2 * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
3 * Author: Jason Jin<Jason.jin@freescale.com>
4 * Zhang Wei<wei.zhang@freescale.com>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * with the reference on libata and ahci drvier in kernel
31 #include <asm/processor.h>
32 #include <asm/errno.h>
37 #include <linux/ctype.h>
40 struct ahci_probe_ent
*probe_ent
= NULL
;
41 hd_driveid_t
*ataid
[AHCI_MAX_PORTS
];
43 #define writel_with_flush(a,b) do { writel(a,b); readl(b); } while (0)
46 static inline u32
ahci_port_base(u32 base
, u32 port
)
48 return base
+ 0x100 + (port
* 0x80);
52 static void ahci_setup_port(struct ahci_ioports
*port
, unsigned long base
,
53 unsigned int port_idx
)
55 base
= ahci_port_base(base
, port_idx
);
57 port
->cmd_addr
= base
;
58 port
->scr_addr
= base
+ PORT_SCR
;
62 #define msleep(a) udelay(a * 1000)
63 #define ssleep(a) msleep(a * 1000)
65 static int waiting_for_cmd_completed(volatile u8
*offset
,
72 for (i
= 0; ((status
= readl(offset
)) & sign
) && i
< timeout_msec
; i
++)
75 return (i
< timeout_msec
) ? 0 : -1;
79 static int ahci_host_init(struct ahci_probe_ent
*probe_ent
)
81 pci_dev_t pdev
= probe_ent
->dev
;
82 volatile u8
*mmio
= (volatile u8
*)probe_ent
->mmio_base
;
86 volatile u8
*port_mmio
;
87 unsigned short vendor
;
89 cap_save
= readl(mmio
+ HOST_CAP
);
90 cap_save
&= ((1 << 28) | (1 << 17));
91 cap_save
|= (1 << 27);
93 /* global controller reset */
94 tmp
= readl(mmio
+ HOST_CTL
);
95 if ((tmp
& HOST_RESET
) == 0)
96 writel_with_flush(tmp
| HOST_RESET
, mmio
+ HOST_CTL
);
98 /* reset must complete within 1 second, or
99 * the hardware should be considered fried.
103 tmp
= readl(mmio
+ HOST_CTL
);
104 if (tmp
& HOST_RESET
) {
105 debug("controller reset failed (0x%x)\n", tmp
);
109 writel_with_flush(HOST_AHCI_EN
, mmio
+ HOST_CTL
);
110 writel(cap_save
, mmio
+ HOST_CAP
);
111 writel_with_flush(0xf, mmio
+ HOST_PORTS_IMPL
);
113 pci_read_config_word(pdev
, PCI_VENDOR_ID
, &vendor
);
115 if (vendor
== PCI_VENDOR_ID_INTEL
) {
117 pci_read_config_word(pdev
, 0x92, &tmp16
);
119 pci_write_config_word(pdev
, 0x92, tmp16
);
122 probe_ent
->cap
= readl(mmio
+ HOST_CAP
);
123 probe_ent
->port_map
= readl(mmio
+ HOST_PORTS_IMPL
);
124 probe_ent
->n_ports
= (probe_ent
->cap
& 0x1f) + 1;
126 debug("cap 0x%x port_map 0x%x n_ports %d\n",
127 probe_ent
->cap
, probe_ent
->port_map
, probe_ent
->n_ports
);
129 for (i
= 0; i
< probe_ent
->n_ports
; i
++) {
130 probe_ent
->port
[i
].port_mmio
= ahci_port_base((u32
) mmio
, i
);
131 port_mmio
= (u8
*) probe_ent
->port
[i
].port_mmio
;
132 ahci_setup_port(&probe_ent
->port
[i
], (unsigned long)mmio
, i
);
134 /* make sure port is not active */
135 tmp
= readl(port_mmio
+ PORT_CMD
);
136 if (tmp
& (PORT_CMD_LIST_ON
| PORT_CMD_FIS_ON
|
137 PORT_CMD_FIS_RX
| PORT_CMD_START
)) {
138 tmp
&= ~(PORT_CMD_LIST_ON
| PORT_CMD_FIS_ON
|
139 PORT_CMD_FIS_RX
| PORT_CMD_START
);
140 writel_with_flush(tmp
, port_mmio
+ PORT_CMD
);
142 /* spec says 500 msecs for each bit, so
143 * this is slightly incorrect.
