2 * sata_mv.c - Marvell SATA support
4 * Copyright 2005: EMC Corporation, all rights reserved.
5 * Copyright 2005 Red Hat, Inc. All rights reserved.
7 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/pci.h>
27 #include <linux/init.h>
28 #include <linux/blkdev.h>
29 #include <linux/delay.h>
30 #include <linux/interrupt.h>
31 #include <linux/sched.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_cmnd.h>
36 #include <linux/libata.h>
39 #define DRV_NAME "sata_mv"
40 #define DRV_VERSION "0.5"
43 /* BAR's are enumerated in terms of pci_resource_start() terms */
44 MV_PRIMARY_BAR
= 0, /* offset 0x10: memory space */
45 MV_IO_BAR
= 2, /* offset 0x18: IO space */
46 MV_MISC_BAR
= 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
48 MV_MAJOR_REG_AREA_SZ
= 0x10000, /* 64KB */
49 MV_MINOR_REG_AREA_SZ
= 0x2000, /* 8KB */
52 MV_IRQ_COAL_REG_BASE
= 0x18000, /* 6xxx part only */
53 MV_SATAHC0_REG_BASE
= 0x20000,
54 MV_FLASH_CTL
= 0x1046c,
55 MV_GPIO_PORT_CTL
= 0x104f0,
56 MV_RESET_CFG
= 0x180d8,
58 MV_PCI_REG_SZ
= MV_MAJOR_REG_AREA_SZ
,
59 MV_SATAHC_REG_SZ
= MV_MAJOR_REG_AREA_SZ
,
60 MV_SATAHC_ARBTR_REG_SZ
= MV_MINOR_REG_AREA_SZ
, /* arbiter */
61 MV_PORT_REG_SZ
= MV_MINOR_REG_AREA_SZ
,
63 MV_USE_Q_DEPTH
= ATA_DEF_QUEUE
,
66 MV_MAX_Q_DEPTH_MASK
= MV_MAX_Q_DEPTH
- 1,
68 /* CRQB needs alignment on a 1KB boundary. Size == 1KB
69 * CRPB needs alignment on a 256B boundary. Size == 256B
70 * SG count of 176 leads to MV_PORT_PRIV_DMA_SZ == 4KB
71 * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
73 MV_CRQB_Q_SZ
= (32 * MV_MAX_Q_DEPTH
),
74 MV_CRPB_Q_SZ
= (8 * MV_MAX_Q_DEPTH
),
76 MV_SG_TBL_SZ
= (16 * MV_MAX_SG_CT
),
77 MV_PORT_PRIV_DMA_SZ
= (MV_CRQB_Q_SZ
+ MV_CRPB_Q_SZ
+ MV_SG_TBL_SZ
),
80 /* == (port / MV_PORTS_PER_HC) to determine HC from 0-7 port */
82 /* == (port % MV_PORTS_PER_HC) to determine hard port from 0-7 port */
86 MV_FLAG_DUAL_HC
= (1 << 30), /* two SATA Host Controllers */
87 MV_FLAG_IRQ_COALESCE
= (1 << 29), /* IRQ coalescing capability */
88 MV_COMMON_FLAGS
= (ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
|
89 ATA_FLAG_SATA_RESET
| ATA_FLAG_MMIO
|
91 MV_6XXX_FLAGS
= MV_FLAG_IRQ_COALESCE
,
93 CRQB_FLAG_READ
= (1 << 0),
95 CRQB_CMD_ADDR_SHIFT
= 8,
96 CRQB_CMD_CS
= (0x2 << 11),
97 CRQB_CMD_LAST
= (1 << 15),
99 CRPB_FLAG_STATUS_SHIFT
= 8,
101 EPRD_FLAG_END_OF_TBL
= (1 << 31),
103 /* PCI interface registers */
105 PCI_COMMAND_OFS
= 0xc00,
107 PCI_MAIN_CMD_STS_OFS
= 0xd30,
108 STOP_PCI_MASTER
= (1 << 2),
109 PCI_MASTER_EMPTY
= (1 << 3),
110 GLOB_SFT_RST
= (1 << 4),
113 MV_PCI_EXP_ROM_BAR_CTL
= 0xd2c,
114 MV_PCI_DISC_TIMER
= 0xd04,
115 MV_PCI_MSI_TRIGGER
= 0xc38,
116 MV_PCI_SERR_MASK
= 0xc28,
117 MV_PCI_XBAR_TMOUT
= 0x1d04,
118 MV_PCI_ERR_LOW_ADDRESS
= 0x1d40,
119 MV_PCI_ERR_HIGH_ADDRESS
= 0x1d44,
120 MV_PCI_ERR_ATTRIBUTE
= 0x1d48,
121 MV_PCI_ERR_COMMAND
= 0x1d50,
123 PCI_IRQ_CAUSE_OFS
= 0x1d58,
124 PCI_IRQ_MASK_OFS
= 0x1d5c,
125 PCI_UNMASK_ALL_IRQS
= 0x7fffff, /* bits 22-0 */
127 HC_MAIN_IRQ_CAUSE_OFS
= 0x1d60,
128 HC_MAIN_IRQ_MASK_OFS
= 0x1d64,
129 PORT0_ERR
= (1 << 0), /* shift by port # */
130 PORT0_DONE
= (1 << 1), /* shift by port # */
131 HC0_IRQ_PEND
= 0x1ff, /* bits 0-8 = HC0's ports */
132 HC_SHIFT
= 9, /* bits 9-17 = HC1's ports */
134 TRAN_LO_DONE
= (1 << 19), /* 6xxx: IRQ coalescing */
135 TRAN_HI_DONE
= (1 << 20), /* 6xxx: IRQ coalescing */
136 PORTS_0_7_COAL_DONE
= (1 << 21), /* 6xxx: IRQ coalescing */
137 GPIO_INT
= (1 << 22),
138 SELF_INT
= (1 << 23),
139 TWSI_INT
= (1 << 24),
140 HC_MAIN_RSVD
= (0x7f << 25), /* bits 31-25 */
141 HC_MAIN_MASKED_IRQS
= (TRAN_LO_DONE
| TRAN_HI_DONE
|
142 PORTS_0_7_COAL_DONE
| GPIO_INT
| TWSI_INT
|
145 /* SATAHC registers */
148 HC_IRQ_CAUSE_OFS
= 0x14,
149 CRPB_DMA_DONE
= (1 << 0), /* shift by port # */
150 HC_IRQ_COAL
= (1 << 4), /* IRQ coalescing */
151 DEV_IRQ
= (1 << 8), /* shift by port # */
153 /* Shadow block registers */
155 SHD_CTL_AST_OFS
= 0x20, /* ofs from SHD_BLK_OFS */
158 SATA_STATUS_OFS
= 0x300, /* ctrl, err regs follow status */
159 SATA_ACTIVE_OFS
= 0x350,
166 SATA_INTERFACE_CTL
= 0x050,
168 MV_M2_PREAMP_MASK
= 0x7e0,
172 EDMA_CFG_Q_DEPTH
= 0, /* queueing disabled */
173 EDMA_CFG_NCQ
= (1 << 5),
174 EDMA_CFG_NCQ_GO_ON_ERR
= (1 << 14), /* continue on error */
175 EDMA_CFG_RD_BRST_EXT
= (1 << 11), /* read burst 512B */
176 EDMA_CFG_WR_BUFF_LEN
= (1 << 13), /* write buffer 512B */
178 EDMA_ERR_IRQ_CAUSE_OFS
= 0x8,
179 EDMA_ERR_IRQ_MASK_OFS
= 0xc,
180 EDMA_ERR_D_PAR
= (1 << 0),
181 EDMA_ERR_PRD_PAR
= (1 << 1),
182 EDMA_ERR_DEV
= (1 << 2),
183 EDMA_ERR_DEV_DCON
= (1 << 3),
184 EDMA_ERR_DEV_CON
= (1 << 4),
185 EDMA_ERR_SERR
= (1 << 5),
186 EDMA_ERR_SELF_DIS
= (1 << 7),
187 EDMA_ERR_BIST_ASYNC
= (1 << 8),
188 EDMA_ERR_CRBQ_PAR
= (1 << 9),
189 EDMA_ERR_CRPB_PAR
= (1 << 10),
190 EDMA_ERR_INTRL_PAR
= (1 << 11),
191 EDMA_ERR_IORDY
= (1 << 12),
192 EDMA_ERR_LNK_CTRL_RX
= (0xf << 13),
193 EDMA_ERR_LNK_CTRL_RX_2
= (1 << 15),
194 EDMA_ERR_LNK_DATA_RX
= (0xf << 17),
195 EDMA_ERR_LNK_CTRL_TX
= (0x1f << 21),
196 EDMA_ERR_LNK_DATA_TX
= (0x1f << 26),
197 EDMA_ERR_TRANS_PROTO
= (1 << 31),
198 EDMA_ERR_FATAL
= (EDMA_ERR_D_PAR
| EDMA_ERR_PRD_PAR
|
199 EDMA_ERR_DEV_DCON
| EDMA_ERR_CRBQ_PAR
|
200 EDMA_ERR_CRPB_PAR
| EDMA_ERR_INTRL_PAR
|
201 EDMA_ERR_IORDY
| EDMA_ERR_LNK_CTRL_RX_2
|
202 EDMA_ERR_LNK_DATA_RX
|
203 EDMA_ERR_LNK_DATA_TX
|
204 EDMA_ERR_TRANS_PROTO
),
206 EDMA_REQ_Q_BASE_HI_OFS
= 0x10,
207 EDMA_REQ_Q_IN_PTR_OFS
= 0x14, /* also contains BASE_LO */
209 EDMA_REQ_Q_OUT_PTR_OFS
= 0x18,
210 EDMA_REQ_Q_PTR_SHIFT
= 5,
212 EDMA_RSP_Q_BASE_HI_OFS
= 0x1c,
213 EDMA_RSP_Q_IN_PTR_OFS
= 0x20,
214 EDMA_RSP_Q_OUT_PTR_OFS
= 0x24, /* also contains BASE_LO */
215 EDMA_RSP_Q_PTR_SHIFT
= 3,
222 EDMA_IORDY_TMOUT
= 0x34,
225 /* Host private flags (hp_flags) */
226 MV_HP_FLAG_MSI
= (1 << 0),
227 MV_HP_ERRATA_50XXB0
= (1 << 1),
228 MV_HP_ERRATA_50XXB2
= (1 << 2),
229 MV_HP_ERRATA_60X1B2
= (1 << 3),
230 MV_HP_ERRATA_60X1C0
= (1 << 4),
231 MV_HP_50XX
= (1 << 5),
233 /* Port private flags (pp_flags) */
234 MV_PP_FLAG_EDMA_EN
= (1 << 0),
235 MV_PP_FLAG_EDMA_DS_ACT
= (1 << 1),
238 #define IS_50XX(hpriv) ((hpriv)->hp_flags & MV_HP_50XX)
239 #define IS_60XX(hpriv) (((hpriv)->hp_flags & MV_HP_50XX) == 0)
242 /* Our DMA boundary is determined by an ePRD being unable to handle
243 * anything larger than 64KB
245 MV_DMA_BOUNDARY
= 0xffffU
,
247 EDMA_REQ_Q_BASE_LO_MASK
= 0xfffffc00U
,
249 EDMA_RSP_Q_BASE_LO_MASK
= 0xffffff00U
,
260 /* Command ReQuest Block: 32B */
268 /* Command ResPonse Block: 8B */
275 /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
283 struct mv_port_priv
{
284 struct mv_crqb
*crqb
;
286 struct mv_crpb
*crpb
;
288 struct mv_sg
*sg_tbl
;
289 dma_addr_t sg_tbl_dma
;
291 unsigned req_producer
; /* cp of req_in_ptr */
292 unsigned rsp_consumer
; /* cp of rsp_out_ptr */
296 struct mv_port_signal
{
303 void (*phy_errata
)(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
305 void (*enable_leds
)(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
306 void (*read_preamp
)(struct mv_host_priv
*hpriv
, int idx
,
308 int (*reset_hc
)(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
310 void (*reset_flash
)(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
311 void (*reset_bus
)(struct pci_dev
*pdev
, void __iomem
*mmio
);
314 struct mv_host_priv
{
316 struct mv_port_signal signal
[8];
317 const struct mv_hw_ops
*ops
;
320 static void mv_irq_clear(struct ata_port
*ap
);
321 static u32
mv_scr_read(struct ata_port
*ap
, unsigned int sc_reg_in
);
322 static void mv_scr_write(struct ata_port
*ap
