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669a5db4 JG |
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 | */ | |
85cd7251 | 15 | |
669a5db4 JG |
16 | #include <linux/kernel.h> |
17 | #include <linux/module.h> | |
18 | #include <linux/pci.h> | |
669a5db4 JG |
19 | #include <linux/blkdev.h> |
20 | #include <linux/delay.h> | |
21 | #include <scsi/scsi_host.h> | |
22 | #include <linux/libata.h> | |
23 | ||
24 | #define DRV_NAME "pata_hpt3x3" | |
978ff6db | 25 | #define DRV_VERSION "0.6.1" |
669a5db4 | 26 | |
669a5db4 JG |
27 | /** |
28 | * hpt3x3_set_piomode - PIO setup | |
29 | * @ap: ATA interface | |
30 | * @adev: device on the interface | |
31 | * | |
32 | * Set our PIO requirements. This is fairly simple on the HPT3x3 as | |
33 | * all we have to do is clear the MWDMA and UDMA bits then load the | |
34 | * mode number. | |
35 | */ | |
36 | ||
37 | static void hpt3x3_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
38 | { | |
39 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
40 | u32 r1, r2; | |
41 | int dn = 2 * ap->port_no + adev->devno; | |
42 | ||
43 | pci_read_config_dword(pdev, 0x44, &r1); | |
44 | pci_read_config_dword(pdev, 0x48, &r2); | |
45 | /* Load the PIO timing number */ | |
46 | r1 &= ~(7 << (3 * dn)); | |
47 | r1 |= (adev->pio_mode - XFER_PIO_0) << (3 * dn); | |
48 | r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */ | |
49 | ||
50 | pci_write_config_dword(pdev, 0x44, r1); | |
51 | pci_write_config_dword(pdev, 0x48, r2); | |
52 | } | |
53 | ||
790956e7 | 54 | #if defined(CONFIG_PATA_HPT3X3_DMA) |
669a5db4 JG |
55 | /** |
56 | * hpt3x3_set_dmamode - DMA timing setup | |
57 | * @ap: ATA interface | |
58 | * @adev: Device being configured | |
59 | * | |
60 | * Set up the channel for MWDMA or UDMA modes. Much the same as with | |
61 | * PIO, load the mode number and then set MWDMA or UDMA flag. | |
66e7da4e AC |
62 | * |
63 | * 0x44 : bit 0-2 master mode, 3-5 slave mode, etc | |
64 | * 0x48 : bit 4/0 DMA/UDMA bit 5/1 for slave etc | |
669a5db4 JG |
65 | */ |
66 | ||
67 | static void hpt3x3_set_dmamode(struct ata_port *ap, struct ata_device *adev) | |
68 | { | |
69 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
70 | u32 r1, r2; | |
71 | int dn = 2 * ap->port_no + adev->devno; | |
72 | int mode_num = adev->dma_mode & 0x0F; | |
73 | ||
74 | pci_read_config_dword(pdev, 0x44, &r1); | |
75 | pci_read_config_dword(pdev, 0x48, &r2); | |
76 | /* Load the timing number */ | |
77 | r1 &= ~(7 << (3 * dn)); | |
78 | r1 |= (mode_num << (3 * dn)); | |
79 | r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */ | |
80 | ||
81 | if (adev->dma_mode >= XFER_UDMA_0) | |
978ff6db | 82 | r2 |= (0x01 << dn); /* Ultra mode */ |
669a5db4 | 83 | else |
978ff6db | 84 | r2 |= (0x10 << dn); /* MWDMA */ |
669a5db4 JG |
85 | |
86 | pci_write_config_dword(pdev, 0x44, r1); | |
87 | pci_write_config_dword(pdev, 0x48, r2); | |
88 | } | |
978ff6db AC |
89 | |
90 | /** | |
91 | * hpt3x3_freeze - DMA workaround | |
92 | * @ap: port to freeze | |
93 | * | |
94 | * When freezing an HPT3x3 we must stop any pending DMA before | |
95 | * writing to the control register or the chip will hang | |
96 | */ | |
97 | ||
b63d3953 | 98 | static void hpt3x3_freeze(struct ata_port *ap) |
978ff6db AC |
99 | { |
100 | void __iomem *mmio = ap->ioaddr.bmdma_addr; | |
101 | ||
102 | iowrite8(ioread8(mmio + ATA_DMA_CMD) & ~ ATA_DMA_START, | |
103 | mmio + ATA_DMA_CMD); | |
