2 * sata_mv.c - Marvell SATA support
4 * Copyright 2008-2009: Marvell Corporation, all rights reserved.
5 * Copyright 2005: EMC Corporation, all rights reserved.
6 * Copyright 2005 Red Hat, Inc. All rights reserved.
8 * Originally written by Brett Russ.
9 * Extensive overhaul and enhancement by Mark Lord <mlord@pobox.com>.
11 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; version 2 of the License.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 * --> Develop a low-power-consumption strategy, and implement it.
33 * --> Add sysfs attributes for per-chip / per-HC IRQ coalescing thresholds.
35 * --> [Experiment, Marvell value added] Is it possible to use target
36 * mode to cross-connect two Linux boxes with Marvell cards? If so,
37 * creating LibATA target mode support would be very interesting.
39 * Target mode, for those without docs, is the ability to directly
40 * connect two SATA ports.
44 * 80x1-B2 errata PCI#11:
46 * Users of the 6041/6081 Rev.B2 chips (current is C0)
47 * should be careful to insert those cards only onto PCI-X bus #0,
48 * and only in device slots 0..7, not higher. The chips may not
49 * work correctly otherwise (note: this is a pretty rare condition).
52 #include <linux/kernel.h>
53 #include <linux/module.h>
54 #include <linux/pci.h>
55 #include <linux/init.h>
56 #include <linux/blkdev.h>
57 #include <linux/delay.h>
58 #include <linux/interrupt.h>
59 #include <linux/dmapool.h>
60 #include <linux/dma-mapping.h>
61 #include <linux/device.h>
62 #include <linux/platform_device.h>
63 #include <linux/ata_platform.h>
64 #include <linux/mbus.h>
65 #include <linux/bitops.h>
66 #include <scsi/scsi_host.h>
67 #include <scsi/scsi_cmnd.h>
68 #include <scsi/scsi_device.h>
69 #include <linux/libata.h>
71 #define DRV_NAME "sata_mv"
72 #define DRV_VERSION "1.28"
80 module_param(msi
, int, S_IRUGO
);
81 MODULE_PARM_DESC(msi
, "Enable use of PCI MSI (0=off, 1=on)");
84 static int irq_coalescing_io_count
;
85 module_param(irq_coalescing_io_count
, int, S_IRUGO
);
86 MODULE_PARM_DESC(irq_coalescing_io_count
,
87 "IRQ coalescing I/O count threshold (0..255)");
89 static int irq_coalescing_usecs
;
90 module_param(irq_coalescing_usecs
, int, S_IRUGO
);
91 MODULE_PARM_DESC(irq_coalescing_usecs
,
92 "IRQ coalescing time threshold in usecs");
95 /* BAR's are enumerated in terms of pci_resource_start() terms */
96 MV_PRIMARY_BAR
= 0, /* offset 0x10: memory space */
97 MV_IO_BAR
= 2, /* offset 0x18: IO space */
98 MV_MISC_BAR
= 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
100 MV_MAJOR_REG_AREA_SZ
= 0x10000, /* 64KB */
101 MV_MINOR_REG_AREA_SZ
= 0x2000, /* 8KB */
103 /* For use with both IRQ coalescing methods ("all ports" or "per-HC" */
104 COAL_CLOCKS_PER_USEC
= 150, /* for calculating COAL_TIMEs */
105 MAX_COAL_TIME_THRESHOLD
= ((1 << 24) - 1), /* internal clocks count */
106 MAX_COAL_IO_COUNT
= 255, /* completed I/O count */
111 * Per-chip ("all ports") interrupt coalescing feature.
112 * This is only for GEN_II / GEN_IIE hardware.
114 * Coalescing defers the interrupt until either the IO_THRESHOLD
115 * (count of completed I/Os) is met, or the TIME_THRESHOLD is met.
117 COAL_REG_BASE
= 0x18000,
118 IRQ_COAL_CAUSE
= (COAL_REG_BASE
+ 0x08),
119 ALL_PORTS_COAL_IRQ
= (1 << 4), /* all ports irq event */
121 IRQ_COAL_IO_THRESHOLD
= (COAL_REG_BASE
+ 0xcc),
122 IRQ_COAL_TIME_THRESHOLD
= (COAL_REG_BASE
+ 0xd0),
125 * Registers for the (unused here) transaction coalescing feature:
127 TRAN_COAL_CAUSE_LO
= (COAL_REG_BASE
+ 0x88),
128 TRAN_COAL_CAUSE_HI
= (COAL_REG_BASE
+ 0x8c),
130 SATAHC0_REG_BASE
= 0x20000,
132 GPIO_PORT_CTL
= 0x104f0,
135 MV_PCI_REG_SZ
= MV_MAJOR_REG_AREA_SZ
,
136 MV_SATAHC_REG_SZ
= MV_MAJOR_REG_AREA_SZ
,
137 MV_SATAHC_ARBTR_REG_SZ
= MV_MINOR_REG_AREA_SZ
, /* arbiter */
138 MV_PORT_REG_SZ
= MV_MINOR_REG_AREA_SZ
,
141 MV_MAX_Q_DEPTH_MASK
= MV_MAX_Q_DEPTH
- 1,
143 /* CRQB needs alignment on a 1KB boundary. Size == 1KB
144 * CRPB needs alignment on a 256B boundary. Size == 256B
145 * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
147 MV_CRQB_Q_SZ
= (32 * MV_MAX_Q_DEPTH
),
148 MV_CRPB_Q_SZ
= (8 * MV_MAX_Q_DEPTH
),
150 MV_SG_TBL_SZ
= (16 * MV_MAX_SG_CT
),
152 /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */
153 MV_PORT_HC_SHIFT
= 2,
154 MV_PORTS_PER_HC
= (1 << MV_PORT_HC_SHIFT
), /* 4 */
155 /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */
156 MV_PORT_MASK
= (MV_PORTS_PER_HC
- 1), /* 3 */
159 MV_FLAG_DUAL_HC
= (1 << 30), /* two SATA Host Controllers */
161 MV_COMMON_FLAGS
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
162 ATA_FLAG_MMIO
| ATA_FLAG_PIO_POLLING
,
164 MV_GEN_I_FLAGS
= MV_COMMON_FLAGS
| ATA_FLAG_NO_ATAPI
,
166 MV_GEN_II_FLAGS
= MV_COMMON_FLAGS
| ATA_FLAG_NCQ
|
167 ATA_FLAG_PMP
| ATA_FLAG_ACPI_SATA
,
169 MV_GEN_IIE_FLAGS
= MV_GEN_II_FLAGS
| ATA_FLAG_AN
,
171 CRQB_FLAG_READ
= (1 << 0),
173 CRQB_IOID_SHIFT
= 6, /* CRQB Gen-II/IIE IO Id shift */
174 CRQB_PMP_SHIFT
= 12, /* CRQB Gen-II/IIE PMP shift */
175 CRQB_HOSTQ_SHIFT
= 17, /* CRQB Gen-II/IIE HostQueTag shift */
176 CRQB_CMD_ADDR_SHIFT
= 8,
177 CRQB_CMD_CS
= (0x2 << 11),
178 CRQB_CMD_LAST
= (1 << 15),
180 CRPB_FLAG_STATUS_SHIFT
= 8,
181 CRPB_IOID_SHIFT_6
= 5, /* CRPB Gen-II IO Id shift */
182 CRPB_IOID_SHIFT_7
= 7, /* CRPB Gen-IIE IO Id shift */
184 EPRD_FLAG_END_OF_TBL
= (1 << 31),
186 /* PCI interface registers */
188 MV_PCI_COMMAND
= 0xc00,
189 MV_PCI_COMMAND_MWRCOM
= (1 << 4), /* PCI Master Write Combining */
190 MV_PCI_COMMAND_MRDTRIG
= (1 << 7), /* PCI Master Read Trigger */
192 PCI_MAIN_CMD_STS
= 0xd30,
193 STOP_PCI_MASTER
= (1 << 2),
194 PCI_MASTER_EMPTY
= (1 << 3),
195 GLOB_SFT_RST
= (1 << 4),
198 MV_PCI_MODE_MASK
= 0x30,
200 MV_PCI_EXP_ROM_BAR_CTL
= 0xd2c,
201 MV_PCI_DISC_TIMER
= 0xd04,
202 MV_PCI_MSI_TRIGGER
= 0xc38,
203 MV_PCI_SERR_MASK
= 0xc28,
204 MV_PCI_XBAR_TMOUT
= 0x1d04,
205 MV_PCI_ERR_LOW_ADDRESS
= 0x1d40,
206 MV_PCI_ERR_HIGH_ADDRESS
= 0x1d44,
207 MV_PCI_ERR_ATTRIBUTE
= 0x1d48,
208 MV_PCI_ERR_COMMAND
= 0x1d50,
210 PCI_IRQ_CAUSE
= 0x1d58,
211 PCI_IRQ_MASK
= 0x1d5c,
212 PCI_UNMASK_ALL_IRQS
= 0x7fffff, /* bits 22-0 */
214 PCIE_IRQ_CAUSE
= 0x1900,
215 PCIE_IRQ_MASK
= 0x1910,
216 PCIE_UNMASK_ALL_IRQS
= 0x40a, /* assorted bits */
218 /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */
219 PCI_HC_MAIN_IRQ_CAUSE
= 0x1d60,
220 PCI_HC_MAIN_IRQ_MASK
= 0x1d64,
221 SOC_HC_MAIN_IRQ_CAUSE
= 0x20020,
222 SOC_HC_MAIN_IRQ_MASK
= 0x20024,
223 ERR_IRQ
= (1 << 0), /* shift by (2 * port #) */
224 DONE_IRQ
= (1 << 1), /* shift by (2 * port #) */
225 HC0_IRQ_PEND
= 0x1ff, /* bits 0-8 = HC0's ports */
226 HC_SHIFT
= 9, /* bits 9-17 = HC1's ports */
227 DONE_IRQ_0_3
= 0x000000aa, /* DONE_IRQ ports 0,1,2,3 */
228 DONE_IRQ_4_7
= (DONE_IRQ_0_3
<< HC_SHIFT
), /* 4,5,6,7 */
230 TRAN_COAL_LO_DONE
= (1 << 19), /* transaction coalescing */
231 TRAN_COAL_HI_DONE
= (1 << 20), /* transaction coalescing */
232 PORTS_0_3_COAL_DONE
= (1 << 8), /* HC0 IRQ coalescing */
233 PORTS_4_7_COAL_DONE
= (1 << 17), /* HC1 IRQ coalescing */
234 ALL_PORTS_COAL_DONE
= (1 << 21), /* GEN_II(E) IRQ coalescing */
235 GPIO_INT
= (1 << 22),
236 SELF_INT
= (1 << 23),
237 TWSI_INT
= (1 << 24),
238 HC_MAIN_RSVD
= (0x7f << 25), /* bits 31-25 */
239 HC_MAIN_RSVD_5
= (0x1fff << 19), /* bits 31-19 */
240 HC_MAIN_RSVD_SOC
= (0x3fffffb << 6), /* bits 31-9, 7-6 */
242 /* SATAHC registers */
246 DMA_IRQ
= (1 << 0), /* shift by port # */
247 HC_COAL_IRQ
= (1 << 4), /* IRQ coalescing */
248 DEV_IRQ
= (1 << 8), /* shift by port # */
251 * Per-HC (Host-Controller) interrupt coalescing feature.
252 * This is present on all chip generations.
254 * Coalescing defers the interrupt until either the IO_THRESHOLD
255 * (count of completed I/Os) is met, or the TIME_THRESHOLD is met.
257 HC_IRQ_COAL_IO_THRESHOLD
= 0x000c,
258 HC_IRQ_COAL_TIME_THRESHOLD
= 0x0010,
261 SOC_LED_CTRL_BLINK
= (1 << 0), /* Active LED blink */
262 SOC_LED_CTRL_ACT_PRESENCE
= (1 << 2), /* Multiplex dev presence */
263 /* with dev activity LED */
265 /* Shadow block registers */
267 SHD_CTL_AST
= 0x20, /* ofs from SHD_BLK */
270 SATA_STATUS
= 0x300, /* ctrl, err regs follow status */
272 FIS_IRQ_CAUSE
= 0x364,
273 FIS_IRQ_CAUSE_AN
= (1 << 9), /* async notification */
275 LTMODE
= 0x30c, /* requires read-after-write */
276 LTMODE_BIT8
= (1 << 8), /* unknown, but necessary */
281 PHY_MODE4
= 0x314, /* requires read-after-write */
282 PHY_MODE4_CFG_MASK
= 0x00000003, /* phy internal config field */
283 PHY_MODE4_CFG_VALUE
= 0x00000001, /* phy internal config field */
284 PHY_MODE4_RSVD_ZEROS
= 0x5de3fffa, /* Gen2e always write zeros */
285 PHY_MODE4_RSVD_ONES
= 0x00000005, /* Gen2e always write ones */
288 SATA_TESTCTL
= 0x348,
290 VENDOR_UNIQUE_FIS
= 0x35c,
293 FISCFG_WAIT_DEV_ERR
= (1 << 8), /* wait for host on DevErr */
294 FISCFG_SINGLE_SYNC
= (1 << 16), /* SYNC on DMA activation */
301 MV_M2_PREAMP_MASK
= 0x7e0,
305 EDMA_CFG_Q_DEPTH
= 0x1f, /* max device queue depth */
306 EDMA_CFG_NCQ
= (1 << 5), /* for R/W FPDMA queued */
307 EDMA_CFG_NCQ_GO_ON_ERR
= (1 << 14), /* continue on error */
308 EDMA_CFG_RD_BRST_EXT
= (1 << 11), /* read burst 512B */
309 EDMA_CFG_WR_BUFF_LEN
= (1 << 13), /* write buffer 512B */
310 EDMA_CFG_EDMA_FBS
= (1 << 16), /* EDMA FIS-Based Switching */
311 EDMA_CFG_FBS
= (1 << 26), /* FIS-Based Switching */
313 EDMA_ERR_IRQ_CAUSE
= 0x8,
314 EDMA_ERR_IRQ_MASK
= 0xc,
315 EDMA_ERR_D_PAR
= (1 << 0), /* UDMA data parity err */
316 EDMA_ERR_PRD_PAR
= (1 << 1), /* UDMA PRD parity err */
317 EDMA_ERR_DEV
= (1 << 2), /* device error */
318 EDMA_ERR_DEV_DCON
= (1 << 3), /* device disconnect */
319 EDMA_ERR_DEV_CON
= (1 << 4), /* device connected */
320 EDMA_ERR_SERR
= (1 << 5), /* SError bits [WBDST] raised */
321 EDMA_ERR_SELF_DIS
= (1 << 7), /* Gen II/IIE self-disable */
322 EDMA_ERR_SELF_DIS_5
= (1 << 8), /* Gen I self-disable */
323 EDMA_ERR_BIST_ASYNC
= (1 << 8), /* BIST FIS or Async Notify */
324 EDMA_ERR_TRANS_IRQ_7
= (1 << 8), /* Gen IIE transprt layer irq */
325 EDMA_ERR_CRQB_PAR
= (1 << 9), /* CRQB parity error */
326 EDMA_ERR_CRPB_PAR
= (1 << 10), /* CRPB parity error */
327 EDMA_ERR_INTRL_PAR
= (1 << 11), /* internal parity error */
328 EDMA_ERR_IORDY
= (1 << 12), /* IORdy timeout */
330 EDMA_ERR_LNK_CTRL_RX
= (0xf << 13), /* link ctrl rx error */
331 EDMA_ERR_LNK_CTRL_RX_0
= (1 << 13), /* transient: CRC err */
332 EDMA_ERR_LNK_CTRL_RX_1
= (1 << 14), /* transient: FIFO err */
333 EDMA_ERR_LNK_CTRL_RX_2
= (1 << 15), /* fatal: caught SYNC */
334 EDMA_ERR_LNK_CTRL_RX_3
= (1 << 16), /* transient: FIS rx err */
336 EDMA_ERR_LNK_DATA_RX
= (0xf << 17), /* link data rx error */
338 EDMA_ERR_LNK_CTRL_TX
= (0x1f << 21), /* link ctrl tx error */
339 EDMA_ERR_LNK_CTRL_TX_0
= (1 << 21), /* transient: CRC err */
340 EDMA_ERR_LNK_CTRL_TX_1
= (1 << 22), /* transient: FIFO err */
341 EDMA_ERR_LNK_CTRL_TX_2
= (1 << 23), /* transient: caught SYNC */
342 EDMA_ERR_LNK_CTRL_TX_3
= (1 << 24), /* transient: caught DMAT */
343 EDMA_ERR_LNK_CTRL_TX_4
= (1 << 25), /* transient: FIS collision */
345 EDMA_ERR_LNK_DATA_TX
= (0x1f << 26), /* link data tx error */
347 EDMA_ERR_TRANS_PROTO
= (1 << 31), /* transport protocol error */
348 EDMA_ERR_OVERRUN_5
= (1 << 5),
349 EDMA_ERR_UNDERRUN_5
= (1 << 6),
351 EDMA_ERR_IRQ_TRANSIENT
= EDMA_ERR_LNK_CTRL_RX_0
|
352 EDMA_ERR_LNK_CTRL_RX_1
|
353 EDMA_ERR_LNK_CTRL_RX_3
|
354 EDMA_ERR_LNK_CTRL_TX
,
356 EDMA_EH_FREEZE
= EDMA_ERR_D_PAR
|
366 EDMA_ERR_LNK_CTRL_RX_2
|
367 EDMA_ERR_LNK_DATA_RX
|
368 EDMA_ERR_LNK_DATA_TX
|
369 EDMA_ERR_TRANS_PROTO
,
371 EDMA_EH_FREEZE_5
= EDMA_ERR_D_PAR
|
376 EDMA_ERR_UNDERRUN_5
|
377 EDMA_ERR_SELF_DIS_5
|
383 EDMA_REQ_Q_BASE_HI
= 0x10,
384 EDMA_REQ_Q_IN_PTR
= 0x14, /* also contains BASE_LO */
386 EDMA_REQ_Q_OUT_PTR
= 0x18,
387 EDMA_REQ_Q_PTR_SHIFT
= 5,
389 EDMA_RSP_Q_BASE_HI
= 0x1c,
390 EDMA_RSP_Q_IN_PTR
= 0x20,
391 EDMA_RSP_Q_OUT_PTR
= 0x24, /* also contains BASE_LO */
392 EDMA_RSP_Q_PTR_SHIFT
= 3,
394 EDMA_CMD
= 0x28, /* EDMA command register */
395 EDMA_EN
= (1 << 0), /* enable EDMA */
396 EDMA_DS
= (1 << 1), /* disable EDMA; self-negated */
397 EDMA_RESET
= (1 << 2), /* reset eng/trans/link/phy */
399 EDMA_STATUS
= 0x30, /* EDMA engine status */
400 EDMA_STATUS_CACHE_EMPTY
= (1 << 6), /* GenIIe command cache empty */
401 EDMA_STATUS_IDLE
= (1 << 7), /* GenIIe EDMA enabled/idle */
403 EDMA_IORDY_TMOUT
= 0x34,
406 EDMA_HALTCOND
= 0x60, /* GenIIe halt conditions */
407 EDMA_UNKNOWN_RSVD
= 0x6C, /* GenIIe unknown/reserved */
409 BMDMA_CMD
= 0x224, /* bmdma command register */
410 BMDMA_STATUS
= 0x228, /* bmdma status register */
411 BMDMA_PRD_LOW
= 0x22c, /* bmdma PRD addr 31:0 */
412 BMDMA_PRD_HIGH
= 0x230, /* bmdma PRD addr 63:32 */
414 /* Host private flags (hp_flags) */
415 MV_HP_FLAG_MSI
= (1 << 0),
416 MV_HP_ERRATA_50XXB0
= (1 << 1),
417 MV_HP_ERRATA_50XXB2
= (1 << 2),
418 MV_HP_ERRATA_60X1B2
= (1 << 3),
419 MV_HP_ERRATA_60X1C0
= (1 << 4),
420 MV_HP_GEN_I
= (1 << 6), /* Generation I: 50xx */
421 MV_HP_GEN_II
= (1 << 7), /* Generation II: 60xx */
422 MV_HP_GEN_IIE
= (1 << 8), /* Generation IIE: 6042/7042 */
423 MV_HP_PCIE
= (1 << 9), /* PCIe bus/regs: 7042 */
424 MV_HP_CUT_THROUGH
= (1 << 10), /* can use EDMA cut-through */
425 MV_HP_FLAG_SOC
= (1 << 11), /* SystemOnChip, no PCI */
426 MV_HP_QUIRK_LED_BLINK_EN
= (1 << 12), /* is led blinking enabled? */
428 /* Port private flags (pp_flags) */
429 MV_PP_FLAG_EDMA_EN
= (1 << 0), /* is EDMA engine enabled? */
430 MV_PP_FLAG_NCQ_EN
= (1 << 1), /* is EDMA set up for NCQ? */
431 MV_PP_FLAG_FBS_EN
= (1 << 2), /* is EDMA set up for FBS? */
432 MV_PP_FLAG_DELAYED_EH
= (1 << 3), /* delayed dev err handling */
433 MV_PP_FLAG_FAKE_ATA_BUSY
= (1 << 4), /* ignore initial ATA_DRDY */
436 #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I)
437 #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II)
438 #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
439 #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE)
440 #define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC)
442 #define WINDOW_CTRL(i) (0x20030 + ((i) << 4))
443 #define WINDOW_BASE(i) (0x20034 + ((i) << 4))
446 /* DMA boundary 0xffff is required by the s/g splitting
447 * we need on /length/ in mv_fill-sg().
