2 * pata_cypress.c - Cypress PATA for new ATA layer
4 * Alan Cox <alan@redhat.com>
7 * linux/drivers/ide/pci/cy82c693.c Version 0.40 Sep. 10, 2002
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/pci.h>
14 #include <linux/init.h>
15 #include <linux/blkdev.h>
16 #include <linux/delay.h>
17 #include <scsi/scsi_host.h>
18 #include <linux/libata.h>
20 #define DRV_NAME "pata_cypress"
21 #define DRV_VERSION "0.1.2"
23 /* here are the offset definitions for the registers */
26 CY82_IDE_CMDREG = 0x04,
27 CY82_IDE_ADDRSETUP = 0x48,
28 CY82_IDE_MASTER_IOR = 0x4C,
29 CY82_IDE_MASTER_IOW = 0x4D,
30 CY82_IDE_SLAVE_IOR = 0x4E,
31 CY82_IDE_SLAVE_IOW = 0x4F,
32 CY82_IDE_MASTER_8BIT = 0x50,
33 CY82_IDE_SLAVE_8BIT = 0x51,
35 CY82_INDEX_PORT = 0x22,
36 CY82_DATA_PORT = 0x23,
38 CY82_INDEX_CTRLREG1 = 0x01,
39 CY82_INDEX_CHANNEL0 = 0x30,
40 CY82_INDEX_CHANNEL1 = 0x31,
41 CY82_INDEX_TIMEOUT = 0x32
44 static int cy82c693_pre_reset(struct ata_port *ap)
46 ap->cbl = ATA_CBL_PATA40;
47 return ata_std_prereset(ap);
50 static void cy82c693_error_handler(struct ata_port *ap)
52 ata_bmdma_drive_eh(ap, cy82c693_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
56 * cy82c693_set_piomode - set initial PIO mode data
60 * Called to do the PIO mode setup.
63 static void cy82c693_set_piomode(struct ata_port *ap, struct ata_device *adev)
65 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
67 const unsigned long T = 1000000 / 33;
68 short time_16, time_8;
71 if (ata_timing_compute(adev, adev->pio_mode, &t, T, 1) < 0) {
72 printk(KERN_ERR DRV_NAME ": mome computation failed.\n");
76 time_16 = FIT(t.recover, 0, 15) | (FIT(t.active, 0, 15) << 4);
77 time_8 = FIT(t.act8b, 0, 15) | (FIT(t.rec8b, 0, 15) << 4);
79 if (adev->devno == 0) {
80 pci_read_config_dword(pdev, CY82_IDE_ADDRSETUP, &addr);
82 addr &= ~0x0F; /* Mask bits */
83 addr |= FIT(t.setup, 0, 15);
85 pci_write_config_dword(pdev, CY82_IDE_ADDRSETUP, addr);
86 pci_write_config_byte(pdev, CY82_IDE_MASTER_IOR, time_16);
87 pci_write_config_byte(pdev, CY82_IDE_MASTER_IOW, time_16);
88 pci_write_config_byte(pdev, CY82_IDE_MASTER_8BIT, time_8);
90 pci_read_config_dword(pdev, CY82_IDE_ADDRSETUP, &addr);
92 addr &= ~0xF0; /* Mask bits */
93 addr |= (FIT(t.setup, 0, 15) << 4);
95 pci_write_config_dword(pdev, CY82_IDE_ADDRSETUP, addr);
96 pci_write_config_byte(pdev, CY82_IDE_SLAVE_IOR, time_16);
97 pci_write_config_byte(pdev, CY82_IDE_SLAVE_IOW, time_16);
98 pci_write_config_byte(pdev, CY82_IDE_SLAVE_8BIT, time_8);
103 * cy82c693_set_dmamode - set initial DMA mode data
107 * Called to do the DMA mode setup.
