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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [ata/] [pata_qdi.c] - Blame information for rev 79

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/*
 *    pata_qdi.c - QDI VLB ATA controllers
 *      (C) 2006 Red Hat <alan@redhat.com>
 *
 * This driver mostly exists as a proof of concept for non PCI devices under
 * libata. While the QDI6580 was 'neat' in 1993 it is no longer terribly
 * useful.
 *
 * Tuning code written from the documentation at
 * http://www.ryston.cz/petr/vlb/qd6500.html
 * http://www.ryston.cz/petr/vlb/qd6580.html
 *
 * Probe code based on drivers/ide/legacy/qd65xx.c
 * Rewritten from the work of Colten Edwards <pje120@cs.usask.ca> by
 * Samuel Thibault <samuel.thibault@fnac.net>
 */
 
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/platform_device.h>
 
#define DRV_NAME "pata_qdi"
#define DRV_VERSION "0.3.1"
 
#define NR_HOST 4       /* Two 6580s */
 
struct qdi_data {
        unsigned long timing;
        u8 clock[2];
        u8 last;
        int fast;
        struct platform_device *platform_dev;
 
};
 
static struct ata_host *qdi_host[NR_HOST];
static struct qdi_data qdi_data[NR_HOST];
static int nr_qdi_host;
 
#ifdef MODULE
static int probe_qdi = 1;
#else
static int probe_qdi;
#endif
 
static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
        struct ata_timing t;
        struct qdi_data *qdi = ap->host->private_data;
        int active, recovery;
        u8 timing;
 
        /* Get the timing data in cycles */
        ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
 
        if (qdi->fast) {
                active = 8 - FIT(t.active, 1, 8);
                recovery = 18 - FIT(t.recover, 3, 18);
        } else {
                active = 9 - FIT(t.active, 2, 9);
                recovery = 15 - FIT(t.recover, 0, 15);
        }
        timing = (recovery << 4) | active | 0x08;
 
        qdi->clock[adev->devno] = timing;
 
        outb(timing, qdi->timing);
}
 
static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
        struct ata_timing t;
        struct qdi_data *qdi = ap->host->private_data;
        int active, recovery;
        u8 timing;
 
        /* Get the timing data in cycles */
        ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
 
        if (qdi->fast) {
                active = 8 - FIT(t.active, 1, 8);
                recovery = 18 - FIT(t.recover, 3, 18);
        } else {
                active = 9 - FIT(t.active, 2, 9);
                recovery = 15 - FIT(t.recover, 0, 15);
        }
        timing = (recovery << 4) | active | 0x08;
 
        qdi->clock[adev->devno] = timing;
 
        outb(timing, qdi->timing);
 
        /* Clear the FIFO */
        if (adev->class != ATA_DEV_ATA)
                outb(0x5F, (qdi->timing & 0xFFF0) + 3);
}
 
/**
 *      qdi_qc_issue_prot       -       command issue
 *      @qc: command pending
 *
 *      Called when the libata layer is about to issue a command. We wrap
 *      this interface so that we can load the correct ATA timings.
 */
 
static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc)
{
        struct ata_port *ap = qc->ap;
        struct ata_device *adev = qc->dev;
        struct qdi_data *qdi = ap->host->private_data;
 
        if (qdi->clock[adev->devno] != qdi->last) {
                if (adev->pio_mode) {
                        qdi->last = qdi->clock[adev->devno];
                        outb(qdi->clock[adev->devno], qdi->timing);
                }
        }
        return ata_qc_issue_prot(qc);
}
 
static void qdi_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
{
        struct ata_port *ap = adev->link->ap;
        int slop = buflen & 3;
 
        if (ata_id_has_dword_io(adev->id)) {
                if (write_data)
                        iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
                else
                        ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
 
                if (unlikely(slop)) {
                        __le32 pad = 0;
                        if (write_data) {
                                memcpy(&pad, buf + buflen - slop, slop);
                                iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
                        } else {
                                pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
                                memcpy(buf + buflen - slop, &pad, slop);
                        }
                }
        } else
                ata_data_xfer(adev, buf, buflen, write_data);
}
 