104 | ata_sff_dma_pause(ap); | |
105 | ata_sff_freeze(ap); | |
106 | } | |
107 | ||
108 | /** | |
109 | * hpt3x3_bmdma_setup - DMA workaround | |
110 | * @qc: Queued command | |
111 | * | |
112 | * When issuing BMDMA we must clean up the error/active bits in | |
113 | * software on this device | |
114 | */ | |
115 | ||
116 | static void hpt3x3_bmdma_setup(struct ata_queued_cmd *qc) | |
117 | { | |
118 | struct ata_port *ap = qc->ap; | |
119 | u8 r = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); | |
120 | r |= ATA_DMA_INTR | ATA_DMA_ERR; | |
121 | iowrite8(r, ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); | |
122 | return ata_bmdma_setup(qc); | |
123 | } | |
669a5db4 | 124 | |
66e7da4e AC |
125 | /** |
126 | * hpt3x3_atapi_dma - ATAPI DMA check | |
127 | * @qc: Queued command | |
128 | * | |
129 | * Just say no - we don't do ATAPI DMA | |
130 | */ | |
131 | ||
132 | static int hpt3x3_atapi_dma(struct ata_queued_cmd *qc) | |
133 | { | |
134 | return 1; | |
135 | } | |
136 | ||
978ff6db AC |
137 | #endif /* CONFIG_PATA_HPT3X3_DMA */ |
138 | ||
669a5db4 | 139 | static struct scsi_host_template hpt3x3_sht = { |
68d1d07b | 140 | ATA_BMDMA_SHT(DRV_NAME), |
669a5db4 JG |
141 | }; |
142 | ||
143 | static struct ata_port_operations hpt3x3_port_ops = { | |
029cfd6b | 144 | .inherits = &ata_bmdma_port_ops, |
029cfd6b | 145 | .cable_detect = ata_cable_40wire, |
669a5db4 | 146 | .set_piomode = hpt3x3_set_piomode, |
790956e7 JG |
147 | #if defined(CONFIG_PATA_HPT3X3_DMA) |
148 | .set_dmamode = hpt3x3_set_dmamode, | |
978ff6db AC |
149 | .bmdma_setup = hpt3x3_bmdma_setup, |
150 | .check_atapi_dma= hpt3x3_atapi_dma, | |
151 | .freeze = hpt3x3_freeze, | |
790956e7 | 152 | #endif |
4fca377f | 153 | |
669a5db4 JG |
154 | }; |
155 | ||
aff0df05 AC |
156 | /** |
157 | * hpt3x3_init_chipset - chip setup | |
158 | * @dev: PCI device | |
159 | * | |
160 | * Perform the setup required at boot and on resume. | |
161 | */ | |
f20b16ff | 162 | |
aff0df05 AC |
163 | static void hpt3x3_init_chipset(struct pci_dev *dev) |
164 | { | |
165 | u16 cmd; | |
166 | /* Initialize the board */ | |
167 | pci_write_config_word(dev, 0x80, 0x00); | |
168 | /* Check if it is a 343 or a 363. 363 has COMMAND_MEMORY set */ | |
169 | pci_read_config_word(dev, PCI_COMMAND, &cmd); | |
170 | if (cmd & PCI_COMMAND_MEMORY) | |
171 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0); | |
172 | else | |
173 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20); | |
174 | } | |
175 | ||
669a5db4 JG |
176 | /** |
177 | * hpt3x3_init_one - Initialise an HPT343/363 | |
66e7da4e | 178 | * @pdev: PCI device |
669a5db4 JG |
179 | * @id: Entry in match table |
180 | * | |
66e7da4e | 181 | * Perform basic initialisation. We set the device up so we access all |
3ad2f3fb | 182 | * ports via BAR4. This is necessary to work around errata. |
669a5db4 JG |
183 | */ |
184 | ||
66e7da4e | 185 | static int hpt3x3_init_one(struct pci_dev *pdev, const struct pci_device_id *id) |
669a5db4 | 186 | { |
1626aeb8 | 187 | static const struct ata_port_info info = { |
1d2808fd | 188 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 | 189 | .pio_mask = ATA_PIO4, |
66e7da4e AC |
190 | #if defined(CONFIG_PATA_HPT3X3_DMA) |
191 | /* Further debug needed */ | |
14bdef98 EIB |
192 | .mwdma_mask = ATA_MWDMA2, |
193 | .udma_mask = ATA_UDMA2, | |
66e7da4e | 194 | #endif |
669a5db4 JG |
195 | .port_ops = &hpt3x3_port_ops |
196 | }; | |
66e7da4e AC |
