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cgroup: fix a race condition in manipulating tsk->cg_list
[linux-2.6/kmemtrace.git] / drivers / scsi / mvsas.c
blobe55b9037adb224286b4a2a0a1f0efd77a2b3b967
1 /*
2 mvsas.c - Marvell 88SE6440 SAS/SATA support
3
4 Copyright 2007 Red Hat, Inc.
5 Copyright 2008 Marvell. <kewei@marvell.com>
6
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License as
9 published by the Free Software Foundation; either version 2,
10 or (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty
14 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 See the GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public
18 License along with this program; see the file COPYING. If not,
19 write to the Free Software Foundation, 675 Mass Ave, Cambridge,
20 MA 02139, USA.
21
22 ---------------------------------------------------------------
23
24 Random notes:
25 * hardware supports controlling the endian-ness of data
26 structures. this permits elimination of all the le32_to_cpu()
27 and cpu_to_le32() conversions.
28
29 */
30
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/pci.h>
34 #include <linux/interrupt.h>
35 #include <linux/spinlock.h>
36 #include <linux/delay.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/ctype.h>
39 #include <scsi/libsas.h>
40 #include <scsi/scsi_tcq.h>
41 #include <scsi/sas_ata.h>
42 #include <asm/io.h>
43
44 #define DRV_NAME "mvsas"
45 #define DRV_VERSION "0.5.2"
46 #define _MV_DUMP 0
47 #define MVS_DISABLE_NVRAM
48 #define MVS_DISABLE_MSI
49
50 #define mr32(reg) readl(regs + MVS_##reg)
51 #define mw32(reg,val) writel((val), regs + MVS_##reg)
52 #define mw32_f(reg,val) do { \
53 writel((val), regs + MVS_##reg); \
54 readl(regs + MVS_##reg); \
55 } while (0)
56
57 #define MVS_ID_NOT_MAPPED 0x7f
58 #define MVS_CHIP_SLOT_SZ (1U << mvi->chip->slot_width)
59
60 /* offset for D2H FIS in the Received FIS List Structure */
61 #define SATA_RECEIVED_D2H_FIS(reg_set) \
62 ((void *) mvi->rx_fis + 0x400 + 0x100 * reg_set + 0x40)
63 #define SATA_RECEIVED_PIO_FIS(reg_set) \
64 ((void *) mvi->rx_fis + 0x400 + 0x100 * reg_set + 0x20)
65 #define UNASSOC_D2H_FIS(id) \
66 ((void *) mvi->rx_fis + 0x100 * id)
67
68 #define for_each_phy(__lseq_mask, __mc, __lseq, __rest) \
69 for ((__mc) = (__lseq_mask), (__lseq) = 0; \
70 (__mc) != 0 && __rest; \
71 (++__lseq), (__mc) >>= 1)
72
73 /* driver compile-time configuration */
74 enum driver_configuration {
75 MVS_TX_RING_SZ = 1024, /* TX ring size (12-bit) */
76 MVS_RX_RING_SZ = 1024, /* RX ring size (12-bit) */
77 /* software requires power-of-2
78 ring size */
79
80 MVS_SLOTS = 512, /* command slots */
81 MVS_SLOT_BUF_SZ = 8192, /* cmd tbl + IU + status + PRD */
82 MVS_SSP_CMD_SZ = 64, /* SSP command table buffer size */
83 MVS_ATA_CMD_SZ = 96, /* SATA command table buffer size */
84 MVS_OAF_SZ = 64, /* Open address frame buffer size */
85
86 MVS_RX_FIS_COUNT = 17, /* Optional rx'd FISs (max 17) */
87
88 MVS_QUEUE_SIZE = 30, /* Support Queue depth */
89 MVS_CAN_QUEUE = MVS_SLOTS - 1, /* SCSI Queue depth */
90 };
91
92 /* unchangeable hardware details */
93 enum hardware_details {
94 MVS_MAX_PHYS = 8, /* max. possible phys */
95 MVS_MAX_PORTS = 8, /* max. possible ports */
96 MVS_RX_FISL_SZ = 0x400 + (MVS_RX_FIS_COUNT * 0x100),
97 };
98
99 /* peripheral registers (BAR2) */
100 enum peripheral_registers {
101 SPI_CTL = 0x10, /* EEPROM control */
102 SPI_CMD = 0x14, /* EEPROM command */
103 SPI_DATA = 0x18, /* EEPROM data */
104 };
105
106 enum peripheral_register_bits {
107 TWSI_RDY = (1U << 7), /* EEPROM interface ready */
108 TWSI_RD = (1U << 4), /* EEPROM read access */
109
110 SPI_ADDR_MASK = 0x3ffff, /* bits 17:0 */
111 };
112
113 /* enhanced mode registers (BAR4) */
114 enum hw_registers {
115 MVS_GBL_CTL = 0x04, /* global control */
116 MVS_GBL_INT_STAT = 0x08, /* global irq status */
117 MVS_GBL_PI = 0x0C, /* ports implemented bitmask */
118 MVS_GBL_PORT_TYPE = 0xa0, /* port type */
119
120 MVS_CTL = 0x100, /* SAS/SATA port configuration */
121 MVS_PCS = 0x104, /* SAS/SATA port control/status */
122 MVS_CMD_LIST_LO = 0x108, /* cmd list addr */
123 MVS_CMD_LIST_HI = 0x10C,
124 MVS_RX_FIS_LO = 0x110, /* RX FIS list addr */
125 MVS_RX_FIS_HI = 0x114,
126
127 MVS_TX_CFG = 0x120, /* TX configuration */
128 MVS_TX_LO = 0x124, /* TX (delivery) ring addr */
129 MVS_TX_HI = 0x128,
130
131 MVS_TX_PROD_IDX = 0x12C, /* TX producer pointer */
132 MVS_TX_CONS_IDX = 0x130, /* TX consumer pointer (RO) */
133 MVS_RX_CFG = 0x134, /* RX configuration */
134 MVS_RX_LO = 0x138, /* RX (completion) ring addr */
135 MVS_RX_HI = 0x13C,
136 MVS_RX_CONS_IDX = 0x140, /* RX consumer pointer (RO) */
137
138 MVS_INT_COAL = 0x148, /* Int coalescing config */
139 MVS_INT_COAL_TMOUT = 0x14C, /* Int coalescing timeout */
140 MVS_INT_STAT = 0x150, /* Central int status */
141 MVS_INT_MASK = 0x154, /* Central int enable */
142 MVS_INT_STAT_SRS = 0x158, /* SATA register set status */
143 MVS_INT_MASK_SRS = 0x15C,
144
145 /* ports 1-3 follow after this */
146 MVS_P0_INT_STAT = 0x160, /* port0 interrupt status */
147 MVS_P0_INT_MASK = 0x164, /* port0 interrupt mask */
148 MVS_P4_INT_STAT = 0x200, /* Port 4 interrupt status */
149 MVS_P4_INT_MASK = 0x204, /* Port 4 interrupt enable mask */
150
151 /* ports 1-3 follow after this */
152 MVS_P0_SER_CTLSTAT = 0x180, /* port0 serial control/status */
153 MVS_P4_SER_CTLSTAT = 0x220, /* port4 serial control/status */
154
155 MVS_CMD_ADDR = 0x1B8, /* Command register port (addr) */
156 MVS_CMD_DATA = 0x1BC, /* Command register port (data) */
157
158 /* ports 1-3 follow after this */
159 MVS_P0_CFG_ADDR = 0x1C0, /* port0 phy register address */
160 MVS_P0_CFG_DATA = 0x1C4, /* port0 phy register data */
161 MVS_P4_CFG_ADDR = 0x230, /* Port 4 config address */
162 MVS_P4_CFG_DATA = 0x234, /* Port 4 config data */
163
164 /* ports 1-3 follow after this */
165 MVS_P0_VSR_ADDR = 0x1E0, /* port0 VSR address */
166 MVS_P0_VSR_DATA = 0x1E4, /* port0 VSR data */
167 MVS_P4_VSR_ADDR = 0x250, /* port 4 VSR addr */
168 MVS_P4_VSR_DATA = 0x254, /* port 4 VSR data */
169 };
170
171 enum hw_register_bits {
172 /* MVS_GBL_CTL */
173 INT_EN = (1U << 1), /* Global int enable */
174 HBA_RST = (1U << 0), /* HBA reset */
175
176 /* MVS_GBL_INT_STAT */
177 INT_XOR = (1U << 4), /* XOR engine event */
178 INT_SAS_SATA = (1U << 0), /* SAS/SATA event */
179
180 /* MVS_GBL_PORT_TYPE */ /* shl for ports 1-3 */
181 SATA_TARGET = (1U << 16), /* port0 SATA target enable */
182 MODE_AUTO_DET_PORT7 = (1U << 15), /* port0 SAS/SATA autodetect */
183 MODE_AUTO_DET_PORT6 = (1U << 14),
184 MODE_AUTO_DET_PORT5 = (1U << 13),
185 MODE_AUTO_DET_PORT4 = (1U << 12),
186 MODE_AUTO_DET_PORT3 = (1U << 11),
187 MODE_AUTO_DET_PORT2 = (1U << 10),
188 MODE_AUTO_DET_PORT1 = (1U << 9),
189 MODE_AUTO_DET_PORT0 = (1U << 8),
190 MODE_AUTO_DET_EN = MODE_AUTO_DET_PORT0 | MODE_AUTO_DET_PORT1 |
191 MODE_AUTO_DET_PORT2 | MODE_AUTO_DET_PORT3 |
192 MODE_AUTO_DET_PORT4 | MODE_AUTO_DET_PORT5 |
193 MODE_AUTO_DET_PORT6 | MODE_AUTO_DET_PORT7,
194 MODE_SAS_PORT7_MASK = (1U << 7), /* port0 SAS(1), SATA(0) mode */
195 MODE_SAS_PORT6_MASK = (1U << 6),
196 MODE_SAS_PORT5_MASK = (1U << 5),
197 MODE_SAS_PORT4_MASK = (1U << 4),
198 MODE_SAS_PORT3_MASK = (1U << 3),
199 MODE_SAS_PORT2_MASK = (1U << 2),
200 MODE_SAS_PORT1_MASK = (1U << 1),
201 MODE_SAS_PORT0_MASK = (1U << 0),
202 MODE_SAS_SATA = MODE_SAS_PORT0_MASK | MODE_SAS_PORT1_MASK |
203 MODE_SAS_PORT2_MASK | MODE_SAS_PORT3_MASK |
204 MODE_SAS_PORT4_MASK | MODE_SAS_PORT5_MASK |
205 MODE_SAS_PORT6_MASK | MODE_SAS_PORT7_MASK,
206
207 /* SAS_MODE value may be
208 * dictated (in hw) by values
209 * of SATA_TARGET & AUTO_DET
210 */
211
212 /* MVS_TX_CFG */
213 TX_EN = (1U << 16), /* Enable TX */
214 TX_RING_SZ_MASK = 0xfff, /* TX ring size, bits 11:0 */
215
216 /* MVS_RX_CFG */
217 RX_EN = (1U << 16), /* Enable RX */
218 RX_RING_SZ_MASK = 0xfff, /* RX ring size, bits 11:0 */
219
220 /* MVS_INT_COAL */
221 COAL_EN = (1U << 16), /* Enable int coalescing */
222
223 /* MVS_INT_STAT, MVS_INT_MASK */
224 CINT_I2C = (1U << 31), /* I2C event */
225 CINT_SW0 = (1U << 30), /* software event 0 */
226 CINT_SW1 = (1U << 29), /* software event 1 */
227 CINT_PRD_BC = (1U << 28), /* PRD BC err for read cmd */
228 CINT_DMA_PCIE = (1U << 27), /* DMA to PCIE timeout */
229 CINT_MEM = (1U << 26), /* int mem parity err */
230 CINT_I2C_SLAVE = (1U << 25), /* slave I2C event */
231 CINT_SRS = (1U << 3), /* SRS event */
232 CINT_CI_STOP = (1U << 1), /* cmd issue stopped */
233 CINT_DONE = (1U << 0), /* cmd completion */
234
235 /* shl for ports 1-3 */
236 CINT_PORT_STOPPED = (1U << 16), /* port0 stopped */
237 CINT_PORT = (1U << 8), /* port0 event */
238 CINT_PORT_MASK_OFFSET = 8,
239 CINT_PORT_MASK = (0xFF << CINT_PORT_MASK_OFFSET),
240
241 /* TX (delivery) ring bits */
242 TXQ_CMD_SHIFT = 29,
243 TXQ_CMD_SSP = 1, /* SSP protocol */
244 TXQ_CMD_SMP = 2, /* SMP protocol */
245 TXQ_CMD_STP = 3, /* STP/SATA protocol */
246 TXQ_CMD_SSP_FREE_LIST = 4, /* add to SSP targ free list */
247 TXQ_CMD_SLOT_RESET = 7, /* reset command slot */
248 TXQ_MODE_I = (1U << 28), /* mode: 0=target,1=initiator */
249 TXQ_PRIO_HI = (1U << 27), /* priority: 0=normal, 1=high */
250 TXQ_SRS_SHIFT = 20, /* SATA register set */
251 TXQ_SRS_MASK = 0x7f,
252 TXQ_PHY_SHIFT = 12, /* PHY bitmap */
253 TXQ_PHY_MASK = 0xff,
254 TXQ_SLOT_MASK = 0xfff, /* slot number */
255
256 /* RX (completion) ring bits */
257 RXQ_GOOD = (1U << 23), /* Response good */
258 RXQ_SLOT_RESET = (1U << 21), /* Slot reset complete */
259 RXQ_CMD_RX = (1U << 20), /* target cmd received */
260 RXQ_ATTN = (1U << 19), /* attention */
261 RXQ_RSP = (1U << 18), /* response frame xfer'd */
262 RXQ_ERR = (1U << 17), /* err info rec xfer'd */
263 RXQ_DONE = (1U << 16), /* cmd complete */
264 RXQ_SLOT_MASK = 0xfff, /* slot number */
265
266 /* mvs_cmd_hdr bits */
267 MCH_PRD_LEN_SHIFT = 16, /* 16-bit PRD table len */
268 MCH_SSP_FR_TYPE_SHIFT = 13, /* SSP frame type */
269
270 /* SSP initiator only */
271 MCH_SSP_FR_CMD = 0x0, /* COMMAND frame */
272
273 /* SSP initiator or target */
274 MCH_SSP_FR_TASK = 0x1, /* TASK frame */
275
276 /* SSP target only */
277 MCH_SSP_FR_XFER_RDY = 0x4, /* XFER_RDY frame */
278 MCH_SSP_FR_RESP = 0x5, /* RESPONSE frame */
279 MCH_SSP_FR_READ = 0x6, /* Read DATA frame(s) */
280 MCH_SSP_FR_READ_RESP = 0x7, /* ditto, plus RESPONSE */
281
282 MCH_PASSTHRU = (1U << 12), /* pass-through (SSP) */
283 MCH_FBURST = (1U << 11), /* first burst (SSP) */
284 MCH_CHK_LEN = (1U << 10), /* chk xfer len (SSP) */
285 MCH_RETRY = (1U << 9), /* tport layer retry (SSP) */
286 MCH_PROTECTION = (1U << 8), /* protection info rec (SSP) */
287 MCH_RESET = (1U << 7), /* Reset (STP/SATA) */
288 MCH_FPDMA = (1U << 6), /* First party DMA (STP/SATA) */
289 MCH_ATAPI = (1U << 5), /* ATAPI (STP/SATA) */
290 MCH_BIST = (1U << 4), /* BIST activate (STP/SATA) */
291 MCH_PMP_MASK = 0xf, /* PMP from cmd FIS (STP/SATA)*/
292
293 CCTL_RST = (1U << 5), /* port logic reset */
294
295 /* 0(LSB first), 1(MSB first) */
296 CCTL_ENDIAN_DATA = (1U << 3), /* PRD data */
297 CCTL_ENDIAN_RSP = (1U << 2), /* response frame */
298 CCTL_ENDIAN_OPEN = (1U << 1), /* open address frame */
299 CCTL_ENDIAN_CMD = (1U << 0), /* command table */
300
301 /* MVS_Px_SER_CTLSTAT (per-phy control) */
302 PHY_SSP_RST = (1U << 3), /* reset SSP link layer */
303 PHY_BCAST_CHG = (1U << 2), /* broadcast(change) notif */
304 PHY_RST_HARD = (1U << 1), /* hard reset + phy reset */
305 PHY_RST = (1U << 0), /* phy reset */
306 PHY_MIN_SPP_PHYS_LINK_RATE_MASK = (0xF << 8),
307 PHY_MAX_SPP_PHYS_LINK_RATE_MASK = (0xF << 12),
308 PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET = (16),
309 PHY_NEG_SPP_PHYS_LINK_RATE_MASK =
310 (0xF << PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET),
311 PHY_READY_MASK = (1U << 20),
312
313 /* MVS_Px_INT_STAT, MVS_Px_INT_MASK (per-phy events) */
314 PHYEV_DEC_ERR = (1U << 24), /* Phy Decoding Error */
315 PHYEV_UNASSOC_FIS = (1U << 19), /* unassociated FIS rx'd */
316 PHYEV_AN = (1U << 18), /* SATA async notification */
317 PHYEV_BIST_ACT = (1U << 17), /* BIST activate FIS */
318 PHYEV_SIG_FIS = (1U << 16), /* signature FIS */
319 PHYEV_POOF = (1U << 12), /* phy ready from 1 -> 0 */
320 PHYEV_IU_BIG = (1U << 11), /* IU too long err */
321 PHYEV_IU_SMALL = (1U << 10), /* IU too short err */
322 PHYEV_UNK_TAG = (1U << 9), /* unknown tag */
323 PHYEV_BROAD_CH = (1U << 8), /* broadcast(CHANGE) */
324 PHYEV_COMWAKE = (1U << 7), /* COMWAKE rx'd */
325 PHYEV_PORT_SEL = (1U << 6), /* port selector present */
326 PHYEV_HARD_RST = (1U << 5), /* hard reset rx'd */
327 PHYEV_ID_TMOUT = (1U << 4), /* identify timeout */
328 PHYEV_ID_FAIL = (1U << 3), /* identify failed */
329 PHYEV_ID_DONE = (1U << 2), /* identify done */
330 PHYEV_HARD_RST_DONE = (1U << 1), /* hard reset done */
331 PHYEV_RDY_CH = (1U << 0), /* phy ready changed state */
332
333 /* MVS_PCS */
334 PCS_EN_SATA_REG_SHIFT = (16), /* Enable SATA Register Set */
335 PCS_EN_PORT_XMT_SHIFT = (12), /* Enable Port Transmit */
336 PCS_EN_PORT_XMT_SHIFT2 = (8), /* For 6480 */
