blob: 26365c1078180ac38f402894dfb60956934c5c95 [file] [log] [blame]
Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
2 * pata_jmicron.c - JMicron ATA driver for non AHCI mode. This drives the
3 * PATA port of the controller. The SATA ports are
4 * driven by AHCI in the usual configuration although
5 * this driver can handle other setups if we need it.
6 *
7 * (c) 2006 Red Hat <alan@redhat.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/pci.h>
13#include <linux/init.h>
14#include <linux/blkdev.h>
15#include <linux/delay.h>
16#include <linux/device.h>
17#include <scsi/scsi_host.h>
18#include <linux/libata.h>
19#include <linux/ata.h>
20
21#define DRV_NAME "pata_jmicron"
Aland39ca892006-11-22 17:18:30 +000022#define DRV_VERSION "0.1.4"
Jeff Garzik669a5db2006-08-29 18:12:40 -040023
24typedef enum {
25 PORT_PATA0 = 0,
26 PORT_PATA1 = 1,
27 PORT_SATA = 2,
28} port_type;
29
30/**
31 * jmicron_pre_reset - check for 40/80 pin
32 * @ap: Port
33 *
34 * Perform the PATA port setup we need.
35
36 * On the Jmicron 361/363 there is a single PATA port that can be mapped
37 * either as primary or secondary (or neither). We don't do any policy
38 * and setup here. We assume that has been done by init_one and the
39 * BIOS.
40 */
41
42static int jmicron_pre_reset(struct ata_port *ap)
43{
44 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
45 u32 control;
46 u32 control5;
47 int port_mask = 1<< (4 * ap->port_no);
48 int port = ap->port_no;
49 port_type port_map[2];
50
51 /* Check if our port is enabled */
52 pci_read_config_dword(pdev, 0x40, &control);
53 if ((control & port_mask) == 0)
Alan Coxc9619222006-09-26 17:53:38 +010054 return -ENOENT;
Jeff Garzik669a5db2006-08-29 18:12:40 -040055
56 /* There are two basic mappings. One has the two SATA ports merged
57 as master/slave and the secondary as PATA, the other has only the
58 SATA port mapped */
59 if (control & (1 << 23)) {
60 port_map[0] = PORT_SATA;
61 port_map[1] = PORT_PATA0;
62 } else {
63 port_map[0] = PORT_SATA;
64 port_map[1] = PORT_SATA;
65 }
66
67 /* The 365/366 may have this bit set to map the second PATA port
68 as the internal primary channel */
69 pci_read_config_dword(pdev, 0x80, &control5);
70 if (control5 & (1<<24))
71 port_map[0] = PORT_PATA1;
72
73 /* The two ports may then be logically swapped by the firmware */
74 if (control & (1 << 22))
75 port = port ^ 1;
76
77 /*
78 * Now we know which physical port we are talking about we can
79 * actually do our cable checking etc. Thankfully we don't need
80 * to do the plumbing for other cases.
81 */
82 switch (port_map[port])
83 {
84 case PORT_PATA0:
85 if (control & (1 << 5))
86 return 0;
87 if (control & (1 << 3)) /* 40/80 pin primary */
88 ap->cbl = ATA_CBL_PATA40;
89 else
90 ap->cbl = ATA_CBL_PATA80;
91 break;
92 case PORT_PATA1:
93 /* Bit 21 is set if the port is enabled */
94 if ((control5 & (1 << 21)) == 0)
95 return 0;
96 if (control5 & (1 << 19)) /* 40/80 pin secondary */
97 ap->cbl = ATA_CBL_PATA40;
98 else
99 ap->cbl = ATA_CBL_PATA80;
100 break;
101 case PORT_SATA:
102 ap->cbl = ATA_CBL_SATA;
103 break;
104 }
105 return ata_std_prereset(ap);
106}
107
108/**
109 * jmicron_error_handler - Setup and error handler
110 * @ap: Port to handle
111 *
112 * LOCKING:
113 * None (inherited from caller).
