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 "0.4.2"
28 static int hpt3x3_probe_init(struct ata_port *ap)
30 ap->cbl = ATA_CBL_PATA40;
31 return ata_std_prereset(ap);
35 * hpt3x3_probe_reset - reset the hpt3x3 bus
36 * @ap: ATA port to reset
38 * Perform the housekeeping when doing an ATA bus reeset. We just
39 * need to force the cable type.
42 static void hpt3x3_error_handler(struct ata_port *ap)
44 return ata_bmdma_drive_eh(ap, hpt3x3_probe_init, ata_std_softreset, NULL, ata_std_postreset);
48 * hpt3x3_set_piomode - PIO setup
50 * @adev: device on the interface
52 * Set our PIO requirements. This is fairly simple on the HPT3x3 as
53 * all we have to do is clear the MWDMA and UDMA bits then load the
57 static void hpt3x3_set_piomode(struct ata_port *ap, struct ata_device *adev)
59 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
61 int dn = 2 * ap->port_no + adev->devno;
63 pci_read_config_dword(pdev, 0x44, &r1);
64 pci_read_config_dword(pdev, 0x48, &r2);
65 /* Load the PIO timing number */
66 r1 &= ~(7 << (3 * dn));
67 r1 |= (adev->pio_mode - XFER_PIO_0) << (3 * dn);
68 r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */
70 pci_write_config_dword(pdev, 0x44, r1);
71 pci_write_config_dword(pdev, 0x48, r2);
75 * hpt3x3_set_dmamode - DMA timing setup
77 * @adev: Device being configured
79 * Set up the channel for MWDMA or UDMA modes. Much the same as with
80 * PIO, load the mode number and then set MWDMA or UDMA flag.
83 static void hpt3x3_set_dmamode(struct ata_port *ap, struct ata_device *adev)
85 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
87 int dn = 2 * ap->port_no + adev->devno;
88 int mode_num = adev->dma_mode & 0x0F;
90 pci_read_config_dword(pdev, 0x44, &r1);
91 pci_read_config_dword(pdev, 0x48, &r2);
92 /* Load the timing number */
93 r1 &= ~(7 << (3 * dn));
94 r1 |= (mode_num << (3 * dn));
95 r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */
97 if (adev->dma_mode >= XFER_UDMA_0)
98 r2 |= 0x01 << dn; /* Ultra mode */
100 r2 |= 0x10 << dn; /* MWDMA */
102 pci_write_config_dword(pdev, 0x44, r1);
103 pci_write_config_dword(pdev, 0x48, r2);
106 static struct scsi_host_template hpt3x3_sht = {
107 .module = THIS_MODULE,
109 .ioctl = ata_scsi_ioctl,
110 .queuecommand = ata_scsi_queuecmd,
111 .can_queue = ATA_DEF_QUEUE,
112 .this_id = ATA_SHT_THIS_ID,
113 .sg_tablesize = LIBATA_MAX_PRD,
114 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
115 .emulated = ATA_SHT_EMULATED,
116 .use_clustering = ATA_SHT_USE_CLUSTERING,
117 .proc_name = DRV_NAME,
118 .dma_boundary = ATA_DMA_BOUNDARY,
119 .slave_configure = ata_scsi_slave_config,
120 .slave_destroy = ata_scsi_slave_destroy,
121 .bios_param = ata_std_bios_param,
123 .resume = ata_scsi_device_resume,
124 .suspend = ata_scsi_device_suspend,
128 static struct ata_port_operations hpt3x3_port_ops = {
129 .port_disable = ata_port_disable,
130 .set_piomode = hpt3x3_set_piomode,
131 .set_dmamode = hpt3x3_set_dmamode,
132 .mode_filter = ata_pci_default_filter,
134 .tf_load = ata_tf_load,
135 .tf_read = ata_tf_read,
136 .check_status = ata_check_status,
137 .exec_command = ata_exec_command,
138 .dev_select = ata_std_dev_select,
140 .freeze = ata_bmdma_freeze,
141 .thaw = ata_bmdma_thaw,
142 .error_handler = hpt3x3_error_handler,
143 .post_internal_cmd = ata_bmdma_post_internal_cmd,
145 .bmdma_setup = ata_bmdma_setup,
146 .bmdma_start = ata_bmdma_start,
147 .bmdma_stop = ata_bmdma_stop,
148 .bmdma_status = ata_bmdma_status,
150 .qc_prep = ata_qc_prep,
151 .qc_issue = ata_qc_issue_prot,
153 .data_xfer = ata_data_xfer,
155 .irq_handler = ata_interrupt,
156 .irq_clear = ata_bmdma_irq_clear,
157 .irq_on = ata_irq_on,
158 .irq_ack = ata_irq_ack,
160 .port_start = ata_port_start,
164 * hpt3x3_init_chipset - chip setup
167 * Perform the setup required at boot and on resume.
170 static void hpt3x3_init_chipset(struct pci_dev *dev)
173 /* Initialize the board */
174 pci_write_config_word(dev, 0x80, 0x00);
175 /* Check if it is a 343 or a 363. 363 has COMMAND_MEMORY set */
176 pci_read_config_word(dev, PCI_COMMAND, &cmd);
177 if (cmd & PCI_COMMAND_MEMORY)
178 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0);
180 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);
185 * hpt3x3_init_one - Initialise an HPT343/363
187 * @id: Entry in match table
189 * Perform basic initialisation. The chip has a quirk that it won't
190 * function unless it is at XX00. The old ATA driver touched this up
191 * but we leave it for pci quirks to do properly.
194 static int hpt3x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
196 static struct ata_port_info info = {
198 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
202 .port_ops = &hpt3x3_port_ops
204 static struct ata_port_info *port_info[2] = { &info, &info };
206 hpt3x3_init_chipset(dev);
207 /* Now kick off ATA set up */
208 return ata_pci_init_one(dev, port_info, 2);
212 static int hpt3x3_reinit_one(struct pci_dev *dev)
214 hpt3x3_init_chipset(dev);
215 return ata_pci_device_resume(dev);
219 static const struct pci_device_id hpt3x3[] = {
220 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT343), },
225 static struct pci_driver hpt3x3_pci_driver = {
228 .probe = hpt3x3_init_one,
229 .remove = ata_pci_remove_one,
231 .suspend = ata_pci_device_suspend,
232 .resume = hpt3x3_reinit_one,
236 static int __init hpt3x3_init(void)
238 return pci_register_driver(&hpt3x3_pci_driver);
242 static void __exit hpt3x3_exit(void)
244 pci_unregister_driver(&hpt3x3_pci_driver);
248 MODULE_AUTHOR("Alan Cox");
249 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT343/363");
250 MODULE_LICENSE("GPL");
251 MODULE_DEVICE_TABLE(pci, hpt3x3);
252 MODULE_VERSION(DRV_VERSION);
254 module_init(hpt3x3_init);
255 module_exit(hpt3x3_exit);