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
11 The contents of this file are subject to the Open
12 Software License version 1.1 that can be found at
13 http://www.opensource.org/licenses/osl-1.1.txt and is included herein
16 Alternatively, the contents of this file may be used under the terms
17 of the GNU General Public License version 2 (the "GPL") as distributed
18 in the kernel source COPYING file, in which case the provisions of
19 the GPL are applicable instead of the above. If you wish to allow
20 the use of your version of this file only under the terms of the
21 GPL and not to allow others to use your version of this file under
22 the OSL, indicate your decision by deleting the provisions above and
23 replace them with the notice and other provisions required by the GPL.
24 If you do not delete the provisions above, a recipient may use your
25 version of this file under either the OSL or the GPL.
27 ----------------------------------------------------------------------
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>
41 #include <scsi/scsi_host.h>
42 #include <linux/libata.h>
45 #define DRV_NAME "sata_via"
46 #define DRV_VERSION "1.1"
54 SATA_CHAN_ENAB = 0x40, /* SATA channel enable */
55 SATA_INT_GATE = 0x41, /* SATA interrupt gating */
56 SATA_NATIVE_MODE = 0x42, /* Native mode enable */
57 SATA_PATA_SHARING = 0x49, /* PATA/SATA sharing func ctrl */
61 ALL_PORTS = PORT0 | PORT1,
64 NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
66 SATA_EXT_PHY = (1 << 6), /* 0==use PATA, 1==ext phy */
67 SATA_2DEV = (1 << 5), /* SATA is master/slave */
70 static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
71 static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
72 static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
74 static struct pci_device_id svia_pci_tbl[] = {
75 { 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
76 { 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },
78 { } /* terminate list */
81 static struct pci_driver svia_pci_driver = {
83 .id_table = svia_pci_tbl,
84 .probe = svia_init_one,
85 .remove = ata_pci_remove_one,
88 static Scsi_Host_Template svia_sht = {
89 .module = THIS_MODULE,
91 .ioctl = ata_scsi_ioctl,
92 .queuecommand = ata_scsi_queuecmd,
93 .eh_strategy_handler = ata_scsi_error,
94 .can_queue = ATA_DEF_QUEUE,
95 .this_id = ATA_SHT_THIS_ID,
96 .sg_tablesize = LIBATA_MAX_PRD,
97 .max_sectors = ATA_MAX_SECTORS,
98 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
99 .emulated = ATA_SHT_EMULATED,
100 .use_clustering = ATA_SHT_USE_CLUSTERING,
101 .proc_name = DRV_NAME,
102 .dma_boundary = ATA_DMA_BOUNDARY,
103 .slave_configure = ata_scsi_slave_config,
104 .bios_param = ata_std_bios_param,
108 static struct ata_port_operations svia_sata_ops = {
109 .port_disable = ata_port_disable,
111 .tf_load = ata_tf_load,
112 .tf_read = ata_tf_read,
113 .check_status = ata_check_status,
114 .exec_command = ata_exec_command,
115 .dev_select = ata_std_dev_select,
117 .phy_reset = sata_phy_reset,
119 .bmdma_setup = ata_bmdma_setup,
120 .bmdma_start = ata_bmdma_start,
121 .bmdma_stop = ata_bmdma_stop,
122 .bmdma_status = ata_bmdma_status,
124 .qc_prep = ata_qc_prep,
125 .qc_issue = ata_qc_issue_prot,
127 .eng_timeout = ata_eng_timeout,
129 .irq_handler = ata_interrupt,
130 .irq_clear = ata_bmdma_irq_clear,
132 .scr_read = svia_scr_read,
133 .scr_write = svia_scr_write,
135 .port_start = ata_port_start,
136 .port_stop = ata_port_stop,
137 .host_stop = ata_host_stop,
140 static struct ata_port_info svia_port_info = {
142 .host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST | ATA_FLAG_NO_LEGACY,
146 .port_ops = &svia_sata_ops,
149 MODULE_AUTHOR("Jeff Garzik");
150 MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
151 MODULE_LICENSE("GPL");
152 MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
153 MODULE_VERSION(DRV_VERSION);
155 static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg)
157 if (sc_reg > SCR_CONTROL)
159 return inl(ap->ioaddr.scr_addr + (4 * sc_reg));
162 static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
164 if (sc_reg > SCR_CONTROL)
166 outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
169 static const unsigned int svia_bar_sizes[] = {
173 static const unsigned int vt6421_bar_sizes[] = {
174 16, 16, 16, 16, 32, 128
177 static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
179 return addr + (port * 128);
182 static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
184 return addr + (port * 64);
187 static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
188 struct pci_dev *pdev,
191 unsigned long reg_addr = pci_resource_start(pdev, port);
192 unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
