> |
f351b2d6 SB |
65 | #include <linux/platform_device.h> |
66 | #include <linux/ata_platform.h> | |
15a32632 | 67 | #include <linux/mbus.h> |
c46938cc | 68 | #include <linux/bitops.h> |
20f733e7 | 69 | #include <scsi/scsi_host.h> |
193515d5 | 70 | #include <scsi/scsi_cmnd.h> |
6c08772e | 71 | #include <scsi/scsi_device.h> |
20f733e7 | 72 | #include <linux/libata.h> |
20f733e7 BR |
73 | |
74 | #define DRV_NAME "sata_mv" | |
0388a8c0 | 75 | #define DRV_VERSION "1.24" |
20f733e7 BR |
76 | |
77 | enum { | |
78 | /* BAR's are enumerated in terms of pci_resource_start() terms */ | |
79 | MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */ | |
80 | MV_IO_BAR = 2, /* offset 0x18: IO space */ | |
81 | MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */ | |
82 | ||
83 | MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */ | |
84 | MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */ | |
85 | ||
86 | MV_PCI_REG_BASE = 0, | |
87 | MV_IRQ_COAL_REG_BASE = 0x18000, /* 6xxx part only */ | |
615ab953 ML |
88 | MV_IRQ_COAL_CAUSE = (MV_IRQ_COAL_REG_BASE + 0x08), |
89 | MV_IRQ_COAL_CAUSE_LO = (MV_IRQ_COAL_REG_BASE + 0x88), | |
90 | MV_IRQ_COAL_CAUSE_HI = (MV_IRQ_COAL_REG_BASE + 0x8c), | |
91 | MV_IRQ_COAL_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xcc), | |
92 | MV_IRQ_COAL_TIME_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xd0), | |
93 | ||
20f733e7 | 94 | MV_SATAHC0_REG_BASE = 0x20000, |
8e7decdb ML |
95 | MV_FLASH_CTL_OFS = 0x1046c, |
96 | MV_GPIO_PORT_CTL_OFS = 0x104f0, | |
97 | MV_RESET_CFG_OFS = 0x180d8, | |
20f733e7 BR |
98 | |
99 | MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ, | |
100 | MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ, | |
101 | MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */ | |
102 | MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ, | |
103 | ||
31961943 BR |
104 | MV_MAX_Q_DEPTH = 32, |
105 | MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1, | |
106 | ||
107 | /* CRQB needs alignment on a 1KB boundary. Size == 1KB | |
108 | * CRPB needs alignment on a 256B boundary. Size == 256B | |
31961943 BR |
109 | * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B |
110 | */ | |
111 | MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH), | |
112 | MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH), | |
da2fa9ba | 113 | MV_MAX_SG_CT = 256, |
31961943 | 114 | MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT), |
31961943 | 115 | |
352fab70 | 116 | /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */ |
20f733e7 | 117 | MV_PORT_HC_SHIFT = 2, |
352fab70 ML |
118 | MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */ |
119 | /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */ | |
120 | MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */ | |
20f733e7 BR |
121 | |
122 | /* Host Flags */ | |
123 | MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */ | |
124 | MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */ | |
7bb3c529 | 125 | |
c5d3e45a | 126 | MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
bdd4ddde JG |
127 | ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI | |
128 | ATA_FLAG_PIO_POLLING, | |
ad3aef51 | 129 | |
47c2b677 | 130 | MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE, |
20f733e7 | 131 | |
ad3aef51 ML |
132 | MV_GENIIE_FLAGS = MV_COMMON_FLAGS | MV_6XXX_FLAGS | |
133 | ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA | | |
c443c500 | 134 | ATA_FLAG_NCQ | ATA_FLAG_AN, |
ad3aef51 | 135 | |
31961943 BR |
136 | CRQB_FLAG_READ = (1 << 0), |
137 | CRQB_TAG_SHIFT = 1, | |
c5d3e45a | 138 | CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */ |
e12bef50 | 139 | CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */ |
c5d3e45a | 140 | CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */ |
31961943 BR |
141 | CRQB_CMD_ADDR_SHIFT = 8, |
142 | CRQB_CMD_CS = (0x2 << 11), | |
143 | CRQB_CMD_LAST = (1 << 15), | |
144 | ||
145 | CRPB_FLAG_STATUS_SHIFT = 8, | |
c5d3e45a JG |
146 | CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */ |
147 | CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */ | |
31961943 BR |
148 | |
149 | EPRD_FLAG_END_OF_TBL = (1 << 31), | |
150 | ||
20f733e7 BR |
151 | /* PCI interface registers */ |
152 | ||
31961943 | 153 | PCI_COMMAND_OFS = 0xc00, |
8e7decdb | 154 | PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */ |
31961943 | 155 | |
20f733e7 BR |
156 | PCI_MAIN_CMD_STS_OFS = 0xd30, |
157 | STOP_PCI_MASTER = (1 << 2), | |
158 | PCI_MASTER_EMPTY = (1 << 3), | |
159 | GLOB_SFT_RST = (1 << 4), | |
160 | ||
8e7decdb ML |
161 | MV_PCI_MODE_OFS = 0xd00, |
162 | MV_PCI_MODE_MASK = 0x30, | |
163 | ||
522479fb JG |
164 | MV_PCI_EXP_ROM_BAR_CTL = 0xd2c, |
165 | MV_PCI_DISC_TIMER = 0xd04, | |
166 | MV_PCI_MSI_TRIGGER = 0xc38, | |
167 | MV_PCI_SERR_MASK = 0xc28, | |
8e7decdb | 168 | MV_PCI_XBAR_TMOUT_OFS = 0x1d04, |
522479fb JG |
169 | MV_PCI_ERR_LOW_ADDRESS = 0x1d40, |
170 | MV_PCI_ERR_HIGH_ADDRESS = 0x1d44, | |
171 | MV_PCI_ERR_ATTRIBUTE = 0x1d48, | |
172 | MV_PCI_ERR_COMMAND = 0x1d50, | |
173 | ||
02a121da ML |
174 | PCI_IRQ_CAUSE_OFS = 0x1d58, |
175 | PCI_IRQ_MASK_OFS = 0x1d5c, | |
20f733e7 BR |
176 | PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */ |
177 | ||
02a121da ML |
178 | PCIE_IRQ_CAUSE_OFS = 0x1900, |
179 | PCIE_IRQ_MASK_OFS = 0x1910, | |
646a4da5 | 180 | PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */ |
02a121da | 181 | |
7368f919 ML |
182 | /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */ |
183 | PCI_HC_MAIN_IRQ_CAUSE_OFS = 0x1d60, | |
184 | PCI_HC_MAIN_IRQ_MASK_OFS = 0x1d64, | |
185 | SOC_HC_MAIN_IRQ_CAUSE_OFS = 0x20020, | |
186 | SOC_HC_MAIN_IRQ_MASK_OFS = 0x20024, | |
352fab70 ML |
187 | ERR_IRQ = (1 << 0), /* shift by port # */ |
188 | DONE_IRQ = (1 << 1), /* shift by port # */ | |
20f733e7 BR |
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 */ |
e12bef50 | 202 | HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */ |
20f733e7 BR |
203 | |
204 | /* SATAHC registers */ | |
205 | HC_CFG_OFS = 0, | |
206 | ||
207 | HC_IRQ_CAUSE_OFS = 0x14, | |
352fab70 ML |
208 | DMA_IRQ = (1 << 0), /* shift by port # */ |
209 | HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */ | |
20f733e7 BR |
210 | DEV_IRQ = (1 << 8), /* shift by port # */ |
211 | ||
212 | /* Shadow block registers */ | |
31961943 BR |
213 | SHD_BLK_OFS = 0x100, |
214 | SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */ | |
20f733e7 BR |
215 | |
216 | /* SATA registers */ | |
217 | SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */ | |
218 | SATA_ACTIVE_OFS = 0x350, | |
0c58912e | 219 | SATA_FIS_IRQ_CAUSE_OFS = 0x364, |
c443c500 | 220 | SATA_FIS_IRQ_AN = (1 << 9), /* async notification */ |
17c5aab5 | 221 | |
e12bef50 | 222 | LTMODE_OFS = 0x30c, |
17c5aab5 ML |
223 | LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */ |
224 | ||
47c2b677 | 225 | PHY_MODE3 = 0x310, |
bca1c4eb | 226 | PHY_MODE4 = 0x314, |
ba069e37 ML |
227 | PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */ |
228 | PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */ | |
229 | PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */ | |
230 | PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */ | |
231 | ||
bca1c4eb | 232 | PHY_MODE2 = 0x330, |
e12bef50 | 233 | SATA_IFCTL_OFS = 0x344, |
8e7decdb | 234 | SATA_TESTCTL_OFS = 0x348, |
e12bef50 ML |
235 | SATA_IFSTAT_OFS = 0x34c, |
236 | VENDOR_UNIQUE_FIS_OFS = 0x35c, | |
17c5aab5 | 237 | |
8e7decdb ML |
238 | FISCFG_OFS = 0x360, |
239 | FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */ | |
240 | FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */ | |
17c5aab5 | 241 | |
c9d39130 | 242 | MV5_PHY_MODE = 0x74, |
8e7decdb ML |
243 | MV5_LTMODE_OFS = 0x30, |
244 | MV5_PHY_CTL_OFS = 0x0C, | |
245 | SATA_INTERFACE_CFG_OFS = 0x050, | |
bca1c4eb JG |
246 | |
247 | MV_M2_PREAMP_MASK = 0x7e0, | |
20f733e7 BR |
248 | |
249 | /* Port registers */ | |
250 | EDMA_CFG_OFS = 0, | |
0c58912e ML |
251 | EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */ |
252 | EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */ | |
253 | EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */ | |
254 | EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */ | |
255 | EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */ | |
e12bef50 ML |
256 | EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */ |
257 | EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */ | |
20f733e7 BR |
258 | |
259 | EDMA_ERR_IRQ_CAUSE_OFS = 0x8, | |
260 | EDMA_ERR_IRQ_MASK_OFS = 0xc, | |
6c1153e0 JG |
261 | EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */ |
262 | EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */ | |
263 | EDMA_ERR_DEV = (1 << 2), /* device error */ | |
264 | EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */ | |
265 | EDMA_ERR_DEV_CON = (1 << 4), /* device connected */ | |
266 | EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */ | |
c5d3e45a JG |
267 | EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */ |
268 | EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */ | |
6c1153e0 | 269 | EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */ |
c5d3e45a | 270 | EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */ |
6c1153e0 JG |
271 | EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */ |
272 | EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */ | |
273 | EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */ | |
274 | EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */ | |
646a4da5 | 275 | |
6c1153e0 | 276 | EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */ |
646a4da5 ML |
277 | EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */ |
278 | EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */ | |
279 | EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */ | |
280 | EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */ | |
281 | ||
6c1153e0 | 282 | EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */ |
646a4da5 | 283 | |
6c1153e0 | 284 | EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */ |
646a4da5 ML |
285 | EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */ |
286 | EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */ | |
287 | EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */ | |
288 | EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */ | |
289 | EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */ | |
290 | ||
6c1153e0 | 291 | EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */ |
646a4da5 | 292 | |
6c1153e0 | 293 | EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */ |
c5d3e45a JG |
294 | EDMA_ERR_OVERRUN_5 = (1 << 5), |
295 | EDMA_ERR_UNDERRUN_5 = (1 << 6), | |
646a4da5 ML |
296 | |
297 | EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 | | |
298 | EDMA_ERR_LNK_CTRL_RX_1 | | |
299 | EDMA_ERR_LNK_CTRL_RX_3 | | |
85afb934 | 300 | EDMA_ERR_LNK_CTRL_TX, |
646a4da5 | 301 | |
bdd4ddde JG |
302 | EDMA_EH_FREEZE = EDMA_ERR_D_PAR | |
303 | EDMA_ERR_PRD_PAR | | |
304 | EDMA_ERR_DEV_DCON | | |
305 | EDMA_ERR_DEV_CON | | |
306 | EDMA_ERR_SERR | | |
307 | EDMA_ERR_SELF_DIS | | |
6c1153e0 | 308 | EDMA_ERR_CRQB_PAR | |
bdd4ddde JG |
309 | EDMA_ERR_CRPB_PAR | |
310 | EDMA_ERR_INTRL_PAR | | |
311 | EDMA_ERR_IORDY | | |
312 | EDMA_ERR_LNK_CTRL_RX_2 | | |
313 | EDMA_ERR_LNK_DATA_RX | | |
314 | EDMA_ERR_LNK_DATA_TX | | |
315 | EDMA_ERR_TRANS_PROTO, | |
e12bef50 | 316 | |
bdd4ddde JG |
317 | EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR | |
318 | EDMA_ERR_PRD_PAR | | |
319 | EDMA_ERR_DEV_DCON | | |
320 | EDMA_ERR_DEV_CON | | |
321 | EDMA_ERR_OVERRUN_5 | | |
322 | EDMA_ERR_UNDERRUN_5 | | |
323 | EDMA_ERR_SELF_DIS_5 | | |
6c1153e0 | 324 | EDMA_ERR_CRQB_PAR | |
bdd4ddde JG |
325 | EDMA_ERR_CRPB_PAR | |
326 | EDMA_ERR_INTRL_PAR | | |
327 | EDMA_ERR_IORDY, | |
20f733e7 | 328 | |
31961943 BR |
329 | EDMA_REQ_Q_BASE_HI_OFS = 0x10, |
330 | EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */ | |
31961943 BR |
331 | |
332 | EDMA_REQ_Q_OUT_PTR_OFS = 0x18, | |
333 | EDMA_REQ_Q_PTR_SHIFT = 5, | |
334 | ||
335 | EDMA_RSP_Q_BASE_HI_OFS = 0x1c, | |
336 | EDMA_RSP_Q_IN_PTR_OFS = 0x20, | |
337 | EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */ | |
31961943 BR |
338 | EDMA_RSP_Q_PTR_SHIFT = 3, |
339 | ||
0ea9e179 JG |
340 | EDMA_CMD_OFS = 0x28, /* EDMA command register */ |
341 | EDMA_EN = (1 << 0), /* enable EDMA */ | |
342 | EDMA_DS = (1 << 1), /* disable EDMA; self-negated */ | |
8e7decdb ML |
343 | EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */ |
344 | ||
345 | EDMA_STATUS_OFS = 0x30, /* EDMA engine status */ | |
346 | EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */ | |
347 | EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */ | |
20f733e7 | 348 | |
8e7decdb ML |
349 | EDMA_IORDY_TMOUT_OFS = 0x34, |
350 | EDMA_ARB_CFG_OFS = 0x38, | |
351 | ||
352 | EDMA_HALTCOND_OFS = 0x60, /* GenIIe halt conditions */ | |
bca1c4eb | 353 | |
352fab70 ML |
354 | GEN_II_NCQ_MAX_SECTORS = 256, /* max sects/io on Gen2 w/NCQ */ |
355 | ||
31961943 BR |
356 | /* Host private flags (hp_flags) */ |
357 | MV_HP_FLAG_MSI = (1 << 0), | |
47c2b677 JG |
358 | MV_HP_ERRATA_50XXB0 = (1 << 1), |
359 | MV_HP_ERRATA_50XXB2 = (1 << 2), | |
360 | MV_HP_ERRATA_60X1B2 = (1 << 3), | |
361 | MV_HP_ERRATA_60X1C0 = (1 << 4), | |
0ea9e179 JG |
362 | MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */ |
363 | MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */ | |
364 | MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */ | |
02a121da | 365 | MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */ |
616d4a98 | 366 | MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */ |
1f398472 | 367 | MV_HP_FLAG_SOC = (1 << 11), /* SystemOnChip, no PCI */ |
20f733e7 | 368 | |
31961943 | 369 | /* Port private flags (pp_flags) */ |
0ea9e179 | 370 | MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */ |
72109168 | 371 | MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */ |
00f42eab | 372 | MV_PP_FLAG_FBS_EN = (1 << 2), /* is EDMA set up for FBS? */ |
29d187bb | 373 | MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */ |
20f733e7 BR |
374 | }; |
375 | ||
ee9ccdf7 JG |
376 | #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I) |
377 | #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II) | |
e4e7b892 | 378 | #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE) |
8e7decdb | 379 | #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE) |
1f398472 | 380 | #define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC) |
bca1c4eb | 381 | |
15a32632 LB |
382 | #define WINDOW_CTRL(i) (0x20030 + ((i) << 4)) |
383 | #define WINDOW_BASE(i) (0x20034 + ((i) << 4)) | |
384 | ||
095fec88 | 385 | enum { |
baf14aa1 JG |
386 | /* DMA boundary 0xffff is required by the s/g splitting |
387 | * we need on /length/ in mv_fill-sg(). | |
388 | */ | |
389 | MV_DMA_BOUNDARY = 0xffffU, | |
095fec88 | 390 | |
0ea9e179 JG |
391 | /* mask of register bits containing lower 32 bits |
392 | * of EDMA request queue DMA address | |
393 | */ | |
095fec88 JG |
394 | EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U, |
395 | ||
0ea9e179 | 396 | /* ditto, for response queue */ |
095fec88 JG |
397 | EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U, |
398 | }; | |
399 | ||
522479fb JG |
400 | enum chip_type { |
401 | chip_504x, | |
402 | chip_508x, | |
403 | chip_5080, | |
404 | chip_604x, | |
405 | chip_608x, | |
e4e7b892 JG |
406 | chip_6042, |
407 | chip_7042, | |
f351b2d6 | 408 | chip_soc, |
522479fb JG |
409 | }; |
410 | ||
31961943 BR |
411 | /* Command ReQuest Block: 32B */ |
412 | struct mv_crqb { | |
e1469874 ML |
413 | __le32 sg_addr; |
414 | __le32 sg_addr_hi; | |
415 | __le16 ctrl_flags; | |
416 | __le16 ata_cmd[11]; | |
31961943 | 417 | }; |
20f733e7 | 418 | |
e4e7b892 | 419 | struct mv_crqb_iie { |
e1469874 ML |
420 | __le32 addr; |
421 | __le32 addr_hi; | |
422 | __le32 flags; | |
423 | __le32 len; | |
424 | __le32 ata_cmd[4]; | |
e4e7b892 JG |
425 | }; |
426 | ||
31961943 BR |
427 | /* Command ResPonse Block: 8B */ |
428 | struct mv_crpb { | |
e1469874 ML |
429 | __le16 id; |
430 | __le16 flags; | |
431 | __le32 tmstmp; | |
20f733e7 BR |
432 | }; |
433 | ||
31961943 BR |
434 | /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */ |
435 | struct mv_sg { | |
e1469874 ML |
436 | __le32 addr; |
437 | __le32 flags_size; | |
438 | __le32 addr_hi; | |
439 | __le32 reserved; | |
31961943 | 440 | }; |
20f733e7 | 441 | |
31961943 BR |
442 | struct mv_port_priv { |
443 | struct mv_crqb *crqb; | |
444 | dma_addr_t crqb_dma; | |
445 | struct mv_crpb *crpb; | |
446 | dma_addr_t crpb_dma; | |
eb73d558 ML |
447 | struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH]; |
448 | dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH]; | |
bdd4ddde JG |
449 | |
450 | unsigned int req_idx; | |
451 | unsigned int resp_idx; | |
452 | ||
31961943 | 453 | u32 pp_flags; |
29d187bb | 454 | unsigned int delayed_eh_pmp_map; |
31961943 BR |
455 | }; |
456 | ||
bca1c4eb JG |
457 | struct mv_port_signal { |
458 | u32 amps; | |
459 | u32 pre; | |
460 | }; | |
461 | ||
02a121da ML |
462 | struct mv_host_priv { |
463 | u32 hp_flags; | |
96e2c487 | 464 | u32 main_irq_mask; |
02a121da ML |
465 | struct mv_port_signal signal[8]; |
