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/config.h>
34 #include <linux/kernel.h>
35 #include <linux/module.h>
36 #include <linux/pci.h>
37 #include <linux/init.h>
38 #include <linux/blkdev.h>
39 #include <linux/delay.h>
40 #include <linux/interrupt.h>
41 #include <linux/device.h>
43 #include <scsi/scsi_host.h>
44 #include <linux/libata.h>
46 #define DRV_NAME "sata_sis"
47 #define DRV_VERSION "0.5"
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 struct pci_device_id sis_pci_tbl[] = {
72 { PCI_VENDOR_ID_SI, 0x180, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sis_180 },
73 { PCI_VENDOR_ID_SI, 0x181, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sis_180 },
74 { PCI_VENDOR_ID_SI, 0x182, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sis_180 },
75 { } /* terminate list */
79 static struct pci_driver sis_pci_driver = {
81 .id_table = sis_pci_tbl,
82 .probe = sis_init_one,
83 .remove = ata_pci_remove_one,
86 static Scsi_Host_Template sis_sht = {
87 .module = THIS_MODULE,
89 .ioctl = ata_scsi_ioctl,
90 .queuecommand = ata_scsi_queuecmd,
91 .eh_strategy_handler = ata_scsi_error,
92 .can_queue = ATA_DEF_QUEUE,
93 .this_id = ATA_SHT_THIS_ID,
94 .sg_tablesize = ATA_MAX_PRD,
95 .max_sectors = ATA_MAX_SECTORS,
96 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
97 .emulated = ATA_SHT_EMULATED,
98 .use_clustering = ATA_SHT_USE_CLUSTERING,
99 .proc_name = DRV_NAME,
100 .dma_boundary = ATA_DMA_BOUNDARY,
101 .slave_configure = ata_scsi_slave_config,
102 .bios_param = ata_std_bios_param,
106 static const struct ata_port_operations sis_ops = {
107 .port_disable = ata_port_disable,
108 .tf_load = ata_tf_load,
109 .tf_read = ata_tf_read,
110 .check_status = ata_check_status,
111 .exec_command = ata_exec_command,
112 .dev_select = ata_std_dev_select,
113 .phy_reset = sata_phy_reset,
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 .eng_timeout = ata_eng_timeout,
121 .irq_handler = ata_interrupt,
122 .irq_clear = ata_bmdma_irq_clear,
123 .scr_read = sis_scr_read,
124 .scr_write = sis_scr_write,
125 .port_start = ata_port_start,
126 .port_stop = ata_port_stop,
127 .host_stop = ata_host_stop,
130 static struct ata_port_info sis_port_info = {
132 .host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
137 .port_ops = &sis_ops,
141 MODULE_AUTHOR("Uwe Koziolek");
142 MODULE_DESCRIPTION("low-level driver for Silicon Integratad Systems SATA controller");
143 MODULE_LICENSE("GPL");
144 MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
145 MODULE_VERSION(DRV_VERSION);
147 static unsigned int get_scr_cfg_addr(unsigned int port_no, unsigned int sc_reg, int device)
149 unsigned int addr = SIS_SCR_BASE + (4 * sc_reg);
153 addr += SIS182_SATA1_OFS;
155 addr += SIS180_SATA1_OFS;
161 static u32 sis_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
163 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
164 unsigned int cfg_addr = get_scr_cfg_addr(ap->port_no, sc_reg, pdev->device);
168 if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */
171 pci_read_config_byte(pdev, SIS_PMR, &pmr);
173 pci_read_config_dword(pdev, cfg_addr, &val);
175 if ((pdev->device == 0x182) || (pmr & SIS_PMR_COMBINED))
176 pci_read_config_dword(pdev, cfg_addr+0x10, &val2);
181 static void sis_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
183 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
184 unsigned int cfg_addr = get_scr_cfg_addr(ap->port_no, scr, pdev->device);
