aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/ata/pata_winbond.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/ata/pata_winbond.c')
-rw-r--r--drivers/ata/pata_winbond.c282
1 files changed, 0 insertions, 282 deletions
diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c
deleted file mode 100644
index 6d8619b6f670..000000000000
--- a/drivers/ata/pata_winbond.c
+++ /dev/null
@@ -1,282 +0,0 @@
1/*
2 * pata_winbond.c - Winbond VLB ATA controllers
3 * (C) 2006 Red Hat
4 *
5 * Support for the Winbond 83759A when operating in advanced mode.
6 * Multichip mode is not currently supported.
7 */
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/blkdev.h>
13#include <linux/delay.h>
14#include <scsi/scsi_host.h>
15#include <linux/libata.h>
16#include <linux/platform_device.h>
17
18#define DRV_NAME "pata_winbond"
19#define DRV_VERSION "0.0.3"
20
21#define NR_HOST 4 /* Two winbond controllers, two channels each */
22
23struct winbond_data {
24 unsigned long config;
25 struct platform_device *platform_dev;
26};
27
28static struct ata_host *winbond_host[NR_HOST];
29static struct winbond_data winbond_data[NR_HOST];
30static int nr_winbond_host;
31
32#ifdef MODULE
33static int probe_winbond = 1;
34#else
35static int probe_winbond;
36#endif
37
38static DEFINE_SPINLOCK(winbond_lock);
39
40static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
41{
42 unsigned long flags;
43 spin_lock_irqsave(&winbond_lock, flags);
44 outb(reg, port + 0x01);
45 outb(val, port + 0x02);
46 spin_unlock_irqrestore(&winbond_lock, flags);
47}
48
49static u8 winbond_readcfg(unsigned long port, u8 reg)
50{
51 u8 val;
52
53 unsigned long flags;
54 spin_lock_irqsave(&winbond_lock, flags);
55 outb(reg, port + 0x01);
56 val = inb(port + 0x02);
57 spin_unlock_irqrestore(&winbond_lock, flags);
58
59 return val;
60}
61
62static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
63{
64 struct ata_timing t;
65 struct winbond_data *winbond = ap->host->private_data;
66 int active, recovery;
67 u8 reg;
68 int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
69
70 reg = winbond_readcfg(winbond->config, 0x81);
71
72 /* Get the timing data in cycles */
73 if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
74 ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
75 else
76 ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
77
78 active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
79 recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
80 timing = (active << 4) | recovery;
81 winbond_writecfg(winbond->config, timing, reg);
82
83 /* Load the setup timing */
84
85 reg = 0x35;
86 if (adev->class != ATA_DEV_ATA)
87 reg |= 0x08; /* FIFO off */
88 if (!ata_pio_need_iordy(adev))
89 reg |= 0x02; /* IORDY off */
90 reg |= (clamp_val(t.setup, 0, 3) << 6);
91 winbond_writecfg(winbond->config, timing + 1, reg);
92}
93
94
95static unsigned int winbond_data_xfer(struct ata_device *dev,
96 unsigned char *buf, unsigned int buflen, int rw)
97{
98 struct ata_port *ap = dev->link->ap;
99 int slop = buflen & 3;
100
101 if (ata_id_has_dword_io(dev->id)) {
102 if (rw == READ)
103 ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
104 else
105 iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
106
107 if (unlikely(slop)) {
108 __le32 pad;
109 if (rw == READ) {
110 pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
111 memcpy(buf + buflen - slop, &pad, slop);
112 } else {
113 memcpy(&pad, buf + buflen - slop, slop);
114 iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
115 }
116 buflen += 4 - slop;
117 }
118 } else
119 buflen = ata_sff_data_xfer(dev, buf, buflen, rw);
120
121 return buflen;
122}
123
124static struct scsi_host_template winbond_sht = {
125 ATA_PIO_SHT(DRV_NAME),
126};
127
128static struct ata_port_operations winbond_port_ops = {
129 .inherits = &ata_sff_port_ops,
130 .sff_data_xfer = winbond_data_xfer,
131 .cable_detect = ata_cable_40wire,
132 .set_piomode = winbond_set_piomode,
133};
134
135/**
136 * winbond_init_one - attach a winbond interface
137 * @type: Type to display
138 * @io: I/O port start
139 * @irq: interrupt line
140 * @fast: True if on a > 33Mhz VLB
141 *
142 * Register a VLB bus IDE interface. Such interfaces are PIO and we
143 * assume do not support IRQ sharing.
