1/*
2 * pata_ninja32.c - Ninja32 PATA for new ATA layer
3 * (C) 2007 Red Hat Inc
4 *
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
9 * timing parameters.
10 *
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
14 * ITOH Yasufumi.
15 *
16 * Base + 0x00 IRQ Status
17 * Base + 0x01 IRQ control
18 * Base + 0x02 Chipset control
19 * Base + 0x03 Unknown
20 * Base + 0x04 VDMA and reset control + wait bits
21 * Base + 0x08 BMIMBA
22 * Base + 0x0C DMA Length
23 * Base + 0x10 Taskfile
24 * Base + 0x18 BMDMA Status ?
25 * Base + 0x1C
26 * Base + 0x1D Bus master control
27 * bit 0 = enable
28 * bit 1 = 0 write/1 read
29 * bit 2 = 1 sgtable
30 * bit 3 = go
31 * bit 4-6 wait bits
32 * bit 7 = done
33 * Base + 0x1E AltStatus
34 * Base + 0x1F timing register
35 */
36
37#include <linux/kernel.h>
38#include <linux/module.h>
39#include <linux/pci.h>
40#include <linux/blkdev.h>
41#include <linux/delay.h>
42#include <scsi/scsi_host.h>
43#include <linux/libata.h>
44
45#define DRV_NAME "pata_ninja32"
46#define DRV_VERSION "0.1.5"
47
48
49/**
50 * ninja32_set_piomode - set initial PIO mode data
51 * @ap: ATA interface
52 * @adev: ATA device
53 *
54 * Called to do the PIO mode setup. Our timing registers are shared
55 * but we want to set the PIO timing by default.
56 */
57
58static void ninja32_set_piomode(struct ata_port *ap, struct ata_device *adev)
59{
60 static u16 pio_timing[5] = {
61 0xd6, 0x85, 0x44, 0x33, 0x13
62 };
63 iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0],
64 ap->ioaddr.bmdma_addr + 0x1f);
65 ap->private_data = adev;
66}
67
68
69static void ninja32_dev_select(struct ata_port *ap, unsigned int device)
70{
71 struct ata_device *adev = &ap->link.device[device];
72 if (ap->private_data != adev) {
73 iowrite8(0xd6, ap->ioaddr.bmdma_addr + 0x1f);
74 ata_sff_dev_select(ap, device);
75 ninja32_set_piomode(ap, adev);
76 }
77}
78
79static struct scsi_host_template ninja32_sht = {
80 ATA_BMDMA_SHT(DRV_NAME),
81};
82
83static struct ata_port_operations ninja32_port_ops = {
84 .inherits = &ata_bmdma_port_ops,
85 .sff_dev_select = ninja32_dev_select,
86 .cable_detect = ata_cable_40wire,
87 .set_piomode = ninja32_set_piomode,
88 .sff_data_xfer = ata_sff_data_xfer32
89};
90
91static void ninja32_program(void __iomem *base)
92{
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 */
100}
101
102static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
103{
104 struct ata_host *host;
105 struct ata_port *ap;
106 void __iomem *base;
107 int rc;
108
109 host = ata_host_alloc(&dev->dev, 1);
110 if (!host)
111 return -ENOMEM;
112 ap = host->ports[0];
113
114 /* Set up the PCI device */
115 rc = pcim_enable_device(dev);
116 if (rc)
117 return rc;
118 rc = pcim_iomap_regions(dev, 1 << 0, DRV_NAME);
119 if (rc == -EBUSY)
120 pcim_pin_device(dev);
121 if (rc)
122 return rc;
123
124 host->iomap = pcim_iomap_table(dev);
125 rc = dma_set_mask(&dev->dev, ATA_DMA_MASK);
126 if (rc)
127 return rc;
128 rc = dma_set_coherent_mask(&dev->dev, ATA_DMA_MASK);
129 if (rc)
130 return rc;
131 pci_set_master(dev);
132
133 /* Set up the register mappings. We use the I/O mapping as only the
134 older chips also have MMIO on BAR 1 */
135 base = host->iomap[0];
136 if (!base)
137 return -ENOMEM;
138 ap->ops = &ninja32_port_ops;
139 ap->pio_mask = ATA_PIO4;
140 ap->flags |= ATA_FLAG_SLAVE_POSS;
141
142 ap->ioaddr.cmd_addr = base + 0x10;
143 ap->ioaddr.ctl_addr = base + 0x1E;
144 ap->ioaddr.altstatus_addr = base + 0x1E;
145 ap->ioaddr.bmdma_addr = base;
146 ata_sff_std_ports(&ap->ioaddr);
147 ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
148
149 ninja32_program(base);
150 /* FIXME: Should we disable them at remove ? */
151 return ata_host_activate(host, dev->irq, ata_bmdma_interrupt,
152 IRQF_SHARED, &ninja32_sht);
153}
154
155#ifdef CONFIG_PM_SLEEP
156static int ninja32_reinit_one(struct pci_dev *pdev)
157{
158 struct ata_host *host = pci_get_drvdata(pdev);
159 int rc;
160
161 rc = ata_pci_device_do_resume(pdev);
162 if (rc)
163 return rc;
164 ninja32_program(host->iomap[0]);
165 ata_host_resume(host);
166 return 0;
167}
168#endif
169
170static const struct pci_device_id ninja32[] = {
171 { 0x10FC, 0x0003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
172 { 0x1145, 0x8008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
173 { 0x1145, 0xf008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
174 { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
175 { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
176 { 0x1145, 0xf02C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
177 { },
178};
179
180static struct pci_driver ninja32_pci_driver = {
181 .name = DRV_NAME,
182 .id_table = ninja32,
183 .probe = ninja32_init_one,
184 .remove = ata_pci_remove_one,
185#ifdef CONFIG_PM_SLEEP
186 .suspend = ata_pci_device_suspend,
187 .resume = ninja32_reinit_one,
188#endif
189};
190
191module_pci_driver(ninja32_pci_driver);
192
193MODULE_AUTHOR("Alan Cox");
194MODULE_DESCRIPTION("low-level driver for Ninja32 ATA");
195MODULE_LICENSE("GPL");
196MODULE_DEVICE_TABLE(pci, ninja32);
197MODULE_VERSION(DRV_VERSION);
198