193 unsigned long scr_addr;
195 probe_ent->port[port].cmd_addr = reg_addr;
196 probe_ent->port[port].altstatus_addr =
197 probe_ent->port[port].ctl_addr = (reg_addr + 8) | ATA_PCI_CTL_OFS;
198 probe_ent->port[port].bmdma_addr = bmdma_addr;
200 scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
201 probe_ent->port[port].scr_addr = scr_addr;
203 ata_std_ports(&probe_ent->port[port]);
206 static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
208 struct ata_probe_ent *probe_ent;
209 struct ata_port_info *ppi = &svia_port_info;
211 probe_ent = ata_pci_init_native_mode(pdev, &ppi);
215 probe_ent->port[0].scr_addr =
216 svia_scr_addr(pci_resource_start(pdev, 5), 0);
217 probe_ent->port[1].scr_addr =
218 svia_scr_addr(pci_resource_start(pdev, 5), 1);
223 static struct ata_probe_ent *vt6421_init_probe_ent(struct pci_dev *pdev)
225 struct ata_probe_ent *probe_ent;
228 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
232 memset(probe_ent, 0, sizeof(*probe_ent));
233 probe_ent->dev = pci_dev_to_dev(pdev);
234 INIT_LIST_HEAD(&probe_ent->node);
236 probe_ent->sht = &svia_sht;
237 probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
239 probe_ent->port_ops = &svia_sata_ops;
240 probe_ent->n_ports = N_PORTS;
241 probe_ent->irq = pdev->irq;
242 probe_ent->irq_flags = SA_SHIRQ;
243 probe_ent->pio_mask = 0x1f;
244 probe_ent->mwdma_mask = 0x07;
245 probe_ent->udma_mask = 0x7f;
247 for (i = 0; i < N_PORTS; i++)
248 vt6421_init_addrs(probe_ent, pdev, i);
253 static void svia_configure(struct pci_dev *pdev)
257 pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
258 printk(KERN_INFO DRV_NAME "(%s): routed to hard irq line %d\n",
260 (int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
262 /* make sure SATA channels are enabled */
263 pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
264 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
265 printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channels (0x%x)\n",
266 pci_name(pdev), (int) tmp8);
268 pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
271 /* make sure interrupts for each channel sent to us */
272 pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
273 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
274 printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channel interrupts (0x%x)\n",
275 pci_name(pdev), (int) tmp8);
277 pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
280 /* make sure native mode is enabled */
281 pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
282 if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
283 printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channel native mode (0x%x)\n",
284 pci_name(pdev), (int) tmp8);
285 tmp8 |= NATIVE_MODE_ALL;
286 pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
290 static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
292 static int printed_version;
295 struct ata_probe_ent *probe_ent;
296 int board_id = (int) ent->driver_data;
297 const int *bar_sizes;
298 int pci_dev_busy = 0;
301 if (!printed_version++)
302 printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
304 rc = pci_enable_device(pdev);
308 rc = pci_request_regions(pdev, DRV_NAME);
314 if (board_id == vt6420) {
315 pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
316 if (tmp8 & SATA_2DEV) {
317 printk(KERN_ERR DRV_NAME "(%s): SATA master/slave not supported (0x%x)\n",
318 pci_name(pdev), (int) tmp8);
320 goto err_out_regions;
323 bar_sizes = &svia_bar_sizes[0];
325 bar_sizes = &vt6421_bar_sizes[0];
328 for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
329 if ((pci_resource_start(pdev, i) == 0) ||
330 (pci_resource_len(pdev, i) < bar_sizes[i])) {
331 printk(KERN_ERR DRV_NAME "(%s): invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
333 pci_resource_start(pdev, i),
334 pci_resource_len(pdev, i));
336 goto err_out_regions;
339 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
341 goto err_out_regions;
342 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
344 goto err_out_regions;
346 if (board_id == vt6420)
347 probe_ent = vt6420_init_probe_ent(pdev);
349 probe_ent = vt6421_init_probe_ent(pdev);
352 printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
355 goto err_out_regions;
358 svia_configure(pdev);
360 pci_set_master(pdev);
362 /* FIXME: check ata_device_add return value */
363 ata_device_add(probe_ent);
369 pci_release_regions(pdev);
372 pci_disable_device(pdev);
376 static int __init svia_init(void)
378 return pci_module_init(&svia_pci_driver);
381 static void __exit svia_exit(void)
383 pci_unregister_driver(&svia_pci_driver);
386 module_init(svia_init);
387 module_exit(svia_exit);