Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 1 | /* |
| 2 | * pata_qdi.c - QDI VLB ATA controllers |
Alan Cox | ab77163 | 2008-10-27 15:09:10 +0000 | [diff] [blame] | 3 | * (C) 2006 Red Hat |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 4 | * |
| 5 | * This driver mostly exists as a proof of concept for non PCI devices under |
| 6 | * libata. While the QDI6580 was 'neat' in 1993 it is no longer terribly |
| 7 | * useful. |
| 8 | * |
| 9 | * Tuning code written from the documentation at |
| 10 | * http://www.ryston.cz/petr/vlb/qd6500.html |
| 11 | * http://www.ryston.cz/petr/vlb/qd6580.html |
| 12 | * |
| 13 | * Probe code based on drivers/ide/legacy/qd65xx.c |
| 14 | * Rewritten from the work of Colten Edwards <pje120@cs.usask.ca> by |
| 15 | * Samuel Thibault <samuel.thibault@fnac.net> |
| 16 | */ |
| 17 | |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/pci.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/blkdev.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <scsi/scsi_host.h> |
| 25 | #include <linux/libata.h> |
| 26 | #include <linux/platform_device.h> |
| 27 | |
| 28 | #define DRV_NAME "pata_qdi" |
Jeff Garzik | 8bc3fc4 | 2007-05-21 20:26:38 -0400 | [diff] [blame] | 29 | #define DRV_VERSION "0.3.1" |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 30 | |
| 31 | #define NR_HOST 4 /* Two 6580s */ |
| 32 | |
| 33 | struct qdi_data { |
| 34 | unsigned long timing; |
| 35 | u8 clock[2]; |
| 36 | u8 last; |
| 37 | int fast; |
| 38 | struct platform_device *platform_dev; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 39 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 40 | }; |
| 41 | |
| 42 | static struct ata_host *qdi_host[NR_HOST]; |
| 43 | static struct qdi_data qdi_data[NR_HOST]; |
| 44 | static int nr_qdi_host; |
| 45 | |
| 46 | #ifdef MODULE |
| 47 | static int probe_qdi = 1; |
| 48 | #else |
| 49 | static int probe_qdi; |
| 50 | #endif |
| 51 | |
| 52 | static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev) |
| 53 | { |
| 54 | struct ata_timing t; |
| 55 | struct qdi_data *qdi = ap->host->private_data; |
| 56 | int active, recovery; |
| 57 | u8 timing; |
| 58 | |
| 59 | /* Get the timing data in cycles */ |
| 60 | ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 61 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 62 | if (qdi->fast) { |
Harvey Harrison | 07633b5 | 2008-05-14 16:17:00 -0700 | [diff] [blame] | 63 | active = 8 - clamp_val(t.active, 1, 8); |
| 64 | recovery = 18 - clamp_val(t.recover, 3, 18); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 65 | } else { |
Harvey Harrison | 07633b5 | 2008-05-14 16:17:00 -0700 | [diff] [blame] | 66 | active = 9 - clamp_val(t.active, 2, 9); |
| 67 | recovery = 15 - clamp_val(t.recover, 0, 15); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 68 | } |
| 69 | timing = (recovery << 4) | active | 0x08; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 70 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 71 | qdi->clock[adev->devno] = timing; |
| 72 | |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 73 | outb(timing, qdi->timing); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev) |
| 77 | { |
| 78 | struct ata_timing t; |
| 79 | struct qdi_data *qdi = ap->host->private_data; |
| 80 | int active, recovery; |
| 81 | u8 timing; |
| 82 | |
| 83 | /* Get the timing data in cycles */ |
| 84 | ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 85 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 86 | if (qdi->fast) { |
Harvey Harrison | 07633b5 | 2008-05-14 16:17:00 -0700 | [diff] [blame] | 87 | active = 8 - clamp_val(t.active, 1, 8); |
| 88 | recovery = 18 - clamp_val(t.recover, 3, 18); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 89 | } else { |
Harvey Harrison | 07633b5 | 2008-05-14 16:17:00 -0700 | [diff] [blame] | 90 | active = 9 - clamp_val(t.active, 2, 9); |
| 91 | recovery = 15 - clamp_val(t.recover, 0, 15); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 92 | } |
| 93 | timing = (recovery << 4) | active | 0x08; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 94 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 95 | qdi->clock[adev->devno] = timing; |
| 96 | |
| 97 | outb(timing, qdi->timing); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 98 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 99 | /* Clear the FIFO */ |
| 100 | if (adev->class != ATA_DEV_ATA) |
| 101 | outb(0x5F, (qdi->timing & 0xFFF0) + 3); |
| 102 | } |
| 103 | |