114 */
115
116static void jmicron_error_handler(struct ata_port *ap)
117{
118 return ata_bmdma_drive_eh(ap, jmicron_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
119}
120
121/* No PIO or DMA methods needed for this device */
122
123static struct scsi_host_template jmicron_sht = {
124 .module = THIS_MODULE,
125 .name = DRV_NAME,
126 .ioctl = ata_scsi_ioctl,
127 .queuecommand = ata_scsi_queuecmd,
128 .can_queue = ATA_DEF_QUEUE,
129 .this_id = ATA_SHT_THIS_ID,
130 .sg_tablesize = LIBATA_MAX_PRD,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400131 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
132 .emulated = ATA_SHT_EMULATED,
133 .use_clustering = ATA_SHT_USE_CLUSTERING,
134 .proc_name = DRV_NAME,
135 .dma_boundary = ATA_DMA_BOUNDARY,
136 .slave_configure = ata_scsi_slave_config,
Tejun Heoafdfe892006-11-29 11:26:47 +0900137 .slave_destroy = ata_scsi_slave_destroy,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400138 /* Use standard CHS mapping rules */
139 .bios_param = ata_std_bios_param,
140};
141
142static const struct ata_port_operations jmicron_ops = {
143 .port_disable = ata_port_disable,
144
145 /* Task file is PCI ATA format, use helpers */
146 .tf_load = ata_tf_load,
147 .tf_read = ata_tf_read,
148 .check_status = ata_check_status,
149 .exec_command = ata_exec_command,
150 .dev_select = ata_std_dev_select,
151
152 .freeze = ata_bmdma_freeze,
153 .thaw = ata_bmdma_thaw,
154 .error_handler = jmicron_error_handler,
155 .post_internal_cmd = ata_bmdma_post_internal_cmd,
156
157 /* BMDMA handling is PCI ATA format, use helpers */
158 .bmdma_setup = ata_bmdma_setup,
159 .bmdma_start = ata_bmdma_start,
160 .bmdma_stop = ata_bmdma_stop,
161 .bmdma_status = ata_bmdma_status,
162 .qc_prep = ata_qc_prep,
163 .qc_issue = ata_qc_issue_prot,
Tejun Heo0d5ff562007-02-01 15:06:36 +0900164 .data_xfer = ata_data_xfer,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400165
Jeff Garzikbda30282006-09-27 05:41:13 -0400166 /* IRQ-related hooks */
Jeff Garzik669a5db2006-08-29 18:12:40 -0400167 .irq_handler = ata_interrupt,
168 .irq_clear = ata_bmdma_irq_clear,
169
170 /* Generic PATA PCI ATA helpers */
171 .port_start = ata_port_start,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400172};
173
174
175/**
176 * jmicron_init_one - Register Jmicron ATA PCI device with kernel services
177 * @pdev: PCI device to register
178 * @ent: Entry in jmicron_pci_tbl matching with @pdev
179 *
180 * Called from kernel PCI layer.
181 *
182 * LOCKING:
183 * Inherited from PCI layer (may sleep).
184 *
185 * RETURNS:
186 * Zero on success, or -ERRNO value.
187 */
188
189static int jmicron_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
190{
191 static struct ata_port_info info = {
192 .sht = &jmicron_sht,
193 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
194
195 .pio_mask = 0x1f,
196 .mwdma_mask = 0x07,
197 .udma_mask = 0x3f,
198
199 .port_ops = &jmicron_ops,
200 };
201 struct ata_port_info *port_info[2] = { &info, &info };
202
203 u32 reg;
204
Tejun Heo77280982007-02-02 14:51:09 +0900205 /* PATA controller is fn 1, AHCI is fn 0 */
206 if (id->driver_data != 368 && PCI_FUNC(pdev->devfn) != 1)
207 return -ENODEV;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400208
Tejun Heo77280982007-02-02 14:51:09 +0900209 /* The 365/66 have two PATA channels, redirect the second */
210 if (id->driver_data == 365 || id->driver_data == 366) {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400211 pci_read_config_dword(pdev, 0x80, &reg);
212 reg |= (1 << 24); /* IDE1 to PATA IDE secondary */
213 pci_write_config_dword(pdev, 0x80, reg);
214 }
215
216 return ata_pci_init_one(pdev, port_info, 2);
217}
218
Aland39ca892006-11-22 17:18:30 +0000219static int jmicron_reinit_one(struct pci_dev *pdev)
220{
221 u32 reg;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500222
Aland39ca892006-11-22 17:18:30 +0000223 switch(pdev->device) {
224 case PCI_DEVICE_ID_JMICRON_JMB368:
225 break;
226 case PCI_DEVICE_ID_JMICRON_JMB365:
227 case PCI_DEVICE_ID_JMICRON_JMB366:
228 /* Restore mapping or disks swap and boy does it get ugly */
229 pci_read_config_dword(pdev, 0x80, &reg);
230 reg |= (1 << 24); /* IDE1 to PATA IDE secondary */
231 pci_write_config_dword(pdev, 0x80, reg);
232 /* Fall through */
233 default:
234 /* Make sure AHCI is turned back on */
235 pci_write_config_byte(pdev, 0x41, 0xa1);
236 }
237 return ata_pci_device_resume(pdev);
238}
239
Jeff Garzik669a5db2006-08-29 18:12:40 -0400240static const struct pci_device_id jmicron_pci_tbl[] = {
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400241 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361), 361},
242 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363), 363},
243 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365), 365},
244 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366), 366},
245 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368), 368},
246
Jeff Garzik669a5db2006-08-29 18:12:40 -0400247 { } /* terminate list */
248};
249
250static struct pci_driver jmicron_pci_driver = {
251 .name = DRV_NAME,
252 .id_table = jmicron_pci_tbl,
253 .probe = jmicron_init_one,
254 .remove = ata_pci_remove_one,
Aland39ca892006-11-22 17:18:30 +0000255 .suspend = ata_pci_device_suspend,
256 .resume = jmicron_reinit_one,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400257};
258
259static int __init jmicron_init(void)
260{
261 return pci_register_driver(&jmicron_pci_driver);
262}
263
264static void __exit jmicron_exit(void)
265{
266 pci_unregister_driver(&jmicron_pci_driver);
267}
268
269module_init(jmicron_init);
270module_exit(jmicron_exit);
271
272MODULE_AUTHOR("Alan Cox");
273MODULE_DESCRIPTION("SCSI low-level driver for Jmicron PATA ports");
274MODULE_LICENSE("GPL");
275MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
276MODULE_VERSION(DRV_VERSION);
277