449 MV_DMA_BOUNDARY
= 0xffffU
,
451 /* mask of register bits containing lower 32 bits
452 * of EDMA request queue DMA address
454 EDMA_REQ_Q_BASE_LO_MASK
= 0xfffffc00U
,
456 /* ditto, for response queue */
457 EDMA_RSP_Q_BASE_LO_MASK
= 0xffffff00U
,
471 /* Command ReQuest Block: 32B */
487 /* Command ResPonse Block: 8B */
494 /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
503 * We keep a local cache of a few frequently accessed port
504 * registers here, to avoid having to read them (very slow)
505 * when switching between EDMA and non-EDMA modes.
507 struct mv_cached_regs
{
514 struct mv_port_priv
{
515 struct mv_crqb
*crqb
;
517 struct mv_crpb
*crpb
;
519 struct mv_sg
*sg_tbl
[MV_MAX_Q_DEPTH
];
520 dma_addr_t sg_tbl_dma
[MV_MAX_Q_DEPTH
];
522 unsigned int req_idx
;
523 unsigned int resp_idx
;
526 struct mv_cached_regs cached
;
527 unsigned int delayed_eh_pmp_map
;
530 struct mv_port_signal
{
535 struct mv_host_priv
{
538 struct mv_port_signal signal
[8];
539 const struct mv_hw_ops
*ops
;
542 void __iomem
*main_irq_cause_addr
;
543 void __iomem
*main_irq_mask_addr
;
544 u32 irq_cause_offset
;
548 * These consistent DMA memory pools give us guaranteed
549 * alignment for hardware-accessed data structures,
550 * and less memory waste in accomplishing the alignment.
552 struct dma_pool
*crqb_pool
;
553 struct dma_pool
*crpb_pool
;
554 struct dma_pool
*sg_tbl_pool
;
558 void (*phy_errata
)(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
560 void (*enable_leds
)(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
561 void (*read_preamp
)(struct mv_host_priv
*hpriv
, int idx
,
563 int (*reset_hc
)(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
565 void (*reset_flash
)(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
566 void (*reset_bus
)(struct ata_host
*host
, void __iomem
*mmio
);
569 static int mv_scr_read(struct ata_link
*link
, unsigned int sc_reg_in
, u32
*val
);
570 static int mv_scr_write(struct ata_link
*link
, unsigned int sc_reg_in
, u32 val
);
571 static int mv5_scr_read(struct ata_link
*link
, unsigned int sc_reg_in
, u32
*val
);
572 static int mv5_scr_write(struct ata_link
*link
, unsigned int sc_reg_in
, u32 val
);
573 static int mv_port_start(struct ata_port
*ap
);
574 static void mv_port_stop(struct ata_port
*ap
);
575 static int mv_qc_defer(struct ata_queued_cmd
*qc
);
576 static void mv_qc_prep(struct ata_queued_cmd
*qc
);
577 static void mv_qc_prep_iie(struct ata_queued_cmd
*qc
);
578 static unsigned int mv_qc_issue(struct ata_queued_cmd
*qc
);
579 static int mv_hardreset(struct ata_link
*link
, unsigned int *class,
580 unsigned long deadline
);
581 static void mv_eh_freeze(struct ata_port
*ap
);
582 static void mv_eh_thaw(struct ata_port
*ap
);
583 static void mv6_dev_config(struct ata_device
*dev
);
585 static void mv5_phy_errata(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
587 static void mv5_enable_leds(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
588 static void mv5_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
590 static int mv5_reset_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
592 static void mv5_reset_flash(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
593 static void mv5_reset_bus(struct ata_host
*host
, void __iomem
*mmio
);
595 static void mv6_phy_errata(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
597 static void mv6_enable_leds(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
598 static void mv6_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
600 static int mv6_reset_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
602 static void mv6_reset_flash(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
603 static void mv_soc_enable_leds(struct mv_host_priv
*hpriv
,
605 static void mv_soc_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
607 static int mv_soc_reset_hc(struct mv_host_priv
*hpriv
,
608 void __iomem
*mmio
, unsigned int n_hc
);
609 static void mv_soc_reset_flash(struct mv_host_priv
*hpriv
,
611 static void mv_soc_reset_bus(struct ata_host
*host
, void __iomem
*mmio
);
612 static void mv_reset_pci_bus(struct ata_host
*host
, void __iomem
*mmio
);
613 static void mv_reset_channel(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
614 unsigned int port_no
);
615 static int mv_stop_edma(struct ata_port
*ap
);
616 static int mv_stop_edma_engine(void __iomem
*port_mmio
);
617 static void mv_edma_cfg(struct ata_port
*ap
, int want_ncq
, int want_edma
);
619 static void mv_pmp_select(struct ata_port
*ap
, int pmp
);
620 static int mv_pmp_hardreset(struct ata_link
*link
, unsigned int *class,
621 unsigned long deadline
);
622 static int mv_softreset(struct ata_link
*link
, unsigned int *class,
623 unsigned long deadline
);
624 static void mv_pmp_error_handler(struct ata_port
*ap
);
625 static void mv_process_crpb_entries(struct ata_port
*ap
,
626 struct mv_port_priv
*pp
);
628 static void mv_sff_irq_clear(struct ata_port
*ap
);
629 static int mv_check_atapi_dma(struct ata_queued_cmd
*qc
);
630 static void mv_bmdma_setup(struct ata_queued_cmd
*qc
);
631 static void mv_bmdma_start(struct ata_queued_cmd
*qc
);
632 static void mv_bmdma_stop(struct ata_queued_cmd
*qc
);
633 static u8
mv_bmdma_status(struct ata_port
*ap
);
634 static u8
mv_sff_check_status(struct ata_port
*ap
);
636 /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below
637 * because we have to allow room for worst case splitting of
638 * PRDs for 64K boundaries in mv_fill_sg().
640 static struct scsi_host_template mv5_sht
= {
641 ATA_BASE_SHT(DRV_NAME
),
642 .sg_tablesize
= MV_MAX_SG_CT
/ 2,
643 .dma_boundary
= MV_DMA_BOUNDARY
,
646 static struct scsi_host_template mv6_sht
= {
647 ATA_NCQ_SHT(DRV_NAME
),
648 .can_queue
= MV_MAX_Q_DEPTH
- 1,
649 .sg_tablesize
= MV_MAX_SG_CT
/ 2,
650 .dma_boundary
= MV_DMA_BOUNDARY
,
653 static struct ata_port_operations mv5_ops
= {
654 .inherits
= &ata_sff_port_ops
,
656 .lost_interrupt
= ATA_OP_NULL
,
658 .qc_defer
= mv_qc_defer
,
659 .qc_prep
= mv_qc_prep
,
660 .qc_issue
= mv_qc_issue
,
662 .freeze
= mv_eh_freeze
,
664 .hardreset
= mv_hardreset
,
665 .error_handler
= ata_std_error_handler
, /* avoid SFF EH */
666 .post_internal_cmd
= ATA_OP_NULL
,
668 .scr_read
= mv5_scr_read
,
669 .scr_write
= mv5_scr_write
,
671 .port_start
= mv_port_start
,
672 .port_stop
= mv_port_stop
,
675 static struct ata_port_operations mv6_ops
= {
676 .inherits
= &mv5_ops
,
677 .dev_config
= mv6_dev_config
,
678 .scr_read
= mv_scr_read
,
679 .scr_write
= mv_scr_write
,
681 .pmp_hardreset
= mv_pmp_hardreset
,
682 .pmp_softreset
= mv_softreset
,
683 .softreset
= mv_softreset
,
684 .error_handler
= mv_pmp_error_handler
,
686 .sff_check_status
= mv_sff_check_status
,
687 .sff_irq_clear
= mv_sff_irq_clear
,
688 .check_atapi_dma
= mv_check_atapi_dma
,
689 .bmdma_setup
= mv_bmdma_setup
,
690 .bmdma_start
= mv_bmdma_start
,
691 .bmdma_stop
= mv_bmdma_stop
,
692 .bmdma_status
= mv_bmdma_status
,
695 static struct ata_port_operations mv_iie_ops
= {
696 .inherits
= &mv6_ops
,
697 .dev_config
= ATA_OP_NULL
,
698 .qc_prep
= mv_qc_prep_iie
,
701 static const struct ata_port_info mv_port_info
[] = {
703 .flags
= MV_GEN_I_FLAGS
,
704 .pio_mask
= ATA_PIO4
,
705 .udma_mask
= ATA_UDMA6
,
706 .port_ops
= &mv5_ops
,
709 .flags
= MV_GEN_I_FLAGS
| MV_FLAG_DUAL_HC
,
710 .pio_mask
= ATA_PIO4
,
711 .udma_mask
= ATA_UDMA6
,
712 .port_ops
= &mv5_ops
,
715 .flags
= MV_GEN_I_FLAGS
| MV_FLAG_DUAL_HC
,
716 .pio_mask
= ATA_PIO4
,
717 .udma_mask
= ATA_UDMA6
,
718 .port_ops
= &mv5_ops
,
721 .flags
= MV_GEN_II_FLAGS
,
722 .pio_mask
= ATA_PIO4
,
723 .udma_mask
= ATA_UDMA6
,
724 .port_ops
= &mv6_ops
,
727 .flags
= MV_GEN_II_FLAGS
| MV_FLAG_DUAL_HC
,
728 .pio_mask
= ATA_PIO4
,
729 .udma_mask
= ATA_UDMA6
,
730 .port_ops
= &mv6_ops
,
733 .flags
= MV_GEN_IIE_FLAGS
,
734 .pio_mask
= ATA_PIO4
,
735 .udma_mask
= ATA_UDMA6
,
736 .port_ops
= &mv_iie_ops
,
739 .flags
= MV_GEN_IIE_FLAGS
,
740 .pio_mask
= ATA_PIO4
,
741 .udma_mask
= ATA_UDMA6
,
742 .port_ops
= &mv_iie_ops
,
745 .flags
= MV_GEN_IIE_FLAGS
,
746 .pio_mask
= ATA_PIO4
,
747 .udma_mask
= ATA_UDMA6
,
748 .port_ops
= &mv_iie_ops
,
752 static const struct pci_device_id mv_pci_tbl
[] = {
753 { PCI_VDEVICE(MARVELL
, 0x5040), chip_504x
},
754 { PCI_VDEVICE(MARVELL
, 0x5041), chip_504x
},
755 { PCI_VDEVICE(MARVELL
, 0x5080), chip_5080
},
756 { PCI_VDEVICE(MARVELL
, 0x5081), chip_508x
},
757 /* RocketRAID 1720/174x have different identifiers */
758 { PCI_VDEVICE(TTI
, 0x1720), chip_6042
},
759 { PCI_VDEVICE(TTI
, 0x1740), chip_6042
},
760 { PCI_VDEVICE(TTI
, 0x1742), chip_6042
},
762 { PCI_VDEVICE(MARVELL
, 0x6040), chip_604x
},
763 { PCI_VDEVICE(MARVELL
, 0x6041), chip_604x
},
764 { PCI_VDEVICE(MARVELL
, 0x6042), chip_6042
},
765 { PCI_VDEVICE(MARVELL
, 0x6080), chip_608x
},
766 { PCI_VDEVICE(MARVELL
, 0x6081), chip_608x
},
768 { PCI_VDEVICE(ADAPTEC2
, 0x0241), chip_604x
},
771 { PCI_VDEVICE(ADAPTEC2
, 0x0243), chip_7042
},
773 /* Marvell 7042 support */
774 { PCI_VDEVICE(MARVELL
, 0x7042), chip_7042
},
776 /* Highpoint RocketRAID PCIe series */
777 { PCI_VDEVICE(TTI
, 0x2300), chip_7042
},
778 { PCI_VDEVICE(TTI
, 0x2310), chip_7042
},
780 { } /* terminate list */
783 static const struct mv_hw_ops mv5xxx_ops
= {
784 .phy_errata
= mv5_phy_errata
,
785 .enable_leds
= mv5_enable_leds
,
786 .read_preamp
= mv5_read_preamp
,
787 .reset_hc
= mv5_reset_hc
,
788 .reset_flash
= mv5_reset_flash
,
789 .reset_bus
= mv5_reset_bus
,
792 static const struct mv_hw_ops mv6xxx_ops
= {
793 .phy_errata
= mv6_phy_errata
,
794 .enable_leds
= mv6_enable_leds
,
795 .read_preamp
= mv6_read_preamp
,
796 .reset_hc
= mv6_reset_hc
,
797 .reset_flash
= mv6_reset_flash
,
798 .reset_bus
= mv_reset_pci_bus
,
801 static const struct mv_hw_ops mv_soc_ops
= {
802 .phy_errata
= mv6_phy_errata
,
803 .enable_leds
= mv_soc_enable_leds
,
804 .read_preamp
= mv_soc_read_preamp
,
805 .reset_hc
= mv_soc_reset_hc
,
806 .reset_flash
= mv_soc_reset_flash
,
807 .reset_bus
= mv_soc_reset_bus
,
814 static inline void writelfl(unsigned long data
, void __iomem
*addr
)
817 (void) readl(addr
); /* flush to avoid PCI posted write */
820 static inline unsigned int mv_hc_from_port(unsigned int port
)
822 return port
>> MV_PORT_HC_SHIFT
;
825 static inline unsigned int mv_hardport_from_port(unsigned int port
)
827 return port
& MV_PORT_MASK
;
831 * Consolidate some rather tricky bit shift calculations.
832 * This is hot-path stuff, so not a function.
833 * Simple code, with two return values, so macro rather than inline.
835 * port is the sole input, in range 0..7.
836 * shift is one output, for use with main_irq_cause / main_irq_mask registers.
837 * hardport is the other output, in range 0..3.
839 * Note that port and hardport may be the same variable in some cases.
841 #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \
843 shift = mv_hc_from_port(port) * HC_SHIFT; \
844 hardport = mv_hardport_from_port(port); \
845 shift += hardport * 2; \
848 static inline void __iomem
*mv_hc_base(void __iomem
*base
, unsigned int hc
)
850 return (base
+ SATAHC0_REG_BASE
+ (hc
* MV_SATAHC_REG_SZ
));
853 static inline void __iomem
*mv_hc_base_from_port(void __iomem
*base
,
856 return mv_hc_base(base
, mv_hc_from_port(port
));
859 static inline void __iomem
*mv_port_base(void __iomem
*base
, unsigned int port
)
861 return mv_hc_base_from_port(base
, port
) +
862 MV_SATAHC_ARBTR_REG_SZ
+
863 (mv_hardport_from_port(port
) * MV_PORT_REG_SZ
);
866 static void __iomem
*mv5_phy_base(void __iomem
*mmio
, unsigned int port
)
868 void __iomem
*hc_mmio
= mv_hc_base_from_port(mmio
, port
);
869 unsigned long ofs
= (mv_hardport_from_port(port
) + 1) * 0x100UL
;
871 return hc_mmio
+ ofs
;
874 static inline void __iomem
*mv_host_base(struct ata_host
*host
)
876 struct mv_host_priv
*hpriv
= host
->private_data
;
880 static inline void __iomem
*mv_ap_base(struct ata_port
*ap
)
882 return mv_port_base(mv_host_base(ap
->host
), ap
->port_no
);
885 static inline int mv_get_hc_count(unsigned long port_flags
)
887 return ((port_flags
& MV_FLAG_DUAL_HC
) ? 2 : 1);
891 * mv_save_cached_regs - (re-)initialize cached port registers
892 * @ap: the port whose registers we are caching
894 * Initialize the local cache of port registers,
895 * so that reading them over and over again can
896 * be avoided on the hotter paths of this driver.
897 * This saves a few microseconds each time we switch
898 * to/from EDMA mode to perform (eg.) a drive cache flush.
900 static void mv_save_cached_regs(struct ata_port
*ap
)
902 void __iomem
*port_mmio
= mv_ap_base(ap
);
903 struct mv_port_priv
*pp
= ap
->private_data
;
905 pp
->cached
.fiscfg
= readl(port_mmio
+ FISCFG
);
906 pp
->cached
.ltmode
= readl(port_mmio
+ LTMODE
);
907 pp
->cached
.haltcond
= readl(port_mmio
+ EDMA_HALTCOND
);
908 pp
->cached
.unknown_rsvd
= readl(port_mmio
+ EDMA_UNKNOWN_RSVD
);
912 * mv_write_cached_reg - write to a cached port register
913 * @addr: hardware address of the register
914 * @old: pointer to cached value of the register
915 * @new: new value for the register
917 * Write a new value to a cached register,
918 * but only if the value is different from before.
920 static inline void mv_write_cached_reg(void __iomem
*addr
, u32
*old
, u32
new)
926 * Workaround for 88SX60x1-B2 FEr SATA#13:
927 * Read-after-write is needed to prevent generating 64-bit
928 * write cycles on the PCI bus for SATA interface registers
929 * at offsets ending in 0x4 or 0xc.
931 * Looks like a lot of fuss, but it avoids an unnecessary
932 * +1 usec read-after-write delay for unaffected registers.