| 104 | /** |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 105 | * qdi_qc_issue - command issue |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 106 | * @qc: command pending |
| 107 | * |
| 108 | * Called when the libata layer is about to issue a command. We wrap |
| 109 | * this interface so that we can load the correct ATA timings. |
| 110 | */ |
| 111 | |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 112 | static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 113 | { |
| 114 | struct ata_port *ap = qc->ap; |
| 115 | struct ata_device *adev = qc->dev; |
| 116 | struct qdi_data *qdi = ap->host->private_data; |
| 117 | |
| 118 | if (qdi->clock[adev->devno] != qdi->last) { |
| 119 | if (adev->pio_mode) { |
| 120 | qdi->last = qdi->clock[adev->devno]; |
| 121 | outb(qdi->clock[adev->devno], qdi->timing); |
| 122 | } |
| 123 | } |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 124 | return ata_sff_qc_issue(qc); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 125 | } |
| 126 | |
Tejun Heo | 55dba31 | 2007-12-05 16:43:07 +0900 | [diff] [blame] | 127 | static unsigned int qdi_data_xfer(struct ata_device *dev, unsigned char *buf, |
| 128 | unsigned int buflen, int rw) |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 129 | { |
Tejun Heo | 55dba31 | 2007-12-05 16:43:07 +0900 | [diff] [blame] | 130 | if (ata_id_has_dword_io(dev->id)) { |
| 131 | struct ata_port *ap = dev->link->ap; |
| 132 | int slop = buflen & 3; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 133 | |
Tejun Heo | 55dba31 | 2007-12-05 16:43:07 +0900 | [diff] [blame] | 134 | if (rw == READ) |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 135 | ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); |
Tejun Heo | 55dba31 | 2007-12-05 16:43:07 +0900 | [diff] [blame] | 136 | else |
| 137 | iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 138 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 139 | if (unlikely(slop)) { |
Harvey Harrison | 6ad6740 | 2008-06-18 17:16:43 -0700 | [diff] [blame] | 140 | __le32 pad; |
Tejun Heo | 55dba31 | 2007-12-05 16:43:07 +0900 | [diff] [blame] | 141 | if (rw == READ) { |
Al Viro | b50e56d | 2008-01-12 14:16:14 +0000 | [diff] [blame] | 142 | pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 143 | memcpy(buf + buflen - slop, &pad, slop); |
Tejun Heo | 55dba31 | 2007-12-05 16:43:07 +0900 | [diff] [blame] | 144 | } else { |
| 145 | memcpy(&pad, buf + buflen - slop, slop); |
| 146 | iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 147 | } |
Tejun Heo | 55dba31 | 2007-12-05 16:43:07 +0900 | [diff] [blame] | 148 | buflen += 4 - slop; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 149 | } |
| 150 | } else |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 151 | buflen = ata_sff_data_xfer(dev, buf, buflen, rw); |
Tejun Heo | 55dba31 | 2007-12-05 16:43:07 +0900 | [diff] [blame] | 152 | |
| 153 | return buflen; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | static struct scsi_host_template qdi_sht = { |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 157 | ATA_PIO_SHT(DRV_NAME), |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 158 | }; |
| 159 | |
| 160 | static struct ata_port_operations qdi6500_port_ops = { |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 161 | .inherits = &ata_sff_port_ops, |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 162 | .qc_issue = qdi_qc_issue, |
Tejun Heo | 5682ed3 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 163 | .sff_data_xfer = qdi_data_xfer, |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 164 | .cable_detect = ata_cable_40wire, |
| 165 | .set_piomode = qdi6500_set_piomode, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 166 | }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 167 | |
| 168 | static struct ata_port_operations qdi6580_port_ops = { |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 169 | .inherits = &qdi6500_port_ops, |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 170 | .set_piomode = qdi6580_set_piomode, |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 171 | }; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 172 | |
| 173 | /** |
| 174 | * qdi_init_one - attach a qdi interface |
| 175 | * @type: Type to display |
| 176 | * @io: I/O port start |
| 177 | * @irq: interrupt line |
| 178 | * @fast: True if on a > 33Mhz VLB |
| 179 | * |
| 180 | * Register an ISA bus IDE interface. Such interfaces are PIO and we |
| 181 | * assume do not support IRQ sharing. |
