blob: 033319e8b6cf867433bf1fb15d2bc28c2ddb3cf7 [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,
Tejun Heob23ff242007-03-02 17:30:01 +0900140#ifdef CONFIG_PM
141 .suspend = ata_scsi_device_suspend,
142 .resume = ata_scsi_device_resume,
143#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400144};
145
146static const struct ata_port_operations jmicron_ops = {
147 .port_disable = ata_port_disable,
148
149 /* Task file is PCI ATA format, use helpers */
150 .tf_load = ata_tf_load,
151 .tf_read = ata_tf_read,
152 .check_status = ata_check_status,
153 .exec_command = ata_exec_command,
154 .dev_select = ata_std_dev_select,
155
156 .freeze = ata_bmdma_freeze,
157 .thaw = ata_bmdma_thaw,
158 .error_handler = jmicron_error_handler,
159 .post_internal_cmd = ata_bmdma_post_internal_cmd,
160
161 /* BMDMA handling is PCI ATA format, use helpers */
162 .bmdma_setup = ata_bmdma_setup,
163 .bmdma_start = ata_bmdma_start,
164 .bmdma_stop = ata_bmdma_stop,
165 .bmdma_status = ata_bmdma_status,
166 .qc_prep = ata_qc_prep,
167 .qc_issue = ata_qc_issue_prot,
Tejun Heo0d5ff562007-02-01 15:06:36 +0900168 .data_xfer = ata_data_xfer,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400169
Jeff Garzikbda30282006-09-27 05:41:13 -0400170 /* IRQ-related hooks */
Jeff Garzik669a5db2006-08-29 18:12:40 -0400171 .irq_handler = ata_interrupt,
172 .irq_clear = ata_bmdma_irq_clear,
Akira Iguchi246ce3b2007-01-26 16:27:58 +0900173 .irq_on = ata_irq_on,
174 .irq_ack = ata_irq_ack,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400175
176 /* Generic PATA PCI ATA helpers */
177 .port_start = ata_port_start,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400178};
179
180
181/**
182 * jmicron_init_one - Register Jmicron ATA PCI device with kernel services
183 * @pdev: PCI device to register
184 * @ent: Entry in jmicron_pci_tbl matching with @pdev
185 *
186 * Called from kernel PCI layer.
187 *
188 * LOCKING:
189 * Inherited from PCI layer (may sleep).
190 *
191 * RETURNS:
192 * Zero on success, or -ERRNO value.
193 */
194
195static int jmicron_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
196{
197 static struct ata_port_info info = {
198 .sht = &jmicron_sht,
199 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
200
201 .pio_mask = 0x1f,
202 .mwdma_mask = 0x07,
203 .udma_mask = 0x3f,
204
205 .port_ops = &jmicron_ops,
206 };
207 struct ata_port_info *port_info[2] = { &info, &info };
208
Jeff Garzik669a5db2006-08-29 18:12:40 -0400209 return ata_pci_init_one(pdev, port_info, 2);
210}
211
212static const struct pci_device_id jmicron_pci_tbl[] = {
Tejun Heoe34bb372007-02-26 20:24:03 +0900213 { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361,
214 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 361 },
215 { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363,
216 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 363 },
217 { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365,
218 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 365 },
219 { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366,
220 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 366 },
221 { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368,
222 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 368 },
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400223
Jeff Garzik669a5db2006-08-29 18:12:40 -0400224 { } /* terminate list */
225};
226
227static struct pci_driver jmicron_pci_driver = {
228 .name = DRV_NAME,
229 .id_table = jmicron_pci_tbl,
230 .probe = jmicron_init_one,
231 .remove = ata_pci_remove_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900232#ifdef CONFIG_PM
Aland39ca892006-11-22 17:18:30 +0000233 .suspend = ata_pci_device_suspend,
Tejun Heo960627b2007-02-26 20:09:02 +0900234 .resume = ata_pci_device_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900235#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400236};
237
238static int __init jmicron_init(void)
239{
240 return pci_register_driver(&jmicron_pci_driver);
241}
242
243static void __exit jmicron_exit(void)
244{
245 pci_unregister_driver(&jmicron_pci_driver);
246}
Tejun Heo438ac6d2007-03-02 17:31:26 +0900247#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400248
249module_init(jmicron_init);
250module_exit(jmicron_exit);
251
252MODULE_AUTHOR("Alan Cox");
253MODULE_DESCRIPTION("SCSI low-level driver for Jmicron PATA ports");
254MODULE_LICENSE("GPL");
255MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
256MODULE_VERSION(DRV_VERSION);
257