934 laddr
= (long)addr
& 0xffff;
935 if (laddr
>= 0x300 && laddr
<= 0x33c) {
937 if (laddr
== 0x4 || laddr
== 0xc) {
938 writelfl(new, addr
); /* read after write */
942 writel(new, addr
); /* unaffected by the errata */
946 static void mv_set_edma_ptrs(void __iomem
*port_mmio
,
947 struct mv_host_priv
*hpriv
,
948 struct mv_port_priv
*pp
)
953 * initialize request queue
955 pp
->req_idx
&= MV_MAX_Q_DEPTH_MASK
; /* paranoia */
956 index
= pp
->req_idx
<< EDMA_REQ_Q_PTR_SHIFT
;
958 WARN_ON(pp
->crqb_dma
& 0x3ff);
959 writel((pp
->crqb_dma
>> 16) >> 16, port_mmio
+ EDMA_REQ_Q_BASE_HI
);
960 writelfl((pp
->crqb_dma
& EDMA_REQ_Q_BASE_LO_MASK
) | index
,
961 port_mmio
+ EDMA_REQ_Q_IN_PTR
);
962 writelfl(index
, port_mmio
+ EDMA_REQ_Q_OUT_PTR
);
965 * initialize response queue
967 pp
->resp_idx
&= MV_MAX_Q_DEPTH_MASK
; /* paranoia */
968 index
= pp
->resp_idx
<< EDMA_RSP_Q_PTR_SHIFT
;
970 WARN_ON(pp
->crpb_dma
& 0xff);
971 writel((pp
->crpb_dma
>> 16) >> 16, port_mmio
+ EDMA_RSP_Q_BASE_HI
);
972 writelfl(index
, port_mmio
+ EDMA_RSP_Q_IN_PTR
);
973 writelfl((pp
->crpb_dma
& EDMA_RSP_Q_BASE_LO_MASK
) | index
,
974 port_mmio
+ EDMA_RSP_Q_OUT_PTR
);
977 static void mv_write_main_irq_mask(u32 mask
, struct mv_host_priv
*hpriv
)
980 * When writing to the main_irq_mask in hardware,
981 * we must ensure exclusivity between the interrupt coalescing bits
982 * and the corresponding individual port DONE_IRQ bits.
984 * Note that this register is really an "IRQ enable" register,
985 * not an "IRQ mask" register as Marvell's naming might suggest.
987 if (mask
& (ALL_PORTS_COAL_DONE
| PORTS_0_3_COAL_DONE
))
988 mask
&= ~DONE_IRQ_0_3
;
989 if (mask
& (ALL_PORTS_COAL_DONE
| PORTS_4_7_COAL_DONE
))
990 mask
&= ~DONE_IRQ_4_7
;
991 writelfl(mask
, hpriv
->main_irq_mask_addr
);
994 static void mv_set_main_irq_mask(struct ata_host
*host
,
995 u32 disable_bits
, u32 enable_bits
)
997 struct mv_host_priv
*hpriv
= host
->private_data
;
998 u32 old_mask
, new_mask
;
1000 old_mask
= hpriv
->main_irq_mask
;
1001 new_mask
= (old_mask
& ~disable_bits
) | enable_bits
;
1002 if (new_mask
!= old_mask
) {
1003 hpriv
->main_irq_mask
= new_mask
;
1004 mv_write_main_irq_mask(new_mask
, hpriv
);
1008 static void mv_enable_port_irqs(struct ata_port
*ap
,
1009 unsigned int port_bits
)
1011 unsigned int shift
, hardport
, port
= ap
->port_no
;
1012 u32 disable_bits
, enable_bits
;
1014 MV_PORT_TO_SHIFT_AND_HARDPORT(port
, shift
, hardport
);
1016 disable_bits
= (DONE_IRQ
| ERR_IRQ
) << shift
;
1017 enable_bits
= port_bits
<< shift
;
1018 mv_set_main_irq_mask(ap
->host
, disable_bits
, enable_bits
);
1021 static void mv_clear_and_enable_port_irqs(struct ata_port
*ap
,
1022 void __iomem
*port_mmio
,
1023 unsigned int port_irqs
)
1025 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
1026 int hardport
= mv_hardport_from_port(ap
->port_no
);
1027 void __iomem
*hc_mmio
= mv_hc_base_from_port(
1028 mv_host_base(ap
->host
), ap
->port_no
);
1031 /* clear EDMA event indicators, if any */
1032 writelfl(0, port_mmio
+ EDMA_ERR_IRQ_CAUSE
);
1034 /* clear pending irq events */
1035 hc_irq_cause
= ~((DEV_IRQ
| DMA_IRQ
) << hardport
);
1036 writelfl(hc_irq_cause
, hc_mmio
+ HC_IRQ_CAUSE
);
1038 /* clear FIS IRQ Cause */
1039 if (IS_GEN_IIE(hpriv
))
1040 writelfl(0, port_mmio
+ FIS_IRQ_CAUSE
);
1042 mv_enable_port_irqs(ap
, port_irqs
);
1045 static void mv_set_irq_coalescing(struct ata_host
*host
,
1046 unsigned int count
, unsigned int usecs
)
1048 struct mv_host_priv
*hpriv
= host
->private_data
;
1049 void __iomem
*mmio
= hpriv
->base
, *hc_mmio
;
1050 u32 coal_enable
= 0;
1051 unsigned long flags
;
1052 unsigned int clks
, is_dual_hc
= hpriv
->n_ports
> MV_PORTS_PER_HC
;
1053 const u32 coal_disable
= PORTS_0_3_COAL_DONE
| PORTS_4_7_COAL_DONE
|
1054 ALL_PORTS_COAL_DONE
;
1056 /* Disable IRQ coalescing if either threshold is zero */
1057 if (!usecs
|| !count
) {
1060 /* Respect maximum limits of the hardware */
1061 clks
= usecs
* COAL_CLOCKS_PER_USEC
;
1062 if (clks
> MAX_COAL_TIME_THRESHOLD
)
1063 clks
= MAX_COAL_TIME_THRESHOLD
;
1064 if (count
> MAX_COAL_IO_COUNT
)
1065 count
= MAX_COAL_IO_COUNT
;
1068 spin_lock_irqsave(&host
->lock
, flags
);
1069 mv_set_main_irq_mask(host
, coal_disable
, 0);
1071 if (is_dual_hc
&& !IS_GEN_I(hpriv
)) {
1073 * GEN_II/GEN_IIE with dual host controllers:
1074 * one set of global thresholds for the entire chip.
1076 writel(clks
, mmio
+ IRQ_COAL_TIME_THRESHOLD
);
1077 writel(count
, mmio
+ IRQ_COAL_IO_THRESHOLD
);
1078 /* clear leftover coal IRQ bit */
1079 writel(~ALL_PORTS_COAL_IRQ
, mmio
+ IRQ_COAL_CAUSE
);
1081 coal_enable
= ALL_PORTS_COAL_DONE
;
1082 clks
= count
= 0; /* force clearing of regular regs below */
1086 * All chips: independent thresholds for each HC on the chip.
1088 hc_mmio
= mv_hc_base_from_port(mmio
, 0);
1089 writel(clks
, hc_mmio
+ HC_IRQ_COAL_TIME_THRESHOLD
);
1090 writel(count
, hc_mmio
+ HC_IRQ_COAL_IO_THRESHOLD
);
1091 writel(~HC_COAL_IRQ
, hc_mmio
+ HC_IRQ_CAUSE
);
1093 coal_enable
|= PORTS_0_3_COAL_DONE
;
1095 hc_mmio
= mv_hc_base_from_port(mmio
, MV_PORTS_PER_HC
);
1096 writel(clks
, hc_mmio
+ HC_IRQ_COAL_TIME_THRESHOLD
);
1097 writel(count
, hc_mmio
+ HC_IRQ_COAL_IO_THRESHOLD
);
1098 writel(~HC_COAL_IRQ
, hc_mmio
+ HC_IRQ_CAUSE
);
1100 coal_enable
|= PORTS_4_7_COAL_DONE
;
1103 mv_set_main_irq_mask(host
, 0, coal_enable
);
1104 spin_unlock_irqrestore(&host
->lock
, flags
);
1108 * mv_start_edma - Enable eDMA engine
1109 * @base: port base address
1110 * @pp: port private data
1112 * Verify the local cache of the eDMA state is accurate with a
1116 * Inherited from caller.
1118 static void mv_start_edma(struct ata_port
*ap
, void __iomem
*port_mmio
,
1119 struct mv_port_priv
*pp
, u8 protocol
)
1121 int want_ncq
= (protocol
== ATA_PROT_NCQ
);
1123 if (pp
->pp_flags
& MV_PP_FLAG_EDMA_EN
) {
1124 int using_ncq
= ((pp
->pp_flags
& MV_PP_FLAG_NCQ_EN
) != 0);
1125 if (want_ncq
!= using_ncq
)
1128 if (!(pp
->pp_flags
& MV_PP_FLAG_EDMA_EN
)) {
1129 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
1131 mv_edma_cfg(ap
, want_ncq
, 1);
1133 mv_set_edma_ptrs(port_mmio
, hpriv
, pp
);
1134 mv_clear_and_enable_port_irqs(ap
, port_mmio
, DONE_IRQ
|ERR_IRQ
);
1136 writelfl(EDMA_EN
, port_mmio
+ EDMA_CMD
);
1137 pp
->pp_flags
|= MV_PP_FLAG_EDMA_EN
;
1141 static void mv_wait_for_edma_empty_idle(struct ata_port
*ap
)
1143 void __iomem
*port_mmio
= mv_ap_base(ap
);
1144 const u32 empty_idle
= (EDMA_STATUS_CACHE_EMPTY
| EDMA_STATUS_IDLE
);
1145 const int per_loop
= 5, timeout
= (15 * 1000 / per_loop
);
1149 * Wait for the EDMA engine to finish transactions in progress.
1150 * No idea what a good "timeout" value might be, but measurements
1151 * indicate that it often requires hundreds of microseconds
1152 * with two drives in-use. So we use the 15msec value above
1153 * as a rough guess at what even more drives might require.
1155 for (i
= 0; i
< timeout
; ++i
) {
1156 u32 edma_stat
= readl(port_mmio
+ EDMA_STATUS
);
1157 if ((edma_stat
& empty_idle
) == empty_idle
)
1161 /* ata_port_printk(ap, KERN_INFO, "%s: %u+ usecs\n", __func__, i); */
1165 * mv_stop_edma_engine - Disable eDMA engine
1166 * @port_mmio: io base address
1169 * Inherited from caller.
1171 static int mv_stop_edma_engine(void __iomem
*port_mmio
)
1175 /* Disable eDMA. The disable bit auto clears. */
1176 writelfl(EDMA_DS
, port_mmio
+ EDMA_CMD
);
1178 /* Wait for the chip to confirm eDMA is off. */
1179 for (i
= 10000; i
> 0; i
--) {
1180 u32 reg
= readl(port_mmio
+ EDMA_CMD
);
1181 if (!(reg
& EDMA_EN
))
1188 static int mv_stop_edma(struct ata_port
*ap
)
1190 void __iomem
*port_mmio
= mv_ap_base(ap
);
1191 struct mv_port_priv
*pp
= ap
->private_data
;
1194 if (!(pp
->pp_flags
& MV_PP_FLAG_EDMA_EN
))
1196 pp
->pp_flags
&= ~MV_PP_FLAG_EDMA_EN
;
1197 mv_wait_for_edma_empty_idle(ap
);
1198 if (mv_stop_edma_engine(port_mmio
)) {
1199 ata_port_printk(ap
, KERN_ERR
, "Unable to stop eDMA\n");
1202 mv_edma_cfg(ap
, 0, 0);
1207 static void mv_dump_mem(void __iomem
*start
, unsigned bytes
)
1210 for (b
= 0; b
< bytes
; ) {
1211 DPRINTK("%p: ", start
+ b
);
1212 for (w
= 0; b
< bytes
&& w
< 4; w
++) {
1213 printk("%08x ", readl(start
+ b
));
1221 static void mv_dump_pci_cfg(struct pci_dev
*pdev
, unsigned bytes
)
1226 for (b
= 0; b
< bytes
; ) {
1227 DPRINTK("%02x: ", b
);
1228 for (w
= 0; b
< bytes
&& w
< 4; w
++) {
1229 (void) pci_read_config_dword(pdev
, b
, &dw
);
1230 printk("%08x ", dw
);
1237 static void mv_dump_all_regs(void __iomem
*mmio_base
, int port
,
1238 struct pci_dev
*pdev
)
1241 void __iomem
*hc_base
= mv_hc_base(mmio_base
,
1242 port
>> MV_PORT_HC_SHIFT
);
1243 void __iomem
*port_base
;
1244 int start_port
, num_ports
, p
, start_hc
, num_hcs
, hc
;
1247 start_hc
= start_port
= 0;
1248 num_ports
= 8; /* shld be benign for 4 port devs */
1251 start_hc
= port
>> MV_PORT_HC_SHIFT
;
1253 num_ports
= num_hcs
= 1;
1255 DPRINTK("All registers for port(s) %u-%u:\n", start_port
,
1256 num_ports
> 1 ? num_ports
- 1 : start_port
);
1259 DPRINTK("PCI config space regs:\n");
1260 mv_dump_pci_cfg(pdev
, 0x68);
1262 DPRINTK("PCI regs:\n");
1263 mv_dump_mem(mmio_base
+0xc00, 0x3c);
1264 mv_dump_mem(mmio_base
+0xd00, 0x34);
1265 mv_dump_mem(mmio_base
+0xf00, 0x4);
1266 mv_dump_mem(mmio_base
+0x1d00, 0x6c);
1267 for (hc
= start_hc
; hc
< start_hc
+ num_hcs
; hc
++) {
1268 hc_base
= mv_hc_base(mmio_base
, hc
);
1269 DPRINTK("HC regs (HC %i):\n", hc
);
1270 mv_dump_mem(hc_base
, 0x1c);
1272 for (p
= start_port
; p
< start_port
+ num_ports
; p
++) {
1273 port_base
= mv_port_base(mmio_base
, p
);
1274 DPRINTK("EDMA regs (port %i):\n", p
);
1275 mv_dump_mem(port_base
, 0x54);
1276 DPRINTK("SATA regs (port %i):\n", p
);
1277 mv_dump_mem(port_base
+0x300, 0x60);
1282 static unsigned int mv_scr_offset(unsigned int sc_reg_in
)
1286 switch (sc_reg_in
) {
1290 ofs
= SATA_STATUS
+ (sc_reg_in
* sizeof(u32
));
1293 ofs
= SATA_ACTIVE
; /* active is not with the others */
1302 static int mv_scr_read(struct ata_link
*link
, unsigned int sc_reg_in
, u32
*val
)
1304 unsigned int ofs
= mv_scr_offset(sc_reg_in
);
1306 if (ofs
!= 0xffffffffU
) {
1307 *val
= readl(mv_ap_base(link
->ap
) + ofs
);
1313 static int mv_scr_write(struct ata_link
*link
, unsigned int sc_reg_in
, u32 val
)
1315 unsigned int ofs
= mv_scr_offset(sc_reg_in
);
1317 if (ofs
!= 0xffffffffU
) {
1318 void __iomem
*addr
= mv_ap_base(link
->ap
) + ofs
;
1319 if (sc_reg_in
== SCR_CONTROL
) {
1321 * Workaround for 88SX60x1 FEr SATA#26:
1323 * COMRESETs have to take care not to accidently
1324 * put the drive to sleep when writing SCR_CONTROL.
1325 * Setting bits 12..15 prevents this problem.
1327 * So if we see an outbound COMMRESET, set those bits.
1328 * Ditto for the followup write that clears the reset.
1330 * The proprietary driver does this for
1331 * all chip versions, and so do we.
1333 if ((val
& 0xf) == 1 || (readl(addr
) & 0xf) == 1)
1336 writelfl(val
, addr
);
1342 static void mv6_dev_config(struct ata_device
*adev
)
1345 * Deal with Gen-II ("mv6") hardware quirks/restrictions:
1347 * Gen-II does not support NCQ over a port multiplier
1348 * (no FIS-based switching).
1350 if (adev
->flags
& ATA_DFLAG_NCQ
) {
1351 if (sata_pmp_attached(adev
->link
->ap
)) {
1352 adev
->flags
&= ~ATA_DFLAG_NCQ
;
1353 ata_dev_printk(adev
, KERN_INFO
,
1354 "NCQ disabled for command-based switching\n");
1359 static int mv_qc_defer(struct ata_queued_cmd
*qc
)
1361 struct ata_link
*link
= qc
->dev
->link
;
1362 struct ata_port
*ap
= link
->ap
;
1363 struct mv_port_priv
*pp
= ap
->private_data
;
1366 * Don't allow new commands if we're in a delayed EH state
1367 * for NCQ and/or FIS-based switching.
1369 if (pp
->pp_flags
& MV_PP_FLAG_DELAYED_EH
)
1370 return ATA_DEFER_PORT
;
1372 * If the port is completely idle, then allow the new qc.
1374 if (ap
->nr_active_links
== 0)
1378 * The port is operating in host queuing mode (EDMA) with NCQ
1379 * enabled, allow multiple NCQ commands. EDMA also allows
1380 * queueing multiple DMA commands but libata core currently
1383 if ((pp
->pp_flags
& MV_PP_FLAG_EDMA_EN
) &&
1384 (pp
->pp_flags
& MV_PP_FLAG_NCQ_EN
) && ata_is_ncq(qc
->tf
.protocol
))
1387 return ATA_DEFER_PORT
;
1390 static void mv_config_fbs(struct ata_port
*ap
, int want_ncq
, int want_fbs
)
1392 struct mv_port_priv
*pp
= ap
->private_data
;
1393 void __iomem
*port_mmio
;
1395 u32 fiscfg
, *old_fiscfg
= &pp
->cached
.fiscfg
;
1396 u32 ltmode
, *old_ltmode
= &pp
->cached
.ltmode
;
1397 u32 haltcond
, *old_haltcond
= &pp
->cached
.haltcond
;
1399 ltmode
= *old_ltmode
& ~LTMODE_BIT8
;
1400 haltcond
= *old_haltcond
| EDMA_ERR_DEV
;
1403 fiscfg
= *old_fiscfg
| FISCFG_SINGLE_SYNC
;
1404 ltmode
= *old_ltmode
| LTMODE_BIT8
;
1406 haltcond
&= ~EDMA_ERR_DEV
;
1408 fiscfg
|= FISCFG_WAIT_DEV_ERR
;
1410 fiscfg
= *old_fiscfg
& ~(FISCFG_SINGLE_SYNC
| FISCFG_WAIT_DEV_ERR
);
1413 port_mmio
= mv_ap_base(ap
);
1414 mv_write_cached_reg(port_mmio
+ FISCFG
, old_fiscfg
, fiscfg
);
1415 mv_write_cached_reg(port_mmio
+ LTMODE
, old_ltmode
, ltmode
);
1416 mv_write_cached_reg(port_mmio
+ EDMA_HALTCOND
, old_haltcond
, haltcond
);
1419 static void mv_60x1_errata_sata25(struct ata_port
*ap
, int want_ncq
)
1421 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
1424 /* workaround for 88SX60x1 FEr SATA#25 (part 1) */
1425 old
= readl(hpriv
->base
+ GPIO_PORT_CTL
);
1427 new = old
| (1 << 22);
1429 new = old
& ~(1 << 22);
1431 writel(new, hpriv
->base
+ GPIO_PORT_CTL
);
1435 * mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma
1436 * @ap: Port being initialized
1438 * There are two DMA modes on these chips: basic DMA, and EDMA.
1440 * Bit-0 of the "EDMA RESERVED" register enables/disables use
1441 * of basic DMA on the GEN_IIE versions of the chips.
1443 * This bit survives EDMA resets, and must be set for basic DMA
1444 * to function, and should be cleared when EDMA is active.