, unsigned int sc_reg_in
, u32 val
);
323 static u32
mv5_scr_read(struct ata_port
*ap
, unsigned int sc_reg_in
);
324 static void mv5_scr_write(struct ata_port
*ap
, unsigned int sc_reg_in
, u32 val
);
325 static void mv_phy_reset(struct ata_port
*ap
);
326 static void __mv_phy_reset(struct ata_port
*ap
, int can_sleep
);
327 static void mv_host_stop(struct ata_host_set
*host_set
);
328 static int mv_port_start(struct ata_port
*ap
);
329 static void mv_port_stop(struct ata_port
*ap
);
330 static void mv_qc_prep(struct ata_queued_cmd
*qc
);
331 static int mv_qc_issue(struct ata_queued_cmd
*qc
);
332 static irqreturn_t
mv_interrupt(int irq
, void *dev_instance
,
333 struct pt_regs
*regs
);
334 static void mv_eng_timeout(struct ata_port
*ap
);
335 static int mv_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
337 static void mv5_phy_errata(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
339 static void mv5_enable_leds(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
340 static void mv5_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
342 static int mv5_reset_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
344 static void mv5_reset_flash(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
345 static void mv5_reset_bus(struct pci_dev
*pdev
, void __iomem
*mmio
);
347 static void mv6_phy_errata(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
349 static void mv6_enable_leds(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
350 static void mv6_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
352 static int mv6_reset_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
354 static void mv6_reset_flash(struct mv_host_priv
*hpriv
, void __iomem
*mmio
);
355 static void mv_reset_pci_bus(struct pci_dev
*pdev
, void __iomem
*mmio
);
356 static void mv_channel_reset(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
357 unsigned int port_no
);
358 static void mv_stop_and_reset(struct ata_port
*ap
);
360 static struct scsi_host_template mv_sht
= {
361 .module
= THIS_MODULE
,
363 .ioctl
= ata_scsi_ioctl
,
364 .queuecommand
= ata_scsi_queuecmd
,
365 .eh_strategy_handler
= ata_scsi_error
,
366 .can_queue
= MV_USE_Q_DEPTH
,
367 .this_id
= ATA_SHT_THIS_ID
,
368 .sg_tablesize
= MV_MAX_SG_CT
/ 2,
369 .max_sectors
= ATA_MAX_SECTORS
,
370 .cmd_per_lun
= ATA_SHT_CMD_PER_LUN
,
371 .emulated
= ATA_SHT_EMULATED
,
372 .use_clustering
= ATA_SHT_USE_CLUSTERING
,
373 .proc_name
= DRV_NAME
,
374 .dma_boundary
= MV_DMA_BOUNDARY
,
375 .slave_configure
= ata_scsi_slave_config
,
376 .bios_param
= ata_std_bios_param
,
380 static const struct ata_port_operations mv5_ops
= {
381 .port_disable
= ata_port_disable
,
383 .tf_load
= ata_tf_load
,
384 .tf_read
= ata_tf_read
,
385 .check_status
= ata_check_status
,
386 .exec_command
= ata_exec_command
,
387 .dev_select
= ata_std_dev_select
,
389 .phy_reset
= mv_phy_reset
,
391 .qc_prep
= mv_qc_prep
,
392 .qc_issue
= mv_qc_issue
,
394 .eng_timeout
= mv_eng_timeout
,
396 .irq_handler
= mv_interrupt
,
397 .irq_clear
= mv_irq_clear
,
399 .scr_read
= mv5_scr_read
,
400 .scr_write
= mv5_scr_write
,
402 .port_start
= mv_port_start
,
403 .port_stop
= mv_port_stop
,
404 .host_stop
= mv_host_stop
,
407 static const struct ata_port_operations mv6_ops
= {
408 .port_disable
= ata_port_disable
,
410 .tf_load
= ata_tf_load
,
411 .tf_read
= ata_tf_read
,
412 .check_status
= ata_check_status
,
413 .exec_command
= ata_exec_command
,
414 .dev_select
= ata_std_dev_select
,
416 .phy_reset
= mv_phy_reset
,
418 .qc_prep
= mv_qc_prep
,
419 .qc_issue
= mv_qc_issue
,
421 .eng_timeout
= mv_eng_timeout
,
423 .irq_handler
= mv_interrupt
,
424 .irq_clear
= mv_irq_clear
,
426 .scr_read
= mv_scr_read
,
427 .scr_write
= mv_scr_write
,
429 .port_start
= mv_port_start
,
430 .port_stop
= mv_port_stop
,
431 .host_stop
= mv_host_stop
,
434 static struct ata_port_info mv_port_info
[] = {
437 .host_flags
= MV_COMMON_FLAGS
,
438 .pio_mask
= 0x1f, /* pio0-4 */
439 .udma_mask
= 0x7f, /* udma0-6 */
440 .port_ops
= &mv5_ops
,
444 .host_flags
= (MV_COMMON_FLAGS
| MV_FLAG_DUAL_HC
),
445 .pio_mask
= 0x1f, /* pio0-4 */
446 .udma_mask
= 0x7f, /* udma0-6 */
447 .port_ops
= &mv5_ops
,
451 .host_flags
= (MV_COMMON_FLAGS
| MV_FLAG_DUAL_HC
),
452 .pio_mask
= 0x1f, /* pio0-4 */
453 .udma_mask
= 0x7f, /* udma0-6 */
454 .port_ops
= &mv5_ops
,
458 .host_flags
= (MV_COMMON_FLAGS
| MV_6XXX_FLAGS
),
459 .pio_mask
= 0x1f, /* pio0-4 */
460 .udma_mask
= 0x7f, /* udma0-6 */
461 .port_ops
= &mv6_ops
,
465 .host_flags
= (MV_COMMON_FLAGS
| MV_6XXX_FLAGS
|
467 .pio_mask
= 0x1f, /* pio0-4 */
468 .udma_mask
= 0x7f, /* udma0-6 */
469 .port_ops
= &mv6_ops
,
473 static const struct pci_device_id mv_pci_tbl
[] = {
474 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL
, 0x5040), 0, 0, chip_504x
},
475 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL
, 0x5041), 0, 0, chip_504x
},
476 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL
, 0x5080), 0, 0, chip_5080
},
477 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL
, 0x5081), 0, 0, chip_508x
},
479 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL
, 0x6040), 0, 0, chip_604x
},
480 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL
, 0x6041), 0, 0, chip_604x
},
481 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL
, 0x6080), 0, 0, chip_608x
},
482 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL
, 0x6081), 0, 0, chip_608x
},
484 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2
, 0x0241), 0, 0, chip_604x
},
485 {} /* terminate list */
488 static struct pci_driver mv_pci_driver
= {
490 .id_table
= mv_pci_tbl
,
491 .probe
= mv_init_one
,
492 .remove
= ata_pci_remove_one
,
495 static const struct mv_hw_ops mv5xxx_ops
= {
496 .phy_errata
= mv5_phy_errata
,
497 .enable_leds
= mv5_enable_leds
,
498 .read_preamp
= mv5_read_preamp
,
499 .reset_hc
= mv5_reset_hc
,
500 .reset_flash
= mv5_reset_flash
,
501 .reset_bus
= mv5_reset_bus
,
504 static const struct mv_hw_ops mv6xxx_ops
= {
505 .phy_errata
= mv6_phy_errata
,
506 .enable_leds
= mv6_enable_leds
,
507 .read_preamp
= mv6_read_preamp
,
508 .reset_hc
= mv6_reset_hc
,
509 .reset_flash
= mv6_reset_flash
,
510 .reset_bus
= mv_reset_pci_bus
,
517 static inline void writelfl(unsigned long data
, void __iomem
*addr
)
520 (void) readl(addr
); /* flush to avoid PCI posted write */
523 static inline void __iomem
*mv_hc_base(void __iomem
*base
, unsigned int hc
)
525 return (base
+ MV_SATAHC0_REG_BASE
+ (hc
* MV_SATAHC_REG_SZ
));
528 static inline unsigned int mv_hc_from_port(unsigned int port
)
530 return port
>> MV_PORT_HC_SHIFT
;
533 static inline unsigned int mv_hardport_from_port(unsigned int port
)
535 return port
& MV_PORT_MASK
;
538 static inline void __iomem
*mv_hc_base_from_port(void __iomem
*base
,
541 return mv_hc_base(base
, mv_hc_from_port(port
));
544 static inline void __iomem
*mv_port_base(void __iomem
*base
, unsigned int port
)
546 return mv_hc_base_from_port(base
, port
) +
547 MV_SATAHC_ARBTR_REG_SZ
+
548 (mv_hardport_from_port(port
) * MV_PORT_REG_SZ
);
551 static inline void __iomem
*mv_ap_base(struct ata_port
*ap
)
553 return mv_port_base(ap
->host_set
->mmio_base
, ap
->port_no
);
556 static inline int mv_get_hc_count(unsigned long host_flags
)
558 return ((host_flags
& MV_FLAG_DUAL_HC
) ? 2 : 1);
561 static void mv_irq_clear(struct ata_port
*ap
)
566 * mv_start_dma - Enable eDMA engine
567 * @base: port base address
568 * @pp: port private data
570 * Verify the local cache of the eDMA state is accurate with an
574 * Inherited from caller.
