Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
pata_pdc202xx_old: implement sff_irq_check() method
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
authored by Sergei Shtylyov and committed by Jeff Garzik 606254e3 c1ce90f2
+23
drivers/ata/pata_pdc202xx_old.c
+23
drivers/ata/pata_pdc202xx_old.c
···
44
ndelay(400);
45
}
46
47
/**
48
* pdc202xx_configure_piomode - set chip PIO timing
49
* @ap: ATA interface
···
303
.set_dmamode = pdc202xx_set_dmamode,
304
305
.sff_exec_command = pdc202xx_exec_command,
306
};
307
308
static struct ata_port_operations pdc2026x_port_ops = {
···
319
.port_start = pdc2026x_port_start,
320
321
.sff_exec_command = pdc202xx_exec_command,
322
};
323
324
static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
···
44
ndelay(400);
45
}
46
47
+
static bool pdc202xx_irq_check(struct ata_port *ap)
48
+
{
49
+
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
50
+
unsigned long master = pci_resource_start(pdev, 4);
51
+
u8 sc1d = inb(master + 0x1d);
52
+
53
+
if (ap->port_no) {
54
+
/*
55
+
* bit 7: error, bit 6: interrupting,
56
+
* bit 5: FIFO full, bit 4: FIFO empty
57
+
*/
58
+
return sc1d & 0x40;
59
+
} else {
60
+
/*
61
+
* bit 3: error, bit 2: interrupting,
62
+
* bit 1: FIFO full, bit 0: FIFO empty
63
+
*/
64
+
return sc1d & 0x04;
65
+
}
66
+
}
67
+
68
/**
69
* pdc202xx_configure_piomode - set chip PIO timing
70
* @ap: ATA interface
···
282
.set_dmamode = pdc202xx_set_dmamode,
283
284
.sff_exec_command = pdc202xx_exec_command,
285
+
.sff_irq_check = pdc202xx_irq_check,
286
};
287
288
static struct ata_port_operations pdc2026x_port_ops = {
···
297
.port_start = pdc2026x_port_start,
298
299
.sff_exec_command = pdc202xx_exec_command,
300
+
.sff_irq_check = pdc202xx_irq_check,
301
};
302
303
static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)