1446 static void mv_bmdma_enable_iie(struct ata_port
*ap
, int enable_bmdma
)
1448 struct mv_port_priv
*pp
= ap
->private_data
;
1449 u32
new, *old
= &pp
->cached
.unknown_rsvd
;
1455 mv_write_cached_reg(mv_ap_base(ap
) + EDMA_UNKNOWN_RSVD
, old
, new);
1459 * SOC chips have an issue whereby the HDD LEDs don't always blink
1460 * during I/O when NCQ is enabled. Enabling a special "LED blink" mode
1461 * of the SOC takes care of it, generating a steady blink rate when
1462 * any drive on the chip is active.
1464 * Unfortunately, the blink mode is a global hardware setting for the SOC,
1465 * so we must use it whenever at least one port on the SOC has NCQ enabled.
1467 * We turn "LED blink" off when NCQ is not in use anywhere, because the normal
1468 * LED operation works then, and provides better (more accurate) feedback.
1470 * Note that this code assumes that an SOC never has more than one HC onboard.
1472 static void mv_soc_led_blink_enable(struct ata_port
*ap
)
1474 struct ata_host
*host
= ap
->host
;
1475 struct mv_host_priv
*hpriv
= host
->private_data
;
1476 void __iomem
*hc_mmio
;
1479 if (hpriv
->hp_flags
& MV_HP_QUIRK_LED_BLINK_EN
)
1481 hpriv
->hp_flags
|= MV_HP_QUIRK_LED_BLINK_EN
;
1482 hc_mmio
= mv_hc_base_from_port(mv_host_base(host
), ap
->port_no
);
1483 led_ctrl
= readl(hc_mmio
+ SOC_LED_CTRL
);
1484 writel(led_ctrl
| SOC_LED_CTRL_BLINK
, hc_mmio
+ SOC_LED_CTRL
);
1487 static void mv_soc_led_blink_disable(struct ata_port
*ap
)
1489 struct ata_host
*host
= ap
->host
;
1490 struct mv_host_priv
*hpriv
= host
->private_data
;
1491 void __iomem
*hc_mmio
;
1495 if (!(hpriv
->hp_flags
& MV_HP_QUIRK_LED_BLINK_EN
))
1498 /* disable led-blink only if no ports are using NCQ */
1499 for (port
= 0; port
< hpriv
->n_ports
; port
++) {
1500 struct ata_port
*this_ap
= host
->ports
[port
];
1501 struct mv_port_priv
*pp
= this_ap
->private_data
;
1503 if (pp
->pp_flags
& MV_PP_FLAG_NCQ_EN
)
1507 hpriv
->hp_flags
&= ~MV_HP_QUIRK_LED_BLINK_EN
;
1508 hc_mmio
= mv_hc_base_from_port(mv_host_base(host
), ap
->port_no
);
1509 led_ctrl
= readl(hc_mmio
+ SOC_LED_CTRL
);
1510 writel(led_ctrl
& ~SOC_LED_CTRL_BLINK
, hc_mmio
+ SOC_LED_CTRL
);
1513 static void mv_edma_cfg(struct ata_port
*ap
, int want_ncq
, int want_edma
)
1516 struct mv_port_priv
*pp
= ap
->private_data
;
1517 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
1518 void __iomem
*port_mmio
= mv_ap_base(ap
);
1520 /* set up non-NCQ EDMA configuration */
1521 cfg
= EDMA_CFG_Q_DEPTH
; /* always 0x1f for *all* chips */
1523 ~(MV_PP_FLAG_FBS_EN
| MV_PP_FLAG_NCQ_EN
| MV_PP_FLAG_FAKE_ATA_BUSY
);
1525 if (IS_GEN_I(hpriv
))
1526 cfg
|= (1 << 8); /* enab config burst size mask */
1528 else if (IS_GEN_II(hpriv
)) {
1529 cfg
|= EDMA_CFG_RD_BRST_EXT
| EDMA_CFG_WR_BUFF_LEN
;
1530 mv_60x1_errata_sata25(ap
, want_ncq
);
1532 } else if (IS_GEN_IIE(hpriv
)) {
1533 int want_fbs
= sata_pmp_attached(ap
);
1535 * Possible future enhancement:
1537 * The chip can use FBS with non-NCQ, if we allow it,
1538 * But first we need to have the error handling in place
1539 * for this mode (datasheet section 7.3.15.4.2.3).
1540 * So disallow non-NCQ FBS for now.
1542 want_fbs
&= want_ncq
;
1544 mv_config_fbs(ap
, want_ncq
, want_fbs
);
1547 pp
->pp_flags
|= MV_PP_FLAG_FBS_EN
;
1548 cfg
|= EDMA_CFG_EDMA_FBS
; /* FIS-based switching */
1551 cfg
|= (1 << 23); /* do not mask PM field in rx'd FIS */
1553 cfg
|= (1 << 22); /* enab 4-entry host queue cache */
1555 cfg
|= (1 << 18); /* enab early completion */
1557 if (hpriv
->hp_flags
& MV_HP_CUT_THROUGH
)
1558 cfg
|= (1 << 17); /* enab cut-thru (dis stor&forwrd) */
1559 mv_bmdma_enable_iie(ap
, !want_edma
);
1561 if (IS_SOC(hpriv
)) {
1563 mv_soc_led_blink_enable(ap
);
1565 mv_soc_led_blink_disable(ap
);
1570 cfg
|= EDMA_CFG_NCQ
;
1571 pp
->pp_flags
|= MV_PP_FLAG_NCQ_EN
;
1574 writelfl(cfg
, port_mmio
+ EDMA_CFG
);
1577 static void mv_port_free_dma_mem(struct ata_port
*ap
)
1579 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
1580 struct mv_port_priv
*pp
= ap
->private_data
;
1584 dma_pool_free(hpriv
->crqb_pool
, pp
->crqb
, pp
->crqb_dma
);
1588 dma_pool_free(hpriv
->crpb_pool
, pp
->crpb
, pp
->crpb_dma
);
1592 * For GEN_I, there's no NCQ, so we have only a single sg_tbl.
1593 * For later hardware, we have one unique sg_tbl per NCQ tag.
1595 for (tag
= 0; tag
< MV_MAX_Q_DEPTH
; ++tag
) {
1596 if (pp
->sg_tbl
[tag
]) {
1597 if (tag
== 0 || !IS_GEN_I(hpriv
))
1598 dma_pool_free(hpriv
->sg_tbl_pool
,
1600 pp
->sg_tbl_dma
[tag
]);
1601 pp
->sg_tbl
[tag
] = NULL
;
1607 * mv_port_start - Port specific init/start routine.
1608 * @ap: ATA channel to manipulate
1610 * Allocate and point to DMA memory, init port private memory,
1614 * Inherited from caller.
1616 static int mv_port_start(struct ata_port
*ap
)
1618 struct device
*dev
= ap
->host
->dev
;
1619 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
1620 struct mv_port_priv
*pp
;
1621 unsigned long flags
;
1624 pp
= devm_kzalloc(dev
, sizeof(*pp
), GFP_KERNEL
);
1627 ap
->private_data
= pp
;
1629 pp
->crqb
= dma_pool_alloc(hpriv
->crqb_pool
, GFP_KERNEL
, &pp
->crqb_dma
);
1632 memset(pp
->crqb
, 0, MV_CRQB_Q_SZ
);
1634 pp
->crpb
= dma_pool_alloc(hpriv
->crpb_pool
, GFP_KERNEL
, &pp
->crpb_dma
);
1636 goto out_port_free_dma_mem
;
1637 memset(pp
->crpb
, 0, MV_CRPB_Q_SZ
);
1639 /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */
1640 if (hpriv
->hp_flags
& MV_HP_ERRATA_60X1C0
)
1641 ap
->flags
|= ATA_FLAG_AN
;
1643 * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl.
1644 * For later hardware, we need one unique sg_tbl per NCQ tag.
1646 for (tag
= 0; tag
< MV_MAX_Q_DEPTH
; ++tag
) {
1647 if (tag
== 0 || !IS_GEN_I(hpriv
)) {
1648 pp
->sg_tbl
[tag
] = dma_pool_alloc(hpriv
->sg_tbl_pool
,
1649 GFP_KERNEL
, &pp
->sg_tbl_dma
[tag
]);
1650 if (!pp
->sg_tbl
[tag
])
1651 goto out_port_free_dma_mem
;
1653 pp
->sg_tbl
[tag
] = pp
->sg_tbl
[0];
1654 pp
->sg_tbl_dma
[tag
] = pp
->sg_tbl_dma
[0];
1658 spin_lock_irqsave(ap
->lock
, flags
);
1659 mv_save_cached_regs(ap
);
1660 mv_edma_cfg(ap
, 0, 0);
1661 spin_unlock_irqrestore(ap
->lock
, flags
);
1665 out_port_free_dma_mem
:
1666 mv_port_free_dma_mem(ap
);
1671 * mv_port_stop - Port specific cleanup/stop routine.
1672 * @ap: ATA channel to manipulate
1674 * Stop DMA, cleanup port memory.
1677 * This routine uses the host lock to protect the DMA stop.
1679 static void mv_port_stop(struct ata_port
*ap
)
1681 unsigned long flags
;
1683 spin_lock_irqsave(ap
->lock
, flags
);
1685 mv_enable_port_irqs(ap
, 0);
1686 spin_unlock_irqrestore(ap
->lock
, flags
);
1687 mv_port_free_dma_mem(ap
);
1691 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
1692 * @qc: queued command whose SG list to source from
1694 * Populate the SG list and mark the last entry.
1697 * Inherited from caller.
1699 static void mv_fill_sg(struct ata_queued_cmd
*qc
)
1701 struct mv_port_priv
*pp
= qc
->ap
->private_data
;
1702 struct scatterlist
*sg
;
1703 struct mv_sg
*mv_sg
, *last_sg
= NULL
;
1706 mv_sg
= pp
->sg_tbl
[qc
->tag
];
1707 for_each_sg(qc
->sg
, sg
, qc
->n_elem
, si
) {
1708 dma_addr_t addr
= sg_dma_address(sg
);
1709 u32 sg_len
= sg_dma_len(sg
);
1712 u32 offset
= addr
& 0xffff;
1715 if (offset
+ len
> 0x10000)
1716 len
= 0x10000 - offset
;
1718 mv_sg
->addr
= cpu_to_le32(addr
& 0xffffffff);
1719 mv_sg
->addr_hi
= cpu_to_le32((addr
>> 16) >> 16);
1720 mv_sg
->flags_size
= cpu_to_le32(len
& 0xffff);
1721 mv_sg
->reserved
= 0;
1731 if (likely(last_sg
))
1732 last_sg
->flags_size
|= cpu_to_le32(EPRD_FLAG_END_OF_TBL
);
1733 mb(); /* ensure data structure is visible to the chipset */
1736 static void mv_crqb_pack_cmd(__le16
*cmdw
, u8 data
, u8 addr
, unsigned last
)
1738 u16 tmp
= data
| (addr
<< CRQB_CMD_ADDR_SHIFT
) | CRQB_CMD_CS
|
1739 (last
? CRQB_CMD_LAST
: 0);
1740 *cmdw
= cpu_to_le16(tmp
);
1744 * mv_sff_irq_clear - Clear hardware interrupt after DMA.
1745 * @ap: Port associated with this ATA transaction.
1747 * We need this only for ATAPI bmdma transactions,
1748 * as otherwise we experience spurious interrupts
1749 * after libata-sff handles the bmdma interrupts.
1751 static void mv_sff_irq_clear(struct ata_port
*ap
)
1753 mv_clear_and_enable_port_irqs(ap
, mv_ap_base(ap
), ERR_IRQ
);
1757 * mv_check_atapi_dma - Filter ATAPI cmds which are unsuitable for DMA.
1758 * @qc: queued command to check for chipset/DMA compatibility.
1760 * The bmdma engines cannot handle speculative data sizes
1761 * (bytecount under/over flow). So only allow DMA for
1762 * data transfer commands with known data sizes.
1765 * Inherited from caller.
1767 static int mv_check_atapi_dma(struct ata_queued_cmd
*qc
)
1769 struct scsi_cmnd
*scmd
= qc
->scsicmd
;
1772 switch (scmd
->cmnd
[0]) {
1780 case GPCMD_SEND_DVD_STRUCTURE
:
1781 case GPCMD_SEND_CUE_SHEET
:
1782 return 0; /* DMA is safe */
1785 return -EOPNOTSUPP
; /* use PIO instead */
1789 * mv_bmdma_setup - Set up BMDMA transaction
1790 * @qc: queued command to prepare DMA for.
1793 * Inherited from caller.
1795 static void mv_bmdma_setup(struct ata_queued_cmd
*qc
)
1797 struct ata_port
*ap
= qc
->ap
;
1798 void __iomem
*port_mmio
= mv_ap_base(ap
);
1799 struct mv_port_priv
*pp
= ap
->private_data
;
1803 /* clear all DMA cmd bits */
1804 writel(0, port_mmio
+ BMDMA_CMD
);
1806 /* load PRD table addr. */
1807 writel((pp
->sg_tbl_dma
[qc
->tag
] >> 16) >> 16,
1808 port_mmio
+ BMDMA_PRD_HIGH
);
1809 writelfl(pp
->sg_tbl_dma
[qc
->tag
],
1810 port_mmio
+ BMDMA_PRD_LOW
);
1812 /* issue r/w command */
1813 ap
->ops
->sff_exec_command(ap
, &qc
->tf
);
1817 * mv_bmdma_start - Start a BMDMA transaction
1818 * @qc: queued command to start DMA on.
1821 * Inherited from caller.
1823 static void mv_bmdma_start(struct ata_queued_cmd
*qc
)
1825 struct ata_port
*ap
= qc
->ap
;
1826 void __iomem
*port_mmio
= mv_ap_base(ap
);
1827 unsigned int rw
= (qc
->tf
.flags
& ATA_TFLAG_WRITE
);
1828 u32 cmd
= (rw
? 0 : ATA_DMA_WR
) | ATA_DMA_START
;
1830 /* start host DMA transaction */
1831 writelfl(cmd
, port_mmio
+ BMDMA_CMD
);
1835 * mv_bmdma_stop - Stop BMDMA transfer
1836 * @qc: queued command to stop DMA on.
1838 * Clears the ATA_DMA_START flag in the bmdma control register
1841 * Inherited from caller.
1843 static void mv_bmdma_stop(struct ata_queued_cmd
*qc
)
1845 struct ata_port
*ap
= qc
->ap
;
1846 void __iomem
*port_mmio
= mv_ap_base(ap
);
1849 /* clear start/stop bit */
1850 cmd
= readl(port_mmio
+ BMDMA_CMD
);
1851 cmd
&= ~ATA_DMA_START
;
1852 writelfl(cmd
, port_mmio
+ BMDMA_CMD
);
1854 /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
1855 ata_sff_dma_pause(ap
);
1859 * mv_bmdma_status - Read BMDMA status
1860 * @ap: port for which to retrieve DMA status.
1862 * Read and return equivalent of the sff BMDMA status register.
1865 * Inherited from caller.
1867 static u8
mv_bmdma_status(struct ata_port
*ap
)
1869 void __iomem
*port_mmio
= mv_ap_base(ap
);
1873 * Other bits are valid only if ATA_DMA_ACTIVE==0,
1874 * and the ATA_DMA_INTR bit doesn't exist.
1876 reg
= readl(port_mmio
+ BMDMA_STATUS
);
1877 if (reg
& ATA_DMA_ACTIVE
)
1878 status
= ATA_DMA_ACTIVE
;
1880 status
= (reg
& ATA_DMA_ERR
) | ATA_DMA_INTR
;
1885 * mv_qc_prep - Host specific command preparation.
1886 * @qc: queued command to prepare
1888 * This routine simply redirects to the general purpose routine
1889 * if command is not DMA. Else, it handles prep of the CRQB
1890 * (command request block), does some sanity checking, and calls
1891 * the SG load routine.
1894 * Inherited from caller.
1896 static void mv_qc_prep(struct ata_queued_cmd
*qc
)
1898 struct ata_port
*ap
= qc
->ap
;
1899 struct mv_port_priv
*pp
= ap
->private_data
;
1901 struct ata_taskfile
*tf
= &qc
->tf
;
1905 if ((tf
->protocol
!= ATA_PROT_DMA
) &&
1906 (tf
->protocol
!= ATA_PROT_NCQ
))
1909 /* Fill in command request block
1911 if (!(tf
->flags
& ATA_TFLAG_WRITE
))
1912 flags
|= CRQB_FLAG_READ
;
1913 WARN_ON(MV_MAX_Q_DEPTH
<= qc
->tag
);
1914 flags
|= qc
->tag
<< CRQB_TAG_SHIFT
;
1915 flags
|= (qc
->dev
->link
->pmp
& 0xf) << CRQB_PMP_SHIFT
;
1917 /* get current queue index from software */
1918 in_index
= pp
->req_idx
;
1920 pp
->crqb
[in_index
].sg_addr
=
1921 cpu_to_le32(pp
->sg_tbl_dma
[qc
->tag
] & 0xffffffff);
1922 pp
->crqb
[in_index
].sg_addr_hi
=
1923 cpu_to_le32((pp
->sg_tbl_dma
[qc
->tag
] >> 16) >> 16);
1924 pp
->crqb
[in_index
].ctrl_flags
= cpu_to_le16(flags
);
1926 cw
= &pp
->crqb
[in_index
].ata_cmd
[0];
1928 /* Sadly, the CRQB cannot accomodate all registers--there are
1929 * only 11 bytes...so we must pick and choose required
1930 * registers based on the command. So, we drop feature and
1931 * hob_feature for [RW] DMA commands, but they are needed for
1932 * NCQ. NCQ will drop hob_nsect, which is not needed there
1933 * (nsect is used only for the tag; feat/hob_feat hold true nsect).
1935 switch (tf
->command
) {
1937 case ATA_CMD_READ_EXT
:
1939 case ATA_CMD_WRITE_EXT
:
1940 case ATA_CMD_WRITE_FUA_EXT
:
1941 mv_crqb_pack_cmd(cw
++, tf
->hob_nsect
, ATA_REG_NSECT
, 0);
1943 case ATA_CMD_FPDMA_READ
:
1944 case ATA_CMD_FPDMA_WRITE
:
1945 mv_crqb_pack_cmd(cw
++, tf
->hob_feature
, ATA_REG_FEATURE
, 0);
1946 mv_crqb_pack_cmd(cw
++, tf
->feature
, ATA_REG_FEATURE
, 0);
1949 /* The only other commands EDMA supports in non-queued and
1950 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
1951 * of which are defined/used by Linux. If we get here, this
1952 * driver needs work.
1954 * FIXME: modify libata to give qc_prep a return value and
1955 * return error here.
1957 BUG_ON(tf
->command
);
1960 mv_crqb_pack_cmd(cw
++, tf
->nsect
, ATA_REG_NSECT
, 0);
1961 mv_crqb_pack_cmd(cw
++, tf
->hob_lbal
, ATA_REG_LBAL
, 0);
1962 mv_crqb_pack_cmd(cw
++, tf
->lbal
, ATA_REG_LBAL
, 0);
1963 mv_crqb_pack_cmd(cw
++, tf
->hob_lbam
, ATA_REG_LBAM
, 0);
1964 mv_crqb_pack_cmd(cw
++, tf
->lbam
, ATA_REG_LBAM
, 0);
1965 mv_crqb_pack_cmd(cw
++, tf
->hob_lbah
, ATA_REG_LBAH
, 0);
1966 mv_crqb_pack_cmd(cw
++, tf
->lbah
, ATA_REG_LBAH
, 0);
1967 mv_crqb_pack_cmd(cw
++, tf
->device
, ATA_REG_DEVICE
, 0);
1968 mv_crqb_pack_cmd(cw
++, tf
->command
, ATA_REG_CMD
, 1); /* last */
1970 if (!(qc
->flags
& ATA_QCFLAG_DMAMAP
))
1976 * mv_qc_prep_iie - Host specific command preparation.