576 static void mv_start_dma(void __iomem
*base
, struct mv_port_priv
*pp
)
578 if (!(MV_PP_FLAG_EDMA_EN
& pp
->pp_flags
)) {
579 writelfl(EDMA_EN
, base
+ EDMA_CMD_OFS
);
580 pp
->pp_flags
|= MV_PP_FLAG_EDMA_EN
;
582 assert(EDMA_EN
& readl(base
+ EDMA_CMD_OFS
));
586 * mv_stop_dma - Disable eDMA engine
587 * @ap: ATA channel to manipulate
589 * Verify the local cache of the eDMA state is accurate with an
593 * Inherited from caller.
595 static void mv_stop_dma(struct ata_port
*ap
)
597 void __iomem
*port_mmio
= mv_ap_base(ap
);
598 struct mv_port_priv
*pp
= ap
->private_data
;
602 if (MV_PP_FLAG_EDMA_EN
& pp
->pp_flags
) {
603 /* Disable EDMA if active. The disable bit auto clears.
605 writelfl(EDMA_DS
, port_mmio
+ EDMA_CMD_OFS
);
606 pp
->pp_flags
&= ~MV_PP_FLAG_EDMA_EN
;
608 assert(!(EDMA_EN
& readl(port_mmio
+ EDMA_CMD_OFS
)));
611 /* now properly wait for the eDMA to stop */
612 for (i
= 1000; i
> 0; i
--) {
613 reg
= readl(port_mmio
+ EDMA_CMD_OFS
);
614 if (!(EDMA_EN
& reg
)) {
621 printk(KERN_ERR
"ata%u: Unable to stop eDMA\n", ap
->id
);
622 /* FIXME: Consider doing a reset here to recover */
627 static void mv_dump_mem(void __iomem
*start
, unsigned bytes
)
630 for (b
= 0; b
< bytes
; ) {
631 DPRINTK("%p: ", start
+ b
);
632 for (w
= 0; b
< bytes
&& w
< 4; w
++) {
633 printk("%08x ",readl(start
+ b
));
641 static void mv_dump_pci_cfg(struct pci_dev
*pdev
, unsigned bytes
)
646 for (b
= 0; b
< bytes
; ) {
647 DPRINTK("%02x: ", b
);
648 for (w
= 0; b
< bytes
&& w
< 4; w
++) {
649 (void) pci_read_config_dword(pdev
,b
,&dw
);
657 static void mv_dump_all_regs(void __iomem
*mmio_base
, int port
,
658 struct pci_dev
*pdev
)
661 void __iomem
*hc_base
= mv_hc_base(mmio_base
,
662 port
>> MV_PORT_HC_SHIFT
);
663 void __iomem
*port_base
;
664 int start_port
, num_ports
, p
, start_hc
, num_hcs
, hc
;
667 start_hc
= start_port
= 0;
668 num_ports
= 8; /* shld be benign for 4 port devs */
671 start_hc
= port
>> MV_PORT_HC_SHIFT
;
673 num_ports
= num_hcs
= 1;
675 DPRINTK("All registers for port(s) %u-%u:\n", start_port
,
676 num_ports
> 1 ? num_ports
- 1 : start_port
);
679 DPRINTK("PCI config space regs:\n");
680 mv_dump_pci_cfg(pdev
, 0x68);
682 DPRINTK("PCI regs:\n");
683 mv_dump_mem(mmio_base
+0xc00, 0x3c);
684 mv_dump_mem(mmio_base
+0xd00, 0x34);
685 mv_dump_mem(mmio_base
+0xf00, 0x4);
686 mv_dump_mem(mmio_base
+0x1d00, 0x6c);
687 for (hc
= start_hc
; hc
< start_hc
+ num_hcs
; hc
++) {
688 hc_base
= mv_hc_base(mmio_base
, port
>> MV_PORT_HC_SHIFT
);
689 DPRINTK("HC regs (HC %i):\n", hc
);
690 mv_dump_mem(hc_base
, 0x1c);
692 for (p
= start_port
; p
< start_port
+ num_ports
; p
++) {
693 port_base
= mv_port_base(mmio_base
, p
);
694 DPRINTK("EDMA regs (port %i):\n",p
);
695 mv_dump_mem(port_base
, 0x54);
696 DPRINTK("SATA regs (port %i):\n",p
);
697 mv_dump_mem(port_base
+0x300, 0x60);
702 static unsigned int mv_scr_offset(unsigned int sc_reg_in
)
710 ofs
= SATA_STATUS_OFS
+ (sc_reg_in
* sizeof(u32
));
713 ofs
= SATA_ACTIVE_OFS
; /* active is not with the others */
722 static u32
mv_scr_read(struct ata_port
*ap
, unsigned int sc_reg_in
)
724 unsigned int ofs
= mv_scr_offset(sc_reg_in
);
726 if (0xffffffffU
!= ofs
) {
727 return readl(mv_ap_base(ap
) + ofs
);
733 static void mv_scr_write(struct ata_port
*ap
, unsigned int sc_reg_in
, u32 val
)
735 unsigned int ofs
= mv_scr_offset(sc_reg_in
);
737 if (0xffffffffU
!= ofs
) {
738 writelfl(val
, mv_ap_base(ap
) + ofs
);
743 * mv_host_stop - Host specific cleanup/stop routine.
744 * @host_set: host data structure
746 * Disable ints, cleanup host memory, call general purpose
750 * Inherited from caller.
752 static void mv_host_stop(struct ata_host_set
*host_set
)
754 struct mv_host_priv
*hpriv
= host_set
->private_data
;
755 struct pci_dev
*pdev
= to_pci_dev(host_set
->dev
);
757 if (hpriv
->hp_flags
& MV_HP_FLAG_MSI
) {
758 pci_disable_msi(pdev
);
763 ata_host_stop(host_set
);
766 static inline void mv_priv_free(struct mv_port_priv
*pp
, struct device
*dev
)
768 dma_free_coherent(dev
, MV_PORT_PRIV_DMA_SZ
, pp
->crpb
, pp
->crpb_dma
);
772 * mv_port_start - Port specific init/start routine.
773 * @ap: ATA channel to manipulate
775 * Allocate and point to DMA memory, init port private memory,
779 * Inherited from caller.
781 static int mv_port_start(struct ata_port
*ap
)
783 struct device
*dev
= ap
->host_set
->dev
;
784 struct mv_port_priv
*pp
;
785 void __iomem
*port_mmio
= mv_ap_base(ap
);
790 pp
= kmalloc(sizeof(*pp
), GFP_KERNEL
);
793 memset(pp
, 0, sizeof(*pp
));
795 mem
= dma_alloc_coherent(dev
, MV_PORT_PRIV_DMA_SZ
, &mem_dma
,
799 memset(mem
, 0, MV_PORT_PRIV_DMA_SZ
);
801 rc
= ata_pad_alloc(ap
, dev
);
805 /* First item in chunk of DMA memory:
806 * 32-slot command request table (CRQB), 32 bytes each in size
809 pp
->crqb_dma
= mem_dma
;
811 mem_dma
+= MV_CRQB_Q_SZ
;
814 * 32-slot command response table (CRPB), 8 bytes each in size
817 pp
->crpb_dma
= mem_dma
;
819 mem_dma
+= MV_CRPB_Q_SZ
;
822 * Table of scatter-gather descriptors (ePRD), 16 bytes each
825 pp
->sg_tbl_dma
= mem_dma
;
827 writelfl(EDMA_CFG_Q_DEPTH
| EDMA_CFG_RD_BRST_EXT
|
828 EDMA_CFG_WR_BUFF_LEN
, port_mmio
+ EDMA_CFG_OFS
);
830 writel((pp
->crqb_dma
>> 16) >> 16, port_mmio
+ EDMA_REQ_Q_BASE_HI_OFS
);
831 writelfl(pp
->crqb_dma
& EDMA_REQ_Q_BASE_LO_MASK
,
832 port_mmio
+ EDMA_REQ_Q_IN_PTR_OFS
);
834 writelfl(0, port_mmio
+ EDMA_REQ_Q_OUT_PTR_OFS
);
835 writelfl(0, port_mmio
+ EDMA_RSP_Q_IN_PTR_OFS
);
837 writel((pp
->crpb_dma
>> 16) >> 16, port_mmio
+ EDMA_RSP_Q_BASE_HI_OFS
);
838 writelfl(pp
->crpb_dma
& EDMA_RSP_Q_BASE_LO_MASK
,
839 port_mmio
+ EDMA_RSP_Q_OUT_PTR_OFS
);
841 pp
->req_producer
= pp
->rsp_consumer
= 0;
843 /* Don't turn on EDMA here...do it before DMA commands only. Else
844 * we'll be unable to send non-data, PIO, etc due to restricted access
847 ap
->private_data
= pp
;
851 mv_priv_free(pp
, dev
);
859 * mv_port_stop - Port specific cleanup/stop routine.
