2 * sata_via.c - VIA Serial ATA controllers
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
9 * Copyright 2003-2004 Jeff Garzik
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2, or (at your option)
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; see the file COPYING. If not, write to
24 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 * libata documentation is available via 'make {ps|pdf}docs',
28 * as Documentation/DocBook/libata.*
30 * Hardware documentation available under NDA.
34 * - VT6421 PATA support
38 #include <linux/kernel.h>
39 #include <linux/module.h>
40 #include <linux/pci.h>
41 #include <linux/init.h>
42 #include <linux/blkdev.h>
43 #include <linux/delay.h>
44 #include <linux/device.h>
45 #include <scsi/scsi_host.h>
46 #include <linux/libata.h>
49 #define DRV_NAME "sata_via"
50 #define DRV_VERSION "1.1"
58 SATA_CHAN_ENAB
= 0x40, /* SATA channel enable */
59 SATA_INT_GATE
= 0x41, /* SATA interrupt gating */
60 SATA_NATIVE_MODE
= 0x42, /* Native mode enable */
61 SATA_PATA_SHARING
= 0x49, /* PATA/SATA sharing func ctrl */
65 ALL_PORTS
= PORT0
| PORT1
,
68 NATIVE_MODE_ALL
= (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
70 SATA_EXT_PHY
= (1 << 6), /* 0==use PATA, 1==ext phy */
71 SATA_2DEV
= (1 << 5), /* SATA is master/slave */
74 static int svia_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
75 static u32
svia_scr_read (struct ata_port
*ap
, unsigned int sc_reg
);
76 static void svia_scr_write (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
);
78 static const struct pci_device_id svia_pci_tbl
[] = {
79 { 0x1106, 0x3149, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, vt6420
},
80 { 0x1106, 0x3249, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, vt6421
},
82 { } /* terminate list */
85 static struct pci_driver svia_pci_driver
= {
87 .id_table
= svia_pci_tbl
,
88 .probe
= svia_init_one
,
89 .remove
= ata_pci_remove_one
,
92 static struct scsi_host_template svia_sht
= {
93 .module
= THIS_MODULE
,
95 .ioctl
= ata_scsi_ioctl
,
96 .queuecommand
= ata_scsi_queuecmd
,
97 .eh_strategy_handler
= ata_scsi_error
,
98 .can_queue
= ATA_DEF_QUEUE
,
99 .this_id
= ATA_SHT_THIS_ID
,
100 .sg_tablesize
= LIBATA_MAX_PRD
,
101 .max_sectors
= ATA_MAX_SECTORS
,
102 .cmd_per_lun
= ATA_SHT_CMD_PER_LUN
,
103 .emulated
= ATA_SHT_EMULATED
,
104 .use_clustering
= ATA_SHT_USE_CLUSTERING
,
105 .proc_name
= DRV_NAME
,
106 .dma_boundary
= ATA_DMA_BOUNDARY
,
107 .slave_configure
= ata_scsi_slave_config
,
108 .bios_param
= ata_std_bios_param
,
112 static const struct ata_port_operations svia_sata_ops
= {
113 .port_disable
= ata_port_disable
,
115 .tf_load
= ata_tf_load
,
116 .tf_read
= ata_tf_read
,
117 .check_status
= ata_check_status
,
118 .exec_command
= ata_exec_command
,
119 .dev_select
= ata_std_dev_select
,
121 .phy_reset
= sata_phy_reset
,
123 .bmdma_setup
= ata_bmdma_setup
,
124 .bmdma_start
= ata_bmdma_start
,
125 .bmdma_stop
= ata_bmdma_stop
,
126 .bmdma_status
= ata_bmdma_status
,
128 .qc_prep
= ata_qc_prep
,
129 .qc_issue
= ata_qc_issue_prot
,
131 .eng_timeout
= ata_eng_timeout
,
133 .irq_handler