1977 * @qc: queued command to prepare
1979 * This routine simply redirects to the general purpose routine
1980 * if command is not DMA. Else, it handles prep of the CRQB
1981 * (command request block), does some sanity checking, and calls
1982 * the SG load routine.
1985 * Inherited from caller.
1987 static void mv_qc_prep_iie(struct ata_queued_cmd
*qc
)
1989 struct ata_port
*ap
= qc
->ap
;
1990 struct mv_port_priv
*pp
= ap
->private_data
;
1991 struct mv_crqb_iie
*crqb
;
1992 struct ata_taskfile
*tf
= &qc
->tf
;
1996 if ((tf
->protocol
!= ATA_PROT_DMA
) &&
1997 (tf
->protocol
!= ATA_PROT_NCQ
))
2000 /* Fill in Gen IIE command request block */
2001 if (!(tf
->flags
& ATA_TFLAG_WRITE
))
2002 flags
|= CRQB_FLAG_READ
;
2004 WARN_ON(MV_MAX_Q_DEPTH
<= qc
->tag
);
2005 flags
|= qc
->tag
<< CRQB_TAG_SHIFT
;
2006 flags
|= qc
->tag
<< CRQB_HOSTQ_SHIFT
;
2007 flags
|= (qc
->dev
->link
->pmp
& 0xf) << CRQB_PMP_SHIFT
;
2009 /* get current queue index from software */
2010 in_index
= pp
->req_idx
;
2012 crqb
= (struct mv_crqb_iie
*) &pp
->crqb
[in_index
];
2013 crqb
->addr
= cpu_to_le32(pp
->sg_tbl_dma
[qc
->tag
] & 0xffffffff);
2014 crqb
->addr_hi
= cpu_to_le32((pp
->sg_tbl_dma
[qc
->tag
] >> 16) >> 16);
2015 crqb
->flags
= cpu_to_le32(flags
);
2017 crqb
->ata_cmd
[0] = cpu_to_le32(
2018 (tf
->command
<< 16) |
2021 crqb
->ata_cmd
[1] = cpu_to_le32(
2027 crqb
->ata_cmd
[2] = cpu_to_le32(
2028 (tf
->hob_lbal
<< 0) |
2029 (tf
->hob_lbam
<< 8) |
2030 (tf
->hob_lbah
<< 16) |
2031 (tf
->hob_feature
<< 24)
2033 crqb
->ata_cmd
[3] = cpu_to_le32(
2035 (tf
->hob_nsect
<< 8)
2038 if (!(qc
->flags
& ATA_QCFLAG_DMAMAP
))
2044 * mv_sff_check_status - fetch device status, if valid
2045 * @ap: ATA port to fetch status from
2047 * When using command issue via mv_qc_issue_fis(),
2048 * the initial ATA_BUSY state does not show up in the
2049 * ATA status (shadow) register. This can confuse libata!
2051 * So we have a hook here to fake ATA_BUSY for that situation,
2052 * until the first time a BUSY, DRQ, or ERR bit is seen.
2054 * The rest of the time, it simply returns the ATA status register.
2056 static u8
mv_sff_check_status(struct ata_port
*ap
)
2058 u8 stat
= ioread8(ap
->ioaddr
.status_addr
);
2059 struct mv_port_priv
*pp
= ap
->private_data
;
2061 if (pp
->pp_flags
& MV_PP_FLAG_FAKE_ATA_BUSY
) {
2062 if (stat
& (ATA_BUSY
| ATA_DRQ
| ATA_ERR
))
2063 pp
->pp_flags
&= ~MV_PP_FLAG_FAKE_ATA_BUSY
;
2071 * mv_send_fis - Send a FIS, using the "Vendor-Unique FIS" register
2072 * @fis: fis to be sent
2073 * @nwords: number of 32-bit words in the fis
2075 static unsigned int mv_send_fis(struct ata_port
*ap
, u32
*fis
, int nwords
)
2077 void __iomem
*port_mmio
= mv_ap_base(ap
);
2078 u32 ifctl
, old_ifctl
, ifstat
;
2079 int i
, timeout
= 200, final_word
= nwords
- 1;
2081 /* Initiate FIS transmission mode */
2082 old_ifctl
= readl(port_mmio
+ SATA_IFCTL
);
2083 ifctl
= 0x100 | (old_ifctl
& 0xf);
2084 writelfl(ifctl
, port_mmio
+ SATA_IFCTL
);
2086 /* Send all words of the FIS except for the final word */
2087 for (i
= 0; i
< final_word
; ++i
)
2088 writel(fis
[i
], port_mmio
+ VENDOR_UNIQUE_FIS
);
2090 /* Flag end-of-transmission, and then send the final word */
2091 writelfl(ifctl
| 0x200, port_mmio
+ SATA_IFCTL
);
2092 writelfl(fis
[final_word
], port_mmio
+ VENDOR_UNIQUE_FIS
);
2095 * Wait for FIS transmission to complete.
2096 * This typically takes just a single iteration.
2099 ifstat
= readl(port_mmio
+ SATA_IFSTAT
);
2100 } while (!(ifstat
& 0x1000) && --timeout
);
2102 /* Restore original port configuration */
2103 writelfl(old_ifctl
, port_mmio
+ SATA_IFCTL
);
2105 /* See if it worked */
2106 if ((ifstat
& 0x3000) != 0x1000) {
2107 ata_port_printk(ap
, KERN_WARNING
,
2108 "%s transmission error, ifstat=%08x\n",
2110 return AC_ERR_OTHER
;
2116 * mv_qc_issue_fis - Issue a command directly as a FIS
2117 * @qc: queued command to start
2119 * Note that the ATA shadow registers are not updated
2120 * after command issue, so the device will appear "READY"
2121 * if polled, even while it is BUSY processing the command.
2123 * So we use a status hook to fake ATA_BUSY until the drive changes state.
2125 * Note: we don't get updated shadow regs on *completion*
2126 * of non-data commands. So avoid sending them via this function,
2127 * as they will appear to have completed immediately.
2129 * GEN_IIE has special registers that we could get the result tf from,
2130 * but earlier chipsets do not. For now, we ignore those registers.
2132 static unsigned int mv_qc_issue_fis(struct ata_queued_cmd
*qc
)
2134 struct ata_port
*ap
= qc
->ap
;
2135 struct mv_port_priv
*pp
= ap
->private_data
;
2136 struct ata_link
*link
= qc
->dev
->link
;
2140 ata_tf_to_fis(&qc
->tf
, link
->pmp
, 1, (void *)fis
);
2141 err
= mv_send_fis(ap
, fis
, sizeof(fis
) / sizeof(fis
[0]));
2145 switch (qc
->tf
.protocol
) {
2146 case ATAPI_PROT_PIO
:
2147 pp
->pp_flags
|= MV_PP_FLAG_FAKE_ATA_BUSY
;
2149 case ATAPI_PROT_NODATA
:
2150 ap
->hsm_task_state
= HSM_ST_FIRST
;
2153 pp
->pp_flags
|= MV_PP_FLAG_FAKE_ATA_BUSY
;
2154 if (qc
->tf
.flags
& ATA_TFLAG_WRITE
)
2155 ap
->hsm_task_state
= HSM_ST_FIRST
;
2157 ap
->hsm_task_state
= HSM_ST
;
2160 ap
->hsm_task_state
= HSM_ST_LAST
;
2164 if (qc
->tf
.flags
& ATA_TFLAG_POLLING
)
2165 ata_pio_queue_task(ap
, qc
, 0);
2170 * mv_qc_issue - Initiate a command to the host
2171 * @qc: queued command to start
2173 * This routine simply redirects to the general purpose routine
2174 * if command is not DMA. Else, it sanity checks our local
2175 * caches of the request producer/consumer indices then enables
2176 * DMA and bumps the request producer index.
2179 * Inherited from caller.
2181 static unsigned int mv_qc_issue(struct ata_queued_cmd
*qc
)
2183 static int limit_warnings
= 10;
2184 struct ata_port
*ap
= qc
->ap
;
2185 void __iomem
*port_mmio
= mv_ap_base(ap
);
2186 struct mv_port_priv
*pp
= ap
->private_data
;
2188 unsigned int port_irqs
;
2190 pp
->pp_flags
&= ~MV_PP_FLAG_FAKE_ATA_BUSY
; /* paranoia */
2192 switch (qc
->tf
.protocol
) {
2195 mv_start_edma(ap
, port_mmio
, pp
, qc
->tf
.protocol
);
2196 pp
->req_idx
= (pp
->req_idx
+ 1) & MV_MAX_Q_DEPTH_MASK
;
2197 in_index
= pp
->req_idx
<< EDMA_REQ_Q_PTR_SHIFT
;
2199 /* Write the request in pointer to kick the EDMA to life */
2200 writelfl((pp
->crqb_dma
& EDMA_REQ_Q_BASE_LO_MASK
) | in_index
,
2201 port_mmio
+ EDMA_REQ_Q_IN_PTR
);
2206 * Errata SATA#16, SATA#24: warn if multiple DRQs expected.
2208 * Someday, we might implement special polling workarounds
2209 * for these, but it all seems rather unnecessary since we
2210 * normally use only DMA for commands which transfer more
2211 * than a single block of data.
2213 * Much of the time, this could just work regardless.
2214 * So for now, just log the incident, and allow the attempt.
2216 if (limit_warnings
> 0 && (qc
->nbytes
/ qc
->sect_size
) > 1) {
2218 ata_link_printk(qc
->dev
->link
, KERN_WARNING
, DRV_NAME
2219 ": attempting PIO w/multiple DRQ: "
2220 "this may fail due to h/w errata\n");
2223 case ATA_PROT_NODATA
:
2224 case ATAPI_PROT_PIO
:
2225 case ATAPI_PROT_NODATA
:
2226 if (ap
->flags
& ATA_FLAG_PIO_POLLING
)
2227 qc
->tf
.flags
|= ATA_TFLAG_POLLING
;
2231 if (qc
->tf
.flags
& ATA_TFLAG_POLLING
)
2232 port_irqs
= ERR_IRQ
; /* mask device interrupt when polling */
2234 port_irqs
= ERR_IRQ
| DONE_IRQ
; /* unmask all interrupts */
2237 * We're about to send a non-EDMA capable command to the
2238 * port. Turn off EDMA so there won't be problems accessing
2239 * shadow block, etc registers.
2242 mv_clear_and_enable_port_irqs(ap
, mv_ap_base(ap
), port_irqs
);
2243 mv_pmp_select(ap
, qc
->dev
->link
->pmp
);
2245 if (qc
->tf
.command
== ATA_CMD_READ_LOG_EXT
) {
2246 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
2248 * Workaround for 88SX60x1 FEr SATA#25 (part 2).
2250 * After any NCQ error, the READ_LOG_EXT command
2251 * from libata-eh *must* use mv_qc_issue_fis().
2252 * Otherwise it might fail, due to chip errata.
2254 * Rather than special-case it, we'll just *always*
2255 * use this method here for READ_LOG_EXT, making for
2258 if (IS_GEN_II(hpriv
))
2259 return mv_qc_issue_fis(qc
);
2261 return ata_sff_qc_issue(qc
);
2264 static struct ata_queued_cmd
*mv_get_active_qc(struct ata_port
*ap
)
2266 struct mv_port_priv
*pp
= ap
->private_data
;
2267 struct ata_queued_cmd
*qc
;
2269 if (pp
->pp_flags
& MV_PP_FLAG_NCQ_EN
)
2271 qc
= ata_qc_from_tag(ap
, ap
->link
.active_tag
);
2273 if (qc
->tf
.flags
& ATA_TFLAG_POLLING
)
2275 else if (!(qc
->flags
& ATA_QCFLAG_ACTIVE
))
2281 static void mv_pmp_error_handler(struct ata_port
*ap
)
2283 unsigned int pmp
, pmp_map
;
2284 struct mv_port_priv
*pp
= ap
->private_data
;
2286 if (pp
->pp_flags
& MV_PP_FLAG_DELAYED_EH
) {
2288 * Perform NCQ error analysis on failed PMPs
2289 * before we freeze the port entirely.
2291 * The failed PMPs are marked earlier by mv_pmp_eh_prep().
2293 pmp_map
= pp
->delayed_eh_pmp_map
;
2294 pp
->pp_flags
&= ~MV_PP_FLAG_DELAYED_EH
;
2295 for (pmp
= 0; pmp_map
!= 0; pmp
++) {
2296 unsigned int this_pmp
= (1 << pmp
);
2297 if (pmp_map
& this_pmp
) {
2298 struct ata_link
*link
= &ap
->pmp_link
[pmp
];
2299 pmp_map
&= ~this_pmp
;
2300 ata_eh_analyze_ncq_error(link
);
2303 ata_port_freeze(ap
);
2305 sata_pmp_error_handler(ap
);
2308 static unsigned int mv_get_err_pmp_map(struct ata_port
*ap
)
2310 void __iomem
*port_mmio
= mv_ap_base(ap
);
2312 return readl(port_mmio
+ SATA_TESTCTL
) >> 16;
2315 static void mv_pmp_eh_prep(struct ata_port
*ap
, unsigned int pmp_map
)
2317 struct ata_eh_info
*ehi
;
2321 * Initialize EH info for PMPs which saw device errors
2323 ehi
= &ap
->link
.eh_info
;
2324 for (pmp
= 0; pmp_map
!= 0; pmp
++) {
2325 unsigned int this_pmp
= (1 << pmp
);
2326 if (pmp_map
& this_pmp
) {
2327 struct ata_link
*link
= &ap
->pmp_link
[pmp
];
2329 pmp_map
&= ~this_pmp
;
2330 ehi
= &link
->eh_info
;
2331 ata_ehi_clear_desc(ehi
);
2332 ata_ehi_push_desc(ehi
, "dev err");
2333 ehi
->err_mask
|= AC_ERR_DEV
;
2334 ehi
->action
|= ATA_EH_RESET
;
2335 ata_link_abort(link
);
2340 static int mv_req_q_empty(struct ata_port
*ap
)
2342 void __iomem
*port_mmio
= mv_ap_base(ap
);
2343 u32 in_ptr
, out_ptr
;
2345 in_ptr
= (readl(port_mmio
+ EDMA_REQ_Q_IN_PTR
)
2346 >> EDMA_REQ_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
;
2347 out_ptr
= (readl(port_mmio
+ EDMA_REQ_Q_OUT_PTR
)
2348 >> EDMA_REQ_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
;
2349 return (in_ptr
== out_ptr
); /* 1 == queue_is_empty */
2352 static int mv_handle_fbs_ncq_dev_err(struct ata_port
*ap
)
2354 struct mv_port_priv
*pp
= ap
->private_data
;
2356 unsigned int old_map
, new_map
;
2359 * Device error during FBS+NCQ operation:
2361 * Set a port flag to prevent further I/O being enqueued.
2362 * Leave the EDMA running to drain outstanding commands from this port.
2363 * Perform the post-mortem/EH only when all responses are complete.
2364 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2).
2366 if (!(pp
->pp_flags
& MV_PP_FLAG_DELAYED_EH
)) {
2367 pp
->pp_flags
|= MV_PP_FLAG_DELAYED_EH
;
2368 pp
->delayed_eh_pmp_map
= 0;
2370 old_map
= pp
->delayed_eh_pmp_map
;
2371 new_map
= old_map
| mv_get_err_pmp_map(ap
);
2373 if (old_map
!= new_map
) {
2374 pp
->delayed_eh_pmp_map
= new_map
;
2375 mv_pmp_eh_prep(ap
, new_map
& ~old_map
);
2377 failed_links
= hweight16(new_map
);
2379 ata_port_printk(ap
, KERN_INFO
, "%s: pmp_map=%04x qc_map=%04x "
2380 "failed_links=%d nr_active_links=%d\n",
2381 __func__
, pp
->delayed_eh_pmp_map
,
2382 ap
->qc_active
, failed_links
,
2383 ap
->nr_active_links
);
2385 if (ap
->nr_active_links
<= failed_links
&& mv_req_q_empty(ap
)) {
2386 mv_process_crpb_entries(ap
, pp
);
2389 ata_port_printk(ap
, KERN_INFO
, "%s: done\n", __func__
);
2390 return 1; /* handled */
2392 ata_port_printk(ap
, KERN_INFO
, "%s: waiting\n", __func__
);
2393 return 1; /* handled */
2396 static int mv_handle_fbs_non_ncq_dev_err(struct ata_port
*ap
)
2399 * Possible future enhancement:
2401 * FBS+non-NCQ operation is not yet implemented.
2402 * See related notes in mv_edma_cfg().
2404 * Device error during FBS+non-NCQ operation:
2406 * We need to snapshot the shadow registers for each failed command.
2407 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3).
2409 return 0; /* not handled */
2412 static int mv_handle_dev_err(struct ata_port
*ap
, u32 edma_err_cause
)
2414 struct mv_port_priv
*pp
= ap
->private_data
;
2416 if (!(pp
->pp_flags
& MV_PP_FLAG_EDMA_EN
))
2417 return 0; /* EDMA was not active: not handled */
2418 if (!(pp
->pp_flags
& MV_PP_FLAG_FBS_EN
))
2419 return 0; /* FBS was not active: not handled */
2421 if (!(edma_err_cause
& EDMA_ERR_DEV
))
2422 return 0; /* non DEV error: not handled */
2423 edma_err_cause
&= ~EDMA_ERR_IRQ_TRANSIENT
;
2424 if (edma_err_cause
& ~(EDMA_ERR_DEV
| EDMA_ERR_SELF_DIS
))
2425 return 0; /* other problems: not handled */
2427 if (pp
->pp_flags
& MV_PP_FLAG_NCQ_EN
) {
2429 * EDMA should NOT have self-disabled for this case.
2430 * If it did, then something is wrong elsewhere,
2431 * and we cannot handle it here.
2433 if (edma_err_cause
& EDMA_ERR_SELF_DIS
) {
2434 ata_port_printk(ap
, KERN_WARNING
,
2435 "%s: err_cause=0x%x pp_flags=0x%x\n",
2436 __func__
, edma_err_cause
, pp
->pp_flags
);
2437 return 0; /* not handled */
2439 return mv_handle_fbs_ncq_dev_err(ap
);
2442 * EDMA should have self-disabled for this case.
2443 * If it did not, then something is wrong elsewhere,
2444 * and we cannot handle it here.
2446 if (!(edma_err_cause
& EDMA_ERR_SELF_DIS
)) {
2447 ata_port_printk(ap
, KERN_WARNING
,
2448 "%s: err_cause=0x%x pp_flags=0x%x\n",
2449 __func__
, edma_err_cause
, pp
->pp_flags
);
2450 return 0; /* not handled */
2452 return mv_handle_fbs_non_ncq_dev_err(ap
);
2454 return 0; /* not handled */
2457 static void mv_unexpected_intr(struct ata_port
*ap
, int edma_was_enabled
)
2459 struct ata_eh_info
*ehi
= &ap
->link
.eh_info
;
2460 char *when
= "idle";
2462 ata_ehi_clear_desc(ehi
);
2463 if (!ap
|| (ap
->flags
& ATA_FLAG_DISABLED
)) {
2465 } else if (edma_was_enabled
) {
2466 when
= "EDMA enabled";
2468 struct ata_queued_cmd
*qc
= ata_qc_from_tag(ap
, ap
->link
.active_tag
);
2469 if (qc
&& (qc
->tf
.flags
& ATA_TFLAG_POLLING
))
2472 ata_ehi_push_desc(ehi
, "unexpected device interrupt while %s", when
);
2473 ehi
->err_mask
|= AC_ERR_OTHER
;
2474 ehi
->action
|= ATA_EH_RESET
;
2475 ata_port_freeze(ap
);
2479 * mv_err_intr - Handle error interrupts on the port
2480 * @ap: ATA channel to manipulate
2482 * Most cases require a full reset of the chip's state machine,
2483 * which also performs a COMRESET.
