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1 | /* | |
2 | * sata_mv.c - Marvell SATA support | |
3 | * | |
4 | * Copyright 2008-2009: Marvell Corporation, all rights reserved. | |
5 | * Copyright 2005: EMC Corporation, all rights reserved. | |
6 | * Copyright 2005 Red Hat, Inc. All rights reserved. | |
7 | * | |
8 | * Originally written by Brett Russ. | |
9 | * Extensive overhaul and enhancement by Mark Lord <mlord@pobox.com>. | |
10 | * | |
11 | * Please ALWAYS copy linux-ide@vger.kernel.org on emails. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; version 2 of the License. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | */ | |
27 | ||
28 | /* | |
29 | * sata_mv TODO list: | |
30 | * | |
31 | * --> Develop a low-power-consumption strategy, and implement it. | |
32 | * | |
33 | * --> Add sysfs attributes for per-chip / per-HC IRQ coalescing thresholds. | |
34 | * | |
35 | * --> [Experiment, Marvell value added] Is it possible to use target | |
36 | * mode to cross-connect two Linux boxes with Marvell cards? If so, | |
37 | * creating LibATA target mode support would be very interesting. | |
38 | * | |
39 | * Target mode, for those without docs, is the ability to directly | |
40 | * connect two SATA ports. | |
41 | */ | |
42 | ||
43 | /* | |
44 | * 80x1-B2 errata PCI#11: | |
45 | * | |
46 | * Users of the 6041/6081 Rev.B2 chips (current is C0) | |
47 | * should be careful to insert those cards only onto PCI-X bus #0, | |
48 | * and only in device slots 0..7, not higher. The chips may not | |
49 | * work correctly otherwise (note: this is a pretty rare condition). | |
50 | */ | |
51 | ||
52 | #include <linux/kernel.h> | |
53 | #include <linux/module.h> | |
54 | #include <linux/pci.h> | |
55 | #include <linux/init.h> | |
56 | #include <linux/blkdev.h> | |
57 | #include <linux/delay.h> | |
58 | #include <linux/interrupt.h> | |
59 | #include <linux/dmapool.h> | |
60 | #include <linux/dma-mapping.h> | |
61 | #include <linux/device.h> | |
62 | #include <linux/clk.h> | |
63 | #include <linux/phy/phy.h> | |
64 | #include <linux/platform_device.h> | |
65 | #include <linux/ata_platform.h> | |
66 | #include <linux/mbus.h> | |
67 | #include <linux/bitops.h> | |
68 | #include <linux/gfp.h> | |
69 | #include <linux/of.h> | |
70 | #include <linux/of_irq.h> | |
71 | #include <scsi/scsi_host.h> | |
72 | #include <scsi/scsi_cmnd.h> | |
73 | #include <scsi/scsi_device.h> | |
74 | #include <linux/libata.h> | |
75 | ||
76 | #define DRV_NAME "sata_mv" | |
77 | #define DRV_VERSION "1.28" | |
78 | ||
79 | /* | |
80 | * module options | |
81 | */ | |
82 | ||
83 | #ifdef CONFIG_PCI | |
84 | static int msi; | |
85 | module_param(msi, int, S_IRUGO); | |
86 | MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)"); | |
87 | #endif | |
88 | ||
89 | static int irq_coalescing_io_count; | |
90 | module_param(irq_coalescing_io_count, int, S_IRUGO); | |
91 | MODULE_PARM_DESC(irq_coalescing_io_count, | |
92 | "IRQ coalescing I/O count threshold (0..255)"); | |
93 | ||
94 | static int irq_coalescing_usecs; | |
95 | module_param(irq_coalescing_usecs, int, S_IRUGO); | |
96 | MODULE_PARM_DESC(irq_coalescing_usecs, | |
97 | "IRQ coalescing time threshold in usecs"); | |
98 | ||
99 | enum { | |
100 | /* BAR's are enumerated in terms of pci_resource_start() terms */ | |
101 | MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */ | |
102 | MV_IO_BAR = 2, /* offset 0x18: IO space */ | |
103 | MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */ | |
104 | ||
105 | MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */ | |
106 | MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */ | |
107 | ||
108 | /* For use with both IRQ coalescing methods ("all ports" or "per-HC" */ | |
109 | COAL_CLOCKS_PER_USEC = 150, /* for calculating COAL_TIMEs */ | |
110 | MAX_COAL_TIME_THRESHOLD = ((1 << 24) - 1), /* internal clocks count */ | |
111 | MAX_COAL_IO_COUNT = 255, /* completed I/O count */ | |
112 | ||
113 | MV_PCI_REG_BASE = 0, | |
114 | ||
115 | /* | |
116 | * Per-chip ("all ports") interrupt coalescing feature. | |
117 | * This is only for GEN_II / GEN_IIE hardware. | |
118 | * | |
119 | * Coalescing defers the interrupt until either the IO_THRESHOLD | |
120 | * (count of completed I/Os) is met, or the TIME_THRESHOLD is met. | |
121 | */ | |
122 | COAL_REG_BASE = 0x18000, | |
123 | IRQ_COAL_CAUSE = (COAL_REG_BASE + 0x08), | |
124 | ALL_PORTS_COAL_IRQ = (1 << 4), /* all ports irq event */ | |
125 | ||
126 | IRQ_COAL_IO_THRESHOLD = (COAL_REG_BASE + 0xcc), | |
127 | IRQ_COAL_TIME_THRESHOLD = (COAL_REG_BASE + 0xd0), | |
128 | ||
129 | /* | |
130 | * Registers for the (unused here) transaction coalescing feature: | |
131 | */ | |
132 | TRAN_COAL_CAUSE_LO = (COAL_REG_BASE + 0x88), | |
133 | TRAN_COAL_CAUSE_HI = (COAL_REG_BASE + 0x8c), | |
134 | ||
135 | SATAHC0_REG_BASE = 0x20000, | |
136 | FLASH_CTL = 0x1046c, | |
137 | GPIO_PORT_CTL = 0x104f0, | |
138 | RESET_CFG = 0x180d8, | |
139 | ||
140 | MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ, | |
141 | MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ, | |
142 | MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */ | |
143 | MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ, | |
144 | ||
145 | MV_MAX_Q_DEPTH = 32, | |
146 | MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1, | |
147 | ||
148 | /* CRQB needs alignment on a 1KB boundary. Size == 1KB | |
149 | * CRPB needs alignment on a 256B boundary. Size == 256B | |
150 | * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B | |
151 | */ | |
152 | MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH), | |
153 | MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH), | |
154 | MV_MAX_SG_CT = 256, | |
155 | MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT), | |
156 | ||
157 | /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */ | |
158 | MV_PORT_HC_SHIFT = 2, | |
159 | MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */ | |
160 | /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */ | |
161 | MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */ | |
162 | ||
163 | /* Host Flags */ | |
164 | MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */ | |
165 | ||
166 | MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_PIO_POLLING, | |
167 | ||
168 | MV_GEN_I_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NO_ATAPI, | |
169 | ||
170 | MV_GEN_II_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NCQ | | |
171 | ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA, | |
172 | ||
173 | MV_GEN_IIE_FLAGS = MV_GEN_II_FLAGS | ATA_FLAG_AN, | |
174 | ||
175 | CRQB_FLAG_READ = (1 << 0), | |
176 | CRQB_TAG_SHIFT = 1, | |
177 | CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */ | |
178 | CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */ | |
179 | CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */ | |
180 | CRQB_CMD_ADDR_SHIFT = 8, | |
181 | CRQB_CMD_CS = (0x2 << 11), | |
182 | CRQB_CMD_LAST = (1 << 15), | |
183 | ||
184 | CRPB_FLAG_STATUS_SHIFT = 8, | |
185 | CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */ | |
186 | CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */ | |
187 | ||
188 | EPRD_FLAG_END_OF_TBL = (1 << 31), | |
189 | ||
190 | /* PCI interface registers */ | |
191 | ||
192 | MV_PCI_COMMAND = 0xc00, | |
193 | MV_PCI_COMMAND_MWRCOM = (1 << 4), /* PCI Master Write Combining */ | |
194 | MV_PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */ | |
195 | ||
196 | PCI_MAIN_CMD_STS = 0xd30, | |
197 | STOP_PCI_MASTER = (1 << 2), | |
198 | PCI_MASTER_EMPTY = (1 << 3), | |
199 | GLOB_SFT_RST = (1 << 4), | |
200 | ||
201 | MV_PCI_MODE = 0xd00, | |
202 | MV_PCI_MODE_MASK = 0x30, | |
203 | ||
204 | MV_PCI_EXP_ROM_BAR_CTL = 0xd2c, | |
205 | MV_PCI_DISC_TIMER = 0xd04, | |
206 | MV_PCI_MSI_TRIGGER = 0xc38, | |
207 | MV_PCI_SERR_MASK = 0xc28, | |
208 | MV_PCI_XBAR_TMOUT = 0x1d04, | |
209 | MV_PCI_ERR_LOW_ADDRESS = 0x1d40, | |
210 | MV_PCI_ERR_HIGH_ADDRESS = 0x1d44, | |
211 | MV_PCI_ERR_ATTRIBUTE = 0x1d48, | |
212 | MV_PCI_ERR_COMMAND = 0x1d50, | |
213 | ||
214 | PCI_IRQ_CAUSE = 0x1d58, | |
215 | PCI_IRQ_MASK = 0x1d5c, | |
216 | PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */ | |
217 | ||
218 | PCIE_IRQ_CAUSE = 0x1900, | |
219 | PCIE_IRQ_MASK = 0x1910, | |
220 | PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */ | |
221 | ||
222 | /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */ | |
223 | PCI_HC_MAIN_IRQ_CAUSE = 0x1d60, | |
224 | PCI_HC_MAIN_IRQ_MASK = 0x1d64, | |
225 | SOC_HC_MAIN_IRQ_CAUSE = 0x20020, | |
226 | SOC_HC_MAIN_IRQ_MASK = 0x20024, | |
227 | ERR_IRQ = (1 << 0), /* shift by (2 * port #) */ | |
228 | DONE_IRQ = (1 << 1), /* shift by (2 * port #) */ | |
229 | HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */ | |
230 | HC_SHIFT = 9, /* bits 9-17 = HC1's ports */ | |
231 | DONE_IRQ_0_3 = 0x000000aa, /* DONE_IRQ ports 0,1,2,3 */ | |
232 | DONE_IRQ_4_7 = (DONE_IRQ_0_3 << HC_SHIFT), /* 4,5,6,7 */ | |
233 | PCI_ERR = (1 << 18), | |
234 | TRAN_COAL_LO_DONE = (1 << 19), /* transaction coalescing */ | |
235 | TRAN_COAL_HI_DONE = (1 << 20), /* transaction coalescing */ | |
236 | PORTS_0_3_COAL_DONE = (1 << 8), /* HC0 IRQ coalescing */ | |
237 | PORTS_4_7_COAL_DONE = (1 << 17), /* HC1 IRQ coalescing */ | |
238 | ALL_PORTS_COAL_DONE = (1 << 21), /* GEN_II(E) IRQ coalescing */ | |
239 | GPIO_INT = (1 << 22), | |
240 | SELF_INT = (1 << 23), | |
241 | TWSI_INT = (1 << 24), | |
242 | HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */ | |
243 | HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */ | |
244 | HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */ | |
245 | ||
246 | /* SATAHC registers */ | |
247 | HC_CFG = 0x00, | |
248 | ||
249 | HC_IRQ_CAUSE = 0x14, | |
250 | DMA_IRQ = (1 << 0), /* shift by port # */ | |
251 | HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */ | |
252 | DEV_IRQ = (1 << 8), /* shift by port # */ | |
253 | ||
254 | /* | |
255 | * Per-HC (Host-Controller) interrupt coalescing feature. | |
256 | * This is present on all chip generations. | |
257 | * | |
258 | * Coalescing defers the interrupt until either the IO_THRESHOLD | |
259 | * (count of completed I/Os) is met, or the TIME_THRESHOLD is met. | |
260 | */ | |
261 | HC_IRQ_COAL_IO_THRESHOLD = 0x000c, | |
262 | HC_IRQ_COAL_TIME_THRESHOLD = 0x0010, | |
263 | ||
264 | SOC_LED_CTRL = 0x2c, | |
265 | SOC_LED_CTRL_BLINK = (1 << 0), /* Active LED blink */ | |
266 | SOC_LED_CTRL_ACT_PRESENCE = (1 << 2), /* Multiplex dev presence */ | |
267 | /* with dev activity LED */ | |
268 | ||
269 | /* Shadow block registers */ | |
270 | SHD_BLK = 0x100, | |
271 | SHD_CTL_AST = 0x20, /* ofs from SHD_BLK */ | |
272 | ||
273 | /* SATA registers */ | |
274 | SATA_STATUS = 0x300, /* ctrl, err regs follow status */ | |
275 | SATA_ACTIVE = 0x350, | |
276 | FIS_IRQ_CAUSE = 0x364, | |
277 | FIS_IRQ_CAUSE_AN = (1 << 9), /* async notification */ | |
278 | ||
279 | LTMODE = 0x30c, /* requires read-after-write */ | |
280 | LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */ | |
281 | ||
282 | PHY_MODE2 = 0x330, | |
283 | PHY_MODE3 = 0x310, | |
284 | ||
285 | PHY_MODE4 = 0x314, /* requires read-after-write */ | |
286 | PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */ | |
287 | PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */ | |
288 | PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */ | |
289 | PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */ | |
290 | ||
291 | SATA_IFCTL = 0x344, | |
292 | SATA_TESTCTL = 0x348, | |
293 | SATA_IFSTAT = 0x34c, | |
294 | VENDOR_UNIQUE_FIS = 0x35c, | |
295 | ||
296 | FISCFG = 0x360, | |
297 | FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */ | |
298 | FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */ | |
299 | ||
300 | PHY_MODE9_GEN2 = 0x398, | |
301 | PHY_MODE9_GEN1 = 0x39c, | |
302 | PHYCFG_OFS = 0x3a0, /* only in 65n devices */ | |
303 | ||
304 | MV5_PHY_MODE = 0x74, | |
305 | MV5_LTMODE = 0x30, | |
306 | MV5_PHY_CTL = 0x0C, | |
307 | SATA_IFCFG = 0x050, | |
308 | LP_PHY_CTL = 0x058, | |
309 | ||
310 | MV_M2_PREAMP_MASK = 0x7e0, | |
311 | ||
312 | /* Port registers */ | |
313 | EDMA_CFG = 0, | |
314 | EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */ | |
315 | EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */ | |
316 | EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */ | |
317 | EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */ | |
318 | EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */ | |
319 | EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */ | |
320 | EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */ | |
321 | ||
322 | EDMA_ERR_IRQ_CAUSE = 0x8, | |
323 | EDMA_ERR_IRQ_MASK = 0xc, | |
324 | EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */ | |
325 | EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */ | |
326 | EDMA_ERR_DEV = (1 << 2), /* device error */ | |
327 | EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */ | |
328 | EDMA_ERR_DEV_CON = (1 << 4), /* device connected */ | |
329 | EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */ | |
330 | EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */ | |
331 | EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */ | |
332 | EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */ | |
333 | EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */ | |
334 | EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */ | |
335 | EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */ | |
336 | EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */ | |
337 | EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */ | |
338 | ||
339 | EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */ | |
340 | EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */ | |
341 | EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */ | |
342 | EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */ | |
343 | EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */ | |
344 | ||
345 | EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */ | |
346 | ||
347 | EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */ | |
348 | EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */ | |
349 | EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */ | |
350 | EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */ | |
351 | EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */ | |
352 | EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */ | |
353 | ||
354 | EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */ | |
355 | ||
356 | EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */ | |
357 | EDMA_ERR_OVERRUN_5 = (1 << 5), | |
358 | EDMA_ERR_UNDERRUN_5 = (1 << 6), | |
359 | ||
360 | EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 | | |
361 | EDMA_ERR_LNK_CTRL_RX_1 | | |
362 | EDMA_ERR_LNK_CTRL_RX_3 | | |
363 | EDMA_ERR_LNK_CTRL_TX, | |
364 | ||
365 | EDMA_EH_FREEZE = EDMA_ERR_D_PAR | | |
366 | EDMA_ERR_PRD_PAR | | |
367 | EDMA_ERR_DEV_DCON | | |
368 | EDMA_ERR_DEV_CON | | |
369 | EDMA_ERR_SERR | | |
370 | EDMA_ERR_SELF_DIS | | |
371 | EDMA_ERR_CRQB_PAR | | |
372 | EDMA_ERR_CRPB_PAR | | |
373 | EDMA_ERR_INTRL_PAR | | |
374 | EDMA_ERR_IORDY | | |
375 | EDMA_ERR_LNK_CTRL_RX_2 | | |
376 | EDMA_ERR_LNK_DATA_RX | | |
377 | EDMA_ERR_LNK_DATA_TX | | |
378 | EDMA_ERR_TRANS_PROTO, | |
379 | ||
380 | EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR | | |
381 | EDMA_ERR_PRD_PAR | | |
382 | EDMA_ERR_DEV_DCON | | |
383 | EDMA_ERR_DEV_CON | | |
384 | EDMA_ERR_OVERRUN_5 | | |
385 | EDMA_ERR_UNDERRUN_5 | | |
386 | EDMA_ERR_SELF_DIS_5 | | |
387 | EDMA_ERR_CRQB_PAR | | |
388 | EDMA_ERR_CRPB_PAR | | |
389 | EDMA_ERR_INTRL_PAR | | |
390 | EDMA_ERR_IORDY, | |
391 | ||
392 | EDMA_REQ_Q_BASE_HI = 0x10, | |
393 | EDMA_REQ_Q_IN_PTR = 0x14, /* also contains BASE_LO */ | |
394 | ||
395 | EDMA_REQ_Q_OUT_PTR = 0x18, | |
396 | EDMA_REQ_Q_PTR_SHIFT = 5, | |
397 | ||
398 | EDMA_RSP_Q_BASE_HI = 0x1c, | |
399 | EDMA_RSP_Q_IN_PTR = 0x20, | |
400 | EDMA_RSP_Q_OUT_PTR = 0x24, /* also contains BASE_LO */ | |
401 | EDMA_RSP_Q_PTR_SHIFT = 3, | |
402 | ||
403 | EDMA_CMD = 0x28, /* EDMA command register */ | |
404 | EDMA_EN = (1 << 0), /* enable EDMA */ | |
405 | EDMA_DS = (1 << 1), /* disable EDMA; self-negated */ | |
406 | EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */ | |
407 | ||
408 | EDMA_STATUS = 0x30, /* EDMA engine status */ | |
409 | EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */ | |
410 | EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */ | |
411 | ||
412 | EDMA_IORDY_TMOUT = 0x34, | |
413 | EDMA_ARB_CFG = 0x38, | |
414 | ||
415 | EDMA_HALTCOND = 0x60, /* GenIIe halt conditions */ | |
416 | EDMA_UNKNOWN_RSVD = 0x6C, /* GenIIe unknown/reserved */ | |
417 | ||
418 | BMDMA_CMD = 0x224, /* bmdma command register */ | |
419 | BMDMA_STATUS = 0x228, /* bmdma status register */ | |
420 | BMDMA_PRD_LOW = 0x22c, /* bmdma PRD addr 31:0 */ | |
421 | BMDMA_PRD_HIGH = 0x230, /* bmdma PRD addr 63:32 */ | |
422 | ||
423 | /* Host private flags (hp_flags) */ | |
424 | MV_HP_FLAG_MSI = (1 << 0), | |
425 | MV_HP_ERRATA_50XXB0 = (1 << 1), | |
426 | MV_HP_ERRATA_50XXB2 = (1 << 2), | |
427 | MV_HP_ERRATA_60X1B2 = (1 << 3), | |
428 | MV_HP_ERRATA_60X1C0 = (1 << 4), | |
429 | MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */ | |
430 | MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */ | |
431 | MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */ | |
432 | MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */ | |
433 | MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */ | |
434 | MV_HP_FLAG_SOC = (1 << 11), /* SystemOnChip, no PCI */ | |
435 | MV_HP_QUIRK_LED_BLINK_EN = (1 << 12), /* is led blinking enabled? */ | |
436 | MV_HP_FIX_LP_PHY_CTL = (1 << 13), /* fix speed in LP_PHY_CTL ? */ | |
437 | ||
438 | /* Port private flags (pp_flags) */ | |
439 | MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */ | |
440 | MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */ | |
441 | MV_PP_FLAG_FBS_EN = (1 << 2), /* is EDMA set up for FBS? */ | |
442 | MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */ | |
443 | MV_PP_FLAG_FAKE_ATA_BUSY = (1 << 4), /* ignore initial ATA_DRDY */ | |
444 | }; | |
445 | ||
446 | #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I) | |
447 | #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II) | |
448 | #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE) | |
449 | #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE) | |
450 | #define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC) | |
451 | ||
452 | #define WINDOW_CTRL(i) (0x20030 + ((i) << 4)) | |
453 | #define WINDOW_BASE(i) (0x20034 + ((i) << 4)) | |
454 | ||
455 | enum { | |
456 | /* DMA boundary 0xffff is required by the s/g splitting | |
457 | * we need on /length/ in mv_fill-sg(). | |
458 | */ | |
459 | MV_DMA_BOUNDARY = 0xffffU, | |
460 | ||
461 | /* mask of register bits containing lower 32 bits | |
462 | * of EDMA request queue DMA address | |
463 | */ | |
464 | EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U, | |
465 | ||
466 | /* ditto, for response queue */ | |
467 | EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U, | |
468 | }; | |
469 | ||
470 | enum chip_type { | |
471 | chip_504x, | |
472 | chip_508x, | |
473 | chip_5080, | |
474 | chip_604x, | |
475 | chip_608x, | |
476 | chip_6042, | |
477 | chip_7042, | |
478 | chip_soc, | |
479 | }; | |
480 | ||
481 | /* Command ReQuest Block: 32B */ | |
482 | struct mv_crqb { | |
483 | __le32 sg_addr; | |
484 | __le32 sg_addr_hi; | |
485 | __le16 ctrl_flags; | |
486 | __le16 ata_cmd[11]; | |
487 | }; | |
488 | ||
489 | struct mv_crqb_iie { | |
490 | __le32 addr; | |
491 | __le32 addr_hi; | |
492 | __le32 flags; | |
493 | __le32 len; | |
494 | __le32 ata_cmd[4]; | |
495 | }; | |
496 | ||
497 | /* Command ResPonse Block: 8B */ | |
498 | struct mv_crpb { | |
499 | __le16 id; | |
500 | __le16 flags; | |
501 | __le32 tmstmp; | |
502 | }; | |
503 | ||
504 | /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */ | |
505 | struct mv_sg { | |
506 | __le32 addr; | |
507 | __le32 flags_size; | |
508 | __le32 addr_hi; | |
509 | __le32 reserved; | |
510 | }; | |
511 | ||
512 | /* | |
513 | * We keep a local cache of a few frequently accessed port | |
514 | * registers here, to avoid having to read them (very slow) | |
515 | * when switching between EDMA and non-EDMA modes. | |
516 | */ | |
517 | struct mv_cached_regs { | |
518 | u32 fiscfg; | |
519 | u32 ltmode; | |
520 | u32 haltcond; | |
521 | u32 unknown_rsvd; | |
522 | }; | |
523 | ||
524 | struct mv_port_priv { | |
525 | struct mv_crqb *crqb; | |
526 | dma_addr_t crqb_dma; | |
527 | struct mv_crpb *crpb; | |
528 | dma_addr_t crpb_dma; | |