337 PCS_SATA_RETRY = (1U << 8), /* retry ctl FIS on R_ERR */
338 PCS_RSP_RX_EN = (1U << 7), /* raw response rx */
339 PCS_SELF_CLEAR = (1U << 5), /* self-clearing int mode */
340 PCS_FIS_RX_EN = (1U << 4), /* FIS rx enable */
341 PCS_CMD_STOP_ERR = (1U << 3), /* cmd stop-on-err enable */
342 PCS_CMD_RST = (1U << 1), /* reset cmd issue */
343 PCS_CMD_EN = (1U << 0), /* enable cmd issue */
344
345 /* Port n Attached Device Info */
346 PORT_DEV_SSP_TRGT = (1U << 19),
347 PORT_DEV_SMP_TRGT = (1U << 18),
348 PORT_DEV_STP_TRGT = (1U << 17),
349 PORT_DEV_SSP_INIT = (1U << 11),
350 PORT_DEV_SMP_INIT = (1U << 10),
351 PORT_DEV_STP_INIT = (1U << 9),
352 PORT_PHY_ID_MASK = (0xFFU << 24),
353 PORT_DEV_TRGT_MASK = (0x7U << 17),
354 PORT_DEV_INIT_MASK = (0x7U << 9),
355 PORT_DEV_TYPE_MASK = (0x7U << 0),
356
357 /* Port n PHY Status */
358 PHY_RDY = (1U << 2),
359 PHY_DW_SYNC = (1U << 1),
360 PHY_OOB_DTCTD = (1U << 0),
361
362 /* VSR */
363 /* PHYMODE 6 (CDB) */
364 PHY_MODE6_LATECLK = (1U << 29), /* Lock Clock */
365 PHY_MODE6_DTL_SPEED = (1U << 27), /* Digital Loop Speed */
366 PHY_MODE6_FC_ORDER = (1U << 26), /* Fibre Channel Mode Order*/
367 PHY_MODE6_MUCNT_EN = (1U << 24), /* u Count Enable */
368 PHY_MODE6_SEL_MUCNT_LEN = (1U << 22), /* Training Length Select */
369 PHY_MODE6_SELMUPI = (1U << 20), /* Phase Multi Select (init) */
370 PHY_MODE6_SELMUPF = (1U << 18), /* Phase Multi Select (final) */
371 PHY_MODE6_SELMUFF = (1U << 16), /* Freq Loop Multi Sel(final) */
372 PHY_MODE6_SELMUFI = (1U << 14), /* Freq Loop Multi Sel(init) */
373 PHY_MODE6_FREEZE_LOOP = (1U << 12), /* Freeze Rx CDR Loop */
374 PHY_MODE6_INT_RXFOFFS = (1U << 3), /* Rx CDR Freq Loop Enable */
375 PHY_MODE6_FRC_RXFOFFS = (1U << 2), /* Initial Rx CDR Offset */
376 PHY_MODE6_STAU_0D8 = (1U << 1), /* Rx CDR Freq Loop Saturate */
377 PHY_MODE6_RXSAT_DIS = (1U << 0), /* Saturate Ctl */
378 };
379
380 enum mvs_info_flags {
381 MVF_MSI = (1U << 0), /* MSI is enabled */
382 MVF_PHY_PWR_FIX = (1U << 1), /* bug workaround */
383 };
384
385 enum sas_cmd_port_registers {
386 CMD_CMRST_OOB_DET = 0x100, /* COMRESET OOB detect register */
387 CMD_CMWK_OOB_DET = 0x104, /* COMWAKE OOB detect register */
388 CMD_CMSAS_OOB_DET = 0x108, /* COMSAS OOB detect register */
389 CMD_BRST_OOB_DET = 0x10c, /* burst OOB detect register */
390 CMD_OOB_SPACE = 0x110, /* OOB space control register */
391 CMD_OOB_BURST = 0x114, /* OOB burst control register */
392 CMD_PHY_TIMER = 0x118, /* PHY timer control register */
393 CMD_PHY_CONFIG0 = 0x11c, /* PHY config register 0 */
394 CMD_PHY_CONFIG1 = 0x120, /* PHY config register 1 */
395 CMD_SAS_CTL0 = 0x124, /* SAS control register 0 */
396 CMD_SAS_CTL1 = 0x128, /* SAS control register 1 */
397 CMD_SAS_CTL2 = 0x12c, /* SAS control register 2 */
398 CMD_SAS_CTL3 = 0x130, /* SAS control register 3 */
399 CMD_ID_TEST = 0x134, /* ID test register */
400 CMD_PL_TIMER = 0x138, /* PL timer register */
401 CMD_WD_TIMER = 0x13c, /* WD timer register */
402 CMD_PORT_SEL_COUNT = 0x140, /* port selector count register */
403 CMD_APP_MEM_CTL = 0x144, /* Application Memory Control */
404 CMD_XOR_MEM_CTL = 0x148, /* XOR Block Memory Control */
405 CMD_DMA_MEM_CTL = 0x14c, /* DMA Block Memory Control */
406 CMD_PORT_MEM_CTL0 = 0x150, /* Port Memory Control 0 */
407 CMD_PORT_MEM_CTL1 = 0x154, /* Port Memory Control 1 */
408 CMD_SATA_PORT_MEM_CTL0 = 0x158, /* SATA Port Memory Control 0 */
409 CMD_SATA_PORT_MEM_CTL1 = 0x15c, /* SATA Port Memory Control 1 */
410 CMD_XOR_MEM_BIST_CTL = 0x160, /* XOR Memory BIST Control */
411 CMD_XOR_MEM_BIST_STAT = 0x164, /* XOR Memroy BIST Status */
412 CMD_DMA_MEM_BIST_CTL = 0x168, /* DMA Memory BIST Control */
413 CMD_DMA_MEM_BIST_STAT = 0x16c, /* DMA Memory BIST Status */
414 CMD_PORT_MEM_BIST_CTL = 0x170, /* Port Memory BIST Control */
415 CMD_PORT_MEM_BIST_STAT0 = 0x174, /* Port Memory BIST Status 0 */
416 CMD_PORT_MEM_BIST_STAT1 = 0x178, /* Port Memory BIST Status 1 */
417 CMD_STP_MEM_BIST_CTL = 0x17c, /* STP Memory BIST Control */
418 CMD_STP_MEM_BIST_STAT0 = 0x180, /* STP Memory BIST Status 0 */
419 CMD_STP_MEM_BIST_STAT1 = 0x184, /* STP Memory BIST Status 1 */
420 CMD_RESET_COUNT = 0x188, /* Reset Count */
421 CMD_MONTR_DATA_SEL = 0x18C, /* Monitor Data/Select */
422 CMD_PLL_PHY_CONFIG = 0x190, /* PLL/PHY Configuration */
423 CMD_PHY_CTL = 0x194, /* PHY Control and Status */
424 CMD_PHY_TEST_COUNT0 = 0x198, /* Phy Test Count 0 */
425 CMD_PHY_TEST_COUNT1 = 0x19C, /* Phy Test Count 1 */
426 CMD_PHY_TEST_COUNT2 = 0x1A0, /* Phy Test Count 2 */
427 CMD_APP_ERR_CONFIG = 0x1A4, /* Application Error Configuration */
428 CMD_PND_FIFO_CTL0 = 0x1A8, /* Pending FIFO Control 0 */
429 CMD_HOST_CTL = 0x1AC, /* Host Control Status */
430 CMD_HOST_WR_DATA = 0x1B0, /* Host Write Data */
431 CMD_HOST_RD_DATA = 0x1B4, /* Host Read Data */
432 CMD_PHY_MODE_21 = 0x1B8, /* Phy Mode 21 */
433 CMD_SL_MODE0 = 0x1BC, /* SL Mode 0 */
434 CMD_SL_MODE1 = 0x1C0, /* SL Mode 1 */
435 CMD_PND_FIFO_CTL1 = 0x1C4, /* Pending FIFO Control 1 */
436 };
437
438 /* SAS/SATA configuration port registers, aka phy registers */
439 enum sas_sata_config_port_regs {
440 PHYR_IDENTIFY = 0x00, /* info for IDENTIFY frame */
441 PHYR_ADDR_LO = 0x04, /* my SAS address (low) */
442 PHYR_ADDR_HI = 0x08, /* my SAS address (high) */
443 PHYR_ATT_DEV_INFO = 0x0C, /* attached device info */
444 PHYR_ATT_ADDR_LO = 0x10, /* attached dev SAS addr (low) */
445 PHYR_ATT_ADDR_HI = 0x14, /* attached dev SAS addr (high) */
446 PHYR_SATA_CTL = 0x18, /* SATA control */
447 PHYR_PHY_STAT = 0x1C, /* PHY status */
448 PHYR_SATA_SIG0 = 0x20, /*port SATA signature FIS(Byte 0-3) */
449 PHYR_SATA_SIG1 = 0x24, /*port SATA signature FIS(Byte 4-7) */
450 PHYR_SATA_SIG2 = 0x28, /*port SATA signature FIS(Byte 8-11) */
451 PHYR_SATA_SIG3 = 0x2c, /*port SATA signature FIS(Byte 12-15) */
452 PHYR_R_ERR_COUNT = 0x30, /* port R_ERR count register */
453 PHYR_CRC_ERR_COUNT = 0x34, /* port CRC error count register */
454 PHYR_WIDE_PORT = 0x38, /* wide port participating */
455 PHYR_CURRENT0 = 0x80, /* current connection info 0 */
456 PHYR_CURRENT1 = 0x84, /* current connection info 1 */
457 PHYR_CURRENT2 = 0x88, /* current connection info 2 */
458 };
459
460 /* SAS/SATA Vendor Specific Port Registers */
461 enum sas_sata_vsp_regs {
462 VSR_PHY_STAT = 0x00, /* Phy Status */
463 VSR_PHY_MODE1 = 0x01, /* phy tx */
464 VSR_PHY_MODE2 = 0x02, /* tx scc */
465 VSR_PHY_MODE3 = 0x03, /* pll */
466 VSR_PHY_MODE4 = 0x04, /* VCO */
467 VSR_PHY_MODE5 = 0x05, /* Rx */
468 VSR_PHY_MODE6 = 0x06, /* CDR */
469 VSR_PHY_MODE7 = 0x07, /* Impedance */
470 VSR_PHY_MODE8 = 0x08, /* Voltage */
471 VSR_PHY_MODE9 = 0x09, /* Test */
472 VSR_PHY_MODE10 = 0x0A, /* Power */
473 VSR_PHY_MODE11 = 0x0B, /* Phy Mode */
474 VSR_PHY_VS0 = 0x0C, /* Vednor Specific 0 */
475 VSR_PHY_VS1 = 0x0D, /* Vednor Specific 1 */
476 };
477
478 enum pci_cfg_registers {
479 PCR_PHY_CTL = 0x40,
480 PCR_PHY_CTL2 = 0x90,
481 PCR_DEV_CTRL = 0xE8,
482 };
483
484 enum pci_cfg_register_bits {
485 PCTL_PWR_ON = (0xFU << 24),
486 PCTL_OFF = (0xFU << 12),
487 PRD_REQ_SIZE = (0x4000),
488 PRD_REQ_MASK = (0x00007000),
489 };
490
491 enum nvram_layout_offsets {
492 NVR_SIG = 0x00, /* 0xAA, 0x55 */
493 NVR_SAS_ADDR = 0x02, /* 8-byte SAS address */
494 };
495
496 enum chip_flavors {
497 chip_6320,
498 chip_6440,
499 chip_6480,
500 };
501
502 enum port_type {
503 PORT_TYPE_SAS = (1L << 1),
504 PORT_TYPE_SATA = (1L << 0),
505 };
506
507 /* Command Table Format */
508 enum ct_format {
509 /* SSP */
510 SSP_F_H = 0x00,
511 SSP_F_IU = 0x18,
512 SSP_F_MAX = 0x4D,
513 /* STP */
514 STP_CMD_FIS = 0x00,
515 STP_ATAPI_CMD = 0x40,
516 STP_F_MAX = 0x10,
517 /* SMP */
518 SMP_F_T = 0x00,
519 SMP_F_DEP = 0x01,
520 SMP_F_MAX = 0x101,
521 };
522
523 enum status_buffer {
524 SB_EIR_OFF = 0x00, /* Error Information Record */
525 SB_RFB_OFF = 0x08, /* Response Frame Buffer */
526 SB_RFB_MAX = 0x400, /* RFB size*/
527 };
528
529 enum error_info_rec {
530 CMD_ISS_STPD = (1U << 31), /* Cmd Issue Stopped */
531 CMD_PI_ERR = (1U << 30), /* Protection info error. see flags2 */
532 RSP_OVER = (1U << 29), /* rsp buffer overflow */
533 RETRY_LIM = (1U << 28), /* FIS/frame retry limit exceeded */
534 UNK_FIS = (1U << 27), /* unknown FIS */
535 DMA_TERM = (1U << 26), /* DMA terminate primitive rx'd */
536 SYNC_ERR = (1U << 25), /* SYNC rx'd during frame xmit */
537 TFILE_ERR = (1U << 24), /* SATA taskfile Error bit set */
538 R_ERR = (1U << 23), /* SATA returned R_ERR prim */
539 RD_OFS = (1U << 20), /* Read DATA frame invalid offset */
540 XFER_RDY_OFS = (1U << 19), /* XFER_RDY offset error */
541 UNEXP_XFER_RDY = (1U << 18), /* unexpected XFER_RDY error */
542 DATA_OVER_UNDER = (1U << 16), /* data overflow/underflow */
543 INTERLOCK = (1U << 15), /* interlock error */
544 NAK = (1U << 14), /* NAK rx'd */
545 ACK_NAK_TO = (1U << 13), /* ACK/NAK timeout */
546 CXN_CLOSED = (1U << 12), /* cxn closed w/out ack/nak */
547 OPEN_TO = (1U << 11), /* I_T nexus lost, open cxn timeout */
548 PATH_BLOCKED = (1U << 10), /* I_T nexus lost, pathway blocked */
549 NO_DEST = (1U << 9), /* I_T nexus lost, no destination */
550 STP_RES_BSY = (1U << 8), /* STP resources busy */
551 BREAK = (1U << 7), /* break received */
552 BAD_DEST = (1U << 6), /* bad destination */
553 BAD_PROTO = (1U << 5), /* protocol not supported */
554 BAD_RATE = (1U << 4), /* cxn rate not supported */
555 WRONG_DEST = (1U << 3), /* wrong destination error */
556 CREDIT_TO = (1U << 2), /* credit timeout */
557 WDOG_TO = (1U << 1), /* watchdog timeout */
558 BUF_PAR = (1U << 0), /* buffer parity error */
559 };
560
561 enum error_info_rec_2 {
562 SLOT_BSY_ERR = (1U << 31), /* Slot Busy Error */
563 GRD_CHK_ERR = (1U << 14), /* Guard Check Error */
564 APP_CHK_ERR = (1U << 13), /* Application Check error */
565 REF_CHK_ERR = (1U << 12), /* Reference Check Error */
566 USR_BLK_NM = (1U << 0), /* User Block Number */
567 };
568
569 struct mvs_chip_info {
570 u32 n_phy;
571 u32 srs_sz;
572 u32 slot_width;
573 };
574
575 struct mvs_err_info {
576 __le32 flags;
577 __le32 flags2;
578 };
579
580 struct mvs_prd {
581 __le64 addr; /* 64-bit buffer address */
582 __le32 reserved;
583 __le32 len; /* 16-bit length */
584 };
585
586 struct mvs_cmd_hdr {
587 __le32 flags; /* PRD tbl len; SAS, SATA ctl */
588 __le32 lens; /* cmd, max resp frame len */
589 __le32 tags; /* targ port xfer tag; tag */
590 __le32 data_len; /* data xfer len */
591 __le64 cmd_tbl; /* command table address */
592 __le64 open_frame; /* open addr frame address */
593 __le64 status_buf; /* status buffer address */
594 __le64 prd_tbl; /* PRD tbl address */
595 __le32 reserved[4];
596 };
597
598 struct mvs_port {
599 struct asd_sas_port sas_port;
600 u8 port_attached;
601 u8 taskfileset;
602 u8 wide_port_phymap;
603 struct list_head list;
604 };
605
606 struct mvs_phy {
607 struct mvs_port *port;
608 struct asd_sas_phy sas_phy;
609 struct sas_identify identify;
610 struct scsi_device *sdev;
611 u64 dev_sas_addr;
612 u64 att_dev_sas_addr;
613 u32 att_dev_info;
614 u32 dev_info;
615 u32 phy_type;
616 u32 phy_status;
617 u32 irq_status;
618 u32 frame_rcvd_size;
619 u8 frame_rcvd[32];
620 u8 phy_attached;
621 enum sas_linkrate minimum_linkrate;
622 enum sas_linkrate maximum_linkrate;
623 };
624
625 struct mvs_slot_info {
626 struct list_head list;
627 struct sas_task *task;
628 u32 n_elem;
629 u32 tx;
630
631 /* DMA buffer for storing cmd tbl, open addr frame, status buffer,
632 * and PRD table
633 */
634 void *buf;
635 dma_addr_t buf_dma;
636 #if _MV_DUMP
637 u32 cmd_size;
638 #endif
639
640 void *response;
641 struct mvs_port *port;
642 };
643
644 struct mvs_info {
645 unsigned long flags;
646
647 spinlock_t lock; /* host-wide lock */
648 struct pci_dev *pdev; /* our device */
649 void __iomem *regs; /* enhanced mode registers */
650 void __iomem *peri_regs; /* peripheral registers */
651
652 u8 sas_addr[SAS_ADDR_SIZE];
653 struct sas_ha_struct sas; /* SCSI/SAS glue */
654 struct Scsi_Host *shost;
655
656 __le32 *tx; /* TX (delivery) DMA ring */
657 dma_addr_t tx_dma;
658 u32 tx_prod; /* cached next-producer idx */
659
660 __le32 *rx; /* RX (completion) DMA ring */
661 dma_addr_t rx_dma;
662 u32 rx_cons; /* RX consumer idx */
663
664 __le32 *rx_fis; /* RX'd FIS area */
665 dma_addr_t rx_fis_dma;
666
667 struct mvs_cmd_hdr *slot; /* DMA command header slots */
668 dma_addr_t slot_dma;
669
670 const struct mvs_chip_info *chip;
671
672 u8 tags[MVS_SLOTS];
673 struct mvs_slot_info slot_info[MVS_SLOTS];
674 /* further per-slot information */
675 struct mvs_phy phy[MVS_MAX_PHYS];
676 struct mvs_port port[MVS_MAX_PHYS];
677 #ifdef MVS_USE_TASKLET
678 struct tasklet_struct tasklet;
679 #endif
680 };
681
682 static int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
683 void *funcdata);
684 static u32 mvs_read_phy_ctl(struct mvs_info *mvi, u32 port);
685 static void mvs_write_phy_ctl(struct mvs_info *mvi, u32 port, u32 val);
686 static u32 mvs_read_port_irq_stat(struct mvs_info *mvi, u32 port);
687 static void mvs_write_port_irq_stat(struct mvs_info *mvi, u32 port, u32 val);