466 | const struct mv_hw_ops *ops; | |
f351b2d6 SB |
467 | int n_ports; |
468 | void __iomem *base; | |
7368f919 ML |
469 | void __iomem *main_irq_cause_addr; |
470 | void __iomem *main_irq_mask_addr; | |
02a121da ML |
471 | u32 irq_cause_ofs; |
472 | u32 irq_mask_ofs; | |
473 | u32 unmask_all_irqs; | |
da2fa9ba ML |
474 | /* |
475 | * These consistent DMA memory pools give us guaranteed | |
476 | * alignment for hardware-accessed data structures, | |
477 | * and less memory waste in accomplishing the alignment. | |
478 | */ | |
479 | struct dma_pool *crqb_pool; | |
480 | struct dma_pool *crpb_pool; | |
481 | struct dma_pool *sg_tbl_pool; | |
02a121da ML |
482 | }; |
483 | ||
47c2b677 | 484 | struct mv_hw_ops { |
2a47ce06 JG |
485 | void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio, |
486 | unsigned int port); | |
47c2b677 JG |
487 | void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio); |
488 | void (*read_preamp)(struct mv_host_priv *hpriv, int idx, | |
489 | void __iomem *mmio); | |
c9d39130 JG |
490 | int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio, |
491 | unsigned int n_hc); | |
522479fb | 492 | void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio); |
7bb3c529 | 493 | void (*reset_bus)(struct ata_host *host, void __iomem *mmio); |
47c2b677 JG |
494 | }; |
495 | ||
da3dbb17 TH |
496 | static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val); |
497 | static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val); | |
498 | static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val); | |
499 | static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val); | |
31961943 BR |
500 | static int mv_port_start(struct ata_port *ap); |
501 | static void mv_port_stop(struct ata_port *ap); | |
3e4a1391 | 502 | static int mv_qc_defer(struct ata_queued_cmd *qc); |
31961943 | 503 | static void mv_qc_prep(struct ata_queued_cmd *qc); |
e4e7b892 | 504 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc); |
9a3d9eb0 | 505 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc); |
a1efdaba TH |
506 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
507 | unsigned long deadline); | |
bdd4ddde JG |
508 | static void mv_eh_freeze(struct ata_port *ap); |
509 | static void mv_eh_thaw(struct ata_port *ap); | |
f273827e | 510 | static void mv6_dev_config(struct ata_device *dev); |
20f733e7 | 511 | |
2a47ce06 JG |
512 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
513 | unsigned int port); | |
47c2b677 JG |
514 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
515 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, | |
516 | void __iomem *mmio); | |
c9d39130 JG |
517 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
518 | unsigned int n_hc); | |
522479fb | 519 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); |
7bb3c529 | 520 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio); |
47c2b677 | 521 | |
2a47ce06 JG |
522 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
523 | unsigned int port); | |
47c2b677 JG |
524 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
525 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, | |
526 | void __iomem *mmio); | |
c9d39130 JG |
527 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
528 | unsigned int n_hc); | |
522479fb | 529 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); |
f351b2d6 SB |
530 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, |
531 | void __iomem *mmio); | |
532 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, | |
533 | void __iomem *mmio); | |
534 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, | |
535 | void __iomem *mmio, unsigned int n_hc); | |
536 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, | |
537 | void __iomem *mmio); | |
538 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio); | |
7bb3c529 | 539 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio); |
e12bef50 | 540 | static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, |
c9d39130 | 541 | unsigned int port_no); |
e12bef50 | 542 | static int mv_stop_edma(struct ata_port *ap); |
b562468c | 543 | static int mv_stop_edma_engine(void __iomem *port_mmio); |
e12bef50 | 544 | static void mv_edma_cfg(struct ata_port *ap, int want_ncq); |
47c2b677 | 545 | |
e49856d8 ML |
546 | static void mv_pmp_select(struct ata_port *ap, int pmp); |
547 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, | |
548 | unsigned long deadline); | |
549 | static int mv_softreset(struct ata_link *link, unsigned int *class, | |
550 | unsigned long deadline); | |
29d187bb | 551 | static void mv_pmp_error_handler(struct ata_port *ap); |
4c299ca3 ML |
552 | static void mv_process_crpb_entries(struct ata_port *ap, |
553 | struct mv_port_priv *pp); | |
47c2b677 | 554 | |
eb73d558 ML |
555 | /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below |
556 | * because we have to allow room for worst case splitting of | |
557 | * PRDs for 64K boundaries in mv_fill_sg(). | |
558 | */ | |
c5d3e45a | 559 | static struct scsi_host_template mv5_sht = { |
68d1d07b | 560 | ATA_BASE_SHT(DRV_NAME), |
baf14aa1 | 561 | .sg_tablesize = MV_MAX_SG_CT / 2, |
c5d3e45a | 562 | .dma_boundary = MV_DMA_BOUNDARY, |
c5d3e45a JG |
563 | }; |
564 | ||
565 | static struct scsi_host_template mv6_sht = { | |
68d1d07b | 566 | ATA_NCQ_SHT(DRV_NAME), |
138bfdd0 | 567 | .can_queue = MV_MAX_Q_DEPTH - 1, |
baf14aa1 | 568 | .sg_tablesize = MV_MAX_SG_CT / 2, |
20f733e7 | 569 | .dma_boundary = MV_DMA_BOUNDARY, |
20f733e7 BR |
570 | }; |
571 | ||
029cfd6b TH |
572 | static struct ata_port_operations mv5_ops = { |
573 | .inherits = &ata_sff_port_ops, | |
c9d39130 | 574 | |
3e4a1391 | 575 | .qc_defer = mv_qc_defer, |
c9d39130 JG |
576 | .qc_prep = mv_qc_prep, |
577 | .qc_issue = mv_qc_issue, | |
c9d39130 | 578 | |
bdd4ddde JG |
579 | .freeze = mv_eh_freeze, |
580 | .thaw = mv_eh_thaw, | |
a1efdaba | 581 | .hardreset = mv_hardreset, |
a1efdaba | 582 | .error_handler = ata_std_error_handler, /* avoid SFF EH */ |
029cfd6b | 583 | .post_internal_cmd = ATA_OP_NULL, |
bdd4ddde | 584 | |
c9d39130 JG |
585 | .scr_read = mv5_scr_read, |
586 | .scr_write = mv5_scr_write, | |
587 | ||
588 | .port_start = mv_port_start, | |
589 | .port_stop = mv_port_stop, | |
c9d39130 JG |
590 | }; |
591 | ||
029cfd6b TH |
592 | static struct ata_port_operations mv6_ops = { |
593 | .inherits = &mv5_ops, | |
f273827e | 594 | .dev_config = mv6_dev_config, |
20f733e7 BR |
595 | .scr_read = mv_scr_read, |
596 | .scr_write = mv_scr_write, | |
597 | ||
e49856d8 ML |
598 | .pmp_hardreset = mv_pmp_hardreset, |
599 | .pmp_softreset = mv_softreset, | |
600 | .softreset = mv_softreset, | |
29d187bb | 601 | .error_handler = mv_pmp_error_handler, |
20f733e7 BR |
602 | }; |
603 | ||
029cfd6b TH |
604 | static struct ata_port_operations mv_iie_ops = { |
605 | .inherits = &mv6_ops, | |
606 | .dev_config = ATA_OP_NULL, | |
e4e7b892 | 607 | .qc_prep = mv_qc_prep_iie, |
e4e7b892 JG |
608 | }; |
609 | ||
98ac62de | 610 | static const struct ata_port_info mv_port_info[] = { |
20f733e7 | 611 | { /* chip_504x */ |
cca3974e | 612 | .flags = MV_COMMON_FLAGS, |
31961943 | 613 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 614 | .udma_mask = ATA_UDMA6, |
c9d39130 | 615 | .port_ops = &mv5_ops, |
20f733e7 BR |
616 | }, |
617 | { /* chip_508x */ | |
c5d3e45a | 618 | .flags = MV_COMMON_FLAGS | MV_FLAG_DUAL_HC, |
31961943 | 619 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 620 | .udma_mask = ATA_UDMA6, |
c9d39130 | 621 | .port_ops = &mv5_ops, |
20f733e7 | 622 | }, |
47c2b677 | 623 | { /* chip_5080 */ |
c5d3e45a | 624 | .flags = MV_COMMON_FLAGS | MV_FLAG_DUAL_HC, |
47c2b677 | 625 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 626 | .udma_mask = ATA_UDMA6, |
c9d39130 | 627 | .port_ops = &mv5_ops, |
47c2b677 | 628 | }, |
20f733e7 | 629 | { /* chip_604x */ |
138bfdd0 | 630 | .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS | |
e49856d8 | 631 | ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA | |
138bfdd0 | 632 | ATA_FLAG_NCQ, |
31961943 | 633 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 634 | .udma_mask = ATA_UDMA6, |
c9d39130 | 635 | .port_ops = &mv6_ops, |
20f733e7 BR |
636 | }, |
637 | { /* chip_608x */ | |
c5d3e45a | 638 | .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS | |
e49856d8 | 639 | ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA | |
138bfdd0 | 640 | ATA_FLAG_NCQ | MV_FLAG_DUAL_HC, |
31961943 | 641 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 642 | .udma_mask = ATA_UDMA6, |
c9d39130 | 643 | .port_ops = &mv6_ops, |
20f733e7 | 644 | }, |
e4e7b892 | 645 | { /* chip_6042 */ |
ad3aef51 | 646 | .flags = MV_GENIIE_FLAGS, |
e4e7b892 | 647 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 648 | .udma_mask = ATA_UDMA6, |
e4e7b892 JG |
649 | .port_ops = &mv_iie_ops, |
650 | }, | |
651 | { /* chip_7042 */ | |
ad3aef51 | 652 | .flags = MV_GENIIE_FLAGS, |
e4e7b892 | 653 | .pio_mask = 0x1f, /* pio0-4 */ |
bf6263a8 | 654 | .udma_mask = ATA_UDMA6, |
e4e7b892 JG |
655 | .port_ops = &mv_iie_ops, |
656 | }, | |
f351b2d6 | 657 | { /* chip_soc */ |
1f398472 | 658 | .flags = MV_GENIIE_FLAGS, |
17c5aab5 ML |
659 | .pio_mask = 0x1f, /* pio0-4 */ |
660 | .udma_mask = ATA_UDMA6, | |
661 | .port_ops = &mv_iie_ops, | |
f351b2d6 | 662 | }, |
20f733e7 BR |
663 | }; |
664 | ||
3b7d697d | 665 | static const struct pci_device_id mv_pci_tbl[] = { |
2d2744fc JG |
666 | { PCI_VDEVICE(MARVELL, 0x5040), chip_504x }, |
667 | { PCI_VDEVICE(MARVELL, 0x5041), chip_504x }, | |
668 | { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 }, | |
669 | { PCI_VDEVICE(MARVELL, 0x5081), chip_508x }, | |
cfbf723e AC |
670 | /* RocketRAID 1740/174x have different identifiers */ |
671 | { PCI_VDEVICE(TTI, 0x1740), chip_508x }, | |
672 | { PCI_VDEVICE(TTI, 0x1742), chip_508x }, | |
2d2744fc JG |
673 | |
674 | { PCI_VDEVICE(MARVELL, 0x6040), chip_604x }, | |
675 | { PCI_VDEVICE(MARVELL, 0x6041), chip_604x }, | |
676 | { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 }, | |
677 | { PCI_VDEVICE(MARVELL, 0x6080), chip_608x }, | |
678 | { PCI_VDEVICE(MARVELL, 0x6081), chip_608x }, | |
679 | ||
680 | { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x }, | |
681 | ||
d9f9c6bc FA |
682 | /* Adaptec 1430SA */ |
683 | { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 }, | |
684 | ||
02a121da | 685 | /* Marvell 7042 support */ |
6a3d586d MT |
686 | { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 }, |
687 | ||
02a121da ML |
688 | /* Highpoint RocketRAID PCIe series */ |
689 | { PCI_VDEVICE(TTI, 0x2300), chip_7042 }, | |
690 | { PCI_VDEVICE(TTI, 0x2310), chip_7042 }, | |
691 | ||
2d2744fc | 692 | { } /* terminate list */ |
20f733e7 BR |
693 | }; |
694 | ||
47c2b677 JG |
695 | static const struct mv_hw_ops mv5xxx_ops = { |
696 | .phy_errata = mv5_phy_errata, | |
697 | .enable_leds = mv5_enable_leds, | |
698 | .read_preamp = mv5_read_preamp, | |
699 | .reset_hc = mv5_reset_hc, | |
522479fb JG |
700 | .reset_flash = mv5_reset_flash, |
701 | .reset_bus = mv5_reset_bus, | |
47c2b677 JG |
702 | }; |
703 | ||
704 | static const struct mv_hw_ops mv6xxx_ops = { | |
705 | .phy_errata = mv6_phy_errata, | |
706 | .enable_leds = mv6_enable_leds, | |
707 | .read_preamp = mv6_read_preamp, | |
708 | .reset_hc = mv6_reset_hc, | |
522479fb JG |
709 | .reset_flash = mv6_reset_flash, |
710 | .reset_bus = mv_reset_pci_bus, | |
47c2b677 JG |
711 | }; |
712 | ||
f351b2d6 SB |
713 | static const struct mv_hw_ops mv_soc_ops = { |
714 | .phy_errata = mv6_phy_errata, | |
715 | .enable_leds = mv_soc_enable_leds, | |
716 | .read_preamp = mv_soc_read_preamp, | |
717 | .reset_hc = mv_soc_reset_hc, | |
718 | .reset_flash = mv_soc_reset_flash, | |
719 | .reset_bus = mv_soc_reset_bus, | |
720 | }; | |
721 | ||
20f733e7 BR |
722 | /* |
723 | * Functions | |
724 | */ | |
725 | ||
726 | static inline void writelfl(unsigned long data, void __iomem *addr) | |
727 | { | |
728 | writel(data, addr); | |
729 | (void) readl(addr); /* flush to avoid PCI posted write */ | |
730 | } | |
731 | ||
c9d39130 JG |
732 | static inline unsigned int mv_hc_from_port(unsigned int port) |
733 | { | |
734 | return port >> MV_PORT_HC_SHIFT; | |
735 | } | |
736 | ||
737 | static inline unsigned int mv_hardport_from_port(unsigned int port) | |
738 | { | |
739 | return port & MV_PORT_MASK; | |
740 | } | |
741 | ||
1cfd19ae ML |
742 | /* |
743 | * Consolidate some rather tricky bit shift calculations. | |
744 | * This is hot-path stuff, so not a function. | |
745 | * Simple code, with two return values, so macro rather than inline. | |
746 | * | |
747 | * port is the sole input, in range 0..7. | |
7368f919 ML |
748 | * shift is one output, for use with main_irq_cause / main_irq_mask registers. |
749 | * hardport is the other output, in range 0..3. | |
1cfd19ae ML |
750 | * |
751 | * Note that port and hardport may be the same variable in some cases. | |
752 | */ | |
753 | #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \ | |
754 | { \ | |
755 | shift = mv_hc_from_port(port) * HC_SHIFT; \ | |
756 | hardport = mv_hardport_from_port(port); \ | |
757 | shift += hardport * 2; \ | |
758 | } | |
759 | ||
352fab70 ML |
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 void __iomem *mv_hc_base_from_port(void __iomem *base, |
766 | unsigned int port) | |
767 | { | |
768 | return mv_hc_base(base, mv_hc_from_port(port)); | |
769 | } | |
770 | ||
20f733e7 BR |
771 | static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port) |
772 | { | |
c9d39130 | 773 | return mv_hc_base_from_port(base, port) + |
8b260248 | 774 | MV_SATAHC_ARBTR_REG_SZ + |
c9d39130 | 775 | (mv_hardport_from_port(port) * MV_PORT_REG_SZ); |
20f733e7 BR |
776 | } |
777 | ||
e12bef50 ML |
778 | static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port) |
779 | { | |
780 | void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port); | |
781 | unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL; | |
782 | ||
783 | return hc_mmio + ofs; | |
784 | } | |
785 | ||
f351b2d6 SB |
786 | static inline void __iomem *mv_host_base(struct ata_host *host) |
787 | { | |
788 | struct mv_host_priv *hpriv = host->private_data; | |
789 | return hpriv->base; | |
790 | } | |
791 | ||
20f733e7 BR |
792 | static inline void __iomem *mv_ap_base(struct ata_port *ap) |
793 | { | |
f351b2d6 | 794 | return mv_port_base(mv_host_base(ap->host), ap->port_no); |
20f733e7 BR |
795 | } |
796 | ||
cca3974e | 797 | static inline int mv_get_hc_count(unsigned long port_flags) |
31961943 | 798 | { |
cca3974e | 799 | return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1); |
31961943 BR |
800 | } |
801 | ||
c5d3e45a JG |
802 | static void mv_set_edma_ptrs(void __iomem *port_mmio, |
803 | struct mv_host_priv *hpriv, | |
804 | struct mv_port_priv *pp) | |
805 | { | |
bdd4ddde JG |
806 | u32 index; |
807 | ||
c5d3e45a JG |
808 | /* |
809 | * initialize request queue | |
810 | */ | |
fcfb1f77 ML |
811 | pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ |
812 | index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; | |
bdd4ddde | 813 | |
c5d3e45a JG |
814 | WARN_ON(pp->crqb_dma & 0x3ff); |
815 | writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS); | |
bdd4ddde | 816 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index, |
c5d3e45a | 817 | port_mmio + EDMA_REQ_Q_IN_PTR_OFS); |
5cf73bfb | 818 | writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS); |
c5d3e45a JG |
819 | |
820 | /* | |
821 | * initialize response queue | |
822 | */ | |
fcfb1f77 ML |
823 | pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ |
824 | index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT; | |
bdd4ddde | 825 | |
c5d3e45a JG |
826 | WARN_ON(pp->crpb_dma & 0xff); |
827 | writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS); | |
5cf73bfb | 828 | writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS); |
bdd4ddde | 829 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index, |
c5d3e45a | 830 | port_mmio + EDMA_RSP_Q_OUT_PTR_OFS); |
c5d3e45a JG |
831 | } |
832 | ||
c4de573b ML |
833 | static void mv_set_main_irq_mask(struct ata_host *host, |
834 | u32 disable_bits, u32 enable_bits) | |
835 | { | |
836 | struct mv_host_priv *hpriv = host->private_data; | |
837 | u32 old_mask, new_mask; | |
838 | ||
96e2c487 | 839 | old_mask = hpriv->main_irq_mask; |
c4de573b | 840 | new_mask = (old_mask & ~disable_bits) | enable_bits; |
96e2c487 ML |
841 | if (new_mask != old_mask) { |
842 | hpriv->main_irq_mask = new_mask; | |
c4de573b | 843 | writelfl(new_mask, hpriv->main_irq_mask_addr); |
96e2c487 | 844 | } |
c4de573b ML |
845 | } |
846 | ||
847 | static void mv_enable_port_irqs(struct ata_port *ap, | |
848 | unsigned int port_bits) | |
849 | { | |
850 | unsigned int shift, hardport, port = ap->port_no; | |
851 | u32 disable_bits, enable_bits; | |
852 | ||
853 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); | |
854 | ||
855 | disable_bits = (DONE_IRQ | ERR_IRQ) << shift; | |
856 | enable_bits = port_bits << shift; | |
857 | mv_set_main_irq_mask(ap->host, disable_bits, enable_bits); | |
858 | } | |
859 | ||
05b308e1 BR |
860 | /** |
861 | * mv_start_dma - Enable eDMA engine | |
862 | * @base: port base address | |
863 | * @pp: port private data | |
864 | * | |
beec7dbc TH |