529 | struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH]; | |
530 | dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH]; | |
531 | ||
532 | unsigned int req_idx; | |
533 | unsigned int resp_idx; | |
534 | ||
535 | u32 pp_flags; | |
536 | struct mv_cached_regs cached; | |
537 | unsigned int delayed_eh_pmp_map; | |
538 | }; | |
539 | ||
540 | struct mv_port_signal { | |
541 | u32 amps; | |
542 | u32 pre; | |
543 | }; | |
544 | ||
545 | struct mv_host_priv { | |
546 | u32 hp_flags; | |
547 | unsigned int board_idx; | |
548 | u32 main_irq_mask; | |
549 | struct mv_port_signal signal[8]; | |
550 | const struct mv_hw_ops *ops; | |
551 | int n_ports; | |
552 | void __iomem *base; | |
553 | void __iomem *main_irq_cause_addr; | |
554 | void __iomem *main_irq_mask_addr; | |
555 | u32 irq_cause_offset; | |
556 | u32 irq_mask_offset; | |
557 | u32 unmask_all_irqs; | |
558 | ||
559 | /* | |
560 | * Needed on some devices that require their clocks to be enabled. | |
561 | * These are optional: if the platform device does not have any | |
562 | * clocks, they won't be used. Also, if the underlying hardware | |
563 | * does not support the common clock framework (CONFIG_HAVE_CLK=n), | |
564 | * all the clock operations become no-ops (see clk.h). | |
565 | */ | |
566 | struct clk *clk; | |
567 | struct clk **port_clks; | |
568 | /* | |
569 | * Some devices have a SATA PHY which can be enabled/disabled | |
570 | * in order to save power. These are optional: if the platform | |
571 | * devices does not have any phy, they won't be used. | |
572 | */ | |
573 | struct phy **port_phys; | |
574 | /* | |
575 | * These consistent DMA memory pools give us guaranteed | |
576 | * alignment for hardware-accessed data structures, | |
577 | * and less memory waste in accomplishing the alignment. | |
578 | */ | |
579 | struct dma_pool *crqb_pool; | |
580 | struct dma_pool *crpb_pool; | |
581 | struct dma_pool *sg_tbl_pool; | |
582 | }; | |
583 | ||
584 | struct mv_hw_ops { | |
585 | void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio, | |
586 | unsigned int port); | |
587 | void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio); | |
588 | void (*read_preamp)(struct mv_host_priv *hpriv, int idx, | |
589 | void __iomem *mmio); | |
590 | int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio, | |
591 | unsigned int n_hc); | |
592 | void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio); | |
593 | void (*reset_bus)(struct ata_host *host, void __iomem *mmio); | |
594 | }; | |
595 | ||
596 | static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val); | |
597 | static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val); | |
598 | static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val); | |
599 | static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val); | |
600 | static int mv_port_start(struct ata_port *ap); | |
601 | static void mv_port_stop(struct ata_port *ap); | |
602 | static int mv_qc_defer(struct ata_queued_cmd *qc); | |
603 | static void mv_qc_prep(struct ata_queued_cmd *qc); | |
604 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc); | |
605 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc); | |
606 | static int mv_hardreset(struct ata_link *link, unsigned int *class, | |
607 | unsigned long deadline); | |
608 | static void mv_eh_freeze(struct ata_port *ap); | |
609 | static void mv_eh_thaw(struct ata_port *ap); | |
610 | static void mv6_dev_config(struct ata_device *dev); | |
611 | ||
612 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, | |
613 | unsigned int port); | |
614 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); | |
615 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, | |
616 | void __iomem *mmio); | |
617 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
618 | unsigned int n_hc); | |
619 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); | |
620 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio); | |
621 | ||
622 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, | |
623 | unsigned int port); | |
624 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); | |
625 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, | |
626 | void __iomem *mmio); | |
627 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
628 | unsigned int n_hc); | |
629 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); | |
630 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, | |
631 | void __iomem *mmio); | |
632 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, | |
633 | void __iomem *mmio); | |
634 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, | |
635 | void __iomem *mmio, unsigned int n_hc); | |
636 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, | |
637 | void __iomem *mmio); | |
638 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio); | |
639 | static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv, | |
640 | void __iomem *mmio, unsigned int port); | |
641 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio); | |
642 | static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, | |
643 | unsigned int port_no); | |
644 | static int mv_stop_edma(struct ata_port *ap); | |
645 | static int mv_stop_edma_engine(void __iomem *port_mmio); | |
646 | static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma); | |
647 | ||
648 | static void mv_pmp_select(struct ata_port *ap, int pmp); | |
649 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, | |
650 | unsigned long deadline); | |
651 | static int mv_softreset(struct ata_link *link, unsigned int *class, | |
652 | unsigned long deadline); | |
653 | static void mv_pmp_error_handler(struct ata_port *ap); | |
654 | static void mv_process_crpb_entries(struct ata_port *ap, | |
655 | struct mv_port_priv *pp); | |
656 | ||
657 | static void mv_sff_irq_clear(struct ata_port *ap); | |
658 | static int mv_check_atapi_dma(struct ata_queued_cmd *qc); | |
659 | static void mv_bmdma_setup(struct ata_queued_cmd *qc); | |
660 | static void mv_bmdma_start(struct ata_queued_cmd *qc); | |
661 | static void mv_bmdma_stop(struct ata_queued_cmd *qc); | |
662 | static u8 mv_bmdma_status(struct ata_port *ap); | |
663 | static u8 mv_sff_check_status(struct ata_port *ap); | |
664 | ||
665 | /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below | |
666 | * because we have to allow room for worst case splitting of | |
667 | * PRDs for 64K boundaries in mv_fill_sg(). | |
668 | */ | |
669 | #ifdef CONFIG_PCI | |
670 | static struct scsi_host_template mv5_sht = { | |
671 | ATA_BASE_SHT(DRV_NAME), | |
672 | .sg_tablesize = MV_MAX_SG_CT / 2, | |
673 | .dma_boundary = MV_DMA_BOUNDARY, | |
674 | }; | |
675 | #endif | |
676 | static struct scsi_host_template mv6_sht = { | |
677 | ATA_NCQ_SHT(DRV_NAME), | |
678 | .can_queue = MV_MAX_Q_DEPTH - 1, | |
679 | .sg_tablesize = MV_MAX_SG_CT / 2, | |
680 | .dma_boundary = MV_DMA_BOUNDARY, | |
681 | }; | |
682 | ||
683 | static struct ata_port_operations mv5_ops = { | |
684 | .inherits = &ata_sff_port_ops, | |
685 | ||
686 | .lost_interrupt = ATA_OP_NULL, | |
687 | ||
688 | .qc_defer = mv_qc_defer, | |
689 | .qc_prep = mv_qc_prep, | |
690 | .qc_issue = mv_qc_issue, | |
691 | ||
692 | .freeze = mv_eh_freeze, | |
693 | .thaw = mv_eh_thaw, | |
694 | .hardreset = mv_hardreset, | |
695 | ||
696 | .scr_read = mv5_scr_read, | |
697 | .scr_write = mv5_scr_write, | |
698 | ||
699 | .port_start = mv_port_start, | |
700 | .port_stop = mv_port_stop, | |
701 | }; | |
702 | ||
703 | static struct ata_port_operations mv6_ops = { | |
704 | .inherits = &ata_bmdma_port_ops, | |
705 | ||
706 | .lost_interrupt = ATA_OP_NULL, | |
707 | ||
708 | .qc_defer = mv_qc_defer, | |
709 | .qc_prep = mv_qc_prep, | |
710 | .qc_issue = mv_qc_issue, | |
711 | ||
712 | .dev_config = mv6_dev_config, | |
713 | ||
714 | .freeze = mv_eh_freeze, | |
715 | .thaw = mv_eh_thaw, | |
716 | .hardreset = mv_hardreset, | |
717 | .softreset = mv_softreset, | |
718 | .pmp_hardreset = mv_pmp_hardreset, | |
719 | .pmp_softreset = mv_softreset, | |
720 | .error_handler = mv_pmp_error_handler, | |
721 | ||
722 | .scr_read = mv_scr_read, | |
723 | .scr_write = mv_scr_write, | |
724 | ||
725 | .sff_check_status = mv_sff_check_status, | |
726 | .sff_irq_clear = mv_sff_irq_clear, | |
727 | .check_atapi_dma = mv_check_atapi_dma, | |
728 | .bmdma_setup = mv_bmdma_setup, | |
729 | .bmdma_start = mv_bmdma_start, | |
730 | .bmdma_stop = mv_bmdma_stop, | |
731 | .bmdma_status = mv_bmdma_status, | |
732 | ||
733 | .port_start = mv_port_start, | |
734 | .port_stop = mv_port_stop, | |
735 | }; | |
736 | ||
737 | static struct ata_port_operations mv_iie_ops = { | |
738 | .inherits = &mv6_ops, | |
739 | .dev_config = ATA_OP_NULL, | |
740 | .qc_prep = mv_qc_prep_iie, | |
741 | }; | |
742 | ||
743 | static const struct ata_port_info mv_port_info[] = { | |
744 | { /* chip_504x */ | |
745 | .flags = MV_GEN_I_FLAGS, | |
746 | .pio_mask = ATA_PIO4, | |
747 | .udma_mask = ATA_UDMA6, | |
748 | .port_ops = &mv5_ops, | |
749 | }, | |
750 | { /* chip_508x */ | |
751 | .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC, | |
752 | .pio_mask = ATA_PIO4, | |
753 | .udma_mask = ATA_UDMA6, | |
754 | .port_ops = &mv5_ops, | |
755 | }, | |
756 | { /* chip_5080 */ | |
757 | .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC, | |
758 | .pio_mask = ATA_PIO4, | |
759 | .udma_mask = ATA_UDMA6, | |
760 | .port_ops = &mv5_ops, | |
761 | }, | |
762 | { /* chip_604x */ | |
763 | .flags = MV_GEN_II_FLAGS, | |
764 | .pio_mask = ATA_PIO4, | |
765 | .udma_mask = ATA_UDMA6, | |
766 | .port_ops = &mv6_ops, | |
767 | }, | |
768 | { /* chip_608x */ | |
769 | .flags = MV_GEN_II_FLAGS | MV_FLAG_DUAL_HC, | |
770 | .pio_mask = ATA_PIO4, | |
771 | .udma_mask = ATA_UDMA6, | |
772 | .port_ops = &mv6_ops, | |
773 | }, | |
774 | { /* chip_6042 */ | |
775 | .flags = MV_GEN_IIE_FLAGS, | |
776 | .pio_mask = ATA_PIO4, | |
777 | .udma_mask = ATA_UDMA6, | |
778 | .port_ops = &mv_iie_ops, | |
779 | }, | |
780 | { /* chip_7042 */ | |
781 | .flags = MV_GEN_IIE_FLAGS, | |
782 | .pio_mask = ATA_PIO4, | |
783 | .udma_mask = ATA_UDMA6, | |
784 | .port_ops = &mv_iie_ops, | |
785 | }, | |
786 | { /* chip_soc */ | |
787 | .flags = MV_GEN_IIE_FLAGS, | |
788 | .pio_mask = ATA_PIO4, | |
789 | .udma_mask = ATA_UDMA6, | |
790 | .port_ops = &mv_iie_ops, | |
791 | }, | |
792 | }; | |
793 | ||
794 | static const struct pci_device_id mv_pci_tbl[] = { | |
795 | { PCI_VDEVICE(MARVELL, 0x5040), chip_504x }, | |
796 | { PCI_VDEVICE(MARVELL, 0x5041), chip_504x }, | |
797 | { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 }, | |
798 | { PCI_VDEVICE(MARVELL, 0x5081), chip_508x }, | |
799 | /* RocketRAID 1720/174x have different identifiers */ | |
800 | { PCI_VDEVICE(TTI, 0x1720), chip_6042 }, | |
801 | { PCI_VDEVICE(TTI, 0x1740), chip_6042 }, | |
802 | { PCI_VDEVICE(TTI, 0x1742), chip_6042 }, | |
803 | ||
804 | { PCI_VDEVICE(MARVELL, 0x6040), chip_604x }, | |
805 | { PCI_VDEVICE(MARVELL, 0x6041), chip_604x }, | |
806 | { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 }, | |
807 | { PCI_VDEVICE(MARVELL, 0x6080), chip_608x }, | |
808 | { PCI_VDEVICE(MARVELL, 0x6081), chip_608x }, | |
809 | ||
810 | { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x }, | |
811 | ||
812 | /* Adaptec 1430SA */ | |
813 | { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 }, | |
814 | ||
815 | /* Marvell 7042 support */ | |
816 | { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 }, | |
817 | ||
818 | /* Highpoint RocketRAID PCIe series */ | |
819 | { PCI_VDEVICE(TTI, 0x2300), chip_7042 }, | |
820 | { PCI_VDEVICE(TTI, 0x2310), chip_7042 }, | |
821 | ||
822 | { } /* terminate list */ | |
823 | }; | |
824 | ||
825 | static const struct mv_hw_ops mv5xxx_ops = { | |
826 | .phy_errata = mv5_phy_errata, | |
827 | .enable_leds = mv5_enable_leds, | |
828 | .read_preamp = mv5_read_preamp, | |
829 | .reset_hc = mv5_reset_hc, | |
830 | .reset_flash = mv5_reset_flash, | |
831 | .reset_bus = mv5_reset_bus, | |
832 | }; | |
833 | ||
834 | static const struct mv_hw_ops mv6xxx_ops = { | |
835 | .phy_errata = mv6_phy_errata, | |
836 | .enable_leds = mv6_enable_leds, | |
837 | .read_preamp = mv6_read_preamp, | |
838 | .reset_hc = mv6_reset_hc, | |
839 | .reset_flash = mv6_reset_flash, | |
840 | .reset_bus = mv_reset_pci_bus, | |
841 | }; | |
842 | ||
843 | static const struct mv_hw_ops mv_soc_ops = { | |
844 | .phy_errata = mv6_phy_errata, | |
845 | .enable_leds = mv_soc_enable_leds, | |
846 | .read_preamp = mv_soc_read_preamp, | |
847 | .reset_hc = mv_soc_reset_hc, | |
848 | .reset_flash = mv_soc_reset_flash, | |
849 | .reset_bus = mv_soc_reset_bus, | |
850 | }; | |
851 | ||
852 | static const struct mv_hw_ops mv_soc_65n_ops = { | |
853 | .phy_errata = mv_soc_65n_phy_errata, | |
854 | .enable_leds = mv_soc_enable_leds, | |
855 | .reset_hc = mv_soc_reset_hc, | |
856 | .reset_flash = mv_soc_reset_flash, | |
857 | .reset_bus = mv_soc_reset_bus, | |
858 | }; | |
859 | ||
860 | /* | |
861 | * Functions | |
862 | */ | |
863 | ||
864 | static inline void writelfl(unsigned long data, void __iomem *addr) | |
865 | { | |
866 | writel(data, addr); | |
867 | (void) readl(addr); /* flush to avoid PCI posted write */ | |
868 | } | |
869 | ||
870 | static inline unsigned int mv_hc_from_port(unsigned int port) | |
871 | { | |
872 | return port >> MV_PORT_HC_SHIFT; | |
873 | } | |
874 | ||
875 | static inline unsigned int mv_hardport_from_port(unsigned int port) | |
876 | { | |
877 | return port & MV_PORT_MASK; | |
878 | } | |
879 | ||
880 | /* | |
881 | * Consolidate some rather tricky bit shift calculations. | |
882 | * This is hot-path stuff, so not a function. | |
883 | * Simple code, with two return values, so macro rather than inline. | |
884 | * | |
885 | * port is the sole input, in range 0..7. | |
886 | * shift is one output, for use with main_irq_cause / main_irq_mask registers. | |
887 | * hardport is the other output, in range 0..3. | |
888 | * | |
889 | * Note that port and hardport may be the same variable in some cases. | |
890 | */ | |
891 | #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \ | |
892 | { \ | |
893 | shift = mv_hc_from_port(port) * HC_SHIFT; \ | |
894 | hardport = mv_hardport_from_port(port); \ | |
895 | shift += hardport * 2; \ | |
896 | } | |
897 | ||
898 | static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc) | |
899 | { | |
900 | return (base + SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ)); | |
901 | } | |
902 | ||
903 | static inline void __iomem *mv_hc_base_from_port(void __iomem *base, | |
904 | unsigned int port) | |
905 | { | |
906 | return mv_hc_base(base, mv_hc_from_port(port)); | |
907 | } | |
908 | ||
909 | static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port) | |
910 | { | |
911 | return mv_hc_base_from_port(base, port) + | |
912 | MV_SATAHC_ARBTR_REG_SZ + | |
913 | (mv_hardport_from_port(port) * MV_PORT_REG_SZ); | |
914 | } | |
915 | ||
916 | static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port) | |
917 | { | |
918 | void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port); | |
919 | unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL; | |
920 | ||
921 | return hc_mmio + ofs; | |
922 | } | |
923 | ||
924 | static inline void __iomem *mv_host_base(struct ata_host *host) | |
925 | { | |
926 | struct mv_host_priv *hpriv = host->private_data; | |
927 | return hpriv->base; | |
928 | } | |
929 | ||
930 | static inline void __iomem *mv_ap_base(struct ata_port *ap) | |
931 | { | |
932 | return mv_port_base(mv_host_base(ap->host), ap->port_no); | |
933 | } | |
934 | ||
935 | static inline int mv_get_hc_count(unsigned long port_flags) | |
936 | { | |
937 | return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1); | |
938 | } | |
939 | ||
940 | /** | |
941 | * mv_save_cached_regs - (re-)initialize cached port registers | |
942 | * @ap: the port whose registers we are caching | |
943 | * | |
944 | * Initialize the local cache of port registers, | |
945 | * so that reading them over and over again can | |
946 | * be avoided on the hotter paths of this driver. | |
947 | * This saves a few microseconds each time we switch | |
948 | * to/from EDMA mode to perform (eg.) a drive cache flush. | |
949 | */ | |
950 | static void mv_save_cached_regs(struct ata_port *ap) | |
951 | { | |
952 | void __iomem *port_mmio = mv_ap_base(ap); | |
953 | struct mv_port_priv *pp = ap->private_data; | |
954 | ||
955 | pp->cached.fiscfg = readl(port_mmio + FISCFG); | |
956 | pp->cached.ltmode = readl(port_mmio + LTMODE); | |
957 | pp->cached.haltcond = readl(port_mmio + EDMA_HALTCOND); | |
958 | pp->cached.unknown_rsvd = readl(port_mmio + EDMA_UNKNOWN_RSVD); | |
959 | } | |
960 | ||
961 | /** | |
962 | * mv_write_cached_reg - write to a cached port register | |
963 | * @addr: hardware address of the register | |
964 | * @old: pointer to cached value of the register | |
965 | * @new: new value for the register | |
966 | * | |
967 | * Write a new value to a cached register, | |
968 | * but only if the value is different from before. | |
969 | */ | |
970 | static inline void mv_write_cached_reg(void __iomem *addr, u32 *old, u32 new) | |
971 | { | |
972 | if (new != *old) { | |
973 | unsigned long laddr; | |
974 | *old = new; | |
975 | /* | |
976 | * Workaround for 88SX60x1-B2 FEr SATA#13: | |
977 | * Read-after-write is needed to prevent generating 64-bit | |
978 | * write cycles on the PCI bus for SATA interface registers | |
979 | * at offsets ending in 0x4 or 0xc. | |
980 | * | |
981 | * Looks like a lot of fuss, but it avoids an unnecessary | |
982 | * +1 usec read-after-write delay for unaffected registers. | |
983 | */ | |
984 | laddr = (long)addr & 0xffff; | |
985 | if (laddr >= 0x300 && laddr <= 0x33c) { | |
986 | laddr &= 0x000f; | |
987 | if (laddr == 0x4 || laddr == 0xc) { | |
988 | writelfl(new, addr); /* read after write */ | |
989 | return; | |
990 | } | |
991 | } | |
992 | writel(new, addr); /* unaffected by the errata */ | |
993 | } | |
994 | } | |
995 | ||
996 | static void mv_set_edma_ptrs(void __iomem *port_mmio, | |
997 | struct mv_host_priv *hpriv, | |
998 | struct mv_port_priv *pp) | |
999 | { | |
1000 | u32 index; | |
1001 | ||
1002 | /* | |
1003 | * initialize request queue | |
1004 | */ | |
1005 | pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ | |
1006 | index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; | |
1007 | ||
1008 | WARN_ON(pp->crqb_dma & 0x3ff); | |
1009 | writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI); | |
1010 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index, | |
1011 | port_mmio + EDMA_REQ_Q_IN_PTR); | |
1012 | writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR); | |
1013 | ||
1014 | /* | |
1015 | * initialize response queue | |
1016 | */ | |
1017 | pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ | |
1018 | index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT; | |
1019 | ||
1020 | WARN_ON(pp->crpb_dma & 0xff); | |
1021 | writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI); | |
1022 | writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR); | |
1023 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index, | |
1024 | port_mmio + EDMA_RSP_Q_OUT_PTR); | |
1025 | } | |
1026 | ||
1027 | static void mv_write_main_irq_mask(u32 mask, struct mv_host_priv *hpriv) | |
1028 | { | |
1029 | /* | |
1030 | * When writing to the main_irq_mask in hardware, | |
1031 | * we must ensure exclusivity between the interrupt coalescing bits | |
1032 | * and the corresponding individual port DONE_IRQ bits. | |
1033 | * | |
1034 | * Note that this register is really an "IRQ enable" register, | |
1035 | * not an "IRQ mask" register as Marvell's naming might suggest. | |
1036 | */ | |
1037 | if (mask & (ALL_PORTS_COAL_DONE | PORTS_0_3_COAL_DONE)) | |
1038 | mask &= ~DONE_IRQ_0_3; | |
1039 | if (mask & (ALL_PORTS_COAL_DONE | PORTS_4_7_COAL_DONE)) | |
1040 | mask &= ~DONE_IRQ_4_7; | |
1041 | writelfl(mask, hpriv->main_irq_mask_addr); | |
1042 | } | |
1043 | ||
1044 | static void mv_set_main_irq_mask(struct ata_host *host, | |
1045 | u32 disable_bits, u32 enable_bits) | |
1046 | { | |
1047 | struct mv_host_priv *hpriv = host->private_data; | |
1048 | u32 old_mask, new_mask; | |
1049 | ||
1050 | old_mask = hpriv->main_irq_mask; | |
1051 | new_mask = (old_mask & ~disable_bits) | enable_bits; | |
1052 | if (new_mask != old_mask) { | |
1053 | hpriv->main_irq_mask = new_mask; | |
1054 | mv_write_main_irq_mask(new_mask, hpriv); | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | static void mv_enable_port_irqs(struct ata_port *ap, | |
1059 | unsigned int port_bits) | |
1060 | { | |
1061 | unsigned int shift, hardport, port = ap->port_no; | |
1062 | u32 disable_bits, enable_bits; | |
1063 | ||