= ata_interrupt
,
134 .irq_clear
= ata_bmdma_irq_clear
,
136 .scr_read
= svia_scr_read
,
137 .scr_write
= svia_scr_write
,
139 .port_start
= ata_port_start
,
140 .port_stop
= ata_port_stop
,
141 .host_stop
= ata_host_stop
,
144 static struct ata_port_info svia_port_info
= {
146 .host_flags
= ATA_FLAG_SATA
| ATA_FLAG_SRST
| ATA_FLAG_NO_LEGACY
,
150 .port_ops
= &svia_sata_ops
,
153 MODULE_AUTHOR("Jeff Garzik");
154 MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
155 MODULE_LICENSE("GPL");
156 MODULE_DEVICE_TABLE(pci
, svia_pci_tbl
);
157 MODULE_VERSION(DRV_VERSION
);
159 static u32
svia_scr_read (struct ata_port
*ap
, unsigned int sc_reg
)
161 if (sc_reg
> SCR_CONTROL
)
163 return inl(ap
->ioaddr
.scr_addr
+ (4 * sc_reg
));
166 static void svia_scr_write (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
)
168 if (sc_reg
> SCR_CONTROL
)
170 outl(val
, ap
->ioaddr
.scr_addr
+ (4 * sc_reg
));
173 static const unsigned int svia_bar_sizes
[] = {
177 static const unsigned int vt6421_bar_sizes
[] = {
178 16, 16, 16, 16, 32, 128
181 static unsigned long svia_scr_addr(unsigned long addr
, unsigned int port
)
183 return addr
+ (port
* 128);
186 static unsigned long vt6421_scr_addr(unsigned long addr
, unsigned int port
)
188 return addr
+ (port
* 64);
191 static void vt6421_init_addrs(struct ata_probe_ent
*probe_ent
,
192 struct pci_dev
*pdev
,
195 unsigned long reg_addr
= pci_resource_start(pdev
, port
);
196 unsigned long bmdma_addr
= pci_resource_start(pdev
, 4) + (port
* 8);
197 unsigned long scr_addr
;
199 probe_ent
->port
[port
].cmd_addr
= reg_addr
;
200 probe_ent
->port
[port
].altstatus_addr
=
201 probe_ent
->port
[port
].ctl_addr
= (reg_addr
+ 8) | ATA_PCI_CTL_OFS
;
202 probe_ent
->port
[port
].bmdma_addr
= bmdma_addr
;
204 scr_addr
= vt6421_scr_addr(pci_resource_start(pdev
, 5), port
);
205 probe_ent
->port
[port
].scr_addr
= scr_addr
;
207 ata_std_ports(&probe_ent
->port
[port
]);
210 static struct ata_probe_ent
*vt6420_init_probe_ent(struct pci_dev
*pdev
)
212 struct ata_probe_ent
*probe_ent
;
213 struct ata_port_info
*ppi
= &svia_port_info
;
215 probe_ent
= ata_pci_init_native_mode(pdev
, &ppi
, ATA_PORT_PRIMARY
| ATA_PORT_SECONDARY
);
219 probe_ent
->port
[0].scr_addr
=
220 svia_scr_addr(pci_resource_start(pdev
, 5), 0);
221 probe_ent
->port
[1].scr_addr
=
222 svia_scr_addr(pci_resource_start(pdev
, 5), 1);
227 static struct ata_probe_ent
*vt6421_init_probe_ent(struct pci_dev
*pdev
)
229 struct ata_probe_ent
*probe_ent
;
232 probe_ent
= kmalloc(sizeof(*probe_ent
), GFP_KERNEL
);
236 memset(probe_ent
, 0, sizeof(*probe_ent
));
237 probe_ent
->dev
= pci_dev_to_dev(pdev
);
238 INIT_LIST_HEAD(&probe_ent
->node
);
240 probe_ent
->sht
= &svia_sht
;
241 probe_ent
->host_flags
= ATA_FLAG_SATA
| ATA_FLAG_SATA_RESET
|
243 probe_ent
->port_ops
= &svia_sata_ops
;
244 probe_ent
->n_ports
= N_PORTS
;
245 probe_ent
->irq
= pdev
->irq
;
246 probe_ent
->irq_flags
= SA_SHIRQ
;
247 probe_ent
->pio_mask
= 0x1f;
248 probe_ent
->mwdma_mask
= 0x07;
249 probe_ent
->udma_mask
= 0x7f;
251 for (i
= 0; i
< N_PORTS
; i
++)
252 vt6421_init_addrs(probe_ent