865 | * Verify the local cache of the eDMA state is accurate with a |
866 | * WARN_ON. | |
05b308e1 BR |
867 | * |
868 | * LOCKING: | |
869 | * Inherited from caller. | |
870 | */ | |
0c58912e | 871 | static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio, |
72109168 | 872 | struct mv_port_priv *pp, u8 protocol) |
20f733e7 | 873 | { |
72109168 ML |
874 | int want_ncq = (protocol == ATA_PROT_NCQ); |
875 | ||
876 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { | |
877 | int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0); | |
878 | if (want_ncq != using_ncq) | |
b562468c | 879 | mv_stop_edma(ap); |
72109168 | 880 | } |
c5d3e45a | 881 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) { |
0c58912e | 882 | struct mv_host_priv *hpriv = ap->host->private_data; |
352fab70 | 883 | int hardport = mv_hardport_from_port(ap->port_no); |
0c58912e | 884 | void __iomem *hc_mmio = mv_hc_base_from_port( |
352fab70 | 885 | mv_host_base(ap->host), hardport); |
0c58912e ML |
886 | u32 hc_irq_cause, ipending; |
887 | ||
bdd4ddde | 888 | /* clear EDMA event indicators, if any */ |
f630d562 | 889 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
bdd4ddde | 890 | |
0c58912e ML |
891 | /* clear EDMA interrupt indicator, if any */ |
892 | hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS); | |
352fab70 | 893 | ipending = (DEV_IRQ | DMA_IRQ) << hardport; |
0c58912e ML |
894 | if (hc_irq_cause & ipending) { |
895 | writelfl(hc_irq_cause & ~ipending, | |
896 | hc_mmio + HC_IRQ_CAUSE_OFS); | |
897 | } | |
898 | ||
e12bef50 | 899 | mv_edma_cfg(ap, want_ncq); |
0c58912e ML |
900 | |
901 | /* clear FIS IRQ Cause */ | |
e4006077 ML |
902 | if (IS_GEN_IIE(hpriv)) |
903 | writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS); | |
0c58912e | 904 | |
f630d562 | 905 | mv_set_edma_ptrs(port_mmio, hpriv, pp); |
88e675e1 | 906 | mv_enable_port_irqs(ap, DONE_IRQ|ERR_IRQ); |
bdd4ddde | 907 | |
f630d562 | 908 | writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS); |
afb0edd9 BR |
909 | pp->pp_flags |= MV_PP_FLAG_EDMA_EN; |
910 | } | |
20f733e7 BR |
911 | } |
912 | ||
9b2c4e0b ML |
913 | static void mv_wait_for_edma_empty_idle(struct ata_port *ap) |
914 | { | |
915 | void __iomem *port_mmio = mv_ap_base(ap); | |
916 | const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE); | |
917 | const int per_loop = 5, timeout = (15 * 1000 / per_loop); | |
918 | int i; | |
919 | ||
920 | /* | |
921 | * Wait for the EDMA engine to finish transactions in progress. | |
c46938cc ML |
922 | * No idea what a good "timeout" value might be, but measurements |
923 | * indicate that it often requires hundreds of microseconds | |
924 | * with two drives in-use. So we use the 15msec value above | |
925 | * as a rough guess at what even more drives might require. | |
9b2c4e0b ML |
926 | */ |
927 | for (i = 0; i < timeout; ++i) { | |
928 | u32 edma_stat = readl(port_mmio + EDMA_STATUS_OFS); | |
929 | if ((edma_stat & empty_idle) == empty_idle) | |
930 | break; | |
931 | udelay(per_loop); | |
932 | } | |
933 | /* ata_port_printk(ap, KERN_INFO, "%s: %u+ usecs\n", __func__, i); */ | |
934 | } | |
935 | ||
05b308e1 | 936 | /** |
e12bef50 | 937 | * mv_stop_edma_engine - Disable eDMA engine |
b562468c | 938 | * @port_mmio: io base address |
05b308e1 BR |
939 | * |
940 | * LOCKING: | |
941 | * Inherited from caller. | |
942 | */ | |
b562468c | 943 | static int mv_stop_edma_engine(void __iomem *port_mmio) |
20f733e7 | 944 | { |
b562468c | 945 | int i; |
31961943 | 946 | |
b562468c ML |
947 | /* Disable eDMA. The disable bit auto clears. */ |
948 | writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS); | |
8b260248 | 949 | |
b562468c ML |
950 | /* Wait for the chip to confirm eDMA is off. */ |
951 | for (i = 10000; i > 0; i--) { | |
952 | u32 reg = readl(port_mmio + EDMA_CMD_OFS); | |
4537deb5 | 953 | if (!(reg & EDMA_EN)) |
b562468c ML |
954 | return 0; |
955 | udelay(10); | |
31961943 | 956 | } |
b562468c | 957 | return -EIO; |
20f733e7 BR |
958 | } |
959 | ||
e12bef50 | 960 | static int mv_stop_edma(struct ata_port *ap) |
0ea9e179 | 961 | { |
b562468c ML |
962 | void __iomem *port_mmio = mv_ap_base(ap); |
963 | struct mv_port_priv *pp = ap->private_data; | |
0ea9e179 | 964 | |
b562468c ML |
965 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) |
966 | return 0; | |
967 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; | |
9b2c4e0b | 968 | mv_wait_for_edma_empty_idle(ap); |
b562468c ML |
969 | if (mv_stop_edma_engine(port_mmio)) { |
970 | ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n"); | |
971 | return -EIO; | |
972 | } | |
973 | return 0; | |
0ea9e179 JG |
974 | } |
975 | ||
8a70f8dc | 976 | #ifdef ATA_DEBUG |
31961943 | 977 | static void mv_dump_mem(void __iomem *start, unsigned bytes) |
20f733e7 | 978 | { |
31961943 BR |
979 | int b, w; |
980 | for (b = 0; b < bytes; ) { | |
981 | DPRINTK("%p: ", start + b); | |
982 | for (w = 0; b < bytes && w < 4; w++) { | |
2dcb407e | 983 | printk("%08x ", readl(start + b)); |
31961943 BR |
984 | b += sizeof(u32); |
985 | } | |
986 | printk("\n"); | |
987 | } | |
31961943 | 988 | } |
8a70f8dc JG |
989 | #endif |
990 | ||
31961943 BR |
991 | static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes) |
992 | { | |
993 | #ifdef ATA_DEBUG | |
994 | int b, w; | |
995 | u32 dw; | |
996 | for (b = 0; b < bytes; ) { | |
997 | DPRINTK("%02x: ", b); | |
998 | for (w = 0; b < bytes && w < 4; w++) { | |
2dcb407e JG |
999 | (void) pci_read_config_dword(pdev, b, &dw); |
1000 | printk("%08x ", dw); | |
31961943 BR |
1001 | b += sizeof(u32); |
1002 | } | |
1003 | printk("\n"); | |
1004 | } | |
1005 | #endif | |
1006 | } | |
1007 | static void mv_dump_all_regs(void __iomem *mmio_base, int port, | |
1008 | struct pci_dev *pdev) | |
1009 | { | |
1010 | #ifdef ATA_DEBUG | |
8b260248 | 1011 | void __iomem *hc_base = mv_hc_base(mmio_base, |
31961943 BR |
1012 | port >> MV_PORT_HC_SHIFT); |
1013 | void __iomem *port_base; | |
1014 | int start_port, num_ports, p, start_hc, num_hcs, hc; | |
1015 | ||
1016 | if (0 > port) { | |
1017 | start_hc = start_port = 0; | |
1018 | num_ports = 8; /* shld be benign for 4 port devs */ | |
1019 | num_hcs = 2; | |
1020 | } else { | |
1021 | start_hc = port >> MV_PORT_HC_SHIFT; | |
1022 | start_port = port; | |
1023 | num_ports = num_hcs = 1; | |
1024 | } | |
8b260248 | 1025 | DPRINTK("All registers for port(s) %u-%u:\n", start_port, |
31961943 BR |
1026 | num_ports > 1 ? num_ports - 1 : start_port); |
1027 | ||
1028 | if (NULL != pdev) { | |
1029 | DPRINTK("PCI config space regs:\n"); | |
1030 | mv_dump_pci_cfg(pdev, 0x68); | |
1031 | } | |
1032 | DPRINTK("PCI regs:\n"); | |
1033 | mv_dump_mem(mmio_base+0xc00, 0x3c); | |
1034 | mv_dump_mem(mmio_base+0xd00, 0x34); | |
1035 | mv_dump_mem(mmio_base+0xf00, 0x4); | |
1036 | mv_dump_mem(mmio_base+0x1d00, 0x6c); | |
1037 | for (hc = start_hc; hc < start_hc + num_hcs; hc++) { | |
d220c37e | 1038 | hc_base = mv_hc_base(mmio_base, hc); |
31961943 BR |
1039 | DPRINTK("HC regs (HC %i):\n", hc); |
1040 | mv_dump_mem(hc_base, 0x1c); | |
1041 | } | |
1042 | for (p = start_port; p < start_port + num_ports; p++) { | |
1043 | port_base = mv_port_base(mmio_base, p); | |
2dcb407e | 1044 | DPRINTK("EDMA regs (port %i):\n", p); |
31961943 | 1045 | mv_dump_mem(port_base, 0x54); |
2dcb407e | 1046 | DPRINTK("SATA regs (port %i):\n", p); |
31961943 BR |
1047 | mv_dump_mem(port_base+0x300, 0x60); |
1048 | } | |
1049 | #endif | |
20f733e7 BR |
1050 | } |
1051 | ||
1052 | static unsigned int mv_scr_offset(unsigned int sc_reg_in) | |
1053 | { | |
1054 | unsigned int ofs; | |
1055 | ||
1056 | switch (sc_reg_in) { | |
1057 | case SCR_STATUS: | |
1058 | case SCR_CONTROL: | |
1059 | case SCR_ERROR: | |
1060 | ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32)); | |
1061 | break; | |
1062 | case SCR_ACTIVE: | |
1063 | ofs = SATA_ACTIVE_OFS; /* active is not with the others */ | |
1064 | break; | |
1065 | default: | |
1066 | ofs = 0xffffffffU; | |
1067 | break; | |
1068 | } | |
1069 | return ofs; | |
1070 | } | |
1071 | ||
da3dbb17 | 1072 | static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val) |
20f733e7 BR |
1073 | { |
1074 | unsigned int ofs = mv_scr_offset(sc_reg_in); | |
1075 | ||
da3dbb17 TH |
1076 | if (ofs != 0xffffffffU) { |
1077 | *val = readl(mv_ap_base(ap) + ofs); | |
1078 | return 0; | |
1079 | } else | |
1080 | return -EINVAL; | |
20f733e7 BR |
1081 | } |
1082 | ||
da3dbb17 | 1083 | static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val) |
20f733e7 BR |
1084 | { |
1085 | unsigned int ofs = mv_scr_offset(sc_reg_in); | |
1086 | ||
da3dbb17 | 1087 | if (ofs != 0xffffffffU) { |
20f733e7 | 1088 | writelfl(val, mv_ap_base(ap) + ofs); |
da3dbb17 TH |
1089 | return 0; |
1090 | } else | |
1091 | return -EINVAL; | |
20f733e7 BR |
1092 | } |
1093 | ||
f273827e ML |
1094 | static void mv6_dev_config(struct ata_device *adev) |
1095 | { | |
1096 | /* | |
e49856d8 ML |
1097 | * Deal with Gen-II ("mv6") hardware quirks/restrictions: |
1098 | * | |
1099 | * Gen-II does not support NCQ over a port multiplier | |
1100 | * (no FIS-based switching). | |
1101 | * | |
f273827e ML |
1102 | * We don't have hob_nsect when doing NCQ commands on Gen-II. |
1103 | * See mv_qc_prep() for more info. | |
1104 | */ | |
e49856d8 | 1105 | if (adev->flags & ATA_DFLAG_NCQ) { |
352fab70 | 1106 | if (sata_pmp_attached(adev->link->ap)) { |
e49856d8 | 1107 | adev->flags &= ~ATA_DFLAG_NCQ; |
352fab70 ML |
1108 | ata_dev_printk(adev, KERN_INFO, |
1109 | "NCQ disabled for command-based switching\n"); | |
1110 | } else if (adev->max_sectors > GEN_II_NCQ_MAX_SECTORS) { | |
1111 | adev->max_sectors = GEN_II_NCQ_MAX_SECTORS; | |
1112 | ata_dev_printk(adev, KERN_INFO, | |
1113 | "max_sectors limited to %u for NCQ\n", | |
1114 | adev->max_sectors); | |
1115 | } | |
e49856d8 | 1116 | } |
f273827e ML |
1117 | } |
1118 | ||
3e4a1391 ML |
1119 | static int mv_qc_defer(struct ata_queued_cmd *qc) |
1120 | { | |
1121 | struct ata_link *link = qc->dev->link; | |
1122 | struct ata_port *ap = link->ap; | |
1123 | struct mv_port_priv *pp = ap->private_data; | |
1124 | ||
29d187bb ML |
1125 | /* |
1126 | * Don't allow new commands if we're in a delayed EH state | |
1127 | * for NCQ and/or FIS-based switching. | |
1128 | */ | |
1129 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) | |
1130 | return ATA_DEFER_PORT; | |
3e4a1391 ML |
1131 | /* |
1132 | * If the port is completely idle, then allow the new qc. | |
1133 | */ | |
1134 | if (ap->nr_active_links == 0) | |
1135 | return 0; | |
1136 | ||
1137 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { | |
1138 | /* | |
1139 | * The port is operating in host queuing mode (EDMA). | |
1140 | * It can accomodate a new qc if the qc protocol | |
1141 | * is compatible with the current host queue mode. | |
1142 | */ | |
1143 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) { | |
1144 | /* | |
1145 | * The host queue (EDMA) is in NCQ mode. | |
1146 | * If the new qc is also an NCQ command, | |
1147 | * then allow the new qc. | |
1148 | */ | |
1149 | if (qc->tf.protocol == ATA_PROT_NCQ) | |
1150 | return 0; | |
1151 | } else { | |
1152 | /* | |
1153 | * The host queue (EDMA) is in non-NCQ, DMA mode. | |
1154 | * If the new qc is also a non-NCQ, DMA command, | |
1155 | * then allow the new qc. | |
1156 | */ | |
1157 | if (qc->tf.protocol == ATA_PROT_DMA) | |
1158 | return 0; | |
1159 | } | |
1160 | } | |
1161 | return ATA_DEFER_PORT; | |
1162 | } | |
1163 | ||
00f42eab | 1164 | static void mv_config_fbs(void __iomem *port_mmio, int want_ncq, int want_fbs) |
e49856d8 | 1165 | { |
00f42eab ML |
1166 | u32 new_fiscfg, old_fiscfg; |
1167 | u32 new_ltmode, old_ltmode; | |
1168 | u32 new_haltcond, old_haltcond; | |
1169 | ||
1170 | old_fiscfg = readl(port_mmio + FISCFG_OFS); | |
1171 | old_ltmode = readl(port_mmio + LTMODE_OFS); | |
1172 | old_haltcond = readl(port_mmio + EDMA_HALTCOND_OFS); | |
1173 | ||
1174 | new_fiscfg = old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR); | |
1175 | new_ltmode = old_ltmode & ~LTMODE_BIT8; | |
1176 | new_haltcond = old_haltcond | EDMA_ERR_DEV; | |
1177 | ||
1178 | if (want_fbs) { | |
1179 | new_fiscfg = old_fiscfg | FISCFG_SINGLE_SYNC; | |
1180 | new_ltmode = old_ltmode | LTMODE_BIT8; | |
4c299ca3 ML |
1181 | if (want_ncq) |
1182 | new_haltcond &= ~EDMA_ERR_DEV; | |
1183 | else | |
1184 | new_fiscfg |= FISCFG_WAIT_DEV_ERR; | |
e49856d8 | 1185 | } |
00f42eab | 1186 | |
8e7decdb ML |
1187 | if (new_fiscfg != old_fiscfg) |
1188 | writelfl(new_fiscfg, port_mmio + FISCFG_OFS); | |
e49856d8 ML |
1189 | if (new_ltmode != old_ltmode) |
1190 | writelfl(new_ltmode, port_mmio + LTMODE_OFS); | |
00f42eab ML |
1191 | if (new_haltcond != old_haltcond) |
1192 | writelfl(new_haltcond, port_mmio + EDMA_HALTCOND_OFS); | |
f273827e ML |
1193 | } |
1194 | ||
dd2890f6 ML |
1195 | static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq) |
1196 | { | |
1197 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1198 | u32 old, new; | |
1199 | ||
1200 | /* workaround for 88SX60x1 FEr SATA#25 (part 1) */ | |
1201 | old = readl(hpriv->base + MV_GPIO_PORT_CTL_OFS); | |
1202 | if (want_ncq) | |
1203 | new = old | (1 << 22); | |
1204 | else | |
1205 | new = old & ~(1 << 22); | |
1206 | if (new != old) | |
1207 | writel(new, hpriv->base + MV_GPIO_PORT_CTL_OFS); | |
1208 | } | |
1209 | ||
e12bef50 | 1210 | static void mv_edma_cfg(struct ata_port *ap, int want_ncq) |
e4e7b892 | 1211 | { |
0c58912e | 1212 | u32 cfg; |
e12bef50 ML |
1213 | struct mv_port_priv *pp = ap->private_data; |
1214 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1215 | void __iomem *port_mmio = mv_ap_base(ap); | |
e4e7b892 JG |
1216 | |
1217 | /* set up non-NCQ EDMA configuration */ | |
0c58912e | 1218 | cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */ |
00f42eab | 1219 | pp->pp_flags &= ~MV_PP_FLAG_FBS_EN; |
e4e7b892 | 1220 | |
0c58912e | 1221 | if (IS_GEN_I(hpriv)) |
e4e7b892 JG |
1222 | cfg |= (1 << 8); /* enab config burst size mask */ |
1223 | ||
dd2890f6 | 1224 | else if (IS_GEN_II(hpriv)) { |
e4e7b892 | 1225 | cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN; |
dd2890f6 | 1226 | mv_60x1_errata_sata25(ap, want_ncq); |
e4e7b892 | 1227 | |
dd2890f6 | 1228 | } else if (IS_GEN_IIE(hpriv)) { |
00f42eab ML |
1229 | int want_fbs = sata_pmp_attached(ap); |
1230 | /* | |
1231 | * Possible future enhancement: | |
1232 | * | |
1233 | * The chip can use FBS with non-NCQ, if we allow it, | |
1234 | * But first we need to have the error handling in place | |
1235 | * for this mode (datasheet section 7.3.15.4.2.3). | |
1236 | * So disallow non-NCQ FBS for now. | |
1237 | */ | |
1238 | want_fbs &= want_ncq; | |
1239 | ||
1240 | mv_config_fbs(port_mmio, want_ncq, want_fbs); | |
1241 | ||
1242 | if (want_fbs) { | |
1243 | pp->pp_flags |= MV_PP_FLAG_FBS_EN; | |
1244 | cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */ | |
1245 | } | |
1246 | ||
e728eabe JG |
1247 | cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */ |
1248 | cfg |= (1 << 22); /* enab 4-entry host queue cache */ | |
1f398472 | 1249 | if (!IS_SOC(hpriv)) |
616d4a98 ML |
1250 | cfg |= (1 << 18); /* enab early completion */ |
1251 | if (hpriv->hp_flags & MV_HP_CUT_THROUGH) | |
1252 | cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */ | |
e4e7b892 JG |
1253 | } |
1254 | ||
72109168 ML |
1255 | if (want_ncq) { |
1256 | cfg |= EDMA_CFG_NCQ; | |
1257 | pp->pp_flags |= MV_PP_FLAG_NCQ_EN; | |
1258 | } else | |
1259 | pp->pp_flags &= ~MV_PP_FLAG_NCQ_EN; | |
1260 | ||
e4e7b892 JG |
1261 | writelfl(cfg, port_mmio + EDMA_CFG_OFS); |
1262 | } | |
1263 | ||
da2fa9ba ML |
1264 | static void mv_port_free_dma_mem(struct ata_port *ap) |
1265 | { | |
1266 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1267 | struct mv_port_priv *pp = ap->private_data; | |
eb73d558 | 1268 | int tag; |
da2fa9ba ML |
1269 | |
1270 | if (pp->crqb) { | |
1271 | dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma); | |
1272 | pp->crqb = NULL; | |
1273 | } | |
1274 | if (pp->crpb) { | |
1275 | dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma); | |
1276 | pp->crpb = NULL; | |
1277 | } | |
eb73d558 ML |
1278 | /* |
1279 | * For GEN_I, there's no NCQ, so we have only a single sg_tbl. | |
1280 | * For later hardware, we have one unique sg_tbl per NCQ tag. | |
1281 | */ | |
1282 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { | |
1283 | if (pp->sg_tbl[tag]) { | |
1284 | if (tag == 0 || !IS_GEN_I(hpriv)) | |
1285 | dma_pool_free(hpriv->sg_tbl_pool, | |
1286 | pp->sg_tbl[tag], | |
1287 | pp->sg_tbl_dma[tag]); | |
1288 | pp->sg_tbl[tag] = NULL; | |
1289 | } | |
da2fa9ba ML |
1290 | } |
1291 | } | |
1292 | ||
05b308e1 BR |
1293 | /** |
1294 | * mv_port_start - Port specific init/start routine. | |
1295 | * @ap: ATA channel to manipulate | |
1296 | * | |
1297 | * Allocate and point to DMA memory, init port private memory, | |
1298 | * zero indices. | |
1299 | * | |
1300 | * LOCKING: | |
1301 | * Inherited from caller. | |
1302 | */ | |
31961943 BR |
1303 | static int mv_port_start(struct ata_port *ap) |
1304 | { | |
cca3974e JG |
1305 | struct device *dev = ap->host->dev; |
1306 | struct mv_host_priv *hpriv = ap->host->private_data; | |
31961943 | 1307 | struct mv_port_priv *pp; |
dde20207 | 1308 | int tag; |