148 writel(PORT_CMD_SPIN_UP
, port_mmio
+ PORT_CMD
);
153 tmp
= readl(port_mmio
+ PORT_SCR_STAT
);
154 if ((tmp
& 0xf) == 0x3)
159 tmp
= readl(port_mmio
+ PORT_SCR_ERR
);
160 debug("PORT_SCR_ERR 0x%x\n", tmp
);
161 writel(tmp
, port_mmio
+ PORT_SCR_ERR
);
163 /* ack any pending irq events for this port */
164 tmp
= readl(port_mmio
+ PORT_IRQ_STAT
);
165 debug("PORT_IRQ_STAT 0x%x\n", tmp
);
167 writel(tmp
, port_mmio
+ PORT_IRQ_STAT
);
169 writel(1 << i
, mmio
+ HOST_IRQ_STAT
);
171 /* set irq mask (enables interrupts) */
172 writel(DEF_PORT_IRQ
, port_mmio
+ PORT_IRQ_MASK
);
174 /*register linkup ports */
175 tmp
= readl(port_mmio
+ PORT_SCR_STAT
);
176 debug("Port %d status: 0x%x\n", i
, tmp
);
177 if ((tmp
& 0xf) == 0x03)
178 probe_ent
->link_port_map
|= (0x01 << i
);
181 tmp
= readl(mmio
+ HOST_CTL
);
182 debug("HOST_CTL 0x%x\n", tmp
);
183 writel(tmp
| HOST_IRQ_EN
, mmio
+ HOST_CTL
);
184 tmp
= readl(mmio
+ HOST_CTL
);
185 debug("HOST_CTL 0x%x\n", tmp
);
187 pci_read_config_word(pdev
, PCI_COMMAND
, &tmp16
);
188 tmp
|= PCI_COMMAND_MASTER
;
189 pci_write_config_word(pdev
, PCI_COMMAND
, tmp16
);
195 static void ahci_print_info(struct ahci_probe_ent
*probe_ent
)
197 pci_dev_t pdev
= probe_ent
->dev
;
198 volatile u8
*mmio
= (volatile u8
*)probe_ent
->mmio_base
;
199 u32 vers
, cap
, impl
, speed
;
204 vers
= readl(mmio
+ HOST_VERSION
);
205 cap
= probe_ent
->cap
;
206 impl
= probe_ent
->port_map
;
208 speed
= (cap
>> 20) & 0xf;
216 pci_read_config_word(pdev
, 0x0a, &cc
);
219 else if (cc
== 0x0106)
221 else if (cc
== 0x0104)
226 printf("AHCI %02x%02x.%02x%02x "
227 "%u slots %u ports %s Gbps 0x%x impl %s mode\n",
232 ((cap
>> 8) & 0x1f) + 1, (cap
& 0x1f) + 1, speed_s
, impl
, scc_s
);
237 cap
& (1 << 31) ? "64bit " : "",
238 cap
& (1 << 30) ? "ncq " : "",
239 cap
& (1 << 28) ? "ilck " : "",
240 cap
& (1 << 27) ? "stag " : "",
241 cap
& (1 << 26) ? "pm " : "",
242 cap
& (1 << 25) ? "led " : "",
243 cap
& (1 << 24) ? "clo " : "",
244 cap
& (1 << 19) ? "nz " : "",
245 cap
& (1 << 18) ? "only " : "",
246 cap
& (1 << 17) ? "pmp " : "",
247 cap
& (1 << 15) ? "pio " : "",
248 cap
& (1 << 14) ? "slum " : "",
249 cap
& (1 << 13) ? "part " : "");
252 static int ahci_init_one(pci_dev_t pdev
)
258 memset((void *)ataid
, 0, sizeof(hd_driveid_t
*) * AHCI_MAX_PORTS
);
260 probe_ent
= malloc(sizeof(struct ahci_probe_ent
));
261 memset(probe_ent
, 0, sizeof(struct ahci_probe_ent
));
262 probe_ent
->dev
= pdev
;
264 pci_read_config_dword(pdev
, AHCI_PCI_BAR
, &iobase
);
267 probe_ent
->host_flags
= ATA_FLAG_SATA
272 probe_ent
->pio_mask
= 0x1f;
273 probe_ent
->udma_mask
= 0x7f; /*Fixme,assume to support UDMA6 */
275 probe_ent
->mmio_base
= iobase
;
278 * JMicron-specific fixup:
279 * make sure we're in AHCI mode
281 pci_read_config_word(pdev
, PCI_VENDOR_ID
, &vendor
);
282 if (vendor
== 0x197b)
283 pci_write_config_byte(pdev
, 0x41, 0xa1);
285 /* initialize adapter */
286 rc
= ahci_host_init(probe_ent
);
290 ahci_print_info(probe_ent
);
299 #define MAX_DATA_BYTE_COUNT (4*1024*1024)
301 static int ahci_fill_sg(u8 port
, unsigned char *buf
, int buf_len
)
303 struct ahci_ioports
*pp
= &(probe_ent
->port
[port
]);
304 struct ahci_sg
*ahci_sg
= pp
->cmd_tbl_sg
;
308 sg_count
= ((buf_len
- 1) / MAX_DATA_BYTE_COUNT
) + 1;
309 if (sg_count
> AHCI_MAX_SG
) {
310 printf("Error:Too much sg!\n");
314 for (i
= 0; i
< sg_count
; i
++) {
316 cpu_to_le32((u32
) buf
+ i
* MAX_DATA_BYTE_COUNT
);
317 ahci_sg
->addr_hi
= 0;
318 ahci_sg
->flags_size
= cpu_to_le32(0x3fffff &
319 (buf_len
< MAX_DATA_BYTE_COUNT
321 : (MAX_DATA_BYTE_COUNT
- 1)));
323 buf_len
-= MAX_DATA_BYTE_COUNT
;
330 static void ahci_fill_cmd_slot(struct ahci_ioports
*pp
, u32 opts
)
332 pp
->cmd_slot
->opts
= cpu_to_le32(opts
);
333 pp
->cmd_slot
->status
= 0;
334 pp
->cmd_slot
->tbl_addr
= cpu_to_le32(pp
->cmd_tbl
& 0xffffffff);
335 pp
->cmd_slot
->tbl_addr_hi
= 0;
339 static void ahci_set_feature(u8 port
)
341 struct ahci_ioports
*pp
= &(probe_ent
->port
[port
]);
342 volatile u8
*port_mmio
= (volatile u8
*)pp
->port_mmio
;
343 u32 cmd_fis_len
= 5; /* five dwords */
350 fis
[2] = ATA_CMD_SETF
;
351 fis
[3] = SETFEATURES_XFER
;
352 fis
[12] = __ilog2(probe_ent
->udma_mask
+ 1) + 0x40 - 0x01;
354 memcpy((unsigned char *)pp
->cmd_tbl
, fis
, 20);
355 ahci_fill_cmd_slot(pp
, cmd_fis_len
);
356 writel(1, port_mmio
+ PORT_CMD_ISSUE
);
357 readl(port_mmio
+ PORT_CMD_ISSUE
);
359 if (waiting_for_cmd_completed(port_mmio
+ PORT_CMD_ISSUE
, 150, 0x1)) {
360 printf("set feature error!\n");
365 static int ahci_port_start(u8 port
)
367 struct ahci_ioports
*pp
= &(probe_ent
->port
[port
]);
368 volatile u8
*port_mmio
= (volatile u8
*)pp
->port_mmio
;
372 debug("Enter start port: %d\n", port
);
373 port_status
= readl(port_mmio
+ PORT_SCR_STAT
);
374 debug("Port %d status: %x\n", port
, port_status
);
375 if ((port_status
& 0xf) != 0x03) {
376 printf("No Link on this port!\n");
380 mem
= (u32
) malloc(AHCI_PORT_PRIV_DMA_SZ
+ 2048);
383 printf("No mem for table!\n");
387 mem
= (mem
+ 0x800) & (~0x7ff); /* Aligned to 2048-bytes */
388 memset((u8
*) mem
, 0, AHCI_PORT_PRIV_DMA_SZ
);
391 * First item in chunk of DMA memory: 32-slot command table,
392 * 32 bytes each in size
394 pp
->cmd_slot
= (struct ahci_cmd_hdr
*)mem
;
395 debug("cmd_slot = 0x%x\n", pp
->cmd_slot
);
396 mem
+= (AHCI_CMD_SLOT_SZ
+ 224);
399 * Second item: Received-FIS area
402 mem
+= AHCI_RX_FIS_SZ
;
405 * Third item: data area for storing a single command
