2 * sata_sis.c - Silicon Integrated Systems SATA
4 * Maintained by: Uwe Koziolek
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2004 Uwe Koziolek
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
29 * Hardware documentation available under NDA.
33 #include <linux/kernel.h>
34 #include <linux/module.h>
35 #include <linux/pci.h>
36 #include <linux/init.h>
37 #include <linux/blkdev.h>
38 #include <linux/delay.h>
39 #include <linux/interrupt.h>
40 #include <linux/device.h>
41 #include <scsi/scsi_host.h>
42 #include <linux/libata.h>
45 #undef DRV_NAME /* already defined in libata.h, for libata-core */
46 #define DRV_NAME "sata_sis"
47 #define DRV_VERSION "0.7"
53 /* PCI configuration registers */
54 SIS_GENCTL
= 0x54, /* IDE General Control register */
55 SIS_SCR_BASE
= 0xc0, /* sata0 phy SCR registers */
56 SIS180_SATA1_OFS
= 0x10, /* offset from sata0->sata1 phy regs */
57 SIS182_SATA1_OFS
= 0x20, /* offset from sata0->sata1 phy regs */
58 SIS_PMR
= 0x90, /* port mapping register */
59 SIS_PMR_COMBINED
= 0x30,
62 SIS_FLAG_CFGSCR
= (1 << 30), /* host flag: SCRs via PCI cfg */
64 GENCTL_IOMAPPED_SCR
= (1 << 26), /* if set, SCRs are in IO space */
67 static int sis_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
68 static u32
sis_scr_read (struct ata_port
*ap
, unsigned int sc_reg
);
69 static void sis_scr_write (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
);
71 static const struct pci_device_id sis_pci_tbl
[] = {
72 { PCI_VDEVICE(SI
, 0x0180), sis_180
}, /* SiS 964/180 */
73 { PCI_VDEVICE(SI
, 0x0181), sis_180
}, /* SiS 964/180 */
74 { PCI_VDEVICE(SI
, 0x0182), sis_180
}, /* SiS 965/965L */
75 { PCI_VDEVICE(SI
, 0x0183), sis_180
}, /* SiS 965/965L */
76 { PCI_VDEVICE(SI
, 0x1182), sis_180
}, /* SiS 966/966L */
77 { PCI_VDEVICE(SI
, 0x1183), sis_180
}, /* SiS 966/966L */
79 { } /* terminate list */
82 static struct pci_driver sis_pci_driver
= {
84 .id_table
= sis_pci_tbl
,
85 .probe
= sis_init_one
,
86 .remove
= ata_pci_remove_one
,
89 static struct scsi_host_template sis_sht
= {
90 .module
= THIS_MODULE
,
92 .ioctl
= ata_scsi_ioctl
,
93 .queuecommand
= ata_scsi_queuecmd
,
94 .can_queue
= ATA_DEF_QUEUE
,
95 .this_id
= ATA_SHT_THIS_ID
,
96 .sg_tablesize
= ATA_MAX_PRD
,
97 .cmd_per_lun
= ATA_SHT_CMD_PER_LUN
,
98 .emulated
= ATA_SHT_EMULATED
,
99 .use_clustering
= ATA_SHT_USE_CLUSTERING
,
100 .proc_name
= DRV_NAME
,
101 .dma_boundary
= ATA_DMA_BOUNDARY
,
102 .slave_configure
= ata_scsi_slave_config
,
103 .slave_destroy
= ata_scsi_slave_destroy
,
104 .bios_param
= ata_std_bios_param
,
107 static const struct ata_port_operations sis_ops
= {
108 .port_disable
= ata_port_disable
,
109 .tf_load
= ata_tf_load
,
110 .tf_read
= ata_tf_read
,
111 .check_status
= ata_check_status
,
112 .exec_command
= ata_exec_command
,
113 .dev_select
= ata_std_dev_select
,
114 .bmdma_setup
= ata_bmdma_setup
,
115 .bmdma_start
= ata_bmdma_start
,
116 .bmdma_stop
= ata_bmdma_stop
,
117 .bmdma_status
= ata_bmdma_status
,
118 .qc_prep
= ata_qc_prep
,
119 .qc_issue
= ata_qc_issue_prot
,
120 .data_xfer
= ata_data_xfer
,
121 .freeze
= ata_bmdma_freeze
,
122 .thaw
= ata_bmdma_thaw
,
123 .error_handler
= ata_bmdma_error_handler
,