31961943 | 1309 | |
24dc5f33 | 1310 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
6037d6bb | 1311 | if (!pp) |
24dc5f33 | 1312 | return -ENOMEM; |
da2fa9ba | 1313 | ap->private_data = pp; |
31961943 | 1314 | |
da2fa9ba ML |
1315 | pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma); |
1316 | if (!pp->crqb) | |
1317 | return -ENOMEM; | |
1318 | memset(pp->crqb, 0, MV_CRQB_Q_SZ); | |
31961943 | 1319 | |
da2fa9ba ML |
1320 | pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma); |
1321 | if (!pp->crpb) | |
1322 | goto out_port_free_dma_mem; | |
1323 | memset(pp->crpb, 0, MV_CRPB_Q_SZ); | |
31961943 | 1324 | |
3bd0a70e ML |
1325 | /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */ |
1326 | if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0) | |
1327 | ap->flags |= ATA_FLAG_AN; | |
eb73d558 ML |
1328 | /* |
1329 | * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl. | |
1330 | * For later hardware, we need one unique sg_tbl per NCQ tag. | |
1331 | */ | |
1332 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { | |
1333 | if (tag == 0 || !IS_GEN_I(hpriv)) { | |
1334 | pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool, | |
1335 | GFP_KERNEL, &pp->sg_tbl_dma[tag]); | |
1336 | if (!pp->sg_tbl[tag]) | |
1337 | goto out_port_free_dma_mem; | |
1338 | } else { | |
1339 | pp->sg_tbl[tag] = pp->sg_tbl[0]; | |
1340 | pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0]; | |
1341 | } | |
1342 | } | |
31961943 | 1343 | return 0; |
da2fa9ba ML |
1344 | |
1345 | out_port_free_dma_mem: | |
1346 | mv_port_free_dma_mem(ap); | |
1347 | return -ENOMEM; | |
31961943 BR |
1348 | } |
1349 | ||
05b308e1 BR |
1350 | /** |
1351 | * mv_port_stop - Port specific cleanup/stop routine. | |
1352 | * @ap: ATA channel to manipulate | |
1353 | * | |
1354 | * Stop DMA, cleanup port memory. | |
1355 | * | |
1356 | * LOCKING: | |
cca3974e | 1357 | * This routine uses the host lock to protect the DMA stop. |
05b308e1 | 1358 | */ |
31961943 BR |
1359 | static void mv_port_stop(struct ata_port *ap) |
1360 | { | |
e12bef50 | 1361 | mv_stop_edma(ap); |
88e675e1 | 1362 | mv_enable_port_irqs(ap, 0); |
da2fa9ba | 1363 | mv_port_free_dma_mem(ap); |
31961943 BR |
1364 | } |
1365 | ||
05b308e1 BR |
1366 | /** |
1367 | * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries | |
1368 | * @qc: queued command whose SG list to source from | |
1369 | * | |
1370 | * Populate the SG list and mark the last entry. | |
1371 | * | |
1372 | * LOCKING: | |
1373 | * Inherited from caller. | |
1374 | */ | |
6c08772e | 1375 | static void mv_fill_sg(struct ata_queued_cmd *qc) |
31961943 BR |
1376 | { |
1377 | struct mv_port_priv *pp = qc->ap->private_data; | |
972c26bd | 1378 | struct scatterlist *sg; |
3be6cbd7 | 1379 | struct mv_sg *mv_sg, *last_sg = NULL; |
ff2aeb1e | 1380 | unsigned int si; |
31961943 | 1381 | |
eb73d558 | 1382 | mv_sg = pp->sg_tbl[qc->tag]; |
ff2aeb1e | 1383 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
d88184fb JG |
1384 | dma_addr_t addr = sg_dma_address(sg); |
1385 | u32 sg_len = sg_dma_len(sg); | |
22374677 | 1386 | |
4007b493 OJ |
1387 | while (sg_len) { |
1388 | u32 offset = addr & 0xffff; | |
1389 | u32 len = sg_len; | |
22374677 | 1390 | |
4007b493 OJ |
1391 | if ((offset + sg_len > 0x10000)) |
1392 | len = 0x10000 - offset; | |
1393 | ||
1394 | mv_sg->addr = cpu_to_le32(addr & 0xffffffff); | |
1395 | mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); | |
6c08772e | 1396 | mv_sg->flags_size = cpu_to_le32(len & 0xffff); |
4007b493 OJ |
1397 | |
1398 | sg_len -= len; | |
1399 | addr += len; | |
1400 | ||
3be6cbd7 | 1401 | last_sg = mv_sg; |
4007b493 | 1402 | mv_sg++; |
4007b493 | 1403 | } |
31961943 | 1404 | } |
3be6cbd7 JG |
1405 | |
1406 | if (likely(last_sg)) | |
1407 | last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL); | |
31961943 BR |
1408 | } |
1409 | ||
5796d1c4 | 1410 | static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last) |
31961943 | 1411 | { |
559eedad | 1412 | u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS | |
31961943 | 1413 | (last ? CRQB_CMD_LAST : 0); |
559eedad | 1414 | *cmdw = cpu_to_le16(tmp); |
31961943 BR |
1415 | } |
1416 | ||
05b308e1 BR |
1417 | /** |
1418 | * mv_qc_prep - Host specific command preparation. | |
1419 | * @qc: queued command to prepare | |
1420 | * | |
1421 | * This routine simply redirects to the general purpose routine | |
1422 | * if command is not DMA. Else, it handles prep of the CRQB | |
1423 | * (command request block), does some sanity checking, and calls | |
1424 | * the SG load routine. | |
1425 | * | |
1426 | * LOCKING: | |
1427 | * Inherited from caller. | |
1428 | */ | |
31961943 BR |
1429 | static void mv_qc_prep(struct ata_queued_cmd *qc) |
1430 | { | |
1431 | struct ata_port *ap = qc->ap; | |
1432 | struct mv_port_priv *pp = ap->private_data; | |
e1469874 | 1433 | __le16 *cw; |
31961943 BR |
1434 | struct ata_taskfile *tf; |
1435 | u16 flags = 0; | |
a6432436 | 1436 | unsigned in_index; |
31961943 | 1437 | |
138bfdd0 ML |
1438 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
1439 | (qc->tf.protocol != ATA_PROT_NCQ)) | |
31961943 | 1440 | return; |
20f733e7 | 1441 | |
31961943 BR |
1442 | /* Fill in command request block |
1443 | */ | |
e4e7b892 | 1444 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) |
31961943 | 1445 | flags |= CRQB_FLAG_READ; |
beec7dbc | 1446 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); |
31961943 | 1447 | flags |= qc->tag << CRQB_TAG_SHIFT; |
e49856d8 | 1448 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; |
31961943 | 1449 | |
bdd4ddde | 1450 | /* get current queue index from software */ |
fcfb1f77 | 1451 | in_index = pp->req_idx; |
a6432436 ML |
1452 | |
1453 | pp->crqb[in_index].sg_addr = | |
eb73d558 | 1454 | cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); |
a6432436 | 1455 | pp->crqb[in_index].sg_addr_hi = |
eb73d558 | 1456 | cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); |
a6432436 | 1457 | pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags); |
31961943 | 1458 | |
a6432436 | 1459 | cw = &pp->crqb[in_index].ata_cmd[0]; |
31961943 BR |
1460 | tf = &qc->tf; |
1461 | ||
1462 | /* Sadly, the CRQB cannot accomodate all registers--there are | |
1463 | * only 11 bytes...so we must pick and choose required | |
1464 | * registers based on the command. So, we drop feature and | |
1465 | * hob_feature for [RW] DMA commands, but they are needed for | |
1466 | * NCQ. NCQ will drop hob_nsect. | |
20f733e7 | 1467 | */ |
31961943 BR |
1468 | switch (tf->command) { |
1469 | case ATA_CMD_READ: | |
1470 | case ATA_CMD_READ_EXT: | |
1471 | case ATA_CMD_WRITE: | |
1472 | case ATA_CMD_WRITE_EXT: | |
c15d85c8 | 1473 | case ATA_CMD_WRITE_FUA_EXT: |
31961943 BR |
1474 | mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0); |
1475 | break; | |
31961943 BR |
1476 | case ATA_CMD_FPDMA_READ: |
1477 | case ATA_CMD_FPDMA_WRITE: | |
8b260248 | 1478 | mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0); |
31961943 BR |
1479 | mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0); |
1480 | break; | |
31961943 BR |
1481 | default: |
1482 | /* The only other commands EDMA supports in non-queued and | |
1483 | * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none | |
1484 | * of which are defined/used by Linux. If we get here, this | |
1485 | * driver needs work. | |
1486 | * | |
1487 | * FIXME: modify libata to give qc_prep a return value and | |
1488 | * return error here. | |
1489 | */ | |
1490 | BUG_ON(tf->command); | |
1491 | break; | |
1492 | } | |
1493 | mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0); | |
1494 | mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0); | |
1495 | mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0); | |
1496 | mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0); | |
1497 | mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0); | |
1498 | mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0); | |
1499 | mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0); | |
1500 | mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0); | |
1501 | mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */ | |
1502 | ||
e4e7b892 JG |
1503 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) |
1504 | return; | |
1505 | mv_fill_sg(qc); | |
1506 | } | |
1507 | ||
1508 | /** | |
1509 | * mv_qc_prep_iie - Host specific command preparation. | |
1510 | * @qc: queued command to prepare | |
1511 | * | |
1512 | * This routine simply redirects to the general purpose routine | |
1513 | * if command is not DMA. Else, it handles prep of the CRQB | |
1514 | * (command request block), does some sanity checking, and calls | |
1515 | * the SG load routine. | |
1516 | * | |
1517 | * LOCKING: | |
1518 | * Inherited from caller. | |
1519 | */ | |
1520 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc) | |
1521 | { | |
1522 | struct ata_port *ap = qc->ap; | |
1523 | struct mv_port_priv *pp = ap->private_data; | |
1524 | struct mv_crqb_iie *crqb; | |
1525 | struct ata_taskfile *tf; | |
a6432436 | 1526 | unsigned in_index; |
e4e7b892 JG |
1527 | u32 flags = 0; |
1528 | ||
138bfdd0 ML |
1529 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
1530 | (qc->tf.protocol != ATA_PROT_NCQ)) | |
e4e7b892 JG |
1531 | return; |
1532 | ||
e12bef50 | 1533 | /* Fill in Gen IIE command request block */ |
e4e7b892 JG |
1534 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) |
1535 | flags |= CRQB_FLAG_READ; | |
1536 | ||
beec7dbc | 1537 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); |
e4e7b892 | 1538 | flags |= qc->tag << CRQB_TAG_SHIFT; |
8c0aeb4a | 1539 | flags |= qc->tag << CRQB_HOSTQ_SHIFT; |
e49856d8 | 1540 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; |
e4e7b892 | 1541 | |
bdd4ddde | 1542 | /* get current queue index from software */ |
fcfb1f77 | 1543 | in_index = pp->req_idx; |
a6432436 ML |
1544 | |
1545 | crqb = (struct mv_crqb_iie *) &pp->crqb[in_index]; | |
eb73d558 ML |
1546 | crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); |
1547 | crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); | |
e4e7b892 JG |
1548 | crqb->flags = cpu_to_le32(flags); |
1549 | ||
1550 | tf = &qc->tf; | |
1551 | crqb->ata_cmd[0] = cpu_to_le32( | |
1552 | (tf->command << 16) | | |
1553 | (tf->feature << 24) | |
1554 | ); | |
1555 | crqb->ata_cmd[1] = cpu_to_le32( | |
1556 | (tf->lbal << 0) | | |
1557 | (tf->lbam << 8) | | |
1558 | (tf->lbah << 16) | | |
1559 | (tf->device << 24) | |
1560 | ); | |
1561 | crqb->ata_cmd[2] = cpu_to_le32( | |
1562 | (tf->hob_lbal << 0) | | |
1563 | (tf->hob_lbam << 8) | | |
1564 | (tf->hob_lbah << 16) | | |
1565 | (tf->hob_feature << 24) | |
1566 | ); | |
1567 | crqb->ata_cmd[3] = cpu_to_le32( | |
1568 | (tf->nsect << 0) | | |
1569 | (tf->hob_nsect << 8) | |
1570 | ); | |
1571 | ||
1572 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) | |
31961943 | 1573 | return; |
31961943 BR |
1574 | mv_fill_sg(qc); |
1575 | } | |
1576 | ||
05b308e1 BR |
1577 | /** |
1578 | * mv_qc_issue - Initiate a command to the host | |
1579 | * @qc: queued command to start | |
1580 | * | |
1581 | * This routine simply redirects to the general purpose routine | |
1582 | * if command is not DMA. Else, it sanity checks our local | |
1583 | * caches of the request producer/consumer indices then enables | |
1584 | * DMA and bumps the request producer index. | |
1585 | * | |
1586 | * LOCKING: | |
1587 | * Inherited from caller. | |
1588 | */ | |
9a3d9eb0 | 1589 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc) |
31961943 | 1590 | { |
c5d3e45a JG |
1591 | struct ata_port *ap = qc->ap; |
1592 | void __iomem *port_mmio = mv_ap_base(ap); | |
1593 | struct mv_port_priv *pp = ap->private_data; | |
bdd4ddde | 1594 | u32 in_index; |
31961943 | 1595 | |
138bfdd0 ML |
1596 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
1597 | (qc->tf.protocol != ATA_PROT_NCQ)) { | |
c6112bd8 ML |
1598 | static int limit_warnings = 10; |
1599 | /* | |
1600 | * Errata SATA#16, SATA#24: warn if multiple DRQs expected. | |
1601 | * | |
1602 | * Someday, we might implement special polling workarounds | |
1603 | * for these, but it all seems rather unnecessary since we | |
1604 | * normally use only DMA for commands which transfer more | |
1605 | * than a single block of data. | |
1606 | * | |
1607 | * Much of the time, this could just work regardless. | |
1608 | * So for now, just log the incident, and allow the attempt. | |
1609 | */ | |
c7843e8f | 1610 | if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) { |
c6112bd8 ML |
1611 | --limit_warnings; |
1612 | ata_link_printk(qc->dev->link, KERN_WARNING, DRV_NAME | |
1613 | ": attempting PIO w/multiple DRQ: " | |
1614 | "this may fail due to h/w errata\n"); | |
1615 | } | |
17c5aab5 ML |
1616 | /* |
1617 | * We're about to send a non-EDMA capable command to the | |
31961943 BR |
1618 | * port. Turn off EDMA so there won't be problems accessing |
1619 | * shadow block, etc registers. | |
1620 | */ | |
b562468c | 1621 | mv_stop_edma(ap); |
88e675e1 | 1622 | mv_enable_port_irqs(ap, ERR_IRQ); |
e49856d8 | 1623 | mv_pmp_select(ap, qc->dev->link->pmp); |
9363c382 | 1624 | return ata_sff_qc_issue(qc); |
31961943 BR |
1625 | } |
1626 | ||
72109168 | 1627 | mv_start_dma(ap, port_mmio, pp, qc->tf.protocol); |
bdd4ddde | 1628 | |
fcfb1f77 ML |
1629 | pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK; |
1630 | in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; | |
31961943 BR |
1631 | |
1632 | /* and write the request in pointer to kick the EDMA to life */ | |
bdd4ddde JG |
1633 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index, |
1634 | port_mmio + EDMA_REQ_Q_IN_PTR_OFS); | |
31961943 BR |
1635 | |
1636 | return 0; | |
1637 | } | |
1638 | ||
8f767f8a ML |
1639 | static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap) |
1640 | { | |
1641 | struct mv_port_priv *pp = ap->private_data; | |
1642 | struct ata_queued_cmd *qc; | |
1643 | ||
1644 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) | |
1645 | return NULL; | |
1646 | qc = ata_qc_from_tag(ap, ap->link.active_tag); | |
1647 | if (qc && (qc->tf.flags & ATA_TFLAG_POLLING)) | |
1648 | qc = NULL; | |
1649 | return qc; | |
1650 | } | |
1651 | ||
29d187bb ML |
1652 | static void mv_pmp_error_handler(struct ata_port *ap) |
1653 | { | |
1654 | unsigned int pmp, pmp_map; | |
1655 | struct mv_port_priv *pp = ap->private_data; | |
1656 | ||
1657 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) { | |
1658 | /* | |
1659 | * Perform NCQ error analysis on failed PMPs | |
1660 | * before we freeze the port entirely. | |
1661 | * | |
1662 | * The failed PMPs are marked earlier by mv_pmp_eh_prep(). | |
1663 | */ | |
1664 | pmp_map = pp->delayed_eh_pmp_map; | |
1665 | pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH; | |
1666 | for (pmp = 0; pmp_map != 0; pmp++) { | |
1667 | unsigned int this_pmp = (1 << pmp); | |
1668 | if (pmp_map & this_pmp) { | |
1669 | struct ata_link *link = &ap->pmp_link[pmp]; | |
1670 | pmp_map &= ~this_pmp; | |
1671 | ata_eh_analyze_ncq_error(link); | |
1672 | } | |
1673 | } | |
1674 | ata_port_freeze(ap); | |
1675 | } | |
1676 | sata_pmp_error_handler(ap); | |
1677 | } | |
1678 | ||
4c299ca3 ML |
1679 | static unsigned int mv_get_err_pmp_map(struct ata_port *ap) |
1680 | { | |
1681 | void __iomem *port_mmio = mv_ap_base(ap); | |
1682 | ||
1683 | return readl(port_mmio + SATA_TESTCTL_OFS) >> 16; | |
1684 | } | |
1685 | ||
4c299ca3 ML |
1686 | static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map) |
1687 | { | |
1688 | struct ata_eh_info *ehi; | |
1689 | unsigned int pmp; | |
1690 | ||
1691 | /* | |
1692 | * Initialize EH info for PMPs which saw device errors | |
1693 | */ | |
1694 | ehi = &ap->link.eh_info; | |
1695 | for (pmp = 0; pmp_map != 0; pmp++) { | |
1696 | unsigned int this_pmp = (1 << pmp); | |
1697 | if (pmp_map & this_pmp) { | |
1698 | struct ata_link *link = &ap->pmp_link[pmp]; | |
1699 | ||
1700 | pmp_map &= ~this_pmp; | |
1701 | ehi = &link->eh_info; | |
1702 | ata_ehi_clear_desc(ehi); | |
1703 | ata_ehi_push_desc(ehi, "dev err"); | |
1704 | ehi->err_mask |= AC_ERR_DEV; | |
1705 | ehi->action |= ATA_EH_RESET; | |
1706 | ata_link_abort(link); | |
1707 | } | |
1708 | } | |
1709 | } | |
1710 | ||
06aaca3f ML |
1711 | static int mv_req_q_empty(struct ata_port *ap) |
1712 | { | |
1713 | void __iomem *port_mmio = mv_ap_base(ap); | |
1714 | u32 in_ptr, out_ptr; | |
1715 | ||
1716 | in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS) | |
1717 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; | |
1718 | out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS) | |
1719 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; | |
1720 | return (in_ptr == out_ptr); /* 1 == queue_is_empty */ | |
1721 | } | |
1722 | ||
4c299ca3 ML |
1723 | static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap) |
1724 | { | |
1725 | struct mv_port_priv *pp = ap->private_data; | |
1726 | int failed_links; | |
1727 | unsigned int old_map, new_map; | |
1728 | ||
1729 | /* | |
1730 | * Device error during FBS+NCQ operation: | |
1731 | * | |
1732 | * Set a port flag to prevent further I/O being enqueued. | |
1733 | * Leave the EDMA running to drain outstanding commands from this port. | |