1064 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); | |
1065 | ||
1066 | disable_bits = (DONE_IRQ | ERR_IRQ) << shift; | |
1067 | enable_bits = port_bits << shift; | |
1068 | mv_set_main_irq_mask(ap->host, disable_bits, enable_bits); | |
1069 | } | |
1070 | ||
1071 | static void mv_clear_and_enable_port_irqs(struct ata_port *ap, | |
1072 | void __iomem *port_mmio, | |
1073 | unsigned int port_irqs) | |
1074 | { | |
1075 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1076 | int hardport = mv_hardport_from_port(ap->port_no); | |
1077 | void __iomem *hc_mmio = mv_hc_base_from_port( | |
1078 | mv_host_base(ap->host), ap->port_no); | |
1079 | u32 hc_irq_cause; | |
1080 | ||
1081 | /* clear EDMA event indicators, if any */ | |
1082 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE); | |
1083 | ||
1084 | /* clear pending irq events */ | |
1085 | hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport); | |
1086 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE); | |
1087 | ||
1088 | /* clear FIS IRQ Cause */ | |
1089 | if (IS_GEN_IIE(hpriv)) | |
1090 | writelfl(0, port_mmio + FIS_IRQ_CAUSE); | |
1091 | ||
1092 | mv_enable_port_irqs(ap, port_irqs); | |
1093 | } | |
1094 | ||
1095 | static void mv_set_irq_coalescing(struct ata_host *host, | |
1096 | unsigned int count, unsigned int usecs) | |
1097 | { | |
1098 | struct mv_host_priv *hpriv = host->private_data; | |
1099 | void __iomem *mmio = hpriv->base, *hc_mmio; | |
1100 | u32 coal_enable = 0; | |
1101 | unsigned long flags; | |
1102 | unsigned int clks, is_dual_hc = hpriv->n_ports > MV_PORTS_PER_HC; | |
1103 | const u32 coal_disable = PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE | | |
1104 | ALL_PORTS_COAL_DONE; | |
1105 | ||
1106 | /* Disable IRQ coalescing if either threshold is zero */ | |
1107 | if (!usecs || !count) { | |
1108 | clks = count = 0; | |
1109 | } else { | |
1110 | /* Respect maximum limits of the hardware */ | |
1111 | clks = usecs * COAL_CLOCKS_PER_USEC; | |
1112 | if (clks > MAX_COAL_TIME_THRESHOLD) | |
1113 | clks = MAX_COAL_TIME_THRESHOLD; | |
1114 | if (count > MAX_COAL_IO_COUNT) | |
1115 | count = MAX_COAL_IO_COUNT; | |
1116 | } | |
1117 | ||
1118 | spin_lock_irqsave(&host->lock, flags); | |
1119 | mv_set_main_irq_mask(host, coal_disable, 0); | |
1120 | ||
1121 | if (is_dual_hc && !IS_GEN_I(hpriv)) { | |
1122 | /* | |
1123 | * GEN_II/GEN_IIE with dual host controllers: | |
1124 | * one set of global thresholds for the entire chip. | |
1125 | */ | |
1126 | writel(clks, mmio + IRQ_COAL_TIME_THRESHOLD); | |
1127 | writel(count, mmio + IRQ_COAL_IO_THRESHOLD); | |
1128 | /* clear leftover coal IRQ bit */ | |
1129 | writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE); | |
1130 | if (count) | |
1131 | coal_enable = ALL_PORTS_COAL_DONE; | |
1132 | clks = count = 0; /* force clearing of regular regs below */ | |
1133 | } | |
1134 | ||
1135 | /* | |
1136 | * All chips: independent thresholds for each HC on the chip. | |
1137 | */ | |
1138 | hc_mmio = mv_hc_base_from_port(mmio, 0); | |
1139 | writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD); | |
1140 | writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD); | |
1141 | writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE); | |
1142 | if (count) | |
1143 | coal_enable |= PORTS_0_3_COAL_DONE; | |
1144 | if (is_dual_hc) { | |
1145 | hc_mmio = mv_hc_base_from_port(mmio, MV_PORTS_PER_HC); | |
1146 | writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD); | |
1147 | writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD); | |
1148 | writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE); | |
1149 | if (count) | |
1150 | coal_enable |= PORTS_4_7_COAL_DONE; | |
1151 | } | |
1152 | ||
1153 | mv_set_main_irq_mask(host, 0, coal_enable); | |
1154 | spin_unlock_irqrestore(&host->lock, flags); | |
1155 | } | |
1156 | ||
1157 | /** | |
1158 | * mv_start_edma - Enable eDMA engine | |
1159 | * @base: port base address | |
1160 | * @pp: port private data | |
1161 | * | |
1162 | * Verify the local cache of the eDMA state is accurate with a | |
1163 | * WARN_ON. | |
1164 | * | |
1165 | * LOCKING: | |
1166 | * Inherited from caller. | |
1167 | */ | |
1168 | static void mv_start_edma(struct ata_port *ap, void __iomem *port_mmio, | |
1169 | struct mv_port_priv *pp, u8 protocol) | |
1170 | { | |
1171 | int want_ncq = (protocol == ATA_PROT_NCQ); | |
1172 | ||
1173 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { | |
1174 | int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0); | |
1175 | if (want_ncq != using_ncq) | |
1176 | mv_stop_edma(ap); | |
1177 | } | |
1178 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) { | |
1179 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1180 | ||
1181 | mv_edma_cfg(ap, want_ncq, 1); | |
1182 | ||
1183 | mv_set_edma_ptrs(port_mmio, hpriv, pp); | |
1184 | mv_clear_and_enable_port_irqs(ap, port_mmio, DONE_IRQ|ERR_IRQ); | |
1185 | ||
1186 | writelfl(EDMA_EN, port_mmio + EDMA_CMD); | |
1187 | pp->pp_flags |= MV_PP_FLAG_EDMA_EN; | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | static void mv_wait_for_edma_empty_idle(struct ata_port *ap) | |
1192 | { | |
1193 | void __iomem *port_mmio = mv_ap_base(ap); | |
1194 | const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE); | |
1195 | const int per_loop = 5, timeout = (15 * 1000 / per_loop); | |
1196 | int i; | |
1197 | ||
1198 | /* | |
1199 | * Wait for the EDMA engine to finish transactions in progress. | |
1200 | * No idea what a good "timeout" value might be, but measurements | |
1201 | * indicate that it often requires hundreds of microseconds | |
1202 | * with two drives in-use. So we use the 15msec value above | |
1203 | * as a rough guess at what even more drives might require. | |
1204 | */ | |
1205 | for (i = 0; i < timeout; ++i) { | |
1206 | u32 edma_stat = readl(port_mmio + EDMA_STATUS); | |
1207 | if ((edma_stat & empty_idle) == empty_idle) | |
1208 | break; | |
1209 | udelay(per_loop); | |
1210 | } | |
1211 | /* ata_port_info(ap, "%s: %u+ usecs\n", __func__, i); */ | |
1212 | } | |
1213 | ||
1214 | /** | |
1215 | * mv_stop_edma_engine - Disable eDMA engine | |
1216 | * @port_mmio: io base address | |
1217 | * | |
1218 | * LOCKING: | |
1219 | * Inherited from caller. | |
1220 | */ | |
1221 | static int mv_stop_edma_engine(void __iomem *port_mmio) | |
1222 | { | |
1223 | int i; | |
1224 | ||
1225 | /* Disable eDMA. The disable bit auto clears. */ | |
1226 | writelfl(EDMA_DS, port_mmio + EDMA_CMD); | |
1227 | ||
1228 | /* Wait for the chip to confirm eDMA is off. */ | |
1229 | for (i = 10000; i > 0; i--) { | |
1230 | u32 reg = readl(port_mmio + EDMA_CMD); | |
1231 | if (!(reg & EDMA_EN)) | |
1232 | return 0; | |
1233 | udelay(10); | |
1234 | } | |
1235 | return -EIO; | |
1236 | } | |
1237 | ||
1238 | static int mv_stop_edma(struct ata_port *ap) | |
1239 | { | |
1240 | void __iomem *port_mmio = mv_ap_base(ap); | |
1241 | struct mv_port_priv *pp = ap->private_data; | |
1242 | int err = 0; | |
1243 | ||
1244 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) | |
1245 | return 0; | |
1246 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; | |
1247 | mv_wait_for_edma_empty_idle(ap); | |
1248 | if (mv_stop_edma_engine(port_mmio)) { | |
1249 | ata_port_err(ap, "Unable to stop eDMA\n"); | |
1250 | err = -EIO; | |
1251 | } | |
1252 | mv_edma_cfg(ap, 0, 0); | |
1253 | return err; | |
1254 | } | |
1255 | ||
1256 | #ifdef ATA_DEBUG | |
1257 | static void mv_dump_mem(void __iomem *start, unsigned bytes) | |
1258 | { | |
1259 | int b, w; | |
1260 | for (b = 0; b < bytes; ) { | |
1261 | DPRINTK("%p: ", start + b); | |
1262 | for (w = 0; b < bytes && w < 4; w++) { | |
1263 | printk("%08x ", readl(start + b)); | |
1264 | b += sizeof(u32); | |
1265 | } | |
1266 | printk("\n"); | |
1267 | } | |
1268 | } | |
1269 | #endif | |
1270 | #if defined(ATA_DEBUG) || defined(CONFIG_PCI) | |
1271 | static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes) | |
1272 | { | |
1273 | #ifdef ATA_DEBUG | |
1274 | int b, w; | |
1275 | u32 dw; | |
1276 | for (b = 0; b < bytes; ) { | |
1277 | DPRINTK("%02x: ", b); | |
1278 | for (w = 0; b < bytes && w < 4; w++) { | |
1279 | (void) pci_read_config_dword(pdev, b, &dw); | |
1280 | printk("%08x ", dw); | |
1281 | b += sizeof(u32); | |
1282 | } | |
1283 | printk("\n"); | |
1284 | } | |
1285 | #endif | |
1286 | } | |
1287 | #endif | |
1288 | static void mv_dump_all_regs(void __iomem *mmio_base, int port, | |
1289 | struct pci_dev *pdev) | |
1290 | { | |
1291 | #ifdef ATA_DEBUG | |
1292 | void __iomem *hc_base = mv_hc_base(mmio_base, | |
1293 | port >> MV_PORT_HC_SHIFT); | |
1294 | void __iomem *port_base; | |
1295 | int start_port, num_ports, p, start_hc, num_hcs, hc; | |
1296 | ||
1297 | if (0 > port) { | |
1298 | start_hc = start_port = 0; | |
1299 | num_ports = 8; /* shld be benign for 4 port devs */ | |
1300 | num_hcs = 2; | |
1301 | } else { | |
1302 | start_hc = port >> MV_PORT_HC_SHIFT; | |
1303 | start_port = port; | |
1304 | num_ports = num_hcs = 1; | |
1305 | } | |
1306 | DPRINTK("All registers for port(s) %u-%u:\n", start_port, | |
1307 | num_ports > 1 ? num_ports - 1 : start_port); | |
1308 | ||
1309 | if (NULL != pdev) { | |
1310 | DPRINTK("PCI config space regs:\n"); | |
1311 | mv_dump_pci_cfg(pdev, 0x68); | |
1312 | } | |
1313 | DPRINTK("PCI regs:\n"); | |
1314 | mv_dump_mem(mmio_base+0xc00, 0x3c); | |
1315 | mv_dump_mem(mmio_base+0xd00, 0x34); | |
1316 | mv_dump_mem(mmio_base+0xf00, 0x4); | |
1317 | mv_dump_mem(mmio_base+0x1d00, 0x6c); | |
1318 | for (hc = start_hc; hc < start_hc + num_hcs; hc++) { | |
1319 | hc_base = mv_hc_base(mmio_base, hc); | |
1320 | DPRINTK("HC regs (HC %i):\n", hc); | |
1321 | mv_dump_mem(hc_base, 0x1c); | |
1322 | } | |
1323 | for (p = start_port; p < start_port + num_ports; p++) { | |
1324 | port_base = mv_port_base(mmio_base, p); | |
1325 | DPRINTK("EDMA regs (port %i):\n", p); | |
1326 | mv_dump_mem(port_base, 0x54); | |
1327 | DPRINTK("SATA regs (port %i):\n", p); | |
1328 | mv_dump_mem(port_base+0x300, 0x60); | |
1329 | } | |
1330 | #endif | |
1331 | } | |
1332 | ||
1333 | static unsigned int mv_scr_offset(unsigned int sc_reg_in) | |
1334 | { | |
1335 | unsigned int ofs; | |
1336 | ||
1337 | switch (sc_reg_in) { | |
1338 | case SCR_STATUS: | |
1339 | case SCR_CONTROL: | |
1340 | case SCR_ERROR: | |
1341 | ofs = SATA_STATUS + (sc_reg_in * sizeof(u32)); | |
1342 | break; | |
1343 | case SCR_ACTIVE: | |
1344 | ofs = SATA_ACTIVE; /* active is not with the others */ | |
1345 | break; | |
1346 | default: | |
1347 | ofs = 0xffffffffU; | |
1348 | break; | |
1349 | } | |
1350 | return ofs; | |
1351 | } | |
1352 | ||
1353 | static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val) | |
1354 | { | |
1355 | unsigned int ofs = mv_scr_offset(sc_reg_in); | |
1356 | ||
1357 | if (ofs != 0xffffffffU) { | |
1358 | *val = readl(mv_ap_base(link->ap) + ofs); | |
1359 | return 0; | |
1360 | } else | |
1361 | return -EINVAL; | |
1362 | } | |
1363 | ||
1364 | static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val) | |
1365 | { | |
1366 | unsigned int ofs = mv_scr_offset(sc_reg_in); | |
1367 | ||
1368 | if (ofs != 0xffffffffU) { | |
1369 | void __iomem *addr = mv_ap_base(link->ap) + ofs; | |
1370 | struct mv_host_priv *hpriv = link->ap->host->private_data; | |
1371 | if (sc_reg_in == SCR_CONTROL) { | |
1372 | /* | |
1373 | * Workaround for 88SX60x1 FEr SATA#26: | |
1374 | * | |
1375 | * COMRESETs have to take care not to accidentally | |
1376 | * put the drive to sleep when writing SCR_CONTROL. | |
1377 | * Setting bits 12..15 prevents this problem. | |
1378 | * | |
1379 | * So if we see an outbound COMMRESET, set those bits. | |
1380 | * Ditto for the followup write that clears the reset. | |
1381 | * | |
1382 | * The proprietary driver does this for | |
1383 | * all chip versions, and so do we. | |
1384 | */ | |
1385 | if ((val & 0xf) == 1 || (readl(addr) & 0xf) == 1) | |
1386 | val |= 0xf000; | |
1387 | ||
1388 | if (hpriv->hp_flags & MV_HP_FIX_LP_PHY_CTL) { | |
1389 | void __iomem *lp_phy_addr = | |
1390 | mv_ap_base(link->ap) + LP_PHY_CTL; | |
1391 | /* | |
1392 | * Set PHY speed according to SControl speed. | |
1393 | */ | |
1394 | if ((val & 0xf0) == 0x10) | |
1395 | writelfl(0x7, lp_phy_addr); | |
1396 | else | |
1397 | writelfl(0x227, lp_phy_addr); | |
1398 | } | |
1399 | } | |
1400 | writelfl(val, addr); | |
1401 | return 0; | |
1402 | } else | |
1403 | return -EINVAL; | |
1404 | } | |
1405 | ||
1406 | static void mv6_dev_config(struct ata_device *adev) | |
1407 | { | |
1408 | /* | |
1409 | * Deal with Gen-II ("mv6") hardware quirks/restrictions: | |
1410 | * | |
1411 | * Gen-II does not support NCQ over a port multiplier | |
1412 | * (no FIS-based switching). | |
1413 | */ | |
1414 | if (adev->flags & ATA_DFLAG_NCQ) { | |
1415 | if (sata_pmp_attached(adev->link->ap)) { | |
1416 | adev->flags &= ~ATA_DFLAG_NCQ; | |
1417 | ata_dev_info(adev, | |
1418 | "NCQ disabled for command-based switching\n"); | |
1419 | } | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | static int mv_qc_defer(struct ata_queued_cmd *qc) | |
1424 | { | |
1425 | struct ata_link *link = qc->dev->link; | |
1426 | struct ata_port *ap = link->ap; | |
1427 | struct mv_port_priv *pp = ap->private_data; | |
1428 | ||
1429 | /* | |
1430 | * Don't allow new commands if we're in a delayed EH state | |
1431 | * for NCQ and/or FIS-based switching. | |
1432 | */ | |
1433 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) | |
1434 | return ATA_DEFER_PORT; | |
1435 | ||
1436 | /* PIO commands need exclusive link: no other commands [DMA or PIO] | |
1437 | * can run concurrently. | |
1438 | * set excl_link when we want to send a PIO command in DMA mode | |
1439 | * or a non-NCQ command in NCQ mode. | |
1440 | * When we receive a command from that link, and there are no | |
1441 | * outstanding commands, mark a flag to clear excl_link and let | |
1442 | * the command go through. | |
1443 | */ | |
1444 | if (unlikely(ap->excl_link)) { | |
1445 | if (link == ap->excl_link) { | |
1446 | if (ap->nr_active_links) | |
1447 | return ATA_DEFER_PORT; | |
1448 | qc->flags |= ATA_QCFLAG_CLEAR_EXCL; | |
1449 | return 0; | |
1450 | } else | |
1451 | return ATA_DEFER_PORT; | |
1452 | } | |
1453 | ||
1454 | /* | |
1455 | * If the port is completely idle, then allow the new qc. | |
1456 | */ | |
1457 | if (ap->nr_active_links == 0) | |
1458 | return 0; | |
1459 | ||
1460 | /* | |
1461 | * The port is operating in host queuing mode (EDMA) with NCQ | |
1462 | * enabled, allow multiple NCQ commands. EDMA also allows | |
1463 | * queueing multiple DMA commands but libata core currently | |
1464 | * doesn't allow it. | |
1465 | */ | |
1466 | if ((pp->pp_flags & MV_PP_FLAG_EDMA_EN) && | |
1467 | (pp->pp_flags & MV_PP_FLAG_NCQ_EN)) { | |
1468 | if (ata_is_ncq(qc->tf.protocol)) | |
1469 | return 0; | |
1470 | else { | |
1471 | ap->excl_link = link; | |
1472 | return ATA_DEFER_PORT; | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | return ATA_DEFER_PORT; | |
1477 | } | |
1478 | ||
1479 | static void mv_config_fbs(struct ata_port *ap, int want_ncq, int want_fbs) | |
1480 | { | |
1481 | struct mv_port_priv *pp = ap->private_data; | |
1482 | void __iomem *port_mmio; | |
1483 | ||
1484 | u32 fiscfg, *old_fiscfg = &pp->cached.fiscfg; | |
1485 | u32 ltmode, *old_ltmode = &pp->cached.ltmode; | |
1486 | u32 haltcond, *old_haltcond = &pp->cached.haltcond; | |
1487 | ||
1488 | ltmode = *old_ltmode & ~LTMODE_BIT8; | |
1489 | haltcond = *old_haltcond | EDMA_ERR_DEV; | |
1490 | ||
1491 | if (want_fbs) { | |
1492 | fiscfg = *old_fiscfg | FISCFG_SINGLE_SYNC; | |
1493 | ltmode = *old_ltmode | LTMODE_BIT8; | |
1494 | if (want_ncq) | |
1495 | haltcond &= ~EDMA_ERR_DEV; | |
1496 | else | |
1497 | fiscfg |= FISCFG_WAIT_DEV_ERR; | |
1498 | } else { | |
1499 | fiscfg = *old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR); | |
1500 | } | |
1501 | ||
1502 | port_mmio = mv_ap_base(ap); | |
1503 | mv_write_cached_reg(port_mmio + FISCFG, old_fiscfg, fiscfg); | |
1504 | mv_write_cached_reg(port_mmio + LTMODE, old_ltmode, ltmode); | |
1505 | mv_write_cached_reg(port_mmio + EDMA_HALTCOND, old_haltcond, haltcond); | |
1506 | } | |
1507 | ||
1508 | static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq) | |
1509 | { | |
1510 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1511 | u32 old, new; | |
1512 | ||
1513 | /* workaround for 88SX60x1 FEr SATA#25 (part 1) */ | |
1514 | old = readl(hpriv->base + GPIO_PORT_CTL); | |
1515 | if (want_ncq) | |
1516 | new = old | (1 << 22); | |
1517 | else | |
1518 | new = old & ~(1 << 22); | |
1519 | if (new != old) | |
1520 | writel(new, hpriv->base + GPIO_PORT_CTL); | |
1521 | } | |
1522 | ||
1523 | /** | |
1524 | * mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma | |
1525 | * @ap: Port being initialized | |
1526 | * | |
1527 | * There are two DMA modes on these chips: basic DMA, and EDMA. | |
1528 | * | |
1529 | * Bit-0 of the "EDMA RESERVED" register enables/disables use | |
1530 | * of basic DMA on the GEN_IIE versions of the chips. | |
1531 | * | |
1532 | * This bit survives EDMA resets, and must be set for basic DMA | |
1533 | * to function, and should be cleared when EDMA is active. | |
1534 | */ | |
1535 | static void mv_bmdma_enable_iie(struct ata_port *ap, int enable_bmdma) | |
1536 | { | |
1537 | struct mv_port_priv *pp = ap->private_data; | |
1538 | u32 new, *old = &pp->cached.unknown_rsvd; | |
1539 | ||
1540 | if (enable_bmdma) | |
1541 | new = *old | 1; | |
1542 | else | |
1543 | new = *old & ~1; | |
1544 | mv_write_cached_reg(mv_ap_base(ap) + EDMA_UNKNOWN_RSVD, old, new); | |
1545 | } | |
1546 | ||
1547 | /* | |
1548 | * SOC chips have an issue whereby the HDD LEDs don't always blink | |
1549 | * during I/O when NCQ is enabled. Enabling a special "LED blink" mode | |
1550 | * of the SOC takes care of it, generating a steady blink rate when | |
1551 | * any drive on the chip is active. | |
1552 | * | |
1553 | * Unfortunately, the blink mode is a global hardware setting for the SOC, | |
1554 | * so we must use it whenever at least one port on the SOC has NCQ enabled. | |
1555 | * | |
1556 | * We turn "LED blink" off when NCQ is not in use anywhere, because the normal | |
1557 | * LED operation works then, and provides better (more accurate) feedback. | |
1558 | * | |
1559 | * Note that this code assumes that an SOC never has more than one HC onboard. | |
1560 | */ | |
1561 | static void mv_soc_led_blink_enable(struct ata_port *ap) | |
1562 | { | |
1563 | struct ata_host *host = ap->host; | |
1564 | struct mv_host_priv *hpriv = host->private_data; | |
1565 | void __iomem *hc_mmio; | |
1566 | u32 led_ctrl; | |
1567 | ||
1568 | if (hpriv->hp_flags & MV_HP_QUIRK_LED_BLINK_EN) | |
1569 | return; | |
1570 | hpriv->hp_flags |= MV_HP_QUIRK_LED_BLINK_EN; | |
1571 | hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no); | |
1572 | led_ctrl = readl(hc_mmio + SOC_LED_CTRL); | |
1573 | writel(led_ctrl | SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL); | |
1574 | } | |
1575 | ||
1576 | static void mv_soc_led_blink_disable(struct ata_port *ap) | |
1577 | { | |
1578 | struct ata_host *host = ap->host; | |
1579 | struct mv_host_priv *hpriv = host->private_data; | |
1580 | void __iomem *hc_mmio; | |
1581 | u32 led_ctrl; | |
1582 | unsigned int port; | |
1583 | ||
1584 | if (!(hpriv->hp_flags & MV_HP_QUIRK_LED_BLINK_EN)) | |
1585 | return; | |
1586 | ||
1587 | /* disable led-blink only if no ports are using NCQ */ | |
1588 | for (port = 0; port < hpriv->n_ports; port++) { | |
1589 | struct ata_port *this_ap = host->ports[port]; | |
1590 | struct mv_port_priv *pp = this_ap->private_data; | |
1591 | ||
1592 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) | |
1593 | return; | |
1594 | } | |
1595 | ||
1596 | hpriv->hp_flags &= ~MV_HP_QUIRK_LED_BLINK_EN; | |
1597 | hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no); | |
1598 | led_ctrl = readl(hc_mmio + SOC_LED_CTRL); | |
1599 | writel(led_ctrl & ~SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL); | |
1600 | } | |
1601 | ||
1602 | static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma) | |
1603 | { | |
1604 | u32 cfg; | |
1605 | struct mv_port_priv *pp = ap->private_data; | |
1606 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1607 | void __iomem *port_mmio = mv_ap_base(ap); | |
1608 | ||
1609 | /* set up non-NCQ EDMA configuration */ | |
1610 | cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */ | |
1611 | pp->pp_flags &= | |
1612 | ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY); | |
1613 | ||
1614 | if (IS_GEN_I(hpriv)) | |
1615 | cfg |= (1 << 8); /* enab config burst size mask */ | |
1616 | ||
1617 | else if (IS_GEN_II(hpriv)) { | |
