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1 | /* | |
2 | * pata_hpt3x3 - HPT3x3 driver | |
3 | * (c) Copyright 2005-2006 Red Hat | |
4 | * | |
5 | * Was pata_hpt34x but the naming was confusing as it supported the | |
6 | * 343 and 363 so it has been renamed. | |
7 | * | |
8 | * Based on: | |
9 | * linux/drivers/ide/pci/hpt34x.c Version 0.40 Sept 10, 2002 | |
10 | * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> | |
11 | * | |
12 | * May be copied or modified under the terms of the GNU General Public | |
13 | * License | |
14 | */ | |
15 | ||
16 | #include <linux/kernel.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/pci.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/blkdev.h> | |
21 | #include <linux/delay.h> | |
22 | #include <scsi/scsi_host.h> | |
23 | #include <linux/libata.h> | |
24 | ||
25 | #define DRV_NAME "pata_hpt3x3" | |
26 | #define DRV_VERSION "0.5.3" | |
27 | ||
28 | /** | |
29 | * hpt3x3_set_piomode - PIO setup | |
30 | * @ap: ATA interface | |
31 | * @adev: device on the interface | |
32 | * | |
33 | * Set our PIO requirements. This is fairly simple on the HPT3x3 as | |
34 | * all we have to do is clear the MWDMA and UDMA bits then load the | |
35 | * mode number. | |
36 | */ | |
37 | ||
38 | static void hpt3x3_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
39 | { | |
40 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
41 | u32 r1, r2; | |
42 | int dn = 2 * ap->port_no + adev->devno; | |
43 | ||
44 | pci_read_config_dword(pdev, 0x44, &r1); | |
45 | pci_read_config_dword(pdev, 0x48, &r2); | |
46 | /* Load the PIO timing number */ | |
47 | r1 &= ~(7 << (3 * dn)); | |
48 | r1 |= (adev->pio_mode - XFER_PIO_0) << (3 * dn); | |
49 | r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */ | |
50 | ||
51 | pci_write_config_dword(pdev, 0x44, r1); | |
52 | pci_write_config_dword(pdev, 0x48, r2); | |
53 | } | |
54 | ||
55 | #if defined(CONFIG_PATA_HPT3X3_DMA) | |
56 | /** | |
57 | * hpt3x3_set_dmamode - DMA timing setup | |
58 | * @ap: ATA interface | |
59 | * @adev: Device being configured | |
60 | * | |
61 | * Set up the channel for MWDMA or UDMA modes. Much the same as with | |
62 | * PIO, load the mode number and then set MWDMA or UDMA flag. | |
63 | * | |
64 | * 0x44 : bit 0-2 master mode, 3-5 slave mode, etc | |
65 | * 0x48 : bit 4/0 DMA/UDMA bit 5/1 for slave etc | |
66 | */ | |
67 | ||
68 | static void hpt3x3_set_dmamode(struct ata_port *ap, struct ata_device *adev) | |
69 | { | |
70 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
71 | u32 r1, r2; | |
72 | int dn = 2 * ap->port_no + adev->devno; | |
73 | int mode_num = adev->dma_mode & 0x0F; | |
74 | ||
75 | pci_read_config_dword(pdev, 0x44, &r1); | |
76 | pci_read_config_dword(pdev, 0x48, &r2); | |
77 | /* Load the timing number */ | |
78 | r1 &= ~(7 << (3 * dn)); | |
79 | r1 |= (mode_num << (3 * dn)); | |
80 | r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */ | |
81 | ||
82 | if (adev->dma_mode >= XFER_UDMA_0) | |
83 | r2 |= (0x10 << dn); /* Ultra mode */ | |
84 | else | |
85 | r2 |= (0x01 << dn); /* MWDMA */ | |
86 | ||
87 | pci_write_config_dword(pdev, 0x44, r1); | |
88 | pci_write_config_dword(pdev, 0x48, r2); | |
89 | } | |
90 | #endif /* CONFIG_PATA_HPT3X3_DMA */ | |
91 | ||
92 | /** | |
93 | * hpt3x3_atapi_dma - ATAPI DMA check | |
94 | * @qc: Queued command | |
95 | * | |
96 | * Just say no - we don't do ATAPI DMA | |
97 | */ | |
98 | ||
99 | static int hpt3x3_atapi_dma(struct ata_queued_cmd *qc) | |
100 | { | |
101 | return 1; | |
102 | } | |
103 | ||
104 | static struct scsi_host_template hpt3x3_sht = { | |
105 | ATA_BMDMA_SHT(DRV_NAME), | |
106 | }; | |
107 | ||
108 | static struct ata_port_operations hpt3x3_port_ops = { | |
109 | .inherits = &ata_bmdma_port_ops, | |
110 | .check_atapi_dma= hpt3x3_atapi_dma, | |
111 | .cable_detect = ata_cable_40wire, | |
112 | .set_piomode = hpt3x3_set_piomode, | |
113 | #if defined(CONFIG_PATA_HPT3X3_DMA) | |
114 | .set_dmamode = hpt3x3_set_dmamode, | |
115 | #endif | |
116 | }; | |
117 | ||
118 | /** | |
119 | * hpt3x3_init_chipset - chip setup | |
120 | * @dev: PCI device | |
121 | * | |
122 | * Perform the setup required at boot and on resume. | |
123 | */ | |
124 | ||
125 | static void hpt3x3_init_chipset(struct pci_dev *dev) | |
126 | { | |
127 | u16 cmd; | |
128 | /* Initialize the board */ | |
129 | pci_write_config_word(dev, 0x80, 0x00); | |