688 static void mvs_write_port_irq_mask(struct mvs_info *mvi, u32 port, u32 val);
689 static u32 mvs_read_port_irq_mask(struct mvs_info *mvi, u32 port);
690
691 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i);
692 static void mvs_detect_porttype(struct mvs_info *mvi, int i);
693 static void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st);
694 static void mvs_release_task(struct mvs_info *mvi, int phy_no);
695
696 static int mvs_scan_finished(struct Scsi_Host *, unsigned long);
697 static void mvs_scan_start(struct Scsi_Host *);
698 static int mvs_slave_configure(struct scsi_device *sdev);
699
700 static struct scsi_transport_template *mvs_stt;
701
702 static const struct mvs_chip_info mvs_chips[] = {
703 [chip_6320] = { 2, 16, 9 },
704 [chip_6440] = { 4, 16, 9 },
705 [chip_6480] = { 8, 32, 10 },
706 };
707
708 static struct scsi_host_template mvs_sht = {
709 .module = THIS_MODULE,
710 .name = DRV_NAME,
711 .queuecommand = sas_queuecommand,
712 .target_alloc = sas_target_alloc,
713 .slave_configure = mvs_slave_configure,
714 .slave_destroy = sas_slave_destroy,
715 .scan_finished = mvs_scan_finished,
716 .scan_start = mvs_scan_start,
717 .change_queue_depth = sas_change_queue_depth,
718 .change_queue_type = sas_change_queue_type,
719 .bios_param = sas_bios_param,
720 .can_queue = 1,
721 .cmd_per_lun = 1,
722 .this_id = -1,
723 .sg_tablesize = SG_ALL,
724 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
725 .use_clustering = ENABLE_CLUSTERING,
726 .eh_device_reset_handler = sas_eh_device_reset_handler,
727 .eh_bus_reset_handler = sas_eh_bus_reset_handler,
728 .slave_alloc = sas_slave_alloc,
729 .target_destroy = sas_target_destroy,
730 .ioctl = sas_ioctl,
731 };
732
733 static void mvs_hexdump(u32 size, u8 *data, u32 baseaddr)
734 {
735 u32 i;
736 u32 run;
737 u32 offset;
738
739 offset = 0;
740 while (size) {
741 printk("%08X : ", baseaddr + offset);
742 if (size >= 16)
743 run = 16;
744 else
745 run = size;
746 size -= run;
747 for (i = 0; i < 16; i++) {
748 if (i < run)
749 printk("%02X ", (u32)data[i]);
750 else
751 printk(" ");
752 }
753 printk(": ");
754 for (i = 0; i < run; i++)
755 printk("%c", isalnum(data[i]) ? data[i] : '.');
756 printk("\n");
757 data = &data[16];
758 offset += run;
759 }
760 printk("\n");
761 }
762
763 #if _MV_DUMP
764 static void mvs_hba_sb_dump(struct mvs_info *mvi, u32 tag,
765 enum sas_protocol proto)
766 {
767 u32 offset;
768 struct pci_dev *pdev = mvi->pdev;
769 struct mvs_slot_info *slot = &mvi->slot_info[tag];
770
771 offset = slot->cmd_size + MVS_OAF_SZ +
772 sizeof(struct mvs_prd) * slot->n_elem;
773 dev_printk(KERN_DEBUG, &pdev->dev, "+---->Status buffer[%d] :\n",
774 tag);
775 mvs_hexdump(32, (u8 *) slot->response,
776 (u32) slot->buf_dma + offset);
777 }
778 #endif
779
780 static void mvs_hba_memory_dump(struct mvs_info *mvi, u32 tag,
781 enum sas_protocol proto)
782 {
783 #if _MV_DUMP
784 u32 sz, w_ptr;
785 u64 addr;
786 void __iomem *regs = mvi->regs;
787 struct pci_dev *pdev = mvi->pdev;
788 struct mvs_slot_info *slot = &mvi->slot_info[tag];
789
790 /*Delivery Queue */
791 sz = mr32(TX_CFG) & TX_RING_SZ_MASK;
792 w_ptr = slot->tx;
793 addr = mr32(TX_HI) << 16 << 16 | mr32(TX_LO);
794 dev_printk(KERN_DEBUG, &pdev->dev,
795 "Delivery Queue Size=%04d , WRT_PTR=%04X\n", sz, w_ptr);
796 dev_printk(KERN_DEBUG, &pdev->dev,
797 "Delivery Queue Base Address=0x%llX (PA)"
798 "(tx_dma=0x%llX), Entry=%04d\n",
799 addr, mvi->tx_dma, w_ptr);
800 mvs_hexdump(sizeof(u32), (u8 *)(&mvi->tx[mvi->tx_prod]),
801 (u32) mvi->tx_dma + sizeof(u32) * w_ptr);
802 /*Command List */
803 addr = mvi->slot_dma;
804 dev_printk(KERN_DEBUG, &pdev->dev,
805 "Command List Base Address=0x%llX (PA)"
806 "(slot_dma=0x%llX), Header=%03d\n",
807 addr, slot->buf_dma, tag);
808 dev_printk(KERN_DEBUG, &pdev->dev, "Command Header[%03d]:\n", tag);
809 /*mvs_cmd_hdr */
810 mvs_hexdump(sizeof(struct mvs_cmd_hdr), (u8 *)(&mvi->slot[tag]),
811 (u32) mvi->slot_dma + tag * sizeof(struct mvs_cmd_hdr));
812 /*1.command table area */
813 dev_printk(KERN_DEBUG, &pdev->dev, "+---->Command Table :\n");
814 mvs_hexdump(slot->cmd_size, (u8 *) slot->buf, (u32) slot->buf_dma);
815 /*2.open address frame area */
816 dev_printk(KERN_DEBUG, &pdev->dev, "+---->Open Address Frame :\n");
817 mvs_hexdump(MVS_OAF_SZ, (u8 *) slot->buf + slot->cmd_size,
818 (u32) slot->buf_dma + slot->cmd_size);
819 /*3.status buffer */
820 mvs_hba_sb_dump(mvi, tag, proto);
821 /*4.PRD table */
822 dev_printk(KERN_DEBUG, &pdev->dev, "+---->PRD table :\n");
823 mvs_hexdump(sizeof(struct mvs_prd) * slot->n_elem,
824 (u8 *) slot->buf + slot->cmd_size + MVS_OAF_SZ,
825 (u32) slot->buf_dma + slot->cmd_size + MVS_OAF_SZ);
826 #endif
827 }
828
829 static void mvs_hba_cq_dump(struct mvs_info *mvi)
830 {
831 #if (_MV_DUMP > 2)
832 u64 addr;
833 void __iomem *regs = mvi->regs;
834 struct pci_dev *pdev = mvi->pdev;
835 u32 entry = mvi->rx_cons + 1;
836 u32 rx_desc = le32_to_cpu(mvi->rx[entry]);
837
838 /*Completion Queue */
839 addr = mr32(RX_HI) << 16 << 16 | mr32(RX_LO);
840 dev_printk(KERN_DEBUG, &pdev->dev, "Completion Task = 0x%p\n",
841 mvi->slot_info[rx_desc & RXQ_SLOT_MASK].task);
842 dev_printk(KERN_DEBUG, &pdev->dev,
843 "Completion List Base Address=0x%llX (PA), "
844 "CQ_Entry=%04d, CQ_WP=0x%08X\n",
845 addr, entry - 1, mvi->rx[0]);
846 mvs_hexdump(sizeof(u32), (u8 *)(&rx_desc),
847 mvi->rx_dma + sizeof(u32) * entry);
848 #endif
849 }
850
851 static void mvs_hba_interrupt_enable(struct mvs_info *mvi)
852 {
853 void __iomem *regs = mvi->regs;
854 u32 tmp;
855
856 tmp = mr32(GBL_CTL);
857
858 mw32(GBL_CTL, tmp | INT_EN);
859 }
860
861 static void mvs_hba_interrupt_disable(struct mvs_info *mvi)
862 {
863 void __iomem *regs = mvi->regs;
864 u32 tmp;
865
866 tmp = mr32(GBL_CTL);
867
868 mw32(GBL_CTL, tmp & ~INT_EN);
869 }
870
871 static int mvs_int_rx(struct mvs_info *mvi, bool self_clear);
872
873 /* move to PCI layer or libata core? */
874 static int pci_go_64(struct pci_dev *pdev)
875 {
876 int rc;
877
878 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
879 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
880 if (rc) {
881 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
882 if (rc) {
883 dev_printk(KERN_ERR, &pdev->dev,
884 "64-bit DMA enable failed\n");
885 return rc;
886 }
887 }
888 } else {
889 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
890 if (rc) {
891 dev_printk(KERN_ERR, &pdev->dev,
892 "32-bit DMA enable failed\n");
893 return rc;
894 }
895 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
896 if (rc) {
897 dev_printk(KERN_ERR, &pdev->dev,
898 "32-bit consistent DMA enable failed\n");
899 return rc;
900 }
901 }
902
903 return rc;
904 }
905
906 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
907 {
908 if (task->lldd_task) {
909 struct mvs_slot_info *slot;
910 slot = (struct mvs_slot_info *) task->lldd_task;
911 *tag = slot - mvi->slot_info;
912 return 1;
913 }
914 return 0;
915 }
916
917 static void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
918 {
919 void *bitmap = (void *) &mvi->tags;
920 clear_bit(tag, bitmap);
921 }
922
923 static void mvs_tag_free(struct mvs_info *mvi, u32 tag)
924 {
925 mvs_tag_clear(mvi, tag);
926 }
927
928 static void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
929 {
930 void *bitmap = (void *) &mvi->tags;
931 set_bit(tag, bitmap);
932 }
933
934 static int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
935 {
936 unsigned int index, tag;
937 void *bitmap = (void *) &mvi->tags;
938
939 index = find_first_zero_bit(bitmap, MVS_SLOTS);
940 tag = index;
941 if (tag >= MVS_SLOTS)
942 return -SAS_QUEUE_FULL;
943 mvs_tag_set(mvi, tag);
944 *tag_out = tag;
945 return 0;
946 }
947
948 static void mvs_tag_init(struct mvs_info *mvi)
949 {
950 int i;
951 for (i = 0; i < MVS_SLOTS; ++i)
952 mvs_tag_clear(mvi, i);
953 }
954
955 #ifndef MVS_DISABLE_NVRAM
956 static int mvs_eep_read(void __iomem *regs, u32 addr, u32 *data)
957 {
958 int timeout = 1000;
959
960 if (addr & ~SPI_ADDR_MASK)
961 return -EINVAL;
962
963 writel(addr, regs + SPI_CMD);
964 writel(TWSI_RD, regs + SPI_CTL);
965
966 while (timeout-- > 0) {
967 if (readl(regs + SPI_CTL) & TWSI_RDY) {
968 *data = readl(regs + SPI_DATA);
969 return 0;
970 }
971
972 udelay(10);
973 }
974
975 return -EBUSY;
976 }
977
978 static int mvs_eep_read_buf(void __iomem *regs, u32 addr,
979 void *buf, u32 buflen)
980 {
981 u32 addr_end, tmp_addr, i, j;
982 u32 tmp = 0;
983 int rc;
984 u8 *tmp8, *buf8 = buf;
985
986 addr_end = addr + buflen;
987 tmp_addr = ALIGN(addr, 4);
988 if (addr > 0xff)
989 return -EINVAL;
990
991 j = addr & 0x3;
992 if (j) {
993 rc = mvs_eep_read(regs, tmp_addr, &tmp);
994 if (rc)
995 return rc;
996
997 tmp8 = (u8 *)&tmp;
998 for (i = j; i < 4; i++)
999 *buf8++ = tmp8[i];
1000
1001 tmp_addr += 4;
1002 }
1003
1004 for (j = ALIGN(addr_end, 4); tmp_addr < j; tmp_addr += 4) {
1005 rc = mvs_eep_read(regs, tmp_addr, &tmp);
1006 if (rc)
1007 return rc;
1008
1009 memcpy(buf8, &tmp, 4);
1010 buf8 += 4;
1011 }
1012
1013 if (tmp_addr < addr_end) {
1014 rc = mvs_eep_read(regs, tmp_addr, &tmp);
1015 if (rc)
1016 return rc;
1017
1018 tmp8 = (u8 *)&tmp;
1019 j = addr_end - tmp_addr;
1020 for (i = 0; i < j; i++)
1021 *buf8++ = tmp8[i];
1022
1023 tmp_addr += 4;
1024 }
1025
1026 return 0;
1027 }
1028 #endif
1029
1030 static int mvs_nvram_read(struct mvs_info *mvi, u32 addr,
1031 void *buf, u32 buflen)
1032 {
1033 #ifndef MVS_DISABLE_NVRAM
1034 void __iomem *regs = mvi->regs;
1035 int rc, i;
1036 u32 sum;
1037 u8 hdr[2], *tmp;
1038 const char *msg;
1039
1040 rc = mvs_eep_read_buf(regs, addr, &hdr, 2);
1041 if (rc) {
1042 msg = "nvram hdr read failed";
1043 goto err_out;
1044 }
1045 rc = mvs_eep_read_buf(regs, addr + 2, buf, buflen);
1046 if (rc) {
1047 msg = "nvram read failed";
1048 goto err_out;
1049 }
1050
1051 if (hdr[0] != 0x5A) {
1052 /* entry id */
1053 msg = "invalid nvram entry id";
1054 rc = -ENOENT;
1055 goto err_out;
1056 }
1057
1058 tmp = buf;
1059 sum = ((u32)hdr[0]) + ((u32)hdr[1]);
1060 for (i = 0; i < buflen; i++)
1061 sum += ((u32)tmp[i]);
1062
1063 if (sum) {
1064 msg = "nvram checksum failure";
1065 rc = -EILSEQ;
1066 goto err_out;
1067 }
1068
1069 return 0;
1070
1071 err_out:
1072 dev_printk(KERN_ERR, &mvi->pdev->dev, "%s", msg);
1073 return rc;
1074 #else
1075 /* FIXME , For SAS target mode */
1076 memcpy(buf, "\x50\x05\x04\x30\x11\xab\x00\x00", 8);
1077 return 0;
1078 #endif
1079 }
1080
1081 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i)
1082 {
1083 struct mvs_phy *phy = &mvi->phy[i];
1084 struct asd_sas_phy *sas_phy = mvi->sas.sas_phy[i];
1085
1086 if (!phy->phy_attached)
1087 return;
1088
1089 if (sas_phy->phy) {
1090 struct sas_phy *sphy = sas_phy->phy;
1091
1092 sphy->negotiated_linkrate = sas_phy->linkrate;
1093 sphy->minimum_linkrate = phy->minimum_linkrate;
1094 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
1095 sphy->maximum_linkrate = phy->maximum_linkrate;
1096 sphy->maximum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS;
1097 }
1098
1099 if (phy->phy_type & PORT_TYPE_SAS) {
1100 struct sas_identify_frame *id;
1101
1102 id = (struct sas_identify_frame *)phy->frame_rcvd;
1103 id->dev_type = phy->identify.device_type;
1104 id->initiator_bits = SAS_PROTOCOL_ALL;
1105 id->target_bits = phy->identify.target_port_protocols;
1106 } else if (phy->phy_type & PORT_TYPE_SATA) {
1107 /* TODO */
1108 }
1109 mvi->sas.sas_phy[i]->frame_rcvd_size = phy->frame_rcvd_size;
1110 mvi->sas.notify_port_event(mvi->sas.sas_phy[i],
1111 PORTE_BYTES_DMAED);
1112 }
1113
1114 static int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
1115 {
1116 /* give the phy enabling interrupt event time to come in (1s
1117 * is empirically about all it takes) */
1118 if (time < HZ)
1119 return 0;
1120 /* Wait for discovery to finish */
1121 scsi_flush_work(shost);
1122 return 1;
1123 }
1124
1125 static void mvs_scan_start(struct Scsi_Host *shost)
1126 {
1127 int i;
1128 struct mvs_info *mvi = SHOST_TO_SAS_HA(shost)->lldd_ha;
1129
1130 for (i = 0; i < mvi->chip->n_phy; ++i) {
1131 mvs_bytes_dmaed(mvi, i);
1132 }
1133 }
1134
1135 static int mvs_slave_configure(struct scsi_device *sdev)
1136 {
1137 struct domain_device *dev = sdev_to_domain_dev(sdev);
1138 int ret = sas_slave_configure(sdev);
1139
1140 if (ret)
1141 return ret;
1142
1143 if (dev_is_sata(dev)) {
1144 /* struct ata_port *ap = dev->sata_dev.ap; */
1145 /* struct ata_device *adev = ap->link.device; */
1146
1147 /* clamp at no NCQ for the time being */
1148 /* adev->flags |= ATA_DFLAG_NCQ_OFF; */
1149 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, 1);
1150 }
1151 return 0;
1152 }
1153
1154 static void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
1155 {
1156 struct pci_dev *pdev = mvi->pdev;
1157 struct sas_ha_struct *sas_ha = &mvi->sas;
1158 struct mvs_phy *phy = &mvi->phy[phy_no];
1159 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1160
1161 phy->irq_status = mvs_read_port_irq_stat(mvi, phy_no);
1162 /*
1163 * events is port event now ,
1164 * we need check the interrupt status which belongs to per port.