1618 | cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN; | |
1619 | mv_60x1_errata_sata25(ap, want_ncq); | |
1620 | ||
1621 | } else if (IS_GEN_IIE(hpriv)) { | |
1622 | int want_fbs = sata_pmp_attached(ap); | |
1623 | /* | |
1624 | * Possible future enhancement: | |
1625 | * | |
1626 | * The chip can use FBS with non-NCQ, if we allow it, | |
1627 | * But first we need to have the error handling in place | |
1628 | * for this mode (datasheet section 7.3.15.4.2.3). | |
1629 | * So disallow non-NCQ FBS for now. | |
1630 | */ | |
1631 | want_fbs &= want_ncq; | |
1632 | ||
1633 | mv_config_fbs(ap, want_ncq, want_fbs); | |
1634 | ||
1635 | if (want_fbs) { | |
1636 | pp->pp_flags |= MV_PP_FLAG_FBS_EN; | |
1637 | cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */ | |
1638 | } | |
1639 | ||
1640 | cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */ | |
1641 | if (want_edma) { | |
1642 | cfg |= (1 << 22); /* enab 4-entry host queue cache */ | |
1643 | if (!IS_SOC(hpriv)) | |
1644 | cfg |= (1 << 18); /* enab early completion */ | |
1645 | } | |
1646 | if (hpriv->hp_flags & MV_HP_CUT_THROUGH) | |
1647 | cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */ | |
1648 | mv_bmdma_enable_iie(ap, !want_edma); | |
1649 | ||
1650 | if (IS_SOC(hpriv)) { | |
1651 | if (want_ncq) | |
1652 | mv_soc_led_blink_enable(ap); | |
1653 | else | |
1654 | mv_soc_led_blink_disable(ap); | |
1655 | } | |
1656 | } | |
1657 | ||
1658 | if (want_ncq) { | |
1659 | cfg |= EDMA_CFG_NCQ; | |
1660 | pp->pp_flags |= MV_PP_FLAG_NCQ_EN; | |
1661 | } | |
1662 | ||
1663 | writelfl(cfg, port_mmio + EDMA_CFG); | |
1664 | } | |
1665 | ||
1666 | static void mv_port_free_dma_mem(struct ata_port *ap) | |
1667 | { | |
1668 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1669 | struct mv_port_priv *pp = ap->private_data; | |
1670 | int tag; | |
1671 | ||
1672 | if (pp->crqb) { | |
1673 | dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma); | |
1674 | pp->crqb = NULL; | |
1675 | } | |
1676 | if (pp->crpb) { | |
1677 | dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma); | |
1678 | pp->crpb = NULL; | |
1679 | } | |
1680 | /* | |
1681 | * For GEN_I, there's no NCQ, so we have only a single sg_tbl. | |
1682 | * For later hardware, we have one unique sg_tbl per NCQ tag. | |
1683 | */ | |
1684 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { | |
1685 | if (pp->sg_tbl[tag]) { | |
1686 | if (tag == 0 || !IS_GEN_I(hpriv)) | |
1687 | dma_pool_free(hpriv->sg_tbl_pool, | |
1688 | pp->sg_tbl[tag], | |
1689 | pp->sg_tbl_dma[tag]); | |
1690 | pp->sg_tbl[tag] = NULL; | |
1691 | } | |
1692 | } | |
1693 | } | |
1694 | ||
1695 | /** | |
1696 | * mv_port_start - Port specific init/start routine. | |
1697 | * @ap: ATA channel to manipulate | |
1698 | * | |
1699 | * Allocate and point to DMA memory, init port private memory, | |
1700 | * zero indices. | |
1701 | * | |
1702 | * LOCKING: | |
1703 | * Inherited from caller. | |
1704 | */ | |
1705 | static int mv_port_start(struct ata_port *ap) | |
1706 | { | |
1707 | struct device *dev = ap->host->dev; | |
1708 | struct mv_host_priv *hpriv = ap->host->private_data; | |
1709 | struct mv_port_priv *pp; | |
1710 | unsigned long flags; | |
1711 | int tag; | |
1712 | ||
1713 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); | |
1714 | if (!pp) | |
1715 | return -ENOMEM; | |
1716 | ap->private_data = pp; | |
1717 | ||
1718 | pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma); | |
1719 | if (!pp->crqb) | |
1720 | return -ENOMEM; | |
1721 | memset(pp->crqb, 0, MV_CRQB_Q_SZ); | |
1722 | ||
1723 | pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma); | |
1724 | if (!pp->crpb) | |
1725 | goto out_port_free_dma_mem; | |
1726 | memset(pp->crpb, 0, MV_CRPB_Q_SZ); | |
1727 | ||
1728 | /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */ | |
1729 | if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0) | |
1730 | ap->flags |= ATA_FLAG_AN; | |
1731 | /* | |
1732 | * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl. | |
1733 | * For later hardware, we need one unique sg_tbl per NCQ tag. | |
1734 | */ | |
1735 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { | |
1736 | if (tag == 0 || !IS_GEN_I(hpriv)) { | |
1737 | pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool, | |
1738 | GFP_KERNEL, &pp->sg_tbl_dma[tag]); | |
1739 | if (!pp->sg_tbl[tag]) | |
1740 | goto out_port_free_dma_mem; | |
1741 | } else { | |
1742 | pp->sg_tbl[tag] = pp->sg_tbl[0]; | |
1743 | pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0]; | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | spin_lock_irqsave(ap->lock, flags); | |
1748 | mv_save_cached_regs(ap); | |
1749 | mv_edma_cfg(ap, 0, 0); | |
1750 | spin_unlock_irqrestore(ap->lock, flags); | |
1751 | ||
1752 | return 0; | |
1753 | ||
1754 | out_port_free_dma_mem: | |
1755 | mv_port_free_dma_mem(ap); | |
1756 | return -ENOMEM; | |
1757 | } | |
1758 | ||
1759 | /** | |
1760 | * mv_port_stop - Port specific cleanup/stop routine. | |
1761 | * @ap: ATA channel to manipulate | |
1762 | * | |
1763 | * Stop DMA, cleanup port memory. | |
1764 | * | |
1765 | * LOCKING: | |
1766 | * This routine uses the host lock to protect the DMA stop. | |
1767 | */ | |
1768 | static void mv_port_stop(struct ata_port *ap) | |
1769 | { | |
1770 | unsigned long flags; | |
1771 | ||
1772 | spin_lock_irqsave(ap->lock, flags); | |
1773 | mv_stop_edma(ap); | |
1774 | mv_enable_port_irqs(ap, 0); | |
1775 | spin_unlock_irqrestore(ap->lock, flags); | |
1776 | mv_port_free_dma_mem(ap); | |
1777 | } | |
1778 | ||
1779 | /** | |
1780 | * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries | |
1781 | * @qc: queued command whose SG list to source from | |
1782 | * | |
1783 | * Populate the SG list and mark the last entry. | |
1784 | * | |
1785 | * LOCKING: | |
1786 | * Inherited from caller. | |
1787 | */ | |
1788 | static void mv_fill_sg(struct ata_queued_cmd *qc) | |
1789 | { | |
1790 | struct mv_port_priv *pp = qc->ap->private_data; | |
1791 | struct scatterlist *sg; | |
1792 | struct mv_sg *mv_sg, *last_sg = NULL; | |
1793 | unsigned int si; | |
1794 | ||
1795 | mv_sg = pp->sg_tbl[qc->tag]; | |
1796 | for_each_sg(qc->sg, sg, qc->n_elem, si) { | |
1797 | dma_addr_t addr = sg_dma_address(sg); | |
1798 | u32 sg_len = sg_dma_len(sg); | |
1799 | ||
1800 | while (sg_len) { | |
1801 | u32 offset = addr & 0xffff; | |
1802 | u32 len = sg_len; | |
1803 | ||
1804 | if (offset + len > 0x10000) | |
1805 | len = 0x10000 - offset; | |
1806 | ||
1807 | mv_sg->addr = cpu_to_le32(addr & 0xffffffff); | |
1808 | mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); | |
1809 | mv_sg->flags_size = cpu_to_le32(len & 0xffff); | |
1810 | mv_sg->reserved = 0; | |
1811 | ||
1812 | sg_len -= len; | |
1813 | addr += len; | |
1814 | ||
1815 | last_sg = mv_sg; | |
1816 | mv_sg++; | |
1817 | } | |
1818 | } | |
1819 | ||
1820 | if (likely(last_sg)) | |
1821 | last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL); | |
1822 | mb(); /* ensure data structure is visible to the chipset */ | |
1823 | } | |
1824 | ||
1825 | static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last) | |
1826 | { | |
1827 | u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS | | |
1828 | (last ? CRQB_CMD_LAST : 0); | |
1829 | *cmdw = cpu_to_le16(tmp); | |
1830 | } | |
1831 | ||
1832 | /** | |
1833 | * mv_sff_irq_clear - Clear hardware interrupt after DMA. | |
1834 | * @ap: Port associated with this ATA transaction. | |
1835 | * | |
1836 | * We need this only for ATAPI bmdma transactions, | |
1837 | * as otherwise we experience spurious interrupts | |
1838 | * after libata-sff handles the bmdma interrupts. | |
1839 | */ | |
1840 | static void mv_sff_irq_clear(struct ata_port *ap) | |
1841 | { | |
1842 | mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), ERR_IRQ); | |
1843 | } | |
1844 | ||
1845 | /** | |
1846 | * mv_check_atapi_dma - Filter ATAPI cmds which are unsuitable for DMA. | |
1847 | * @qc: queued command to check for chipset/DMA compatibility. | |
1848 | * | |
1849 | * The bmdma engines cannot handle speculative data sizes | |
1850 | * (bytecount under/over flow). So only allow DMA for | |
1851 | * data transfer commands with known data sizes. | |
1852 | * | |
1853 | * LOCKING: | |
1854 | * Inherited from caller. | |
1855 | */ | |
1856 | static int mv_check_atapi_dma(struct ata_queued_cmd *qc) | |
1857 | { | |
1858 | struct scsi_cmnd *scmd = qc->scsicmd; | |
1859 | ||
1860 | if (scmd) { | |
1861 | switch (scmd->cmnd[0]) { | |
1862 | case READ_6: | |
1863 | case READ_10: | |
1864 | case READ_12: | |
1865 | case WRITE_6: | |
1866 | case WRITE_10: | |
1867 | case WRITE_12: | |
1868 | case GPCMD_READ_CD: | |
1869 | case GPCMD_SEND_DVD_STRUCTURE: | |
1870 | case GPCMD_SEND_CUE_SHEET: | |
1871 | return 0; /* DMA is safe */ | |
1872 | } | |
1873 | } | |
1874 | return -EOPNOTSUPP; /* use PIO instead */ | |
1875 | } | |
1876 | ||
1877 | /** | |
1878 | * mv_bmdma_setup - Set up BMDMA transaction | |
1879 | * @qc: queued command to prepare DMA for. | |
1880 | * | |
1881 | * LOCKING: | |
1882 | * Inherited from caller. | |
1883 | */ | |
1884 | static void mv_bmdma_setup(struct ata_queued_cmd *qc) | |
1885 | { | |
1886 | struct ata_port *ap = qc->ap; | |
1887 | void __iomem *port_mmio = mv_ap_base(ap); | |
1888 | struct mv_port_priv *pp = ap->private_data; | |
1889 | ||
1890 | mv_fill_sg(qc); | |
1891 | ||
1892 | /* clear all DMA cmd bits */ | |
1893 | writel(0, port_mmio + BMDMA_CMD); | |
1894 | ||
1895 | /* load PRD table addr. */ | |
1896 | writel((pp->sg_tbl_dma[qc->tag] >> 16) >> 16, | |
1897 | port_mmio + BMDMA_PRD_HIGH); | |
1898 | writelfl(pp->sg_tbl_dma[qc->tag], | |
1899 | port_mmio + BMDMA_PRD_LOW); | |
1900 | ||
1901 | /* issue r/w command */ | |
1902 | ap->ops->sff_exec_command(ap, &qc->tf); | |
1903 | } | |
1904 | ||
1905 | /** | |
1906 | * mv_bmdma_start - Start a BMDMA transaction | |
1907 | * @qc: queued command to start DMA on. | |
1908 | * | |
1909 | * LOCKING: | |
1910 | * Inherited from caller. | |
1911 | */ | |
1912 | static void mv_bmdma_start(struct ata_queued_cmd *qc) | |
1913 | { | |
1914 | struct ata_port *ap = qc->ap; | |
1915 | void __iomem *port_mmio = mv_ap_base(ap); | |
1916 | unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); | |
1917 | u32 cmd = (rw ? 0 : ATA_DMA_WR) | ATA_DMA_START; | |
1918 | ||
1919 | /* start host DMA transaction */ | |
1920 | writelfl(cmd, port_mmio + BMDMA_CMD); | |
1921 | } | |
1922 | ||
1923 | /** | |
1924 | * mv_bmdma_stop - Stop BMDMA transfer | |
1925 | * @qc: queued command to stop DMA on. | |
1926 | * | |
1927 | * Clears the ATA_DMA_START flag in the bmdma control register | |
1928 | * | |
1929 | * LOCKING: | |
1930 | * Inherited from caller. | |
1931 | */ | |
1932 | static void mv_bmdma_stop_ap(struct ata_port *ap) | |
1933 | { | |
1934 | void __iomem *port_mmio = mv_ap_base(ap); | |
1935 | u32 cmd; | |
1936 | ||
1937 | /* clear start/stop bit */ | |
1938 | cmd = readl(port_mmio + BMDMA_CMD); | |
1939 | if (cmd & ATA_DMA_START) { | |
1940 | cmd &= ~ATA_DMA_START; | |
1941 | writelfl(cmd, port_mmio + BMDMA_CMD); | |
1942 | ||
1943 | /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */ | |
1944 | ata_sff_dma_pause(ap); | |
1945 | } | |
1946 | } | |
1947 | ||
1948 | static void mv_bmdma_stop(struct ata_queued_cmd *qc) | |
1949 | { | |
1950 | mv_bmdma_stop_ap(qc->ap); | |
1951 | } | |
1952 | ||
1953 | /** | |
1954 | * mv_bmdma_status - Read BMDMA status | |
1955 | * @ap: port for which to retrieve DMA status. | |
1956 | * | |
1957 | * Read and return equivalent of the sff BMDMA status register. | |
1958 | * | |
1959 | * LOCKING: | |
1960 | * Inherited from caller. | |
1961 | */ | |
1962 | static u8 mv_bmdma_status(struct ata_port *ap) | |
1963 | { | |
1964 | void __iomem *port_mmio = mv_ap_base(ap); | |
1965 | u32 reg, status; | |
1966 | ||
1967 | /* | |
1968 | * Other bits are valid only if ATA_DMA_ACTIVE==0, | |
1969 | * and the ATA_DMA_INTR bit doesn't exist. | |
1970 | */ | |
1971 | reg = readl(port_mmio + BMDMA_STATUS); | |
1972 | if (reg & ATA_DMA_ACTIVE) | |
1973 | status = ATA_DMA_ACTIVE; | |
1974 | else if (reg & ATA_DMA_ERR) | |
1975 | status = (reg & ATA_DMA_ERR) | ATA_DMA_INTR; | |
1976 | else { | |
1977 | /* | |
1978 | * Just because DMA_ACTIVE is 0 (DMA completed), | |
1979 | * this does _not_ mean the device is "done". | |
1980 | * So we should not yet be signalling ATA_DMA_INTR | |
1981 | * in some cases. Eg. DSM/TRIM, and perhaps others. | |
1982 | */ | |
1983 | mv_bmdma_stop_ap(ap); | |
1984 | if (ioread8(ap->ioaddr.altstatus_addr) & ATA_BUSY) | |
1985 | status = 0; | |
1986 | else | |
1987 | status = ATA_DMA_INTR; | |
1988 | } | |
1989 | return status; | |
1990 | } | |
1991 | ||
1992 | static void mv_rw_multi_errata_sata24(struct ata_queued_cmd *qc) | |
1993 | { | |
1994 | struct ata_taskfile *tf = &qc->tf; | |
1995 | /* | |
1996 | * Workaround for 88SX60x1 FEr SATA#24. | |
1997 | * | |
1998 | * Chip may corrupt WRITEs if multi_count >= 4kB. | |
1999 | * Note that READs are unaffected. | |
2000 | * | |
2001 | * It's not clear if this errata really means "4K bytes", | |
2002 | * or if it always happens for multi_count > 7 | |
2003 | * regardless of device sector_size. | |
2004 | * | |
2005 | * So, for safety, any write with multi_count > 7 | |
2006 | * gets converted here into a regular PIO write instead: | |
2007 | */ | |
2008 | if ((tf->flags & ATA_TFLAG_WRITE) && is_multi_taskfile(tf)) { | |
2009 | if (qc->dev->multi_count > 7) { | |
2010 | switch (tf->command) { | |
2011 | case ATA_CMD_WRITE_MULTI: | |
2012 | tf->command = ATA_CMD_PIO_WRITE; | |
2013 | break; | |
2014 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
2015 | tf->flags &= ~ATA_TFLAG_FUA; /* ugh */ | |
2016 | /* fall through */ | |
2017 | case ATA_CMD_WRITE_MULTI_EXT: | |
2018 | tf->command = ATA_CMD_PIO_WRITE_EXT; | |
2019 | break; | |
2020 | } | |
2021 | } | |
2022 | } | |
2023 | } | |
2024 | ||
2025 | /** | |
2026 | * mv_qc_prep - Host specific command preparation. | |
2027 | * @qc: queued command to prepare | |
2028 | * | |
2029 | * This routine simply redirects to the general purpose routine | |
2030 | * if command is not DMA. Else, it handles prep of the CRQB | |
2031 | * (command request block), does some sanity checking, and calls | |
2032 | * the SG load routine. | |
2033 | * | |
2034 | * LOCKING: | |
2035 | * Inherited from caller. | |
2036 | */ | |
2037 | static void mv_qc_prep(struct ata_queued_cmd *qc) | |
2038 | { | |
2039 | struct ata_port *ap = qc->ap; | |
2040 | struct mv_port_priv *pp = ap->private_data; | |
2041 | __le16 *cw; | |
2042 | struct ata_taskfile *tf = &qc->tf; | |
2043 | u16 flags = 0; | |
2044 | unsigned in_index; | |
2045 | ||
2046 | switch (tf->protocol) { | |
2047 | case ATA_PROT_DMA: | |
2048 | if (tf->command == ATA_CMD_DSM) | |
2049 | return; | |
2050 | /* fall-thru */ | |
2051 | case ATA_PROT_NCQ: | |
2052 | break; /* continue below */ | |
2053 | case ATA_PROT_PIO: | |
2054 | mv_rw_multi_errata_sata24(qc); | |
2055 | return; | |
2056 | default: | |
2057 | return; | |
2058 | } | |
2059 | ||
2060 | /* Fill in command request block | |
2061 | */ | |
2062 | if (!(tf->flags & ATA_TFLAG_WRITE)) | |
2063 | flags |= CRQB_FLAG_READ; | |
2064 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); | |
2065 | flags |= qc->tag << CRQB_TAG_SHIFT; | |
2066 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; | |
2067 | ||
2068 | /* get current queue index from software */ | |
2069 | in_index = pp->req_idx; | |
2070 | ||
2071 | pp->crqb[in_index].sg_addr = | |
2072 | cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); | |
2073 | pp->crqb[in_index].sg_addr_hi = | |
2074 | cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); | |
2075 | pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags); | |
2076 | ||
2077 | cw = &pp->crqb[in_index].ata_cmd[0]; | |
2078 | ||
2079 | /* Sadly, the CRQB cannot accommodate all registers--there are | |
2080 | * only 11 bytes...so we must pick and choose required | |
2081 | * registers based on the command. So, we drop feature and | |
2082 | * hob_feature for [RW] DMA commands, but they are needed for | |
2083 | * NCQ. NCQ will drop hob_nsect, which is not needed there | |
2084 | * (nsect is used only for the tag; feat/hob_feat hold true nsect). | |
2085 | */ | |
2086 | switch (tf->command) { | |
2087 | case ATA_CMD_READ: | |
2088 | case ATA_CMD_READ_EXT: | |
2089 | case ATA_CMD_WRITE: | |
2090 | case ATA_CMD_WRITE_EXT: | |
2091 | case ATA_CMD_WRITE_FUA_EXT: | |
2092 | mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0); | |
2093 | break; | |
2094 | case ATA_CMD_FPDMA_READ: | |
2095 | case ATA_CMD_FPDMA_WRITE: | |
2096 | mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0); | |
2097 | mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0); | |
2098 | break; | |
2099 | default: | |
2100 | /* The only other commands EDMA supports in non-queued and | |
2101 | * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none | |
2102 | * of which are defined/used by Linux. If we get here, this | |
2103 | * driver needs work. | |
2104 | * | |
2105 | * FIXME: modify libata to give qc_prep a return value and | |
2106 | * return error here. | |
2107 | */ | |
2108 | BUG_ON(tf->command); | |
2109 | break; | |
2110 | } | |
2111 | mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0); | |
2112 | mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0); | |
2113 | mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0); | |
2114 | mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0); | |
2115 | mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0); | |
2116 | mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0); | |
2117 | mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0); | |
2118 | mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0); | |
2119 | mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */ | |
2120 | ||
2121 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) | |
2122 | return; | |
2123 | mv_fill_sg(qc); | |
2124 | } | |
2125 | ||
2126 | /** | |
2127 | * mv_qc_prep_iie - Host specific command preparation. | |
2128 | * @qc: queued command to prepare | |
2129 | * | |
2130 | * This routine simply redirects to the general purpose routine | |
2131 | * if command is not DMA. Else, it handles prep of the CRQB | |
2132 | * (command request block), does some sanity checking, and calls | |
2133 | * the SG load routine. | |
2134 | * | |
2135 | * LOCKING: | |
2136 | * Inherited from caller. | |
2137 | */ | |
2138 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc) | |
2139 | { | |
2140 | struct ata_port *ap = qc->ap; | |
2141 | struct mv_port_priv *pp = ap->private_data; | |
2142 | struct mv_crqb_iie *crqb; | |
2143 | struct ata_taskfile *tf = &qc->tf; | |
2144 | unsigned in_index; | |
2145 | u32 flags = 0; | |
2146 | ||
2147 | if ((tf->protocol != ATA_PROT_DMA) && | |
2148 | (tf->protocol != ATA_PROT_NCQ)) | |
2149 | return; | |
2150 | if (tf->command == ATA_CMD_DSM) | |
2151 | return; /* use bmdma for this */ | |
2152 | ||
2153 | /* Fill in Gen IIE command request block */ | |
2154 | if (!(tf->flags & ATA_TFLAG_WRITE)) | |
2155 | flags |= CRQB_FLAG_READ; | |
2156 | ||
2157 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); | |
2158 | flags |= qc->tag << CRQB_TAG_SHIFT; | |
2159 | flags |= qc->tag << CRQB_HOSTQ_SHIFT; | |
2160 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; | |
2161 | ||
2162 | /* get current queue index from software */ | |
2163 | in_index = pp->req_idx; | |
2164 | ||
2165 | crqb = (struct mv_crqb_iie *) &pp->crqb[in_index]; | |
2166 | crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); | |
2167 | crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); | |
2168 | crqb->flags = cpu_to_le32(flags); | |
2169 | ||
2170 | crqb->ata_cmd[0] = cpu_to_le32( | |
2171 | (tf->command << 16) | | |
2172 | (tf->feature << 24) | |
2173 | ); | |
2174 | crqb->ata_cmd[1] = cpu_to_le32( | |
2175 | (tf->lbal << 0) | | |
2176 | (tf->lbam << 8) | | |
2177 | (tf->lbah << 16) | | |
2178 | (tf->device << 24) | |
2179 | ); | |
2180 | crqb->ata_cmd[2] = cpu_to_le32( | |
2181 | (tf->hob_lbal << 0) | | |
2182 | (tf->hob_lbam << 8) | | |
2183 | (tf->hob_lbah << 16) | | |
2184 | (tf->hob_feature << 24) | |
2185 | ); | |
2186 | crqb->ata_cmd[3] = cpu_to_le32( | |
2187 | (tf->nsect << 0) | | |
2188 | (tf->hob_nsect << 8) | |
2189 | ); | |
2190 | ||
2191 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) | |
2192 | return; | |
2193 | mv_fill_sg(qc); | |
2194 | } | |
2195 | ||
2196 | /** | |
2197 | * mv_sff_check_status - fetch device status, if valid | |
2198 | * @ap: ATA port to fetch status from | |
2199 | * | |
2200 | * When using command issue via mv_qc_issue_fis(), | |
