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31#include <linux/kernel.h>
32#include <linux/module.h>
33#include <linux/pci.h>
34#include <linux/init.h>
35#include <linux/blkdev.h>
36#include <linux/delay.h>
37#include <scsi/scsi_host.h>
38#include <linux/libata.h>
39#include <asm/msr.h>
40
41#define DRV_NAME "pata_cs5535"
42#define DRV_VERSION "0.2.12"
43
44
45
46
47
48
49#define MSR_ATAC_BASE 0x51300000
50#define ATAC_GLD_MSR_CAP (MSR_ATAC_BASE+0)
51#define ATAC_GLD_MSR_CONFIG (MSR_ATAC_BASE+0x01)
52#define ATAC_GLD_MSR_SMI (MSR_ATAC_BASE+0x02)
53#define ATAC_GLD_MSR_ERROR (MSR_ATAC_BASE+0x03)
54#define ATAC_GLD_MSR_PM (MSR_ATAC_BASE+0x04)
55#define ATAC_GLD_MSR_DIAG (MSR_ATAC_BASE+0x05)
56#define ATAC_IO_BAR (MSR_ATAC_BASE+0x08)
57#define ATAC_RESET (MSR_ATAC_BASE+0x10)
58#define ATAC_CH0D0_PIO (MSR_ATAC_BASE+0x20)
59#define ATAC_CH0D0_DMA (MSR_ATAC_BASE+0x21)
60#define ATAC_CH0D1_PIO (MSR_ATAC_BASE+0x22)
61#define ATAC_CH0D1_DMA (MSR_ATAC_BASE+0x23)
62#define ATAC_PCI_ABRTERR (MSR_ATAC_BASE+0x24)
63
64#define ATAC_BM0_CMD_PRIM 0x00
65#define ATAC_BM0_STS_PRIM 0x02
66#define ATAC_BM0_PRD 0x04
67
68#define CS5535_CABLE_DETECT 0x48
69
70
71
72
73
74
75
76
77
78static int cs5535_cable_detect(struct ata_port *ap)
79{
80 u8 cable;
81 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
82
83 pci_read_config_byte(pdev, CS5535_CABLE_DETECT, &cable);
84 if (cable & 1)
85 return ATA_CBL_PATA80;
86 else
87 return ATA_CBL_PATA40;
88}
89
90
91
92
93
94
95
96
97
98static void cs5535_set_piomode(struct ata_port *ap, struct ata_device *adev)
99{
100 static const u16 pio_timings[5] = {
101 0xF7F4, 0xF173, 0x8141, 0x5131, 0x1131
102 };
103 static const u16 pio_cmd_timings[5] = {
104 0xF7F4, 0x53F3, 0x13F1, 0x5131, 0x1131
105 };
106 u32 reg, dummy;
107 struct ata_device *pair = ata_dev_pair(adev);
108
109 int mode = adev->pio_mode - XFER_PIO_0;
110 int cmdmode = mode;
111
112
113 if (pair) {
114 int pairmode = pair->pio_mode - XFER_PIO_0;
115 cmdmode = min(mode, pairmode);
116
117 if (cmdmode < pairmode)
118 wrmsr(ATAC_CH0D0_PIO + 2 * pair->devno,
119 pio_cmd_timings[cmdmode] << 16 | pio_timings[pairmode], 0);
120 }
121
122 wrmsr(ATAC_CH0D0_PIO + 2 * adev->devno,
123 pio_cmd_timings[cmdmode] << 16 | pio_timings[mode], 0);
124
125
126 rdmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg, dummy);
127 wrmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg | 0x80000000UL, 0);
128}
129
130
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132
133
134
135
136
137static void cs5535_set_dmamode(struct ata_port *ap, struct ata_device *adev)
138{
139 static const u32 udma_timings[5] = {
140 0x7F7436A1, 0x7F733481, 0x7F723261, 0x7F713161, 0x7F703061
141 };
142 static const u32 mwdma_timings[3] = {
143 0x7F0FFFF3, 0x7F035352, 0x7F024241
144 };
145 u32 reg, dummy;
146 int mode = adev->dma_mode;
147
148 rdmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg, dummy);
149 reg &= 0x80000000UL;
150 if (mode >= XFER_UDMA_0)
151 reg |= udma_timings[mode - XFER_UDMA_0];
152 else
153 reg |= mwdma_timings[mode - XFER_MW_DMA_0];
154 wrmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg, 0);
155}
156
157static struct scsi_host_template cs5535_sht = {
158 ATA_BMDMA_SHT(DRV_NAME),
159};
160
161static struct ata_port_operations cs5535_port_ops = {
162 .inherits = &ata_bmdma_port_ops,
163 .cable_detect = cs5535_cable_detect,
164 .set_piomode = cs5535_set_piomode,
165 .set_dmamode = cs5535_set_dmamode,
166};
167
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175
176
177
178static int cs5535_init_one(struct pci_dev *dev, const struct pci_device_id *id)
179{
180 static const struct ata_port_info info = {
181 .flags = ATA_FLAG_SLAVE_POSS,
182 .pio_mask = ATA_PIO4,
183 .mwdma_mask = ATA_MWDMA2,
184 .udma_mask = ATA_UDMA4,
185 .port_ops = &cs5535_port_ops
186 };
187 const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
188
189 return ata_pci_bmdma_init_one(dev, ppi, &cs5535_sht, NULL, 0);
190}
191
192static const struct pci_device_id cs5535[] = {
193 { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_CS5535_IDE), },
194 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5535_IDE), },
195
196 { },
197};
198
199static struct pci_driver cs5535_pci_driver = {
200 .name = DRV_NAME,
201 .id_table = cs5535,
202 .probe = cs5535_init_one,
203 .remove = ata_pci_remove_one,
204#ifdef CONFIG_PM
205 .suspend = ata_pci_device_suspend,
206 .resume = ata_pci_device_resume,
207#endif
208};
209
210module_pci_driver(cs5535_pci_driver);
211
212MODULE_AUTHOR("Alan Cox, Jens Altmann, Wolfgan Zuleger, Alexander Kiausch");
213MODULE_DESCRIPTION("low-level driver for the NS/AMD 5535");
214MODULE_LICENSE("GPL");
215MODULE_DEVICE_TABLE(pci, cs5535);
216MODULE_VERSION(DRV_VERSION);
217