1165 */
1166 dev_printk(KERN_DEBUG, &pdev->dev,
1167 "Port %d Event = %X\n",
1168 phy_no, phy->irq_status);
1169
1170 if (phy->irq_status & (PHYEV_POOF | PHYEV_DEC_ERR)) {
1171 mvs_release_task(mvi, phy_no);
1172 if (!mvs_is_phy_ready(mvi, phy_no)) {
1173 sas_phy_disconnected(sas_phy);
1174 sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
1175 dev_printk(KERN_INFO, &pdev->dev,
1176 "Port %d Unplug Notice\n", phy_no);
1177
1178 } else
1179 mvs_phy_control(sas_phy, PHY_FUNC_LINK_RESET, NULL);
1180 }
1181 if (!(phy->irq_status & PHYEV_DEC_ERR)) {
1182 if (phy->irq_status & PHYEV_COMWAKE) {
1183 u32 tmp = mvs_read_port_irq_mask(mvi, phy_no);
1184 mvs_write_port_irq_mask(mvi, phy_no,
1185 tmp | PHYEV_SIG_FIS);
1186 }
1187 if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
1188 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
1189 if (phy->phy_status) {
1190 mvs_detect_porttype(mvi, phy_no);
1191
1192 if (phy->phy_type & PORT_TYPE_SATA) {
1193 u32 tmp = mvs_read_port_irq_mask(mvi,
1194 phy_no);
1195 tmp &= ~PHYEV_SIG_FIS;
1196 mvs_write_port_irq_mask(mvi,
1197 phy_no, tmp);
1198 }
1199
1200 mvs_update_phyinfo(mvi, phy_no, 0);
1201 sas_ha->notify_phy_event(sas_phy,
1202 PHYE_OOB_DONE);
1203 mvs_bytes_dmaed(mvi, phy_no);
1204 } else {
1205 dev_printk(KERN_DEBUG, &pdev->dev,
1206 "plugin interrupt but phy is gone\n");
1207 mvs_phy_control(sas_phy, PHY_FUNC_LINK_RESET,
1208 NULL);
1209 }
1210 } else if (phy->irq_status & PHYEV_BROAD_CH) {
1211 mvs_release_task(mvi, phy_no);
1212 sas_ha->notify_port_event(sas_phy,
1213 PORTE_BROADCAST_RCVD);
1214 }
1215 }
1216 mvs_write_port_irq_stat(mvi, phy_no, phy->irq_status);
1217 }
1218
1219 static void mvs_int_sata(struct mvs_info *mvi)
1220 {
1221 u32 tmp;
1222 void __iomem *regs = mvi->regs;
1223 tmp = mr32(INT_STAT_SRS);
1224 mw32(INT_STAT_SRS, tmp & 0xFFFF);
1225 }
1226
1227 static void mvs_slot_reset(struct mvs_info *mvi, struct sas_task *task,
1228 u32 slot_idx)
1229 {
1230 void __iomem *regs = mvi->regs;
1231 struct domain_device *dev = task->dev;
1232 struct asd_sas_port *sas_port = dev->port;
1233 struct mvs_port *port = mvi->slot_info[slot_idx].port;
1234 u32 reg_set, phy_mask;
1235
1236 if (!sas_protocol_ata(task->task_proto)) {
1237 reg_set = 0;
1238 phy_mask = (port->wide_port_phymap) ? port->wide_port_phymap :
1239 sas_port->phy_mask;
1240 } else {
1241 reg_set = port->taskfileset;
1242 phy_mask = sas_port->phy_mask;
1243 }
1244 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | slot_idx |
1245 (TXQ_CMD_SLOT_RESET << TXQ_CMD_SHIFT) |
1246 (phy_mask << TXQ_PHY_SHIFT) |
1247 (reg_set << TXQ_SRS_SHIFT));
1248
1249 mw32(TX_PROD_IDX, mvi->tx_prod);
1250 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
1251 }
1252
1253 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1254 u32 slot_idx, int err)
1255 {
1256 struct mvs_port *port = mvi->slot_info[slot_idx].port;
1257 struct task_status_struct *tstat = &task->task_status;
1258 struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1259 int stat = SAM_GOOD;
1260
1261 resp->frame_len = sizeof(struct dev_to_host_fis);
1262 memcpy(&resp->ending_fis[0],
1263 SATA_RECEIVED_D2H_FIS(port->taskfileset),
1264 sizeof(struct dev_to_host_fis));
1265 tstat->buf_valid_size = sizeof(*resp);
1266 if (unlikely(err))
1267 stat = SAS_PROTO_RESPONSE;
1268 return stat;
1269 }
1270
1271 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
1272 {
1273 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1274 mvs_tag_clear(mvi, slot_idx);
1275 }
1276
1277 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
1278 struct mvs_slot_info *slot, u32 slot_idx)
1279 {
1280 if (!sas_protocol_ata(task->task_proto))
1281 if (slot->n_elem)
1282 pci_unmap_sg(mvi->pdev, task->scatter,
1283 slot->n_elem, task->data_dir);
1284
1285 switch (task->task_proto) {
1286 case SAS_PROTOCOL_SMP:
1287 pci_unmap_sg(mvi->pdev, &task->smp_task.smp_resp, 1,
1288 PCI_DMA_FROMDEVICE);
1289 pci_unmap_sg(mvi->pdev, &task->smp_task.smp_req, 1,
1290 PCI_DMA_TODEVICE);
1291 break;
1292
1293 case SAS_PROTOCOL_SATA:
1294 case SAS_PROTOCOL_STP:
1295 case SAS_PROTOCOL_SSP:
1296 default:
1297 /* do nothing */
1298 break;
1299 }
1300 list_del(&slot->list);
1301 task->lldd_task = NULL;
1302 slot->task = NULL;
1303 slot->port = NULL;
1304 }
1305
1306 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1307 u32 slot_idx)
1308 {
1309 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1310 u32 err_dw0 = le32_to_cpu(*(u32 *) (slot->response));
1311 u32 err_dw1 = le32_to_cpu(*(u32 *) (slot->response + 4));
1312 int stat = SAM_CHECK_COND;
1313
1314 if (err_dw1 & SLOT_BSY_ERR) {
1315 stat = SAS_QUEUE_FULL;
1316 mvs_slot_reset(mvi, task, slot_idx);
1317 }
1318 switch (task->task_proto) {
1319 case SAS_PROTOCOL_SSP:
1320 break;
1321 case SAS_PROTOCOL_SMP:
1322 break;
1323 case SAS_PROTOCOL_SATA:
1324 case SAS_PROTOCOL_STP:
1325 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1326 if (err_dw0 & TFILE_ERR)
1327 stat = mvs_sata_done(mvi, task, slot_idx, 1);
1328 break;
1329 default:
1330 break;
1331 }
1332
1333 mvs_hexdump(16, (u8 *) slot->response, 0);
1334 return stat;
1335 }
1336
1337 static int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1338 {
1339 u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1340 struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1341 struct sas_task *task = slot->task;
1342 struct task_status_struct *tstat;
1343 struct mvs_port *port;
1344 bool aborted;
1345 void *to;
1346
1347 if (unlikely(!task || !task->lldd_task))
1348 return -1;
1349
1350 mvs_hba_cq_dump(mvi);
1351
1352 spin_lock(&task->task_state_lock);
1353 aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1354 if (!aborted) {
1355 task->task_state_flags &=
1356 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1357 task->task_state_flags |= SAS_TASK_STATE_DONE;
1358 }
1359 spin_unlock(&task->task_state_lock);
1360
1361 if (aborted) {
1362 mvs_slot_task_free(mvi, task, slot, slot_idx);
1363 mvs_slot_free(mvi, rx_desc);
1364 return -1;
1365 }
1366
1367 port = slot->port;
1368 tstat = &task->task_status;
1369 memset(tstat, 0, sizeof(*tstat));
1370 tstat->resp = SAS_TASK_COMPLETE;
1371
1372 if (unlikely(!port->port_attached || flags)) {
1373 mvs_slot_err(mvi, task, slot_idx);
1374 if (!sas_protocol_ata(task->task_proto))
1375 tstat->stat = SAS_PHY_DOWN;
1376 goto out;
1377 }
1378
1379 /* error info record present */
1380 if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
1381 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1382 goto out;
1383 }
1384
1385 switch (task->task_proto) {
1386 case SAS_PROTOCOL_SSP:
1387 /* hw says status == 0, datapres == 0 */
1388 if (rx_desc & RXQ_GOOD) {
1389 tstat->stat = SAM_GOOD;
1390 tstat->resp = SAS_TASK_COMPLETE;
1391 }
1392 /* response frame present */
1393 else if (rx_desc & RXQ_RSP) {
1394 struct ssp_response_iu *iu =
1395 slot->response + sizeof(struct mvs_err_info);
1396 sas_ssp_task_response(&mvi->pdev->dev, task, iu);
1397 }
1398
1399 /* should never happen? */
1400 else
1401 tstat->stat = SAM_CHECK_COND;
1402 break;
1403
1404 case SAS_PROTOCOL_SMP: {
1405 struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1406 tstat->stat = SAM_GOOD;
1407 to = kmap_atomic(sg_page(sg_resp), KM_IRQ0);
1408 memcpy(to + sg_resp->offset,
1409 slot->response + sizeof(struct mvs_err_info),
1410 sg_dma_len(sg_resp));
1411 kunmap_atomic(to, KM_IRQ0);
1412 break;
1413 }
1414
1415 case SAS_PROTOCOL_SATA:
1416 case SAS_PROTOCOL_STP:
1417 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1418 tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1419 break;
1420 }
1421
1422 default:
1423 tstat->stat = SAM_CHECK_COND;
1424 break;
1425 }
1426
1427 out:
1428 mvs_slot_task_free(mvi, task, slot, slot_idx);
1429 if (unlikely(tstat->stat != SAS_QUEUE_FULL))
1430 mvs_slot_free(mvi, rx_desc);
1431
1432 spin_unlock(&mvi->lock);
1433 task->task_done(task);
1434 spin_lock(&mvi->lock);
1435 return tstat->stat;
1436 }
1437
1438 static void mvs_release_task(struct mvs_info *mvi, int phy_no)
1439 {
1440 struct list_head *pos, *n;
1441 struct mvs_slot_info *slot;
1442 struct mvs_phy *phy = &mvi->phy[phy_no];
1443 struct mvs_port *port = phy->port;
1444 u32 rx_desc;
1445
1446 if (!port)
1447 return;
1448
1449 list_for_each_safe(pos, n, &port->list) {
1450 slot = container_of(pos, struct mvs_slot_info, list);
1451 rx_desc = (u32) (slot - mvi->slot_info);
1452 mvs_slot_complete(mvi, rx_desc, 1);
1453 }
1454 }
1455
1456 static void mvs_int_full(struct mvs_info *mvi)
1457 {
1458 void __iomem *regs = mvi->regs;
1459 u32 tmp, stat;
1460 int i;
1461
1462 stat = mr32(INT_STAT);
1463
1464 mvs_int_rx(mvi, false);
1465
1466 for (i = 0; i < MVS_MAX_PORTS; i++) {
1467 tmp = (stat >> i) & (CINT_PORT | CINT_PORT_STOPPED);
1468 if (tmp)
1469 mvs_int_port(mvi, i, tmp);
1470 }
1471
1472 if (stat & CINT_SRS)
1473 mvs_int_sata(mvi);
1474
1475 mw32(INT_STAT, stat);
1476 }
1477
1478 static int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
1479 {
1480 void __iomem *regs = mvi->regs;
1481 u32 rx_prod_idx, rx_desc;
1482 bool attn = false;
1483 struct pci_dev *pdev = mvi->pdev;
1484
1485 /* the first dword in the RX ring is special: it contains
1486 * a mirror of the hardware's RX producer index, so that
1487 * we don't have to stall the CPU reading that register.
1488 * The actual RX ring is offset by one dword, due to this.
