2 * pata_ninja32.c - Ninja32 PATA for new ATA layer
5 * Note: The controller like many controllers has shared timings for
6 * PIO and DMA. We thus flip to the DMA timings in dma_start and flip back
7 * in the dma_stop function. Thus we actually don't need a set_dmamode
8 * method as the PIO method is always called and will set the right PIO
11 * The Ninja32 Cardbus is not a generic SFF controller. Instead it is
12 * laid out as follows off BAR 0. This is based upon Mark Lord's delkin
13 * driver and the extensive analysis done by the BSD developers, notably
16 * Base + 0x00 IRQ Status
17 * Base + 0x01 IRQ control
18 * Base + 0x02 Chipset control
20 * Base + 0x04 VDMA and reset control + wait bits
22 * Base + 0x0C DMA Length
23 * Base + 0x10 Taskfile
24 * Base + 0x18 BMDMA Status ?
26 * Base + 0x1D Bus master control
28 * bit 1 = 0 write/1 read
33 * Base + 0x1E AltStatus
34 * Base + 0x1F timing register
37 #include <linux/kernel.h>
38 #include <linux/module.h>
39 #include <linux/pci.h>
40 #include <linux/init.h>
41 #include <linux/blkdev.h>
42 #include <linux/delay.h>
43 #include <scsi/scsi_host.h>
44 #include <linux/libata.h>
46 #define DRV_NAME "pata_ninja32"
47 #define DRV_VERSION "0.1.1"
51 * ninja32_set_piomode - set initial PIO mode data
55 * Called to do the PIO mode setup. Our timing registers are shared
56 * but we want to set the PIO timing by default.
59 static void ninja32_set_piomode(struct ata_port *ap, struct ata_device *adev)
61 static u16 pio_timing[5] = {
62 0xd6, 0x85, 0x44, 0x33, 0x13
64 iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0],
65 ap->ioaddr.bmdma_addr + 0x1f);
66 ap->private_data = adev;
70 static void ninja32_dev_select(struct ata_port *ap, unsigned int device)
72 struct ata_device *adev = &ap->link.device[device];
73 if (ap->private_data != adev) {
74 iowrite8(0xd6, ap->ioaddr.bmdma_addr + 0x1f);
75 ata_sff_dev_select(ap, device);
76 ninja32_set_piomode(ap, adev);
80 static struct scsi_host_template ninja32_sht = {
81 ATA_BMDMA_SHT(DRV_NAME),
84 static struct ata_port_operations ninja32_port_ops = {
85 .inherits = &ata_bmdma_port_ops,
86 .sff_dev_select = ninja32_dev_select,
87 .cable_detect = ata_cable_40wire,
88 .set_piomode = ninja32_set_piomode,
91 static void ninja32_program(void __iomem *base)
93 iowrite8(0x05, base + 0x01); /* Enable interrupt lines */
94 iowrite8(0xBE, base + 0x02); /* Burst, ?? setup */
95 iowrite8(0x01, base + 0x03); /* Unknown */
96 iowrite8(0x20, base + 0x04); /* WAIT0 */
97 iowrite8(0x8f, base + 0x05); /* Unknown */
98 iowrite8(0xa4, base + 0x1c); /* Unknown */
99 iowrite8(0x83, base + 0x1d); /* BMDMA control: WAIT0 */
102 static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
104 struct ata_host *host;
109 host = ata_host_alloc(&dev->dev, 1);
114 /* Set up the PCI device */
115 rc = pcim_enable_device(dev);
118 rc = pcim_iomap_regions(dev, 1 << 0, DRV_NAME);
120 pcim_pin_device(dev);
124 host->iomap = pcim_iomap_table(dev);
125 rc = pci_set_dma_mask(dev, ATA_DMA_MASK);
128 rc = pci_set_consistent_dma_mask(dev, ATA_DMA_MASK);
133 /* Set up the register mappings */
134 base = host->iomap[0];
137 ap->ops = &ninja32_port_ops;
139 ap->flags |= ATA_FLAG_SLAVE_POSS;
141 ap->ioaddr.cmd_addr = base + 0x10;
142 ap->ioaddr.ctl_addr = base + 0x1E;
143 ap->ioaddr.altstatus_addr = base + 0x1E;
144 ap->ioaddr.bmdma_addr = base;
145 ata_sff_std_ports(&ap->ioaddr);
147 ninja32_program(base);
148 /* FIXME: Should we disable them at remove ? */
149 return ata_host_activate(host, dev->irq, ata_sff_interrupt,
150 IRQF_SHARED, &ninja32_sht);
155 static int ninja32_reinit_one(struct pci_dev *pdev)
157 struct ata_host *host = dev_get_drvdata(&pdev->dev);
160 rc = ata_pci_device_do_resume(pdev);
163 ninja32_program(host->iomap[0]);
164 ata_host_resume(host);
169 static const struct pci_device_id ninja32[] = {
170 { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
171 { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
175 static struct pci_driver ninja32_pci_driver = {
178 .probe = ninja32_init_one,
179 .remove = ata_pci_remove_one,
181 .suspend = ata_pci_device_suspend,
182 .resume = ninja32_reinit_one,
186 static int __init ninja32_init(void)
188 return pci_register_driver(&ninja32_pci_driver);
191 static void __exit ninja32_exit(void)
193 pci_unregister_driver(&ninja32_pci_driver);
196 MODULE_AUTHOR("Alan Cox");
197 MODULE_DESCRIPTION("low-level driver for Ninja32 ATA");
198 MODULE_LICENSE("GPL");
199 MODULE_DEVICE_TABLE(pci, ninja32);
200 MODULE_VERSION(DRV_VERSION);
202 module_init(ninja32_init);
203 module_exit(ninja32_exit);