187 if (scr == SCR_ERROR) /* doesn't exist in PCI cfg space */
190 pci_read_config_byte(pdev, SIS_PMR, &pmr);
192 pci_write_config_dword(pdev, cfg_addr, val);
194 if ((pdev->device == 0x182) || (pmr & SIS_PMR_COMBINED))
195 pci_write_config_dword(pdev, cfg_addr+0x10, val);
198 static u32 sis_scr_read (struct ata_port *ap, unsigned int sc_reg)
200 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
204 if (sc_reg > SCR_CONTROL)
207 if (ap->flags & SIS_FLAG_CFGSCR)
208 return sis_scr_cfg_read(ap, sc_reg);
210 pci_read_config_byte(pdev, SIS_PMR, &pmr);
212 val = inl(ap->ioaddr.scr_addr + (sc_reg * 4));
214 if ((pdev->device == 0x182) || (pmr & SIS_PMR_COMBINED))
215 val2 = inl(ap->ioaddr.scr_addr + (sc_reg * 4) + 0x10);
220 static void sis_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
222 struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
225 if (sc_reg > SCR_CONTROL)
228 pci_read_config_byte(pdev, SIS_PMR, &pmr);
230 if (ap->flags & SIS_FLAG_CFGSCR)
231 sis_scr_cfg_write(ap, sc_reg, val);
233 outl(val, ap->ioaddr.scr_addr + (sc_reg * 4));
234 if ((pdev->device == 0x182) || (pmr & SIS_PMR_COMBINED))
235 outl(val, ap->ioaddr.scr_addr + (sc_reg * 4)+0x10);
239 static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
241 static int printed_version;
242 struct ata_probe_ent *probe_ent = NULL;
245 struct ata_port_info *ppi;
246 int pci_dev_busy = 0;
250 if (!printed_version++)
251 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
253 rc = pci_enable_device(pdev);
257 rc = pci_request_regions(pdev, DRV_NAME);
263 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
265 goto err_out_regions;
266 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
268 goto err_out_regions;
270 ppi = &sis_port_info;
271 probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
274 goto err_out_regions;
277 /* check and see if the SCRs are in IO space or PCI cfg space */
278 pci_read_config_dword(pdev, SIS_GENCTL, &genctl);
279 if ((genctl & GENCTL_IOMAPPED_SCR) == 0)
280 probe_ent->host_flags |= SIS_FLAG_CFGSCR;
282 /* if hardware thinks SCRs are in IO space, but there are
283 * no IO resources assigned, change to PCI cfg space.
285 if ((!(probe_ent->host_flags & SIS_FLAG_CFGSCR)) &&
286 ((pci_resource_start(pdev, SIS_SCR_PCI_BAR) == 0) ||
287 (pci_resource_len(pdev, SIS_SCR_PCI_BAR) < 128))) {
288 genctl &= ~GENCTL_IOMAPPED_SCR;
289 pci_write_config_dword(pdev, SIS_GENCTL, genctl);
290 probe_ent->host_flags |= SIS_FLAG_CFGSCR;
293 pci_read_config_byte(pdev, SIS_PMR, &pmr);
294 if (ent->device != 0x182) {
295 if ((pmr & SIS_PMR_COMBINED) == 0) {
296 dev_printk(KERN_INFO, &pdev->dev,
297 "Detected SiS 180/181 chipset in SATA mode\n");
301 dev_printk(KERN_INFO, &pdev->dev,
302 "Detected SiS 180/181 chipset in combined mode\n");
307 dev_printk(KERN_INFO, &pdev->dev, "Detected SiS 182 chipset\n");
311 if (!(probe_ent->host_flags & SIS_FLAG_CFGSCR)) {
312 probe_ent->port[0].scr_addr =
313 pci_resource_start(pdev, SIS_SCR_PCI_BAR);
314 probe_ent->port[1].scr_addr =
315 pci_resource_start(pdev, SIS_SCR_PCI_BAR) + port2_start;
318 pci_set_master(pdev);
321 /* FIXME: check ata_device_add return value */
322 ata_device_add(probe_ent);
328 pci_release_regions(pdev);
332 pci_disable_device(pdev);
337 static int __init sis_init(void)
339 return pci_module_init(&sis_pci_driver);
342 static void __exit sis_exit(void)
344 pci_unregister_driver(&sis_pci_driver);
347 module_init(sis_init);
348 module_exit(sis_exit);