1489 */
1490 rx_prod_idx = mvi->rx_cons;
1491 mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
1492 if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
1493 return 0;
1494
1495 /* The CMPL_Q may come late, read from register and try again
1496 * note: if coalescing is enabled,
1497 * it will need to read from register every time for sure
1498 */
1499 if (mvi->rx_cons == rx_prod_idx)
1500 mvi->rx_cons = mr32(RX_CONS_IDX) & RX_RING_SZ_MASK;
1501
1502 if (mvi->rx_cons == rx_prod_idx)
1503 return 0;
1504
1505 while (mvi->rx_cons != rx_prod_idx) {
1506
1507 /* increment our internal RX consumer pointer */
1508 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
1509
1510 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
1511
1512 if (likely(rx_desc & RXQ_DONE))
1513 mvs_slot_complete(mvi, rx_desc, 0);
1514 if (rx_desc & RXQ_ATTN) {
1515 attn = true;
1516 dev_printk(KERN_DEBUG, &pdev->dev, "ATTN %X\n",
1517 rx_desc);
1518 } else if (rx_desc & RXQ_ERR) {
1519 if (!(rx_desc & RXQ_DONE))
1520 mvs_slot_complete(mvi, rx_desc, 0);
1521 dev_printk(KERN_DEBUG, &pdev->dev, "RXQ_ERR %X\n",
1522 rx_desc);
1523 } else if (rx_desc & RXQ_SLOT_RESET) {
1524 dev_printk(KERN_DEBUG, &pdev->dev, "Slot reset[%X]\n",
1525 rx_desc);
1526 mvs_slot_free(mvi, rx_desc);
1527 }
1528 }
1529
1530 if (attn && self_clear)
1531 mvs_int_full(mvi);
1532
1533 return 0;
1534 }
1535
1536 #ifdef MVS_USE_TASKLET
1537 static void mvs_tasklet(unsigned long data)
1538 {
1539 struct mvs_info *mvi = (struct mvs_info *) data;
1540 unsigned long flags;
1541
1542 spin_lock_irqsave(&mvi->lock, flags);
1543
1544 #ifdef MVS_DISABLE_MSI
1545 mvs_int_full(mvi);
1546 #else
1547 mvs_int_rx(mvi, true);
1548 #endif
1549 spin_unlock_irqrestore(&mvi->lock, flags);
1550 }
1551 #endif
1552
1553 static irqreturn_t mvs_interrupt(int irq, void *opaque)
1554 {
1555 struct mvs_info *mvi = opaque;
1556 void __iomem *regs = mvi->regs;
1557 u32 stat;
1558
1559 stat = mr32(GBL_INT_STAT);
1560
1561 if (stat == 0 || stat == 0xffffffff)
1562 return IRQ_NONE;
1563
1564 /* clear CMD_CMPLT ASAP */
1565 mw32_f(INT_STAT, CINT_DONE);
1566
1567 #ifndef MVS_USE_TASKLET
1568 spin_lock(&mvi->lock);
1569
1570 mvs_int_full(mvi);
1571
1572 spin_unlock(&mvi->lock);
1573 #else
1574 tasklet_schedule(&mvi->tasklet);
1575 #endif
1576 return IRQ_HANDLED;
1577 }
1578
1579 #ifndef MVS_DISABLE_MSI
1580 static irqreturn_t mvs_msi_interrupt(int irq, void *opaque)
1581 {
1582 struct mvs_info *mvi = opaque;
1583
1584 #ifndef MVS_USE_TASKLET
1585 spin_lock(&mvi->lock);
1586
1587 mvs_int_rx(mvi, true);
1588
1589 spin_unlock(&mvi->lock);
1590 #else
1591 tasklet_schedule(&mvi->tasklet);
1592 #endif
1593 return IRQ_HANDLED;
1594 }
1595 #endif
1596
1597 struct mvs_task_exec_info {
1598 struct sas_task *task;
1599 struct mvs_cmd_hdr *hdr;
1600 struct mvs_port *port;
1601 u32 tag;
1602 int n_elem;
1603 };
1604
1605 static int mvs_task_prep_smp(struct mvs_info *mvi,
1606 struct mvs_task_exec_info *tei)
1607 {
1608 int elem, rc, i;
1609 struct sas_task *task = tei->task;
1610 struct mvs_cmd_hdr *hdr = tei->hdr;
1611 struct scatterlist *sg_req, *sg_resp;
1612 u32 req_len, resp_len, tag = tei->tag;
1613 void *buf_tmp;
1614 u8 *buf_oaf;
1615 dma_addr_t buf_tmp_dma;
1616 struct mvs_prd *buf_prd;
1617 struct scatterlist *sg;
1618 struct mvs_slot_info *slot = &mvi->slot_info[tag];
1619 struct asd_sas_port *sas_port = task->dev->port;
1620 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
1621 #if _MV_DUMP
1622 u8 *buf_cmd;
1623 void *from;
1624 #endif
1625 /*
1626 * DMA-map SMP request, response buffers
1627 */
1628 sg_req = &task->smp_task.smp_req;
1629 elem = pci_map_sg(mvi->pdev, sg_req, 1, PCI_DMA_TODEVICE);
1630 if (!elem)
1631 return -ENOMEM;
1632 req_len = sg_dma_len(sg_req);
1633
1634 sg_resp = &task->smp_task.smp_resp;
1635 elem = pci_map_sg(mvi->pdev, sg_resp, 1, PCI_DMA_FROMDEVICE);
1636 if (!elem) {
1637 rc = -ENOMEM;
1638 goto err_out;
1639 }
1640 resp_len = sg_dma_len(sg_resp);
1641
1642 /* must be in dwords */
1643 if ((req_len & 0x3) || (resp_len & 0x3)) {
1644 rc = -EINVAL;
1645 goto err_out_2;
1646 }
1647
1648 /*
1649 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
1650 */
1651
1652 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
1653 buf_tmp = slot->buf;
1654 buf_tmp_dma = slot->buf_dma;
1655
1656 #if _MV_DUMP
1657 buf_cmd = buf_tmp;
1658 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
1659 buf_tmp += req_len;
1660 buf_tmp_dma += req_len;
1661 slot->cmd_size = req_len;
1662 #else
1663 hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
1664 #endif
1665
1666 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
1667 buf_oaf = buf_tmp;
1668 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
1669
1670 buf_tmp += MVS_OAF_SZ;
1671 buf_tmp_dma += MVS_OAF_SZ;
1672
1673 /* region 3: PRD table ********************************************* */
1674 buf_prd = buf_tmp;
1675 if (tei->n_elem)
1676 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
1677 else
1678 hdr->prd_tbl = 0;
1679
1680 i = sizeof(struct mvs_prd) * tei->n_elem;
1681 buf_tmp += i;
1682 buf_tmp_dma += i;
1683
1684 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
1685 slot->response = buf_tmp;
1686 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
1687
1688 /*
1689 * Fill in TX ring and command slot header
1690 */
1691 slot->tx = mvi->tx_prod;
1692 mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
1693 TXQ_MODE_I | tag |
1694 (sas_port->phy_mask << TXQ_PHY_SHIFT));
1695
1696 hdr->flags |= flags;
1697 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
1698 hdr->tags = cpu_to_le32(tag);
1699 hdr->data_len = 0;
1700
1701 /* generate open address frame hdr (first 12 bytes) */
1702 buf_oaf[0] = (1 << 7) | (0 << 4) | 0x01; /* initiator, SMP, ftype 1h */
1703 buf_oaf[1] = task->dev->linkrate & 0xf;
1704 *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */
1705 memcpy(buf_oaf + 4, task->dev->sas_addr, SAS_ADDR_SIZE);
1706
1707 /* fill in PRD (scatter/gather) table, if any */
1708 for_each_sg(task->scatter, sg, tei->n_elem, i) {
1709 buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
1710 buf_prd->len = cpu_to_le32(sg_dma_len(sg));
1711 buf_prd++;
1712 }
1713
1714 #if _MV_DUMP
1715 /* copy cmd table */
1716 from = kmap_atomic(sg_page(sg_req), KM_IRQ0);
1717 memcpy(buf_cmd, from + sg_req->offset, req_len);
1718 kunmap_atomic(from, KM_IRQ0);
1719 #endif
1720 return 0;
1721
1722 err_out_2:
1723 pci_unmap_sg(mvi->pdev, &tei->task->smp_task.smp_resp, 1,
1724 PCI_DMA_FROMDEVICE);
1725 err_out:
1726 pci_unmap_sg(mvi->pdev, &tei->task->smp_task.smp_req, 1,
1727 PCI_DMA_TODEVICE);
1728 return rc;
1729 }
1730
1731 static void mvs_free_reg_set(struct mvs_info *mvi, struct mvs_port *port)
1732 {
1733 void __iomem *regs = mvi->regs;
1734 u32 tmp, offs;
1735 u8 *tfs = &port->taskfileset;
1736
1737 if (*tfs == MVS_ID_NOT_MAPPED)
1738 return;
1739
1740 offs = 1U << ((*tfs & 0x0f) + PCS_EN_SATA_REG_SHIFT);
1741 if (*tfs < 16) {
1742 tmp = mr32(PCS);
1743 mw32(PCS, tmp & ~offs);
1744 } else {
1745 tmp = mr32(CTL);
1746 mw32(CTL, tmp & ~offs);
1747 }
1748
1749 tmp = mr32(INT_STAT_SRS) & (1U << *tfs);
1750 if (tmp)
1751 mw32(INT_STAT_SRS, tmp);
1752
1753 *tfs = MVS_ID_NOT_MAPPED;
1754 }
1755
1756 static u8 mvs_assign_reg_set(struct mvs_info *mvi, struct mvs_port *port)
1757 {
1758 int i;
1759 u32 tmp, offs;
1760 void __iomem *regs = mvi->regs;
1761
1762 if (port->taskfileset != MVS_ID_NOT_MAPPED)
1763 return 0;
1764
1765 tmp = mr32(PCS);
1766
1767 for (i = 0; i < mvi->chip->srs_sz; i++) {
1768 if (i == 16)
1769 tmp = mr32(CTL);
1770 offs = 1U << ((i & 0x0f) + PCS_EN_SATA_REG_SHIFT);
1771 if (!(tmp & offs)) {
1772 port->taskfileset = i;
1773
1774 if (i < 16)
1775 mw32(PCS, tmp | offs);
1776 else
1777 mw32(CTL, tmp | offs);
1778 tmp = mr32(INT_STAT_SRS) & (1U << i);
1779 if (tmp)
1780 mw32(INT_STAT_SRS, tmp);
1781 return 0;
1782 }
1783 }
1784 return MVS_ID_NOT_MAPPED;
1785 }
1786
1787 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
1788 {
1789 struct ata_queued_cmd *qc = task->uldd_task;
1790
1791 if (qc) {
1792 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
1793 qc->tf.command == ATA_CMD_FPDMA_READ) {
1794 *tag = qc->tag;
1795 return 1;
1796 }
1797 }
1798
1799 return 0;
1800 }
1801
1802 static int mvs_task_prep_ata(struct mvs_info *mvi,
1803 struct mvs_task_exec_info *tei)
1804 {
1805 struct sas_task *task = tei->task;
1806 struct domain_device *dev = task->dev;
1807 struct mvs_cmd_hdr *hdr = tei->hdr;
1808 struct asd_sas_port *sas_port = dev->port;
1809 struct mvs_slot_info *slot;
1810 struct scatterlist *sg;
1811 struct mvs_prd *buf_prd;
1812 struct mvs_port *port = tei->port;
1813 u32 tag = tei->tag;
1814 u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
1815 void *buf_tmp;
1816 u8 *buf_cmd, *buf_oaf;
1817 dma_addr_t buf_tmp_dma;
1818 u32 i, req_len, resp_len;
1819 const u32 max_resp_len = SB_RFB_MAX;
1820
1821 if (mvs_assign_reg_set(mvi, port) == MVS_ID_NOT_MAPPED)
1822 return -EBUSY;
1823
1824 slot = &mvi->slot_info[tag];
1825 slot->tx = mvi->tx_prod;
1826 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
1827 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
1828 (sas_port->phy_mask << TXQ_PHY_SHIFT) |
1829 (port->taskfileset << TXQ_SRS_SHIFT));
1830
1831 if (task->ata_task.use_ncq)
1832 flags |= MCH_FPDMA;
1833 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) {
1834 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
1835 flags |= MCH_ATAPI;
1836 }
1837
1838 /* FIXME: fill in port multiplier number */
1839
1840 hdr->flags = cpu_to_le32(flags);
1841
1842 /* FIXME: the low order order 5 bits for the TAG if enable NCQ */
1843 if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr->tags))
1844 task->ata_task.fis.sector_count |= hdr->tags << 3;
1845 else
1846 hdr->tags = cpu_to_le32(tag);
1847 hdr->data_len = cpu_to_le32(task->total_xfer_len);
1848
1849 /*
1850 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
1851 */
1852
1853 /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
1854 buf_cmd = buf_tmp = slot->buf;
1855 buf_tmp_dma = slot->buf_dma;
1856
1857 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
1858
1859 buf_tmp += MVS_ATA_CMD_SZ;
1860 buf_tmp_dma += MVS_ATA_CMD_SZ;
1861 #if _MV_DUMP
1862 slot->cmd_size = MVS_ATA_CMD_SZ;
1863 #endif
1864
1865 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
1866 /* used for STP. unused for SATA? */
1867 buf_oaf = buf_tmp;
1868 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
1869
1870 buf_tmp += MVS_OAF_SZ;
1871 buf_tmp_dma += MVS_OAF_SZ;
1872
1873 /* region 3: PRD table ********************************************* */
1874 buf_prd = buf_tmp;
1875 if (tei->n_elem)
1876 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
1877 else
1878 hdr->prd_tbl = 0;
1879
1880 i = sizeof(struct mvs_prd) * tei->n_elem;
1881 buf_tmp += i;
1882 buf_tmp_dma += i;
1883
1884 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
1885 /* FIXME: probably unused, for SATA. kept here just in case
1886 * we get a STP/SATA error information record
1887 */
1888 slot->response = buf_tmp;
1889 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
1890
1891 req_len = sizeof(struct host_to_dev_fis);
1892 resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
1893 sizeof(struct mvs_err_info) - i;
1894
1895 /* request, response lengths */
1896 resp_len = min(resp_len, max_resp_len);
1897 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
1898
1899 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
1900 /* fill in command FIS and ATAPI CDB */
1901 memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
1902 if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
1903 memcpy(buf_cmd + STP_ATAPI_CMD,
1904 task->ata_task.atapi_packet, 16);
1905
1906 /* generate open address frame hdr (first 12 bytes) */
1907 buf_oaf[0] = (1 << 7) | (2 << 4) | 0x1; /* initiator, STP, ftype 1h */
1908 buf_oaf[1] = task->dev->linkrate & 0xf;
1909 *(u16 *)(buf_oaf + 2) = cpu_to_be16(tag);
1910 memcpy(buf_oaf + 4, task->dev->sas_addr, SAS_ADDR_SIZE);
1911
1912 /* fill in PRD (scatter/gather) table, if any */
1913 for_each_sg(task->scatter, sg, tei->n_elem, i) {
1914 buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
1915 buf_prd->len = cpu_to_le32(sg_dma_len(sg));
1916 buf_prd++;
1917 }
1918
1919 return 0;
1920 }
1921
1922 static int mvs_task_prep_ssp(struct mvs_info *mvi,
1923 struct mvs_task_exec_info *tei)
1924 {
1925 struct sas_task *task = tei->task;
1926 struct mvs_cmd_hdr *hdr = tei->hdr;
1927 struct mvs_port *port = tei->port;
1928 struct mvs_slot_info *slot;