2484 * Also, if the port disabled DMA, update our cached copy to match.
2487 * Inherited from caller.
2489 static void mv_err_intr(struct ata_port
*ap
)
2491 void __iomem
*port_mmio
= mv_ap_base(ap
);
2492 u32 edma_err_cause
, eh_freeze_mask
, serr
= 0;
2494 struct mv_port_priv
*pp
= ap
->private_data
;
2495 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
2496 unsigned int action
= 0, err_mask
= 0;
2497 struct ata_eh_info
*ehi
= &ap
->link
.eh_info
;
2498 struct ata_queued_cmd
*qc
;
2502 * Read and clear the SError and err_cause bits.
2503 * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear
2504 * the FIS_IRQ_CAUSE register before clearing edma_err_cause.
2506 sata_scr_read(&ap
->link
, SCR_ERROR
, &serr
);
2507 sata_scr_write_flush(&ap
->link
, SCR_ERROR
, serr
);
2509 edma_err_cause
= readl(port_mmio
+ EDMA_ERR_IRQ_CAUSE
);
2510 if (IS_GEN_IIE(hpriv
) && (edma_err_cause
& EDMA_ERR_TRANS_IRQ_7
)) {
2511 fis_cause
= readl(port_mmio
+ FIS_IRQ_CAUSE
);
2512 writelfl(~fis_cause
, port_mmio
+ FIS_IRQ_CAUSE
);
2514 writelfl(~edma_err_cause
, port_mmio
+ EDMA_ERR_IRQ_CAUSE
);
2516 if (edma_err_cause
& EDMA_ERR_DEV
) {
2518 * Device errors during FIS-based switching operation
2519 * require special handling.
2521 if (mv_handle_dev_err(ap
, edma_err_cause
))
2525 qc
= mv_get_active_qc(ap
);
2526 ata_ehi_clear_desc(ehi
);
2527 ata_ehi_push_desc(ehi
, "edma_err_cause=%08x pp_flags=%08x",
2528 edma_err_cause
, pp
->pp_flags
);
2530 if (IS_GEN_IIE(hpriv
) && (edma_err_cause
& EDMA_ERR_TRANS_IRQ_7
)) {
2531 ata_ehi_push_desc(ehi
, "fis_cause=%08x", fis_cause
);
2532 if (fis_cause
& FIS_IRQ_CAUSE_AN
) {
2533 u32 ec
= edma_err_cause
&
2534 ~(EDMA_ERR_TRANS_IRQ_7
| EDMA_ERR_IRQ_TRANSIENT
);
2535 sata_async_notification(ap
);
2537 return; /* Just an AN; no need for the nukes */
2538 ata_ehi_push_desc(ehi
, "SDB notify");
2542 * All generations share these EDMA error cause bits:
2544 if (edma_err_cause
& EDMA_ERR_DEV
) {
2545 err_mask
|= AC_ERR_DEV
;
2546 action
|= ATA_EH_RESET
;
2547 ata_ehi_push_desc(ehi
, "dev error");
2549 if (edma_err_cause
& (EDMA_ERR_D_PAR
| EDMA_ERR_PRD_PAR
|
2550 EDMA_ERR_CRQB_PAR
| EDMA_ERR_CRPB_PAR
|
2551 EDMA_ERR_INTRL_PAR
)) {
2552 err_mask
|= AC_ERR_ATA_BUS
;
2553 action
|= ATA_EH_RESET
;
2554 ata_ehi_push_desc(ehi
, "parity error");
2556 if (edma_err_cause
& (EDMA_ERR_DEV_DCON
| EDMA_ERR_DEV_CON
)) {
2557 ata_ehi_hotplugged(ehi
);
2558 ata_ehi_push_desc(ehi
, edma_err_cause
& EDMA_ERR_DEV_DCON
?
2559 "dev disconnect" : "dev connect");
2560 action
|= ATA_EH_RESET
;
2564 * Gen-I has a different SELF_DIS bit,
2565 * different FREEZE bits, and no SERR bit:
2567 if (IS_GEN_I(hpriv
)) {
2568 eh_freeze_mask
= EDMA_EH_FREEZE_5
;
2569 if (edma_err_cause
& EDMA_ERR_SELF_DIS_5
) {
2570 pp
->pp_flags
&= ~MV_PP_FLAG_EDMA_EN
;
2571 ata_ehi_push_desc(ehi
, "EDMA self-disable");
2574 eh_freeze_mask
= EDMA_EH_FREEZE
;
2575 if (edma_err_cause
& EDMA_ERR_SELF_DIS
) {
2576 pp
->pp_flags
&= ~MV_PP_FLAG_EDMA_EN
;
2577 ata_ehi_push_desc(ehi
, "EDMA self-disable");
2579 if (edma_err_cause
& EDMA_ERR_SERR
) {
2580 ata_ehi_push_desc(ehi
, "SError=%08x", serr
);
2581 err_mask
|= AC_ERR_ATA_BUS
;
2582 action
|= ATA_EH_RESET
;
2587 err_mask
= AC_ERR_OTHER
;
2588 action
|= ATA_EH_RESET
;
2591 ehi
->serror
|= serr
;
2592 ehi
->action
|= action
;
2595 qc
->err_mask
|= err_mask
;
2597 ehi
->err_mask
|= err_mask
;
2599 if (err_mask
== AC_ERR_DEV
) {
2601 * Cannot do ata_port_freeze() here,
2602 * because it would kill PIO access,
2603 * which is needed for further diagnosis.
2607 } else if (edma_err_cause
& eh_freeze_mask
) {
2609 * Note to self: ata_port_freeze() calls ata_port_abort()
2611 ata_port_freeze(ap
);
2618 ata_link_abort(qc
->dev
->link
);
2624 static void mv_process_crpb_response(struct ata_port
*ap
,
2625 struct mv_crpb
*response
, unsigned int tag
, int ncq_enabled
)
2627 struct ata_queued_cmd
*qc
= ata_qc_from_tag(ap
, tag
);
2631 u16 edma_status
= le16_to_cpu(response
->flags
);
2633 * edma_status from a response queue entry:
2634 * LSB is from EDMA_ERR_IRQ_CAUSE (non-NCQ only).
2635 * MSB is saved ATA status from command completion.
2638 u8 err_cause
= edma_status
& 0xff & ~EDMA_ERR_DEV
;
2641 * Error will be seen/handled by mv_err_intr().
2642 * So do nothing at all here.
2647 ata_status
= edma_status
>> CRPB_FLAG_STATUS_SHIFT
;
2648 if (!ac_err_mask(ata_status
))
2649 ata_qc_complete(qc
);
2650 /* else: leave it for mv_err_intr() */
2652 ata_port_printk(ap
, KERN_ERR
, "%s: no qc for tag=%d\n",
2657 static void mv_process_crpb_entries(struct ata_port
*ap
, struct mv_port_priv
*pp
)
2659 void __iomem
*port_mmio
= mv_ap_base(ap
);
2660 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
2662 bool work_done
= false;
2663 int ncq_enabled
= (pp
->pp_flags
& MV_PP_FLAG_NCQ_EN
);
2665 /* Get the hardware queue position index */
2666 in_index
= (readl(port_mmio
+ EDMA_RSP_Q_IN_PTR
)
2667 >> EDMA_RSP_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
;
2669 /* Process new responses from since the last time we looked */
2670 while (in_index
!= pp
->resp_idx
) {
2672 struct mv_crpb
*response
= &pp
->crpb
[pp
->resp_idx
];
2674 pp
->resp_idx
= (pp
->resp_idx
+ 1) & MV_MAX_Q_DEPTH_MASK
;
2676 if (IS_GEN_I(hpriv
)) {
2677 /* 50xx: no NCQ, only one command active at a time */
2678 tag
= ap
->link
.active_tag
;
2680 /* Gen II/IIE: get command tag from CRPB entry */
2681 tag
= le16_to_cpu(response
->id
) & 0x1f;
2683 mv_process_crpb_response(ap
, response
, tag
, ncq_enabled
);
2687 /* Update the software queue position index in hardware */
2689 writelfl((pp
->crpb_dma
& EDMA_RSP_Q_BASE_LO_MASK
) |
2690 (pp
->resp_idx
<< EDMA_RSP_Q_PTR_SHIFT
),
2691 port_mmio
+ EDMA_RSP_Q_OUT_PTR
);
2694 static void mv_port_intr(struct ata_port
*ap
, u32 port_cause
)
2696 struct mv_port_priv
*pp
;
2697 int edma_was_enabled
;
2699 if (!ap
|| (ap
->flags
& ATA_FLAG_DISABLED
)) {
2700 mv_unexpected_intr(ap
, 0);
2704 * Grab a snapshot of the EDMA_EN flag setting,
2705 * so that we have a consistent view for this port,
2706 * even if something we call of our routines changes it.
2708 pp
= ap
->private_data
;
2709 edma_was_enabled
= (pp
->pp_flags
& MV_PP_FLAG_EDMA_EN
);
2711 * Process completed CRPB response(s) before other events.
2713 if (edma_was_enabled
&& (port_cause
& DONE_IRQ
)) {
2714 mv_process_crpb_entries(ap
, pp
);
2715 if (pp
->pp_flags
& MV_PP_FLAG_DELAYED_EH
)
2716 mv_handle_fbs_ncq_dev_err(ap
);
2719 * Handle chip-reported errors, or continue on to handle PIO.
2721 if (unlikely(port_cause
& ERR_IRQ
)) {
2723 } else if (!edma_was_enabled
) {
2724 struct ata_queued_cmd
*qc
= mv_get_active_qc(ap
);
2726 ata_sff_host_intr(ap
, qc
);
2728 mv_unexpected_intr(ap
, edma_was_enabled
);
2733 * mv_host_intr - Handle all interrupts on the given host controller
2734 * @host: host specific structure
2735 * @main_irq_cause: Main interrupt cause register for the chip.
2738 * Inherited from caller.
2740 static int mv_host_intr(struct ata_host
*host
, u32 main_irq_cause
)
2742 struct mv_host_priv
*hpriv
= host
->private_data
;
2743 void __iomem
*mmio
= hpriv
->base
, *hc_mmio
;
2744 unsigned int handled
= 0, port
;
2746 /* If asserted, clear the "all ports" IRQ coalescing bit */
2747 if (main_irq_cause
& ALL_PORTS_COAL_DONE
)
2748 writel(~ALL_PORTS_COAL_IRQ
, mmio
+ IRQ_COAL_CAUSE
);
2750 for (port
= 0; port
< hpriv
->n_ports
; port
++) {
2751 struct ata_port
*ap
= host
->ports
[port
];
2752 unsigned int p
, shift
, hardport
, port_cause
;
2754 MV_PORT_TO_SHIFT_AND_HARDPORT(port
, shift
, hardport
);
2756 * Each hc within the host has its own hc_irq_cause register,
2757 * where the interrupting ports bits get ack'd.
2759 if (hardport
== 0) { /* first port on this hc ? */
2760 u32 hc_cause
= (main_irq_cause
>> shift
) & HC0_IRQ_PEND
;
2761 u32 port_mask
, ack_irqs
;
2763 * Skip this entire hc if nothing pending for any ports
2766 port
+= MV_PORTS_PER_HC
- 1;
2770 * We don't need/want to read the hc_irq_cause register,
2771 * because doing so hurts performance, and
2772 * main_irq_cause already gives us everything we need.
2774 * But we do have to *write* to the hc_irq_cause to ack
2775 * the ports that we are handling this time through.
2777 * This requires that we create a bitmap for those
2778 * ports which interrupted us, and use that bitmap
2779 * to ack (only) those ports via hc_irq_cause.
2782 if (hc_cause
& PORTS_0_3_COAL_DONE
)
2783 ack_irqs
= HC_COAL_IRQ
;
2784 for (p
= 0; p
< MV_PORTS_PER_HC
; ++p
) {
2785 if ((port
+ p
) >= hpriv
->n_ports
)
2787 port_mask
= (DONE_IRQ
| ERR_IRQ
) << (p
* 2);
2788 if (hc_cause
& port_mask
)
2789 ack_irqs
|= (DMA_IRQ
| DEV_IRQ
) << p
;
2791 hc_mmio
= mv_hc_base_from_port(mmio
, port
);
2792 writelfl(~ack_irqs
, hc_mmio
+ HC_IRQ_CAUSE
);
2796 * Handle interrupts signalled for this port:
2798 port_cause
= (main_irq_cause
>> shift
) & (DONE_IRQ
| ERR_IRQ
);
2800 mv_port_intr(ap
, port_cause
);
2805 static int mv_pci_error(struct ata_host
*host
, void __iomem
*mmio
)
2807 struct mv_host_priv
*hpriv
= host
->private_data
;
2808 struct ata_port
*ap
;
2809 struct ata_queued_cmd
*qc
;
2810 struct ata_eh_info
*ehi
;
2811 unsigned int i
, err_mask
, printed
= 0;
2814 err_cause
= readl(mmio
+ hpriv
->irq_cause_offset
);
2816 dev_printk(KERN_ERR
, host
->dev
, "PCI ERROR; PCI IRQ cause=0x%08x\n",
2819 DPRINTK("All regs @ PCI error\n");
2820 mv_dump_all_regs(mmio
, -1, to_pci_dev(host
->dev
));
2822 writelfl(0, mmio
+ hpriv
->irq_cause_offset
);
2824 for (i
= 0; i
< host
->n_ports
; i
++) {
2825 ap
= host
->ports
[i
];
2826 if (!ata_link_offline(&ap
->link
)) {
2827 ehi
= &ap
->link
.eh_info
;
2828 ata_ehi_clear_desc(ehi
);
2830 ata_ehi_push_desc(ehi
,
2831 "PCI err cause 0x%08x", err_cause
);
2832 err_mask
= AC_ERR_HOST_BUS
;
2833 ehi
->action
= ATA_EH_RESET
;
2834 qc
= ata_qc_from_tag(ap
, ap
->link
.active_tag
);
2836 qc
->err_mask
|= err_mask
;
2838 ehi
->err_mask
|= err_mask
;
2840 ata_port_freeze(ap
);
2843 return 1; /* handled */
2847 * mv_interrupt - Main interrupt event handler
2849 * @dev_instance: private data; in this case the host structure
2851 * Read the read only register to determine if any host
2852 * controllers have pending interrupts. If so, call lower level
2853 * routine to handle. Also check for PCI errors which are only
2857 * This routine holds the host lock while processing pending
2860 static irqreturn_t
mv_interrupt(int irq
, void *dev_instance
)
2862 struct ata_host
*host
= dev_instance
;
2863 struct mv_host_priv
*hpriv
= host
->private_data
;
2864 unsigned int handled
= 0;
2865 int using_msi
= hpriv
->hp_flags
& MV_HP_FLAG_MSI
;
2866 u32 main_irq_cause
, pending_irqs
;
2868 spin_lock(&host
->lock
);
2870 /* for MSI: block new interrupts while in here */
2872 mv_write_main_irq_mask(0, hpriv
);
2874 main_irq_cause
= readl(hpriv
->main_irq_cause_addr
);
2875 pending_irqs
= main_irq_cause
& hpriv
->main_irq_mask
;
2877 * Deal with cases where we either have nothing pending, or have read
2878 * a bogus register value which can indicate HW removal or PCI fault.
