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 "0.5.3"
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 |= (0x10 << dn); /* Ultra mode */
85 r2 |= (0x01 << dn); /* MWDMA */
87 pci_write_config_dword(pdev, 0x44, r1);
88 pci_write_config_dword(pdev, 0x48, r2);
90 #endif /* CONFIG_PATA_HPT3X3_DMA */
93 * hpt3x3_atapi_dma - ATAPI DMA check
96 * Just say no - we don't do ATAPI DMA
99 static int hpt3x3_atapi_dma(struct ata_queued_cmd *qc)
104 static struct scsi_host_template hpt3x3_sht = {
105 ATA_BMDMA_SHT(DRV_NAME),
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,
119 * hpt3x3_init_chipset - chip setup
122 * Perform the setup required at boot and on resume.
125 static void hpt3x3_init_chipset(struct pci_dev *dev)
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);
135 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);
139 * hpt3x3_init_one - Initialise an HPT343/363
141 * @id: Entry in match table
143 * Perform basic initialisation. We set the device up so we access all
144 * ports via BAR4. This is neccessary to work around errata.
147 static int hpt3x3_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
149 static int printed_version;
150 static const struct ata_port_info info = {
151 .flags = ATA_FLAG_SLAVE_POSS,
153 #if defined(CONFIG_PATA_HPT3X3_DMA)
154 /* Further debug needed */
158 .port_ops = &hpt3x3_port_ops
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;
168 hpt3x3_init_chipset(pdev);
170 if (!printed_version++)
171 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
173 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2);
176 /* acquire resources and fill host */
177 rc = pcim_enable_device(pdev);
181 /* Everything is relative to BAR4 if we set up this way */
182 rc = pcim_iomap_regions(pdev, 1 << 4, DRV_NAME);
184 pcim_pin_device(pdev);
187 host->iomap = pcim_iomap_table(pdev);
188 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
191 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
195 base = host->iomap[4]; /* Bus mastering base */
197 for (i = 0; i < host->n_ports; i++) {
198 struct ata_port *ap = host->ports[i];
199 struct ata_ioports *ioaddr = &ap->ioaddr;
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_sff_std_ports(ioaddr);
206 ioaddr->bmdma_addr = base + 8 * i;
208 ata_port_pbar_desc(ap, 4, -1, "ioport");
209 ata_port_pbar_desc(ap, 4, offset_cmd[i], "cmd");
211 pci_set_master(pdev);
212 return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
213 IRQF_SHARED, &hpt3x3_sht);
217 static int hpt3x3_reinit_one(struct pci_dev *dev)
219 hpt3x3_init_chipset(dev);
220 return ata_pci_device_resume(dev);
224 static const struct pci_device_id hpt3x3[] = {
225 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT343), },
230 static struct pci_driver hpt3x3_pci_driver = {
233 .probe = hpt3x3_init_one,
234 .remove = ata_pci_remove_one,
236 .suspend = ata_pci_device_suspend,
237 .resume = hpt3x3_reinit_one,
241 static int __init hpt3x3_init(void)
243 return pci_register_driver(&hpt3x3_pci_driver);
247 static void __exit hpt3x3_exit(void)
249 pci_unregister_driver(&hpt3x3_pci_driver);
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);
259 module_init(hpt3x3_init);
260 module_exit(hpt3x3_exit);