1929 struct scatterlist *sg;
1930 struct mvs_prd *buf_prd;
1931 struct ssp_frame_hdr *ssp_hdr;
1932 void *buf_tmp;
1933 u8 *buf_cmd, *buf_oaf, fburst = 0;
1934 dma_addr_t buf_tmp_dma;
1935 u32 flags;
1936 u32 resp_len, req_len, i, tag = tei->tag;
1937 const u32 max_resp_len = SB_RFB_MAX;
1938 u8 phy_mask;
1939
1940 slot = &mvi->slot_info[tag];
1941
1942 phy_mask = (port->wide_port_phymap) ? port->wide_port_phymap :
1943 task->dev->port->phy_mask;
1944 slot->tx = mvi->tx_prod;
1945 mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
1946 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
1947 (phy_mask << TXQ_PHY_SHIFT));
1948
1949 flags = MCH_RETRY;
1950 if (task->ssp_task.enable_first_burst) {
1951 flags |= MCH_FBURST;
1952 fburst = (1 << 7);
1953 }
1954 hdr->flags = cpu_to_le32(flags |
1955 (tei->n_elem << MCH_PRD_LEN_SHIFT) |
1956 (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT));
1957
1958 hdr->tags = cpu_to_le32(tag);
1959 hdr->data_len = cpu_to_le32(task->total_xfer_len);
1960
1961 /*
1962 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
1963 */
1964
1965 /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
1966 buf_cmd = buf_tmp = slot->buf;
1967 buf_tmp_dma = slot->buf_dma;
1968
1969 hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
1970
1971 buf_tmp += MVS_SSP_CMD_SZ;
1972 buf_tmp_dma += MVS_SSP_CMD_SZ;
1973 #if _MV_DUMP
1974 slot->cmd_size = MVS_SSP_CMD_SZ;
1975 #endif
1976
1977 /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
1978 buf_oaf = buf_tmp;
1979 hdr->open_frame = cpu_to_le64(buf_tmp_dma);
1980
1981 buf_tmp += MVS_OAF_SZ;
1982 buf_tmp_dma += MVS_OAF_SZ;
1983
1984 /* region 3: PRD table ********************************************* */
1985 buf_prd = buf_tmp;
1986 if (tei->n_elem)
1987 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
1988 else
1989 hdr->prd_tbl = 0;
1990
1991 i = sizeof(struct mvs_prd) * tei->n_elem;
1992 buf_tmp += i;
1993 buf_tmp_dma += i;
1994
1995 /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
1996 slot->response = buf_tmp;
1997 hdr->status_buf = cpu_to_le64(buf_tmp_dma);
1998
1999 resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
2000 sizeof(struct mvs_err_info) - i;
2001 resp_len = min(resp_len, max_resp_len);
2002
2003 req_len = sizeof(struct ssp_frame_hdr) + 28;
2004
2005 /* request, response lengths */
2006 hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
2007
2008 /* generate open address frame hdr (first 12 bytes) */
2009 buf_oaf[0] = (1 << 7) | (1 << 4) | 0x1; /* initiator, SSP, ftype 1h */
2010 buf_oaf[1] = task->dev->linkrate & 0xf;
2011 *(u16 *)(buf_oaf + 2) = cpu_to_be16(tag);
2012 memcpy(buf_oaf + 4, task->dev->sas_addr, SAS_ADDR_SIZE);
2013
2014 /* fill in SSP frame header (Command Table.SSP frame header) */
2015 ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
2016 ssp_hdr->frame_type = SSP_COMMAND;
2017 memcpy(ssp_hdr->hashed_dest_addr, task->dev->hashed_sas_addr,
2018 HASHED_SAS_ADDR_SIZE);
2019 memcpy(ssp_hdr->hashed_src_addr,
2020 task->dev->port->ha->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
2021 ssp_hdr->tag = cpu_to_be16(tag);
2022
2023 /* fill in command frame IU */
2024 buf_cmd += sizeof(*ssp_hdr);
2025 memcpy(buf_cmd, &task->ssp_task.LUN, 8);
2026 buf_cmd[9] = fburst | task->ssp_task.task_attr |
2027 (task->ssp_task.task_prio << 3);
2028 memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16);
2029
2030 /* fill in PRD (scatter/gather) table, if any */
2031 for_each_sg(task->scatter, sg, tei->n_elem, i) {
2032 buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
2033 buf_prd->len = cpu_to_le32(sg_dma_len(sg));
2034 buf_prd++;
2035 }
2036
2037 return 0;
2038 }
2039
2040 static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags)
2041 {
2042 struct domain_device *dev = task->dev;
2043 struct mvs_info *mvi = dev->port->ha->lldd_ha;
2044 struct pci_dev *pdev = mvi->pdev;
2045 void __iomem *regs = mvi->regs;
2046 struct mvs_task_exec_info tei;
2047 struct sas_task *t = task;
2048 struct mvs_slot_info *slot;
2049 u32 tag = 0xdeadbeef, rc, n_elem = 0;
2050 unsigned long flags;
2051 u32 n = num, pass = 0;
2052
2053 spin_lock_irqsave(&mvi->lock, flags);
2054 do {
2055 dev = t->dev;
2056 tei.port = &mvi->port[dev->port->id];
2057
2058 if (!tei.port->port_attached) {
2059 if (sas_protocol_ata(t->task_proto)) {
2060 rc = SAS_PHY_DOWN;
2061 goto out_done;
2062 } else {
2063 struct task_status_struct *ts = &t->task_status;
2064 ts->resp = SAS_TASK_UNDELIVERED;
2065 ts->stat = SAS_PHY_DOWN;
2066 t->task_done(t);
2067 if (n > 1)
2068 t = list_entry(t->list.next,
2069 struct sas_task, list);
2070 continue;
2071 }
2072 }
2073
2074 if (!sas_protocol_ata(t->task_proto)) {
2075 if (t->num_scatter) {
2076 n_elem = pci_map_sg(mvi->pdev, t->scatter,
2077 t->num_scatter,
2078 t->data_dir);
2079 if (!n_elem) {
2080 rc = -ENOMEM;
2081 goto err_out;
2082 }
2083 }
2084 } else {
2085 n_elem = t->num_scatter;
2086 }
2087
2088 rc = mvs_tag_alloc(mvi, &tag);
2089 if (rc)
2090 goto err_out;
2091
2092 slot = &mvi->slot_info[tag];
2093 t->lldd_task = NULL;
2094 slot->n_elem = n_elem;
2095 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
2096 tei.task = t;
2097 tei.hdr = &mvi->slot[tag];
2098 tei.tag = tag;
2099 tei.n_elem = n_elem;
2100
2101 switch (t->task_proto) {
2102 case SAS_PROTOCOL_SMP:
2103 rc = mvs_task_prep_smp(mvi, &tei);
2104 break;
2105 case SAS_PROTOCOL_SSP:
2106 rc = mvs_task_prep_ssp(mvi, &tei);
2107 break;
2108 case SAS_PROTOCOL_SATA:
2109 case SAS_PROTOCOL_STP:
2110 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
2111 rc = mvs_task_prep_ata(mvi, &tei);
2112 break;
2113 default:
2114 dev_printk(KERN_ERR, &pdev->dev,
2115 "unknown sas_task proto: 0x%x\n",
2116 t->task_proto);
2117 rc = -EINVAL;
2118 break;
2119 }
2120
2121 if (rc)
2122 goto err_out_tag;
2123
2124 slot->task = t;
2125 slot->port = tei.port;
2126 t->lldd_task = (void *) slot;
2127 list_add_tail(&slot->list, &slot->port->list);
2128 /* TODO: select normal or high priority */
2129
2130 spin_lock(&t->task_state_lock);
2131 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
2132 spin_unlock(&t->task_state_lock);
2133
2134 mvs_hba_memory_dump(mvi, tag, t->task_proto);
2135
2136 ++pass;
2137 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
2138 if (n > 1)
2139 t = list_entry(t->list.next, struct sas_task, list);
2140 } while (--n);
2141
2142 rc = 0;
2143 goto out_done;
2144
2145 err_out_tag:
2146 mvs_tag_free(mvi, tag);
2147 err_out:
2148 dev_printk(KERN_ERR, &pdev->dev, "mvsas exec failed[%d]!\n", rc);
2149 if (!sas_protocol_ata(t->task_proto))
2150 if (n_elem)
2151 pci_unmap_sg(mvi->pdev, t->scatter, n_elem,
2152 t->data_dir);
2153 out_done:
2154 if (pass)
2155 mw32(TX_PROD_IDX, (mvi->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
2156 spin_unlock_irqrestore(&mvi->lock, flags);
2157 return rc;
2158 }
2159
2160 static int mvs_task_abort(struct sas_task *task)
2161 {
2162 int rc;
2163 unsigned long flags;
2164 struct mvs_info *mvi = task->dev->port->ha->lldd_ha;
2165 struct pci_dev *pdev = mvi->pdev;
2166 int tag;
2167
2168 spin_lock_irqsave(&task->task_state_lock, flags);
2169 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
2170 rc = TMF_RESP_FUNC_COMPLETE;
2171 spin_unlock_irqrestore(&task->task_state_lock, flags);
2172 goto out_done;
2173 }
2174 spin_unlock_irqrestore(&task->task_state_lock, flags);
2175
2176 switch (task->task_proto) {
2177 case SAS_PROTOCOL_SMP:
2178 dev_printk(KERN_DEBUG, &pdev->dev, "SMP Abort! \n");
2179 break;
2180 case SAS_PROTOCOL_SSP:
2181 dev_printk(KERN_DEBUG, &pdev->dev, "SSP Abort! \n");
2182 break;
2183 case SAS_PROTOCOL_SATA:
2184 case SAS_PROTOCOL_STP:
2185 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:{
2186 dev_printk(KERN_DEBUG, &pdev->dev, "STP Abort! \n");
2187 #if _MV_DUMP
2188 dev_printk(KERN_DEBUG, &pdev->dev, "Dump D2H FIS: \n");
2189 mvs_hexdump(sizeof(struct host_to_dev_fis),
2190 (void *)&task->ata_task.fis, 0);
2191 dev_printk(KERN_DEBUG, &pdev->dev, "Dump ATAPI Cmd : \n");
2192 mvs_hexdump(16, task->ata_task.atapi_packet, 0);
2193 #endif
2194 spin_lock_irqsave(&task->task_state_lock, flags);
2195 if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET) {
2196 /* TODO */
2197 ;
2198 }
2199 spin_unlock_irqrestore(&task->task_state_lock, flags);
2200 break;
2201 }
2202 default:
2203 break;
2204 }
2205
2206 if (mvs_find_tag(mvi, task, &tag)) {
2207 spin_lock_irqsave(&mvi->lock, flags);
2208 mvs_slot_task_free(mvi, task, &mvi->slot_info[tag], tag);
2209 spin_unlock_irqrestore(&mvi->lock, flags);
2210 }
2211 if (!mvs_task_exec(task, 1, GFP_ATOMIC))
2212 rc = TMF_RESP_FUNC_COMPLETE;
2213 else
2214 rc = TMF_RESP_FUNC_FAILED;
2215 out_done:
2216 return rc;
2217 }
2218
2219 static void mvs_free(struct mvs_info *mvi)
2220 {
2221 int i;
2222
2223 if (!mvi)
2224 return;
2225
2226 for (i = 0; i < MVS_SLOTS; i++) {
2227 struct mvs_slot_info *slot = &mvi->slot_info[i];
2228
2229 if (slot->buf)
2230 dma_free_coherent(&mvi->pdev->dev, MVS_SLOT_BUF_SZ,
2231 slot->buf, slot->buf_dma);
2232 }
2233
2234 if (mvi->tx)
2235 dma_free_coherent(&mvi->pdev->dev,
2236 sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
2237 mvi->tx, mvi->tx_dma);
2238 if (mvi->rx_fis)
2239 dma_free_coherent(&mvi->pdev->dev, MVS_RX_FISL_SZ,
2240 mvi->rx_fis, mvi->rx_fis_dma);
2241 if (mvi->rx)
2242 dma_free_coherent(&mvi->pdev->dev,
2243 sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
2244 mvi->rx, mvi->rx_dma);
2245 if (mvi->slot)
2246 dma_free_coherent(&mvi->pdev->dev,
2247 sizeof(*mvi->slot) * MVS_SLOTS,
2248 mvi->slot, mvi->slot_dma);
2249 #ifdef MVS_ENABLE_PERI
2250 if (mvi->peri_regs)
2251 iounmap(mvi->peri_regs);
2252 #endif
2253 if (mvi->regs)
2254 iounmap(mvi->regs);
2255 if (mvi->shost)
2256 scsi_host_put(mvi->shost);
2257 kfree(mvi->sas.sas_port);
2258 kfree(mvi->sas.sas_phy);
2259 kfree(mvi);
2260 }
2261
2262 /* FIXME: locking? */
2263 static int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
2264 void *funcdata)
2265 {
2266 struct mvs_info *mvi = sas_phy->ha->lldd_ha;
2267 int rc = 0, phy_id = sas_phy->id;
2268 u32 tmp;
2269
2270 tmp = mvs_read_phy_ctl(mvi, phy_id);
2271
2272 switch (func) {
2273 case PHY_FUNC_SET_LINK_RATE:{
2274 struct sas_phy_linkrates *rates = funcdata;
2275 u32 lrmin = 0, lrmax = 0;
2276
2277 lrmin = (rates->minimum_linkrate << 8);
2278 lrmax = (rates->maximum_linkrate << 12);
2279
2280 if (lrmin) {
2281 tmp &= ~(0xf << 8);
2282 tmp |= lrmin;
2283 }
2284 if (lrmax) {
2285 tmp &= ~(0xf << 12);
2286 tmp |= lrmax;
2287 }
2288 mvs_write_phy_ctl(mvi, phy_id, tmp);
2289 break;
2290 }
2291
2292 case PHY_FUNC_HARD_RESET:
2293 if (tmp & PHY_RST_HARD)
2294 break;
2295 mvs_write_phy_ctl(mvi, phy_id, tmp | PHY_RST_HARD);
2296 break;
2297
2298 case PHY_FUNC_LINK_RESET:
2299 mvs_write_phy_ctl(mvi, phy_id, tmp | PHY_RST);
2300 break;
2301
2302 case PHY_FUNC_DISABLE:
2303 case PHY_FUNC_RELEASE_SPINUP_HOLD:
2304 default:
2305 rc = -EOPNOTSUPP;
2306 }
2307
2308 return rc;
2309 }
2310
2311 static void __devinit mvs_phy_init(struct mvs_info *mvi, int phy_id)
2312 {
2313 struct mvs_phy *phy = &mvi->phy[phy_id];
2314 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2315
2316 sas_phy->enabled = (phy_id < mvi->chip->n_phy) ? 1 : 0;
2317 sas_phy->class = SAS;
2318 sas_phy->iproto = SAS_PROTOCOL_ALL;
2319 sas_phy->tproto = 0;
2320 sas_phy->type = PHY_TYPE_PHYSICAL;
2321 sas_phy->role = PHY_ROLE_INITIATOR;
2322 sas_phy->oob_mode = OOB_NOT_CONNECTED;
2323 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
2324
2325 sas_phy->id = phy_id;
2326 sas_phy->sas_addr = &mvi->sas_addr[0];
2327 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
2328 sas_phy->ha = &mvi->sas;
2329 sas_phy->lldd_phy = phy;
2330 }
2331
2332 static struct mvs_info *__devinit mvs_alloc(struct pci_dev *pdev,
2333 const struct pci_device_id *ent)
2334 {
2335 struct mvs_info *mvi;
2336 unsigned long res_start, res_len, res_flag;
2337 struct asd_sas_phy **arr_phy;
2338 struct asd_sas_port **arr_port;
2339 const struct mvs_chip_info *chip = &mvs_chips[ent->driver_data];
2340 int i;
2341
2342 /*
2343 * alloc and init our per-HBA mvs_info struct
2344 */
2345
2346 mvi = kzalloc(sizeof(*mvi), GFP_KERNEL);
2347 if (!mvi)
2348 return NULL;
2349
2350 spin_lock_init(&mvi->lock);
2351 #ifdef MVS_USE_TASKLET
2352 tasklet_init(&mvi->tasklet, mvs_tasklet, (unsigned long)mvi);
2353 #endif
2354 mvi->pdev = pdev;
2355 mvi->chip = chip;
2356
2357 if (pdev->device == 0x6440 && pdev->revision == 0)
2358 mvi->flags |= MVF_PHY_PWR_FIX;
2359
2360 /*
2361 * alloc and init SCSI, SAS glue