static struct scsi_host_template qdi_sht = {
        .module                 = THIS_MODULE,
        .name                   = DRV_NAME,
        .ioctl                  = ata_scsi_ioctl,
        .queuecommand           = ata_scsi_queuecmd,
        .can_queue              = ATA_DEF_QUEUE,
        .this_id                = ATA_SHT_THIS_ID,
        .sg_tablesize           = LIBATA_MAX_PRD,
        .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
        .emulated               = ATA_SHT_EMULATED,
        .use_clustering         = ATA_SHT_USE_CLUSTERING,
        .proc_name              = DRV_NAME,
        .dma_boundary           = ATA_DMA_BOUNDARY,
        .slave_configure        = ata_scsi_slave_config,
        .slave_destroy          = ata_scsi_slave_destroy,
        .bios_param             = ata_std_bios_param,
};
 
static struct ata_port_operations qdi6500_port_ops = {
        .set_piomode    = qdi6500_set_piomode,
 
        .tf_load        = ata_tf_load,
        .tf_read        = ata_tf_read,
        .check_status   = ata_check_status,
        .exec_command   = ata_exec_command,
        .dev_select     = ata_std_dev_select,
 
        .freeze         = ata_bmdma_freeze,
        .thaw           = ata_bmdma_thaw,
        .error_handler  = ata_bmdma_error_handler,
        .post_internal_cmd = ata_bmdma_post_internal_cmd,
        .cable_detect   = ata_cable_40wire,
 
        .qc_prep        = ata_qc_prep,
        .qc_issue       = qdi_qc_issue_prot,
 
        .data_xfer      = qdi_data_xfer,
 
        .irq_clear      = ata_bmdma_irq_clear,
        .irq_on         = ata_irq_on,
 
        .port_start     = ata_sff_port_start,
};
 
static struct ata_port_operations qdi6580_port_ops = {
        .set_piomode    = qdi6580_set_piomode,
 
        .tf_load        = ata_tf_load,
        .tf_read        = ata_tf_read,
        .check_status   = ata_check_status,
        .exec_command   = ata_exec_command,
        .dev_select     = ata_std_dev_select,
 
        .freeze         = ata_bmdma_freeze,
        .thaw           = ata_bmdma_thaw,
        .error_handler  = ata_bmdma_error_handler,
        .post_internal_cmd = ata_bmdma_post_internal_cmd,
        .cable_detect   = ata_cable_40wire,
 
        .qc_prep        = ata_qc_prep,
        .qc_issue       = qdi_qc_issue_prot,
 
        .data_xfer      = qdi_data_xfer,
 
        .irq_clear      = ata_bmdma_irq_clear,
        .irq_on         = ata_irq_on,
 
        .port_start     = ata_sff_port_start,
};
 
/**
 *      qdi_init_one            -       attach a qdi interface
 *      @type: Type to display
 *      @io: I/O port start
 *      @irq: interrupt line
 *      @fast: True if on a > 33Mhz VLB
 *
 *      Register an ISA bus IDE interface. Such interfaces are PIO and we
 *      assume do not support IRQ sharing.
 */
 
static __init int qdi_init_one(unsigned long port, int type, unsigned long io, int irq, int fast)
{
        unsigned long ctl = io + 0x206;
        struct platform_device *pdev;
        struct ata_host *host;
        struct ata_port *ap;
        void __iomem *io_addr, *ctl_addr;
        int ret;
 
        /*
         *      Fill in a probe structure first of all
         */
 
        pdev = platform_device_register_simple(DRV_NAME, nr_qdi_host, NULL, 0);
        if (IS_ERR(pdev))
                return PTR_ERR(pdev);
 
        ret = -ENOMEM;
        io_addr = devm_ioport_map(&pdev->dev, io, 8);
        ctl_addr = devm_ioport_map(&pdev->dev, ctl, 1);
        if (!io_addr || !ctl_addr)
                goto fail;
 
        ret = -ENOMEM;
        host = ata_host_alloc(&pdev->dev, 1);
        if (!host)
                goto fail;
        ap = host->ports[0];
 
        if (type == 6580) {
                ap->ops = &qdi6580_port_ops;
                ap->pio_mask = 0x1F;
                ap->flags |= ATA_FLAG_SLAVE_POSS;
        } else {
                ap->ops = &qdi6500_port_ops;
                ap->pio_mask = 0x07;    /* Actually PIO3 !IORDY is possible */
                ap->flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY;
        }
 
        ap->ioaddr.cmd_addr = io_addr;
        ap->ioaddr.altstatus_addr = ctl_addr;
        ap->ioaddr.ctl_addr = ctl_addr;
        ata_std_ports(&ap->ioaddr);
 
        ata_port_desc(ap, "cmd %lx ctl %lx", io, ctl);
 