1734 | * Perform the post-mortem/EH only when all responses are complete. | |
1735 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2). | |
1736 | */ | |
1737 | if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) { | |
1738 | pp->pp_flags |= MV_PP_FLAG_DELAYED_EH; | |
1739 | pp->delayed_eh_pmp_map = 0; | |
1740 | } | |
1741 | old_map = pp->delayed_eh_pmp_map; | |
1742 | new_map = old_map | mv_get_err_pmp_map(ap); | |
1743 | ||
1744 | if (old_map != new_map) { | |
1745 | pp->delayed_eh_pmp_map = new_map; | |
1746 | mv_pmp_eh_prep(ap, new_map & ~old_map); | |
1747 | } | |
c46938cc | 1748 | failed_links = hweight16(new_map); |
4c299ca3 ML |
1749 | |
1750 | ata_port_printk(ap, KERN_INFO, "%s: pmp_map=%04x qc_map=%04x " | |
1751 | "failed_links=%d nr_active_links=%d\n", | |
1752 | __func__, pp->delayed_eh_pmp_map, | |
1753 | ap->qc_active, failed_links, | |
1754 | ap->nr_active_links); | |
1755 | ||
06aaca3f | 1756 | if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) { |
4c299ca3 ML |
1757 | mv_process_crpb_entries(ap, pp); |
1758 | mv_stop_edma(ap); | |
1759 | mv_eh_freeze(ap); | |
1760 | ata_port_printk(ap, KERN_INFO, "%s: done\n", __func__); | |
1761 | return 1; /* handled */ | |
1762 | } | |
1763 | ata_port_printk(ap, KERN_INFO, "%s: waiting\n", __func__); | |
1764 | return 1; /* handled */ | |
1765 | } | |
1766 | ||
1767 | static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap) | |
1768 | { | |
1769 | /* | |
1770 | * Possible future enhancement: | |
1771 | * | |
1772 | * FBS+non-NCQ operation is not yet implemented. | |
1773 | * See related notes in mv_edma_cfg(). | |
1774 | * | |
1775 | * Device error during FBS+non-NCQ operation: | |
1776 | * | |
1777 | * We need to snapshot the shadow registers for each failed command. | |
1778 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3). | |
1779 | */ | |
1780 | return 0; /* not handled */ | |
1781 | } | |
1782 | ||
1783 | static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause) | |
1784 | { | |
1785 | struct mv_port_priv *pp = ap->private_data; | |
1786 | ||
1787 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) | |
1788 | return 0; /* EDMA was not active: not handled */ | |
1789 | if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN)) | |
1790 | return 0; /* FBS was not active: not handled */ | |
1791 | ||
1792 | if (!(edma_err_cause & EDMA_ERR_DEV)) | |
1793 | return 0; /* non DEV error: not handled */ | |
1794 | edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT; | |
1795 | if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS)) | |
1796 | return 0; /* other problems: not handled */ | |
1797 | ||
1798 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) { | |
1799 | /* | |
1800 | * EDMA should NOT have self-disabled for this case. | |
1801 | * If it did, then something is wrong elsewhere, | |
1802 | * and we cannot handle it here. | |
1803 | */ | |
1804 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { | |
1805 | ata_port_printk(ap, KERN_WARNING, | |
1806 | "%s: err_cause=0x%x pp_flags=0x%x\n", | |
1807 | __func__, edma_err_cause, pp->pp_flags); | |
1808 | return 0; /* not handled */ | |
1809 | } | |
1810 | return mv_handle_fbs_ncq_dev_err(ap); | |
1811 | } else { | |
1812 | /* | |
1813 | * EDMA should have self-disabled for this case. | |
1814 | * If it did not, then something is wrong elsewhere, | |
1815 | * and we cannot handle it here. | |
1816 | */ | |
1817 | if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) { | |
1818 | ata_port_printk(ap, KERN_WARNING, | |
1819 | "%s: err_cause=0x%x pp_flags=0x%x\n", | |
1820 | __func__, edma_err_cause, pp->pp_flags); | |
1821 | return 0; /* not handled */ | |
1822 | } | |
1823 | return mv_handle_fbs_non_ncq_dev_err(ap); | |
1824 | } | |
1825 | return 0; /* not handled */ | |
1826 | } | |
1827 | ||
a9010329 | 1828 | static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled) |
8f767f8a | 1829 | { |
8f767f8a | 1830 | struct ata_eh_info *ehi = &ap->link.eh_info; |
a9010329 | 1831 | char *when = "idle"; |
8f767f8a | 1832 | |
8f767f8a | 1833 | ata_ehi_clear_desc(ehi); |
a9010329 ML |
1834 | if (!ap || (ap->flags & ATA_FLAG_DISABLED)) { |
1835 | when = "disabled"; | |
1836 | } else if (edma_was_enabled) { | |
1837 | when = "EDMA enabled"; | |
8f767f8a ML |
1838 | } else { |
1839 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag); | |
1840 | if (qc && (qc->tf.flags & ATA_TFLAG_POLLING)) | |
a9010329 | 1841 | when = "polling"; |
8f767f8a | 1842 | } |
a9010329 | 1843 | ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when); |
8f767f8a ML |
1844 | ehi->err_mask |= AC_ERR_OTHER; |
1845 | ehi->action |= ATA_EH_RESET; | |
1846 | ata_port_freeze(ap); | |
1847 | } | |
1848 | ||
05b308e1 BR |
1849 | /** |
1850 | * mv_err_intr - Handle error interrupts on the port | |
1851 | * @ap: ATA channel to manipulate | |
8d07379d | 1852 | * @qc: affected command (non-NCQ), or NULL |
05b308e1 | 1853 | * |
8d07379d ML |
1854 | * Most cases require a full reset of the chip's state machine, |
1855 | * which also performs a COMRESET. | |
1856 | * Also, if the port disabled DMA, update our cached copy to match. | |
05b308e1 BR |
1857 | * |
1858 | * LOCKING: | |
1859 | * Inherited from caller. | |
1860 | */ | |
37b9046a | 1861 | static void mv_err_intr(struct ata_port *ap) |
31961943 BR |
1862 | { |
1863 | void __iomem *port_mmio = mv_ap_base(ap); | |
bdd4ddde | 1864 | u32 edma_err_cause, eh_freeze_mask, serr = 0; |
e4006077 | 1865 | u32 fis_cause = 0; |
bdd4ddde JG |
1866 | struct mv_port_priv *pp = ap->private_data; |
1867 | struct mv_host_priv *hpriv = ap->host->private_data; | |
bdd4ddde | 1868 | unsigned int action = 0, err_mask = 0; |
9af5c9c9 | 1869 | struct ata_eh_info *ehi = &ap->link.eh_info; |
37b9046a ML |
1870 | struct ata_queued_cmd *qc; |
1871 | int abort = 0; | |
20f733e7 | 1872 | |
8d07379d | 1873 | /* |
37b9046a | 1874 | * Read and clear the SError and err_cause bits. |
e4006077 ML |
1875 | * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear |
1876 | * the FIS_IRQ_CAUSE register before clearing edma_err_cause. | |
8d07379d | 1877 | */ |
37b9046a ML |
1878 | sata_scr_read(&ap->link, SCR_ERROR, &serr); |
1879 | sata_scr_write_flush(&ap->link, SCR_ERROR, serr); | |
1880 | ||
bdd4ddde | 1881 | edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
e4006077 ML |
1882 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { |
1883 | fis_cause = readl(port_mmio + SATA_FIS_IRQ_CAUSE_OFS); | |
1884 | writelfl(~fis_cause, port_mmio + SATA_FIS_IRQ_CAUSE_OFS); | |
1885 | } | |
8d07379d | 1886 | writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
bdd4ddde | 1887 | |
4c299ca3 ML |
1888 | if (edma_err_cause & EDMA_ERR_DEV) { |
1889 | /* | |
1890 | * Device errors during FIS-based switching operation | |
1891 | * require special handling. | |
1892 | */ | |
1893 | if (mv_handle_dev_err(ap, edma_err_cause)) | |
1894 | return; | |
1895 | } | |
1896 | ||
37b9046a ML |
1897 | qc = mv_get_active_qc(ap); |
1898 | ata_ehi_clear_desc(ehi); | |
1899 | ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x", | |
1900 | edma_err_cause, pp->pp_flags); | |
e4006077 | 1901 | |
c443c500 | 1902 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { |
e4006077 | 1903 | ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause); |
c443c500 ML |
1904 | if (fis_cause & SATA_FIS_IRQ_AN) { |
1905 | u32 ec = edma_err_cause & | |
1906 | ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT); | |
1907 | sata_async_notification(ap); | |
1908 | if (!ec) | |
1909 | return; /* Just an AN; no need for the nukes */ | |
1910 | ata_ehi_push_desc(ehi, "SDB notify"); | |
1911 | } | |
1912 | } | |
bdd4ddde | 1913 | /* |
352fab70 | 1914 | * All generations share these EDMA error cause bits: |
bdd4ddde | 1915 | */ |
37b9046a | 1916 | if (edma_err_cause & EDMA_ERR_DEV) { |
bdd4ddde | 1917 | err_mask |= AC_ERR_DEV; |
37b9046a ML |
1918 | action |= ATA_EH_RESET; |
1919 | ata_ehi_push_desc(ehi, "dev error"); | |
1920 | } | |
bdd4ddde | 1921 | if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR | |
6c1153e0 | 1922 | EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR | |
bdd4ddde JG |
1923 | EDMA_ERR_INTRL_PAR)) { |
1924 | err_mask |= AC_ERR_ATA_BUS; | |
cf480626 | 1925 | action |= ATA_EH_RESET; |
b64bbc39 | 1926 | ata_ehi_push_desc(ehi, "parity error"); |
bdd4ddde JG |
1927 | } |
1928 | if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) { | |
1929 | ata_ehi_hotplugged(ehi); | |
1930 | ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ? | |
b64bbc39 | 1931 | "dev disconnect" : "dev connect"); |
cf480626 | 1932 | action |= ATA_EH_RESET; |
bdd4ddde JG |
1933 | } |
1934 | ||
352fab70 ML |
1935 | /* |
1936 | * Gen-I has a different SELF_DIS bit, | |
1937 | * different FREEZE bits, and no SERR bit: | |
1938 | */ | |
ee9ccdf7 | 1939 | if (IS_GEN_I(hpriv)) { |
bdd4ddde | 1940 | eh_freeze_mask = EDMA_EH_FREEZE_5; |
bdd4ddde | 1941 | if (edma_err_cause & EDMA_ERR_SELF_DIS_5) { |
bdd4ddde | 1942 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
b64bbc39 | 1943 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
bdd4ddde JG |
1944 | } |
1945 | } else { | |
1946 | eh_freeze_mask = EDMA_EH_FREEZE; | |
bdd4ddde | 1947 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { |
bdd4ddde | 1948 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
b64bbc39 | 1949 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
bdd4ddde | 1950 | } |
bdd4ddde | 1951 | if (edma_err_cause & EDMA_ERR_SERR) { |
8d07379d ML |
1952 | ata_ehi_push_desc(ehi, "SError=%08x", serr); |
1953 | err_mask |= AC_ERR_ATA_BUS; | |
cf480626 | 1954 | action |= ATA_EH_RESET; |
bdd4ddde | 1955 | } |
afb0edd9 | 1956 | } |
20f733e7 | 1957 | |
bdd4ddde JG |
1958 | if (!err_mask) { |
1959 | err_mask = AC_ERR_OTHER; | |
cf480626 | 1960 | action |= ATA_EH_RESET; |
bdd4ddde JG |
1961 | } |
1962 | ||
1963 | ehi->serror |= serr; | |
1964 | ehi->action |= action; | |
1965 | ||
1966 | if (qc) | |
1967 | qc->err_mask |= err_mask; | |
1968 | else | |
1969 | ehi->err_mask |= err_mask; | |
1970 | ||
37b9046a ML |
1971 | if (err_mask == AC_ERR_DEV) { |
1972 | /* | |
1973 | * Cannot do ata_port_freeze() here, | |
1974 | * because it would kill PIO access, | |
1975 | * which is needed for further diagnosis. | |
1976 | */ | |
1977 | mv_eh_freeze(ap); | |
1978 | abort = 1; | |
1979 | } else if (edma_err_cause & eh_freeze_mask) { | |
1980 | /* | |
1981 | * Note to self: ata_port_freeze() calls ata_port_abort() | |
1982 | */ | |
bdd4ddde | 1983 | ata_port_freeze(ap); |
37b9046a ML |
1984 | } else { |
1985 | abort = 1; | |
1986 | } | |
1987 | ||
1988 | if (abort) { | |
1989 | if (qc) | |
1990 | ata_link_abort(qc->dev->link); | |
1991 | else | |
1992 | ata_port_abort(ap); | |
1993 | } | |
bdd4ddde JG |
1994 | } |
1995 | ||
fcfb1f77 ML |
1996 | static void mv_process_crpb_response(struct ata_port *ap, |
1997 | struct mv_crpb *response, unsigned int tag, int ncq_enabled) | |
1998 | { | |
1999 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag); | |
2000 | ||
2001 | if (qc) { | |
2002 | u8 ata_status; | |
2003 | u16 edma_status = le16_to_cpu(response->flags); | |
2004 | /* | |
2005 | * edma_status from a response queue entry: | |
2006 | * LSB is from EDMA_ERR_IRQ_CAUSE_OFS (non-NCQ only). | |
2007 | * MSB is saved ATA status from command completion. | |
2008 | */ | |
2009 | if (!ncq_enabled) { | |
2010 | u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV; | |
2011 | if (err_cause) { | |
2012 | /* | |
2013 | * Error will be seen/handled by mv_err_intr(). | |
2014 | * So do nothing at all here. | |
2015 | */ | |
2016 | return; | |
2017 | } | |
2018 | } | |
2019 | ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT; | |
37b9046a ML |
2020 | if (!ac_err_mask(ata_status)) |
2021 | ata_qc_complete(qc); | |
2022 | /* else: leave it for mv_err_intr() */ | |
fcfb1f77 ML |
2023 | } else { |
2024 | ata_port_printk(ap, KERN_ERR, "%s: no qc for tag=%d\n", | |
2025 | __func__, tag); | |
2026 | } | |
2027 | } | |
2028 | ||
2029 | static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp) | |
bdd4ddde JG |
2030 | { |
2031 | void __iomem *port_mmio = mv_ap_base(ap); | |
2032 | struct mv_host_priv *hpriv = ap->host->private_data; | |
fcfb1f77 | 2033 | u32 in_index; |
bdd4ddde | 2034 | bool work_done = false; |
fcfb1f77 | 2035 | int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN); |
bdd4ddde | 2036 | |
fcfb1f77 | 2037 | /* Get the hardware queue position index */ |
bdd4ddde JG |
2038 | in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS) |
2039 | >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; | |
2040 | ||
fcfb1f77 ML |
2041 | /* Process new responses from since the last time we looked */ |
2042 | while (in_index != pp->resp_idx) { | |
6c1153e0 | 2043 | unsigned int tag; |
fcfb1f77 | 2044 | struct mv_crpb *response = &pp->crpb[pp->resp_idx]; |
bdd4ddde | 2045 | |
fcfb1f77 | 2046 | pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK; |
bdd4ddde | 2047 | |
fcfb1f77 ML |
2048 | if (IS_GEN_I(hpriv)) { |
2049 | /* 50xx: no NCQ, only one command active at a time */ | |
9af5c9c9 | 2050 | tag = ap->link.active_tag; |
fcfb1f77 ML |
2051 | } else { |
2052 | /* Gen II/IIE: get command tag from CRPB entry */ | |
2053 | tag = le16_to_cpu(response->id) & 0x1f; | |
bdd4ddde | 2054 | } |
fcfb1f77 | 2055 | mv_process_crpb_response(ap, response, tag, ncq_enabled); |
bdd4ddde | 2056 | work_done = true; |
bdd4ddde JG |
2057 | } |
2058 | ||
352fab70 | 2059 | /* Update the software queue position index in hardware */ |
bdd4ddde JG |
2060 | if (work_done) |
2061 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | | |
fcfb1f77 | 2062 | (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT), |
bdd4ddde | 2063 | port_mmio + EDMA_RSP_Q_OUT_PTR_OFS); |
20f733e7 BR |
2064 | } |
2065 | ||
a9010329 ML |
2066 | static void mv_port_intr(struct ata_port *ap, u32 port_cause) |
2067 | { | |
2068 | struct mv_port_priv *pp; | |
2069 | int edma_was_enabled; | |
2070 | ||
2071 | if (!ap || (ap->flags & ATA_FLAG_DISABLED)) { | |
2072 | mv_unexpected_intr(ap, 0); | |
2073 | return; | |
2074 | } | |
2075 | /* | |
2076 | * Grab a snapshot of the EDMA_EN flag setting, | |
2077 | * so that we have a consistent view for this port, | |
2078 | * even if something we call of our routines changes it. | |
2079 | */ | |
2080 | pp = ap->private_data; | |
2081 | edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN); | |
2082 | /* | |
2083 | * Process completed CRPB response(s) before other events. | |
2084 | */ | |
2085 | if (edma_was_enabled && (port_cause & DONE_IRQ)) { | |
2086 | mv_process_crpb_entries(ap, pp); | |
4c299ca3 ML |
2087 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) |
2088 | mv_handle_fbs_ncq_dev_err(ap); | |
a9010329 ML |
2089 | } |
2090 | /* | |
2091 | * Handle chip-reported errors, or continue on to handle PIO. | |
2092 | */ | |
2093 | if (unlikely(port_cause & ERR_IRQ)) { | |
2094 | mv_err_intr(ap); | |
2095 | } else if (!edma_was_enabled) { | |
2096 | struct ata_queued_cmd *qc = mv_get_active_qc(ap); | |
2097 | if (qc) | |
2098 | ata_sff_host_intr(ap, qc); | |
2099 | else | |
2100 | mv_unexpected_intr(ap, edma_was_enabled); | |
2101 | } | |
2102 | } | |
2103 | ||
05b308e1 BR |
2104 | /** |
2105 | * mv_host_intr - Handle all interrupts on the given host controller | |
cca3974e | 2106 | * @host: host specific structure |
7368f919 | 2107 | * @main_irq_cause: Main interrupt cause register for the chip. |
05b308e1 BR |
2108 | * |
2109 | * LOCKING: | |
2110 | * Inherited from caller. | |
2111 | */ | |
7368f919 | 2112 | static int mv_host_intr(struct ata_host *host, u32 main_irq_cause) |
20f733e7 | 2113 | { |
f351b2d6 | 2114 | struct mv_host_priv *hpriv = host->private_data; |
eabd5eb1 | 2115 | void __iomem *mmio = hpriv->base, *hc_mmio; |
a3718c1f | 2116 | unsigned int handled = 0, port; |
20f733e7 | 2117 | |
a3718c1f | 2118 | for (port = 0; port < hpriv->n_ports; port++) { |
cca3974e | 2119 | struct ata_port *ap = host->ports[port]; |
eabd5eb1 ML |
2120 | unsigned int p, shift, hardport, port_cause; |
2121 | ||
a3718c1f | 2122 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); |
a3718c1f | 2123 | /* |
eabd5eb1 ML |
2124 | * Each hc within the host has its own hc_irq_cause register, |
2125 | * where the interrupting ports bits get ack'd. | |
a3718c1f | 2126 | */ |
eabd5eb1 ML |
2127 | if (hardport == 0) { /* first port on this hc ? */ |
2128 | u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND; | |
2129 | u32 port_mask, ack_irqs; | |
2130 | /* | |
2131 | * Skip this entire hc if nothing pending for any ports | |
2132 | */ | |
2133 | if (!hc_cause) { | |
2134 | port += MV_PORTS_PER_HC - 1; | |
2135 | continue; | |
2136 | } | |
2137 | /* | |
2138 | * We don't need/want to read the hc_irq_cause register, | |
2139 | * because doing so hurts performance, and | |
2140 | * main_irq_cause already gives us everything we need. | |
2141 | * | |
2142 | * But we do have to *write* to the hc_irq_cause to ack | |
2143 | * the ports that we are handling this time through. | |
2144 | * | |
2145 | * This requires that we create a bitmap for those | |
2146 | * ports which interrupted us, and use that bitmap | |
2147 | * to ack (only) those ports via hc_irq_cause. | |