860 * @ap: ATA channel to manipulate
862 * Stop DMA, cleanup port memory.
865 * This routine uses the host_set lock to protect the DMA stop.
867 static void mv_port_stop(struct ata_port
*ap
)
869 struct device
*dev
= ap
->host_set
->dev
;
870 struct mv_port_priv
*pp
= ap
->private_data
;
873 spin_lock_irqsave(&ap
->host_set
->lock
, flags
);
875 spin_unlock_irqrestore(&ap
->host_set
->lock
, flags
);
877 ap
->private_data
= NULL
;
878 ata_pad_free(ap
, dev
);
879 mv_priv_free(pp
, dev
);
884 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
885 * @qc: queued command whose SG list to source from
887 * Populate the SG list and mark the last entry.
890 * Inherited from caller.
892 static void mv_fill_sg(struct ata_queued_cmd
*qc
)
894 struct mv_port_priv
*pp
= qc
->ap
->private_data
;
896 struct scatterlist
*sg
;
898 ata_for_each_sg(sg
, qc
) {
900 u32 sg_len
, len
, offset
;
902 addr
= sg_dma_address(sg
);
903 sg_len
= sg_dma_len(sg
);
906 offset
= addr
& MV_DMA_BOUNDARY
;
908 if ((offset
+ sg_len
) > 0x10000)
909 len
= 0x10000 - offset
;
911 pp
->sg_tbl
[i
].addr
= cpu_to_le32(addr
& 0xffffffff);
912 pp
->sg_tbl
[i
].addr_hi
= cpu_to_le32((addr
>> 16) >> 16);
913 pp
->sg_tbl
[i
].flags_size
= cpu_to_le32(len
);
918 if (!sg_len
&& ata_sg_is_last(sg
, qc
))
919 pp
->sg_tbl
[i
].flags_size
|= cpu_to_le32(EPRD_FLAG_END_OF_TBL
);
926 static inline unsigned mv_inc_q_index(unsigned *index
)
928 *index
= (*index
+ 1) & MV_MAX_Q_DEPTH_MASK
;
932 static inline void mv_crqb_pack_cmd(u16
*cmdw
, u8 data
, u8 addr
, unsigned last
)
934 *cmdw
= data
| (addr
<< CRQB_CMD_ADDR_SHIFT
) | CRQB_CMD_CS
|
935 (last
? CRQB_CMD_LAST
: 0);
939 * mv_qc_prep - Host specific command preparation.
940 * @qc: queued command to prepare
942 * This routine simply redirects to the general purpose routine
943 * if command is not DMA. Else, it handles prep of the CRQB
944 * (command request block), does some sanity checking, and calls
945 * the SG load routine.
948 * Inherited from caller.
950 static void mv_qc_prep(struct ata_queued_cmd
*qc
)
952 struct ata_port
*ap
= qc
->ap
;
953 struct mv_port_priv
*pp
= ap
->private_data
;
955 struct ata_taskfile
*tf
;
958 if (ATA_PROT_DMA
!= qc
->tf
.protocol
) {
962 /* the req producer index should be the same as we remember it */
963 assert(((readl(mv_ap_base(qc
->ap
) + EDMA_REQ_Q_IN_PTR_OFS
) >>
964 EDMA_REQ_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
) ==
967 /* Fill in command request block
969 if (!(qc
->tf
.flags
& ATA_TFLAG_WRITE
)) {
970 flags
|= CRQB_FLAG_READ
;
972 assert(MV_MAX_Q_DEPTH
> qc
->tag
);
973 flags
|= qc
->tag
<< CRQB_TAG_SHIFT
;
975 pp
->crqb
[pp
->req_producer
].sg_addr
=
976 cpu_to_le32(pp
->sg_tbl_dma
& 0xffffffff);
977 pp
->crqb
[pp
->req_producer
].sg_addr_hi
=
978 cpu_to_le32((pp
->sg_tbl_dma
>> 16) >> 16);
979 pp
->crqb
[pp
->req_producer
].ctrl_flags
= cpu_to_le16(flags
);
981 cw
= &pp
->crqb
[pp
->req_producer
].ata_cmd
[0];
984 /* Sadly, the CRQB cannot accomodate all registers--there are
985 * only 11 bytes...so we must pick and choose required
986 * registers based on the command. So, we drop feature and
987 * hob_feature for [RW] DMA commands, but they are needed for
988 * NCQ. NCQ will drop hob_nsect.
990 switch (tf
->command
) {
992 case ATA_CMD_READ_EXT
:
994 case ATA_CMD_WRITE_EXT
:
995 mv_crqb_pack_cmd(cw
++, tf
->hob_nsect
, ATA_REG_NSECT
, 0);
997 #ifdef LIBATA_NCQ /* FIXME: remove this line when NCQ added */
998 case ATA_CMD_FPDMA_READ
:
999 case ATA_CMD_FPDMA_WRITE
:
1000 mv_crqb_pack_cmd(cw
++, tf
->hob_feature
, ATA_REG_FEATURE
, 0);
1001 mv_crqb_pack_cmd(cw
++, tf
->feature
, ATA_REG_FEATURE
, 0);
1003 #endif /* FIXME: remove this line when NCQ added */
1005 /* The only other commands EDMA supports in non-queued and
1006 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
1007 * of which are defined/used by Linux. If we get here, this
1008 * driver needs work.
1010 * FIXME: modify libata to give qc_prep a return value and
1011 * return error here.
1013 BUG_ON(tf
->command
);
1016 mv_crqb_pack_cmd(cw
++, tf
->nsect
, ATA_REG_NSECT
, 0);
1017 mv_crqb_pack_cmd(cw
++, tf
->hob_lbal
, ATA_REG_LBAL
, 0);
1018 mv_crqb_pack_cmd(cw
++, tf
->lbal
, ATA_REG_LBAL
, 0);
1019 mv_crqb_pack_cmd(cw
++, tf
->hob_lbam
, ATA_REG_LBAM
, 0);
1020 mv_crqb_pack_cmd(cw
++, tf
->lbam
, ATA_REG_LBAM
, 0);
1021 mv_crqb_pack_cmd(cw
++, tf
->hob_lbah
, ATA_REG_LBAH
, 0);
1022 mv_crqb_pack_cmd(cw
++, tf
->lbah
, ATA_REG_LBAH
, 0);
1023 mv_crqb_pack_cmd(cw
++, tf
->device
, ATA_REG_DEVICE
, 0);
1024 mv_crqb_pack_cmd(cw
++, tf
->command
, ATA_REG_CMD
, 1); /* last */
1026 if (!(qc
->flags
& ATA_QCFLAG_DMAMAP
)) {
1033 * mv_qc_issue - Initiate a command to the host
1034 * @qc: queued command to start
1036 * This routine simply redirects to the general purpose routine
1037 * if command is not DMA. Else, it sanity checks our local
1038 * caches of the request producer/consumer indices then enables
1039 * DMA and bumps the request producer index.
1042 * Inherited from caller.
1044 static int mv_qc_issue(struct ata_queued_cmd
*qc
)
1046 void __iomem
*port_mmio
= mv_ap_base(qc
->ap
);
1047 struct mv_port_priv
*pp
= qc
->ap
->private_data
;
1050 if (ATA_PROT_DMA
!= qc
->tf
.protocol
) {
1051 /* We're about to send a non-EDMA capable command to the
1052 * port. Turn off EDMA so there won't be problems accessing
1053 * shadow block, etc registers.
1055 mv_stop_dma(qc
->ap
);
1056 return ata_qc_issue_prot(qc
);
1059 in_ptr
= readl(port_mmio
+ EDMA_REQ_Q_IN_PTR_OFS
);
1061 /* the req producer index should be the same as we remember it */
1062 assert(((in_ptr
>> EDMA_REQ_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
) ==
1064 /* until we do queuing, the queue should be empty at this point */
1065 assert(((in_ptr
>> EDMA_REQ_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
) ==
1066 ((readl(port_mmio
+ EDMA_REQ_Q_OUT_PTR_OFS
) >>
1067 EDMA_REQ_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
));
1069 mv_inc_q_index(&pp
->req_producer
); /* now incr producer index */
1071 mv_start_dma(port_mmio
, pp
);
1073 /* and write the request in pointer to kick the EDMA to life */
1074 in_ptr
&= EDMA_REQ_Q_BASE_LO_MASK
;
1075 in_ptr
|= pp
->req_producer
<< EDMA_REQ_Q_PTR_SHIFT
;
1076 writelfl(in_ptr
, port_mmio
+ EDMA_REQ_Q_IN_PTR_OFS
);
1082 * mv_get_crpb_status - get status from most recently completed cmd
1083 * @ap: ATA channel to manipulate
1085 * This routine is for use when the port is in DMA mode, when it
1086 * will be using the CRPB (command response block) method of
1087 * returning command completion information. We assert indices
1088 * are good, grab status, and bump the response consumer index to
1089 * prove that we're up to date.
1092 * Inherited from caller.