        /*
         *      Hook in a private data structure per channel
         */
        ap->private_data = &qdi_data[nr_qdi_host];
 
        qdi_data[nr_qdi_host].timing = port;
        qdi_data[nr_qdi_host].fast = fast;
        qdi_data[nr_qdi_host].platform_dev = pdev;
 
        printk(KERN_INFO DRV_NAME": qd%d at 0x%lx.\n", type, io);
 
        /* activate */
        ret = ata_host_activate(host, irq, ata_interrupt, 0, &qdi_sht);
        if (ret)
                goto fail;
 
        qdi_host[nr_qdi_host++] = dev_get_drvdata(&pdev->dev);
        return 0;
 
 fail:
        platform_device_unregister(pdev);
        return ret;
}
 
/**
 *      qdi_init                -       attach qdi interfaces
 *
 *      Attach qdi IDE interfaces by scanning the ports it may occupy.
 */
 
static __init int qdi_init(void)
{
        unsigned long flags;
        static const unsigned long qd_port[2] = { 0x30, 0xB0 };
        static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
        static const int ide_irq[2] = { 14, 15 };
 
        int ct = 0;
        int i;
 
        if (probe_qdi == 0)
                return -ENODEV;
 
        /*
         *      Check each possible QD65xx base address
         */
 
        for (i = 0; i < 2; i++) {
                unsigned long port = qd_port[i];
                u8 r, res;
 
 
                if (request_region(port, 2, "pata_qdi")) {
                        /* Check for a card */
                        local_irq_save(flags);
                        r = inb_p(port);
                        outb_p(0x19, port);
                        res = inb_p(port);
                        outb_p(r, port);
                        local_irq_restore(flags);
 
                        /* Fail */
                        if (res == 0x19)
                        {
                                release_region(port, 2);
                                continue;
                        }
 
                        /* Passes the presence test */
                        r = inb_p(port + 1);    /* Check port agrees with port set */
                        if ((r & 2) >> 1 != i) {
                                release_region(port, 2);
                                continue;
                        }
 
                        /* Check card type */
                        if ((r & 0xF0) == 0xC0) {
                                /* QD6500: single channel */
                                if (r & 8) {
                                        /* Disabled ? */
                                        release_region(port, 2);
                                        continue;
                                }
                                if (qdi_init_one(port, 6500, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0)
                                        ct++;
                        }
                        if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) {
                                /* QD6580: dual channel */
                                if (!request_region(port + 2 , 2, "pata_qdi"))
                                {
                                        release_region(port, 2);
                                        continue;
                                }
                                res = inb(port + 3);
                                if (res & 1) {
                                        /* Single channel mode */
                                        if (qdi_init_one(port, 6580, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0)
                                                ct++;
                                } else {
                                        /* Dual channel mode */
                                        if (qdi_init_one(port, 6580, 0x1F0, 14, r & 0x04) == 0)
                                                ct++;
                                        if (qdi_init_one(port + 2, 6580, 0x170, 15, r & 0x04) == 0)
                                                ct++;
                                }
                        }
                }
        }
        if (ct != 0)
                return 0;
        return -ENODEV;
}
 
static __exit void qdi_exit(void)
{
        int i;
 
        for (i = 0; i < nr_qdi_host; i++) {
                ata_host_detach(qdi_host[i]);
                /* Free the control resource. The 6580 dual channel has the resources
                 * claimed as a pair of 2 byte resources so we need no special cases...
                 */
                release_region(qdi_data[i].timing, 2);
                platform_device_unregister(qdi_data[i].platform_dev);
        }
}
 
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for qdi ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
 
module_init(qdi_init);
module_exit(qdi_exit);
 
module_param(probe_qdi, int, 0);
 

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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [ata/] [pata_qdi.c] - Blame information for rev 79