2148 | */ | |
2149 | ack_irqs = 0; | |
2150 | for (p = 0; p < MV_PORTS_PER_HC; ++p) { | |
2151 | if ((port + p) >= hpriv->n_ports) | |
2152 | break; | |
2153 | port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2); | |
2154 | if (hc_cause & port_mask) | |
2155 | ack_irqs |= (DMA_IRQ | DEV_IRQ) << p; | |
2156 | } | |
a3718c1f | 2157 | hc_mmio = mv_hc_base_from_port(mmio, port); |
eabd5eb1 | 2158 | writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE_OFS); |
a3718c1f ML |
2159 | handled = 1; |
2160 | } | |
8f767f8a | 2161 | /* |
a9010329 | 2162 | * Handle interrupts signalled for this port: |
8f767f8a | 2163 | */ |
a9010329 ML |
2164 | port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ); |
2165 | if (port_cause) | |
2166 | mv_port_intr(ap, port_cause); | |
20f733e7 | 2167 | } |
a3718c1f | 2168 | return handled; |
20f733e7 BR |
2169 | } |
2170 | ||
a3718c1f | 2171 | static int mv_pci_error(struct ata_host *host, void __iomem *mmio) |
bdd4ddde | 2172 | { |
02a121da | 2173 | struct mv_host_priv *hpriv = host->private_data; |
bdd4ddde JG |
2174 | struct ata_port *ap; |
2175 | struct ata_queued_cmd *qc; | |
2176 | struct ata_eh_info *ehi; | |
2177 | unsigned int i, err_mask, printed = 0; | |
2178 | u32 err_cause; | |
2179 | ||
02a121da | 2180 | err_cause = readl(mmio + hpriv->irq_cause_ofs); |
bdd4ddde JG |
2181 | |
2182 | dev_printk(KERN_ERR, host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n", | |
2183 | err_cause); | |
2184 | ||
2185 | DPRINTK("All regs @ PCI error\n"); | |
2186 | mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev)); | |
2187 | ||
02a121da | 2188 | writelfl(0, mmio + hpriv->irq_cause_ofs); |
bdd4ddde JG |
2189 | |
2190 | for (i = 0; i < host->n_ports; i++) { | |
2191 | ap = host->ports[i]; | |
936fd732 | 2192 | if (!ata_link_offline(&ap->link)) { |
9af5c9c9 | 2193 | ehi = &ap->link.eh_info; |
bdd4ddde JG |
2194 | ata_ehi_clear_desc(ehi); |
2195 | if (!printed++) | |
2196 | ata_ehi_push_desc(ehi, | |
2197 | "PCI err cause 0x%08x", err_cause); | |
2198 | err_mask = AC_ERR_HOST_BUS; | |
cf480626 | 2199 | ehi->action = ATA_EH_RESET; |
9af5c9c9 | 2200 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
bdd4ddde JG |
2201 | if (qc) |
2202 | qc->err_mask |= err_mask; | |
2203 | else | |
2204 | ehi->err_mask |= err_mask; | |
2205 | ||
2206 | ata_port_freeze(ap); | |
2207 | } | |
2208 | } | |
a3718c1f | 2209 | return 1; /* handled */ |
bdd4ddde JG |
2210 | } |
2211 | ||
05b308e1 | 2212 | /** |
c5d3e45a | 2213 | * mv_interrupt - Main interrupt event handler |
05b308e1 BR |
2214 | * @irq: unused |
2215 | * @dev_instance: private data; in this case the host structure | |
05b308e1 BR |
2216 | * |
2217 | * Read the read only register to determine if any host | |
2218 | * controllers have pending interrupts. If so, call lower level | |
2219 | * routine to handle. Also check for PCI errors which are only | |
2220 | * reported here. | |
2221 | * | |
8b260248 | 2222 | * LOCKING: |
cca3974e | 2223 | * This routine holds the host lock while processing pending |
05b308e1 BR |
2224 | * interrupts. |
2225 | */ | |
7d12e780 | 2226 | static irqreturn_t mv_interrupt(int irq, void *dev_instance) |
20f733e7 | 2227 | { |
cca3974e | 2228 | struct ata_host *host = dev_instance; |
f351b2d6 | 2229 | struct mv_host_priv *hpriv = host->private_data; |
a3718c1f | 2230 | unsigned int handled = 0; |
96e2c487 | 2231 | u32 main_irq_cause, pending_irqs; |
20f733e7 | 2232 | |
646a4da5 | 2233 | spin_lock(&host->lock); |
7368f919 | 2234 | main_irq_cause = readl(hpriv->main_irq_cause_addr); |
96e2c487 | 2235 | pending_irqs = main_irq_cause & hpriv->main_irq_mask; |
352fab70 ML |
2236 | /* |
2237 | * Deal with cases where we either have nothing pending, or have read | |
2238 | * a bogus register value which can indicate HW removal or PCI fault. | |
20f733e7 | 2239 | */ |
a44253d2 | 2240 | if (pending_irqs && main_irq_cause != 0xffffffffU) { |
1f398472 | 2241 | if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv))) |
a3718c1f ML |
2242 | handled = mv_pci_error(host, hpriv->base); |
2243 | else | |
a44253d2 | 2244 | handled = mv_host_intr(host, pending_irqs); |
bdd4ddde | 2245 | } |
cca3974e | 2246 | spin_unlock(&host->lock); |
20f733e7 BR |
2247 | return IRQ_RETVAL(handled); |
2248 | } | |
2249 | ||
c9d39130 JG |
2250 | static unsigned int mv5_scr_offset(unsigned int sc_reg_in) |
2251 | { | |
2252 | unsigned int ofs; | |
2253 | ||
2254 | switch (sc_reg_in) { | |
2255 | case SCR_STATUS: | |
2256 | case SCR_ERROR: | |
2257 | case SCR_CONTROL: | |
2258 | ofs = sc_reg_in * sizeof(u32); | |
2259 | break; | |
2260 | default: | |
2261 | ofs = 0xffffffffU; | |
2262 | break; | |
2263 | } | |
2264 | return ofs; | |
2265 | } | |
2266 | ||
da3dbb17 | 2267 | static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val) |
c9d39130 | 2268 | { |
f351b2d6 SB |
2269 | struct mv_host_priv *hpriv = ap->host->private_data; |
2270 | void __iomem *mmio = hpriv->base; | |
0d5ff566 | 2271 | void __iomem *addr = mv5_phy_base(mmio, ap->port_no); |
c9d39130 JG |
2272 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
2273 | ||
da3dbb17 TH |
2274 | if (ofs != 0xffffffffU) { |
2275 | *val = readl(addr + ofs); | |
2276 | return 0; | |
2277 | } else | |
2278 | return -EINVAL; | |
c9d39130 JG |
2279 | } |
2280 | ||
da3dbb17 | 2281 | static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val) |
c9d39130 | 2282 | { |
f351b2d6 SB |
2283 | struct mv_host_priv *hpriv = ap->host->private_data; |
2284 | void __iomem *mmio = hpriv->base; | |
0d5ff566 | 2285 | void __iomem *addr = mv5_phy_base(mmio, ap->port_no); |
c9d39130 JG |
2286 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
2287 | ||
da3dbb17 | 2288 | if (ofs != 0xffffffffU) { |
0d5ff566 | 2289 | writelfl(val, addr + ofs); |
da3dbb17 TH |
2290 | return 0; |
2291 | } else | |
2292 | return -EINVAL; | |
c9d39130 JG |
2293 | } |
2294 | ||
7bb3c529 | 2295 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio) |
522479fb | 2296 | { |
7bb3c529 | 2297 | struct pci_dev *pdev = to_pci_dev(host->dev); |
522479fb JG |
2298 | int early_5080; |
2299 | ||
44c10138 | 2300 | early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0); |
522479fb JG |
2301 | |
2302 | if (!early_5080) { | |
2303 | u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
2304 | tmp |= (1 << 0); | |
2305 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
2306 | } | |
2307 | ||
7bb3c529 | 2308 | mv_reset_pci_bus(host, mmio); |
522479fb JG |
2309 | } |
2310 | ||
2311 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) | |
2312 | { | |
8e7decdb | 2313 | writel(0x0fcfffff, mmio + MV_FLASH_CTL_OFS); |
522479fb JG |
2314 | } |
2315 | ||
47c2b677 | 2316 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, |
ba3fe8fb JG |
2317 | void __iomem *mmio) |
2318 | { | |
c9d39130 JG |
2319 | void __iomem *phy_mmio = mv5_phy_base(mmio, idx); |
2320 | u32 tmp; | |
2321 | ||
2322 | tmp = readl(phy_mmio + MV5_PHY_MODE); | |
2323 | ||
2324 | hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */ | |
2325 | hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */ | |
ba3fe8fb JG |
2326 | } |
2327 | ||
47c2b677 | 2328 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) |
ba3fe8fb | 2329 | { |
522479fb JG |
2330 | u32 tmp; |
2331 | ||
8e7decdb | 2332 | writel(0, mmio + MV_GPIO_PORT_CTL_OFS); |
522479fb JG |
2333 | |
2334 | /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */ | |
2335 | ||
2336 | tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
2337 | tmp |= ~(1 << 0); | |
2338 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
ba3fe8fb JG |
2339 | } |
2340 | ||
2a47ce06 JG |
2341 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
2342 | unsigned int port) | |
bca1c4eb | 2343 | { |
c9d39130 JG |
2344 | void __iomem *phy_mmio = mv5_phy_base(mmio, port); |
2345 | const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5); | |
2346 | u32 tmp; | |
2347 | int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0); | |
2348 | ||
2349 | if (fix_apm_sq) { | |
8e7decdb | 2350 | tmp = readl(phy_mmio + MV5_LTMODE_OFS); |
c9d39130 | 2351 | tmp |= (1 << 19); |
8e7decdb | 2352 | writel(tmp, phy_mmio + MV5_LTMODE_OFS); |
c9d39130 | 2353 | |
8e7decdb | 2354 | tmp = readl(phy_mmio + MV5_PHY_CTL_OFS); |
c9d39130 JG |
2355 | tmp &= ~0x3; |
2356 | tmp |= 0x1; | |
8e7decdb | 2357 | writel(tmp, phy_mmio + MV5_PHY_CTL_OFS); |
c9d39130 JG |
2358 | } |
2359 | ||
2360 | tmp = readl(phy_mmio + MV5_PHY_MODE); | |
2361 | tmp &= ~mask; | |
2362 | tmp |= hpriv->signal[port].pre; | |
2363 | tmp |= hpriv->signal[port].amps; | |
2364 | writel(tmp, phy_mmio + MV5_PHY_MODE); | |
bca1c4eb JG |
2365 | } |
2366 | ||
c9d39130 JG |
2367 | |
2368 | #undef ZERO | |
2369 | #define ZERO(reg) writel(0, port_mmio + (reg)) | |
2370 | static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio, | |
2371 | unsigned int port) | |
2372 | { | |
2373 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
2374 | ||
e12bef50 | 2375 | mv_reset_channel(hpriv, mmio, port); |
c9d39130 JG |
2376 | |
2377 | ZERO(0x028); /* command */ | |
2378 | writel(0x11f, port_mmio + EDMA_CFG_OFS); | |
2379 | ZERO(0x004); /* timer */ | |
2380 | ZERO(0x008); /* irq err cause */ | |
2381 | ZERO(0x00c); /* irq err mask */ | |
2382 | ZERO(0x010); /* rq bah */ | |
2383 | ZERO(0x014); /* rq inp */ | |
2384 | ZERO(0x018); /* rq outp */ | |
2385 | ZERO(0x01c); /* respq bah */ | |
2386 | ZERO(0x024); /* respq outp */ | |
2387 | ZERO(0x020); /* respq inp */ | |
2388 | ZERO(0x02c); /* test control */ | |
8e7decdb | 2389 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS); |
c9d39130 JG |
2390 | } |
2391 | #undef ZERO | |
2392 | ||
2393 | #define ZERO(reg) writel(0, hc_mmio + (reg)) | |
2394 | static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
2395 | unsigned int hc) | |
47c2b677 | 2396 | { |
c9d39130 JG |
2397 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
2398 | u32 tmp; | |
2399 | ||
2400 | ZERO(0x00c); | |
2401 | ZERO(0x010); | |
2402 | ZERO(0x014); | |
2403 | ZERO(0x018); | |
2404 | ||
2405 | tmp = readl(hc_mmio + 0x20); | |
2406 | tmp &= 0x1c1c1c1c; | |
2407 | tmp |= 0x03030303; | |
2408 | writel(tmp, hc_mmio + 0x20); | |
2409 | } | |
2410 | #undef ZERO | |
2411 | ||
2412 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
2413 | unsigned int n_hc) | |
2414 | { | |
2415 | unsigned int hc, port; | |
2416 | ||
2417 | for (hc = 0; hc < n_hc; hc++) { | |
2418 | for (port = 0; port < MV_PORTS_PER_HC; port++) | |
2419 | mv5_reset_hc_port(hpriv, mmio, | |
2420 | (hc * MV_PORTS_PER_HC) + port); | |
2421 | ||
2422 | mv5_reset_one_hc(hpriv, mmio, hc); | |
2423 | } | |
2424 | ||
2425 | return 0; | |
47c2b677 JG |
2426 | } |
2427 | ||
101ffae2 JG |
2428 | #undef ZERO |
2429 | #define ZERO(reg) writel(0, mmio + (reg)) | |
7bb3c529 | 2430 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio) |
101ffae2 | 2431 | { |
02a121da | 2432 | struct mv_host_priv *hpriv = host->private_data; |
101ffae2 JG |
2433 | u32 tmp; |
2434 | ||
8e7decdb | 2435 | tmp = readl(mmio + MV_PCI_MODE_OFS); |
101ffae2 | 2436 | tmp &= 0xff00ffff; |
8e7decdb | 2437 | writel(tmp, mmio + MV_PCI_MODE_OFS); |
101ffae2 JG |
2438 | |
2439 | ZERO(MV_PCI_DISC_TIMER); | |
2440 | ZERO(MV_PCI_MSI_TRIGGER); | |
8e7decdb | 2441 | writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT_OFS); |
101ffae2 | 2442 | ZERO(MV_PCI_SERR_MASK); |
02a121da ML |
2443 | ZERO(hpriv->irq_cause_ofs); |
2444 | ZERO(hpriv->irq_mask_ofs); | |
101ffae2 JG |
2445 | ZERO(MV_PCI_ERR_LOW_ADDRESS); |
2446 | ZERO(MV_PCI_ERR_HIGH_ADDRESS); | |
2447 | ZERO(MV_PCI_ERR_ATTRIBUTE); | |
2448 | ZERO(MV_PCI_ERR_COMMAND); | |
2449 | } | |
2450 | #undef ZERO | |
2451 | ||
2452 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) | |
2453 | { | |
2454 | u32 tmp; | |
2455 | ||
2456 | mv5_reset_flash(hpriv, mmio); | |
2457 | ||
8e7decdb | 2458 | tmp = readl(mmio + MV_GPIO_PORT_CTL_OFS); |
101ffae2 JG |
2459 | tmp &= 0x3; |
2460 | tmp |= (1 << 5) | (1 << 6); | |
8e7decdb | 2461 | writel(tmp, mmio + MV_GPIO_PORT_CTL_OFS); |
101ffae2 JG |
2462 | } |
2463 | ||
2464 | /** | |
2465 | * mv6_reset_hc - Perform the 6xxx global soft reset | |
2466 | * @mmio: base address of the HBA | |
2467 | * | |
2468 | * This routine only applies to 6xxx parts. | |
2469 | * | |
2470 | * LOCKING: | |
2471 | * Inherited from caller. | |
2472 | */ | |
c9d39130 JG |
2473 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
2474 | unsigned int n_hc) | |
101ffae2 JG |
2475 | { |
2476 | void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS; | |
2477 | int i, rc = 0; | |
2478 | u32 t; | |
2479 | ||
2480 | /* Following procedure defined in PCI "main command and status | |
2481 | * register" table. | |
2482 | */ | |
2483 | t = readl(reg); | |
2484 | writel(t | STOP_PCI_MASTER, reg); | |
2485 | ||
2486 | for (i = 0; i < 1000; i++) { | |
2487 | udelay(1); | |
2488 | t = readl(reg); | |
2dcb407e | 2489 | if (PCI_MASTER_EMPTY & t) |
101ffae2 | 2490 | break; |
101ffae2 JG |
2491 | } |
2492 | if (!(PCI_MASTER_EMPTY & t)) { | |
2493 | printk(KERN_ERR DRV_NAME ": PCI master won't flush\n"); | |
2494 | rc = 1; | |
2495 | goto done; | |
2496 | } | |
2497 | ||
2498 | /* set reset */ | |
2499 | i = 5; | |
2500 | do { | |
2501 | writel(t | GLOB_SFT_RST, reg); | |
2502 | t = readl(reg); | |
2503 | udelay(1); | |
2504 | } while (!(GLOB_SFT_RST & t) && (i-- > 0)); | |
2505 | ||
2506 | if (!(GLOB_SFT_RST & t)) { | |
2507 | printk(KERN_ERR DRV_NAME ": can't set global reset\n"); | |
2508 | rc = 1; | |
2509 | goto done; | |
2510 | } | |
2511 | ||
2512 | /* clear reset and *reenable the PCI master* (not mentioned in spec) */ | |
2513 | i = 5; | |
2514 | do { | |
2515 | writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg); | |
2516 | t = readl(reg); | |
2517 | udelay(1); | |
2518 | } while ((GLOB_SFT_RST & t) && (i-- > 0)); | |
2519 | ||
2520 | if (GLOB_SFT_RST & t) { | |
2521 | printk(KERN_ERR DRV_NAME ": can't clear global reset\n"); | |
2522 | rc = 1; | |
2523 | } | |
2524 | done: | |
2525 | return rc; | |
2526 | } | |
2527 | ||
47c2b677 | 2528 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, |
ba3fe8fb JG |
2529 | void __iomem *mmio) |
2530 | { | |
2531 | void __iomem *port_mmio; | |
2532 | u32 tmp; | |
2533 | ||
8e7decdb | 2534 | tmp = readl(mmio + MV_RESET_CFG_OFS); |
ba3fe8fb | 2535 | if ((tmp & (1 << 0)) == 0) { |
47c2b677 | 2536 | hpriv->signal[idx].amps = 0x7 << 8; |
ba3fe8fb JG |
2537 | hpriv->signal[idx].pre = 0x1 << 5; |
2538 | return; | |
2539 | } | |
2540 | ||
2541 | port_mmio = mv_port_base(mmio, idx); | |
2542 | tmp = readl(port_mmio + PHY_MODE2); | |
2543 | ||
2544 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ | |
2545 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ | |
2546 | } | |
2547 | ||
47c2b677 | 2548 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) |
ba3fe8fb | 2549 | { |
8e7decdb | 2550 | writel(0x00000060, mmio + MV_GPIO_PORT_CTL_OFS); |
ba3fe8fb JG |
2551 | } |
2552 | ||
c9d39130 | 2553 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
2a47ce06 | 2554 | unsigned int port) |
bca1c4eb | 2555 | { |
c9d39130 JG |
2556 | void __iomem *port_mmio = mv_port_base(mmio, port); |
2557 | ||
bca1c4eb | 2558 | u32 hp_flags = hpriv->hp_flags; |
47c2b677 JG |
2559 | int fix_phy_mode2 = |
2560 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); | |
bca1c4eb | 2561 | int fix_phy_mode4 = |
47c2b677 | 2562 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); |
8c30a8b9 | 2563 | u32 m2, m3; |
47c2b677 JG |
2564 | |
2565 | if (fix_phy_mode2) { | |
2566 | m2 = readl(port_mmio + PHY_MODE2); | |
2567 | m2 &= ~(1 << 16); | |
2568 | m2 |= (1 << 31); | |
2569 | writel(m2, port_mmio + PHY_MODE2); | |
2570 | ||
2571 | udelay(200); | |
2572 | ||
2573 | m2 = readl(port_mmio + PHY_MODE2); | |
2574 | m2 &= ~((1 << 16) | (1 << 31)); | |
2575 | writel(m2, port_mmio + PHY_MODE2); | |
2576 | ||
2577 | udelay(200); | |
2578 | } | |
2579 | ||
8c30a8b9 ML |
2580 | /* |
2581 | * Gen-II/IIe PHY_MODE3 errata RM#2: | |
2582 | * Achieves better receiver noise performance than the h/w default: | |
2583 | */ | |
2584 | m3 = readl(port_mmio + PHY_MODE3); | |
2585 | m3 = (m3 & 0x1f) | (0x5555601 << 5); | |
bca1c4eb | 2586 | |
0388a8c0 ML |
2587 | /* Guideline 88F5182 (GL# SATA-S11) */ |
2588 | if (IS_SOC(hpriv)) | |
2589 | m3 &= ~0x1c; | |
2590 | ||
bca1c4eb | 2591 | if (fix_phy_mode4) { |
ba069e37 ML |
2592 | u32 m4 = readl(port_mmio + PHY_MODE4); |
2593 | /* | |
2594 | * Enforce reserved-bit restrictions on GenIIe devices only. | |
2595 | * For earlier chipsets, force only the internal config field | |
2596 | * (workaround for errata FEr SATA#10 part 1). | |
2597 | */ | |
8c30a8b9 | 2598 | if (IS_GEN_IIE(hpriv)) |
ba069e37 ML |
2599 | m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES; |
2600 | else | |
2601 | m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE; | |
8c30a8b9 | 2602 | writel(m4, port_mmio + PHY_MODE4); |
bca1c4eb | 2603 | } |
b406c7a6 ML |
2604 | /* |
2605 | * Workaround for 60x1-B2 errata SATA#13: | |
2606 | * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3, | |
2607 | * so we must always rewrite PHY_MODE3 after PHY_MODE4. | |
2608 | */ | |
2609 | writel(m3, port_mmio + PHY_MODE3); | |
bca1c4eb JG |
2610 | |
2611 | /* Revert values of pre-emphasis and signal amps to the saved ones */ | |