2201 | * the initial ATA_BUSY state does not show up in the | |
2202 | * ATA status (shadow) register. This can confuse libata! | |
2203 | * | |
2204 | * So we have a hook here to fake ATA_BUSY for that situation, | |
2205 | * until the first time a BUSY, DRQ, or ERR bit is seen. | |
2206 | * | |
2207 | * The rest of the time, it simply returns the ATA status register. | |
2208 | */ | |
2209 | static u8 mv_sff_check_status(struct ata_port *ap) | |
2210 | { | |
2211 | u8 stat = ioread8(ap->ioaddr.status_addr); | |
2212 | struct mv_port_priv *pp = ap->private_data; | |
2213 | ||
2214 | if (pp->pp_flags & MV_PP_FLAG_FAKE_ATA_BUSY) { | |
2215 | if (stat & (ATA_BUSY | ATA_DRQ | ATA_ERR)) | |
2216 | pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; | |
2217 | else | |
2218 | stat = ATA_BUSY; | |
2219 | } | |
2220 | return stat; | |
2221 | } | |
2222 | ||
2223 | /** | |
2224 | * mv_send_fis - Send a FIS, using the "Vendor-Unique FIS" register | |
2225 | * @fis: fis to be sent | |
2226 | * @nwords: number of 32-bit words in the fis | |
2227 | */ | |
2228 | static unsigned int mv_send_fis(struct ata_port *ap, u32 *fis, int nwords) | |
2229 | { | |
2230 | void __iomem *port_mmio = mv_ap_base(ap); | |
2231 | u32 ifctl, old_ifctl, ifstat; | |
2232 | int i, timeout = 200, final_word = nwords - 1; | |
2233 | ||
2234 | /* Initiate FIS transmission mode */ | |
2235 | old_ifctl = readl(port_mmio + SATA_IFCTL); | |
2236 | ifctl = 0x100 | (old_ifctl & 0xf); | |
2237 | writelfl(ifctl, port_mmio + SATA_IFCTL); | |
2238 | ||
2239 | /* Send all words of the FIS except for the final word */ | |
2240 | for (i = 0; i < final_word; ++i) | |
2241 | writel(fis[i], port_mmio + VENDOR_UNIQUE_FIS); | |
2242 | ||
2243 | /* Flag end-of-transmission, and then send the final word */ | |
2244 | writelfl(ifctl | 0x200, port_mmio + SATA_IFCTL); | |
2245 | writelfl(fis[final_word], port_mmio + VENDOR_UNIQUE_FIS); | |
2246 | ||
2247 | /* | |
2248 | * Wait for FIS transmission to complete. | |
2249 | * This typically takes just a single iteration. | |
2250 | */ | |
2251 | do { | |
2252 | ifstat = readl(port_mmio + SATA_IFSTAT); | |
2253 | } while (!(ifstat & 0x1000) && --timeout); | |
2254 | ||
2255 | /* Restore original port configuration */ | |
2256 | writelfl(old_ifctl, port_mmio + SATA_IFCTL); | |
2257 | ||
2258 | /* See if it worked */ | |
2259 | if ((ifstat & 0x3000) != 0x1000) { | |
2260 | ata_port_warn(ap, "%s transmission error, ifstat=%08x\n", | |
2261 | __func__, ifstat); | |
2262 | return AC_ERR_OTHER; | |
2263 | } | |
2264 | return 0; | |
2265 | } | |
2266 | ||
2267 | /** | |
2268 | * mv_qc_issue_fis - Issue a command directly as a FIS | |
2269 | * @qc: queued command to start | |
2270 | * | |
2271 | * Note that the ATA shadow registers are not updated | |
2272 | * after command issue, so the device will appear "READY" | |
2273 | * if polled, even while it is BUSY processing the command. | |
2274 | * | |
2275 | * So we use a status hook to fake ATA_BUSY until the drive changes state. | |
2276 | * | |
2277 | * Note: we don't get updated shadow regs on *completion* | |
2278 | * of non-data commands. So avoid sending them via this function, | |
2279 | * as they will appear to have completed immediately. | |
2280 | * | |
2281 | * GEN_IIE has special registers that we could get the result tf from, | |
2282 | * but earlier chipsets do not. For now, we ignore those registers. | |
2283 | */ | |
2284 | static unsigned int mv_qc_issue_fis(struct ata_queued_cmd *qc) | |
2285 | { | |
2286 | struct ata_port *ap = qc->ap; | |
2287 | struct mv_port_priv *pp = ap->private_data; | |
2288 | struct ata_link *link = qc->dev->link; | |
2289 | u32 fis[5]; | |
2290 | int err = 0; | |
2291 | ||
2292 | ata_tf_to_fis(&qc->tf, link->pmp, 1, (void *)fis); | |
2293 | err = mv_send_fis(ap, fis, ARRAY_SIZE(fis)); | |
2294 | if (err) | |
2295 | return err; | |
2296 | ||
2297 | switch (qc->tf.protocol) { | |
2298 | case ATAPI_PROT_PIO: | |
2299 | pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY; | |
2300 | /* fall through */ | |
2301 | case ATAPI_PROT_NODATA: | |
2302 | ap->hsm_task_state = HSM_ST_FIRST; | |
2303 | break; | |
2304 | case ATA_PROT_PIO: | |
2305 | pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY; | |
2306 | if (qc->tf.flags & ATA_TFLAG_WRITE) | |
2307 | ap->hsm_task_state = HSM_ST_FIRST; | |
2308 | else | |
2309 | ap->hsm_task_state = HSM_ST; | |
2310 | break; | |
2311 | default: | |
2312 | ap->hsm_task_state = HSM_ST_LAST; | |
2313 | break; | |
2314 | } | |
2315 | ||
2316 | if (qc->tf.flags & ATA_TFLAG_POLLING) | |
2317 | ata_sff_queue_pio_task(link, 0); | |
2318 | return 0; | |
2319 | } | |
2320 | ||
2321 | /** | |
2322 | * mv_qc_issue - Initiate a command to the host | |
2323 | * @qc: queued command to start | |
2324 | * | |
2325 | * This routine simply redirects to the general purpose routine | |
2326 | * if command is not DMA. Else, it sanity checks our local | |
2327 | * caches of the request producer/consumer indices then enables | |
2328 | * DMA and bumps the request producer index. | |
2329 | * | |
2330 | * LOCKING: | |
2331 | * Inherited from caller. | |
2332 | */ | |
2333 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc) | |
2334 | { | |
2335 | static int limit_warnings = 10; | |
2336 | struct ata_port *ap = qc->ap; | |
2337 | void __iomem *port_mmio = mv_ap_base(ap); | |
2338 | struct mv_port_priv *pp = ap->private_data; | |
2339 | u32 in_index; | |
2340 | unsigned int port_irqs; | |
2341 | ||
2342 | pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; /* paranoia */ | |
2343 | ||
2344 | switch (qc->tf.protocol) { | |
2345 | case ATA_PROT_DMA: | |
2346 | if (qc->tf.command == ATA_CMD_DSM) { | |
2347 | if (!ap->ops->bmdma_setup) /* no bmdma on GEN_I */ | |
2348 | return AC_ERR_OTHER; | |
2349 | break; /* use bmdma for this */ | |
2350 | } | |
2351 | /* fall thru */ | |
2352 | case ATA_PROT_NCQ: | |
2353 | mv_start_edma(ap, port_mmio, pp, qc->tf.protocol); | |
2354 | pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK; | |
2355 | in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; | |
2356 | ||
2357 | /* Write the request in pointer to kick the EDMA to life */ | |
2358 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index, | |
2359 | port_mmio + EDMA_REQ_Q_IN_PTR); | |
2360 | return 0; | |
2361 | ||
2362 | case ATA_PROT_PIO: | |
2363 | /* | |
2364 | * Errata SATA#16, SATA#24: warn if multiple DRQs expected. | |
2365 | * | |
2366 | * Someday, we might implement special polling workarounds | |
2367 | * for these, but it all seems rather unnecessary since we | |
2368 | * normally use only DMA for commands which transfer more | |
2369 | * than a single block of data. | |
2370 | * | |
2371 | * Much of the time, this could just work regardless. | |
2372 | * So for now, just log the incident, and allow the attempt. | |
2373 | */ | |
2374 | if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) { | |
2375 | --limit_warnings; | |
2376 | ata_link_warn(qc->dev->link, DRV_NAME | |
2377 | ": attempting PIO w/multiple DRQ: " | |
2378 | "this may fail due to h/w errata\n"); | |
2379 | } | |
2380 | /* drop through */ | |
2381 | case ATA_PROT_NODATA: | |
2382 | case ATAPI_PROT_PIO: | |
2383 | case ATAPI_PROT_NODATA: | |
2384 | if (ap->flags & ATA_FLAG_PIO_POLLING) | |
2385 | qc->tf.flags |= ATA_TFLAG_POLLING; | |
2386 | break; | |
2387 | } | |
2388 | ||
2389 | if (qc->tf.flags & ATA_TFLAG_POLLING) | |
2390 | port_irqs = ERR_IRQ; /* mask device interrupt when polling */ | |
2391 | else | |
2392 | port_irqs = ERR_IRQ | DONE_IRQ; /* unmask all interrupts */ | |
2393 | ||
2394 | /* | |
2395 | * We're about to send a non-EDMA capable command to the | |
2396 | * port. Turn off EDMA so there won't be problems accessing | |
2397 | * shadow block, etc registers. | |
2398 | */ | |
2399 | mv_stop_edma(ap); | |
2400 | mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), port_irqs); | |
2401 | mv_pmp_select(ap, qc->dev->link->pmp); | |
2402 | ||
2403 | if (qc->tf.command == ATA_CMD_READ_LOG_EXT) { | |
2404 | struct mv_host_priv *hpriv = ap->host->private_data; | |
2405 | /* | |
2406 | * Workaround for 88SX60x1 FEr SATA#25 (part 2). | |
2407 | * | |
2408 | * After any NCQ error, the READ_LOG_EXT command | |
2409 | * from libata-eh *must* use mv_qc_issue_fis(). | |
2410 | * Otherwise it might fail, due to chip errata. | |
2411 | * | |
2412 | * Rather than special-case it, we'll just *always* | |
2413 | * use this method here for READ_LOG_EXT, making for | |
2414 | * easier testing. | |
2415 | */ | |
2416 | if (IS_GEN_II(hpriv)) | |
2417 | return mv_qc_issue_fis(qc); | |
2418 | } | |
2419 | return ata_bmdma_qc_issue(qc); | |
2420 | } | |
2421 | ||
2422 | static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap) | |
2423 | { | |
2424 | struct mv_port_priv *pp = ap->private_data; | |
2425 | struct ata_queued_cmd *qc; | |
2426 | ||
2427 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) | |
2428 | return NULL; | |
2429 | qc = ata_qc_from_tag(ap, ap->link.active_tag); | |
2430 | if (qc && !(qc->tf.flags & ATA_TFLAG_POLLING)) | |
2431 | return qc; | |
2432 | return NULL; | |
2433 | } | |
2434 | ||
2435 | static void mv_pmp_error_handler(struct ata_port *ap) | |
2436 | { | |
2437 | unsigned int pmp, pmp_map; | |
2438 | struct mv_port_priv *pp = ap->private_data; | |
2439 | ||
2440 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) { | |
2441 | /* | |
2442 | * Perform NCQ error analysis on failed PMPs | |
2443 | * before we freeze the port entirely. | |
2444 | * | |
2445 | * The failed PMPs are marked earlier by mv_pmp_eh_prep(). | |
2446 | */ | |
2447 | pmp_map = pp->delayed_eh_pmp_map; | |
2448 | pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH; | |
2449 | for (pmp = 0; pmp_map != 0; pmp++) { | |
2450 | unsigned int this_pmp = (1 << pmp); | |
2451 | if (pmp_map & this_pmp) { | |
2452 | struct ata_link *link = &ap->pmp_link[pmp]; | |
2453 | pmp_map &= ~this_pmp; | |
2454 | ata_eh_analyze_ncq_error(link); | |
2455 | } | |
2456 | } | |
2457 | ata_port_freeze(ap); | |
2458 | } | |
2459 | sata_pmp_error_handler(ap); | |
2460 | } | |
2461 | ||
2462 | static unsigned int mv_get_err_pmp_map(struct ata_port *ap) | |
2463 | { | |
2464 | void __iomem *port_mmio = mv_ap_base(ap); | |
2465 | ||
2466 | return readl(port_mmio + SATA_TESTCTL) >> 16; | |
2467 | } | |
2468 | ||
2469 | static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map) | |
2470 | { | |
2471 | struct ata_eh_info *ehi; | |
2472 | unsigned int pmp; | |
2473 | ||
2474 | /* | |
2475 | * Initialize EH info for PMPs which saw device errors | |
2476 | */ | |
2477 | ehi = &ap->link.eh_info; | |
2478 | for (pmp = 0; pmp_map != 0; pmp++) { | |
2479 | unsigned int this_pmp = (1 << pmp); | |
2480 | if (pmp_map & this_pmp) { | |
2481 | struct ata_link *link = &ap->pmp_link[pmp]; | |
2482 | ||
2483 | pmp_map &= ~this_pmp; | |
2484 | ehi = &link->eh_info; | |
2485 | ata_ehi_clear_desc(ehi); | |
2486 | ata_ehi_push_desc(ehi, "dev err"); | |
2487 | ehi->err_mask |= AC_ERR_DEV; | |
2488 | ehi->action |= ATA_EH_RESET; | |
2489 | ata_link_abort(link); | |
2490 | } | |
2491 | } | |
2492 | } | |
2493 | ||
2494 | static int mv_req_q_empty(struct ata_port *ap) | |
2495 | { | |
2496 | void __iomem *port_mmio = mv_ap_base(ap); | |
2497 | u32 in_ptr, out_ptr; | |
2498 | ||
2499 | in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR) | |
2500 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; | |
2501 | out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR) | |
2502 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; | |
2503 | return (in_ptr == out_ptr); /* 1 == queue_is_empty */ | |
2504 | } | |
2505 | ||
2506 | static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap) | |
2507 | { | |
2508 | struct mv_port_priv *pp = ap->private_data; | |
2509 | int failed_links; | |
2510 | unsigned int old_map, new_map; | |
2511 | ||
2512 | /* | |
2513 | * Device error during FBS+NCQ operation: | |
2514 | * | |
2515 | * Set a port flag to prevent further I/O being enqueued. | |
2516 | * Leave the EDMA running to drain outstanding commands from this port. | |
2517 | * Perform the post-mortem/EH only when all responses are complete. | |
2518 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2). | |
2519 | */ | |
2520 | if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) { | |
2521 | pp->pp_flags |= MV_PP_FLAG_DELAYED_EH; | |
2522 | pp->delayed_eh_pmp_map = 0; | |
2523 | } | |
2524 | old_map = pp->delayed_eh_pmp_map; | |
2525 | new_map = old_map | mv_get_err_pmp_map(ap); | |
2526 | ||
2527 | if (old_map != new_map) { | |
2528 | pp->delayed_eh_pmp_map = new_map; | |
2529 | mv_pmp_eh_prep(ap, new_map & ~old_map); | |
2530 | } | |
2531 | failed_links = hweight16(new_map); | |
2532 | ||
2533 | ata_port_info(ap, | |
2534 | "%s: pmp_map=%04x qc_map=%04x failed_links=%d nr_active_links=%d\n", | |
2535 | __func__, pp->delayed_eh_pmp_map, | |
2536 | ap->qc_active, failed_links, | |
2537 | ap->nr_active_links); | |
2538 | ||
2539 | if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) { | |
2540 | mv_process_crpb_entries(ap, pp); | |
2541 | mv_stop_edma(ap); | |
2542 | mv_eh_freeze(ap); | |
2543 | ata_port_info(ap, "%s: done\n", __func__); | |
2544 | return 1; /* handled */ | |
2545 | } | |
2546 | ata_port_info(ap, "%s: waiting\n", __func__); | |
2547 | return 1; /* handled */ | |
2548 | } | |
2549 | ||
2550 | static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap) | |
2551 | { | |
2552 | /* | |
2553 | * Possible future enhancement: | |
2554 | * | |
2555 | * FBS+non-NCQ operation is not yet implemented. | |
2556 | * See related notes in mv_edma_cfg(). | |
2557 | * | |
2558 | * Device error during FBS+non-NCQ operation: | |
2559 | * | |
2560 | * We need to snapshot the shadow registers for each failed command. | |
2561 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3). | |
2562 | */ | |
2563 | return 0; /* not handled */ | |
2564 | } | |
2565 | ||
2566 | static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause) | |
2567 | { | |
2568 | struct mv_port_priv *pp = ap->private_data; | |
2569 | ||
2570 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) | |
2571 | return 0; /* EDMA was not active: not handled */ | |
2572 | if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN)) | |
2573 | return 0; /* FBS was not active: not handled */ | |
2574 | ||
2575 | if (!(edma_err_cause & EDMA_ERR_DEV)) | |
2576 | return 0; /* non DEV error: not handled */ | |
2577 | edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT; | |
2578 | if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS)) | |
2579 | return 0; /* other problems: not handled */ | |
2580 | ||
2581 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) { | |
2582 | /* | |
2583 | * EDMA should NOT have self-disabled for this case. | |
2584 | * If it did, then something is wrong elsewhere, | |
2585 | * and we cannot handle it here. | |
2586 | */ | |
2587 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { | |
2588 | ata_port_warn(ap, "%s: err_cause=0x%x pp_flags=0x%x\n", | |
2589 | __func__, edma_err_cause, pp->pp_flags); | |
2590 | return 0; /* not handled */ | |
2591 | } | |
2592 | return mv_handle_fbs_ncq_dev_err(ap); | |
2593 | } else { | |
2594 | /* | |
2595 | * EDMA should have self-disabled for this case. | |
2596 | * If it did not, then something is wrong elsewhere, | |
2597 | * and we cannot handle it here. | |
2598 | */ | |
2599 | if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) { | |
2600 | ata_port_warn(ap, "%s: err_cause=0x%x pp_flags=0x%x\n", | |
2601 | __func__, edma_err_cause, pp->pp_flags); | |
2602 | return 0; /* not handled */ | |
2603 | } | |
2604 | return mv_handle_fbs_non_ncq_dev_err(ap); | |
2605 | } | |
2606 | return 0; /* not handled */ | |
2607 | } | |
2608 | ||
2609 | static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled) | |
2610 | { | |
2611 | struct ata_eh_info *ehi = &ap->link.eh_info; | |
2612 | char *when = "idle"; | |
2613 | ||
2614 | ata_ehi_clear_desc(ehi); | |
2615 | if (edma_was_enabled) { | |
2616 | when = "EDMA enabled"; | |
2617 | } else { | |
2618 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag); | |
2619 | if (qc && (qc->tf.flags & ATA_TFLAG_POLLING)) | |
2620 | when = "polling"; | |
2621 | } | |
2622 | ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when); | |
2623 | ehi->err_mask |= AC_ERR_OTHER; | |
2624 | ehi->action |= ATA_EH_RESET; | |
2625 | ata_port_freeze(ap); | |
2626 | } | |
2627 | ||
2628 | /** | |
2629 | * mv_err_intr - Handle error interrupts on the port | |
2630 | * @ap: ATA channel to manipulate | |
2631 | * | |
2632 | * Most cases require a full reset of the chip's state machine, | |
2633 | * which also performs a COMRESET. | |
2634 | * Also, if the port disabled DMA, update our cached copy to match. | |
2635 | * | |
2636 | * LOCKING: | |
2637 | * Inherited from caller. | |
2638 | */ | |
2639 | static void mv_err_intr(struct ata_port *ap) | |
2640 | { | |
2641 | void __iomem *port_mmio = mv_ap_base(ap); | |
2642 | u32 edma_err_cause, eh_freeze_mask, serr = 0; | |
2643 | u32 fis_cause = 0; | |
2644 | struct mv_port_priv *pp = ap->private_data; | |
2645 | struct mv_host_priv *hpriv = ap->host->private_data; | |
2646 | unsigned int action = 0, err_mask = 0; | |
2647 | struct ata_eh_info *ehi = &ap->link.eh_info; | |
2648 | struct ata_queued_cmd *qc; | |
2649 | int abort = 0; | |
2650 | ||
2651 | /* | |
2652 | * Read and clear the SError and err_cause bits. | |
2653 | * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear | |
2654 | * the FIS_IRQ_CAUSE register before clearing edma_err_cause. | |
2655 | */ | |
2656 | sata_scr_read(&ap->link, SCR_ERROR, &serr); | |
2657 | sata_scr_write_flush(&ap->link, SCR_ERROR, serr); | |
2658 | ||
2659 | edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE); | |
2660 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { | |
2661 | fis_cause = readl(port_mmio + FIS_IRQ_CAUSE); | |
2662 | writelfl(~fis_cause, port_mmio + FIS_IRQ_CAUSE); | |
2663 | } | |
2664 | writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE); | |
2665 | ||
2666 | if (edma_err_cause & EDMA_ERR_DEV) { | |
2667 | /* | |
2668 | * Device errors during FIS-based switching operation | |
2669 | * require special handling. | |
2670 | */ | |
2671 | if (mv_handle_dev_err(ap, edma_err_cause)) | |
2672 | return; | |
2673 | } | |
2674 | ||
2675 | qc = mv_get_active_qc(ap); | |
2676 | ata_ehi_clear_desc(ehi); | |
2677 | ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x", | |
2678 | edma_err_cause, pp->pp_flags); | |
2679 | ||
2680 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { | |
2681 | ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause); | |
2682 | if (fis_cause & FIS_IRQ_CAUSE_AN) { | |
2683 | u32 ec = edma_err_cause & | |
2684 | ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT); | |
2685 | sata_async_notification(ap); | |
2686 | if (!ec) | |
2687 | return; /* Just an AN; no need for the nukes */ | |
2688 | ata_ehi_push_desc(ehi, "SDB notify"); | |
2689 | } | |
2690 | } | |
2691 | /* | |
2692 | * All generations share these EDMA error cause bits: | |
2693 | */ | |
2694 | if (edma_err_cause & EDMA_ERR_DEV) { | |
2695 | err_mask |= AC_ERR_DEV; | |
2696 | action |= ATA_EH_RESET; | |
2697 | ata_ehi_push_desc(ehi, "dev error"); | |
2698 | } | |
2699 | if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR | | |
2700 | EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR | | |
2701 | EDMA_ERR_INTRL_PAR)) { | |
2702 | err_mask |= AC_ERR_ATA_BUS; | |
2703 | action |= ATA_EH_RESET; | |
2704 | ata_ehi_push_desc(ehi, "parity error"); | |
2705 | } | |
2706 | if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) { | |
2707 | ata_ehi_hotplugged(ehi); | |
2708 | ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ? | |
2709 | "dev disconnect" : "dev connect"); | |
2710 | action |= ATA_EH_RESET; | |
2711 | } | |
2712 | ||
2713 | /* | |
2714 | * Gen-I has a different SELF_DIS bit, | |
2715 | * different FREEZE bits, and no SERR bit: | |
2716 | */ | |
2717 | if (IS_GEN_I(hpriv)) { | |
2718 | eh_freeze_mask = EDMA_EH_FREEZE_5; | |
2719 | if (edma_err_cause & EDMA_ERR_SELF_DIS_5) { | |
2720 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; | |
2721 | ata_ehi_push_desc(ehi, "EDMA self-disable"); | |
2722 | } | |
2723 | } else { | |
2724 | eh_freeze_mask = EDMA_EH_FREEZE; | |
2725 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { | |
2726 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; | |
2727 | ata_ehi_push_desc(ehi, "EDMA self-disable"); | |
2728 | } | |
2729 | if (edma_err_cause & EDMA_ERR_SERR) { | |
2730 | ata_ehi_push_desc(ehi, "SError=%08x", serr); | |