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* pata_qdi.c - QDI VLB ATA controllers`
3			`* (C) 2006 Red Hat <alan@redhat.com>`
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"`
29			`#define DRV_VERSION "0.3.1"`
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;`
39
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);`
61
62			`if (qdi->fast) {`
63			`active = 8 - FIT(t.active, 1, 8);`
64			`recovery = 18 - FIT(t.recover, 3, 18);`
65			`} else {`
66			`active = 9 - FIT(t.active, 2, 9);`
67			`recovery = 15 - FIT(t.recover, 0, 15);`
68			`}`
69			`timing = (recovery << 4) \| active \| 0x08;`
70
71			`qdi->clock[adev->devno] = timing;`
72
73			`outb(timing, qdi->timing);`
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);`
85
86			`if (qdi->fast) {`
87			`active = 8 - FIT(t.active, 1, 8);`
88			`recovery = 18 - FIT(t.recover, 3, 18);`
89			`} else {`
90			`active = 9 - FIT(t.active, 2, 9);`
91			`recovery = 15 - FIT(t.recover, 0, 15);`
92			`}`
93			`timing = (recovery << 4) \| active \| 0x08;`
94
95			`qdi->clock[adev->devno] = timing;`
96
97			`outb(timing, qdi->timing);`
98
99			`/* Clear the FIFO */`
100			`if (adev->class != ATA_DEV_ATA)`
101			`outb(0x5F, (qdi->timing & 0xFFF0) + 3);`
102			`}`
103
104			`/**`
105			`* qdi_qc_issue_prot - command issue`
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
112			`static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc)`
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			`}`
124			`return ata_qc_issue_prot(qc);`
125			`}`
126
127			`static void qdi_data_xfer(struct ata_device adev, unsigned char buf, unsigned int buflen, int write_data)`
128			`{`
129			`struct ata_port *ap = adev->link->ap;`
130			`int slop = buflen & 3;`
131
132			`if (ata_id_has_dword_io(adev->id)) {`
133			`if (write_data)`
134			`iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);`
135			`else`
136			`ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);`
137
138			`if (unlikely(slop)) {`
139			`__le32 pad = 0;`
140			`if (write_data) {`
141			`memcpy(&pad, buf + buflen - slop, slop);`
142			`iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);`
143			`} else {`
144			`pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));`
145			`memcpy(buf + buflen - slop, &pad, slop);`
146			`}`
147			`}`
148			`} else`
149			`ata_data_xfer(adev, buf, buflen, write_data);`
150			`}`
151
152			`static struct scsi_host_template qdi_sht = {`
153			`.module = THIS_MODULE,`
154			`.name = DRV_NAME,`
155			`.ioctl = ata_scsi_ioctl,`
156			`.queuecommand = ata_scsi_queuecmd,`
157			`.can_queue = ATA_DEF_QUEUE,`
158			`.this_id = ATA_SHT_THIS_ID,`
159			`.sg_tablesize = LIBATA_MAX_PRD,`
160			`.cmd_per_lun = ATA_SHT_CMD_PER_LUN,`
161			`.emulated = ATA_SHT_EMULATED,`
162			`.use_clustering = ATA_SHT_USE_CLUSTERING,`
163			`.proc_name = DRV_NAME,`
164			`.dma_boundary = ATA_DMA_BOUNDARY,`
165			`.slave_configure = ata_scsi_slave_config,`
166			`.slave_destroy = ata_scsi_slave_destroy,`
167			`.bios_param = ata_std_bios_param,`
168			`};`
169
170			`static struct ata_port_operations qdi6500_port_ops = {`
171			`.set_piomode = qdi6500_set_piomode,`
172
173			`.tf_load = ata_tf_load,`
174			`.tf_read = ata_tf_read,`
175			`.check_status = ata_check_status,`
176			`.exec_command = ata_exec_command,`
177			`.dev_select = ata_std_dev_select,`
178