197 | /* Register offsets of taskfiles in BAR4 area */ |
198 | static const u8 offset_cmd[2] = { 0x20, 0x28 }; | |
199 | static const u8 offset_ctl[2] = { 0x36, 0x3E }; | |
1626aeb8 | 200 | const struct ata_port_info *ppi[] = { &info, NULL }; |
66e7da4e AC |
201 | struct ata_host *host; |
202 | int i, rc; | |
203 | void __iomem *base; | |
204 | ||
205 | hpt3x3_init_chipset(pdev); | |
206 | ||
06296a1e | 207 | ata_print_version_once(&pdev->dev, DRV_VERSION); |
66e7da4e AC |
208 | |
209 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2); | |
210 | if (!host) | |
211 | return -ENOMEM; | |
212 | /* acquire resources and fill host */ | |
213 | rc = pcim_enable_device(pdev); | |
214 | if (rc) | |
215 | return rc; | |
216 | ||
217 | /* Everything is relative to BAR4 if we set up this way */ | |
218 | rc = pcim_iomap_regions(pdev, 1 << 4, DRV_NAME); | |
219 | if (rc == -EBUSY) | |
220 | pcim_pin_device(pdev); | |
221 | if (rc) | |
222 | return rc; | |
223 | host->iomap = pcim_iomap_table(pdev); | |
b5e55556 | 224 | rc = dma_set_mask_and_coherent(&pdev->dev, ATA_DMA_MASK); |
66e7da4e AC |
225 | if (rc) |
226 | return rc; | |
227 | ||
228 | base = host->iomap[4]; /* Bus mastering base */ | |
229 | ||
230 | for (i = 0; i < host->n_ports; i++) { | |
cbcdd875 TH |
231 | struct ata_port *ap = host->ports[i]; |
232 | struct ata_ioports *ioaddr = &ap->ioaddr; | |
66e7da4e AC |
233 | |
234 | ioaddr->cmd_addr = base + offset_cmd[i]; | |
235 | ioaddr->altstatus_addr = | |
236 | ioaddr->ctl_addr = base + offset_ctl[i]; | |
237 | ioaddr->scr_addr = NULL; | |
9363c382 | 238 | ata_sff_std_ports(ioaddr); |
66e7da4e | 239 | ioaddr->bmdma_addr = base + 8 * i; |
cbcdd875 TH |
240 | |
241 | ata_port_pbar_desc(ap, 4, -1, "ioport"); | |
242 | ata_port_pbar_desc(ap, 4, offset_cmd[i], "cmd"); | |
66e7da4e AC |
243 | } |
244 | pci_set_master(pdev); | |
c3b28894 | 245 | return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt, |
9363c382 | 246 | IRQF_SHARED, &hpt3x3_sht); |
669a5db4 JG |
247 | } |
248 | ||
58eb8cd5 | 249 | #ifdef CONFIG_PM_SLEEP |
aff0df05 AC |
250 | static int hpt3x3_reinit_one(struct pci_dev *dev) |
251 | { | |
0a86e1c8 | 252 | struct ata_host *host = pci_get_drvdata(dev); |
39150444 BZ |
253 | int rc; |
254 | ||
255 | rc = ata_pci_device_do_resume(dev); | |
256 | if (rc) | |
257 | return rc; | |
258 | ||
aff0df05 | 259 | hpt3x3_init_chipset(dev); |
39150444 BZ |
260 | |
261 | ata_host_resume(host); | |
262 | return 0; | |
aff0df05 | 263 | } |
438ac6d5 | 264 | #endif |
aff0df05 | 265 | |
2d2744fc JG |
266 | static const struct pci_device_id hpt3x3[] = { |
267 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT343), }, | |
268 | ||
269 | { }, | |
669a5db4 JG |
270 | }; |
271 | ||
272 | static struct pci_driver hpt3x3_pci_driver = { | |
2d2744fc | 273 | .name = DRV_NAME, |
669a5db4 JG |
274 | .id_table = hpt3x3, |
275 | .probe = hpt3x3_init_one, | |
aff0df05 | 276 | .remove = ata_pci_remove_one, |
58eb8cd5 | 277 | #ifdef CONFIG_PM_SLEEP |
aff0df05 AC |
278 | .suspend = ata_pci_device_suspend, |
279 | .resume = hpt3x3_reinit_one, | |
438ac6d5 | 280 | #endif |
669a5db4 JG |
281 | }; |
282 | ||
2fc75da0 | 283 | module_pci_driver(hpt3x3_pci_driver); |
669a5db4 JG |
284 | |
285 | MODULE_AUTHOR("Alan Cox"); | |
286 | MODULE_DESCRIPTION("low-level driver for the Highpoint HPT343/363"); | |
287 | MODULE_LICENSE("GPL"); | |
288 | MODULE_DEVICE_TABLE(pci, hpt3x3); | |
289 | MODULE_VERSION(DRV_VERSION); |