2731 | err_mask |= AC_ERR_ATA_BUS; | |
2732 | action |= ATA_EH_RESET; | |
2733 | } | |
2734 | } | |
2735 | ||
2736 | if (!err_mask) { | |
2737 | err_mask = AC_ERR_OTHER; | |
2738 | action |= ATA_EH_RESET; | |
2739 | } | |
2740 | ||
2741 | ehi->serror |= serr; | |
2742 | ehi->action |= action; | |
2743 | ||
2744 | if (qc) | |
2745 | qc->err_mask |= err_mask; | |
2746 | else | |
2747 | ehi->err_mask |= err_mask; | |
2748 | ||
2749 | if (err_mask == AC_ERR_DEV) { | |
2750 | /* | |
2751 | * Cannot do ata_port_freeze() here, | |
2752 | * because it would kill PIO access, | |
2753 | * which is needed for further diagnosis. | |
2754 | */ | |
2755 | mv_eh_freeze(ap); | |
2756 | abort = 1; | |
2757 | } else if (edma_err_cause & eh_freeze_mask) { | |
2758 | /* | |
2759 | * Note to self: ata_port_freeze() calls ata_port_abort() | |
2760 | */ | |
2761 | ata_port_freeze(ap); | |
2762 | } else { | |
2763 | abort = 1; | |
2764 | } | |
2765 | ||
2766 | if (abort) { | |
2767 | if (qc) | |
2768 | ata_link_abort(qc->dev->link); | |
2769 | else | |
2770 | ata_port_abort(ap); | |
2771 | } | |
2772 | } | |
2773 | ||
2774 | static bool mv_process_crpb_response(struct ata_port *ap, | |
2775 | struct mv_crpb *response, unsigned int tag, int ncq_enabled) | |
2776 | { | |
2777 | u8 ata_status; | |
2778 | u16 edma_status = le16_to_cpu(response->flags); | |
2779 | ||
2780 | /* | |
2781 | * edma_status from a response queue entry: | |
2782 | * LSB is from EDMA_ERR_IRQ_CAUSE (non-NCQ only). | |
2783 | * MSB is saved ATA status from command completion. | |
2784 | */ | |
2785 | if (!ncq_enabled) { | |
2786 | u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV; | |
2787 | if (err_cause) { | |
2788 | /* | |
2789 | * Error will be seen/handled by | |
2790 | * mv_err_intr(). So do nothing at all here. | |
2791 | */ | |
2792 | return false; | |
2793 | } | |
2794 | } | |
2795 | ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT; | |
2796 | if (!ac_err_mask(ata_status)) | |
2797 | return true; | |
2798 | /* else: leave it for mv_err_intr() */ | |
2799 | return false; | |
2800 | } | |
2801 | ||
2802 | static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp) | |
2803 | { | |
2804 | void __iomem *port_mmio = mv_ap_base(ap); | |
2805 | struct mv_host_priv *hpriv = ap->host->private_data; | |
2806 | u32 in_index; | |
2807 | bool work_done = false; | |
2808 | u32 done_mask = 0; | |
2809 | int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN); | |
2810 | ||
2811 | /* Get the hardware queue position index */ | |
2812 | in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR) | |
2813 | >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; | |
2814 | ||
2815 | /* Process new responses from since the last time we looked */ | |
2816 | while (in_index != pp->resp_idx) { | |
2817 | unsigned int tag; | |
2818 | struct mv_crpb *response = &pp->crpb[pp->resp_idx]; | |
2819 | ||
2820 | pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK; | |
2821 | ||
2822 | if (IS_GEN_I(hpriv)) { | |
2823 | /* 50xx: no NCQ, only one command active at a time */ | |
2824 | tag = ap->link.active_tag; | |
2825 | } else { | |
2826 | /* Gen II/IIE: get command tag from CRPB entry */ | |
2827 | tag = le16_to_cpu(response->id) & 0x1f; | |
2828 | } | |
2829 | if (mv_process_crpb_response(ap, response, tag, ncq_enabled)) | |
2830 | done_mask |= 1 << tag; | |
2831 | work_done = true; | |
2832 | } | |
2833 | ||
2834 | if (work_done) { | |
2835 | ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask); | |
2836 | ||
2837 | /* Update the software queue position index in hardware */ | |
2838 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | | |
2839 | (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT), | |
2840 | port_mmio + EDMA_RSP_Q_OUT_PTR); | |
2841 | } | |
2842 | } | |
2843 | ||
2844 | static void mv_port_intr(struct ata_port *ap, u32 port_cause) | |
2845 | { | |
2846 | struct mv_port_priv *pp; | |
2847 | int edma_was_enabled; | |
2848 | ||
2849 | /* | |
2850 | * Grab a snapshot of the EDMA_EN flag setting, | |
2851 | * so that we have a consistent view for this port, | |
2852 | * even if something we call of our routines changes it. | |
2853 | */ | |
2854 | pp = ap->private_data; | |
2855 | edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN); | |
2856 | /* | |
2857 | * Process completed CRPB response(s) before other events. | |
2858 | */ | |
2859 | if (edma_was_enabled && (port_cause & DONE_IRQ)) { | |
2860 | mv_process_crpb_entries(ap, pp); | |
2861 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) | |
2862 | mv_handle_fbs_ncq_dev_err(ap); | |
2863 | } | |
2864 | /* | |
2865 | * Handle chip-reported errors, or continue on to handle PIO. | |
2866 | */ | |
2867 | if (unlikely(port_cause & ERR_IRQ)) { | |
2868 | mv_err_intr(ap); | |
2869 | } else if (!edma_was_enabled) { | |
2870 | struct ata_queued_cmd *qc = mv_get_active_qc(ap); | |
2871 | if (qc) | |
2872 | ata_bmdma_port_intr(ap, qc); | |
2873 | else | |
2874 | mv_unexpected_intr(ap, edma_was_enabled); | |
2875 | } | |
2876 | } | |
2877 | ||
2878 | /** | |
2879 | * mv_host_intr - Handle all interrupts on the given host controller | |
2880 | * @host: host specific structure | |
2881 | * @main_irq_cause: Main interrupt cause register for the chip. | |
2882 | * | |
2883 | * LOCKING: | |
2884 | * Inherited from caller. | |
2885 | */ | |
2886 | static int mv_host_intr(struct ata_host *host, u32 main_irq_cause) | |
2887 | { | |
2888 | struct mv_host_priv *hpriv = host->private_data; | |
2889 | void __iomem *mmio = hpriv->base, *hc_mmio; | |
2890 | unsigned int handled = 0, port; | |
2891 | ||
2892 | /* If asserted, clear the "all ports" IRQ coalescing bit */ | |
2893 | if (main_irq_cause & ALL_PORTS_COAL_DONE) | |
2894 | writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE); | |
2895 | ||
2896 | for (port = 0; port < hpriv->n_ports; port++) { | |
2897 | struct ata_port *ap = host->ports[port]; | |
2898 | unsigned int p, shift, hardport, port_cause; | |
2899 | ||
2900 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); | |
2901 | /* | |
2902 | * Each hc within the host has its own hc_irq_cause register, | |
2903 | * where the interrupting ports bits get ack'd. | |
2904 | */ | |
2905 | if (hardport == 0) { /* first port on this hc ? */ | |
2906 | u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND; | |
2907 | u32 port_mask, ack_irqs; | |
2908 | /* | |
2909 | * Skip this entire hc if nothing pending for any ports | |
2910 | */ | |
2911 | if (!hc_cause) { | |
2912 | port += MV_PORTS_PER_HC - 1; | |
2913 | continue; | |
2914 | } | |
2915 | /* | |
2916 | * We don't need/want to read the hc_irq_cause register, | |
2917 | * because doing so hurts performance, and | |
2918 | * main_irq_cause already gives us everything we need. | |
2919 | * | |
2920 | * But we do have to *write* to the hc_irq_cause to ack | |
2921 | * the ports that we are handling this time through. | |
2922 | * | |
2923 | * This requires that we create a bitmap for those | |
2924 | * ports which interrupted us, and use that bitmap | |
2925 | * to ack (only) those ports via hc_irq_cause. | |
2926 | */ | |
2927 | ack_irqs = 0; | |
2928 | if (hc_cause & PORTS_0_3_COAL_DONE) | |
2929 | ack_irqs = HC_COAL_IRQ; | |
2930 | for (p = 0; p < MV_PORTS_PER_HC; ++p) { | |
2931 | if ((port + p) >= hpriv->n_ports) | |
2932 | break; | |
2933 | port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2); | |
2934 | if (hc_cause & port_mask) | |
2935 | ack_irqs |= (DMA_IRQ | DEV_IRQ) << p; | |
2936 | } | |
2937 | hc_mmio = mv_hc_base_from_port(mmio, port); | |
2938 | writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE); | |
2939 | handled = 1; | |
2940 | } | |
2941 | /* | |
2942 | * Handle interrupts signalled for this port: | |
2943 | */ | |
2944 | port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ); | |
2945 | if (port_cause) | |
2946 | mv_port_intr(ap, port_cause); | |
2947 | } | |
2948 | return handled; | |
2949 | } | |
2950 | ||
2951 | static int mv_pci_error(struct ata_host *host, void __iomem *mmio) | |
2952 | { | |
2953 | struct mv_host_priv *hpriv = host->private_data; | |
2954 | struct ata_port *ap; | |
2955 | struct ata_queued_cmd *qc; | |
2956 | struct ata_eh_info *ehi; | |
2957 | unsigned int i, err_mask, printed = 0; | |
2958 | u32 err_cause; | |
2959 | ||
2960 | err_cause = readl(mmio + hpriv->irq_cause_offset); | |
2961 | ||
2962 | dev_err(host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n", err_cause); | |
2963 | ||
2964 | DPRINTK("All regs @ PCI error\n"); | |
2965 | mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev)); | |
2966 | ||
2967 | writelfl(0, mmio + hpriv->irq_cause_offset); | |
2968 | ||
2969 | for (i = 0; i < host->n_ports; i++) { | |
2970 | ap = host->ports[i]; | |
2971 | if (!ata_link_offline(&ap->link)) { | |
2972 | ehi = &ap->link.eh_info; | |
2973 | ata_ehi_clear_desc(ehi); | |
2974 | if (!printed++) | |
2975 | ata_ehi_push_desc(ehi, | |
2976 | "PCI err cause 0x%08x", err_cause); | |
2977 | err_mask = AC_ERR_HOST_BUS; | |
2978 | ehi->action = ATA_EH_RESET; | |
2979 | qc = ata_qc_from_tag(ap, ap->link.active_tag); | |
2980 | if (qc) | |
2981 | qc->err_mask |= err_mask; | |
2982 | else | |
2983 | ehi->err_mask |= err_mask; | |
2984 | ||
2985 | ata_port_freeze(ap); | |
2986 | } | |
2987 | } | |
2988 | return 1; /* handled */ | |
2989 | } | |
2990 | ||
2991 | /** | |
2992 | * mv_interrupt - Main interrupt event handler | |
2993 | * @irq: unused | |
2994 | * @dev_instance: private data; in this case the host structure | |
2995 | * | |
2996 | * Read the read only register to determine if any host | |
2997 | * controllers have pending interrupts. If so, call lower level | |
2998 | * routine to handle. Also check for PCI errors which are only | |
2999 | * reported here. | |
3000 | * | |
3001 | * LOCKING: | |
3002 | * This routine holds the host lock while processing pending | |
3003 | * interrupts. | |
3004 | */ | |
3005 | static irqreturn_t mv_interrupt(int irq, void *dev_instance) | |
3006 | { | |
3007 | struct ata_host *host = dev_instance; | |
3008 | struct mv_host_priv *hpriv = host->private_data; | |
3009 | unsigned int handled = 0; | |
3010 | int using_msi = hpriv->hp_flags & MV_HP_FLAG_MSI; | |
3011 | u32 main_irq_cause, pending_irqs; | |
3012 | ||
3013 | spin_lock(&host->lock); | |
3014 | ||
3015 | /* for MSI: block new interrupts while in here */ | |
3016 | if (using_msi) | |
3017 | mv_write_main_irq_mask(0, hpriv); | |
3018 | ||
3019 | main_irq_cause = readl(hpriv->main_irq_cause_addr); | |
3020 | pending_irqs = main_irq_cause & hpriv->main_irq_mask; | |
3021 | /* | |
3022 | * Deal with cases where we either have nothing pending, or have read | |
3023 | * a bogus register value which can indicate HW removal or PCI fault. | |
3024 | */ | |
3025 | if (pending_irqs && main_irq_cause != 0xffffffffU) { | |
3026 | if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv))) | |
3027 | handled = mv_pci_error(host, hpriv->base); | |
3028 | else | |
3029 | handled = mv_host_intr(host, pending_irqs); | |
3030 | } | |
3031 | ||
3032 | /* for MSI: unmask; interrupt cause bits will retrigger now */ | |
3033 | if (using_msi) | |
3034 | mv_write_main_irq_mask(hpriv->main_irq_mask, hpriv); | |
3035 | ||
3036 | spin_unlock(&host->lock); | |
3037 | ||
3038 | return IRQ_RETVAL(handled); | |
3039 | } | |
3040 | ||
3041 | static unsigned int mv5_scr_offset(unsigned int sc_reg_in) | |
3042 | { | |
3043 | unsigned int ofs; | |
3044 | ||
3045 | switch (sc_reg_in) { | |
3046 | case SCR_STATUS: | |
3047 | case SCR_ERROR: | |
3048 | case SCR_CONTROL: | |
3049 | ofs = sc_reg_in * sizeof(u32); | |
3050 | break; | |
3051 | default: | |
3052 | ofs = 0xffffffffU; | |
3053 | break; | |
3054 | } | |
3055 | return ofs; | |
3056 | } | |
3057 | ||
3058 | static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val) | |
3059 | { | |
3060 | struct mv_host_priv *hpriv = link->ap->host->private_data; | |
3061 | void __iomem *mmio = hpriv->base; | |
3062 | void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no); | |
3063 | unsigned int ofs = mv5_scr_offset(sc_reg_in); | |
3064 | ||
3065 | if (ofs != 0xffffffffU) { | |
3066 | *val = readl(addr + ofs); | |
3067 | return 0; | |
3068 | } else | |
3069 | return -EINVAL; | |
3070 | } | |
3071 | ||
3072 | static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val) | |
3073 | { | |
3074 | struct mv_host_priv *hpriv = link->ap->host->private_data; | |
3075 | void __iomem *mmio = hpriv->base; | |
3076 | void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no); | |
3077 | unsigned int ofs = mv5_scr_offset(sc_reg_in); | |
3078 | ||
3079 | if (ofs != 0xffffffffU) { | |
3080 | writelfl(val, addr + ofs); | |
3081 | return 0; | |
3082 | } else | |
3083 | return -EINVAL; | |
3084 | } | |
3085 | ||
3086 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio) | |
3087 | { | |
3088 | struct pci_dev *pdev = to_pci_dev(host->dev); | |
3089 | int early_5080; | |
3090 | ||
3091 | early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0); | |
3092 | ||
3093 | if (!early_5080) { | |
3094 | u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
3095 | tmp |= (1 << 0); | |
3096 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
3097 | } | |
3098 | ||
3099 | mv_reset_pci_bus(host, mmio); | |
3100 | } | |
3101 | ||
3102 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) | |
3103 | { | |
3104 | writel(0x0fcfffff, mmio + FLASH_CTL); | |
3105 | } | |
3106 | ||
3107 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, | |
3108 | void __iomem *mmio) | |
3109 | { | |
3110 | void __iomem *phy_mmio = mv5_phy_base(mmio, idx); | |
3111 | u32 tmp; | |
3112 | ||
3113 | tmp = readl(phy_mmio + MV5_PHY_MODE); | |
3114 | ||
3115 | hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */ | |
3116 | hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */ | |
3117 | } | |
3118 | ||
3119 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) | |
3120 | { | |
3121 | u32 tmp; | |
3122 | ||
3123 | writel(0, mmio + GPIO_PORT_CTL); | |
3124 | ||
3125 | /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */ | |
3126 | ||
3127 | tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
3128 | tmp |= ~(1 << 0); | |
3129 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); | |
3130 | } | |
3131 | ||
3132 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3133 | unsigned int port) | |
3134 | { | |
3135 | void __iomem *phy_mmio = mv5_phy_base(mmio, port); | |
3136 | const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5); | |
3137 | u32 tmp; | |
3138 | int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0); | |
3139 | ||
3140 | if (fix_apm_sq) { | |
3141 | tmp = readl(phy_mmio + MV5_LTMODE); | |
3142 | tmp |= (1 << 19); | |
3143 | writel(tmp, phy_mmio + MV5_LTMODE); | |
3144 | ||
3145 | tmp = readl(phy_mmio + MV5_PHY_CTL); | |
3146 | tmp &= ~0x3; | |
3147 | tmp |= 0x1; | |
3148 | writel(tmp, phy_mmio + MV5_PHY_CTL); | |
3149 | } | |
3150 | ||
3151 | tmp = readl(phy_mmio + MV5_PHY_MODE); | |
3152 | tmp &= ~mask; | |
3153 | tmp |= hpriv->signal[port].pre; | |
3154 | tmp |= hpriv->signal[port].amps; | |
3155 | writel(tmp, phy_mmio + MV5_PHY_MODE); | |
3156 | } | |
3157 | ||
3158 | ||
3159 | #undef ZERO | |
3160 | #define ZERO(reg) writel(0, port_mmio + (reg)) | |
3161 | static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3162 | unsigned int port) | |
3163 | { | |
3164 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
3165 | ||
3166 | mv_reset_channel(hpriv, mmio, port); | |
3167 | ||
3168 | ZERO(0x028); /* command */ | |
3169 | writel(0x11f, port_mmio + EDMA_CFG); | |
3170 | ZERO(0x004); /* timer */ | |
3171 | ZERO(0x008); /* irq err cause */ | |
3172 | ZERO(0x00c); /* irq err mask */ | |
3173 | ZERO(0x010); /* rq bah */ | |
3174 | ZERO(0x014); /* rq inp */ | |
3175 | ZERO(0x018); /* rq outp */ | |
3176 | ZERO(0x01c); /* respq bah */ | |
3177 | ZERO(0x024); /* respq outp */ | |
3178 | ZERO(0x020); /* respq inp */ | |
3179 | ZERO(0x02c); /* test control */ | |
3180 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT); | |
3181 | } | |
3182 | #undef ZERO | |
3183 | ||
3184 | #define ZERO(reg) writel(0, hc_mmio + (reg)) | |
3185 | static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3186 | unsigned int hc) | |
3187 | { | |
3188 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); | |
3189 | u32 tmp; | |
3190 | ||
3191 | ZERO(0x00c); | |
3192 | ZERO(0x010); | |
3193 | ZERO(0x014); | |
3194 | ZERO(0x018); | |
3195 | ||
3196 | tmp = readl(hc_mmio + 0x20); | |
3197 | tmp &= 0x1c1c1c1c; | |
3198 | tmp |= 0x03030303; | |
3199 | writel(tmp, hc_mmio + 0x20); | |
3200 | } | |
3201 | #undef ZERO | |
3202 | ||
3203 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3204 | unsigned int n_hc) | |
3205 | { | |
3206 | unsigned int hc, port; | |
3207 | ||
3208 | for (hc = 0; hc < n_hc; hc++) { | |
3209 | for (port = 0; port < MV_PORTS_PER_HC; port++) | |
3210 | mv5_reset_hc_port(hpriv, mmio, | |
3211 | (hc * MV_PORTS_PER_HC) + port); | |
3212 | ||
3213 | mv5_reset_one_hc(hpriv, mmio, hc); | |
3214 | } | |
3215 | ||
3216 | return 0; | |
3217 | } | |
3218 | ||
3219 | #undef ZERO | |
3220 | #define ZERO(reg) writel(0, mmio + (reg)) | |
3221 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio) | |
3222 | { | |
3223 | struct mv_host_priv *hpriv = host->private_data; | |
3224 | u32 tmp; | |
3225 | ||
3226 | tmp = readl(mmio + MV_PCI_MODE); | |
3227 | tmp &= 0xff00ffff; | |
3228 | writel(tmp, mmio + MV_PCI_MODE); | |
3229 | ||
3230 | ZERO(MV_PCI_DISC_TIMER); | |
3231 | ZERO(MV_PCI_MSI_TRIGGER); | |
3232 | writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT); | |
3233 | ZERO(MV_PCI_SERR_MASK); | |
3234 | ZERO(hpriv->irq_cause_offset); | |
3235 | ZERO(hpriv->irq_mask_offset); | |
3236 | ZERO(MV_PCI_ERR_LOW_ADDRESS); | |
3237 | ZERO(MV_PCI_ERR_HIGH_ADDRESS); | |
3238 | ZERO(MV_PCI_ERR_ATTRIBUTE); | |
3239 | ZERO(MV_PCI_ERR_COMMAND); | |
3240 | } | |
3241 | #undef ZERO | |
3242 | ||
3243 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) | |
3244 | { | |
3245 | u32 tmp; | |
3246 | ||
3247 | mv5_reset_flash(hpriv, mmio); | |
3248 | ||
3249 | tmp = readl(mmio + GPIO_PORT_CTL); | |
3250 | tmp &= 0x3; | |
3251 | tmp |= (1 << 5) | (1 << 6); | |
3252 | writel(tmp, mmio + GPIO_PORT_CTL); | |
3253 | } | |
3254 | ||
3255 | /** | |
3256 | * mv6_reset_hc - Perform the 6xxx global soft reset | |
3257 | * @mmio: base address of the HBA | |
3258 | * | |
3259 | * This routine only applies to 6xxx parts. | |
3260 | * | |
3261 | * LOCKING: | |
3262 | * Inherited from caller. | |
3263 | */ | |
3264 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3265 | unsigned int n_hc) | |
3266 | { | |
3267 | void __iomem *reg = mmio + PCI_MAIN_CMD_STS; | |
3268 | int i, rc = 0; | |
3269 | u32 t; | |
3270 | ||
3271 | /* Following procedure defined in PCI "main command and status | |
3272 | * register" table. | |
3273 | */ | |
3274 | t = readl(reg); | |
3275 | writel(t | STOP_PCI_MASTER, reg); | |
3276 | ||
3277 | for (i = 0; i < 1000; i++) { | |
3278 | udelay(1); | |
3279 | t = readl(reg); | |
3280 | if (PCI_MASTER_EMPTY & t) | |
3281 | break; | |
3282 | } | |
3283 | if (!(PCI_MASTER_EMPTY & t)) { | |
3284 | printk(KERN_ERR DRV_NAME ": PCI master won't flush\n"); | |
3285 | rc = 1; | |
3286 | goto done; | |
3287 | } | |
3288 | ||
3289 | /* set reset */ | |
3290 | i = 5; | |
3291 | do { | |
3292 | writel(t | GLOB_SFT_RST, reg); | |
3293 | t = readl(reg); | |
3294 | udelay(1); | |
3295 | } while (!(GLOB_SFT_RST & t) && (i-- > 0)); | |
3296 | ||
3297 | if (!(GLOB_SFT_RST & t)) { | |
3298 | printk(KERN_ERR DRV_NAME ": can't set global reset\n"); | |
3299 | rc = 1; | |
3300 | goto done; | |
3301 | } | |
3302 | ||
3303 | /* clear reset and *reenable the PCI master* (not mentioned in spec) */ | |
3304 | i = 5; | |
3305 | do { | |
3306 | writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg); | |
3307 | t = readl(reg); | |
3308 | udelay(1); | |
3309 | } while ((GLOB_SFT_RST & t) && (i-- > 0)); | |
3310 | ||
3311 | if (GLOB_SFT_RST & t) { | |
3312 | printk(KERN_ERR DRV_NAME ": can't clear global reset\n"); | |
3313 | rc = 1; | |
3314 | } | |
3315 | done: | |
3316 | return rc; | |
3317 | } | |
3318 | ||
3319 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, | |
3320 | void __iomem *mmio) | |
3321 | { | |
3322 | void __iomem *port_mmio; | |
3323 | u32 tmp; | |
3324 | ||
3325 | tmp = readl(mmio + RESET_CFG); | |
3326 | if ((tmp & (1 << 0)) == 0) { | |
3327 | hpriv->signal[idx].amps = 0x7 << 8; | |
3328 | hpriv->signal[idx].pre = 0x1 << 5; | |
3329 | return; | |
3330 | } | |
3331 | ||
3332 | port_mmio = mv_port_base(mmio, idx); | |
3333 | tmp = readl(port_mmio + PHY_MODE2); | |
3334 | ||
3335 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ | |
3336 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ | |
3337 | } | |
3338 | ||
3339 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) | |
3340 | { | |
3341 | writel(0x00000060, mmio + GPIO_PORT_CTL); | |
3342 | } | |
3343 | ||
3344 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3345 | unsigned int port) | |
3346 | { | |
3347 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
3348 | ||
3349 | u32 hp_flags = hpriv->hp_flags; | |
3350 | int fix_phy_mode2 = | |
3351 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); | |
3352 | int fix_phy_mode4 = | |
3353 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); | |
3354 | u32 m2, m3; | |
3355 | ||
3356 | if (fix_phy_mode2) { | |
3357 | m2 = readl(port_mmio + PHY_MODE2); | |
3358 | m2 &= ~(1 << 16); | |
3359 | m2 |= (1 << 31); | |
3360 | writel(m2, port_mmio + PHY_MODE2); | |
3361 | ||
3362 | udelay(200); | |
3363 | ||
3364 | m2 = readl(port_mmio + PHY_MODE2); | |
3365 | m2 &= ~((1 << 16) | (1 << 31)); | |
3366 | writel(m2, port_mmio + PHY_MODE2); | |
3367 | ||
3368 | udelay(200); | |
3369 | } | |
3370 | ||
3371 | /* | |
3372 | * Gen-II/IIe PHY_MODE3 errata RM#2: | |
3373 | * Achieves better receiver noise performance than the h/w default: | |
3374 | */ | |
3375 | m3 = readl(port_mmio + PHY_MODE3); | |
3376 | m3 = (m3 & 0x1f) | (0x5555601 << 5); | |
3377 | ||
3378 | /* Guideline 88F5182 (GL# SATA-S11) */ | |
3379 | if (IS_SOC(hpriv)) | |
3380 | m3 &= ~0x1c; | |
3381 | ||
3382 | if (fix_phy_mode4) { | |
3383 | u32 m4 = readl(port_mmio + PHY_MODE4); | |
3384 | /* | |
3385 | * Enforce reserved-bit restrictions on GenIIe devices only. | |
3386 | * For earlier chipsets, force only the internal config field | |
3387 | * (workaround for errata FEr SATA#10 part 1). | |
3388 | */ | |
3389 | if (IS_GEN_IIE(hpriv)) | |
3390 | m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES; | |
3391 | else | |
3392 | m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE; | |
3393 | writel(m4, port_mmio + PHY_MODE4); | |
3394 | } | |
3395 | /* | |
3396 | * Workaround for 60x1-B2 errata SATA#13: | |
3397 | * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3, | |
3398 | * so we must always rewrite PHY_MODE3 after PHY_MODE4. | |
3399 | * Or ensure we use writelfl() when writing PHY_MODE4. | |
3400 | */ | |
3401 | writel(m3, port_mmio + PHY_MODE3); | |
3402 | ||
3403 | /* Revert values of pre-emphasis and signal amps to the saved ones */ | |
3404 | m2 = readl(port_mmio + PHY_MODE2); | |
3405 | ||
3406 | m2 &= ~MV_M2_PREAMP_MASK; | |
3407 | m2 |= hpriv->signal[port].amps; | |
3408 | m2 |= hpriv->signal[port].pre; | |
3409 | m2 &= ~(1 << 16); | |
3410 | ||
3411 | /* according to mvSata 3.6.1, some IIE values are fixed */ | |
3412 | if (IS_GEN_IIE(hpriv)) { | |
3413 | m2 &= ~0xC30FF01F; | |
3414 | m2 |= 0x0000900F; | |
3415 | } | |
3416 | ||
3417 | writel(m2, port_mmio + PHY_MODE2); | |
3418 | } | |
3419 | ||
3420 | /* TODO: use the generic LED interface to configure the SATA Presence */ | |
3421 | /* & Acitivy LEDs on the board */ | |
3422 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, | |
3423 | void __iomem *mmio) | |
3424 | { | |
3425 | return; | |
3426 | } | |
3427 | ||
3428 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, | |
3429 | void __iomem *mmio) | |
3430 | { | |
3431 | void __iomem *port_mmio; | |
3432 | u32 tmp; | |
3433 | ||
3434 | port_mmio = mv_port_base(mmio, idx); | |
3435 | tmp = readl(port_mmio + PHY_MODE2); | |
3436 | ||
3437 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ | |
3438 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ | |
3439 | } | |
3440 | ||
3441 | #undef ZERO | |
3442 | #define ZERO(reg) writel(0, port_mmio + (reg)) | |
3443 | static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv, | |
3444 | void __iomem *mmio, unsigned int port) | |
3445 | { | |
3446 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
3447 | ||
3448 | mv_reset_channel(hpriv, mmio, port); | |
3449 | ||
3450 | ZERO(0x028); /* command */ | |
3451 | writel(0x101f, port_mmio + EDMA_CFG); | |
3452 | ZERO(0x004); /* timer */ | |
3453 | ZERO(0x008); /* irq err cause */ | |
3454 | ZERO(0x00c); /* irq err mask */ | |
3455 | ZERO(0x010); /* rq bah */ | |
3456 | ZERO(0x014); /* rq inp */ | |
3457 | ZERO(0x018); /* rq outp */ | |
3458 | ZERO(0x01c); /* respq bah */ | |
3459 | ZERO(0x024); /* respq outp */ | |
3460 | ZERO(0x020); /* respq inp */ | |
3461 | ZERO(0x02c); /* test control */ | |
3462 | writel(0x800, port_mmio + EDMA_IORDY_TMOUT); | |
3463 | } | |
3464 | ||
3465 | #undef ZERO | |
3466 | ||
3467 | #define ZERO(reg) writel(0, hc_mmio + (reg)) | |
3468 | static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv, | |
3469 | void __iomem *mmio) | |
3470 | { | |
3471 | void __iomem *hc_mmio = mv_hc_base(mmio, 0); | |
3472 | ||
3473 | ZERO(0x00c); | |
3474 | ZERO(0x010); | |
3475 | ZERO(0x014); | |
3476 | ||
3477 | } | |
3478 | ||
3479 | #undef ZERO | |
3480 | ||
3481 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, | |
3482 | void __iomem *mmio, unsigned int n_hc) | |
3483 | { | |
3484 | unsigned int port; | |
3485 | ||
3486 | for (port = 0; port < hpriv->n_ports; port++) | |
3487 | mv_soc_reset_hc_port(hpriv, mmio, port); | |
3488 | ||
3489 | mv_soc_reset_one_hc(hpriv, mmio); | |
3490 | ||
3491 | return 0; | |
3492 | } | |
3493 | ||
3494 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, | |
3495 | void __iomem *mmio) | |
3496 | { | |
3497 | return; | |
3498 | } | |
3499 | ||
3500 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio) | |
3501 | { | |
3502 | return; | |
3503 | } | |
3504 | ||
3505 | static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv, | |
3506 | void __iomem *mmio, unsigned int port) | |
3507 | { | |
3508 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
3509 | u32 reg; | |
3510 | ||
3511 | reg = readl(port_mmio + PHY_MODE3); | |
3512 | reg &= ~(0x3 << 27); /* SELMUPF (bits 28:27) to 1 */ | |
3513 | reg |= (0x1 << 27); | |
3514 | reg &= ~(0x3 << 29); /* SELMUPI (bits 30:29) to 1 */ | |
3515 | reg |= (0x1 << 29); | |
3516 | writel(reg, port_mmio + PHY_MODE3); | |
3517 | ||
3518 | reg = readl(port_mmio + PHY_MODE4); | |
3519 | reg &= ~0x1; /* SATU_OD8 (bit 0) to 0, reserved bit 16 must be set */ | |
3520 | reg |= (0x1 << 16); | |
3521 | writel(reg, port_mmio + PHY_MODE4); | |
3522 | ||
3523 | reg = readl(port_mmio + PHY_MODE9_GEN2); | |
3524 | reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */ | |
3525 | reg |= 0x8; | |
3526 | reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */ | |
3527 | writel(reg, port_mmio + PHY_MODE9_GEN2); | |
3528 | ||
3529 | reg = readl(port_mmio + PHY_MODE9_GEN1); | |
3530 | reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */ | |
3531 | reg |= 0x8; | |
3532 | reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */ | |
3533 | writel(reg, port_mmio + PHY_MODE9_GEN1); | |
3534 | } | |
3535 | ||
3536 | /** | |
3537 | * soc_is_65 - check if the soc is 65 nano device | |
3538 | * | |
3539 | * Detect the type of the SoC, this is done by reading the PHYCFG_OFS | |
3540 | * register, this register should contain non-zero value and it exists only | |
3541 | * in the 65 nano devices, when reading it from older devices we get 0. | |
3542 | */ | |
3543 | static bool soc_is_65n(struct mv_host_priv *hpriv) | |
3544 | { | |
3545 | void __iomem *port0_mmio = mv_port_base(hpriv->base, 0); | |
3546 | ||
3547 | if (readl(port0_mmio + PHYCFG_OFS)) | |
3548 | return true; | |
3549 | return false; | |
3550 | } | |
3551 | ||
3552 | static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i) | |
3553 | { | |
3554 | u32 ifcfg = readl(port_mmio + SATA_IFCFG); | |
3555 | ||
3556 | ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */ | |
3557 | if (want_gen2i) | |
3558 | ifcfg |= (1 << 7); /* enable gen2i speed */ | |
3559 | writelfl(ifcfg, port_mmio + SATA_IFCFG); | |
3560 | } | |
3561 | ||
3562 | static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, | |
3563 | unsigned int port_no) | |
3564 | { | |
3565 | void __iomem *port_mmio = mv_port_base(mmio, port_no); | |
3566 | ||
3567 | /* | |
3568 | * The datasheet warns against setting EDMA_RESET when EDMA is active | |
3569 | * (but doesn't say what the problem might be). So we first try | |
3570 | * to disable the EDMA engine before doing the EDMA_RESET operation. | |
3571 | */ | |
3572 | mv_stop_edma_engine(port_mmio); | |
3573 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD); | |
3574 | ||
3575 | if (!IS_GEN_I(hpriv)) { | |
3576 | /* Enable 3.0gb/s link speed: this survives EDMA_RESET */ | |
3577 | mv_setup_ifcfg(port_mmio, 1); | |
3578 | } | |
3579 | /* | |
3580 | * Strobing EDMA_RESET here causes a hard reset of the SATA transport, | |
3581 | * link, and physical layers. It resets all SATA interface registers | |
3582 | * (except for SATA_IFCFG), and issues a COMRESET to the dev. | |
3583 | */ | |
3584 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD); | |
3585 | udelay(25); /* allow reset propagation */ | |
3586 | writelfl(0, port_mmio + EDMA_CMD); | |
3587 | ||
3588 | hpriv->ops->phy_errata(hpriv, mmio, port_no); | |
3589 | ||
3590 | if (IS_GEN_I(hpriv)) | |
3591 | mdelay(1); | |
3592 | } | |
3593 | ||
3594 | static void mv_pmp_select(struct ata_port *ap, int pmp) | |
3595 | { | |
3596 | if (sata_pmp_supported(ap)) { | |
3597 | void __iomem *port_mmio = mv_ap_base(ap); | |
3598 | u32 reg = readl(port_mmio + SATA_IFCTL); | |
3599 | int old = reg & 0xf; | |
3600 | ||
3601 | if (old != pmp) { | |
3602 | reg = (reg & ~0xf) | pmp; | |
3603 | writelfl(reg, port_mmio + SATA_IFCTL); | |
3604 | } | |
3605 | } | |
3606 | } | |
3607 | ||
3608 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, | |
3609 | unsigned long deadline) | |
3610 | { | |
3611 | mv_pmp_select(link->ap, sata_srst_pmp(link)); | |
3612 | return sata_std_hardreset(link, class, deadline); | |
3613 | } | |
3614 | ||
3615 | static int mv_softreset(struct ata_link *link, unsigned int *class, | |
3616 | unsigned long deadline) | |
3617 | { | |
3618 | mv_pmp_select(link->ap, sata_srst_pmp(link)); | |
3619 | return ata_sff_softreset(link, class, deadline); | |
3620 | } | |
3621 | ||
3622 | static int mv_hardreset(struct ata_link *link, unsigned int *class, | |
3623 | unsigned long deadline) | |
3624 | { | |
3625 | struct ata_port *ap = link->ap; | |
3626 | struct mv_host_priv *hpriv = ap->host->private_data; | |
3627 | struct mv_port_priv *pp = ap->private_data; | |
3628 | void __iomem *mmio = hpriv->base; | |
3629 | int rc, attempts = 0, extra = 0; | |
3630 | u32 sstatus; | |
3631 | bool online; | |
3632 | ||
3633 | mv_reset_channel(hpriv, mmio, ap->port_no); | |
3634 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; | |
3635 | pp->pp_flags &= | |
3636 | ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY); | |
3637 | ||
3638 | /* Workaround for errata FEr SATA#10 (part 2) */ | |
3639 | do { | |
3640 | const unsigned long *timing = | |
3641 | sata_ehc_deb_timing(&link->eh_context); | |
3642 | ||
3643 | rc = sata_link_hardreset(link, timing, deadline + extra, | |
3644 | &online, NULL); | |
3645 | rc = online ? -EAGAIN : rc; | |
3646 | if (rc) | |
3647 | return rc; | |
3648 | sata_scr_read(link, SCR_STATUS, &sstatus); | |
3649 | if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) { | |
3650 | /* Force 1.5gb/s link speed and try again */ | |
3651 | mv_setup_ifcfg(mv_ap_base(ap), 0); | |
3652 | if (time_after(jiffies + HZ, deadline)) | |
3653 | extra = HZ; /* only extend it once, max */ | |
3654 | } | |
3655 | } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123); | |
3656 | mv_save_cached_regs(ap); | |
3657 | mv_edma_cfg(ap, 0, 0); | |
3658 | ||
3659 | return rc; | |
3660 | } | |
3661 | ||
3662 | static void mv_eh_freeze(struct ata_port *ap) | |
3663 | { | |
3664 | mv_stop_edma(ap); | |
3665 | mv_enable_port_irqs(ap, 0); | |
3666 | } | |
3667 | ||
3668 | static void mv_eh_thaw(struct ata_port *ap) | |
3669 | { | |
3670 | struct mv_host_priv *hpriv = ap->host->private_data; | |
3671 | unsigned int port = ap->port_no; | |
3672 | unsigned int hardport = mv_hardport_from_port(port); | |
3673 | void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port); | |
3674 | void __iomem *port_mmio = mv_ap_base(ap); | |
3675 | u32 hc_irq_cause; | |
3676 | ||
3677 | /* clear EDMA errors on this port */ | |
3678 | writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE); | |
3679 | ||
3680 | /* clear pending irq events */ | |
3681 | hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport); | |
3682 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE); | |
3683 | ||
3684 | mv_enable_port_irqs(ap, ERR_IRQ); | |
3685 | } | |
3686 | ||
3687 | /** | |
3688 | * mv_port_init - Perform some early initialization on a single port. | |
3689 | * @port: libata data structure storing shadow register addresses | |
3690 | * @port_mmio: base address of the port | |
3691 | * | |
3692 | * Initialize shadow register mmio addresses, clear outstanding | |
3693 | * interrupts on the port, and unmask interrupts for the future | |
3694 | * start of the port. | |
3695 | * | |
3696 | * LOCKING: | |
3697 | * Inherited from caller. | |
3698 | */ | |
3699 | static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio) | |
3700 | { | |
3701 | void __iomem *serr, *shd_base = port_mmio + SHD_BLK; | |
3702 | ||
3703 | /* PIO related setup | |
3704 | */ | |
3705 | port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA); | |
3706 | port->error_addr = | |
3707 | port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR); | |
3708 | port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT); | |
3709 | port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL); | |
3710 | port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM); | |
3711 | port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH); | |
3712 | port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE); | |
3713 | port->status_addr = | |
3714 | port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS); | |
3715 | /* special case: control/altstatus doesn't have ATA_REG_ address */ | |
3716 | port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST; | |
3717 | ||
3718 | /* Clear any currently outstanding port interrupt conditions */ | |
3719 | serr = port_mmio + mv_scr_offset(SCR_ERROR); | |
3720 | writelfl(readl(serr), serr); | |
3721 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE); | |
3722 | ||
3723 | /* unmask all non-transient EDMA error interrupts */ | |
3724 | writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK); | |
3725 | ||
3726 | VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n", | |
3727 | readl(port_mmio + EDMA_CFG), | |
3728 | readl(port_mmio + EDMA_ERR_IRQ_CAUSE), | |
3729 | readl(port_mmio + EDMA_ERR_IRQ_MASK)); | |
3730 | } | |
3731 | ||
3732 | static unsigned int mv_in_pcix_mode(struct ata_host *host) | |
3733 | { | |
3734 | struct mv_host_priv *hpriv = host->private_data; | |
3735 | void __iomem *mmio = hpriv->base; | |
3736 | u32 reg; | |
3737 | ||
3738 | if (IS_SOC(hpriv) || !IS_PCIE(hpriv)) | |
3739 | return 0; /* not PCI-X capable */ | |
3740 | reg = readl(mmio + MV_PCI_MODE); | |
3741 | if ((reg & MV_PCI_MODE_MASK) == 0) | |
3742 | return 0; /* conventional PCI mode */ | |
3743 | return 1; /* chip is in PCI-X mode */ | |
3744 | } | |
3745 | ||
3746 | static int mv_pci_cut_through_okay(struct ata_host *host) | |
3747 | { | |
3748 | struct mv_host_priv *hpriv = host->private_data; | |
3749 | void __iomem *mmio = hpriv->base; | |
3750 | u32 reg; | |
3751 | ||
3752 | if (!mv_in_pcix_mode(host)) { | |
3753 | reg = readl(mmio + MV_PCI_COMMAND); | |
3754 | if (reg & MV_PCI_COMMAND_MRDTRIG) | |
3755 | return 0; /* not okay */ | |
3756 | } | |
3757 | return 1; /* okay */ | |
3758 | } | |
3759 | ||
3760 | static void mv_60x1b2_errata_pci7(struct ata_host *host) | |
3761 | { | |
3762 | struct mv_host_priv *hpriv = host->private_data; | |
3763 | void __iomem *mmio = hpriv->base; | |
3764 | ||
3765 | /* workaround for 60x1-B2 errata PCI#7 */ | |
3766 | if (mv_in_pcix_mode(host)) { | |
3767 | u32 reg = readl(mmio + MV_PCI_COMMAND); | |
3768 | writelfl(reg & ~MV_PCI_COMMAND_MWRCOM, mmio + MV_PCI_COMMAND); | |
3769 | } | |
3770 | } | |
3771 | ||
3772 | static int mv_chip_id(struct ata_host *host, unsigned int board_idx) | |
3773 | { | |
3774 | struct pci_dev *pdev = to_pci_dev(host->dev); | |
3775 | struct mv_host_priv *hpriv = host->private_data; | |
3776 | u32 hp_flags = hpriv->hp_flags; | |
3777 | ||
3778 | switch (board_idx) { | |
3779 | case chip_5080: | |
3780 | hpriv->ops = &mv5xxx_ops; | |
3781 | hp_flags |= MV_HP_GEN_I; | |
3782 | ||
3783 | switch (pdev->revision) { | |
3784 | case 0x1: | |
3785 | hp_flags |= MV_HP_ERRATA_50XXB0; | |
3786 | break; | |
3787 | case 0x3: | |
3788 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
3789 | break; | |
3790 | default: | |
3791 | dev_warn(&pdev->dev, | |
3792 | "Applying 50XXB2 workarounds to unknown rev\n"); | |
3793 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
3794 | break; | |
3795 | } | |
3796 | break; | |
3797 | ||
3798 | case chip_504x: | |
3799 | case chip_508x: | |
3800 | hpriv->ops = &mv5xxx_ops; | |
3801 | hp_flags |= MV_HP_GEN_I; | |
3802 | ||
3803 | switch (pdev->revision) { | |
3804 | case 0x0: | |
3805 | hp_flags |= MV_HP_ERRATA_50XXB0; | |
3806 | break; | |
3807 | case 0x3: | |
3808 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
3809 | break; | |
3810 | default: | |
3811 | dev_warn(&pdev->dev, | |
3812 | "Applying B2 workarounds to unknown rev\n"); | |
3813 | hp_flags |= MV_HP_ERRATA_50XXB2; | |
3814 | break; | |
3815 | } | |
3816 | break; | |
3817 | ||
3818 | case chip_604x: | |
3819 | case chip_608x: | |
3820 | hpriv->ops = &mv6xxx_ops; | |
3821 | hp_flags |= MV_HP_GEN_II; | |
3822 | ||
3823 | switch (pdev->revision) { | |
3824 | case 0x7: | |
3825 | mv_60x1b2_errata_pci7(host); | |
3826 | hp_flags |= MV_HP_ERRATA_60X1B2; | |
3827 | break; | |
3828 | case 0x9: | |
3829 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
3830 | break; | |
3831 | default: | |
3832 | dev_warn(&pdev->dev, | |
3833 | "Applying B2 workarounds to unknown rev\n"); | |
3834 | hp_flags |= MV_HP_ERRATA_60X1B2; | |
3835 | break; | |
3836 | } | |
3837 | break; | |
3838 | ||
3839 | case chip_7042: | |
3840 | hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH; | |
3841 | if (pdev->vendor == PCI_VENDOR_ID_TTI && | |
3842 | (pdev->device == 0x2300 || pdev->device == 0x2310)) | |
3843 | { | |
3844 | /* | |
3845 | * Highpoint RocketRAID PCIe 23xx series cards: | |
3846 | * | |
3847 | * Unconfigured drives are treated as "Legacy" | |
3848 | * by the BIOS, and it overwrites sector 8 with | |
3849 | * a "Lgcy" metadata block prior to Linux boot. | |
3850 | * | |
3851 | * Configured drives (RAID or JBOD) leave sector 8 | |
3852 | * alone, but instead overwrite a high numbered | |
3853 | * sector for the RAID metadata. This sector can | |
3854 | * be determined exactly, by truncating the physical | |
3855 | * drive capacity to a nice even GB value. | |
3856 | * | |
3857 | * RAID metadata is at: (dev->n_sectors & ~0xfffff) | |
3858 | * | |
3859 | * Warn the user, lest they think we're just buggy. | |
3860 | */ | |
3861 | printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID" | |
3862 | " BIOS CORRUPTS DATA on all attached drives," | |
3863 | " regardless of if/how they are configured." | |
3864 | " BEWARE!\n"); | |
3865 | printk(KERN_WARNING DRV_NAME ": For data safety, do not" | |
3866 | " use sectors 8-9 on \"Legacy\" drives," | |
3867 | " and avoid the final two gigabytes on" | |
3868 | " all RocketRAID BIOS initialized drives.\n"); | |
3869 | } | |
3870 | /* drop through */ | |
3871 | case chip_6042: | |
3872 | hpriv->ops = &mv6xxx_ops; | |
3873 | hp_flags |= MV_HP_GEN_IIE; | |
3874 | if (board_idx == chip_6042 && mv_pci_cut_through_okay(host)) | |
3875 | hp_flags |= MV_HP_CUT_THROUGH; | |
3876 | ||
3877 | switch (pdev->revision) { | |
3878 | case 0x2: /* Rev.B0: the first/only public release */ | |
3879 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
3880 | break; | |
3881 | default: | |
3882 | dev_warn(&pdev->dev, | |
3883 | "Applying 60X1C0 workarounds to unknown rev\n"); | |
3884 | hp_flags |= MV_HP_ERRATA_60X1C0; | |
3885 | break; | |
3886 | } | |
3887 | break; | |
3888 | case chip_soc: | |
3889 | if (soc_is_65n(hpriv)) | |
3890 | hpriv->ops = &mv_soc_65n_ops; | |
3891 | else | |
3892 | hpriv->ops = &mv_soc_ops; | |
3893 | hp_flags |= MV_HP_FLAG_SOC | MV_HP_GEN_IIE | | |
3894 | MV_HP_ERRATA_60X1C0; | |
3895 | break; | |
3896 | ||
3897 | default: | |
3898 | dev_err(host->dev, "BUG: invalid board index %u\n", board_idx); | |
3899 | return 1; | |
3900 | } | |
3901 | ||
3902 | hpriv->hp_flags = hp_flags; | |
