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 "1.2"
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 .can_queue
= ATA_DEF_QUEUE
,
98 .this_id
= ATA_SHT_THIS_ID
,
99 .sg_tablesize
= LIBATA_MAX_PRD
,
100 .cmd_per_lun
= ATA_SHT_CMD_PER_LUN
,
101 .emulated
= ATA_SHT_EMULATED
,
102 .use_clustering
= ATA_SHT_USE_CLUSTERING
,
103 .proc_name
= DRV_NAME
,
104 .dma_boundary
= ATA_DMA_BOUNDARY
,
105 .slave_configure
= ata_scsi_slave_config
,
106 .bios_param
= ata_std_bios_param
,
109 static const struct ata_port_operations svia_sata_ops
= {
110 .port_disable
= ata_port_disable
,
112 .tf_load
= ata_tf_load
,
113 .tf_read
= ata_tf_read
,
114 .check_status
= ata_check_status
,
115 .exec_command
= ata_exec_command
,
116 .dev_select
= ata_std_dev_select
,
118 .phy_reset
= sata_phy_reset
,
120 .bmdma_setup
= ata_bmdma_setup
,
121 .bmdma_start
= ata_bmdma_start
,
122 .bmdma_stop
= ata_bmdma_stop
,
123 .bmdma_status
= ata_bmdma_status
,
125 .qc_prep
= ata_qc_prep
,
126 .qc_issue
= ata_qc_issue_prot
,
127 .data_xfer
= ata_pio_data_xfer
,
129 .eng_timeout
= ata_eng_timeout
,
131 .irq_handler
= ata_interrupt
,
132 .irq_clear
= ata_bmdma_irq_clear
,
134 .scr_read
= svia_scr_read
,
135 .scr_write
= svia_scr_write
,
137 .port_start
= ata_port_start
,
138 .port_stop
= ata_port_stop
,
139 .host_stop
= ata_host_stop
,
142 static struct ata_port_info svia_port_info
= {
144 .host_flags
= ATA_FLAG_SATA
| ATA_FLAG_SRST
| ATA_FLAG_NO_LEGACY
,
148 .port_ops
= &svia_sata_ops
,
151 MODULE_AUTHOR("Jeff Garzik");
152 MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
153 MODULE_LICENSE("GPL");
154 MODULE_DEVICE_TABLE(pci
, svia_pci_tbl
);
155 MODULE_VERSION(DRV_VERSION
);
157 static u32
svia_scr_read (struct ata_port
*ap
, unsigned int sc_reg
)
159 if (sc_reg
> SCR_CONTROL
)
161 return inl(ap
->ioaddr
.scr_addr
+ (4 * sc_reg
));
164 static void svia_scr_write (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
)
166 if (sc_reg
> SCR_CONTROL
)
168 outl(val
, ap
->ioaddr
.scr_addr
+ (4 * sc_reg
));
171 static const unsigned int svia_bar_sizes
[] = {
175 static const unsigned int vt6421_bar_sizes
[] = {
176 16, 16, 16, 16, 32, 128
179 static unsigned long svia_scr_addr(unsigned long addr
, unsigned int port
)
181 return addr
+ (port
* 128);
184 static unsigned long vt6421_scr_addr(unsigned long addr
, unsigned int port
)
186 return addr
+ (port
* 64);
189 static void vt6421_init_addrs(struct ata_probe_ent
*probe_ent
,
190 struct pci_dev
*pdev
,
193 unsigned long reg_addr
= pci_resource_start(pdev
, port
);
194 unsigned long bmdma_addr
= pci_resource_start(pdev
, 4) + (port
* 8);
195 unsigned long scr_addr
;
197 probe_ent
->port
[port
].cmd_addr
= reg_addr
;
198 probe_ent
->port
[port
].altstatus_addr
=
199 probe_ent
->port
[port
].ctl_addr
= (reg_addr
+ 8) | ATA_PCI_CTL_OFS
;
200 probe_ent
->port
[port
].bmdma_addr
= bmdma_addr
;
202 scr_addr
= vt6421_scr_addr(pci_resource_start(pdev
, 5), port
);
203 probe_ent
->port
[port
].scr_addr
= scr_addr
;
205 ata_std_ports(&probe_ent
->port
[port
]);
208 static struct ata_probe_ent
*vt6420_init_probe_ent(struct pci_dev
*pdev
)
210 struct ata_probe_ent
*probe_ent
;
211 struct ata_port_info
*ppi
= &svia_port_info
;
213 probe_ent
= ata_pci_init_native_mode(pdev
, &ppi
, ATA_PORT_PRIMARY
| ATA_PORT_SECONDARY
);
217 probe_ent
->port
[0].scr_addr
=
218 svia_scr_addr(pci_resource_start(pdev
, 5), 0);
219 probe_ent
->port
[1].scr_addr
=
220 svia_scr_addr(pci_resource_start(pdev
, 5), 1);
225 static struct ata_probe_ent
*vt6421_init_probe_ent(struct pci_dev
*pdev
)
227 struct ata_probe_ent
*probe_ent
;
230 probe_ent
= kmalloc(sizeof(*probe_ent
), GFP_KERNEL
);