| 182 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 183 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 184 | static __init int qdi_init_one(unsigned long port, int type, unsigned long io, int irq, int fast) |
| 185 | { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 186 | unsigned long ctl = io + 0x206; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 187 | struct platform_device *pdev; |
Tejun Heo | 5d72882 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 188 | struct ata_host *host; |
| 189 | struct ata_port *ap; |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 190 | void __iomem *io_addr, *ctl_addr; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 191 | int ret; |
| 192 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 193 | /* |
| 194 | * Fill in a probe structure first of all |
| 195 | */ |
| 196 | |
| 197 | pdev = platform_device_register_simple(DRV_NAME, nr_qdi_host, NULL, 0); |
Akinobu Mita | 9825d73 | 2006-12-15 13:08:51 -0800 | [diff] [blame] | 198 | if (IS_ERR(pdev)) |
| 199 | return PTR_ERR(pdev); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 200 | |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 201 | ret = -ENOMEM; |
| 202 | io_addr = devm_ioport_map(&pdev->dev, io, 8); |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 203 | ctl_addr = devm_ioport_map(&pdev->dev, ctl, 1); |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 204 | if (!io_addr || !ctl_addr) |
| 205 | goto fail; |
| 206 | |
Tejun Heo | 5d72882 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 207 | ret = -ENOMEM; |
| 208 | host = ata_host_alloc(&pdev->dev, 1); |
| 209 | if (!host) |
| 210 | goto fail; |
| 211 | ap = host->ports[0]; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 212 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 213 | if (type == 6580) { |
Tejun Heo | 5d72882 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 214 | ap->ops = &qdi6580_port_ops; |
| 215 | ap->pio_mask = 0x1F; |
| 216 | ap->flags |= ATA_FLAG_SLAVE_POSS; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 217 | } else { |
Tejun Heo | 5d72882 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 218 | ap->ops = &qdi6500_port_ops; |
| 219 | ap->pio_mask = 0x07; /* Actually PIO3 !IORDY is possible */ |
| 220 | ap->flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 221 | } |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 222 | |
Tejun Heo | 5d72882 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 223 | ap->ioaddr.cmd_addr = io_addr; |
| 224 | ap->ioaddr.altstatus_addr = ctl_addr; |
| 225 | ap->ioaddr.ctl_addr = ctl_addr; |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 226 | ata_sff_std_ports(&ap->ioaddr); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 227 | |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 228 | ata_port_desc(ap, "cmd %lx ctl %lx", io, ctl); |
| 229 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 230 | /* |
| 231 | * Hook in a private data structure per channel |
| 232 | */ |
Tejun Heo | 5d72882 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 233 | ap->private_data = &qdi_data[nr_qdi_host]; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 234 | |
| 235 | qdi_data[nr_qdi_host].timing = port; |
| 236 | qdi_data[nr_qdi_host].fast = fast; |
| 237 | qdi_data[nr_qdi_host].platform_dev = pdev; |
| 238 | |
| 239 | printk(KERN_INFO DRV_NAME": qd%d at 0x%lx.\n", type, io); |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 240 | |
Tejun Heo | 5d72882 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 241 | /* activate */ |
Tejun Heo | 9363c38 | 2008-04-07 22:47:16 +0900 | [diff] [blame] | 242 | ret = ata_host_activate(host, irq, ata_sff_interrupt, 0, &qdi_sht); |
Tejun Heo | 5d72882 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 243 | if (ret) |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 244 | goto fail; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 245 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 246 | qdi_host[nr_qdi_host++] = dev_get_drvdata(&pdev->dev); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 247 | return 0; |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 248 | |
| 249 | fail: |
| 250 | platform_device_unregister(pdev); |
| 251 | return ret; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | /** |
| 255 | * qdi_init - attach qdi interfaces |
| 256 | * |
| 257 | * Attach qdi IDE interfaces by scanning the ports it may occupy. |
| 258 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 259 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 260 | static __init int qdi_init(void) |