2880 if (pending_irqs
&& main_irq_cause
!= 0xffffffffU
) {
2881 if (unlikely((pending_irqs
& PCI_ERR
) && !IS_SOC(hpriv
)))
2882 handled
= mv_pci_error(host
, hpriv
->base
);
2884 handled
= mv_host_intr(host
, pending_irqs
);
2887 /* for MSI: unmask; interrupt cause bits will retrigger now */
2889 mv_write_main_irq_mask(hpriv
->main_irq_mask
, hpriv
);
2891 spin_unlock(&host
->lock
);
2893 return IRQ_RETVAL(handled
);
2896 static unsigned int mv5_scr_offset(unsigned int sc_reg_in
)
2900 switch (sc_reg_in
) {
2904 ofs
= sc_reg_in
* sizeof(u32
);
2913 static int mv5_scr_read(struct ata_link
*link
, unsigned int sc_reg_in
, u32
*val
)
2915 struct mv_host_priv
*hpriv
= link
->ap
->host
->private_data
;
2916 void __iomem
*mmio
= hpriv
->base
;
2917 void __iomem
*addr
= mv5_phy_base(mmio
, link
->ap
->port_no
);
2918 unsigned int ofs
= mv5_scr_offset(sc_reg_in
);
2920 if (ofs
!= 0xffffffffU
) {
2921 *val
= readl(addr
+ ofs
);
2927 static int mv5_scr_write(struct ata_link
*link
, unsigned int sc_reg_in
, u32 val
)
2929 struct mv_host_priv
*hpriv
= link
->ap
->host
->private_data
;
2930 void __iomem
*mmio
= hpriv
->base
;
2931 void __iomem
*addr
= mv5_phy_base(mmio
, link
->ap
->port_no
);
2932 unsigned int ofs
= mv5_scr_offset(sc_reg_in
);
2934 if (ofs
!= 0xffffffffU
) {
2935 writelfl(val
, addr
+ ofs
);
2941 static void mv5_reset_bus(struct ata_host
*host
, void __iomem
*mmio
)
2943 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
2946 early_5080
= (pdev
->device
== 0x5080) && (pdev
->revision
== 0);
2949 u32 tmp
= readl(mmio
+ MV_PCI_EXP_ROM_BAR_CTL
);
2951 writel(tmp
, mmio
+ MV_PCI_EXP_ROM_BAR_CTL
);
2954 mv_reset_pci_bus(host
, mmio
);
2957 static void mv5_reset_flash(struct mv_host_priv
*hpriv
, void __iomem
*mmio
)
2959 writel(0x0fcfffff, mmio
+ FLASH_CTL
);
2962 static void mv5_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
2965 void __iomem
*phy_mmio
= mv5_phy_base(mmio
, idx
);
2968 tmp
= readl(phy_mmio
+ MV5_PHY_MODE
);
2970 hpriv
->signal
[idx
].pre
= tmp
& 0x1800; /* bits 12:11 */
2971 hpriv
->signal
[idx
].amps
= tmp
& 0xe0; /* bits 7:5 */
2974 static void mv5_enable_leds(struct mv_host_priv
*hpriv
, void __iomem
*mmio
)
2978 writel(0, mmio
+ GPIO_PORT_CTL
);
2980 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
2982 tmp
= readl(mmio
+ MV_PCI_EXP_ROM_BAR_CTL
);
2984 writel(tmp
, mmio
+ MV_PCI_EXP_ROM_BAR_CTL
);
2987 static void mv5_phy_errata(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
2990 void __iomem
*phy_mmio
= mv5_phy_base(mmio
, port
);
2991 const u32 mask
= (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
2993 int fix_apm_sq
= (hpriv
->hp_flags
& MV_HP_ERRATA_50XXB0
);
2996 tmp
= readl(phy_mmio
+ MV5_LTMODE
);
2998 writel(tmp
, phy_mmio
+ MV5_LTMODE
);
3000 tmp
= readl(phy_mmio
+ MV5_PHY_CTL
);
3003 writel(tmp
, phy_mmio
+ MV5_PHY_CTL
);
3006 tmp
= readl(phy_mmio
+ MV5_PHY_MODE
);
3008 tmp
|= hpriv
->signal
[port
].pre
;
3009 tmp
|= hpriv
->signal
[port
].amps
;
3010 writel(tmp
, phy_mmio
+ MV5_PHY_MODE
);
3015 #define ZERO(reg) writel(0, port_mmio + (reg))
3016 static void mv5_reset_hc_port(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
3019 void __iomem
*port_mmio
= mv_port_base(mmio
, port
);
3021 mv_reset_channel(hpriv
, mmio
, port
);
3023 ZERO(0x028); /* command */
3024 writel(0x11f, port_mmio
+ EDMA_CFG
);
3025 ZERO(0x004); /* timer */
3026 ZERO(0x008); /* irq err cause */
3027 ZERO(0x00c); /* irq err mask */
3028 ZERO(0x010); /* rq bah */
3029 ZERO(0x014); /* rq inp */
3030 ZERO(0x018); /* rq outp */
3031 ZERO(0x01c); /* respq bah */
3032 ZERO(0x024); /* respq outp */
3033 ZERO(0x020); /* respq inp */
3034 ZERO(0x02c); /* test control */
3035 writel(0xbc, port_mmio
+ EDMA_IORDY_TMOUT
);
3039 #define ZERO(reg) writel(0, hc_mmio + (reg))
3040 static void mv5_reset_one_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
3043 void __iomem
*hc_mmio
= mv_hc_base(mmio
, hc
);
3051 tmp
= readl(hc_mmio
+ 0x20);
3054 writel(tmp
, hc_mmio
+ 0x20);
3058 static int mv5_reset_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
3061 unsigned int hc
, port
;
3063 for (hc
= 0; hc
< n_hc
; hc
++) {
3064 for (port
= 0; port
< MV_PORTS_PER_HC
; port
++)
3065 mv5_reset_hc_port(hpriv
, mmio
,
3066 (hc
* MV_PORTS_PER_HC
) + port
);
3068 mv5_reset_one_hc(hpriv
, mmio
, hc
);
3075 #define ZERO(reg) writel(0, mmio + (reg))
3076 static void mv_reset_pci_bus(struct ata_host
*host
, void __iomem
*mmio
)
3078 struct mv_host_priv
*hpriv
= host
->private_data
;
3081 tmp
= readl(mmio
+ MV_PCI_MODE
);
3083 writel(tmp
, mmio
+ MV_PCI_MODE
);
3085 ZERO(MV_PCI_DISC_TIMER
);
3086 ZERO(MV_PCI_MSI_TRIGGER
);
3087 writel(0x000100ff, mmio
+ MV_PCI_XBAR_TMOUT
);
3088 ZERO(MV_PCI_SERR_MASK
);
3089 ZERO(hpriv
->irq_cause_offset
);
3090 ZERO(hpriv
->irq_mask_offset
);
3091 ZERO(MV_PCI_ERR_LOW_ADDRESS
);
3092 ZERO(MV_PCI_ERR_HIGH_ADDRESS
);
3093 ZERO(MV_PCI_ERR_ATTRIBUTE
);
3094 ZERO(MV_PCI_ERR_COMMAND
);
3098 static void mv6_reset_flash(struct mv_host_priv
*hpriv
, void __iomem
*mmio
)
3102 mv5_reset_flash(hpriv
, mmio
);
3104 tmp
= readl(mmio
+ GPIO_PORT_CTL
);
3106 tmp
|= (1 << 5) | (1 << 6);
3107 writel(tmp
, mmio
+ GPIO_PORT_CTL
);
3111 * mv6_reset_hc - Perform the 6xxx global soft reset
3112 * @mmio: base address of the HBA
3114 * This routine only applies to 6xxx parts.
3117 * Inherited from caller.
3119 static int mv6_reset_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
3122 void __iomem
*reg
= mmio
+ PCI_MAIN_CMD_STS
;
3126 /* Following procedure defined in PCI "main command and status
3130 writel(t
| STOP_PCI_MASTER
, reg
);
3132 for (i
= 0; i
< 1000; i
++) {
3135 if (PCI_MASTER_EMPTY
& t
)
3138 if (!(PCI_MASTER_EMPTY
& t
)) {
3139 printk(KERN_ERR DRV_NAME
": PCI master won't flush\n");
3147 writel(t
| GLOB_SFT_RST
, reg
);
3150 } while (!(GLOB_SFT_RST
& t
) && (i
-- > 0));
3152 if (!(GLOB_SFT_RST
& t
)) {
3153 printk(KERN_ERR DRV_NAME
": can't set global reset\n");
3158 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
3161 writel(t
& ~(GLOB_SFT_RST
| STOP_PCI_MASTER
), reg
);
3164 } while ((GLOB_SFT_RST
& t
) && (i
-- > 0));
3166 if (GLOB_SFT_RST
& t
) {
3167 printk(KERN_ERR DRV_NAME
": can't clear global reset\n");
3174 static void mv6_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
3177 void __iomem
*port_mmio
;
3180 tmp
= readl(mmio
+ RESET_CFG
);
3181 if ((tmp
& (1 << 0)) == 0) {
3182 hpriv
->signal
[idx
].amps
= 0x7 << 8;
3183 hpriv
->signal
[idx
].pre
= 0x1 << 5;
3187 port_mmio
= mv_port_base(mmio
, idx
);
3188 tmp
= readl(port_mmio
+ PHY_MODE2
);
3190 hpriv
->signal
[idx
].amps
= tmp
& 0x700; /* bits 10:8 */
3191 hpriv
->signal
[idx
].pre
= tmp
& 0xe0; /* bits 7:5 */
3194 static void mv6_enable_leds(struct mv_host_priv
*hpriv
, void __iomem
*mmio
)
3196 writel(0x00000060, mmio
+ GPIO_PORT_CTL
);
3199 static void mv6_phy_errata(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
3202 void __iomem
*port_mmio
= mv_port_base(mmio
, port
);
3204 u32 hp_flags
= hpriv
->hp_flags
;
3206 hp_flags
& (MV_HP_ERRATA_60X1B2
| MV_HP_ERRATA_60X1C0
);
3208 hp_flags
& (MV_HP_ERRATA_60X1B2
| MV_HP_ERRATA_60X1C0
);
3211 if (fix_phy_mode2
) {
3212 m2
= readl(port_mmio
+ PHY_MODE2
);
3215 writel(m2
, port_mmio
+ PHY_MODE2
);
3219 m2
= readl(port_mmio
+ PHY_MODE2
);
3220 m2
&= ~((1 << 16) | (1 << 31));
3221 writel(m2
, port_mmio
+ PHY_MODE2
);
3227 * Gen-II/IIe PHY_MODE3 errata RM#2:
3228 * Achieves better receiver noise performance than the h/w default:
3230 m3
= readl(port_mmio
+ PHY_MODE3
);
3231 m3
= (m3
& 0x1f) | (0x5555601 << 5);
3233 /* Guideline 88F5182 (GL# SATA-S11) */
3237 if (fix_phy_mode4
) {
3238 u32 m4
= readl(port_mmio
+ PHY_MODE4
);
3240 * Enforce reserved-bit restrictions on GenIIe devices only.
3241 * For earlier chipsets, force only the internal config field
3242 * (workaround for errata FEr SATA#10 part 1).
3244 if (IS_GEN_IIE(hpriv
))
3245 m4
= (m4
& ~PHY_MODE4_RSVD_ZEROS
) | PHY_MODE4_RSVD_ONES
;
3247 m4
= (m4
& ~PHY_MODE4_CFG_MASK
) | PHY_MODE4_CFG_VALUE
;
3248 writel(m4
, port_mmio
+ PHY_MODE4
);
3251 * Workaround for 60x1-B2 errata SATA#13:
3252 * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3,
3253 * so we must always rewrite PHY_MODE3 after PHY_MODE4.
3254 * Or ensure we use writelfl() when writing PHY_MODE4.
3256 writel(m3
, port_mmio
+ PHY_MODE3
);
3258 /* Revert values of pre-emphasis and signal amps to the saved ones */
3259 m2
= readl(port_mmio
+ PHY_MODE2
);
3261 m2
&= ~MV_M2_PREAMP_MASK
;
3262 m2
|= hpriv
->signal
[port
].amps
;
3263 m2
|= hpriv
->signal
[port
].pre
;
3266 /* according to mvSata 3.6.1, some IIE values are fixed */
3267 if (IS_GEN_IIE(hpriv
)) {
3272 writel(m2
, port_mmio
+ PHY_MODE2
);
3275 /* TODO: use the generic LED interface to configure the SATA Presence */
3276 /* & Acitivy LEDs on the board */
3277 static void mv_soc_enable_leds(struct mv_host_priv
*hpriv
,
3283 static void mv_soc_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
3286 void __iomem
*port_mmio
;
3289 port_mmio
= mv_port_base(mmio
, idx
);
3290 tmp
= readl(port_mmio
+ PHY_MODE2
);
3292 hpriv
->signal
[idx
].amps
= tmp
& 0x700; /* bits 10:8 */
3293 hpriv
->signal
[idx
].pre
= tmp
& 0xe0; /* bits 7:5 */
3297 #define ZERO(reg) writel(0, port_mmio + (reg))
3298 static void mv_soc_reset_hc_port(struct mv_host_priv
*hpriv
,
3299 void __iomem
*mmio
, unsigned int port
)
3301 void __iomem
*port_mmio
= mv_port_base(mmio
, port
);
3303 mv_reset_channel(hpriv
, mmio
, port
);
3305 ZERO(0x028); /* command */
3306 writel(0x101f, port_mmio
+ EDMA_CFG
);
3307 ZERO(0x004); /* timer */
3308 ZERO(0x008); /* irq err cause */
3309 ZERO(0x00c); /* irq err mask */
3310 ZERO(0x010); /* rq bah */
3311 ZERO(0x014); /* rq inp */
3312 ZERO(0x018); /* rq outp */
3313 ZERO(0x01c); /* respq bah */
3314 ZERO(0x024); /* respq outp */
3315 ZERO(0x020); /* respq inp */
3316 ZERO(0x02c); /* test control */
3317 writel(0xbc, port_mmio
+ EDMA_IORDY_TMOUT
);
3322 #define ZERO(reg) writel(0, hc_mmio + (reg))
3323 static void mv_soc_reset_one_hc(struct mv_host_priv
*hpriv
,
3326 void __iomem
*hc_mmio
= mv_hc_base(mmio
, 0);
3336 static int mv_soc_reset_hc(struct mv_host_priv
*hpriv
,
3337 void __iomem
*mmio
, unsigned int n_hc
)
3341 for (port
= 0; port
< hpriv
->n_ports
; port
++)
3342 mv_soc_reset_hc_port(hpriv
, mmio
, port
);
3344 mv_soc_reset_one_hc(hpriv
, mmio
);
3349 static void mv_soc_reset_flash(struct mv_host_priv
*hpriv
,
3355 static void mv_soc_reset_bus(struct ata_host
*host
, void __iomem
*mmio
)
3360 static void mv_setup_ifcfg(void __iomem
*port_mmio
, int want_gen2i
)
3362 u32 ifcfg
= readl(port_mmio
+ SATA_IFCFG
);
3364 ifcfg
= (ifcfg
& 0xf7f) | 0x9b1000; /* from chip spec */
3366 ifcfg
|= (1 << 7); /* enable gen2i speed */
3367 writelfl(ifcfg
, port_mmio
+ SATA_IFCFG
);
3370 static void mv_reset_channel(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
3371 unsigned int port_no
)
3373 void __iomem
*port_mmio
= mv_port_base(mmio
, port_no
);
3376 * The datasheet warns against setting EDMA_RESET when EDMA is active
3377 * (but doesn't say what the problem might be). So we first try
3378 * to disable the EDMA engine before doing the EDMA_RESET operation.
3380 mv_stop_edma_engine(port_mmio
);
3381 writelfl(EDMA_RESET
, port_mmio
+ EDMA_CMD
);
3383 if (!IS_GEN_I(hpriv
)) {
3384 /* Enable 3.0gb/s link speed: this survives EDMA_RESET */
3385 mv_setup_ifcfg(port_mmio
, 1);
3388 * Strobing EDMA_RESET here causes a hard reset of the SATA transport,
3389 * link, and physical layers. It resets all SATA interface registers
3390 * (except for SATA_IFCFG), and issues a COMRESET to the dev.
3392 writelfl(EDMA_RESET
, port_mmio
+ EDMA_CMD
);
3393 udelay(25); /* allow reset propagation */
3394 writelfl(0, port_mmio
+ EDMA_CMD
);
3396 hpriv
->ops
->phy_errata(hpriv
, mmio
, port_no
);
3398 if (IS_GEN_I(hpriv
))
3402 static void mv_pmp_select(struct ata_port
*ap
, int pmp
)
3404 if (sata_pmp_supported(ap
)) {
3405 void __iomem
*port_mmio
= mv_ap_base(ap
);
3406 u32 reg
= readl(port_mmio
+ SATA_IFCTL
);
3407 int old
= reg
& 0xf;
3410 reg
= (reg
& ~0xf) | pmp
;
3411 writelfl(reg
, port_mmio
+ SATA_IFCTL
);
3416 static int mv_pmp_hardreset(struct ata_link
*link
, unsigned int *class,
3417 unsigned long deadline
)
3419 mv_pmp_select(link
->ap
, sata_srst_pmp(link
));
3420 return sata_std_hardreset(link
, class, deadline
);
3423 static int mv_softreset(struct ata_link
*link
, unsigned int *class,
3424 unsigned long deadline
)
3426 mv_pmp_select(link
->ap
, sata_srst_pmp(link
));
3427 return ata_sff_softreset(link
, class, deadline
);
3430 static int mv_hardreset(struct ata_link
*link
, unsigned int *class,
3431 unsigned long deadline
)
3433 struct ata_port
*ap
= link
->ap
;
3434 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
3435 struct mv_port_priv
*pp
= ap
->private_data
;
3436 void __iomem
*mmio
= hpriv
->base
;
3437 int rc
, attempts
= 0, extra
= 0;
3441 mv_reset_channel(hpriv
, mmio
, ap
->port_no
);
3442 pp
->pp_flags
&= ~MV_PP_FLAG_EDMA_EN
;
3444 ~(MV_PP_FLAG_FBS_EN
| MV_PP_FLAG_NCQ_EN
| MV_PP_FLAG_FAKE_ATA_BUSY
);
3446 /* Workaround for errata FEr SATA#10 (part 2) */
3448 const unsigned long *timing
=
3449 sata_ehc_deb_timing(&link
->eh_context
);
3451 rc
= sata_link_hardreset(link
, timing
, deadline
+ extra
,
3453 rc
= online
? -EAGAIN
: rc
;
3456 sata_scr_read(link
, SCR_STATUS
, &sstatus
);
3457 if (!IS_GEN_I(hpriv
) && ++attempts
>= 5 && sstatus
== 0x121) {
3458 /* Force 1.5gb/s link speed and try again */
3459 mv_setup_ifcfg(mv_ap_base(ap
), 0);
3460 if (time_after(jiffies
+ HZ
, deadline
))
3461 extra
= HZ
; /* only extend it once, max */
3463 } while (sstatus
!= 0x0 && sstatus
!= 0x113 && sstatus
!= 0x123);
3464 mv_save_cached_regs(ap
);
3465 mv_edma_cfg(ap
, 0, 0);
3470 static void mv_eh_freeze(struct ata_port
*ap
)
3473 mv_enable_port_irqs(ap
, 0);
3476 static void mv_eh_thaw(struct ata_port
*ap
)
3478 struct mv_host_priv
*hpriv
= ap
->host
->private_data
;
3479 unsigned int port
= ap
->port_no
;
3480 unsigned int hardport
= mv_hardport_from_port(port
);
3481 void __iomem
*hc_mmio
= mv_hc_base_from_port(hpriv
->base
, port
);
3482 void __iomem
*port_mmio
= mv_ap_base(ap
);
3485 /* clear EDMA errors on this port */
3486 writel(0, port_mmio
+ EDMA_ERR_IRQ_CAUSE
);
3488 /* clear pending irq events */
3489 hc_irq_cause
= ~((DEV_IRQ
| DMA_IRQ
) << hardport
);
3490 writelfl(hc_irq_cause
, hc_mmio
+ HC_IRQ_CAUSE
);
3492 mv_enable_port_irqs(ap
, ERR_IRQ
);
3496 * mv_port_init - Perform some early initialization on a single port.
3497 * @port: libata data structure storing shadow register addresses
3498 * @port_mmio: base address of the port
3500 * Initialize shadow register mmio addresses, clear outstanding
3501 * interrupts on the port, and unmask interrupts for the future
3502 * start of the port.
3505 * Inherited from caller.