1094 static u8
mv_get_crpb_status(struct ata_port
*ap
)
1096 void __iomem
*port_mmio
= mv_ap_base(ap
);
1097 struct mv_port_priv
*pp
= ap
->private_data
;
1100 out_ptr
= readl(port_mmio
+ EDMA_RSP_Q_OUT_PTR_OFS
);
1102 /* the response consumer index should be the same as we remember it */
1103 assert(((out_ptr
>> EDMA_RSP_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
) ==
1106 /* increment our consumer index... */
1107 pp
->rsp_consumer
= mv_inc_q_index(&pp
->rsp_consumer
);
1109 /* and, until we do NCQ, there should only be 1 CRPB waiting */
1110 assert(((readl(port_mmio
+ EDMA_RSP_Q_IN_PTR_OFS
) >>
1111 EDMA_RSP_Q_PTR_SHIFT
) & MV_MAX_Q_DEPTH_MASK
) ==
1114 /* write out our inc'd consumer index so EDMA knows we're caught up */
1115 out_ptr
&= EDMA_RSP_Q_BASE_LO_MASK
;
1116 out_ptr
|= pp
->rsp_consumer
<< EDMA_RSP_Q_PTR_SHIFT
;
1117 writelfl(out_ptr
, port_mmio
+ EDMA_RSP_Q_OUT_PTR_OFS
);
1119 /* Return ATA status register for completed CRPB */
1120 return (pp
->crpb
[pp
->rsp_consumer
].flags
>> CRPB_FLAG_STATUS_SHIFT
);
1124 * mv_err_intr - Handle error interrupts on the port
1125 * @ap: ATA channel to manipulate
1127 * In most cases, just clear the interrupt and move on. However,
1128 * some cases require an eDMA reset, which is done right before
1129 * the COMRESET in mv_phy_reset(). The SERR case requires a
1130 * clear of pending errors in the SATA SERROR register. Finally,
1131 * if the port disabled DMA, update our cached copy to match.
1134 * Inherited from caller.
1136 static void mv_err_intr(struct ata_port
*ap
)
1138 void __iomem
*port_mmio
= mv_ap_base(ap
);
1139 u32 edma_err_cause
, serr
= 0;
1141 edma_err_cause
= readl(port_mmio
+ EDMA_ERR_IRQ_CAUSE_OFS
);
1143 if (EDMA_ERR_SERR
& edma_err_cause
) {
1144 serr
= scr_read(ap
, SCR_ERROR
);
1145 scr_write_flush(ap
, SCR_ERROR
, serr
);
1147 if (EDMA_ERR_SELF_DIS
& edma_err_cause
) {
1148 struct mv_port_priv
*pp
= ap
->private_data
;
1149 pp
->pp_flags
&= ~MV_PP_FLAG_EDMA_EN
;
1151 DPRINTK(KERN_ERR
"ata%u: port error; EDMA err cause: 0x%08x "
1152 "SERR: 0x%08x\n", ap
->id
, edma_err_cause
, serr
);
1154 /* Clear EDMA now that SERR cleanup done */
1155 writelfl(0, port_mmio
+ EDMA_ERR_IRQ_CAUSE_OFS
);
1157 /* check for fatal here and recover if needed */
1158 if (EDMA_ERR_FATAL
& edma_err_cause
) {
1159 mv_stop_and_reset(ap
);
1164 * mv_host_intr - Handle all interrupts on the given host controller
1165 * @host_set: host specific structure
1166 * @relevant: port error bits relevant to this host controller
1167 * @hc: which host controller we're to look at
1169 * Read then write clear the HC interrupt status then walk each
1170 * port connected to the HC and see if it needs servicing. Port
1171 * success ints are reported in the HC interrupt status reg, the
1172 * port error ints are reported in the higher level main
1173 * interrupt status register and thus are passed in via the
1174 * 'relevant' argument.
1177 * Inherited from caller.
1179 static void mv_host_intr(struct ata_host_set
*host_set
, u32 relevant
,
1182 void __iomem
*mmio
= host_set
->mmio_base
;
1183 void __iomem
*hc_mmio
= mv_hc_base(mmio
, hc
);
1184 struct ata_port
*ap
;
1185 struct ata_queued_cmd
*qc
;
1187 int shift
, port
, port0
, hard_port
, handled
;
1188 unsigned int err_mask
;
1194 port0
= MV_PORTS_PER_HC
;
1197 /* we'll need the HC success int register in most cases */
1198 hc_irq_cause
= readl(hc_mmio
+ HC_IRQ_CAUSE_OFS
);
1200 writelfl(~hc_irq_cause
, hc_mmio
+ HC_IRQ_CAUSE_OFS
);
1203 VPRINTK("ENTER, hc%u relevant=0x%08x HC IRQ cause=0x%08x\n",
1204 hc
,relevant
,hc_irq_cause
);
1206 for (port
= port0
; port
< port0
+ MV_PORTS_PER_HC
; port
++) {
1207 ap
= host_set
->ports
[port
];
1208 hard_port
= port
& MV_PORT_MASK
; /* range 0-3 */
1209 handled
= 0; /* ensure ata_status is set if handled++ */
1211 if ((CRPB_DMA_DONE
<< hard_port
) & hc_irq_cause
) {
1212 /* new CRPB on the queue; just one at a time until NCQ
1214 ata_status
= mv_get_crpb_status(ap
);
1216 } else if ((DEV_IRQ
<< hard_port
) & hc_irq_cause
) {
1217 /* received ATA IRQ; read the status reg to clear INTRQ
1219 ata_status
= readb((void __iomem
*)
1220 ap
->ioaddr
.status_addr
);
1225 (ap
->flags
& (ATA_FLAG_PORT_DISABLED
| ATA_FLAG_NOINTR
)))
1228 err_mask
= ac_err_mask(ata_status
);
1230 shift
= port
<< 1; /* (port * 2) */
1231 if (port
>= MV_PORTS_PER_HC
) {
1232 shift
++; /* skip bit 8 in the HC Main IRQ reg */
1234 if ((PORT0_ERR
<< shift
) & relevant
) {
1236 err_mask
|= AC_ERR_OTHER
;
1240 if (handled
&& ap
) {
1241 qc
= ata_qc_from_tag(ap
, ap
->active_tag
);
1243 VPRINTK("port %u IRQ found for qc, "
1244 "ata_status 0x%x\n", port
,ata_status
);
1245 /* mark qc status appropriately */
1246 if (!(qc
->tf
.ctl
& ATA_NIEN
))
1247 ata_qc_complete(qc
, err_mask
);
1257 * @dev_instance: private data; in this case the host structure
1260 * Read the read only register to determine if any host
1261 * controllers have pending interrupts. If so, call lower level
1262 * routine to handle. Also check for PCI errors which are only
1266 * This routine holds the host_set lock while processing pending
1269 static irqreturn_t
mv_interrupt(int irq
, void *dev_instance
,
1270 struct pt_regs
*regs
)
1272 struct ata_host_set
*host_set
= dev_instance
;
1273 unsigned int hc
, handled
= 0, n_hcs
;
1274 void __iomem
*mmio
= host_set
->mmio_base
;
1277 irq_stat
= readl(mmio
+ HC_MAIN_IRQ_CAUSE_OFS
);
1279 /* check the cases where we either have nothing pending or have read
1280 * a bogus register value which can indicate HW removal or PCI fault
1282 if (!irq_stat
|| (0xffffffffU
== irq_stat
)) {
1286 n_hcs
= mv_get_hc_count(host_set
->ports
[0]->flags
);
1287 spin_lock(&host_set
->lock
);
1289 for (hc
= 0; hc
< n_hcs
; hc
++) {
1290 u32 relevant
= irq_stat
& (HC0_IRQ_PEND
<< (hc
* HC_SHIFT
));
1292 mv_host_intr(host_set
, relevant
, hc
);
1296 if (PCI_ERR
& irq_stat
) {
1297 printk(KERN_ERR DRV_NAME
": PCI ERROR; PCI IRQ cause=0x%08x\n",
1298 readl(mmio
+ PCI_IRQ_CAUSE_OFS
));
1300 DPRINTK("All regs @ PCI error\n");
1301 mv_dump_all_regs(mmio
, -1, to_pci_dev(host_set
->dev
));
1303 writelfl(0, mmio
+ PCI_IRQ_CAUSE_OFS
);
1306 spin_unlock(&host_set
->lock
);
1308 return IRQ_RETVAL(handled
);
1311 static void __iomem
*mv5_phy_base(void __iomem
*mmio
, unsigned int port
)
1313 void __iomem
*hc_mmio
= mv_hc_base_from_port(mmio
, port
);
1314 unsigned long ofs
= (mv_hardport_from_port(port
) + 1) * 0x100UL
;
1316 return hc_mmio
+ ofs
;
1319 static unsigned int mv5_scr_offset(unsigned int sc_reg_in
)
1323 switch (sc_reg_in
) {
1327 ofs
= sc_reg_in
* sizeof(u32
);
1336 static u32
mv5_scr_read(struct ata_port
*ap
, unsigned int sc_reg_in
)
1338 void __iomem
*mmio
= mv5_phy_base(ap
->host_set
->mmio_base
, ap
->port_no
);
1339 unsigned int ofs
= mv5_scr_offset(sc_reg_in
);
1341 if (ofs
!= 0xffffffffU
)
1342 return readl(mmio
+ ofs
);
1347 static void mv5_scr_write(struct ata_port
*ap
, unsigned int sc_reg_in
, u32 val
)
1349 void __iomem
*mmio
= mv5_phy_base(ap
->host_set
->mmio_base
, ap
->port_no
);
1350 unsigned int ofs
= mv5_scr_offset(sc_reg_in
);
1352 if (ofs
!= 0xffffffffU
)
1353 writelfl(val
, mmio
+ ofs
);
1356 static void mv5_reset_bus(struct pci_dev
*pdev
, void __iomem
*mmio
)