| 261 | { |
| 262 | unsigned long flags; |
| 263 | static const unsigned long qd_port[2] = { 0x30, 0xB0 }; |
| 264 | static const unsigned long ide_port[2] = { 0x170, 0x1F0 }; |
| 265 | static const int ide_irq[2] = { 14, 15 }; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 266 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 267 | int ct = 0; |
| 268 | int i; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 269 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 270 | if (probe_qdi == 0) |
| 271 | return -ENODEV; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 272 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 273 | /* |
| 274 | * Check each possible QD65xx base address |
| 275 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 276 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 277 | for (i = 0; i < 2; i++) { |
| 278 | unsigned long port = qd_port[i]; |
| 279 | u8 r, res; |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 280 | |
| 281 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 282 | if (request_region(port, 2, "pata_qdi")) { |
| 283 | /* Check for a card */ |
| 284 | local_irq_save(flags); |
| 285 | r = inb_p(port); |
| 286 | outb_p(0x19, port); |
| 287 | res = inb_p(port); |
| 288 | outb_p(r, port); |
| 289 | local_irq_restore(flags); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 290 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 291 | /* Fail */ |
| 292 | if (res == 0x19) |
| 293 | { |
| 294 | release_region(port, 2); |
| 295 | continue; |
| 296 | } |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 297 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 298 | /* Passes the presence test */ |
| 299 | r = inb_p(port + 1); /* Check port agrees with port set */ |
| 300 | if ((r & 2) >> 1 != i) { |
| 301 | release_region(port, 2); |
| 302 | continue; |
| 303 | } |
| 304 | |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 305 | /* Check card type */ |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 306 | if ((r & 0xF0) == 0xC0) { |
| 307 | /* QD6500: single channel */ |
| 308 | if (r & 8) { |
| 309 | /* Disabled ? */ |
| 310 | release_region(port, 2); |
| 311 | continue; |
| 312 | } |
Alan Cox | cc7c15e | 2007-03-02 14:56:35 +0000 | [diff] [blame] | 313 | if (qdi_init_one(port, 6500, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0) |
| 314 | ct++; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 315 | } |
| 316 | if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) { |
| 317 | /* QD6580: dual channel */ |
| 318 | if (!request_region(port + 2 , 2, "pata_qdi")) |
| 319 | { |
| 320 | release_region(port, 2); |
| 321 | continue; |
| 322 | } |
| 323 | res = inb(port + 3); |
| 324 | if (res & 1) { |
| 325 | /* Single channel mode */ |
Samuel Thibault | 6878cce | 2007-05-03 11:30:25 +0200 | [diff] [blame] | 326 | if (qdi_init_one(port, 6580, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0) |
Alan Cox | cc7c15e | 2007-03-02 14:56:35 +0000 | [diff] [blame] | 327 | ct++; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 328 | } else { |
| 329 | /* Dual channel mode */ |
Alan Cox | cc7c15e | 2007-03-02 14:56:35 +0000 | [diff] [blame] | 330 | if (qdi_init_one(port, 6580, 0x1F0, 14, r & 0x04) == 0) |
| 331 | ct++; |
| 332 | if (qdi_init_one(port + 2, 6580, 0x170, 15, r & 0x04) == 0) |
| 333 | ct++; |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 334 | } |
| 335 | } |
| 336 | } |
| 337 | } |
| 338 | if (ct != 0) |
| 339 | return 0; |
| 340 | return -ENODEV; |
| 341 | } |
| 342 | |
| 343 | static __exit void qdi_exit(void) |
| 344 | { |
| 345 | int i; |
| 346 | |
| 347 | for (i = 0; i < nr_qdi_host; i++) { |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 348 | ata_host_detach(qdi_host[i]); |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 349 | /* Free the control resource. The 6580 dual channel has the resources |
| 350 | * claimed as a pair of 2 byte resources so we need no special cases... |
| 351 | */ |
| 352 | release_region(qdi_data[i].timing, 2); |
| 353 | platform_device_unregister(qdi_data[i].platform_dev); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 354 | } |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | MODULE_AUTHOR("Alan Cox"); |
| 358 | MODULE_DESCRIPTION("low-level driver for qdi ATA"); |
| 359 | MODULE_LICENSE("GPL"); |
| 360 | MODULE_VERSION(DRV_VERSION); |
| 361 | |
| 362 | module_init(qdi_init); |
| 363 | module_exit(qdi_exit); |
| 364 | |
| 365 | module_param(probe_qdi, int, 0); |
| 366 | |