144 */
145
146static __init int winbond_init_one(unsigned long port)
147{
148 struct platform_device *pdev;
149 u8 reg;
150 int i, rc;
151
152 reg = winbond_readcfg(port, 0x81);
153 reg |= 0x80; /* jumpered mode off */
154 winbond_writecfg(port, 0x81, reg);
155 reg = winbond_readcfg(port, 0x83);
156 reg |= 0xF0; /* local control */
157 winbond_writecfg(port, 0x83, reg);
158 reg = winbond_readcfg(port, 0x85);
159 reg |= 0xF0; /* programmable timing */
160 winbond_writecfg(port, 0x85, reg);
161
162 reg = winbond_readcfg(port, 0x81);
163
164 if (!(reg & 0x03)) /* Disabled */
165 return -ENODEV;
166
167 for (i = 0; i < 2 ; i ++) {
168 unsigned long cmd_port = 0x1F0 - (0x80 * i);
169 unsigned long ctl_port = cmd_port + 0x206;
170 struct ata_host *host;
171 struct ata_port *ap;
172 void __iomem *cmd_addr, *ctl_addr;
173
174 if (!(reg & (1 << i)))
175 continue;
176
177 pdev = platform_device_register_simple(DRV_NAME, nr_winbond_host, NULL, 0);
178 if (IS_ERR(pdev))
179 return PTR_ERR(pdev);
180
181 rc = -ENOMEM;
182 host = ata_host_alloc(&pdev->dev, 1);
183 if (!host)
184 goto err_unregister;
185 ap = host->ports[0];
186
187 rc = -ENOMEM;
188 cmd_addr = devm_ioport_map(&pdev->dev, cmd_port, 8);
189 ctl_addr = devm_ioport_map(&pdev->dev, ctl_port, 1);
190 if (!cmd_addr || !ctl_addr)
191 goto err_unregister;
192
193 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", cmd_port, ctl_port);
194
195 ap->ops = &winbond_port_ops;
196 ap->pio_mask = ATA_PIO4;
197 ap->flags |= ATA_FLAG_SLAVE_POSS;
198 ap->ioaddr.cmd_addr = cmd_addr;
199 ap->ioaddr.altstatus_addr = ctl_addr;
200 ap->ioaddr.ctl_addr = ctl_addr;
201 ata_sff_std_ports(&ap->ioaddr);
202
203 /* hook in a private data structure per channel */
204 host->private_data = &winbond_data[nr_winbond_host];
205 winbond_data[nr_winbond_host].config = port;
206 winbond_data[nr_winbond_host].platform_dev = pdev;
207
208 /* activate */
209 rc = ata_host_activate(host, 14 + i, ata_sff_interrupt, 0,
210 &winbond_sht);
211 if (rc)
212 goto err_unregister;
213
214 winbond_host[nr_winbond_host++] = dev_get_drvdata(&pdev->dev);
215 }
216
217 return 0;
218
219 err_unregister:
220 platform_device_unregister(pdev);
221 return rc;
222}
223
224/**
225 * winbond_init - attach winbond interfaces
226 *
227 * Attach winbond IDE interfaces by scanning the ports it may occupy.
228 */
229
230static __init int winbond_init(void)
231{
232 static const unsigned long config[2] = { 0x130, 0x1B0 };
233
234 int ct = 0;
235 int i;
236
237 if (probe_winbond == 0)
238 return -ENODEV;
239
240 /*
241 * Check both base addresses
242 */
243
244 for (i = 0; i < 2; i++) {
245 if (probe_winbond & (1<<i)) {
246 int ret = 0;
247 unsigned long port = config[i];
248
249 if (request_region(port, 2, "pata_winbond")) {
250 ret = winbond_init_one(port);
251 if (ret <= 0)
252 release_region(port, 2);
253 else ct+= ret;
254 }
255 }
256 }
257 if (ct != 0)
258 return 0;
259 return -ENODEV;
260}
261
262static __exit void winbond_exit(void)
263{
264 int i;
265
266 for (i = 0; i < nr_winbond_host; i++) {
267 ata_host_detach(winbond_host[i]);
268 release_region(winbond_data[i].config, 2);
269 platform_device_unregister(winbond_data[i].platform_dev);
270 }
271}
272
273MODULE_AUTHOR("Alan Cox");
274MODULE_DESCRIPTION("low-level driver for Winbond VL ATA");
275MODULE_LICENSE("GPL");
276MODULE_VERSION(DRV_VERSION);
277
278module_init(winbond_init);
279module_exit(winbond_exit);
280
281module_param(probe_winbond, int, 0);
282
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-01 17:00:35 -0500