179			`.freeze = ata_bmdma_freeze,`
180			`.thaw = ata_bmdma_thaw,`
181			`.error_handler = ata_bmdma_error_handler,`
182			`.post_internal_cmd = ata_bmdma_post_internal_cmd,`
183			`.cable_detect = ata_cable_40wire,`
184
185			`.qc_prep = ata_qc_prep,`
186			`.qc_issue = qdi_qc_issue_prot,`
187
188			`.data_xfer = qdi_data_xfer,`
189
190			`.irq_clear = ata_bmdma_irq_clear,`
191			`.irq_on = ata_irq_on,`
192
193			`.port_start = ata_sff_port_start,`
194			`};`
195
196			`static struct ata_port_operations qdi6580_port_ops = {`
197			`.set_piomode = qdi6580_set_piomode,`
198
199			`.tf_load = ata_tf_load,`
200			`.tf_read = ata_tf_read,`
201			`.check_status = ata_check_status,`
202			`.exec_command = ata_exec_command,`
203			`.dev_select = ata_std_dev_select,`
204
205			`.freeze = ata_bmdma_freeze,`
206			`.thaw = ata_bmdma_thaw,`
207			`.error_handler = ata_bmdma_error_handler,`
208			`.post_internal_cmd = ata_bmdma_post_internal_cmd,`
209			`.cable_detect = ata_cable_40wire,`
210
211			`.qc_prep = ata_qc_prep,`
212			`.qc_issue = qdi_qc_issue_prot,`
213
214			`.data_xfer = qdi_data_xfer,`
215
216			`.irq_clear = ata_bmdma_irq_clear,`
217			`.irq_on = ata_irq_on,`
218
219			`.port_start = ata_sff_port_start,`
220			`};`
221
222			`/**`
223			`* qdi_init_one - attach a qdi interface`
224			`* @type: Type to display`
225			`* @io: I/O port start`
226			`* @irq: interrupt line`
227			`* @fast: True if on a > 33Mhz VLB`
228			`*`
229			`* Register an ISA bus IDE interface. Such interfaces are PIO and we`
230			`* assume do not support IRQ sharing.`
231			`*/`
232
233			`static __init int qdi_init_one(unsigned long port, int type, unsigned long io, int irq, int fast)`
234			`{`
235			`unsigned long ctl = io + 0x206;`
236			`struct platform_device *pdev;`
237			`struct ata_host *host;`
238			`struct ata_port *ap;`
239			`void __iomem io_addr, ctl_addr;`
240			`int ret;`
241
242			`/*`
243			`* Fill in a probe structure first of all`
244			`*/`
245
246			`pdev = platform_device_register_simple(DRV_NAME, nr_qdi_host, NULL, 0);`
247			`if (IS_ERR(pdev))`
248			`return PTR_ERR(pdev);`
249
250			`ret = -ENOMEM;`
251			`io_addr = devm_ioport_map(&pdev->dev, io, 8);`
252			`ctl_addr = devm_ioport_map(&pdev->dev, ctl, 1);`
253			`if (!io_addr \|\| !ctl_addr)`
254			`goto fail;`
255
256			`ret = -ENOMEM;`
257			`host = ata_host_alloc(&pdev->dev, 1);`
258			`if (!host)`
259			`goto fail;`
260			`ap = host->ports[0];`
261
262			`if (type == 6580) {`
263			`ap->ops = &qdi6580_port_ops;`
264			`ap->pio_mask = 0x1F;`
265			`ap->flags \|= ATA_FLAG_SLAVE_POSS;`
266			`} else {`
267			`ap->ops = &qdi6500_port_ops;`
268			`ap->pio_mask = 0x07; /* Actually PIO3 !IORDY is possible */`
269			`ap->flags = ATA_FLAG_SLAVE_POSS \| ATA_FLAG_NO_IORDY;`
270			`}`
271
272			`ap->ioaddr.cmd_addr = io_addr;`
273			`ap->ioaddr.altstatus_addr = ctl_addr;`
274			`ap->ioaddr.ctl_addr = ctl_addr;`
275			`ata_std_ports(&ap->ioaddr);`
276
277			`ata_port_desc(ap, "cmd %lx ctl %lx", io, ctl);`
278
279			`/*`
280			`* Hook in a private data structure per channel`
281			`*/`
282			`ap->private_data = &qdi_data[nr_qdi_host];`
283
284			`qdi_data[nr_qdi_host].timing = port;`
285			`qdi_data[nr_qdi_host].fast = fast;`
286			`qdi_data[nr_qdi_host].platform_dev = pdev;`
287
288			`printk(KERN_INFO DRV_NAME": qd%d at 0x%lx.\n", type, io);`
289
290			`/* activate */`