2612 | m2 = readl(port_mmio + PHY_MODE2); | |
2613 | ||
2614 | m2 &= ~MV_M2_PREAMP_MASK; | |
2a47ce06 JG |
2615 | m2 |= hpriv->signal[port].amps; |
2616 | m2 |= hpriv->signal[port].pre; | |
47c2b677 | 2617 | m2 &= ~(1 << 16); |
bca1c4eb | 2618 | |
e4e7b892 JG |
2619 | /* according to mvSata 3.6.1, some IIE values are fixed */ |
2620 | if (IS_GEN_IIE(hpriv)) { | |
2621 | m2 &= ~0xC30FF01F; | |
2622 | m2 |= 0x0000900F; | |
2623 | } | |
2624 | ||
bca1c4eb JG |
2625 | writel(m2, port_mmio + PHY_MODE2); |
2626 | } | |
2627 | ||
f351b2d6 SB |
2628 | /* TODO: use the generic LED interface to configure the SATA Presence */ |
2629 | /* & Acitivy LEDs on the board */ | |
2630 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, | |
2631 | void __iomem *mmio) | |
2632 | { | |
2633 | return; | |
2634 | } | |
2635 | ||
2636 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, | |
2637 | void __iomem *mmio) | |
2638 | { | |
2639 | void __iomem *port_mmio; | |
2640 | u32 tmp; | |
2641 | ||
2642 | port_mmio = mv_port_base(mmio, idx); | |
2643 | tmp = readl(port_mmio + PHY_MODE2); | |
2644 | ||
2645 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ | |
2646 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ | |
2647 | } | |
2648 | ||
2649 | #undef ZERO | |
2650 | #define ZERO(reg) writel(0, port_mmio + (reg)) | |
2651 | static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv, | |
2652 | void __iomem *mmio, unsigned int port) | |
2653 | { | |
2654 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
2655 | ||
e12bef50 | 2656 | mv_reset_channel(hpriv, mmio, port); |
f351b2d6 SB |
2657 | |
2658 | ZERO(0x028); /* command */ | |
2659 | writel(0x101f, port_mmio + EDMA_CFG_OFS); | |
2660 | ZERO(0x004); /* timer */ | |
2661 | ZERO(0x008); /* irq err cause */ | |
2662 | ZERO(0x00c); /* irq err mask */ | |
2663 | ZERO(0x010); /* rq bah */ | |
2664 | ZERO(0x014); /* rq inp */ | |
2665 | ZERO(0x018); /* rq outp */ | |
2666 | ZERO(0x01c); /* respq bah */ | |
2667 | ZERO(0x024); /* respq outp */ | |
2668 | ZERO(0x020); /* respq inp */ | |
2669 | ZERO(0x02c); /* test control */ | |
8e7decdb | 2670 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS); |
f351b2d6 SB |
2671 | } |
2672 | ||
2673 | #undef ZERO | |
2674 | ||
2675 | #define ZERO(reg) writel(0, hc_mmio + (reg)) | |
2676 | static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv, | |
2677 | void __iomem *mmio) | |
2678 | { | |
2679 | void __iomem *hc_mmio = mv_hc_base(mmio, 0); | |
2680 | ||
2681 | ZERO(0x00c); | |
2682 | ZERO(0x010); | |
2683 | ZERO(0x014); | |
2684 | ||
2685 | } | |
2686 | ||
2687 | #undef ZERO | |
2688 | ||
2689 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, | |
2690 | void __iomem *mmio, unsigned int n_hc) | |
2691 | { | |
2692 | unsigned int port; | |
2693 | ||
2694 | for (port = 0; port < hpriv->n_ports; port++) | |
2695 | mv_soc_reset_hc_port(hpriv, mmio, port); | |
2696 | ||
2697 | mv_soc_reset_one_hc(hpriv, mmio); | |
2698 | ||
2699 | return 0; | |
2700 | } | |
2701 | ||
2702 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, | |
2703 | void __iomem *mmio) | |
2704 | { | |
2705 | return; | |
2706 | } | |
2707 | ||
2708 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio) | |
2709 | { | |
2710 | return; | |
2711 | } | |
2712 | ||
8e7decdb | 2713 | static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i) |
b67a1064 | 2714 | { |
8e7decdb | 2715 | u32 ifcfg = readl(port_mmio + SATA_INTERFACE_CFG_OFS); |
b67a1064 | 2716 | |
8e7decdb | 2717 | ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */ |
b67a1064 | 2718 | if (want_gen2i) |
8e7decdb ML |
2719 | ifcfg |= (1 << 7); /* enable gen2i speed */ |
2720 | writelfl(ifcfg, port_mmio + SATA_INTERFACE_CFG_OFS); | |
b67a1064 ML |
2721 | } |
2722 | ||
e12bef50 | 2723 | static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, |
c9d39130 JG |
2724 | unsigned int port_no) |
2725 | { | |
2726 | void __iomem *port_mmio = mv_port_base(mmio, port_no); | |
2727 | ||
8e7decdb ML |
2728 | /* |
2729 | * The datasheet warns against setting EDMA_RESET when EDMA is active | |
2730 | * (but doesn't say what the problem might be). So we first try | |
2731 | * to disable the EDMA engine before doing the EDMA_RESET operation. | |
2732 | */ | |
0d8be5cb | 2733 | mv_stop_edma_engine(port_mmio); |
8e7decdb | 2734 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS); |
c9d39130 | 2735 | |
b67a1064 | 2736 | if (!IS_GEN_I(hpriv)) { |
8e7decdb ML |
2737 | /* Enable 3.0gb/s link speed: this survives EDMA_RESET */ |
2738 | mv_setup_ifcfg(port_mmio, 1); | |
c9d39130 | 2739 | } |
b67a1064 | 2740 | /* |
8e7decdb | 2741 | * Strobing EDMA_RESET here causes a hard reset of the SATA transport, |
b67a1064 ML |
2742 | * link, and physical layers. It resets all SATA interface registers |
2743 | * (except for SATA_INTERFACE_CFG), and issues a COMRESET to the dev. | |
c9d39130 | 2744 | */ |
8e7decdb | 2745 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS); |
b67a1064 | 2746 | udelay(25); /* allow reset propagation */ |
c9d39130 JG |
2747 | writelfl(0, port_mmio + EDMA_CMD_OFS); |
2748 | ||
2749 | hpriv->ops->phy_errata(hpriv, mmio, port_no); | |
2750 | ||
ee9ccdf7 | 2751 | if (IS_GEN_I(hpriv)) |
c9d39130 JG |
2752 | mdelay(1); |
2753 | } | |
2754 | ||
e49856d8 | 2755 | static void mv_pmp_select(struct ata_port *ap, int pmp) |
20f733e7 | 2756 | { |
e49856d8 ML |
2757 | if (sata_pmp_supported(ap)) { |
2758 | void __iomem *port_mmio = mv_ap_base(ap); | |
2759 | u32 reg = readl(port_mmio + SATA_IFCTL_OFS); | |
2760 | int old = reg & 0xf; | |
22374677 | 2761 | |
e49856d8 ML |
2762 | if (old != pmp) { |
2763 | reg = (reg & ~0xf) | pmp; | |
2764 | writelfl(reg, port_mmio + SATA_IFCTL_OFS); | |
2765 | } | |
22374677 | 2766 | } |
20f733e7 BR |
2767 | } |
2768 | ||
e49856d8 ML |
2769 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, |
2770 | unsigned long deadline) | |
22374677 | 2771 | { |
e49856d8 ML |
2772 | mv_pmp_select(link->ap, sata_srst_pmp(link)); |
2773 | return sata_std_hardreset(link, class, deadline); | |
2774 | } | |
bdd4ddde | 2775 | |
e49856d8 ML |
2776 | static int mv_softreset(struct ata_link *link, unsigned int *class, |
2777 | unsigned long deadline) | |
2778 | { | |
2779 | mv_pmp_select(link->ap, sata_srst_pmp(link)); | |
2780 | return ata_sff_softreset(link, class, deadline); | |
22374677 JG |
2781 | } |
2782 | ||
cc0680a5 | 2783 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
bdd4ddde | 2784 | unsigned long deadline) |
31961943 | 2785 | { |
cc0680a5 | 2786 | struct ata_port *ap = link->ap; |
bdd4ddde | 2787 | struct mv_host_priv *hpriv = ap->host->private_data; |
b562468c | 2788 | struct mv_port_priv *pp = ap->private_data; |
f351b2d6 | 2789 | void __iomem *mmio = hpriv->base; |
0d8be5cb ML |
2790 | int rc, attempts = 0, extra = 0; |
2791 | u32 sstatus; | |
2792 | bool online; | |
31961943 | 2793 | |
e12bef50 | 2794 | mv_reset_channel(hpriv, mmio, ap->port_no); |
b562468c | 2795 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
bdd4ddde | 2796 | |
0d8be5cb ML |
2797 | /* Workaround for errata FEr SATA#10 (part 2) */ |
2798 | do { | |
17c5aab5 ML |
2799 | const unsigned long *timing = |
2800 | sata_ehc_deb_timing(&link->eh_context); | |
bdd4ddde | 2801 | |
17c5aab5 ML |
2802 | rc = sata_link_hardreset(link, timing, deadline + extra, |
2803 | &online, NULL); | |
9dcffd99 | 2804 | rc = online ? -EAGAIN : rc; |
17c5aab5 | 2805 | if (rc) |
0d8be5cb | 2806 | return rc; |
0d8be5cb ML |
2807 | sata_scr_read(link, SCR_STATUS, &sstatus); |
2808 | if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) { | |
2809 | /* Force 1.5gb/s link speed and try again */ | |
8e7decdb | 2810 | mv_setup_ifcfg(mv_ap_base(ap), 0); |
0d8be5cb ML |
2811 | if (time_after(jiffies + HZ, deadline)) |
2812 | extra = HZ; /* only extend it once, max */ | |
2813 | } | |
2814 | } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123); | |
bdd4ddde | 2815 | |
17c5aab5 | 2816 | return rc; |
bdd4ddde JG |
2817 | } |
2818 | ||
bdd4ddde JG |
2819 | static void mv_eh_freeze(struct ata_port *ap) |
2820 | { | |
1cfd19ae | 2821 | mv_stop_edma(ap); |
c4de573b | 2822 | mv_enable_port_irqs(ap, 0); |
bdd4ddde JG |
2823 | } |
2824 | ||
2825 | static void mv_eh_thaw(struct ata_port *ap) | |
2826 | { | |
f351b2d6 | 2827 | struct mv_host_priv *hpriv = ap->host->private_data; |
c4de573b ML |
2828 | unsigned int port = ap->port_no; |
2829 | unsigned int hardport = mv_hardport_from_port(port); | |
1cfd19ae | 2830 | void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port); |
bdd4ddde | 2831 | void __iomem *port_mmio = mv_ap_base(ap); |
c4de573b | 2832 | u32 hc_irq_cause; |
bdd4ddde | 2833 | |
bdd4ddde JG |
2834 | /* clear EDMA errors on this port */ |
2835 | writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); | |
2836 | ||
2837 | /* clear pending irq events */ | |
2838 | hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS); | |
1cfd19ae ML |
2839 | hc_irq_cause &= ~((DEV_IRQ | DMA_IRQ) << hardport); |
2840 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS); | |
bdd4ddde | 2841 | |
88e675e1 | 2842 | mv_enable_port_irqs(ap, ERR_IRQ); |
31961943 BR |
2843 | } |
2844 | ||
05b308e1 BR |
2845 | /** |
2846 | * mv_port_init - Perform some early initialization on a single port. | |
2847 | * @port: libata data structure storing shadow register addresses | |
2848 | * @port_mmio: base address of the port | |
2849 | * | |
2850 | * Initialize shadow register mmio addresses, clear outstanding | |
2851 | * interrupts on the port, and unmask interrupts for the future | |
2852 | * start of the port. | |
2853 | * | |
2854 | * LOCKING: | |
2855 | * Inherited from caller. | |
2856 | */ | |
31961943 | 2857 | static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio) |
20f733e7 | 2858 | { |
0d5ff566 | 2859 | void __iomem *shd_base = port_mmio + SHD_BLK_OFS; |
31961943 BR |
2860 | unsigned serr_ofs; |
2861 | ||
8b260248 | 2862 | /* PIO related setup |
31961943 BR |
2863 | */ |
2864 | port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA); | |
8b260248 | 2865 | port->error_addr = |
31961943 BR |
2866 | port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR); |
2867 | port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT); | |
2868 | port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL); | |
2869 | port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM); | |
2870 | port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH); | |
2871 | port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE); | |
8b260248 | 2872 | port->status_addr = |
31961943 BR |
2873 | port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS); |
2874 | /* special case: control/altstatus doesn't have ATA_REG_ address */ | |
2875 | port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS; | |
2876 | ||
2877 | /* unused: */ | |
8d9db2d2 | 2878 | port->cmd_addr = port->bmdma_addr = port->scr_addr = NULL; |
20f733e7 | 2879 | |
31961943 BR |
2880 | /* Clear any currently outstanding port interrupt conditions */ |
2881 | serr_ofs = mv_scr_offset(SCR_ERROR); | |
2882 | writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs); | |
2883 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); | |
2884 | ||
646a4da5 ML |
2885 | /* unmask all non-transient EDMA error interrupts */ |
2886 | writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK_OFS); | |
20f733e7 | 2887 | |
8b260248 | 2888 | VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n", |
31961943 BR |
2889 | readl(port_mmio + EDMA_CFG_OFS), |
2890 | readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS), | |
2891 | readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS)); | |
20f733e7 BR |
2892 | } |
2893 | ||
616d4a98 ML |
2894 | static unsigned int mv_in_pcix_mode(struct ata_host *host) |
2895 | { | |
2896 | struct mv_host_priv *hpriv = host->private_data; | |
2897 | void __iomem *mmio = hpriv->base; | |
2898 | u32 reg; | |
2899 | ||
1f398472 | 2900 | if (IS_SOC(hpriv) || !IS_PCIE(hpriv)) |
616d4a98 ML |
2901 | return 0; /* not PCI-X capable */ |
2902 | reg = readl(mmio + MV_PCI_MODE_OFS); | |
2903 | if ((reg & MV_PCI_MODE_MASK) == 0) | |
2904 | return 0; /* conventional PCI mode */ | |
2905 | return 1; /* chip is in PCI-X mode */ | |
2906 | } | |
2907 | ||
2908 | static int mv_pci_cut_through_okay(struct ata_host *host) | |
2909 | { | |
2910 | struct mv_host_priv *hpriv = host->private_data; | |
2911 | void __iomem *mmio = hpriv->base; | |
2912 | u32 reg; | |
2913 | ||
2914 | if (!mv_in_pcix_mode(host)) { | |
2915 | reg = readl(mmio + PCI_COMMAND_OFS); | |
2916 | if (reg & PCI_COMMAND_MRDTRIG) | |
2917 | return 0; /* not okay */ | |
2918 | } | |
2919 | return 1; /* okay */ | |
2920 | } | |
2921 | ||
4447d351 | 2922 | static int mv_chip_id(struct ata_host *host, unsigned int board_idx) |
bca1c4eb | 2923 | { |
4447d351 TH |
2924 | struct pci_dev *pdev = to_pci_dev(host->dev); |
2925 | struct mv_host_priv *hpriv = host->private_data; | |
bca1c4eb JG |
2926 | u32 hp_flags = hpriv->hp_flags; |
2927 | ||
5796d1c4 | 2928 | switch (board_idx) { |
47c2b677 JG |
2929 | case chip_5080: |
2930 | hpriv->ops = &mv5xxx_ops; | |
ee9ccdf7 | 2931 | hp_flags |= MV_HP_GEN_I; |
47c2b677 | 2932 | |
44c10138 | 2933 | switch (pdev->revision) { |
47c2b677 JG |
2934 | case 0x1: |
2935 | hp_flags |= MV_HP_ERRATA_50XXB0; | |
2936 | break; | |
2937 | case 0x3: | |
2938 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
2939 | break; | |
2940 | default: | |
2941 | dev_printk(KERN_WARNING, &pdev->dev, | |
2942 | "Applying 50XXB2 workarounds to unknown rev\n"); | |
2943 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
2944 | break; | |
2945 | } | |
2946 | break; | |
2947 | ||
bca1c4eb JG |
2948 | case chip_504x: |
2949 | case chip_508x: | |
47c2b677 | 2950 | hpriv->ops = &mv5xxx_ops; |
ee9ccdf7 | 2951 | hp_flags |= MV_HP_GEN_I; |
bca1c4eb | 2952 | |
44c10138 | 2953 | switch (pdev->revision) { |
47c2b677 JG |
2954 | case 0x0: |
2955 | hp_flags |= MV_HP_ERRATA_50XXB0; | |
2956 | break; | |
2957 | case 0x3: | |
2958 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
2959 | break; | |
2960 | default: | |
2961 | dev_printk(KERN_WARNING, &pdev->dev, | |
2962 | "Applying B2 workarounds to unknown rev\n"); | |
2963 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
2964 | break; | |
bca1c4eb JG |
2965 | } |
2966 | break; | |
2967 | ||
2968 | case chip_604x: | |
2969 | case chip_608x: | |
47c2b677 | 2970 | hpriv->ops = &mv6xxx_ops; |
ee9ccdf7 | 2971 | hp_flags |= MV_HP_GEN_II; |
47c2b677 | 2972 | |
44c10138 | 2973 | switch (pdev->revision) { |
47c2b677 JG |
2974 | case 0x7: |
2975 | hp_flags |= MV_HP_ERRATA_60X1B2; | |
2976 | break; | |
2977 | case 0x9: | |
2978 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
bca1c4eb JG |
2979 | break; |
2980 | default: | |
2981 | dev_printk(KERN_WARNING, &pdev->dev, | |
47c2b677 JG |
2982 | "Applying B2 workarounds to unknown rev\n"); |
2983 | hp_flags |= MV_HP_ERRATA_60X1B2; | |
bca1c4eb JG |
2984 | break; |
2985 | } | |
2986 | break; | |
2987 | ||
e4e7b892 | 2988 | case chip_7042: |
616d4a98 | 2989 | hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH; |
306b30f7 ML |
2990 | if (pdev->vendor == PCI_VENDOR_ID_TTI && |
2991 | (pdev->device == 0x2300 || pdev->device == 0x2310)) | |
2992 | { | |
4e520033 ML |
2993 | /* |
2994 | * Highpoint RocketRAID PCIe 23xx series cards: | |
2995 | * | |
2996 | * Unconfigured drives are treated as "Legacy" | |
2997 | * by the BIOS, and it overwrites sector 8 with | |
2998 | * a "Lgcy" metadata block prior to Linux boot. | |
2999 | * | |
3000 | * Configured drives (RAID or JBOD) leave sector 8 | |
3001 | * alone, but instead overwrite a high numbered | |
3002 | * sector for the RAID metadata. This sector can | |
3003 | * be determined exactly, by truncating the physical | |
3004 | * drive capacity to a nice even GB value. | |
3005 | * | |
3006 | * RAID metadata is at: (dev->n_sectors & ~0xfffff) | |
3007 | * | |
3008 | * Warn the user, lest they think we're just buggy. | |
3009 | */ | |
3010 | printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID" | |
3011 | " BIOS CORRUPTS DATA on all attached drives," | |
3012 | " regardless of if/how they are configured." | |
3013 | " BEWARE!\n"); | |
3014 | printk(KERN_WARNING DRV_NAME ": For data safety, do not" | |
3015 | " use sectors 8-9 on \"Legacy\" drives," | |
3016 | " and avoid the final two gigabytes on" | |
3017 | " all RocketRAID BIOS initialized drives.\n"); | |
306b30f7 | 3018 | } |
8e7decdb | 3019 | /* drop through */ |
e4e7b892 JG |
3020 | case chip_6042: |
3021 | hpriv->ops = &mv6xxx_ops; | |
e4e7b892 | 3022 | hp_flags |= MV_HP_GEN_IIE; |
616d4a98 ML |
3023 | if (board_idx == chip_6042 && mv_pci_cut_through_okay(host)) |
3024 | hp_flags |= MV_HP_CUT_THROUGH; | |
e4e7b892 | 3025 | |
44c10138 | 3026 | switch (pdev->revision) { |
5cf73bfb | 3027 | case 0x2: /* Rev.B0: the first/only public release */ |
e4e7b892 JG |
3028 | hp_flags |= MV_HP_ERRATA_60X1C0; |
3029 | break; | |
3030 | default: | |
3031 | dev_printk(KERN_WARNING, &pdev->dev, | |
3032 | "Applying 60X1C0 workarounds to unknown rev\n"); | |
3033 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
3034 | break; | |
3035 | } | |
3036 | break; | |
f351b2d6 SB |