124 .post_internal_cmd
= ata_bmdma_post_internal_cmd
,
125 .irq_handler
= ata_interrupt
,
126 .irq_clear
= ata_bmdma_irq_clear
,
127 .irq_on
= ata_irq_on
,
128 .irq_ack
= ata_irq_ack
,
129 .scr_read
= sis_scr_read
,
130 .scr_write
= sis_scr_write
,
131 .port_start
= ata_port_start
,
134 static struct ata_port_info sis_port_info
= {
136 .flags
= ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
,
140 .port_ops
= &sis_ops
,
143 MODULE_AUTHOR("Uwe Koziolek");
144 MODULE_DESCRIPTION("low-level driver for Silicon Integratad Systems SATA controller");
145 MODULE_LICENSE("GPL");
146 MODULE_DEVICE_TABLE(pci
, sis_pci_tbl
);
147 MODULE_VERSION(DRV_VERSION
);
149 static unsigned int get_scr_cfg_addr(struct ata_port
*ap
, unsigned int sc_reg
)
151 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
152 unsigned int addr
= SIS_SCR_BASE
+ (4 * sc_reg
);
156 switch (pdev
->device
) {
159 pci_read_config_byte(pdev
, SIS_PMR
, &pmr
);
160 if ((pmr
& SIS_PMR_COMBINED
) == 0)
161 addr
+= SIS180_SATA1_OFS
;
168 addr
+= SIS182_SATA1_OFS
;
175 static u32
sis_scr_cfg_read (struct ata_port
*ap
, unsigned int sc_reg
)
177 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
178 unsigned int cfg_addr
= get_scr_cfg_addr(ap
, sc_reg
);
182 if (sc_reg
== SCR_ERROR
) /* doesn't exist in PCI cfg space */
185 pci_read_config_byte(pdev
, SIS_PMR
, &pmr
);
187 pci_read_config_dword(pdev
, cfg_addr
, &val
);
189 if ((pdev
->device
== 0x0182) || (pdev
->device
== 0x0183) || (pdev
->device
== 0x1182) ||
190 (pdev
->device
== 0x1183) || (pmr
& SIS_PMR_COMBINED
))
191 pci_read_config_dword(pdev
, cfg_addr
+0x10, &val2
);
193 return (val
|val2
) & 0xfffffffb; /* avoid problems with powerdowned ports */
196 static void sis_scr_cfg_write (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
)
198 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
199 unsigned int cfg_addr
= get_scr_cfg_addr(ap
, sc_reg
);
202 if (sc_reg
== SCR_ERROR
) /* doesn't exist in PCI cfg space */
205 pci_read_config_byte(pdev
, SIS_PMR
, &pmr
);
207 pci_write_config_dword(pdev
, cfg_addr
, val
);
209 if ((pdev
->device
== 0x0182) || (pdev
->device
== 0x0183) || (pdev
->device
== 0x1182) ||
210 (pdev
->device
== 0x1183) || (pmr
& SIS_PMR_COMBINED
))
211 pci_write_config_dword(pdev
, cfg_addr
+0x10, val
);
214 static u32
sis_scr_read (struct ata_port
*ap
, unsigned int sc_reg
)
216 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
220 if (sc_reg
> SCR_CONTROL
)
223 if (ap
->flags
& SIS_FLAG_CFGSCR
)
224 return sis_scr_cfg_read(ap
, sc_reg
);
226 pci_read_config_byte(pdev
, SIS_PMR
, &pmr
);
228 val
= ioread32(ap
->ioaddr
.scr_addr
+ (sc_reg
* 4));
230 if ((pdev
->device
== 0x0182) || (pdev
->device
== 0x0183) || (pdev
->device
== 0x1182) ||
231 (pdev
->device
== 0x1183) || (pmr
& SIS_PMR_COMBINED
))
232 val2
= ioread32(ap
->ioaddr
.scr_addr
+ (sc_reg
* 4) + 0x10);
234 return (val
| val2
) & 0xfffffffb;
237 static void sis_scr_write (struct ata_port
*ap
, unsigned int sc_reg
, u32 val
)
239 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
242 if (sc_reg
> SCR_CONTROL
)
245 pci_read_config_byte(pdev
, SIS_PMR
, &pmr
);
247 if (ap
->flags
& SIS_FLAG_CFGSCR
)
248 sis_scr_cfg_write(ap