2362 */
2363
2364 mvi->shost = scsi_host_alloc(&mvs_sht, sizeof(void *));
2365 if (!mvi->shost)
2366 goto err_out;
2367
2368 arr_phy = kcalloc(MVS_MAX_PHYS, sizeof(void *), GFP_KERNEL);
2369 arr_port = kcalloc(MVS_MAX_PHYS, sizeof(void *), GFP_KERNEL);
2370 if (!arr_phy || !arr_port)
2371 goto err_out;
2372
2373 for (i = 0; i < MVS_MAX_PHYS; i++) {
2374 mvs_phy_init(mvi, i);
2375 arr_phy[i] = &mvi->phy[i].sas_phy;
2376 arr_port[i] = &mvi->port[i].sas_port;
2377 mvi->port[i].taskfileset = MVS_ID_NOT_MAPPED;
2378 mvi->port[i].wide_port_phymap = 0;
2379 mvi->port[i].port_attached = 0;
2380 INIT_LIST_HEAD(&mvi->port[i].list);
2381 }
2382
2383 SHOST_TO_SAS_HA(mvi->shost) = &mvi->sas;
2384 mvi->shost->transportt = mvs_stt;
2385 mvi->shost->max_id = 21;
2386 mvi->shost->max_lun = ~0;
2387 mvi->shost->max_channel = 0;
2388 mvi->shost->max_cmd_len = 16;
2389
2390 mvi->sas.sas_ha_name = DRV_NAME;
2391 mvi->sas.dev = &pdev->dev;
2392 mvi->sas.lldd_module = THIS_MODULE;
2393 mvi->sas.sas_addr = &mvi->sas_addr[0];
2394 mvi->sas.sas_phy = arr_phy;
2395 mvi->sas.sas_port = arr_port;
2396 mvi->sas.num_phys = chip->n_phy;
2397 mvi->sas.lldd_max_execute_num = 1;
2398 mvi->sas.lldd_queue_size = MVS_QUEUE_SIZE;
2399 mvi->shost->can_queue = MVS_CAN_QUEUE;
2400 mvi->shost->cmd_per_lun = MVS_SLOTS / mvi->sas.num_phys;
2401 mvi->sas.lldd_ha = mvi;
2402 mvi->sas.core.shost = mvi->shost;
2403
2404 mvs_tag_init(mvi);
2405
2406 /*
2407 * ioremap main and peripheral registers
2408 */
2409
2410 #ifdef MVS_ENABLE_PERI
2411 res_start = pci_resource_start(pdev, 2);
2412 res_len = pci_resource_len(pdev, 2);
2413 if (!res_start || !res_len)
2414 goto err_out;
2415
2416 mvi->peri_regs = ioremap_nocache(res_start, res_len);
2417 if (!mvi->peri_regs)
2418 goto err_out;
2419 #endif
2420
2421 res_start = pci_resource_start(pdev, 4);
2422 res_len = pci_resource_len(pdev, 4);
2423 if (!res_start || !res_len)
2424 goto err_out;
2425
2426 res_flag = pci_resource_flags(pdev, 4);
2427 if (res_flag & IORESOURCE_CACHEABLE)
2428 mvi->regs = ioremap(res_start, res_len);
2429 else
2430 mvi->regs = ioremap_nocache(res_start, res_len);
2431
2432 if (!mvi->regs)
2433 goto err_out;
2434
2435 /*
2436 * alloc and init our DMA areas
2437 */
2438
2439 mvi->tx = dma_alloc_coherent(&pdev->dev,
2440 sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
2441 &mvi->tx_dma, GFP_KERNEL);
2442 if (!mvi->tx)
2443 goto err_out;
2444 memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
2445
2446 mvi->rx_fis = dma_alloc_coherent(&pdev->dev, MVS_RX_FISL_SZ,
2447 &mvi->rx_fis_dma, GFP_KERNEL);
2448 if (!mvi->rx_fis)
2449 goto err_out;
2450 memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
2451
2452 mvi->rx = dma_alloc_coherent(&pdev->dev,
2453 sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
2454 &mvi->rx_dma, GFP_KERNEL);
2455 if (!mvi->rx)
2456 goto err_out;
2457 memset(mvi->rx, 0, sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1));
2458
2459 mvi->rx[0] = cpu_to_le32(0xfff);
2460 mvi->rx_cons = 0xfff;
2461
2462 mvi->slot = dma_alloc_coherent(&pdev->dev,
2463 sizeof(*mvi->slot) * MVS_SLOTS,
2464 &mvi->slot_dma, GFP_KERNEL);
2465 if (!mvi->slot)
2466 goto err_out;
2467 memset(mvi->slot, 0, sizeof(*mvi->slot) * MVS_SLOTS);
2468
2469 for (i = 0; i < MVS_SLOTS; i++) {
2470 struct mvs_slot_info *slot = &mvi->slot_info[i];
2471
2472 slot->buf = dma_alloc_coherent(&pdev->dev, MVS_SLOT_BUF_SZ,
2473 &slot->buf_dma, GFP_KERNEL);
2474 if (!slot->buf)
2475 goto err_out;
2476 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
2477 }
2478
2479 /* finally, read NVRAM to get our SAS address */
2480 if (mvs_nvram_read(mvi, NVR_SAS_ADDR, &mvi->sas_addr, 8))
2481 goto err_out;
2482 return mvi;
2483
2484 err_out:
2485 mvs_free(mvi);
2486 return NULL;
2487 }
2488
2489 static u32 mvs_cr32(void __iomem *regs, u32 addr)
2490 {
2491 mw32(CMD_ADDR, addr);
2492 return mr32(CMD_DATA);
2493 }
2494
2495 static void mvs_cw32(void __iomem *regs, u32 addr, u32 val)
2496 {
2497 mw32(CMD_ADDR, addr);
2498 mw32(CMD_DATA, val);
2499 }
2500
2501 static u32 mvs_read_phy_ctl(struct mvs_info *mvi, u32 port)
2502 {
2503 void __iomem *regs = mvi->regs;
2504 return (port < 4)?mr32(P0_SER_CTLSTAT + port * 4):
2505 mr32(P4_SER_CTLSTAT + (port - 4) * 4);
2506 }
2507
2508 static void mvs_write_phy_ctl(struct mvs_info *mvi, u32 port, u32 val)
2509 {
2510 void __iomem *regs = mvi->regs;
2511 if (port < 4)
2512 mw32(P0_SER_CTLSTAT + port * 4, val);
2513 else
2514 mw32(P4_SER_CTLSTAT + (port - 4) * 4, val);
2515 }
2516
2517 static u32 mvs_read_port(struct mvs_info *mvi, u32 off, u32 off2, u32 port)
2518 {
2519 void __iomem *regs = mvi->regs + off;
2520 void __iomem *regs2 = mvi->regs + off2;
2521 return (port < 4)?readl(regs + port * 8):
2522 readl(regs2 + (port - 4) * 8);
2523 }
2524
2525 static void mvs_write_port(struct mvs_info *mvi, u32 off, u32 off2,
2526 u32 port, u32 val)
2527 {
2528 void __iomem *regs = mvi->regs + off;
2529 void __iomem *regs2 = mvi->regs + off2;
2530 if (port < 4)
2531 writel(val, regs + port * 8);
2532 else
2533 writel(val, regs2 + (port - 4) * 8);
2534 }
2535
2536 static u32 mvs_read_port_cfg_data(struct mvs_info *mvi, u32 port)
2537 {
2538 return mvs_read_port(mvi, MVS_P0_CFG_DATA, MVS_P4_CFG_DATA, port);
2539 }
2540
2541 static void mvs_write_port_cfg_data(struct mvs_info *mvi, u32 port, u32 val)
2542 {
2543 mvs_write_port(mvi, MVS_P0_CFG_DATA, MVS_P4_CFG_DATA, port, val);
2544 }
2545
2546 static void mvs_write_port_cfg_addr(struct mvs_info *mvi, u32 port, u32 addr)
2547 {
2548 mvs_write_port(mvi, MVS_P0_CFG_ADDR, MVS_P4_CFG_ADDR, port, addr);
2549 }
2550
2551 static u32 mvs_read_port_vsr_data(struct mvs_info *mvi, u32 port)
2552 {
2553 return mvs_read_port(mvi, MVS_P0_VSR_DATA, MVS_P4_VSR_DATA, port);
2554 }
2555
2556 static void mvs_write_port_vsr_data(struct mvs_info *mvi, u32 port, u32 val)
2557 {
2558 mvs_write_port(mvi, MVS_P0_VSR_DATA, MVS_P4_VSR_DATA, port, val);
2559 }
2560
2561 static void mvs_write_port_vsr_addr(struct mvs_info *mvi, u32 port, u32 addr)
2562 {
2563 mvs_write_port(mvi, MVS_P0_VSR_ADDR, MVS_P4_VSR_ADDR, port, addr);
2564 }
2565
2566 static u32 mvs_read_port_irq_stat(struct mvs_info *mvi, u32 port)
2567 {
2568 return mvs_read_port(mvi, MVS_P0_INT_STAT, MVS_P4_INT_STAT, port);
2569 }
2570
2571 static void mvs_write_port_irq_stat(struct mvs_info *mvi, u32 port, u32 val)
2572 {
2573 mvs_write_port(mvi, MVS_P0_INT_STAT, MVS_P4_INT_STAT, port, val);
2574 }
2575
2576 static u32 mvs_read_port_irq_mask(struct mvs_info *mvi, u32 port)
2577 {
2578 return mvs_read_port(mvi, MVS_P0_INT_MASK, MVS_P4_INT_MASK, port);
2579 }
2580
2581 static void mvs_write_port_irq_mask(struct mvs_info *mvi, u32 port, u32 val)
2582 {
2583 mvs_write_port(mvi, MVS_P0_INT_MASK, MVS_P4_INT_MASK, port, val);
2584 }
2585
2586 static void __devinit mvs_phy_hacks(struct mvs_info *mvi)
2587 {
2588 void __iomem *regs = mvi->regs;
2589 u32 tmp;
2590
2591 /* workaround for SATA R-ERR, to ignore phy glitch */
2592 tmp = mvs_cr32(regs, CMD_PHY_TIMER);
2593 tmp &= ~(1 << 9);
2594 tmp |= (1 << 10);
2595 mvs_cw32(regs, CMD_PHY_TIMER, tmp);
2596
2597 /* enable retry 127 times */
2598 mvs_cw32(regs, CMD_SAS_CTL1, 0x7f7f);
2599
2600 /* extend open frame timeout to max */
2601 tmp = mvs_cr32(regs, CMD_SAS_CTL0);
2602 tmp &= ~0xffff;
2603 tmp |= 0x3fff;
2604 mvs_cw32(regs, CMD_SAS_CTL0, tmp);
2605
2606 /* workaround for WDTIMEOUT , set to 550 ms */
2607 mvs_cw32(regs, CMD_WD_TIMER, 0x86470);
2608
2609 /* not to halt for different port op during wideport link change */
2610 mvs_cw32(regs, CMD_APP_ERR_CONFIG, 0xffefbf7d);
2611
2612 /* workaround for Seagate disk not-found OOB sequence, recv
2613 * COMINIT before sending out COMWAKE */
2614 tmp = mvs_cr32(regs, CMD_PHY_MODE_21);
2615 tmp &= 0x0000ffff;
2616 tmp |= 0x00fa0000;
2617 mvs_cw32(regs, CMD_PHY_MODE_21, tmp);
2618
2619 tmp = mvs_cr32(regs, CMD_PHY_TIMER);
2620 tmp &= 0x1fffffff;
2621 tmp |= (2U << 29); /* 8 ms retry */
2622 mvs_cw32(regs, CMD_PHY_TIMER, tmp);
2623
2624 /* TEST - for phy decoding error, adjust voltage levels */
2625 mw32(P0_VSR_ADDR + 0, 0x8);
2626 mw32(P0_VSR_DATA + 0, 0x2F0);
2627
2628 mw32(P0_VSR_ADDR + 8, 0x8);
2629 mw32(P0_VSR_DATA + 8, 0x2F0);
2630
2631 mw32(P0_VSR_ADDR + 16, 0x8);
2632 mw32(P0_VSR_DATA + 16, 0x2F0);
2633
2634 mw32(P0_VSR_ADDR + 24, 0x8);
2635 mw32(P0_VSR_DATA + 24, 0x2F0);
2636
2637 }
2638
2639 static void mvs_enable_xmt(struct mvs_info *mvi, int PhyId)
2640 {
2641 void __iomem *regs = mvi->regs;
2642 u32 tmp;
2643
2644 tmp = mr32(PCS);
2645 if (mvi->chip->n_phy <= 4)
2646 tmp |= 1 << (PhyId + PCS_EN_PORT_XMT_SHIFT);
2647 else
2648 tmp |= 1 << (PhyId + PCS_EN_PORT_XMT_SHIFT2);
2649 mw32(PCS, tmp);
2650 }
2651
2652 static void mvs_detect_porttype(struct mvs_info *mvi, int i)
2653 {
2654 void __iomem *regs = mvi->regs;
2655 u32 reg;
2656 struct mvs_phy *phy = &mvi->phy[i];
2657
2658 /* TODO check & save device type */
2659 reg = mr32(GBL_PORT_TYPE);
2660
2661 if (reg & MODE_SAS_SATA & (1 << i))
2662 phy->phy_type |= PORT_TYPE_SAS;
2663 else
2664 phy->phy_type |= PORT_TYPE_SATA;
2665 }
2666
2667 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
2668 {
2669 u32 *s = (u32 *) buf;
2670
2671 if (!s)
2672 return NULL;
2673
2674 mvs_write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
2675 s[3] = mvs_read_port_cfg_data(mvi, i);
2676
2677 mvs_write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
2678 s[2] = mvs_read_port_cfg_data(mvi, i);
2679
2680 mvs_write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
2681 s[1] = mvs_read_port_cfg_data(mvi, i);
2682
2683 mvs_write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
2684 s[0] = mvs_read_port_cfg_data(mvi, i);
2685
2686 return (void *)s;
2687 }
2688
2689 static u32 mvs_is_sig_fis_received(u32 irq_status)
2690 {
2691 return irq_status & PHYEV_SIG_FIS;
2692 }
2693
2694 static void mvs_update_wideport(struct mvs_info *mvi, int i)
2695 {
2696 struct mvs_phy *phy = &mvi->phy[i];
2697 struct mvs_port *port = phy->port;
2698 int j, no;
2699
2700 for_each_phy(port->wide_port_phymap, no, j, mvi->chip->n_phy)
2701 if (no & 1) {
2702 mvs_write_port_cfg_addr(mvi, no, PHYR_WIDE_PORT);
2703 mvs_write_port_cfg_data(mvi, no,
2704 port->wide_port_phymap);
2705 } else {
2706 mvs_write_port_cfg_addr(mvi, no, PHYR_WIDE_PORT);
2707 mvs_write_port_cfg_data(mvi, no, 0);
2708 }
2709 }
2710
2711 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
2712 {
2713 u32 tmp;
2714 struct mvs_phy *phy = &mvi->phy[i];
2715 struct mvs_port *port = phy->port;;
2716
2717 tmp = mvs_read_phy_ctl(mvi, i);
2718
2719 if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
2720 if (!port)
2721 phy->phy_attached = 1;
2722 return tmp;
2723 }
2724
2725 if (port) {
2726 if (phy->phy_type & PORT_TYPE_SAS) {
2727 port->wide_port_phymap &= ~(1U << i);
2728 if (!port->wide_port_phymap)
2729 port->port_attached = 0;
2730 mvs_update_wideport(mvi, i);
2731 } else if (phy->phy_type & PORT_TYPE_SATA)
2732 port->port_attached = 0;
2733 mvs_free_reg_set(mvi, phy->port);
2734 phy->port = NULL;
2735 phy->phy_attached = 0;
2736 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
2737 }
2738 return 0;
2739 }
2740
2741 static void mvs_update_phyinfo(struct mvs_info *mvi, int i,
2742 int get_st)
2743 {
2744 struct mvs_phy *phy = &mvi->phy[i];
2745 struct pci_dev *pdev = mvi->pdev;
2746 u32 tmp;
2747 u64 tmp64;
2748
2749 mvs_write_port_cfg_addr(mvi, i, PHYR_IDENTIFY);
2750 phy->dev_info = mvs_read_port_cfg_data(mvi, i);
2751
2752 mvs_write_port_cfg_addr(mvi, i, PHYR_ADDR_HI);
2753 phy->dev_sas_addr = (u64) mvs_read_port_cfg_data(mvi, i) << 32;
2754
2755 mvs_write_port_cfg_addr(mvi, i, PHYR_ADDR_LO);
2756 phy->dev_sas_addr |= mvs_read_port_cfg_data(mvi, i);
2757
2758 if (get_st) {
2759 phy->irq_status = mvs_read_port_irq_stat(mvi, i);
2760 phy->phy_status = mvs_is_phy_ready(mvi, i);
2761 }
2762
2763 if (phy->phy_status) {
2764 u32 phy_st;
2765 struct asd_sas_phy *sas_phy = mvi->sas.sas_phy[i];
2766
2767 mvs_write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
2768 phy_st = mvs_read_port_cfg_data(mvi, i);
2769
2770 sas_phy->linkrate =
2771 (phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
2772 PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET;
2773 phy->minimum_linkrate =
2774 (phy->phy_status &
2775 PHY_MIN_SPP_PHYS_LINK_RATE_MASK) >> 8;
2776 phy->maximum_linkrate =
2777 (phy->phy_status &
2778 PHY_MAX_SPP_PHYS_LINK_RATE_MASK) >> 12;
2779
2780 if (phy->phy_type & PORT_TYPE_SAS) {
2781 /* Updated attached_sas_addr */
2782 mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_HI);