1361 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &rev_id
);
1363 early_5080
= (pdev
->device
== 0x5080) && (rev_id
== 0);
1366 u32 tmp
= readl(mmio
+ MV_PCI_EXP_ROM_BAR_CTL
);
1368 writel(tmp
, mmio
+ MV_PCI_EXP_ROM_BAR_CTL
);
1371 mv_reset_pci_bus(pdev
, mmio
);
1374 static void mv5_reset_flash(struct mv_host_priv
*hpriv
, void __iomem
*mmio
)
1376 writel(0x0fcfffff, mmio
+ MV_FLASH_CTL
);
1379 static void mv5_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
1382 void __iomem
*phy_mmio
= mv5_phy_base(mmio
, idx
);
1385 tmp
= readl(phy_mmio
+ MV5_PHY_MODE
);
1387 hpriv
->signal
[idx
].pre
= tmp
& 0x1800; /* bits 12:11 */
1388 hpriv
->signal
[idx
].amps
= tmp
& 0xe0; /* bits 7:5 */
1391 static void mv5_enable_leds(struct mv_host_priv
*hpriv
, void __iomem
*mmio
)
1395 writel(0, mmio
+ MV_GPIO_PORT_CTL
);
1397 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
1399 tmp
= readl(mmio
+ MV_PCI_EXP_ROM_BAR_CTL
);
1401 writel(tmp
, mmio
+ MV_PCI_EXP_ROM_BAR_CTL
);
1404 static void mv5_phy_errata(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
1407 void __iomem
*phy_mmio
= mv5_phy_base(mmio
, port
);
1408 const u32 mask
= (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
1410 int fix_apm_sq
= (hpriv
->hp_flags
& MV_HP_ERRATA_50XXB0
);
1413 tmp
= readl(phy_mmio
+ MV5_LT_MODE
);
1415 writel(tmp
, phy_mmio
+ MV5_LT_MODE
);
1417 tmp
= readl(phy_mmio
+ MV5_PHY_CTL
);
1420 writel(tmp
, phy_mmio
+ MV5_PHY_CTL
);
1423 tmp
= readl(phy_mmio
+ MV5_PHY_MODE
);
1425 tmp
|= hpriv
->signal
[port
].pre
;
1426 tmp
|= hpriv
->signal
[port
].amps
;
1427 writel(tmp
, phy_mmio
+ MV5_PHY_MODE
);
1432 #define ZERO(reg) writel(0, port_mmio + (reg))
1433 static void mv5_reset_hc_port(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
1436 void __iomem
*port_mmio
= mv_port_base(mmio
, port
);
1438 writelfl(EDMA_DS
, port_mmio
+ EDMA_CMD_OFS
);
1440 mv_channel_reset(hpriv
, mmio
, port
);
1442 ZERO(0x028); /* command */
1443 writel(0x11f, port_mmio
+ EDMA_CFG_OFS
);
1444 ZERO(0x004); /* timer */
1445 ZERO(0x008); /* irq err cause */
1446 ZERO(0x00c); /* irq err mask */
1447 ZERO(0x010); /* rq bah */
1448 ZERO(0x014); /* rq inp */
1449 ZERO(0x018); /* rq outp */
1450 ZERO(0x01c); /* respq bah */
1451 ZERO(0x024); /* respq outp */
1452 ZERO(0x020); /* respq inp */
1453 ZERO(0x02c); /* test control */
1454 writel(0xbc, port_mmio
+ EDMA_IORDY_TMOUT
);
1458 #define ZERO(reg) writel(0, hc_mmio + (reg))
1459 static void mv5_reset_one_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
1462 void __iomem
*hc_mmio
= mv_hc_base(mmio
, hc
);
1470 tmp
= readl(hc_mmio
+ 0x20);
1473 writel(tmp
, hc_mmio
+ 0x20);
1477 static int mv5_reset_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
1480 unsigned int hc
, port
;
1482 for (hc
= 0; hc
< n_hc
; hc
++) {
1483 for (port
= 0; port
< MV_PORTS_PER_HC
; port
++)
1484 mv5_reset_hc_port(hpriv
, mmio
,
1485 (hc
* MV_PORTS_PER_HC
) + port
);
1487 mv5_reset_one_hc(hpriv
, mmio
, hc
);
1494 #define ZERO(reg) writel(0, mmio + (reg))
1495 static void mv_reset_pci_bus(struct pci_dev
*pdev
, void __iomem
*mmio
)
1499 tmp
= readl(mmio
+ MV_PCI_MODE
);
1501 writel(tmp
, mmio
+ MV_PCI_MODE
);
1503 ZERO(MV_PCI_DISC_TIMER
);
1504 ZERO(MV_PCI_MSI_TRIGGER
);
1505 writel(0x000100ff, mmio
+ MV_PCI_XBAR_TMOUT
);
1506 ZERO(HC_MAIN_IRQ_MASK_OFS
);
1507 ZERO(MV_PCI_SERR_MASK
);
1508 ZERO(PCI_IRQ_CAUSE_OFS
);
1509 ZERO(PCI_IRQ_MASK_OFS
);
1510 ZERO(MV_PCI_ERR_LOW_ADDRESS
);
1511 ZERO(MV_PCI_ERR_HIGH_ADDRESS
);
1512 ZERO(MV_PCI_ERR_ATTRIBUTE
);
1513 ZERO(MV_PCI_ERR_COMMAND
);
1517 static void mv6_reset_flash(struct mv_host_priv
*hpriv
, void __iomem
*mmio
)
1521 mv5_reset_flash(hpriv
, mmio
);
1523 tmp
= readl(mmio
+ MV_GPIO_PORT_CTL
);
1525 tmp
|= (1 << 5) | (1 << 6);
1526 writel(tmp
, mmio
+ MV_GPIO_PORT_CTL
);
1530 * mv6_reset_hc - Perform the 6xxx global soft reset
1531 * @mmio: base address of the HBA
1533 * This routine only applies to 6xxx parts.
1536 * Inherited from caller.
1538 static int mv6_reset_hc(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
1541 void __iomem
*reg
= mmio
+ PCI_MAIN_CMD_STS_OFS
;
1545 /* Following procedure defined in PCI "main command and status
1549 writel(t
| STOP_PCI_MASTER
, reg
);
1551 for (i
= 0; i
< 1000; i
++) {
1554 if (PCI_MASTER_EMPTY
& t
) {
1558 if (!(PCI_MASTER_EMPTY
& t
)) {
1559 printk(KERN_ERR DRV_NAME
": PCI master won't flush\n");
1567 writel(t
| GLOB_SFT_RST
, reg
);
1570 } while (!(GLOB_SFT_RST
& t
) && (i
-- > 0));
1572 if (!(GLOB_SFT_RST
& t
)) {
1573 printk(KERN_ERR DRV_NAME
": can't set global reset\n");
1578 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
1581 writel(t
& ~(GLOB_SFT_RST
| STOP_PCI_MASTER
), reg
);
1584 } while ((GLOB_SFT_RST
& t
) && (i
-- > 0));
1586 if (GLOB_SFT_RST
& t
) {
1587 printk(KERN_ERR DRV_NAME
": can't clear global reset\n");
1594 static void mv6_read_preamp(struct mv_host_priv
*hpriv
, int idx
,
1597 void __iomem
*port_mmio
;
1600 tmp
= readl(mmio
+ MV_RESET_CFG
);
1601 if ((tmp
& (1 << 0)) == 0) {
1602 hpriv
->signal
[idx
].amps
= 0x7 << 8;
1603 hpriv
->signal
[idx
].pre
= 0x1 << 5;
1607 port_mmio
= mv_port_base(mmio
, idx
);
1608 tmp
= readl(port_mmio
+ PHY_MODE2
);
1610 hpriv
->signal
[idx
].amps
= tmp
& 0x700; /* bits 10:8 */
1611 hpriv
->signal
[idx
].pre
= tmp
& 0xe0; /* bits 7:5 */
1614 static void mv6_enable_leds(struct mv_host_priv
*hpriv
, void __iomem
*mmio
)
1616 writel(0x00000060, mmio
+ MV_GPIO_PORT_CTL
);
1619 static void mv6_phy_errata(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
1622 void __iomem
*port_mmio
= mv_port_base(mmio
, port
);
1624 u32 hp_flags
= hpriv
->hp_flags
;
1626 hp_flags
& (MV_HP_ERRATA_60X1B2
| MV_HP_ERRATA_60X1C0
);
1628 hp_flags
& (MV_HP_ERRATA_60X1B2
| MV_HP_ERRATA_60X1C0
);
1631 if (fix_phy_mode2
) {
1632 m2
= readl(port_mmio
+ PHY_MODE2
);
1635 writel(m2
, port_mmio
+ PHY_MODE2
);
1639 m2
= readl(port_mmio
+ PHY_MODE2
);
1640 m2
&= ~((1 << 16) | (1 << 31));
1641 writel(m2
, port_mmio
+ PHY_MODE2
);
1646 /* who knows what this magic does */
1647 tmp
= readl(port_mmio
+ PHY_MODE3
);
1650 writel(tmp
, port_mmio
+ PHY_MODE3
);
1652 if (fix_phy_mode4
) {
1655 m4
= readl(port_mmio
+ PHY_MODE4
);
1657 if (hp_flags
& MV_HP_ERRATA_60X1B2
)
1658 tmp
= readl(port_mmio
+ 0x310);
1660 m4
= (m4
& ~(1 << 1)) | (1 << 0);
1662 writel(m4
, port_mmio
+ PHY_MODE4
);
1664 if (hp_flags
& MV_HP_ERRATA_60X1B2
)
1665 writel(tmp
, port_mmio
+ 0x310);
1668 /* Revert values of pre-emphasis and signal amps to the saved ones */
1669 m2
= readl(port_mmio
+ PHY_MODE2
);
1671 m2
&= ~MV_M2_PREAMP_MASK
;
1672 m2
|= hpriv
->signal
[port
].amps
;
1673 m2
|= hpriv
->signal
[port
].pre
;
1676 writel(m2
, port_mmio
+ PHY_MODE2
);
1679 static void mv_channel_reset(struct mv_host_priv
*hpriv
, void __iomem
*mmio
,
1680 unsigned int port_no
)
1682 void __iomem
*port_mmio
= mv_port_base(mmio
, port_no
);
1684 writelfl(ATA_RST
, port_mmio
+ EDMA_CMD_OFS
);
1686 if (IS_60XX(hpriv
)) {
1687 u32 ifctl
= readl(port_mmio
+ SATA_INTERFACE_CTL
);
1688 ifctl
|= (1 << 12) | (1 << 7);
1689 writelfl(ifctl
, port_mmio
+ SATA_INTERFACE_CTL
);
1692 udelay(25); /* allow reset propagation */
1694 /* Spec never mentions clearing the bit. Marvell's driver does
1695 * clear the bit, however.