, sc_reg
, val
);
250 iowrite32(val
, ap
->ioaddr
.scr_addr
+ (sc_reg
* 4));
251 if ((pdev
->device
== 0x0182) || (pdev
->device
== 0x0183) || (pdev
->device
== 0x1182) ||
252 (pdev
->device
== 0x1183) || (pmr
& SIS_PMR_COMBINED
))
253 iowrite32(val
, ap
->ioaddr
.scr_addr
+ (sc_reg
* 4)+0x10);
257 static int sis_init_one (struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
259 static int printed_version
;
260 struct ata_probe_ent
*probe_ent
= NULL
;
263 struct ata_port_info pi
= sis_port_info
, *ppi
[2] = { &pi
, &pi
};
265 u8 port2_start
= 0x20;
267 if (!printed_version
++)
268 dev_printk(KERN_INFO
, &pdev
->dev
, "version " DRV_VERSION
"\n");
270 rc
= pcim_enable_device(pdev
);
274 rc
= pci_request_regions(pdev
, DRV_NAME
);
276 pcim_pin_device(pdev
);
280 rc
= pci_set_dma_mask(pdev
, ATA_DMA_MASK
);
283 rc
= pci_set_consistent_dma_mask(pdev
, ATA_DMA_MASK
);
287 /* check and see if the SCRs are in IO space or PCI cfg space */
288 pci_read_config_dword(pdev
, SIS_GENCTL
, &genctl
);
289 if ((genctl
& GENCTL_IOMAPPED_SCR
) == 0)
290 pi
.flags
|= SIS_FLAG_CFGSCR
;
292 /* if hardware thinks SCRs are in IO space, but there are
293 * no IO resources assigned, change to PCI cfg space.
295 if ((!(pi
.flags
& SIS_FLAG_CFGSCR
)) &&
296 ((pci_resource_start(pdev
, SIS_SCR_PCI_BAR
) == 0) ||
297 (pci_resource_len(pdev
, SIS_SCR_PCI_BAR
) < 128))) {
298 genctl
&= ~GENCTL_IOMAPPED_SCR
;
299 pci_write_config_dword(pdev
, SIS_GENCTL
, genctl
);
300 pi
.flags
|= SIS_FLAG_CFGSCR
;
303 pci_read_config_byte(pdev
, SIS_PMR
, &pmr
);
304 switch (ent
->device
) {
308 /* The PATA-handling is provided by pata_sis */
309 switch (pmr
& 0x30) {
311 ppi
[1] = &sis_info133
;
315 ppi
[0] = &sis_info133
;
318 if ((pmr
& SIS_PMR_COMBINED
) == 0) {
319 dev_printk(KERN_INFO
, &pdev
->dev
,
320 "Detected SiS 180/181/964 chipset in SATA mode\n");
323 dev_printk(KERN_INFO
, &pdev
->dev
,
324 "Detected SiS 180/181 chipset in combined mode\n");
326 pi
.flags
|= ATA_FLAG_SLAVE_POSS
;
332 pci_read_config_dword ( pdev
, 0x6C, &val
);
333 if (val
& (1L << 31)) {
334 dev_printk(KERN_INFO
, &pdev
->dev
, "Detected SiS 182/965 chipset\n");
335 pi
.flags
|= ATA_FLAG_SLAVE_POSS
;
337 dev_printk(KERN_INFO
, &pdev
->dev
, "Detected SiS 182/965L chipset\n");
343 pci_read_config_dword(pdev
, 0x64, &val
);
344 if (val
& 0x10000000) {
345 dev_printk(KERN_INFO
, &pdev
->dev
, "Detected SiS 1182/1183/966L SATA controller\n");
347 dev_printk(KERN_INFO
, &pdev
->dev
, "Detected SiS 1182/1183/966 SATA controller\n");
348 pi
.flags
|= ATA_FLAG_SLAVE_POSS
;
353 probe_ent
= ata_pci_init_native_mode(pdev
, ppi
, ATA_PORT_PRIMARY
| ATA_PORT_SECONDARY
);
357 if (!(probe_ent
->port_flags
& SIS_FLAG_CFGSCR
)) {
360 mmio
= pcim_iomap(pdev
, SIS_SCR_PCI_BAR
, 0);
364 probe_ent
->port
[0].scr_addr
= mmio
;
365 probe_ent
->port
[1].scr_addr
= mmio
+ port2_start
;
368 pci_set_master(pdev
);
371 if (!ata_device_add(probe_ent
))
374 devm_kfree(&pdev
->dev
, probe_ent
);
379 static int __init
sis_init(void)
381 return pci_register_driver(&sis_pci_driver
);
384 static void __exit
sis_exit(void)
386 pci_unregister_driver(&sis_pci_driver
);
389 module_init(sis_init
);
390 module_exit(sis_exit
);