130 | /* Check if it is a 343 or a 363. 363 has COMMAND_MEMORY set */ | |
131 | pci_read_config_word(dev, PCI_COMMAND, &cmd); | |
132 | if (cmd & PCI_COMMAND_MEMORY) | |
133 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0); | |
134 | else | |
135 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20); | |
136 | } | |
137 | ||
138 | /** | |
139 | * hpt3x3_init_one - Initialise an HPT343/363 | |
140 | * @pdev: PCI device | |
141 | * @id: Entry in match table | |
142 | * | |
143 | * Perform basic initialisation. We set the device up so we access all | |
144 | * ports via BAR4. This is neccessary to work around errata. | |
145 | */ | |
146 | ||
147 | static int hpt3x3_init_one(struct pci_dev *pdev, const struct pci_device_id *id) | |
148 | { | |
149 | static int printed_version; | |
150 | static const struct ata_port_info info = { | |
151 | .flags = ATA_FLAG_SLAVE_POSS, | |
152 | .pio_mask = 0x1f, | |
153 | #if defined(CONFIG_PATA_HPT3X3_DMA) | |
154 | /* Further debug needed */ | |
155 | .mwdma_mask = 0x07, | |
156 | .udma_mask = 0x07, | |
157 | #endif | |
158 | .port_ops = &hpt3x3_port_ops | |
159 | }; | |
160 | /* Register offsets of taskfiles in BAR4 area */ | |
161 | static const u8 offset_cmd[2] = { 0x20, 0x28 }; | |
162 | static const u8 offset_ctl[2] = { 0x36, 0x3E }; | |
163 | const struct ata_port_info *ppi[] = { &info, NULL }; | |
164 | struct ata_host *host; | |
165 | int i, rc; | |
166 | void __iomem *base; | |
167 | ||
168 | hpt3x3_init_chipset(pdev); | |
169 | ||
170 | if (!printed_version++) | |
171 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); | |
172 | ||
173 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2); | |
174 | if (!host) | |
175 | return -ENOMEM; | |
176 | /* acquire resources and fill host */ | |
177 | rc = pcim_enable_device(pdev); | |
178 | if (rc) | |
179 | return rc; | |
180 | ||
181 | /* Everything is relative to BAR4 if we set up this way */ | |
182 | rc = pcim_iomap_regions(pdev, 1 << 4, DRV_NAME); | |
183 | if (rc == -EBUSY) | |
184 | pcim_pin_device(pdev); | |
185 | if (rc) | |
186 | return rc; | |
187 | host->iomap = pcim_iomap_table(pdev); | |
188 | rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); | |
189 | if (rc) | |
190 | return rc; | |
191 | rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); | |
192 | if (rc) | |
193 | return rc; | |
194 | ||
195 | base = host->iomap[4]; /* Bus mastering base */ | |
196 | ||
197 | for (i = 0; i < host->n_ports; i++) { | |
198 | struct ata_port *ap = host->ports[i]; | |
199 | struct ata_ioports *ioaddr = &ap->ioaddr; | |
200 | ||
201 | ioaddr->cmd_addr = base + offset_cmd[i]; | |
202 | ioaddr->altstatus_addr = | |
203 | ioaddr->ctl_addr = base + offset_ctl[i]; | |
204 | ioaddr->scr_addr = NULL; | |
205 | ata_std_ports(ioaddr); | |
206 | ioaddr->bmdma_addr = base + 8 * i; | |
207 | ||
208 | ata_port_pbar_desc(ap, 4, -1, "ioport"); | |
209 | ata_port_pbar_desc(ap, 4, offset_cmd[i], "cmd"); | |
210 | } | |
211 | pci_set_master(pdev); | |
212 | return ata_host_activate(host, pdev->irq, ata_interrupt, IRQF_SHARED, | |
213 | &hpt3x3_sht); | |
214 | } | |
215 | ||
216 | #ifdef CONFIG_PM | |
217 | static int hpt3x3_reinit_one(struct pci_dev *dev) | |
218 | { | |
219 | hpt3x3_init_chipset(dev); | |
220 | return ata_pci_device_resume(dev); | |
221 | } | |
222 | #endif | |
223 | ||
224 | static const struct pci_device_id hpt3x3[] = { | |
225 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT343), }, | |
226 | ||
227 | { }, | |
228 | }; | |
229 | ||
230 | static struct pci_driver hpt3x3_pci_driver = { | |
231 | .name = DRV_NAME, | |
232 | .id_table = hpt3x3, | |
233 | .probe = hpt3x3_init_one, | |
234 | .remove = ata_pci_remove_one, | |
235 | #ifdef CONFIG_PM | |
236 | .suspend = ata_pci_device_suspend, | |
237 | .resume = hpt3x3_reinit_one, | |
238 | #endif | |
239 | }; | |
240 | ||
241 | static int __init hpt3x3_init(void) | |
242 | { | |
243 | return pci_register_driver(&hpt3x3_pci_driver); | |
244 | } | |
245 | ||
246 | ||
247 | static void __exit hpt3x3_exit(void) | |
248 | { | |
249 | pci_unregister_driver(&hpt3x3_pci_driver); | |
250 | } | |
251 | ||
252 | ||
253 | MODULE_AUTHOR("Alan Cox"); | |
254 | MODULE_DESCRIPTION("low-level driver for the Highpoint HPT343/363"); | |
255 | MODULE_LICENSE("GPL"); | |
256 | MODULE_DEVICE_TABLE(pci, hpt3x3); | |
257 | MODULE_VERSION(DRV_VERSION); | |
258 | ||
259 | module_init(hpt3x3_init); | |
260 | module_exit(hpt3x3_exit); |