1697 writelfl(0, port_mmio
+ EDMA_CMD_OFS
);
1699 hpriv
->ops
->phy_errata(hpriv
, mmio
, port_no
);
1705 static void mv_stop_and_reset(struct ata_port
*ap
)
1707 struct mv_host_priv
*hpriv
= ap
->host_set
->private_data
;
1708 void __iomem
*mmio
= ap
->host_set
->mmio_base
;
1712 mv_channel_reset(hpriv
, mmio
, ap
->port_no
);
1714 __mv_phy_reset(ap
, 0);
1717 static inline void __msleep(unsigned int msec
, int can_sleep
)
1726 * __mv_phy_reset - Perform eDMA reset followed by COMRESET
1727 * @ap: ATA channel to manipulate
1729 * Part of this is taken from __sata_phy_reset and modified to
1730 * not sleep since this routine gets called from interrupt level.
1733 * Inherited from caller. This is coded to safe to call at
1734 * interrupt level, i.e. it does not sleep.
1736 static void __mv_phy_reset(struct ata_port
*ap
, int can_sleep
)
1738 struct mv_port_priv
*pp
= ap
->private_data
;
1739 struct mv_host_priv
*hpriv
= ap
->host_set
->private_data
;
1740 void __iomem
*port_mmio
= mv_ap_base(ap
);
1741 struct ata_taskfile tf
;
1742 struct ata_device
*dev
= &ap
->device
[0];
1743 unsigned long timeout
;
1747 VPRINTK("ENTER, port %u, mmio 0x%p\n", ap
->port_no
, port_mmio
);
1749 DPRINTK("S-regs after ATA_RST: SStat 0x%08x SErr 0x%08x "
1750 "SCtrl 0x%08x\n", mv_scr_read(ap
, SCR_STATUS
),
1751 mv_scr_read(ap
, SCR_ERROR
), mv_scr_read(ap
, SCR_CONTROL
));
1753 /* Issue COMRESET via SControl */
1755 scr_write_flush(ap
, SCR_CONTROL
, 0x301);
1756 __msleep(1, can_sleep
);
1758 scr_write_flush(ap
, SCR_CONTROL
, 0x300);
1759 __msleep(20, can_sleep
);
1761 timeout
= jiffies
+ msecs_to_jiffies(200);
1763 sstatus
= scr_read(ap
, SCR_STATUS
) & 0x3;
1764 if ((sstatus
== 3) || (sstatus
== 0))
1767 __msleep(1, can_sleep
);
1768 } while (time_before(jiffies
, timeout
));
1770 /* work around errata */
1771 if (IS_60XX(hpriv
) &&
1772 (sstatus
!= 0x0) && (sstatus
!= 0x113) && (sstatus
!= 0x123) &&
1774 goto comreset_retry
;
1776 DPRINTK("S-regs after PHY wake: SStat 0x%08x SErr 0x%08x "
1777 "SCtrl 0x%08x\n", mv_scr_read(ap
, SCR_STATUS
),
1778 mv_scr_read(ap
, SCR_ERROR
), mv_scr_read(ap
, SCR_CONTROL
));
1780 if (sata_dev_present(ap
)) {
1783 printk(KERN_INFO
"ata%u: no device found (phy stat %08x)\n",
1784 ap
->id
, scr_read(ap
, SCR_STATUS
));
1785 ata_port_disable(ap
);
1788 ap
->cbl
= ATA_CBL_SATA
;
1790 /* even after SStatus reflects that device is ready,
1791 * it seems to take a while for link to be fully
1792 * established (and thus Status no longer 0x80/0x7F),
1793 * so we poll a bit for that, here.
1797 u8 drv_stat
= ata_check_status(ap
);
1798 if ((drv_stat
!= 0x80) && (drv_stat
!= 0x7f))
1800 __msleep(500, can_sleep
);
1805 tf
.lbah
= readb((void __iomem
*) ap
->ioaddr
.lbah_addr
);
1806 tf
.lbam
= readb((void __iomem
*) ap
->ioaddr
.lbam_addr
);
1807 tf
.lbal
= readb((void __iomem
*) ap
->ioaddr
.lbal_addr
);
1808 tf
.nsect
= readb((void __iomem
*) ap
->ioaddr
.nsect_addr
);
1810 dev
->class = ata_dev_classify(&tf
);
1811 if (!ata_dev_present(dev
)) {
1812 VPRINTK("Port disabled post-sig: No device present.\n");
1813 ata_port_disable(ap
);
1816 writelfl(0, port_mmio
+ EDMA_ERR_IRQ_CAUSE_OFS
);
1818 pp
->pp_flags
&= ~MV_PP_FLAG_EDMA_EN
;
1823 static void mv_phy_reset(struct ata_port
*ap
)
1825 __mv_phy_reset(ap
, 1);
1829 * mv_eng_timeout - Routine called by libata when SCSI times out I/O
1830 * @ap: ATA channel to manipulate
1832 * Intent is to clear all pending error conditions, reset the
1833 * chip/bus, fail the command, and move on.
1836 * This routine holds the host_set lock while failing the command.
1838 static void mv_eng_timeout(struct ata_port
*ap
)
1840 struct ata_queued_cmd
*qc
;
1841 unsigned long flags
;
1843 printk(KERN_ERR
"ata%u: Entering mv_eng_timeout\n",ap
->id
);
1844 DPRINTK("All regs @ start of eng_timeout\n");
1845 mv_dump_all_regs(ap
->host_set
->mmio_base
, ap
->port_no
,
1846 to_pci_dev(ap
->host_set
->dev
));
1848 qc
= ata_qc_from_tag(ap
, ap
->active_tag
);
1849 printk(KERN_ERR
"mmio_base %p ap %p qc %p scsi_cmnd %p &cmnd %p\n",
1850 ap
->host_set
->mmio_base
, ap
, qc
, qc
->scsicmd
,
1851 &qc
->scsicmd
->cmnd
);
1854 mv_stop_and_reset(ap
);
1857 printk(KERN_ERR
"ata%u: BUG: timeout without command\n",
1860 /* hack alert! We cannot use the supplied completion
1861 * function from inside the ->eh_strategy_handler() thread.
1862 * libata is the only user of ->eh_strategy_handler() in
1863 * any kernel, so the default scsi_done() assumes it is
1864 * not being called from the SCSI EH.
1866 spin_lock_irqsave(&ap
->host_set
->lock
, flags
);
1867 qc
->scsidone
= scsi_finish_command
;
1868 ata_qc_complete(qc
, AC_ERR_OTHER
);
1869 spin_unlock_irqrestore(&ap
->host_set
->lock
, flags
);
1874 * mv_port_init - Perform some early initialization on a single port.
1875 * @port: libata data structure storing shadow register addresses
1876 * @port_mmio: base address of the port
1878 * Initialize shadow register mmio addresses, clear outstanding
1879 * interrupts on the port, and unmask interrupts for the future
1880 * start of the port.
1883 * Inherited from caller.
1885 static void mv_port_init(struct ata_ioports
*port
, void __iomem
*port_mmio
)
1887 unsigned long shd_base
= (unsigned long) port_mmio
+ SHD_BLK_OFS
;
1890 /* PIO related setup
1892 port
->data_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_DATA
);
1894 port
->feature_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_ERR
);
1895 port
->nsect_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_NSECT
);
1896 port
->lbal_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_LBAL
);
1897 port
->lbam_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_LBAM
);
1898 port
->lbah_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_LBAH
);
1899 port
->device_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_DEVICE
);
1901 port
->command_addr
= shd_base
+ (sizeof(u32
) * ATA_REG_STATUS
);
1902 /* special case: control/altstatus doesn't have ATA_REG_ address */
1903 port
->altstatus_addr
= port
->ctl_addr
= shd_base
+ SHD_CTL_AST_OFS
;
1906 port
->cmd_addr
= port
->bmdma_addr
= port
->scr_addr
= 0;
1908 /* Clear any currently outstanding port interrupt conditions */
1909 serr_ofs
= mv_scr_offset(SCR_ERROR
);
1910 writelfl(readl(port_mmio
+ serr_ofs
), port_mmio
+ serr_ofs
);
1911 writelfl(0, port_mmio
+ EDMA_ERR_IRQ_CAUSE_OFS
);
1913 /* unmask all EDMA error interrupts */
1914 writelfl(~0, port_mmio
+ EDMA_ERR_IRQ_MASK_OFS
);
1916 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
1917 readl(port_mmio
+ EDMA_CFG_OFS
),
1918 readl(port_mmio
+ EDMA_ERR_IRQ_CAUSE_OFS
),
1919 readl(port_mmio
+ EDMA_ERR_IRQ_MASK_OFS
));
1922 static int mv_chip_id(struct pci_dev
*pdev
, struct mv_host_priv
*hpriv
,
1923 unsigned int board_idx
)
1926 u32 hp_flags
= hpriv
->hp_flags
;
1928 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &rev_id
);
1932 hpriv
->ops
= &mv5xxx_ops
;
1933 hp_flags
|= MV_HP_50XX
;
1937 hp_flags
|= MV_HP_ERRATA_50XXB0
;
1940 hp_flags
|= MV_HP_ERRATA_50XXB2
;
1943 dev_printk(KERN_WARNING
, &pdev
->dev
,
1944 "Applying 50XXB2 workarounds to unknown rev\n");
1945 hp_flags
|= MV_HP_ERRATA_50XXB2
;
1952 hpriv
->ops
= &mv5xxx_ops
;
1953 hp_flags
|= MV_HP_50XX
;
1957 hp_flags
|= MV_HP_ERRATA_50XXB0
;
1960 hp_flags
|= MV_HP_ERRATA_50XXB2
;
1963 dev_printk(KERN_WARNING
, &pdev
->dev
,
1964 "Applying B2 workarounds to unknown rev\n");
1965 hp_flags
|= MV_HP_ERRATA_50XXB2
;
1972 hpriv
->ops
= &mv6xxx_ops
;
1976 hp_flags
|= MV_HP_ERRATA_60X1B2
;
1979 hp_flags
|= MV_HP_ERRATA_60X1C0
;
1982 dev_printk(KERN_WARNING
, &pdev
->dev
,
1983 "Applying B2 workarounds to unknown rev\n");
1984 hp_flags
|= MV_HP_ERRATA_60X1B2
;
1990 printk(KERN_ERR DRV_NAME
": BUG: invalid board index %u\n", board_idx
);
1994 hpriv
->hp_flags
= hp_flags
;
2000 * mv_init_host - Perform some early initialization of the host.