, pdev
, i
);
257 static void svia_configure(struct pci_dev
*pdev
)
261 pci_read_config_byte(pdev
, PCI_INTERRUPT_LINE
, &tmp8
);
262 dev_printk(KERN_INFO
, &pdev
->dev
, "routed to hard irq line %d\n",
263 (int) (tmp8
& 0xf0) == 0xf0 ? 0 : tmp8
& 0x0f);
265 /* make sure SATA channels are enabled */
266 pci_read_config_byte(pdev
, SATA_CHAN_ENAB
, &tmp8
);
267 if ((tmp8
& ALL_PORTS
) != ALL_PORTS
) {
268 dev_printk(KERN_DEBUG
, &pdev
->dev
,
269 "enabling SATA channels (0x%x)\n",
272 pci_write_config_byte(pdev
, SATA_CHAN_ENAB
, tmp8
);
275 /* make sure interrupts for each channel sent to us */
276 pci_read_config_byte(pdev
, SATA_INT_GATE
, &tmp8
);
277 if ((tmp8
& ALL_PORTS
) != ALL_PORTS
) {
278 dev_printk(KERN_DEBUG
, &pdev
->dev
,
279 "enabling SATA channel interrupts (0x%x)\n",
282 pci_write_config_byte(pdev
, SATA_INT_GATE
, tmp8
);
285 /* make sure native mode is enabled */
286 pci_read_config_byte(pdev
, SATA_NATIVE_MODE
, &tmp8
);
287 if ((tmp8
& NATIVE_MODE_ALL
) != NATIVE_MODE_ALL
) {
288 dev_printk(KERN_DEBUG
, &pdev
->dev
,
289 "enabling SATA channel native mode (0x%x)\n",
291 tmp8
|= NATIVE_MODE_ALL
;
292 pci_write_config_byte(pdev
, SATA_NATIVE_MODE
, tmp8
);
296 static int svia_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
298 static int printed_version
;
301 struct ata_probe_ent
*probe_ent
;
302 int board_id
= (int) ent
->driver_data
;
303 const int *bar_sizes
;
304 int pci_dev_busy
= 0;
307 if (!printed_version
++)
308 dev_printk(KERN_DEBUG
, &pdev
->dev
, "version " DRV_VERSION
"\n");
310 rc
= pci_enable_device(pdev
);
314 rc
= pci_request_regions(pdev
, DRV_NAME
);
320 if (board_id
== vt6420
) {
321 pci_read_config_byte(pdev
, SATA_PATA_SHARING
, &tmp8
);
322 if (tmp8
& SATA_2DEV
) {
323 dev_printk(KERN_ERR
, &pdev
->dev
,
324 "SATA master/slave not supported (0x%x)\n",
327 goto err_out_regions
;
330 bar_sizes
= &svia_bar_sizes
[0];
332 bar_sizes
= &vt6421_bar_sizes
[0];
335 for (i
= 0; i
< ARRAY_SIZE(svia_bar_sizes
); i
++)
336 if ((pci_resource_start(pdev
, i
) == 0) ||
337 (pci_resource_len(pdev
, i
) < bar_sizes
[i
])) {
338 dev_printk(KERN_ERR
, &pdev
->dev
,
339 "invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
341 pci_resource_start(pdev
, i
),
342 pci_resource_len(pdev
, i
));
344 goto err_out_regions
;
347 rc
= pci_set_dma_mask(pdev
, ATA_DMA_MASK
);
349 goto err_out_regions
;
350 rc
= pci_set_consistent_dma_mask(pdev
, ATA_DMA_MASK
);
352 goto err_out_regions
;
354 if (board_id
== vt6420
)
355 probe_ent
= vt6420_init_probe_ent(pdev
);
357 probe_ent
= vt6421_init_probe_ent(pdev
);
360 dev_printk(KERN_ERR
, &pdev
->dev
, "out of memory\n");
362 goto err_out_regions
;
365 svia_configure(pdev
);
367 pci_set_master(pdev
);
369 /* FIXME: check ata_device_add return value */
370 ata_device_add(probe_ent
);
376 pci_release_regions(pdev
);
379 pci_disable_device(pdev
);
383 static int __init
svia_init(void)
385 return pci_module_init(&svia_pci_driver
);
388 static void __exit
svia_exit(void)
390 pci_unregister_driver(&svia_pci_driver
);
393 module_init(svia_init
);
394 module_exit(svia_exit
);