110 static void cy82c693_set_dmamode(struct ata_port *ap, struct ata_device *adev)
112 int reg = CY82_INDEX_CHANNEL0 + ap->port_no;
114 /* Be afraid, be very afraid. Magic registers in low I/O space */
116 outb(adev->dma_mode - XFER_MW_DMA_0, 0x23);
118 /* 0x50 gives the best behaviour on the Alpha's using this chip */
119 outb(CY82_INDEX_TIMEOUT, 0x22);
123 static struct scsi_host_template cy82c693_sht = {
124 .module = THIS_MODULE,
126 .ioctl = ata_scsi_ioctl,
127 .queuecommand = ata_scsi_queuecmd,
128 .can_queue = ATA_DEF_QUEUE,
129 .this_id = ATA_SHT_THIS_ID,
130 .sg_tablesize = LIBATA_MAX_PRD,
131 .max_sectors = ATA_MAX_SECTORS,
132 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
133 .emulated = ATA_SHT_EMULATED,
134 .use_clustering = ATA_SHT_USE_CLUSTERING,
135 .proc_name = DRV_NAME,
136 .dma_boundary = ATA_DMA_BOUNDARY,
137 .slave_configure = ata_scsi_slave_config,
138 .bios_param = ata_std_bios_param,
141 static struct ata_port_operations cy82c693_port_ops = {
142 .port_disable = ata_port_disable,
143 .set_piomode = cy82c693_set_piomode,
144 .set_dmamode = cy82c693_set_dmamode,
145 .mode_filter = ata_pci_default_filter,
147 .tf_load = ata_tf_load,
148 .tf_read = ata_tf_read,
149 .check_status = ata_check_status,
150 .exec_command = ata_exec_command,
151 .dev_select = ata_std_dev_select,
153 .freeze = ata_bmdma_freeze,
154 .thaw = ata_bmdma_thaw,
155 .error_handler = cy82c693_error_handler,
156 .post_internal_cmd = ata_bmdma_post_internal_cmd,
158 .bmdma_setup = ata_bmdma_setup,
159 .bmdma_start = ata_bmdma_start,
160 .bmdma_stop = ata_bmdma_stop,
161 .bmdma_status = ata_bmdma_status,
163 .qc_prep = ata_qc_prep,
164 .qc_issue = ata_qc_issue_prot,
165 .eng_timeout = ata_eng_timeout,
166 .data_xfer = ata_pio_data_xfer,
168 .irq_handler = ata_interrupt,
169 .irq_clear = ata_bmdma_irq_clear,
171 .port_start = ata_port_start,
172 .port_stop = ata_port_stop,
173 .host_stop = ata_host_stop
176 static int cy82c693_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
178 static struct ata_port_info info = {
179 .sht = &cy82c693_sht,
180 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
183 .port_ops = &cy82c693_port_ops
185 static struct ata_port_info *port_info[1] = { &info };
187 /* Devfn 1 is the ATA primary. The secondary is magic and on devfn2. For the
188 moment we don't handle the secondary. FIXME */
190 if (PCI_FUNC(pdev->devfn) != 1)
193 return ata_pci_init_one(pdev, port_info, 1);
196 static struct pci_device_id cy82c693[] = {
197 { PCI_VENDOR_ID_CONTAQ, PCI_DEVICE_ID_CONTAQ_82C693, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
201 static struct pci_driver cy82c693_pci_driver = {
203 .id_table = cy82c693,
204 .probe = cy82c693_init_one,
205 .remove = ata_pci_remove_one
208 static int __init cy82c693_init(void)
210 return pci_register_driver(&cy82c693_pci_driver);
214 static void __exit cy82c693_exit(void)
216 pci_unregister_driver(&cy82c693_pci_driver);
220 MODULE_AUTHOR("Alan Cox");
221 MODULE_DESCRIPTION("low-level driver for the CY82C693 PATA controller");
222 MODULE_LICENSE("GPL");
223 MODULE_DEVICE_TABLE(pci, cy82c693);
224 MODULE_VERSION(DRV_VERSION);
226 module_init(cy82c693_init);
227 module_exit(cy82c693_exit);