3507 static void mv_port_init(struct ata_ioports
*port
, void __iomem
*port_mmio
)
3509 void __iomem
*serr
, *shd_base
= port_mmio
+ SHD_BLK
;
3511 /* PIO related setup
3513 port
->data_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_DATA
);
3515 port
->feature_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_ERR
);
3516 port
->nsect_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_NSECT
);
3517 port
->lbal_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_LBAL
);
3518 port
->lbam_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_LBAM
);
3519 port
->lbah_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_LBAH
);
3520 port
->device_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_DEVICE
);
3522 port
->command_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_STATUS
);
3523 /* special case: control/altstatus doesn't have ATA_REG_ address */
3524 port
->altstatus_addr
= port
->ctl_addr
= shd_base
+ SHD_CTL_AST
;
3527 port
->cmd_addr
= port
->bmdma_addr
= port
->scr_addr
= NULL
;
3529 /* Clear any currently outstanding port interrupt conditions */
3530 serr
= port_mmio
+ mv_scr_offset(SCR_ERROR
);
3531 writelfl(readl(serr
), serr
);
3532 writelfl(0, port_mmio
+ EDMA_ERR_IRQ_CAUSE
);
3534 /* unmask all non-transient EDMA error interrupts */
3535 writelfl(~EDMA_ERR_IRQ_TRANSIENT
, port_mmio
+ EDMA_ERR_IRQ_MASK
);
3537 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
3538 readl(port_mmio
+ EDMA_CFG
),
3539 readl(port_mmio
+ EDMA_ERR_IRQ_CAUSE
),
3540 readl(port_mmio
+ EDMA_ERR_IRQ_MASK
));
3543 static unsigned int mv_in_pcix_mode(struct ata_host
*host
)
3545 struct mv_host_priv
*hpriv
= host
->private_data
;
3546 void __iomem
*mmio
= hpriv
->base
;
3549 if (IS_SOC(hpriv
) || !IS_PCIE(hpriv
))
3550 return 0; /* not PCI-X capable */
3551 reg
= readl(mmio
+ MV_PCI_MODE
);
3552 if ((reg
& MV_PCI_MODE_MASK
) == 0)
3553 return 0; /* conventional PCI mode */
3554 return 1; /* chip is in PCI-X mode */
3557 static int mv_pci_cut_through_okay(struct ata_host
*host
)
3559 struct mv_host_priv
*hpriv
= host
->private_data
;
3560 void __iomem
*mmio
= hpriv
->base
;
3563 if (!mv_in_pcix_mode(host
)) {
3564 reg
= readl(mmio
+ MV_PCI_COMMAND
);
3565 if (reg
& MV_PCI_COMMAND_MRDTRIG
)
3566 return 0; /* not okay */
3568 return 1; /* okay */
3571 static void mv_60x1b2_errata_pci7(struct ata_host
*host
)
3573 struct mv_host_priv
*hpriv
= host
->private_data
;
3574 void __iomem
*mmio
= hpriv
->base
;
3576 /* workaround for 60x1-B2 errata PCI#7 */
3577 if (mv_in_pcix_mode(host
)) {
3578 u32 reg
= readl(mmio
+ MV_PCI_COMMAND
);
3579 writelfl(reg
& ~MV_PCI_COMMAND_MWRCOM
, mmio
+ MV_PCI_COMMAND
);
3583 static int mv_chip_id(struct ata_host
*host
, unsigned int board_idx
)
3585 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
3586 struct mv_host_priv
*hpriv
= host
->private_data
;
3587 u32 hp_flags
= hpriv
->hp_flags
;
3589 switch (board_idx
) {
3591 hpriv
->ops
= &mv5xxx_ops
;
3592 hp_flags
|= MV_HP_GEN_I
;
3594 switch (pdev
->revision
) {
3596 hp_flags
|= MV_HP_ERRATA_50XXB0
;
3599 hp_flags
|= MV_HP_ERRATA_50XXB2
;
3602 dev_printk(KERN_WARNING
, &pdev
->dev
,
3603 "Applying 50XXB2 workarounds to unknown rev\n");
3604 hp_flags
|= MV_HP_ERRATA_50XXB2
;
3611 hpriv
->ops
= &mv5xxx_ops
;
3612 hp_flags
|= MV_HP_GEN_I
;
3614 switch (pdev
->revision
) {
3616 hp_flags
|= MV_HP_ERRATA_50XXB0
;
3619 hp_flags
|= MV_HP_ERRATA_50XXB2
;
3622 dev_printk(KERN_WARNING
, &pdev
->dev
,
3623 "Applying B2 workarounds to unknown rev\n");
3624 hp_flags
|= MV_HP_ERRATA_50XXB2
;
3631 hpriv
->ops
= &mv6xxx_ops
;
3632 hp_flags
|= MV_HP_GEN_II
;
3634 switch (pdev
->revision
) {
3636 mv_60x1b2_errata_pci7(host
);
3637 hp_flags
|= MV_HP_ERRATA_60X1B2
;
3640 hp_flags
|= MV_HP_ERRATA_60X1C0
;
3643 dev_printk(KERN_WARNING
, &pdev
->dev
,
3644 "Applying B2 workarounds to unknown rev\n");
3645 hp_flags
|= MV_HP_ERRATA_60X1B2
;
3651 hp_flags
|= MV_HP_PCIE
| MV_HP_CUT_THROUGH
;
3652 if (pdev
->vendor
== PCI_VENDOR_ID_TTI
&&
3653 (pdev
->device
== 0x2300 || pdev
->device
== 0x2310))
3656 * Highpoint RocketRAID PCIe 23xx series cards:
3658 * Unconfigured drives are treated as "Legacy"
3659 * by the BIOS, and it overwrites sector 8 with
3660 * a "Lgcy" metadata block prior to Linux boot.
3662 * Configured drives (RAID or JBOD) leave sector 8
3663 * alone, but instead overwrite a high numbered
3664 * sector for the RAID metadata. This sector can
3665 * be determined exactly, by truncating the physical
3666 * drive capacity to a nice even GB value.
3668 * RAID metadata is at: (dev->n_sectors & ~0xfffff)
3670 * Warn the user, lest they think we're just buggy.
3672 printk(KERN_WARNING DRV_NAME
": Highpoint RocketRAID"
3673 " BIOS CORRUPTS DATA on all attached drives,"
3674 " regardless of if/how they are configured."
3676 printk(KERN_WARNING DRV_NAME
": For data safety, do not"
3677 " use sectors 8-9 on \"Legacy\" drives,"
3678 " and avoid the final two gigabytes on"
3679 " all RocketRAID BIOS initialized drives.\n");
3683 hpriv
->ops
= &mv6xxx_ops
;
3684 hp_flags
|= MV_HP_GEN_IIE
;
3685 if (board_idx
== chip_6042
&& mv_pci_cut_through_okay(host
))
3686 hp_flags
|= MV_HP_CUT_THROUGH
;
3688 switch (pdev
->revision
) {
3689 case 0x2: /* Rev.B0: the first/only public release */
3690 hp_flags
|= MV_HP_ERRATA_60X1C0
;
3693 dev_printk(KERN_WARNING
, &pdev
->dev
,
3694 "Applying 60X1C0 workarounds to unknown rev\n");
3695 hp_flags
|= MV_HP_ERRATA_60X1C0
;
3700 hpriv
->ops
= &mv_soc_ops
;
3701 hp_flags
|= MV_HP_FLAG_SOC
| MV_HP_GEN_IIE
|
3702 MV_HP_ERRATA_60X1C0
;
3706 dev_printk(KERN_ERR
, host
->dev
,
3707 "BUG: invalid board index %u\n", board_idx
);
3711 hpriv
->hp_flags
= hp_flags
;
3712 if (hp_flags
& MV_HP_PCIE
) {
3713 hpriv
->irq_cause_offset
= PCIE_IRQ_CAUSE
;
3714 hpriv
->irq_mask_offset
= PCIE_IRQ_MASK
;
3715 hpriv
->unmask_all_irqs
= PCIE_UNMASK_ALL_IRQS
;
3717 hpriv
->irq_cause_offset
= PCI_IRQ_CAUSE
;
3718 hpriv
->irq_mask_offset
= PCI_IRQ_MASK
;
3719 hpriv
->unmask_all_irqs
= PCI_UNMASK_ALL_IRQS
;
3726 * mv_init_host - Perform some early initialization of the host.
3727 * @host: ATA host to initialize
3728 * @board_idx: controller index
3730 * If possible, do an early global reset of the host. Then do
3731 * our port init and clear/unmask all/relevant host interrupts.
3734 * Inherited from caller.
3736 static int mv_init_host(struct ata_host
*host
, unsigned int board_idx
)
3738 int rc
= 0, n_hc
, port
, hc
;
3739 struct mv_host_priv
*hpriv
= host
->private_data
;
3740 void __iomem
*mmio
= hpriv
->base
;
3742 rc
= mv_chip_id(host
, board_idx
);
3746 if (IS_SOC(hpriv
)) {
3747 hpriv
->main_irq_cause_addr
= mmio
+ SOC_HC_MAIN_IRQ_CAUSE
;
3748 hpriv
->main_irq_mask_addr
= mmio
+ SOC_HC_MAIN_IRQ_MASK
;
3750 hpriv
->main_irq_cause_addr
= mmio
+ PCI_HC_MAIN_IRQ_CAUSE
;
3751 hpriv
->main_irq_mask_addr
= mmio
+ PCI_HC_MAIN_IRQ_MASK
;
3754 /* initialize shadow irq mask with register's value */
3755 hpriv
->main_irq_mask
= readl(hpriv
->main_irq_mask_addr
);
3757 /* global interrupt mask: 0 == mask everything */
3758 mv_set_main_irq_mask(host
, ~0, 0);
3760 n_hc
= mv_get_hc_count(host
->ports
[0]->flags
);
3762 for (port
= 0; port
< host
->n_ports
; port
++)
3763 hpriv
->ops
->read_preamp(hpriv
, port
, mmio
);
3765 rc
= hpriv
->ops
->reset_hc(hpriv
, mmio
, n_hc
);
3769 hpriv
->ops
->reset_flash(hpriv
, mmio
);
3770 hpriv
->ops
->reset_bus(host
, mmio
);
3771 hpriv
->ops
->enable_leds(hpriv
, mmio
);
3773 for (port
= 0; port
< host
->n_ports
; port
++) {
3774 struct ata_port
*ap
= host
->ports
[port
];
3775 void __iomem
*port_mmio
= mv_port_base(mmio
, port
);
3777 mv_port_init(&ap
->ioaddr
, port_mmio
);
3780 if (!IS_SOC(hpriv
)) {
3781 unsigned int offset
= port_mmio
- mmio
;
3782 ata_port_pbar_desc(ap
, MV_PRIMARY_BAR
, -1, "mmio");
3783 ata_port_pbar_desc(ap
, MV_PRIMARY_BAR
, offset
, "port");
3788 for (hc
= 0; hc
< n_hc
; hc
++) {
3789 void __iomem
*hc_mmio
= mv_hc_base(mmio
, hc
);
3791 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
3792 "(before clear)=0x%08x\n", hc
,
3793 readl(hc_mmio
+ HC_CFG
),
3794 readl(hc_mmio
+ HC_IRQ_CAUSE
));
3796 /* Clear any currently outstanding hc interrupt conditions */
3797 writelfl(0, hc_mmio
+ HC_IRQ_CAUSE
);
3800 if (!IS_SOC(hpriv
)) {
3801 /* Clear any currently outstanding host interrupt conditions */
3802 writelfl(0, mmio
+ hpriv
->irq_cause_offset
);
3804 /* and unmask interrupt generation for host regs */
3805 writelfl(hpriv
->unmask_all_irqs
, mmio
+ hpriv
->irq_mask_offset
);
3809 * enable only global host interrupts for now.
3810 * The per-port interrupts get done later as ports are set up.
3812 mv_set_main_irq_mask(host
, 0, PCI_ERR
);
3813 mv_set_irq_coalescing(host
, irq_coalescing_io_count
,
3814 irq_coalescing_usecs
);
3819 static int mv_create_dma_pools(struct mv_host_priv
*hpriv
, struct device
*dev
)
3821 hpriv
->crqb_pool
= dmam_pool_create("crqb_q", dev
, MV_CRQB_Q_SZ
,
3823 if (!hpriv
->crqb_pool
)
3826 hpriv
->crpb_pool
= dmam_pool_create("crpb_q", dev
, MV_CRPB_Q_SZ
,
3828 if (!hpriv
->crpb_pool
)
3831 hpriv
->sg_tbl_pool
= dmam_pool_create("sg_tbl", dev
, MV_SG_TBL_SZ
,
3833 if (!hpriv
->sg_tbl_pool
)
3839 static void mv_conf_mbus_windows(struct mv_host_priv
*hpriv
,
3840 struct mbus_dram_target_info
*dram
)
3844 for (i
= 0; i
< 4; i
++) {
3845 writel(0, hpriv
->base
+ WINDOW_CTRL(i
));
3846 writel(0, hpriv
->base
+ WINDOW_BASE(i
));
3849 for (i
= 0; i
< dram
->num_cs
; i
++) {
3850 struct mbus_dram_window
*cs
= dram
->cs
+ i
;
3852 writel(((cs
->size
- 1) & 0xffff0000) |
3853 (cs
->mbus_attr
<< 8) |
3854 (dram
->mbus_dram_target_id
<< 4) | 1,
3855 hpriv
->base
+ WINDOW_CTRL(i
));
3856 writel(cs
->base
, hpriv
->base
+ WINDOW_BASE(i
));
3861 * mv_platform_probe - handle a positive probe of an soc Marvell
3863 * @pdev: platform device found
3866 * Inherited from caller.
3868 static int mv_platform_probe(struct platform_device
*pdev
)
3870 static int printed_version
;
3871 const struct mv_sata_platform_data
*mv_platform_data
;
3872 const struct ata_port_info
*ppi
[] =
3873 { &mv_port_info
[chip_soc
], NULL
};
3874 struct ata_host
*host
;
3875 struct mv_host_priv
*hpriv
;
3876 struct resource
*res
;
3879 if (!printed_version
++)
3880 dev_printk(KERN_INFO
, &pdev
->dev
, "version " DRV_VERSION
"\n");
3883 * Simple resource validation ..
3885 if (unlikely(pdev
->num_resources
!= 2)) {
3886 dev_err(&pdev
->dev
, "invalid number of resources\n");
3891 * Get the register base first
3893 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
3898 mv_platform_data
= pdev
->dev
.platform_data
;
3899 n_ports
= mv_platform_data
->n_ports
;
3901 host
= ata_host_alloc_pinfo(&pdev
->dev
, ppi
, n_ports
);
3902 hpriv
= devm_kzalloc(&pdev
->dev
, sizeof(*hpriv
), GFP_KERNEL
);
3904 if (!host
|| !hpriv
)
3906 host
->private_data
= hpriv
;
3907 hpriv
->n_ports
= n_ports
;
3910 hpriv
->base
= devm_ioremap(&pdev
->dev
, res
->start
,
3911 res
->end
- res
->start
+ 1);
3912 hpriv
->base
-= SATAHC0_REG_BASE
;
3915 * (Re-)program MBUS remapping windows if we are asked to.
3917 if (mv_platform_data
->dram
!= NULL
)
3918 mv_conf_mbus_windows(hpriv
, mv_platform_data
->dram
);
3920 rc
= mv_create_dma_pools(hpriv
, &pdev
->dev
);
3924 /* initialize adapter */
3925 rc
= mv_init_host(host
, chip_soc
);
3929 dev_printk(KERN_INFO
, &pdev
->dev
,
3930 "slots %u ports %d\n", (unsigned)MV_MAX_Q_DEPTH
,
3933 return ata_host_activate(host
, platform_get_irq(pdev
, 0), mv_interrupt
,
3934 IRQF_SHARED
, &mv6_sht
);
3939 * mv_platform_remove - unplug a platform interface
3940 * @pdev: platform device
3942 * A platform bus SATA device has been unplugged. Perform the needed
3943 * cleanup. Also called on module unload for any active devices.
3945 static int __devexit
mv_platform_remove(struct platform_device
*pdev
)
3947 struct device
*dev
= &pdev
->dev
;
3948 struct ata_host
*host
= dev_get_drvdata(dev
);
3950 ata_host_detach(host
);
3954 static struct platform_driver mv_platform_driver
= {
3955 .probe
= mv_platform_probe
,
3956 .remove
= __devexit_p(mv_platform_remove
),
3959 .owner
= THIS_MODULE
,
3965 static int mv_pci_init_one(struct pci_dev
*pdev
,
3966 const struct pci_device_id
*ent
);
3969 static struct pci_driver mv_pci_driver
= {
3971 .id_table
= mv_pci_tbl
,
3972 .probe
= mv_pci_init_one
,
3973 .remove
= ata_pci_remove_one
,
3976 /* move to PCI layer or libata core? */
3977 static int pci_go_64(struct pci_dev
*pdev
)
3981 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64))) {
3982 rc
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64));
3984 rc
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3986 dev_printk(KERN_ERR
, &pdev
->dev
,
3987 "64-bit DMA enable failed\n");
3992 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3994 dev_printk(KERN_ERR
, &pdev
->dev
,
3995 "32-bit DMA enable failed\n");
3998 rc
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4000 dev_printk(KERN_ERR
, &pdev
->dev
,
4001 "32-bit consistent DMA enable failed\n");
4010 * mv_print_info - Dump key info to kernel log for perusal.
4011 * @host: ATA host to print info about
4013 * FIXME: complete this.
4016 * Inherited from caller.
4018 static void mv_print_info(struct ata_host
*host
)
4020 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
4021 struct mv_host_priv
*hpriv
= host
->private_data
;
4023 const char *scc_s
, *gen
;
4025 /* Use this to determine the HW stepping of the chip so we know
4026 * what errata to workaround
4028 pci_read_config_byte(pdev
, PCI_CLASS_DEVICE
, &scc
);
4031 else if (scc
== 0x01)
4036 if (IS_GEN_I(hpriv
))
4038 else if (IS_GEN_II(hpriv
))
4040 else if (IS_GEN_IIE(hpriv
))
4045 dev_printk(KERN_INFO
, &pdev
->dev
,
4046 "Gen-%s %u slots %u ports %s mode IRQ via %s\n",
4047 gen
, (unsigned)MV_MAX_Q_DEPTH
, host
->n_ports
,
4048 scc_s
, (MV_HP_FLAG_MSI
& hpriv
->hp_flags
) ? "MSI" : "INTx");
4052 * mv_pci_init_one - handle a positive probe of a PCI Marvell host
4053 * @pdev: PCI device found
4054 * @ent: PCI device ID entry for the matched host
4057 * Inherited from caller.
4059 static int mv_pci_init_one(struct pci_dev
*pdev
,
4060 const struct pci_device_id
*ent
)
4062 static int printed_version
;
4063 unsigned int board_idx
= (unsigned int)ent
->driver_data
;
4064 const struct ata_port_info
*ppi
[] = { &mv_port_info
[board_idx
], NULL
};
4065 struct ata_host
*host
;
4066 struct mv_host_priv
*hpriv
;
4069 if (!printed_version
++)
4070 dev_printk(KERN_INFO
, &pdev
->dev
, "version " DRV_VERSION
"\n");
4073 n_ports
= mv_get_hc_count(ppi
[0]->flags
) * MV_PORTS_PER_HC
;
4075 host
= ata_host_alloc_pinfo(&pdev
->dev
, ppi
, n_ports
);
4076 hpriv
= devm_kzalloc(&pdev
->dev
, sizeof(*hpriv
), GFP_KERNEL
);
4077 if (!host
|| !hpriv
)
4079 host
->private_data
= hpriv
;
4080 hpriv
->n_ports
= n_ports
;
4082 /* acquire resources */
4083 rc
= pcim_enable_device(pdev
);
4087 rc
= pcim_iomap_regions(pdev
, 1 << MV_PRIMARY_BAR
, DRV_NAME
);
4089 pcim_pin_device(pdev
);
4092 host
->iomap
= pcim_iomap_table(pdev
);
4093 hpriv
->base
= host
->iomap
[MV_PRIMARY_BAR
];
4095 rc
= pci_go_64(pdev
);
4099 rc
= mv_create_dma_pools(hpriv
, &pdev
->dev
);
4103 /* initialize adapter */
4104 rc
= mv_init_host(host
, board_idx
);
4108 /* Enable message-switched interrupts, if requested */
4109 if (msi
&& pci_enable_msi(pdev
) == 0)
4110 hpriv
->hp_flags
|= MV_HP_FLAG_MSI
;
4112 mv_dump_pci_cfg(pdev
, 0x68);
4113 mv_print_info(host
);
4115 pci_set_master(pdev
);
4116 pci_try_set_mwi(pdev
);
4117 return ata_host_activate(host
, pdev
->irq
, mv_interrupt
, IRQF_SHARED
,
4118 IS_GEN_I(hpriv
) ? &mv5_sht
: &mv6_sht
);
4122 static int mv_platform_probe(struct platform_device
*pdev
);
4123 static int __devexit
mv_platform_remove(struct platform_device
*pdev
);
4125 static int __init
mv_init(void)
4129 rc
= pci_register_driver(&mv_pci_driver
);
4133 rc
= platform_driver_register(&mv_platform_driver
);
4137 pci_unregister_driver(&mv_pci_driver
);
4142 static void __exit
mv_exit(void)
4145 pci_unregister_driver(&mv_pci_driver
);
4147 platform_driver_unregister(&mv_platform_driver
);
4150 MODULE_AUTHOR("Brett Russ");
4151 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
4152 MODULE_LICENSE("GPL");
4153 MODULE_DEVICE_TABLE(pci
, mv_pci_tbl
);
4154 MODULE_VERSION(DRV_VERSION
);
4155 MODULE_ALIAS("platform:" DRV_NAME
);
4157 module_init(mv_init
);
4158 module_exit(mv_exit
);