3037 | case chip_soc: |
3038 | hpriv->ops = &mv_soc_ops; | |
1f398472 | 3039 | hp_flags |= MV_HP_FLAG_SOC | MV_HP_ERRATA_60X1C0; |
f351b2d6 | 3040 | break; |
e4e7b892 | 3041 | |
bca1c4eb | 3042 | default: |
f351b2d6 | 3043 | dev_printk(KERN_ERR, host->dev, |
5796d1c4 | 3044 | "BUG: invalid board index %u\n", board_idx); |
bca1c4eb JG |
3045 | return 1; |
3046 | } | |
3047 | ||
3048 | hpriv->hp_flags = hp_flags; | |
02a121da ML |
3049 | if (hp_flags & MV_HP_PCIE) { |
3050 | hpriv->irq_cause_ofs = PCIE_IRQ_CAUSE_OFS; | |
3051 | hpriv->irq_mask_ofs = PCIE_IRQ_MASK_OFS; | |
3052 | hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS; | |
3053 | } else { | |
3054 | hpriv->irq_cause_ofs = PCI_IRQ_CAUSE_OFS; | |
3055 | hpriv->irq_mask_ofs = PCI_IRQ_MASK_OFS; | |
3056 | hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS; | |
3057 | } | |
bca1c4eb JG |
3058 | |
3059 | return 0; | |
3060 | } | |
3061 | ||
05b308e1 | 3062 | /** |
47c2b677 | 3063 | * mv_init_host - Perform some early initialization of the host. |
4447d351 TH |
3064 | * @host: ATA host to initialize |
3065 | * @board_idx: controller index | |
05b308e1 BR |
3066 | * |
3067 | * If possible, do an early global reset of the host. Then do | |
3068 | * our port init and clear/unmask all/relevant host interrupts. | |
3069 | * | |
3070 | * LOCKING: | |
3071 | * Inherited from caller. | |
3072 | */ | |
4447d351 | 3073 | static int mv_init_host(struct ata_host *host, unsigned int board_idx) |
20f733e7 BR |
3074 | { |
3075 | int rc = 0, n_hc, port, hc; | |
4447d351 | 3076 | struct mv_host_priv *hpriv = host->private_data; |
f351b2d6 | 3077 | void __iomem *mmio = hpriv->base; |
47c2b677 | 3078 | |
4447d351 | 3079 | rc = mv_chip_id(host, board_idx); |
bca1c4eb | 3080 | if (rc) |
352fab70 | 3081 | goto done; |
f351b2d6 | 3082 | |
1f398472 | 3083 | if (IS_SOC(hpriv)) { |
7368f919 ML |
3084 | hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE_OFS; |
3085 | hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK_OFS; | |
1f398472 ML |
3086 | } else { |
3087 | hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE_OFS; | |
3088 | hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK_OFS; | |
f351b2d6 | 3089 | } |
352fab70 ML |
3090 | |
3091 | /* global interrupt mask: 0 == mask everything */ | |
c4de573b | 3092 | mv_set_main_irq_mask(host, ~0, 0); |
bca1c4eb | 3093 | |
4447d351 | 3094 | n_hc = mv_get_hc_count(host->ports[0]->flags); |
bca1c4eb | 3095 | |
4447d351 | 3096 | for (port = 0; port < host->n_ports; port++) |
47c2b677 | 3097 | hpriv->ops->read_preamp(hpriv, port, mmio); |
20f733e7 | 3098 | |
c9d39130 | 3099 | rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc); |
47c2b677 | 3100 | if (rc) |
20f733e7 | 3101 | goto done; |
20f733e7 | 3102 | |
522479fb | 3103 | hpriv->ops->reset_flash(hpriv, mmio); |
7bb3c529 | 3104 | hpriv->ops->reset_bus(host, mmio); |
47c2b677 | 3105 | hpriv->ops->enable_leds(hpriv, mmio); |
20f733e7 | 3106 | |
4447d351 | 3107 | for (port = 0; port < host->n_ports; port++) { |
cbcdd875 | 3108 | struct ata_port *ap = host->ports[port]; |
2a47ce06 | 3109 | void __iomem *port_mmio = mv_port_base(mmio, port); |
cbcdd875 TH |
3110 | |
3111 | mv_port_init(&ap->ioaddr, port_mmio); | |
3112 | ||
7bb3c529 | 3113 | #ifdef CONFIG_PCI |
1f398472 | 3114 | if (!IS_SOC(hpriv)) { |
f351b2d6 SB |
3115 | unsigned int offset = port_mmio - mmio; |
3116 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio"); | |
3117 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port"); | |
3118 | } | |
7bb3c529 | 3119 | #endif |
20f733e7 BR |
3120 | } |
3121 | ||
3122 | for (hc = 0; hc < n_hc; hc++) { | |
31961943 BR |
3123 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
3124 | ||
3125 | VPRINTK("HC%i: HC config=0x%08x HC IRQ cause " | |
3126 | "(before clear)=0x%08x\n", hc, | |
3127 | readl(hc_mmio + HC_CFG_OFS), | |
3128 | readl(hc_mmio + HC_IRQ_CAUSE_OFS)); | |
3129 | ||
3130 | /* Clear any currently outstanding hc interrupt conditions */ | |
3131 | writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS); | |
20f733e7 BR |
3132 | } |
3133 | ||
1f398472 | 3134 | if (!IS_SOC(hpriv)) { |
f351b2d6 SB |
3135 | /* Clear any currently outstanding host interrupt conditions */ |
3136 | writelfl(0, mmio + hpriv->irq_cause_ofs); | |
31961943 | 3137 | |
f351b2d6 SB |
3138 | /* and unmask interrupt generation for host regs */ |
3139 | writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_ofs); | |
51de32d2 ML |
3140 | |
3141 | /* | |
3142 | * enable only global host interrupts for now. | |
3143 | * The per-port interrupts get done later as ports are set up. | |
3144 | */ | |
c4de573b | 3145 | mv_set_main_irq_mask(host, 0, PCI_ERR); |
f351b2d6 SB |
3146 | } |
3147 | done: | |
3148 | return rc; | |
3149 | } | |
fb621e2f | 3150 | |
fbf14e2f BB |
3151 | static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev) |
3152 | { | |
3153 | hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ, | |
3154 | MV_CRQB_Q_SZ, 0); | |
3155 | if (!hpriv->crqb_pool) | |
3156 | return -ENOMEM; | |
3157 | ||
3158 | hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ, | |
3159 | MV_CRPB_Q_SZ, 0); | |
3160 | if (!hpriv->crpb_pool) | |
3161 | return -ENOMEM; | |
3162 | ||
3163 | hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ, | |
3164 | MV_SG_TBL_SZ, 0); | |
3165 | if (!hpriv->sg_tbl_pool) | |
3166 | return -ENOMEM; | |
3167 | ||
3168 | return 0; | |
3169 | } | |
3170 | ||
15a32632 LB |
3171 | static void mv_conf_mbus_windows(struct mv_host_priv *hpriv, |
3172 | struct mbus_dram_target_info *dram) | |
3173 | { | |
3174 | int i; | |
3175 | ||
3176 | for (i = 0; i < 4; i++) { | |
3177 | writel(0, hpriv->base + WINDOW_CTRL(i)); | |
3178 | writel(0, hpriv->base + WINDOW_BASE(i)); | |
3179 | } | |
3180 | ||
3181 | for (i = 0; i < dram->num_cs; i++) { | |
3182 | struct mbus_dram_window *cs = dram->cs + i; | |
3183 | ||
3184 | writel(((cs->size - 1) & 0xffff0000) | | |
3185 | (cs->mbus_attr << 8) | | |
3186 | (dram->mbus_dram_target_id << 4) | 1, | |
3187 | hpriv->base + WINDOW_CTRL(i)); | |
3188 | writel(cs->base, hpriv->base + WINDOW_BASE(i)); | |
3189 | } | |
3190 | } | |
3191 | ||
f351b2d6 SB |
3192 | /** |
3193 | * mv_platform_probe - handle a positive probe of an soc Marvell | |
3194 | * host | |
3195 | * @pdev: platform device found | |
3196 | * | |
3197 | * LOCKING: | |
3198 | * Inherited from caller. | |
3199 | */ | |
3200 | static int mv_platform_probe(struct platform_device *pdev) | |
3201 | { | |
3202 | static int printed_version; | |
3203 | const struct mv_sata_platform_data *mv_platform_data; | |
3204 | const struct ata_port_info *ppi[] = | |
3205 | { &mv_port_info[chip_soc], NULL }; | |
3206 | struct ata_host *host; | |
3207 | struct mv_host_priv *hpriv; | |
3208 | struct resource *res; | |
3209 | int n_ports, rc; | |
20f733e7 | 3210 | |
f351b2d6 SB |
3211 | if (!printed_version++) |
3212 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); | |
bca1c4eb | 3213 | |
f351b2d6 SB |
3214 | /* |
3215 | * Simple resource validation .. | |
3216 | */ | |
3217 | if (unlikely(pdev->num_resources != 2)) { | |
3218 | dev_err(&pdev->dev, "invalid number of resources\n"); | |
3219 | return -EINVAL; | |
3220 | } | |
3221 | ||
3222 | /* | |
3223 | * Get the register base first | |
3224 | */ | |
3225 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
3226 | if (res == NULL) | |
3227 | return -EINVAL; | |
3228 | ||
3229 | /* allocate host */ | |
3230 | mv_platform_data = pdev->dev.platform_data; | |
3231 | n_ports = mv_platform_data->n_ports; | |
3232 | ||
3233 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
3234 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
3235 | ||
3236 | if (!host || !hpriv) | |
3237 | return -ENOMEM; | |
3238 | host->private_data = hpriv; | |
3239 | hpriv->n_ports = n_ports; | |
3240 | ||
3241 | host->iomap = NULL; | |
f1cb0ea1 SB |
3242 | hpriv->base = devm_ioremap(&pdev->dev, res->start, |
3243 | res->end - res->start + 1); | |
f351b2d6 SB |
3244 | hpriv->base -= MV_SATAHC0_REG_BASE; |
3245 | ||
15a32632 LB |
3246 | /* |
3247 | * (Re-)program MBUS remapping windows if we are asked to. | |
3248 | */ | |
3249 | if (mv_platform_data->dram != NULL) | |
3250 | mv_conf_mbus_windows(hpriv, mv_platform_data->dram); | |
3251 | ||
fbf14e2f BB |
3252 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
3253 | if (rc) | |
3254 | return rc; | |
3255 | ||
f351b2d6 SB |
3256 | /* initialize adapter */ |
3257 | rc = mv_init_host(host, chip_soc); | |
3258 | if (rc) | |
3259 | return rc; | |
3260 | ||
3261 | dev_printk(KERN_INFO, &pdev->dev, | |
3262 | "slots %u ports %d\n", (unsigned)MV_MAX_Q_DEPTH, | |
3263 | host->n_ports); | |
3264 | ||
3265 | return ata_host_activate(host, platform_get_irq(pdev, 0), mv_interrupt, | |
3266 | IRQF_SHARED, &mv6_sht); | |
3267 | } | |
3268 | ||
3269 | /* | |
3270 | * | |
3271 | * mv_platform_remove - unplug a platform interface | |
3272 | * @pdev: platform device | |
3273 | * | |
3274 | * A platform bus SATA device has been unplugged. Perform the needed | |
3275 | * cleanup. Also called on module unload for any active devices. | |
3276 | */ | |
3277 | static int __devexit mv_platform_remove(struct platform_device *pdev) | |
3278 | { | |
3279 | struct device *dev = &pdev->dev; | |
3280 | struct ata_host *host = dev_get_drvdata(dev); | |
f351b2d6 SB |
3281 | |
3282 | ata_host_detach(host); | |
f351b2d6 | 3283 | return 0; |
20f733e7 BR |
3284 | } |
3285 | ||
f351b2d6 SB |
3286 | static struct platform_driver mv_platform_driver = { |
3287 | .probe = mv_platform_probe, | |
3288 | .remove = __devexit_p(mv_platform_remove), | |
3289 | .driver = { | |
3290 | .name = DRV_NAME, | |
3291 | .owner = THIS_MODULE, | |
3292 | }, | |
3293 | }; | |
3294 | ||
3295 | ||
7bb3c529 | 3296 | #ifdef CONFIG_PCI |
f351b2d6 SB |
3297 | static int mv_pci_init_one(struct pci_dev *pdev, |
3298 | const struct pci_device_id *ent); | |
3299 | ||
7bb3c529 SB |
3300 | |
3301 | static struct pci_driver mv_pci_driver = { | |
3302 | .name = DRV_NAME, | |
3303 | .id_table = mv_pci_tbl, | |
f351b2d6 | 3304 | .probe = mv_pci_init_one, |
7bb3c529 SB |
3305 | .remove = ata_pci_remove_one, |
3306 | }; | |
3307 | ||
3308 | /* | |
3309 | * module options | |
3310 | */ | |
3311 | static int msi; /* Use PCI msi; either zero (off, default) or non-zero */ | |
3312 | ||
3313 | ||
3314 | /* move to PCI layer or libata core? */ | |
3315 | static int pci_go_64(struct pci_dev *pdev) | |
3316 | { | |
3317 | int rc; | |
3318 | ||
3319 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { | |
3320 | rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
3321 | if (rc) { | |
3322 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
3323 | if (rc) { | |
3324 | dev_printk(KERN_ERR, &pdev->dev, | |
3325 | "64-bit DMA enable failed\n"); | |
3326 | return rc; | |
3327 | } | |
3328 | } | |
3329 | } else { | |
3330 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
3331 | if (rc) { | |
3332 | dev_printk(KERN_ERR, &pdev->dev, | |
3333 | "32-bit DMA enable failed\n"); | |
3334 | return rc; | |
3335 | } | |
3336 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
3337 | if (rc) { | |
3338 | dev_printk(KERN_ERR, &pdev->dev, | |
3339 | "32-bit consistent DMA enable failed\n"); | |
3340 | return rc; | |
3341 | } | |
3342 | } | |
3343 | ||
3344 | return rc; | |
3345 | } | |
3346 | ||
05b308e1 BR |
3347 | /** |
3348 | * mv_print_info - Dump key info to kernel log for perusal. | |
4447d351 | 3349 | * @host: ATA host to print info about |
05b308e1 BR |
3350 | * |
3351 | * FIXME: complete this. | |
3352 | * | |
3353 | * LOCKING: | |
3354 | * Inherited from caller. | |
3355 | */ | |
4447d351 | 3356 | static void mv_print_info(struct ata_host *host) |
31961943 | 3357 | { |
4447d351 TH |
3358 | struct pci_dev *pdev = to_pci_dev(host->dev); |
3359 | struct mv_host_priv *hpriv = host->private_data; | |
44c10138 | 3360 | u8 scc; |
c1e4fe71 | 3361 | const char *scc_s, *gen; |
31961943 BR |
3362 | |
3363 | /* Use this to determine the HW stepping of the chip so we know | |
3364 | * what errata to workaround | |
3365 | */ | |
31961943 BR |
3366 | pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc); |
3367 | if (scc == 0) | |
3368 | scc_s = "SCSI"; | |
3369 | else if (scc == 0x01) | |
3370 | scc_s = "RAID"; | |
3371 | else | |
c1e4fe71 JG |
3372 | scc_s = "?"; |
3373 | ||
3374 | if (IS_GEN_I(hpriv)) | |
3375 | gen = "I"; | |
3376 | else if (IS_GEN_II(hpriv)) | |
3377 | gen = "II"; | |
3378 | else if (IS_GEN_IIE(hpriv)) | |
3379 | gen = "IIE"; | |
3380 | else | |
3381 | gen = "?"; | |
31961943 | 3382 | |
a9524a76 | 3383 | dev_printk(KERN_INFO, &pdev->dev, |
c1e4fe71 JG |
3384 | "Gen-%s %u slots %u ports %s mode IRQ via %s\n", |
3385 | gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports, | |
31961943 BR |
3386 | scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx"); |
3387 | } | |
3388 | ||
05b308e1 | 3389 | /** |
f351b2d6 | 3390 | * mv_pci_init_one - handle a positive probe of a PCI Marvell host |
05b308e1 BR |
3391 | * @pdev: PCI device found |
3392 | * @ent: PCI device ID entry for the matched host | |
3393 | * | |
3394 | * LOCKING: | |
3395 | * Inherited from caller. | |
3396 | */ | |
f351b2d6 SB |
3397 | static int mv_pci_init_one(struct pci_dev *pdev, |
3398 | const struct pci_device_id *ent) | |
20f733e7 | 3399 | { |
2dcb407e | 3400 | static int printed_version; |
20f733e7 | 3401 | unsigned int board_idx = (unsigned int)ent->driver_data; |
4447d351 TH |
3402 | const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL }; |
3403 | struct ata_host *host; | |
3404 | struct mv_host_priv *hpriv; | |
3405 | int n_ports, rc; | |
20f733e7 | 3406 | |
a9524a76 JG |
3407 | if (!printed_version++) |
3408 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); | |
20f733e7 | 3409 | |
4447d351 TH |
3410 | /* allocate host */ |
3411 | n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC; | |
3412 | ||
3413 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
3414 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
3415 | if (!host || !hpriv) | |
3416 | return -ENOMEM; | |
3417 | host->private_data = hpriv; | |
f351b2d6 | 3418 | hpriv->n_ports = n_ports; |
4447d351 TH |
3419 | |
3420 | /* acquire resources */ | |
24dc5f33 TH |
3421 | rc = pcim_enable_device(pdev); |
3422 | if (rc) | |
20f733e7 | 3423 | return rc; |
20f733e7 | 3424 | |
0d5ff566 TH |
3425 | rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME); |
3426 | if (rc == -EBUSY) | |
24dc5f33 | 3427 | pcim_pin_device(pdev); |
0d5ff566 | 3428 | if (rc) |
24dc5f33 | 3429 | return rc; |
4447d351 | 3430 | host->iomap = pcim_iomap_table(pdev); |
f351b2d6 | 3431 | hpriv->base = host->iomap[MV_PRIMARY_BAR]; |
20f733e7 | 3432 | |
d88184fb JG |
3433 | rc = pci_go_64(pdev); |
3434 | if (rc) | |
3435 | return rc; | |
3436 | ||
da2fa9ba ML |
3437 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
3438 | if (rc) | |
3439 | return rc; | |
3440 | ||
20f733e7 | 3441 | /* initialize adapter */ |
4447d351 | 3442 | rc = mv_init_host(host, board_idx); |
24dc5f33 TH |
3443 | if (rc) |
3444 | return rc; | |
20f733e7 | 3445 | |
31961943 | 3446 | /* Enable interrupts */ |
6a59dcf8 | 3447 | if (msi && pci_enable_msi(pdev)) |
31961943 | 3448 | pci_intx(pdev, 1); |
20f733e7 | 3449 | |
31961943 | 3450 | mv_dump_pci_cfg(pdev, 0x68); |
4447d351 | 3451 | mv_print_info(host); |
20f733e7 | 3452 | |
4447d351 | 3453 | pci_set_master(pdev); |
ea8b4db9 | 3454 | pci_try_set_mwi(pdev); |
4447d351 | 3455 | return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED, |
c5d3e45a | 3456 | IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht); |
20f733e7 | 3457 | } |
7bb3c529 | 3458 | #endif |
20f733e7 | 3459 | |
f351b2d6 SB |
3460 | static int mv_platform_probe(struct platform_device *pdev); |
3461 | static int __devexit mv_platform_remove(struct platform_device *pdev); | |
3462 | ||
20f733e7 BR |
3463 | static int __init mv_init(void) |
3464 | { | |
7bb3c529 SB |
3465 | int rc = -ENODEV; |
3466 | #ifdef CONFIG_PCI | |
3467 | rc = pci_register_driver(&mv_pci_driver); | |
f351b2d6 SB |
3468 | if (rc < 0) |
3469 | return rc; | |
3470 | #endif | |
3471 | rc = platform_driver_register(&mv_platform_driver); | |
3472 | ||
3473 | #ifdef CONFIG_PCI | |
3474 | if (rc < 0) | |
3475 | pci_unregister_driver(&mv_pci_driver); | |
7bb3c529 SB |
3476 | #endif |
3477 | return rc; | |
20f733e7 BR |
3478 | } |
3479 | ||
3480 | static void __exit mv_exit(void) | |
3481 | { | |
7bb3c529 | 3482 | #ifdef CONFIG_PCI |
20f733e7 | 3483 | pci_unregister_driver(&mv_pci_driver); |
7bb3c529 | 3484 | #endif |
f351b2d6 | 3485 | platform_driver_unregister(&mv_platform_driver); |
20f733e7 BR |
3486 | } |
3487 | ||
3488 | MODULE_AUTHOR("Brett Russ"); | |
3489 | MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers"); | |
3490 | MODULE_LICENSE("GPL"); | |
3491 | MODULE_DEVICE_TABLE(pci, mv_pci_tbl); | |
3492 | MODULE_VERSION(DRV_VERSION); | |
17c5aab5 | 3493 | MODULE_ALIAS("platform:" DRV_NAME); |
20f733e7 | 3494 | |
7bb3c529 | 3495 | #ifdef CONFIG_PCI |
ddef9bb3 JG |
3496 | module_param(msi, int, 0444); |
3497 | MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)"); | |
7bb3c529 | 3498 | #endif |
ddef9bb3 | 3499 | |
20f733e7 BR |
3500 | module_init(mv_init); |
3501 | module_exit(mv_exit); |