3903 | if (hp_flags & MV_HP_PCIE) { | |
3904 | hpriv->irq_cause_offset = PCIE_IRQ_CAUSE; | |
3905 | hpriv->irq_mask_offset = PCIE_IRQ_MASK; | |
3906 | hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS; | |
3907 | } else { | |
3908 | hpriv->irq_cause_offset = PCI_IRQ_CAUSE; | |
3909 | hpriv->irq_mask_offset = PCI_IRQ_MASK; | |
3910 | hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS; | |
3911 | } | |
3912 | ||
3913 | return 0; | |
3914 | } | |
3915 | ||
3916 | /** | |
3917 | * mv_init_host - Perform some early initialization of the host. | |
3918 | * @host: ATA host to initialize | |
3919 | * | |
3920 | * If possible, do an early global reset of the host. Then do | |
3921 | * our port init and clear/unmask all/relevant host interrupts. | |
3922 | * | |
3923 | * LOCKING: | |
3924 | * Inherited from caller. | |
3925 | */ | |
3926 | static int mv_init_host(struct ata_host *host) | |
3927 | { | |
3928 | int rc = 0, n_hc, port, hc; | |
3929 | struct mv_host_priv *hpriv = host->private_data; | |
3930 | void __iomem *mmio = hpriv->base; | |
3931 | ||
3932 | rc = mv_chip_id(host, hpriv->board_idx); | |
3933 | if (rc) | |
3934 | goto done; | |
3935 | ||
3936 | if (IS_SOC(hpriv)) { | |
3937 | hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE; | |
3938 | hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK; | |
3939 | } else { | |
3940 | hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE; | |
3941 | hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK; | |
3942 | } | |
3943 | ||
3944 | /* initialize shadow irq mask with register's value */ | |
3945 | hpriv->main_irq_mask = readl(hpriv->main_irq_mask_addr); | |
3946 | ||
3947 | /* global interrupt mask: 0 == mask everything */ | |
3948 | mv_set_main_irq_mask(host, ~0, 0); | |
3949 | ||
3950 | n_hc = mv_get_hc_count(host->ports[0]->flags); | |
3951 | ||
3952 | for (port = 0; port < host->n_ports; port++) | |
3953 | if (hpriv->ops->read_preamp) | |
3954 | hpriv->ops->read_preamp(hpriv, port, mmio); | |
3955 | ||
3956 | rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc); | |
3957 | if (rc) | |
3958 | goto done; | |
3959 | ||
3960 | hpriv->ops->reset_flash(hpriv, mmio); | |
3961 | hpriv->ops->reset_bus(host, mmio); | |
3962 | hpriv->ops->enable_leds(hpriv, mmio); | |
3963 | ||
3964 | for (port = 0; port < host->n_ports; port++) { | |
3965 | struct ata_port *ap = host->ports[port]; | |
3966 | void __iomem *port_mmio = mv_port_base(mmio, port); | |
3967 | ||
3968 | mv_port_init(&ap->ioaddr, port_mmio); | |
3969 | } | |
3970 | ||
3971 | for (hc = 0; hc < n_hc; hc++) { | |
3972 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); | |
3973 | ||
3974 | VPRINTK("HC%i: HC config=0x%08x HC IRQ cause " | |
3975 | "(before clear)=0x%08x\n", hc, | |
3976 | readl(hc_mmio + HC_CFG), | |
3977 | readl(hc_mmio + HC_IRQ_CAUSE)); | |
3978 | ||
3979 | /* Clear any currently outstanding hc interrupt conditions */ | |
3980 | writelfl(0, hc_mmio + HC_IRQ_CAUSE); | |
3981 | } | |
3982 | ||
3983 | if (!IS_SOC(hpriv)) { | |
3984 | /* Clear any currently outstanding host interrupt conditions */ | |
3985 | writelfl(0, mmio + hpriv->irq_cause_offset); | |
3986 | ||
3987 | /* and unmask interrupt generation for host regs */ | |
3988 | writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_offset); | |
3989 | } | |
3990 | ||
3991 | /* | |
3992 | * enable only global host interrupts for now. | |
3993 | * The per-port interrupts get done later as ports are set up. | |
3994 | */ | |
3995 | mv_set_main_irq_mask(host, 0, PCI_ERR); | |
3996 | mv_set_irq_coalescing(host, irq_coalescing_io_count, | |
3997 | irq_coalescing_usecs); | |
3998 | done: | |
3999 | return rc; | |
4000 | } | |
4001 | ||
4002 | static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev) | |
4003 | { | |
4004 | hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ, | |
4005 | MV_CRQB_Q_SZ, 0); | |
4006 | if (!hpriv->crqb_pool) | |
4007 | return -ENOMEM; | |
4008 | ||
4009 | hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ, | |
4010 | MV_CRPB_Q_SZ, 0); | |
4011 | if (!hpriv->crpb_pool) | |
4012 | return -ENOMEM; | |
4013 | ||
4014 | hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ, | |
4015 | MV_SG_TBL_SZ, 0); | |
4016 | if (!hpriv->sg_tbl_pool) | |
4017 | return -ENOMEM; | |
4018 | ||
4019 | return 0; | |
4020 | } | |
4021 | ||
4022 | static void mv_conf_mbus_windows(struct mv_host_priv *hpriv, | |
4023 | const struct mbus_dram_target_info *dram) | |
4024 | { | |
4025 | int i; | |
4026 | ||
4027 | for (i = 0; i < 4; i++) { | |
4028 | writel(0, hpriv->base + WINDOW_CTRL(i)); | |
4029 | writel(0, hpriv->base + WINDOW_BASE(i)); | |
4030 | } | |
4031 | ||
4032 | for (i = 0; i < dram->num_cs; i++) { | |
4033 | const struct mbus_dram_window *cs = dram->cs + i; | |
4034 | ||
4035 | writel(((cs->size - 1) & 0xffff0000) | | |
4036 | (cs->mbus_attr << 8) | | |
4037 | (dram->mbus_dram_target_id << 4) | 1, | |
4038 | hpriv->base + WINDOW_CTRL(i)); | |
4039 | writel(cs->base, hpriv->base + WINDOW_BASE(i)); | |
4040 | } | |
4041 | } | |
4042 | ||
4043 | /** | |
4044 | * mv_platform_probe - handle a positive probe of an soc Marvell | |
4045 | * host | |
4046 | * @pdev: platform device found | |
4047 | * | |
4048 | * LOCKING: | |
4049 | * Inherited from caller. | |
4050 | */ | |
4051 | static int mv_platform_probe(struct platform_device *pdev) | |
4052 | { | |
4053 | const struct mv_sata_platform_data *mv_platform_data; | |
4054 | const struct mbus_dram_target_info *dram; | |
4055 | const struct ata_port_info *ppi[] = | |
4056 | { &mv_port_info[chip_soc], NULL }; | |
4057 | struct ata_host *host; | |
4058 | struct mv_host_priv *hpriv; | |
4059 | struct resource *res; | |
4060 | int n_ports = 0, irq = 0; | |
4061 | int rc; | |
4062 | int port; | |
4063 | ||
4064 | ata_print_version_once(&pdev->dev, DRV_VERSION); | |
4065 | ||
4066 | /* | |
4067 | * Simple resource validation .. | |
4068 | */ | |
4069 | if (unlikely(pdev->num_resources != 2)) { | |
4070 | dev_err(&pdev->dev, "invalid number of resources\n"); | |
4071 | return -EINVAL; | |
4072 | } | |
4073 | ||
4074 | /* | |
4075 | * Get the register base first | |
4076 | */ | |
4077 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
4078 | if (res == NULL) | |
4079 | return -EINVAL; | |
4080 | ||
4081 | /* allocate host */ | |
4082 | if (pdev->dev.of_node) { | |
4083 | of_property_read_u32(pdev->dev.of_node, "nr-ports", &n_ports); | |
4084 | irq = irq_of_parse_and_map(pdev->dev.of_node, 0); | |
4085 | } else { | |
4086 | mv_platform_data = dev_get_platdata(&pdev->dev); | |
4087 | n_ports = mv_platform_data->n_ports; | |
4088 | irq = platform_get_irq(pdev, 0); | |
4089 | } | |
4090 | ||
4091 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
4092 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
4093 | ||
4094 | if (!host || !hpriv) | |
4095 | return -ENOMEM; | |
4096 | hpriv->port_clks = devm_kzalloc(&pdev->dev, | |
4097 | sizeof(struct clk *) * n_ports, | |
4098 | GFP_KERNEL); | |
4099 | if (!hpriv->port_clks) | |
4100 | return -ENOMEM; | |
4101 | hpriv->port_phys = devm_kzalloc(&pdev->dev, | |
4102 | sizeof(struct phy *) * n_ports, | |
4103 | GFP_KERNEL); | |
4104 | if (!hpriv->port_phys) | |
4105 | return -ENOMEM; | |
4106 | host->private_data = hpriv; | |
4107 | hpriv->board_idx = chip_soc; | |
4108 | ||
4109 | host->iomap = NULL; | |
4110 | hpriv->base = devm_ioremap(&pdev->dev, res->start, | |
4111 | resource_size(res)); | |
4112 | hpriv->base -= SATAHC0_REG_BASE; | |
4113 | ||
4114 | hpriv->clk = clk_get(&pdev->dev, NULL); | |
4115 | if (IS_ERR(hpriv->clk)) | |
4116 | dev_notice(&pdev->dev, "cannot get optional clkdev\n"); | |
4117 | else | |
4118 | clk_prepare_enable(hpriv->clk); | |
4119 | ||
4120 | for (port = 0; port < n_ports; port++) { | |
4121 | char port_number[16]; | |
4122 | sprintf(port_number, "%d", port); | |
4123 | hpriv->port_clks[port] = clk_get(&pdev->dev, port_number); | |
4124 | if (!IS_ERR(hpriv->port_clks[port])) | |
4125 | clk_prepare_enable(hpriv->port_clks[port]); | |
4126 | ||
4127 | sprintf(port_number, "port%d", port); | |
4128 | hpriv->port_phys[port] = devm_phy_optional_get(&pdev->dev, | |
4129 | port_number); | |
4130 | if (IS_ERR(hpriv->port_phys[port])) { | |
4131 | rc = PTR_ERR(hpriv->port_phys[port]); | |
4132 | hpriv->port_phys[port] = NULL; | |
4133 | if (rc != -EPROBE_DEFER) | |
4134 | dev_warn(&pdev->dev, "error getting phy %d", rc); | |
4135 | ||
4136 | /* Cleanup only the initialized ports */ | |
4137 | hpriv->n_ports = port; | |
4138 | goto err; | |
4139 | } else | |
4140 | phy_power_on(hpriv->port_phys[port]); | |
4141 | } | |
4142 | ||
4143 | /* All the ports have been initialized */ | |
4144 | hpriv->n_ports = n_ports; | |
4145 | ||
4146 | /* | |
4147 | * (Re-)program MBUS remapping windows if we are asked to. | |
4148 | */ | |
4149 | dram = mv_mbus_dram_info(); | |
4150 | if (dram) | |
4151 | mv_conf_mbus_windows(hpriv, dram); | |
4152 | ||
4153 | rc = mv_create_dma_pools(hpriv, &pdev->dev); | |
4154 | if (rc) | |
4155 | goto err; | |
4156 | ||
4157 | /* | |
4158 | * To allow disk hotplug on Armada 370/XP SoCs, the PHY speed must be | |
4159 | * updated in the LP_PHY_CTL register. | |
4160 | */ | |
4161 | if (pdev->dev.of_node && | |
4162 | of_device_is_compatible(pdev->dev.of_node, | |
4163 | "marvell,armada-370-sata")) | |
4164 | hpriv->hp_flags |= MV_HP_FIX_LP_PHY_CTL; | |
4165 | ||
4166 | /* initialize adapter */ | |
4167 | rc = mv_init_host(host); | |
4168 | if (rc) | |
4169 | goto err; | |
4170 | ||
4171 | dev_info(&pdev->dev, "slots %u ports %d\n", | |
4172 | (unsigned)MV_MAX_Q_DEPTH, host->n_ports); | |
4173 | ||
4174 | rc = ata_host_activate(host, irq, mv_interrupt, IRQF_SHARED, &mv6_sht); | |
4175 | if (!rc) | |
4176 | return 0; | |
4177 | ||
4178 | err: | |
4179 | if (!IS_ERR(hpriv->clk)) { | |
4180 | clk_disable_unprepare(hpriv->clk); | |
4181 | clk_put(hpriv->clk); | |
4182 | } | |
4183 | for (port = 0; port < hpriv->n_ports; port++) { | |
4184 | if (!IS_ERR(hpriv->port_clks[port])) { | |
4185 | clk_disable_unprepare(hpriv->port_clks[port]); | |
4186 | clk_put(hpriv->port_clks[port]); | |
4187 | } | |
4188 | if (hpriv->port_phys[port]) | |
4189 | phy_power_off(hpriv->port_phys[port]); | |
4190 | } | |
4191 | ||
4192 | return rc; | |
4193 | } | |
4194 | ||
4195 | /* | |
4196 | * | |
4197 | * mv_platform_remove - unplug a platform interface | |
4198 | * @pdev: platform device | |
4199 | * | |
4200 | * A platform bus SATA device has been unplugged. Perform the needed | |
4201 | * cleanup. Also called on module unload for any active devices. | |
4202 | */ | |
4203 | static int mv_platform_remove(struct platform_device *pdev) | |
4204 | { | |
4205 | struct ata_host *host = platform_get_drvdata(pdev); | |
4206 | struct mv_host_priv *hpriv = host->private_data; | |
4207 | int port; | |
4208 | ata_host_detach(host); | |
4209 | ||
4210 | if (!IS_ERR(hpriv->clk)) { | |
4211 | clk_disable_unprepare(hpriv->clk); | |
4212 | clk_put(hpriv->clk); | |
4213 | } | |
4214 | for (port = 0; port < host->n_ports; port++) { | |
4215 | if (!IS_ERR(hpriv->port_clks[port])) { | |
4216 | clk_disable_unprepare(hpriv->port_clks[port]); | |
4217 | clk_put(hpriv->port_clks[port]); | |
4218 | } | |
4219 | if (hpriv->port_phys[port]) | |
4220 | phy_power_off(hpriv->port_phys[port]); | |
4221 | } | |
4222 | return 0; | |
4223 | } | |
4224 | ||
4225 | #ifdef CONFIG_PM_SLEEP | |
4226 | static int mv_platform_suspend(struct platform_device *pdev, pm_message_t state) | |
4227 | { | |
4228 | struct ata_host *host = platform_get_drvdata(pdev); | |
4229 | if (host) | |
4230 | return ata_host_suspend(host, state); | |
4231 | else | |
4232 | return 0; | |
4233 | } | |
4234 | ||
4235 | static int mv_platform_resume(struct platform_device *pdev) | |
4236 | { | |
4237 | struct ata_host *host = platform_get_drvdata(pdev); | |
4238 | const struct mbus_dram_target_info *dram; | |
4239 | int ret; | |
4240 | ||
4241 | if (host) { | |
4242 | struct mv_host_priv *hpriv = host->private_data; | |
4243 | ||
4244 | /* | |
4245 | * (Re-)program MBUS remapping windows if we are asked to. | |
4246 | */ | |
4247 | dram = mv_mbus_dram_info(); | |
4248 | if (dram) | |
4249 | mv_conf_mbus_windows(hpriv, dram); | |
4250 | ||
4251 | /* initialize adapter */ | |
4252 | ret = mv_init_host(host); | |
4253 | if (ret) { | |
4254 | printk(KERN_ERR DRV_NAME ": Error during HW init\n"); | |
4255 | return ret; | |
4256 | } | |
4257 | ata_host_resume(host); | |
4258 | } | |
4259 | ||
4260 | return 0; | |
4261 | } | |
4262 | #else | |
4263 | #define mv_platform_suspend NULL | |
4264 | #define mv_platform_resume NULL | |
4265 | #endif | |
4266 | ||
4267 | #ifdef CONFIG_OF | |
4268 | static struct of_device_id mv_sata_dt_ids[] = { | |
4269 | { .compatible = "marvell,armada-370-sata", }, | |
4270 | { .compatible = "marvell,orion-sata", }, | |
4271 | {}, | |
4272 | }; | |
4273 | MODULE_DEVICE_TABLE(of, mv_sata_dt_ids); | |
4274 | #endif | |
4275 | ||
4276 | static struct platform_driver mv_platform_driver = { | |
4277 | .probe = mv_platform_probe, | |
4278 | .remove = mv_platform_remove, | |
4279 | .suspend = mv_platform_suspend, | |
4280 | .resume = mv_platform_resume, | |
4281 | .driver = { | |
4282 | .name = DRV_NAME, | |
4283 | .owner = THIS_MODULE, | |
4284 | .of_match_table = of_match_ptr(mv_sata_dt_ids), | |
4285 | }, | |
4286 | }; | |
4287 | ||
4288 | ||
4289 | #ifdef CONFIG_PCI | |
4290 | static int mv_pci_init_one(struct pci_dev *pdev, | |
4291 | const struct pci_device_id *ent); | |
4292 | #ifdef CONFIG_PM_SLEEP | |
4293 | static int mv_pci_device_resume(struct pci_dev *pdev); | |
4294 | #endif | |
4295 | ||
4296 | ||
4297 | static struct pci_driver mv_pci_driver = { | |
4298 | .name = DRV_NAME, | |
4299 | .id_table = mv_pci_tbl, | |
4300 | .probe = mv_pci_init_one, | |
4301 | .remove = ata_pci_remove_one, | |
4302 | #ifdef CONFIG_PM_SLEEP | |
4303 | .suspend = ata_pci_device_suspend, | |
4304 | .resume = mv_pci_device_resume, | |
4305 | #endif | |
4306 | ||
4307 | }; | |
4308 | ||
4309 | /* move to PCI layer or libata core? */ | |
4310 | static int pci_go_64(struct pci_dev *pdev) | |
4311 | { | |
4312 | int rc; | |
4313 | ||
4314 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
4315 | rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); | |
4316 | if (rc) { | |
4317 | rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
4318 | if (rc) { | |
4319 | dev_err(&pdev->dev, | |
4320 | "64-bit DMA enable failed\n"); | |
4321 | return rc; | |
4322 | } | |
4323 | } | |
4324 | } else { | |
4325 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
4326 | if (rc) { | |
4327 | dev_err(&pdev->dev, "32-bit DMA enable failed\n"); | |
4328 | return rc; | |
4329 | } | |
4330 | rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
4331 | if (rc) { | |
4332 | dev_err(&pdev->dev, | |
4333 | "32-bit consistent DMA enable failed\n"); | |
4334 | return rc; | |
4335 | } | |
4336 | } | |
4337 | ||
4338 | return rc; | |
4339 | } | |
4340 | ||
4341 | /** | |
4342 | * mv_print_info - Dump key info to kernel log for perusal. | |
4343 | * @host: ATA host to print info about | |
4344 | * | |
4345 | * FIXME: complete this. | |
4346 | * | |
4347 | * LOCKING: | |
4348 | * Inherited from caller. | |
4349 | */ | |
4350 | static void mv_print_info(struct ata_host *host) | |
4351 | { | |
4352 | struct pci_dev *pdev = to_pci_dev(host->dev); | |
4353 | struct mv_host_priv *hpriv = host->private_data; | |
4354 | u8 scc; | |
4355 | const char *scc_s, *gen; | |
4356 | ||
4357 | /* Use this to determine the HW stepping of the chip so we know | |
4358 | * what errata to workaround | |
4359 | */ | |
4360 | pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc); | |
4361 | if (scc == 0) | |
4362 | scc_s = "SCSI"; | |
4363 | else if (scc == 0x01) | |
4364 | scc_s = "RAID"; | |
4365 | else | |
4366 | scc_s = "?"; | |
4367 | ||
4368 | if (IS_GEN_I(hpriv)) | |
4369 | gen = "I"; | |
4370 | else if (IS_GEN_II(hpriv)) | |
4371 | gen = "II"; | |
4372 | else if (IS_GEN_IIE(hpriv)) | |
4373 | gen = "IIE"; | |
4374 | else | |
4375 | gen = "?"; | |
4376 | ||
4377 | dev_info(&pdev->dev, "Gen-%s %u slots %u ports %s mode IRQ via %s\n", | |
4378 | gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports, | |
4379 | scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx"); | |
4380 | } | |
4381 | ||
4382 | /** | |
4383 | * mv_pci_init_one - handle a positive probe of a PCI Marvell host | |
4384 | * @pdev: PCI device found | |
4385 | * @ent: PCI device ID entry for the matched host | |
4386 | * | |
4387 | * LOCKING: | |
4388 | * Inherited from caller. | |
4389 | */ | |
4390 | static int mv_pci_init_one(struct pci_dev *pdev, | |
4391 | const struct pci_device_id *ent) | |
4392 | { | |
4393 | unsigned int board_idx = (unsigned int)ent->driver_data; | |
4394 | const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL }; | |
4395 | struct ata_host *host; | |
4396 | struct mv_host_priv *hpriv; | |
4397 | int n_ports, port, rc; | |
4398 | ||
4399 | ata_print_version_once(&pdev->dev, DRV_VERSION); | |
4400 | ||
4401 | /* allocate host */ | |
4402 | n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC; | |
4403 | ||
4404 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); | |
4405 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); | |
4406 | if (!host || !hpriv) | |
4407 | return -ENOMEM; | |
4408 | host->private_data = hpriv; | |
4409 | hpriv->n_ports = n_ports; | |
4410 | hpriv->board_idx = board_idx; | |
4411 | ||
4412 | /* acquire resources */ | |
4413 | rc = pcim_enable_device(pdev); | |
4414 | if (rc) | |
4415 | return rc; | |
4416 | ||
4417 | rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME); | |
4418 | if (rc == -EBUSY) | |
4419 | pcim_pin_device(pdev); | |
4420 | if (rc) | |
4421 | return rc; | |
4422 | host->iomap = pcim_iomap_table(pdev); | |
4423 | hpriv->base = host->iomap[MV_PRIMARY_BAR]; | |
4424 | ||
4425 | rc = pci_go_64(pdev); | |
4426 | if (rc) | |
4427 | return rc; | |
4428 | ||
4429 | rc = mv_create_dma_pools(hpriv, &pdev->dev); | |
4430 | if (rc) | |
4431 | return rc; | |
4432 | ||
4433 | for (port = 0; port < host->n_ports; port++) { | |
4434 | struct ata_port *ap = host->ports[port]; | |
4435 | void __iomem *port_mmio = mv_port_base(hpriv->base, port); | |
4436 | unsigned int offset = port_mmio - hpriv->base; | |
4437 | ||
4438 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio"); | |
4439 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port"); | |
4440 | } | |
4441 | ||
4442 | /* initialize adapter */ | |
4443 | rc = mv_init_host(host); | |
4444 | if (rc) | |
4445 | return rc; | |
4446 | ||
4447 | /* Enable message-switched interrupts, if requested */ | |
4448 | if (msi && pci_enable_msi(pdev) == 0) | |
4449 | hpriv->hp_flags |= MV_HP_FLAG_MSI; | |
4450 | ||
4451 | mv_dump_pci_cfg(pdev, 0x68); | |
4452 | mv_print_info(host); | |
4453 | ||
4454 | pci_set_master(pdev); | |
4455 | pci_try_set_mwi(pdev); | |
4456 | return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED, | |
4457 | IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht); | |
4458 | } | |
4459 | ||
4460 | #ifdef CONFIG_PM_SLEEP | |
4461 | static int mv_pci_device_resume(struct pci_dev *pdev) | |
4462 | { | |
4463 | struct ata_host *host = pci_get_drvdata(pdev); | |
4464 | int rc; | |
4465 | ||
4466 | rc = ata_pci_device_do_resume(pdev); | |
4467 | if (rc) | |
4468 | return rc; | |
4469 | ||
4470 | /* initialize adapter */ | |
4471 | rc = mv_init_host(host); | |
4472 | if (rc) | |
4473 | return rc; | |
4474 | ||
4475 | ata_host_resume(host); | |
4476 | ||
4477 | return 0; | |
4478 | } | |
4479 | #endif | |
4480 | #endif | |
4481 | ||
4482 | static int __init mv_init(void) | |
4483 | { | |
4484 | int rc = -ENODEV; | |
4485 | #ifdef CONFIG_PCI | |
4486 | rc = pci_register_driver(&mv_pci_driver); | |
4487 | if (rc < 0) | |
4488 | return rc; | |
4489 | #endif | |
4490 | rc = platform_driver_register(&mv_platform_driver); | |
4491 | ||
4492 | #ifdef CONFIG_PCI | |
4493 | if (rc < 0) | |
4494 | pci_unregister_driver(&mv_pci_driver); | |
4495 | #endif | |
4496 | return rc; | |
4497 | } | |
4498 | ||
4499 | static void __exit mv_exit(void) | |
4500 | { | |
4501 | #ifdef CONFIG_PCI | |
4502 | pci_unregister_driver(&mv_pci_driver); | |
4503 | #endif | |
4504 | platform_driver_unregister(&mv_platform_driver); | |
4505 | } | |
4506 | ||
4507 | MODULE_AUTHOR("Brett Russ"); | |
4508 | MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers"); | |
4509 | MODULE_LICENSE("GPL"); | |
4510 | MODULE_DEVICE_TABLE(pci, mv_pci_tbl); | |
4511 | MODULE_VERSION(DRV_VERSION); | |
4512 | MODULE_ALIAS("platform:" DRV_NAME); | |
4513 | ||
4514 | module_init(mv_init); | |
4515 | module_exit(mv_exit); |