2001 * @pdev: host PCI device
2002 * @probe_ent: early data struct representing the host
2004 * If possible, do an early global reset of the host. Then do
2005 * our port init and clear/unmask all/relevant host interrupts.
2008 * Inherited from caller.
2010 static int mv_init_host(struct pci_dev
*pdev
, struct ata_probe_ent
*probe_ent
,
2011 unsigned int board_idx
)
2013 int rc
= 0, n_hc
, port
, hc
;
2014 void __iomem
*mmio
= probe_ent
->mmio_base
;
2015 struct mv_host_priv
*hpriv
= probe_ent
->private_data
;
2017 /* global interrupt mask */
2018 writel(0, mmio
+ HC_MAIN_IRQ_MASK_OFS
);
2020 rc
= mv_chip_id(pdev
, hpriv
, board_idx
);
2024 n_hc
= mv_get_hc_count(probe_ent
->host_flags
);
2025 probe_ent
->n_ports
= MV_PORTS_PER_HC
* n_hc
;
2027 for (port
= 0; port
< probe_ent
->n_ports
; port
++)
2028 hpriv
->ops
->read_preamp(hpriv
, port
, mmio
);
2030 rc
= hpriv
->ops
->reset_hc(hpriv
, mmio
, n_hc
);
2034 hpriv
->ops
->reset_flash(hpriv
, mmio
);
2035 hpriv
->ops
->reset_bus(pdev
, mmio
);
2036 hpriv
->ops
->enable_leds(hpriv
, mmio
);
2038 for (port
= 0; port
< probe_ent
->n_ports
; port
++) {
2039 if (IS_60XX(hpriv
)) {
2040 void __iomem
*port_mmio
= mv_port_base(mmio
, port
);
2042 u32 ifctl
= readl(port_mmio
+ SATA_INTERFACE_CTL
);
2044 writelfl(ifctl
, port_mmio
+ SATA_INTERFACE_CTL
);
2047 hpriv
->ops
->phy_errata(hpriv
, mmio
, port
);
2050 for (port
= 0; port
< probe_ent
->n_ports
; port
++) {
2051 void __iomem
*port_mmio
= mv_port_base(mmio
, port
);
2052 mv_port_init(&probe_ent
->port
[port
], port_mmio
);
2055 for (hc
= 0; hc
< n_hc
; hc
++) {
2056 void __iomem
*hc_mmio
= mv_hc_base(mmio
, hc
);
2058 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
2059 "(before clear)=0x%08x\n", hc
,
2060 readl(hc_mmio
+ HC_CFG_OFS
),
2061 readl(hc_mmio
+ HC_IRQ_CAUSE_OFS
));
2063 /* Clear any currently outstanding hc interrupt conditions */
2064 writelfl(0, hc_mmio
+ HC_IRQ_CAUSE_OFS
);
2067 /* Clear any currently outstanding host interrupt conditions */
2068 writelfl(0, mmio
+ PCI_IRQ_CAUSE_OFS
);
2070 /* and unmask interrupt generation for host regs */
2071 writelfl(PCI_UNMASK_ALL_IRQS
, mmio
+ PCI_IRQ_MASK_OFS
);
2072 writelfl(~HC_MAIN_MASKED_IRQS
, mmio
+ HC_MAIN_IRQ_MASK_OFS
);
2074 VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x "
2075 "PCI int cause/mask=0x%08x/0x%08x\n",
2076 readl(mmio
+ HC_MAIN_IRQ_CAUSE_OFS
),
2077 readl(mmio
+ HC_MAIN_IRQ_MASK_OFS
),
2078 readl(mmio
+ PCI_IRQ_CAUSE_OFS
),
2079 readl(mmio
+ PCI_IRQ_MASK_OFS
));
2086 * mv_print_info - Dump key info to kernel log for perusal.
2087 * @probe_ent: early data struct representing the host
2089 * FIXME: complete this.
2092 * Inherited from caller.
2094 static void mv_print_info(struct ata_probe_ent
*probe_ent
)
2096 struct pci_dev
*pdev
= to_pci_dev(probe_ent
->dev
);
2097 struct mv_host_priv
*hpriv
= probe_ent
->private_data
;
2101 /* Use this to determine the HW stepping of the chip so we know
2102 * what errata to workaround
2104 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &rev_id
);
2106 pci_read_config_byte(pdev
, PCI_CLASS_DEVICE
, &scc
);
2109 else if (scc
== 0x01)
2114 dev_printk(KERN_INFO
, &pdev
->dev
,
2115 "%u slots %u ports %s mode IRQ via %s\n",
2116 (unsigned)MV_MAX_Q_DEPTH
, probe_ent
->n_ports
,
2117 scc_s
, (MV_HP_FLAG_MSI
& hpriv
->hp_flags
) ? "MSI" : "INTx");
2121 * mv_init_one - handle a positive probe of a Marvell host
2122 * @pdev: PCI device found
2123 * @ent: PCI device ID entry for the matched host
2126 * Inherited from caller.
2128 static int mv_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2130 static int printed_version
= 0;
2131 struct ata_probe_ent
*probe_ent
= NULL
;
2132 struct mv_host_priv
*hpriv
;
2133 unsigned int board_idx
= (unsigned int)ent
->driver_data
;
2134 void __iomem
*mmio_base
;
2135 int pci_dev_busy
= 0, rc
;
2137 if (!printed_version
++)
2138 dev_printk(KERN_INFO
, &pdev
->dev
, "version " DRV_VERSION
"\n");
2140 rc
= pci_enable_device(pdev
);
2145 rc
= pci_request_regions(pdev
, DRV_NAME
);
2151 probe_ent
= kmalloc(sizeof(*probe_ent
), GFP_KERNEL
);
2152 if (probe_ent
== NULL
) {
2154 goto err_out_regions
;
2157 memset(probe_ent
, 0, sizeof(*probe_ent
));
2158 probe_ent
->dev
= pci_dev_to_dev(pdev
);
2159 INIT_LIST_HEAD(&probe_ent
->node
);
2161 mmio_base
= pci_iomap(pdev
, MV_PRIMARY_BAR
, 0);
2162 if (mmio_base
== NULL
) {
2164 goto err_out_free_ent
;
2167 hpriv
= kmalloc(sizeof(*hpriv
), GFP_KERNEL
);
2170 goto err_out_iounmap
;
2172 memset(hpriv
, 0, sizeof(*hpriv
));
2174 probe_ent
->sht
= mv_port_info
[board_idx
].sht
;
2175 probe_ent
->host_flags
= mv_port_info
[board_idx
].host_flags
;
2176 probe_ent
->pio_mask
= mv_port_info
[board_idx
].pio_mask
;
2177 probe_ent
->udma_mask
= mv_port_info
[board_idx
].udma_mask
;
2178 probe_ent
->port_ops
= mv_port_info
[board_idx
].port_ops
;
2180 probe_ent
->irq
= pdev
->irq
;
2181 probe_ent
->irq_flags
= SA_SHIRQ
;
2182 probe_ent
->mmio_base
= mmio_base
;
2183 probe_ent
->private_data
= hpriv
;
2185 /* initialize adapter */
2186 rc
= mv_init_host(pdev
, probe_ent
, board_idx
);
2191 /* Enable interrupts */
2192 if (pci_enable_msi(pdev
) == 0) {
2193 hpriv
->hp_flags
|= MV_HP_FLAG_MSI
;
2198 mv_dump_pci_cfg(pdev
, 0x68);
2199 mv_print_info(probe_ent
);
2201 if (ata_device_add(probe_ent
) == 0) {
2202 rc
= -ENODEV
; /* No devices discovered */
2203 goto err_out_dev_add
;
2210 if (MV_HP_FLAG_MSI
& hpriv
->hp_flags
) {
2211 pci_disable_msi(pdev
);
2218 pci_iounmap(pdev
, mmio_base
);
2222 pci_release_regions(pdev
);
2224 if (!pci_dev_busy
) {
2225 pci_disable_device(pdev
);
2231 static int __init
mv_init(void)
2233 return pci_module_init(&mv_pci_driver
);
2236 static void __exit
mv_exit(void)
2238 pci_unregister_driver(&mv_pci_driver
);
2241 MODULE_AUTHOR("Brett Russ");
2242 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
2243 MODULE_LICENSE("GPL");
2244 MODULE_DEVICE_TABLE(pci
, mv_pci_tbl
);
2245 MODULE_VERSION(DRV_VERSION
);
2247 module_init(mv_init
);
2248 module_exit(mv_exit
);