406 * and its scatter-gather table
409 debug("cmd_tbl_dma = 0x%x\n", pp
->cmd_tbl
);
411 mem
+= AHCI_CMD_TBL_HDR
;
412 pp
->cmd_tbl_sg
= (struct ahci_sg
*)mem
;
414 writel_with_flush((u32
) pp
->cmd_slot
, port_mmio
+ PORT_LST_ADDR
);
416 writel_with_flush(pp
->rx_fis
, port_mmio
+ PORT_FIS_ADDR
);
418 writel_with_flush(PORT_CMD_ICC_ACTIVE
| PORT_CMD_FIS_RX
|
419 PORT_CMD_POWER_ON
| PORT_CMD_SPIN_UP
|
420 PORT_CMD_START
, port_mmio
+ PORT_CMD
);
422 debug("Exit start port %d\n", port
);
428 static int get_ahci_device_data(u8 port
, u8
*fis
, int fis_len
, u8
*buf
,
432 struct ahci_ioports
*pp
= &(probe_ent
->port
[port
]);
433 volatile u8
*port_mmio
= (volatile u8
*)pp
->port_mmio
;
438 debug("Enter get_ahci_device_data: for port %d\n", port
);
440 if (port
> probe_ent
->n_ports
) {
441 printf("Invaild port number %d\n", port
);
445 port_status
= readl(port_mmio
+ PORT_SCR_STAT
);
446 if ((port_status
& 0xf) != 0x03) {
447 debug("No Link on port %d!\n", port
);
451 memcpy((unsigned char *)pp
->cmd_tbl
, fis
, fis_len
);
453 sg_count
= ahci_fill_sg(port
, buf
, buf_len
);
454 opts
= (fis_len
>> 2) | (sg_count
<< 16);
455 ahci_fill_cmd_slot(pp
, opts
);
457 writel_with_flush(1, port_mmio
+ PORT_CMD_ISSUE
);
459 if (waiting_for_cmd_completed(port_mmio
+ PORT_CMD_ISSUE
, 150, 0x1)) {
460 printf("timeout exit!\n");
463 debug("get_ahci_device_data: %d byte transferred.\n",
464 pp
->cmd_slot
->status
);
470 static char *ata_id_strcpy(u16
*target
, u16
*src
, int len
)
473 for (i
= 0; i
< len
/ 2; i
++)
474 target
[i
] = le16_to_cpu(src
[i
]);
475 return (char *)target
;
479 static void dump_ataid(hd_driveid_t
*ataid
)
481 debug("(49)ataid->capability = 0x%x\n", ataid
->capability
);
482 debug("(53)ataid->field_valid =0x%x\n", ataid
->field_valid
);
483 debug("(63)ataid->dma_mword = 0x%x\n", ataid
->dma_mword
);
484 debug("(64)ataid->eide_pio_modes = 0x%x\n", ataid
->eide_pio_modes
);
485 debug("(75)ataid->queue_depth = 0x%x\n", ataid
->queue_depth
);
486 debug("(80)ataid->major_rev_num = 0x%x\n", ataid
->major_rev_num
);
487 debug("(81)ataid->minor_rev_num = 0x%x\n", ataid
->minor_rev_num
);
488 debug("(82)ataid->command_set_1 = 0x%x\n", ataid
->command_set_1
);
489 debug("(83)ataid->command_set_2 = 0x%x\n", ataid
->command_set_2
);
490 debug("(84)ataid->cfsse = 0x%x\n", ataid
->cfsse
);
491 debug("(85)ataid->cfs_enable_1 = 0x%x\n", ataid
->cfs_enable_1
);
492 debug("(86)ataid->cfs_enable_2 = 0x%x\n", ataid
->cfs_enable_2
);
493 debug("(87)ataid->csf_default = 0x%x\n", ataid
->csf_default
);
494 debug("(88)ataid->dma_ultra = 0x%x\n", ataid
->dma_ultra
);
495 debug("(93)ataid->hw_config = 0x%x\n", ataid
->hw_config
);
500 * SCSI INQUIRY command operation.