291			`ret = ata_host_activate(host, irq, ata_interrupt, 0, &qdi_sht);`
292			`if (ret)`
293			`goto fail;`
294
295			`qdi_host[nr_qdi_host++] = dev_get_drvdata(&pdev->dev);`
296			`return 0;`
297
298			`fail:`
299			`platform_device_unregister(pdev);`
300			`return ret;`
301			`}`
302
303			`/**`
304			`* qdi_init - attach qdi interfaces`
305			`*`
306			`* Attach qdi IDE interfaces by scanning the ports it may occupy.`
307			`*/`
308
309			`static __init int qdi_init(void)`
310			`{`
311			`unsigned long flags;`
312			`static const unsigned long qd_port[2] = { 0x30, 0xB0 };`
313			`static const unsigned long ide_port[2] = { 0x170, 0x1F0 };`
314			`static const int ide_irq[2] = { 14, 15 };`
315
316			`int ct = 0;`
317			`int i;`
318
319			`if (probe_qdi == 0)`
320			`return -ENODEV;`
321
322			`/*`
323			`* Check each possible QD65xx base address`
324			`*/`
325
326			`for (i = 0; i < 2; i++) {`
327			`unsigned long port = qd_port[i];`
328			`u8 r, res;`
329
330
331			`if (request_region(port, 2, "pata_qdi")) {`
332			`/* Check for a card */`
333			`local_irq_save(flags);`
334			`r = inb_p(port);`
335			`outb_p(0x19, port);`
336			`res = inb_p(port);`
337			`outb_p(r, port);`
338			`local_irq_restore(flags);`
339
340			`/* Fail */`
341			`if (res == 0x19)`
342			`{`
343			`release_region(port, 2);`
344			`continue;`
345			`}`
346
347			`/* Passes the presence test */`
348			`r = inb_p(port + 1); /* Check port agrees with port set */`
349			`if ((r & 2) >> 1 != i) {`
350			`release_region(port, 2);`
351			`continue;`
352			`}`
353
354			`/* Check card type */`
355			`if ((r & 0xF0) == 0xC0) {`
356			`/* QD6500: single channel */`
357			`if (r & 8) {`
358			`/* Disabled ? */`
359			`release_region(port, 2);`
360			`continue;`
361			`}`
362			`if (qdi_init_one(port, 6500, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0)`
363			`ct++;`
364			`}`
365			`if (((r & 0xF0) == 0xA0) \|\| (r & 0xF0) == 0x50) {`
366			`/* QD6580: dual channel */`
367			`if (!request_region(port + 2 , 2, "pata_qdi"))`
368			`{`
369			`release_region(port, 2);`
370			`continue;`
371			`}`
372			`res = inb(port + 3);`
373			`if (res & 1) {`
374			`/* Single channel mode */`
375			`if (qdi_init_one(port, 6580, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0)`
376			`ct++;`
377			`} else {`
378			`/* Dual channel mode */`
379			`if (qdi_init_one(port, 6580, 0x1F0, 14, r & 0x04) == 0)`
380			`ct++;`
381			`if (qdi_init_one(port + 2, 6580, 0x170, 15, r & 0x04) == 0)`
382			`ct++;`
383			`}`
384			`}`
385			`}`
386			`}`
387			`if (ct != 0)`
388			`return 0;`
389			`return -ENODEV;`
390			`}`
391
392			`static __exit void qdi_exit(void)`
393			`{`
394			`int i;`
395
396			`for (i = 0; i < nr_qdi_host; i++) {`
397			`ata_host_detach(qdi_host[i]);`
398			`/* Free the control resource. The 6580 dual channel has the resources`
399			`* claimed as a pair of 2 byte resources so we need no special cases...`
400			`*/`
401			`release_region(qdi_data[i].timing, 2);`
402			`platform_device_unregister(qdi_data[i].platform_dev);`
403			`}`
404			`}`
405
406			`MODULE_AUTHOR("Alan Cox");`
407			`MODULE_DESCRIPTION("low-level driver for qdi ATA");`
408			`MODULE_LICENSE("GPL");`
409			`MODULE_VERSION(DRV_VERSION);`
410
411			`module_init(qdi_init);`
412			`module_exit(qdi_exit);`
413
414			`module_param(probe_qdi, int, 0);`
415