2783 phy->att_dev_sas_addr =
2784 (u64) mvs_read_port_cfg_data(mvi, i) << 32;
2785 mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_LO);
2786 phy->att_dev_sas_addr |= mvs_read_port_cfg_data(mvi, i);
2787 mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_DEV_INFO);
2788 phy->att_dev_info = mvs_read_port_cfg_data(mvi, i);
2789 phy->identify.device_type =
2790 phy->att_dev_info & PORT_DEV_TYPE_MASK;
2791
2792 if (phy->identify.device_type == SAS_END_DEV)
2793 phy->identify.target_port_protocols =
2794 SAS_PROTOCOL_SSP;
2795 else if (phy->identify.device_type != NO_DEVICE)
2796 phy->identify.target_port_protocols =
2797 SAS_PROTOCOL_SMP;
2798 if (phy_st & PHY_OOB_DTCTD)
2799 sas_phy->oob_mode = SAS_OOB_MODE;
2800 phy->frame_rcvd_size =
2801 sizeof(struct sas_identify_frame);
2802 } else if (phy->phy_type & PORT_TYPE_SATA) {
2803 phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
2804 if (mvs_is_sig_fis_received(phy->irq_status)) {
2805 phy->att_dev_sas_addr = i; /* temp */
2806 if (phy_st & PHY_OOB_DTCTD)
2807 sas_phy->oob_mode = SATA_OOB_MODE;
2808 phy->frame_rcvd_size =
2809 sizeof(struct dev_to_host_fis);
2810 mvs_get_d2h_reg(mvi, i,
2811 (void *)sas_phy->frame_rcvd);
2812 } else {
2813 dev_printk(KERN_DEBUG, &pdev->dev,
2814 "No sig fis\n");
2815 phy->phy_type &= ~(PORT_TYPE_SATA);
2816 goto out_done;
2817 }
2818 }
2819 tmp64 = cpu_to_be64(phy->att_dev_sas_addr);
2820 memcpy(sas_phy->attached_sas_addr, &tmp64, SAS_ADDR_SIZE);
2821
2822 dev_printk(KERN_DEBUG, &pdev->dev,
2823 "phy[%d] Get Attached Address 0x%llX ,"
2824 " SAS Address 0x%llX\n",
2825 i, phy->att_dev_sas_addr, phy->dev_sas_addr);
2826 dev_printk(KERN_DEBUG, &pdev->dev,
2827 "Rate = %x , type = %d\n",
2828 sas_phy->linkrate, phy->phy_type);
2829
2830 /* workaround for HW phy decoding error on 1.5g disk drive */
2831 mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE6);
2832 tmp = mvs_read_port_vsr_data(mvi, i);
2833 if (((phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
2834 PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET) ==
2835 SAS_LINK_RATE_1_5_GBPS)
2836 tmp &= ~PHY_MODE6_LATECLK;
2837 else
2838 tmp |= PHY_MODE6_LATECLK;
2839 mvs_write_port_vsr_data(mvi, i, tmp);
2840
2841 }
2842 out_done:
2843 if (get_st)
2844 mvs_write_port_irq_stat(mvi, i, phy->irq_status);
2845 }
2846
2847 static void mvs_port_formed(struct asd_sas_phy *sas_phy)
2848 {
2849 struct sas_ha_struct *sas_ha = sas_phy->ha;
2850 struct mvs_info *mvi = sas_ha->lldd_ha;
2851 struct asd_sas_port *sas_port = sas_phy->port;
2852 struct mvs_phy *phy = sas_phy->lldd_phy;
2853 struct mvs_port *port = &mvi->port[sas_port->id];
2854 unsigned long flags;
2855
2856 spin_lock_irqsave(&mvi->lock, flags);
2857 port->port_attached = 1;
2858 phy->port = port;
2859 port->taskfileset = MVS_ID_NOT_MAPPED;
2860 if (phy->phy_type & PORT_TYPE_SAS) {
2861 port->wide_port_phymap = sas_port->phy_mask;
2862 mvs_update_wideport(mvi, sas_phy->id);
2863 }
2864 spin_unlock_irqrestore(&mvi->lock, flags);
2865 }
2866
2867 static int mvs_I_T_nexus_reset(struct domain_device *dev)
2868 {
2869 return TMF_RESP_FUNC_FAILED;
2870 }
2871
2872 static int __devinit mvs_hw_init(struct mvs_info *mvi)
2873 {
2874 void __iomem *regs = mvi->regs;
2875 int i;
2876 u32 tmp, cctl;
2877
2878 /* make sure interrupts are masked immediately (paranoia) */
2879 mw32(GBL_CTL, 0);
2880 tmp = mr32(GBL_CTL);
2881
2882 /* Reset Controller */
2883 if (!(tmp & HBA_RST)) {
2884 if (mvi->flags & MVF_PHY_PWR_FIX) {
2885 pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
2886 tmp &= ~PCTL_PWR_ON;
2887 tmp |= PCTL_OFF;
2888 pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
2889
2890 pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
2891 tmp &= ~PCTL_PWR_ON;
2892 tmp |= PCTL_OFF;
2893 pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
2894 }
2895
2896 /* global reset, incl. COMRESET/H_RESET_N (self-clearing) */
2897 mw32_f(GBL_CTL, HBA_RST);
2898 }
2899
2900 /* wait for reset to finish; timeout is just a guess */
2901 i = 1000;
2902 while (i-- > 0) {
2903 msleep(10);
2904
2905 if (!(mr32(GBL_CTL) & HBA_RST))
2906 break;
2907 }
2908 if (mr32(GBL_CTL) & HBA_RST) {
2909 dev_printk(KERN_ERR, &mvi->pdev->dev, "HBA reset failed\n");
2910 return -EBUSY;
2911 }
2912
2913 /* Init Chip */
2914 /* make sure RST is set; HBA_RST /should/ have done that for us */
2915 cctl = mr32(CTL);
2916 if (cctl & CCTL_RST)
2917 cctl &= ~CCTL_RST;
2918 else
2919 mw32_f(CTL, cctl | CCTL_RST);
2920
2921 /* write to device control _AND_ device status register? - A.C. */
2922 pci_read_config_dword(mvi->pdev, PCR_DEV_CTRL, &tmp);
2923 tmp &= ~PRD_REQ_MASK;
2924 tmp |= PRD_REQ_SIZE;
2925 pci_write_config_dword(mvi->pdev, PCR_DEV_CTRL, tmp);
2926
2927 pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
2928 tmp |= PCTL_PWR_ON;
2929 tmp &= ~PCTL_OFF;
2930 pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
2931
2932 pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
2933 tmp |= PCTL_PWR_ON;
2934 tmp &= ~PCTL_OFF;
2935 pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
2936
2937 mw32_f(CTL, cctl);
2938
2939 /* reset control */
2940 mw32(PCS, 0); /*MVS_PCS */
2941
2942 mvs_phy_hacks(mvi);
2943
2944 mw32(CMD_LIST_LO, mvi->slot_dma);
2945 mw32(CMD_LIST_HI, (mvi->slot_dma >> 16) >> 16);
2946
2947 mw32(RX_FIS_LO, mvi->rx_fis_dma);
2948 mw32(RX_FIS_HI, (mvi->rx_fis_dma >> 16) >> 16);
2949
2950 mw32(TX_CFG, MVS_CHIP_SLOT_SZ);
2951 mw32(TX_LO, mvi->tx_dma);
2952 mw32(TX_HI, (mvi->tx_dma >> 16) >> 16);
2953
2954 mw32(RX_CFG, MVS_RX_RING_SZ);
2955 mw32(RX_LO, mvi->rx_dma);
2956 mw32(RX_HI, (mvi->rx_dma >> 16) >> 16);
2957
2958 /* enable auto port detection */
2959 mw32(GBL_PORT_TYPE, MODE_AUTO_DET_EN);
2960 msleep(100);
2961 /* init and reset phys */
2962 for (i = 0; i < mvi->chip->n_phy; i++) {
2963 u32 lo = be32_to_cpu(*(u32 *)&mvi->sas_addr[4]);
2964 u32 hi = be32_to_cpu(*(u32 *)&mvi->sas_addr[0]);
2965
2966 mvs_detect_porttype(mvi, i);
2967
2968 /* set phy local SAS address */
2969 mvs_write_port_cfg_addr(mvi, i, PHYR_ADDR_LO);
2970 mvs_write_port_cfg_data(mvi, i, lo);
2971 mvs_write_port_cfg_addr(mvi, i, PHYR_ADDR_HI);
2972 mvs_write_port_cfg_data(mvi, i, hi);
2973
2974 /* reset phy */
2975 tmp = mvs_read_phy_ctl(mvi, i);
2976 tmp |= PHY_RST;
2977 mvs_write_phy_ctl(mvi, i, tmp);
2978 }
2979
2980 msleep(100);
2981
2982 for (i = 0; i < mvi->chip->n_phy; i++) {
2983 /* clear phy int status */
2984 tmp = mvs_read_port_irq_stat(mvi, i);
2985 tmp &= ~PHYEV_SIG_FIS;
2986 mvs_write_port_irq_stat(mvi, i, tmp);
2987
2988 /* set phy int mask */
2989 tmp = PHYEV_RDY_CH | PHYEV_BROAD_CH | PHYEV_UNASSOC_FIS |
2990 PHYEV_ID_DONE | PHYEV_DEC_ERR;
2991 mvs_write_port_irq_mask(mvi, i, tmp);
2992
2993 msleep(100);
2994 mvs_update_phyinfo(mvi, i, 1);
2995 mvs_enable_xmt(mvi, i);
2996 }
2997
2998 /* FIXME: update wide port bitmaps */
2999
3000 /* little endian for open address and command table, etc. */
3001 /* A.C.
3002 * it seems that ( from the spec ) turning on big-endian won't
3003 * do us any good on big-endian machines, need further confirmation
3004 */
3005 cctl = mr32(CTL);
3006 cctl |= CCTL_ENDIAN_CMD;
3007 cctl |= CCTL_ENDIAN_DATA;
3008 cctl &= ~CCTL_ENDIAN_OPEN;
3009 cctl |= CCTL_ENDIAN_RSP;
3010 mw32_f(CTL, cctl);
3011
3012 /* reset CMD queue */
3013 tmp = mr32(PCS);
3014 tmp |= PCS_CMD_RST;
3015 mw32(PCS, tmp);
3016 /* interrupt coalescing may cause missing HW interrput in some case,
3017 * and the max count is 0x1ff, while our max slot is 0x200,
3018 * it will make count 0.
3019 */
3020 tmp = 0;
3021 mw32(INT_COAL, tmp);
3022
3023 tmp = 0x100;
3024 mw32(INT_COAL_TMOUT, tmp);
3025
3026 /* ladies and gentlemen, start your engines */
3027 mw32(TX_CFG, 0);
3028 mw32(TX_CFG, MVS_CHIP_SLOT_SZ | TX_EN);
3029 mw32(RX_CFG, MVS_RX_RING_SZ | RX_EN);
3030 /* enable CMD/CMPL_Q/RESP mode */
3031 mw32(PCS, PCS_SATA_RETRY | PCS_FIS_RX_EN | PCS_CMD_EN);
3032
3033 /* enable completion queue interrupt */
3034 tmp = (CINT_PORT_MASK | CINT_DONE | CINT_MEM | CINT_SRS);
3035 mw32(INT_MASK, tmp);
3036
3037 /* Enable SRS interrupt */
3038 mw32(INT_MASK_SRS, 0xFF);
3039 return 0;
3040 }
3041
3042 static void __devinit mvs_print_info(struct mvs_info *mvi)
3043 {
3044 struct pci_dev *pdev = mvi->pdev;
3045 static int printed_version;
3046
3047 if (!printed_version++)
3048 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
3049
3050 dev_printk(KERN_INFO, &pdev->dev, "%u phys, addr %llx\n",
3051 mvi->chip->n_phy, SAS_ADDR(mvi->sas_addr));
3052 }
3053
3054 static int __devinit mvs_pci_init(struct pci_dev *pdev,
3055 const struct pci_device_id *ent)
3056 {
3057 int rc;
3058 struct mvs_info *mvi;
3059 irq_handler_t irq_handler = mvs_interrupt;
3060
3061 rc = pci_enable_device(pdev);
3062 if (rc)
3063 return rc;
3064
3065 pci_set_master(pdev);
3066
3067 rc = pci_request_regions(pdev, DRV_NAME);
3068 if (rc)
3069 goto err_out_disable;
3070
3071 rc = pci_go_64(pdev);
3072 if (rc)
3073 goto err_out_regions;
3074
3075 mvi = mvs_alloc(pdev, ent);
3076 if (!mvi) {
3077 rc = -ENOMEM;
3078 goto err_out_regions;
3079 }
3080
3081 rc = mvs_hw_init(mvi);
3082 if (rc)
3083 goto err_out_mvi;
3084
3085 #ifndef MVS_DISABLE_MSI
3086 if (!pci_enable_msi(pdev)) {
3087 u32 tmp;
3088 void __iomem *regs = mvi->regs;
3089 mvi->flags |= MVF_MSI;
3090 irq_handler = mvs_msi_interrupt;
3091 tmp = mr32(PCS);
3092 mw32(PCS, tmp | PCS_SELF_CLEAR);
3093 }
3094 #endif
3095
3096 rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED, DRV_NAME, mvi);
3097 if (rc)
3098 goto err_out_msi;
3099
3100 rc = scsi_add_host(mvi->shost, &pdev->dev);
3101 if (rc)
3102 goto err_out_irq;
3103
3104 rc = sas_register_ha(&mvi->sas);
3105 if (rc)
3106 goto err_out_shost;
3107
3108 pci_set_drvdata(pdev, mvi);
3109
3110 mvs_print_info(mvi);
3111
3112 mvs_hba_interrupt_enable(mvi);
3113
3114 scsi_scan_host(mvi->shost);
3115
3116 return 0;
3117
3118 err_out_shost:
3119 scsi_remove_host(mvi->shost);
3120 err_out_irq:
3121 free_irq(pdev->irq, mvi);
3122 err_out_msi:
3123 if (mvi->flags |= MVF_MSI)
3124 pci_disable_msi(pdev);
3125 err_out_mvi:
3126 mvs_free(mvi);
3127 err_out_regions:
3128 pci_release_regions(pdev);
3129 err_out_disable:
3130 pci_disable_device(pdev);
3131 return rc;
3132 }
3133
3134 static void __devexit mvs_pci_remove(struct pci_dev *pdev)
3135 {
3136 struct mvs_info *mvi = pci_get_drvdata(pdev);
3137
3138 pci_set_drvdata(pdev, NULL);
3139
3140 if (mvi) {
3141 sas_unregister_ha(&mvi->sas);
3142 mvs_hba_interrupt_disable(mvi);
3143 sas_remove_host(mvi->shost);
3144 scsi_remove_host(mvi->shost);
3145
3146 free_irq(pdev->irq, mvi);
3147 if (mvi->flags & MVF_MSI)
3148 pci_disable_msi(pdev);
3149 mvs_free(mvi);
3150 pci_release_regions(pdev);
3151 }
3152 pci_disable_device(pdev);
3153 }
3154
3155 static struct sas_domain_function_template mvs_transport_ops = {
3156 .lldd_execute_task = mvs_task_exec,
3157 .lldd_control_phy = mvs_phy_control,
3158 .lldd_abort_task = mvs_task_abort,
3159 .lldd_port_formed = mvs_port_formed,
3160 .lldd_I_T_nexus_reset = mvs_I_T_nexus_reset,
3161 };
3162
3163 static struct pci_device_id __devinitdata mvs_pci_table[] = {
3164 { PCI_VDEVICE(MARVELL, 0x6320), chip_6320 },
3165 { PCI_VDEVICE(MARVELL, 0x6340), chip_6440 },
3166 {
3167 .vendor = PCI_VENDOR_ID_MARVELL,
3168 .device = 0x6440,
3169 .subvendor = PCI_ANY_ID,
3170 .subdevice = 0x6480,
3171 .class = 0,
3172 .class_mask = 0,
3173 .driver_data = chip_6480,
3174 },
3175 { PCI_VDEVICE(MARVELL, 0x6440), chip_6440 },
3176 { PCI_VDEVICE(MARVELL, 0x6480), chip_6480 },
3177
3178 { } /* terminate list */
3179 };
3180
3181 static struct pci_driver mvs_pci_driver = {
3182 .name = DRV_NAME,
3183 .id_table = mvs_pci_table,
3184 .probe = mvs_pci_init,
3185 .remove = __devexit_p(mvs_pci_remove),
3186 };
3187
3188 static int __init mvs_init(void)
3189 {
3190 int rc;
3191
3192 mvs_stt = sas_domain_attach_transport(&mvs_transport_ops);
3193 if (!mvs_stt)
3194 return -ENOMEM;
3195
3196 rc = pci_register_driver(&mvs_pci_driver);
3197 if (rc)
3198 goto err_out;
3199
3200 return 0;
3201
3202 err_out:
3203 sas_release_transport(mvs_stt);
3204 return rc;
3205 }
3206
3207 static void __exit mvs_exit(void)
3208 {
3209 pci_unregister_driver(&mvs_pci_driver);
3210 sas_release_transport(mvs_stt);
3211 }
3212
3213 module_init(mvs_init);
3214 module_exit(mvs_exit);
3215
3216 MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
3217 MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
3218 MODULE_VERSION(DRV_VERSION);
3219 MODULE_LICENSE("GPL");
3220 MODULE_DEVICE_TABLE(pci, mvs_pci_table);
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