2 * pata_hpt3x3 - HPT3x3 driver
3 * (c) Copyright 2005-2006 Red Hat
5 * Was pata_hpt34x but the naming was confusing as it supported the
6 * 343 and 363 so it has been renamed.
9 * linux/drivers/ide/pci/hpt34x.c Version 0.40 Sept 10, 2002
10 * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
12 * May be copied or modified under the terms of the GNU General Public
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>
25 #define DRV_NAME "pata_hpt3x3"
26 #define DRV_VERSION "0.6.1"
29 * hpt3x3_set_piomode - PIO setup
31 * @adev: device on the interface
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
38 static void hpt3x3_set_piomode(struct ata_port *ap, struct ata_device *adev)
40 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
42 int dn = 2 * ap->port_no + adev->devno;
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 */
51 pci_write_config_dword(pdev, 0x44, r1);
52 pci_write_config_dword(pdev, 0x48, r2);
55 #if defined(CONFIG_PATA_HPT3X3_DMA)
57 * hpt3x3_set_dmamode - DMA timing setup
59 * @adev: Device being configured
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.
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
68 static void hpt3x3_set_dmamode(struct ata_port *ap, struct ata_device *adev)
70 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
72 int dn = 2 * ap->port_no + adev->devno;
73 int mode_num = adev->dma_mode & 0x0F;
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 */
82 if (adev->dma_mode >= XFER_UDMA_0)
83 r2 |= (0x01 << dn); /* Ultra mode */
85 r2 |= (0x10 << dn); /* MWDMA */
87 pci_write_config_dword(pdev, 0x44, r1);
88 pci_write_config_dword(pdev, 0x48, r2);
92 * hpt3x3_freeze - DMA workaround
95 * When freezing an HPT3x3 we must stop any pending DMA before
96 * writing to the control register or the chip will hang
99 static void hpt3x3_freeze(struct ata_port *ap)
101 void __iomem *mmio = ap->ioaddr.bmdma_addr;
103 iowrite8(ioread8(mmio + ATA_DMA_CMD) & ~ ATA_DMA_START,
105 ata_sff_dma_pause(ap);
110 * hpt3x3_bmdma_setup - DMA workaround
111 * @qc: Queued command
113 * When issuing BMDMA we must clean up the error/active bits in
114 * software on this device
117 static void hpt3x3_bmdma_setup(struct ata_queued_cmd *qc)
119 struct ata_port *ap = qc->ap;
120 u8 r = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
121 r |= ATA_DMA_INTR | ATA_DMA_ERR;
122 iowrite8(r, ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
123 return ata_bmdma_setup(qc);
127 * hpt3x3_atapi_dma - ATAPI DMA check
128 * @qc: Queued command
130 * Just say no - we don't do ATAPI DMA
133 static int hpt3x3_atapi_dma(struct ata_queued_cmd *qc)
138 #endif /* CONFIG_PATA_HPT3X3_DMA */
140 static struct scsi_host_template hpt3x3_sht = {
141 ATA_BMDMA_SHT(DRV_NAME),
144 static struct ata_port_operations hpt3x3_port_ops = {
145 .inherits = &ata_bmdma_port_ops,
146 .cable_detect = ata_cable_40wire,
147 .set_piomode = hpt3x3_set_piomode,
148 #if defined(CONFIG_PATA_HPT3X3_DMA)
149 .set_dmamode = hpt3x3_set_dmamode,
150 .bmdma_setup = hpt3x3_bmdma_setup,
151 .check_atapi_dma= hpt3x3_atapi_dma,
152 .freeze = hpt3x3_freeze,
158 * hpt3x3_init_chipset - chip setup
161 * Perform the setup required at boot and on resume.
164 static void hpt3x3_init_chipset(struct pci_dev *dev)
167 /* Initialize the board */
168 pci_write_config_word(dev, 0x80, 0x00);
169 /* Check if it is a 343 or a 363. 363 has COMMAND_MEMORY set */
170 pci_read_config_word(dev, PCI_COMMAND, &cmd);
171 if (cmd & PCI_COMMAND_MEMORY)
172 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0);
174 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);
178 * hpt3x3_init_one - Initialise an HPT343/363
180 * @id: Entry in match table
182 * Perform basic initialisation. We set the device up so we access all
183 * ports via BAR4. This is necessary to work around errata.
186 static int hpt3x3_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
188 static const struct ata_port_info info = {
189 .flags = ATA_FLAG_SLAVE_POSS,
190 .pio_mask = ATA_PIO4,
191 #if defined(CONFIG_PATA_HPT3X3_DMA)
192 /* Further debug needed */
193 .mwdma_mask = ATA_MWDMA2,
194 .udma_mask = ATA_UDMA2,
196 .port_ops = &hpt3x3_port_ops
198 /* Register offsets of taskfiles in BAR4 area */
199 static const u8 offset_cmd[2] = { 0x20, 0x28 };
200 static const u8 offset_ctl[2] = { 0x36, 0x3E };
201 const struct ata_port_info *ppi[] = { &info, NULL };
202 struct ata_host *host;
206 hpt3x3_init_chipset(pdev);
208 ata_print_version_once(&pdev->dev, DRV_VERSION);
210 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2);
213 /* acquire resources and fill host */
214 rc = pcim_enable_device(pdev);
218 /* Everything is relative to BAR4 if we set up this way */
219 rc = pcim_iomap_regions(pdev, 1 << 4, DRV_NAME);
221 pcim_pin_device(pdev);
224 host->iomap = pcim_iomap_table(pdev);
225 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
228 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
232 base = host->iomap[4]; /* Bus mastering base */
234 for (i = 0; i < host->n_ports; i++) {
235 struct ata_port *ap = host->ports[i];
236 struct ata_ioports *ioaddr = &ap->ioaddr;
238 ioaddr->cmd_addr = base + offset_cmd[i];
239 ioaddr->altstatus_addr =
240 ioaddr->ctl_addr = base + offset_ctl[i];
241 ioaddr->scr_addr = NULL;
242 ata_sff_std_ports(ioaddr);
243 ioaddr->bmdma_addr = base + 8 * i;
245 ata_port_pbar_desc(ap, 4, -1, "ioport");
246 ata_port_pbar_desc(ap, 4, offset_cmd[i], "cmd");
248 pci_set_master(pdev);
249 return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
250 IRQF_SHARED, &hpt3x3_sht);
254 static int hpt3x3_reinit_one(struct pci_dev *dev)
256 struct ata_host *host = dev_get_drvdata(&dev->dev);
259 rc = ata_pci_device_do_resume(dev);
263 hpt3x3_init_chipset(dev);
265 ata_host_resume(host);
270 static const struct pci_device_id hpt3x3[] = {
271 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT343), },
276 static struct pci_driver hpt3x3_pci_driver = {
279 .probe = hpt3x3_init_one,
280 .remove = ata_pci_remove_one,
282 .suspend = ata_pci_device_suspend,
283 .resume = hpt3x3_reinit_one,
287 module_pci_driver(hpt3x3_pci_driver);
289 MODULE_AUTHOR("Alan Cox");
290 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT343/363");
291 MODULE_LICENSE("GPL");
292 MODULE_DEVICE_TABLE(pci, hpt3x3);
293 MODULE_VERSION(DRV_VERSION);