234 memset(probe_ent
, 0, sizeof(*probe_ent
));
235 probe_ent
->dev
= pci_dev_to_dev(pdev
);
236 INIT_LIST_HEAD(&probe_ent
->node
);
238 probe_ent
->sht
= &svia_sht
;
239 probe_ent
->host_flags
= ATA_FLAG_SATA
| ATA_FLAG_SATA_RESET
|
241 probe_ent
->port_ops
= &svia_sata_ops
;
242 probe_ent
->n_ports
= N_PORTS
;
243 probe_ent
->irq
= pdev
->irq
;
244 probe_ent
->irq_flags
= SA_SHIRQ
;
245 probe_ent
->pio_mask
= 0x1f;
246 probe_ent
->mwdma_mask
= 0x07;
247 probe_ent
->udma_mask
= 0x7f;
249 for (i
= 0; i
< N_PORTS
; i
++)
250 vt6421_init_addrs(probe_ent
, pdev
, i
);
255 static void svia_configure(struct pci_dev
*pdev
)
259 pci_read_config_byte(pdev
, PCI_INTERRUPT_LINE
, &tmp8
);
260 dev_printk(KERN_INFO
, &pdev
->dev
, "routed to hard irq line %d\n",
261 (int) (tmp8
& 0xf0) == 0xf0 ? 0 : tmp8
& 0x0f);
263 /* make sure SATA channels are enabled */
264 pci_read_config_byte(pdev
, SATA_CHAN_ENAB
, &tmp8
);
265 if ((tmp8
& ALL_PORTS
) != ALL_PORTS
) {
266 dev_printk(KERN_DEBUG
, &pdev
->dev
,
267 "enabling SATA channels (0x%x)\n",
270 pci_write_config_byte(pdev
, SATA_CHAN_ENAB
, tmp8
);
273 /* make sure interrupts for each channel sent to us */
274 pci_read_config_byte(pdev
, SATA_INT_GATE
, &tmp8
);
275 if ((tmp8
& ALL_PORTS
) != ALL_PORTS
) {
276 dev_printk(KERN_DEBUG
, &pdev
->dev
,
277 "enabling SATA channel interrupts (0x%x)\n",
280 pci_write_config_byte(pdev
, SATA_INT_GATE
, tmp8
);
283 /* make sure native mode is enabled */
284 pci_read_config_byte(pdev
, SATA_NATIVE_MODE
, &tmp8
);
285 if ((tmp8
& NATIVE_MODE_ALL
) != NATIVE_MODE_ALL
) {
286 dev_printk(KERN_DEBUG
, &pdev
->dev
,
287 "enabling SATA channel native mode (0x%x)\n",
289 tmp8
|= NATIVE_MODE_ALL
;
290 pci_write_config_byte(pdev
, SATA_NATIVE_MODE
, tmp8
);
294 static int svia_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
296 static int printed_version
;
299 struct ata_probe_ent
*probe_ent
;
300 int board_id
= (int) ent
->driver_data
;
301 const int *bar_sizes
;
302 int pci_dev_busy
= 0;
305 if (!printed_version
++)
306 dev_printk(KERN_DEBUG
, &pdev
->dev
, "version " DRV_VERSION
"\n");
308 rc
= pci_enable_device(pdev
);
312 rc
= pci_request_regions(pdev
, DRV_NAME
);
318 if (board_id
== vt6420
) {
319 pci_read_config_byte(pdev
, SATA_PATA_SHARING
, &tmp8
);
320 if (tmp8
& SATA_2DEV
) {
321 dev_printk(KERN_ERR
, &pdev
->dev
,
322 "SATA master/slave not supported (0x%x)\n",
325 goto err_out_regions
;
328 bar_sizes
= &svia_bar_sizes
[0];
330 bar_sizes
= &vt6421_bar_sizes
[0];
333 for (i
= 0; i
< ARRAY_SIZE(svia_bar_sizes
); i
++)
334 if ((pci_resource_start(pdev
, i
) == 0) ||
335 (pci_resource_len(pdev
, i
) < bar_sizes
[i
])) {
336 dev_printk(KERN_ERR
, &pdev
->dev
,
337 "invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
339 pci_resource_start(pdev
, i
),
340 pci_resource_len(pdev
, i
));
342 goto err_out_regions
;
345 rc
= pci_set_dma_mask(pdev
, ATA_DMA_MASK
);
347 goto err_out_regions
;
348 rc
= pci_set_consistent_dma_mask(pdev
, ATA_DMA_MASK
);
350 goto err_out_regions
;
352 if (board_id
== vt6420
)
353 probe_ent
= vt6420_init_probe_ent(pdev
);
355 probe_ent
= vt6421_init_probe_ent(pdev
);
358 dev_printk(KERN_ERR
, &pdev
->dev
, "out of memory\n");
360 goto err_out_regions
;
363 svia_configure(pdev
);
365 pci_set_master(pdev
);
367 /* FIXME: check ata_device_add return value */
368 ata_device_add(probe_ent
);
374 pci_release_regions(pdev
);
377 pci_disable_device(pdev
);
381 static int __init
svia_init(void)
383 return pci_module_init(&svia_pci_driver
);
386 static void __exit
svia_exit(void)
388 pci_unregister_driver(&svia_pci_driver
);
391 module_init(svia_init
);
392 module_exit(svia_exit
);