502 static int ata_scsiop_inquiry(ccb
*pccb
)
507 0x5, /* claim SPC-3 version compatibility */
515 /* Clean ccb data buffer */
516 memset(pccb
->pdata
, 0, pccb
->datalen
);
518 memcpy(pccb
->pdata
, hdr
, sizeof(hdr
));
520 if (pccb
->datalen
<= 35)
524 /* Construct the FIS */
525 fis
[0] = 0x27; /* Host to device FIS. */
526 fis
[1] = 1 << 7; /* Command FIS. */
527 fis
[2] = ATA_CMD_IDENT
; /* Command byte. */
529 /* Read id from sata */
531 if (!(tmpid
= malloc(sizeof(hd_driveid_t
))))
534 if (get_ahci_device_data(port
, (u8
*) & fis
, 20,
535 tmpid
, sizeof(hd_driveid_t
))) {
536 debug("scsi_ahci: SCSI inquiry command failure.\n");
542 ataid
[port
] = (hd_driveid_t
*) tmpid
;
544 memcpy(&pccb
->pdata
[8], "ATA ", 8);
545 ata_id_strcpy((u16
*) &pccb
->pdata
[16], (u16
*)ataid
[port
]->model
, 16);
546 ata_id_strcpy((u16
*) &pccb
->pdata
[32], (u16
*)ataid
[port
]->fw_rev
, 4);
548 dump_ataid(ataid
[port
]);
554 * SCSI READ10 command operation.
556 static int ata_scsiop_read10(ccb
* pccb
)
562 lba
= (((u64
) pccb
->cmd
[2]) << 24) | (((u64
) pccb
->cmd
[3]) << 16)
563 | (((u64
) pccb
->cmd
[4]) << 8) | ((u64
) pccb
->cmd
[5]);
564 len
= (((u32
) pccb
->cmd
[7]) << 8) | ((u32
) pccb
->cmd
[8]);
566 /* For 10-byte and 16-byte SCSI R/W commands, transfer
567 * length 0 means transfer 0 block of data.
568 * However, for ATA R/W commands, sector count 0 means
569 * 256 or 65536 sectors, not 0 sectors as in SCSI.
571 * WARNING: one or two older ATA drives treat 0 as 0...
577 /* Construct the FIS */
578 fis
[0] = 0x27; /* Host to device FIS. */
579 fis
[1] = 1 << 7; /* Command FIS. */
580 fis
[2] = ATA_CMD_RD_DMA
; /* Command byte. */
582 /* LBA address, only support LBA28 in this driver */
583 fis
[4] = pccb
->cmd
[5];
584 fis
[5] = pccb
->cmd
[4];
585 fis
[6] = pccb
->cmd
[3];
586 fis
[7] = (pccb
->cmd
[2] & 0x0f) | 0xe0;
589 fis
[12] = pccb
->cmd
[8];
590 fis
[13] = pccb
->cmd
[7];
593 if (get_ahci_device_data(pccb
->target
, (u8
*) & fis
, 20,
594 pccb
->pdata
, pccb
->datalen
)) {
595 debug("scsi_ahci: SCSI READ10 command failure.\n");
604 * SCSI READ CAPACITY10 command operation.
606 static int ata_scsiop_read_capacity10(ccb
*pccb
)
610 if (!ataid
[pccb
->target
]) {
611 printf("scsi_ahci: SCSI READ CAPACITY10 command failure. "
613 "\tPlease run SCSI commmand INQUIRY firstly!\n");
619 *(u32
*) buf
= le32_to_cpu(ataid
[pccb
->target
]->lba_capacity
);
624 memcpy(pccb
->pdata
, buf
, 8);
631 * SCSI TEST UNIT READY command operation.
633 static int ata_scsiop_test_unit_ready(ccb
*pccb
)
635 return (ataid
[pccb
->target
]) ? 0 : -EPERM
;
639 int scsi_exec(ccb
*pccb
)
643 switch (pccb
->cmd
[0]) {
645 ret
= ata_scsiop_read10(pccb
);
648 ret
= ata_scsiop_read_capacity10(pccb
);
651 ret
= ata_scsiop_test_unit_ready(pccb
);
654 ret
= ata_scsiop_inquiry(pccb
);
657 printf("Unsupport SCSI command 0x%02x\n", pccb
->cmd
[0]);
662 debug("SCSI command 0x%02x ret errno %d\n", pccb
->cmd
[0], ret
);
670 void scsi_low_level_init(int busdevfunc
)
675 ahci_init_one(busdevfunc
);
677 linkmap
= probe_ent
->link_port_map
;
679 for (i
= 0; i
< CONFIG_SYS_SCSI_MAX_SCSI_ID
; i
++) {
680 if (((linkmap
>> i
) & 0x01)) {
681 if (ahci_port_start((u8
) i
)) {
682 printf("Can not start port %d\n", i
);
685 ahci_set_feature((u8
) i
);
691 void scsi_bus_reset(void)
697 void scsi_print_error(ccb
* pccb
)
699 /*The ahci error info can be read in the ahci driver*/