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#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/ata_platform.h>
#include <asm/sibyte/board.h>
#include <asm/sibyte/sb1250_genbus.h>
#include <asm/sibyte/sb1250_regs.h>
#define DRV_NAME "pata-swarm"
#define SWARM_IDE_SHIFT 5
#define SWARM_IDE_BASE 0x1f0
#define SWARM_IDE_CTRL 0x3f6
static struct resource swarm_pata_resource[] = {
{
.name = "Swarm GenBus IDE",
.flags = IORESOURCE_MEM,
}, {
.name = "Swarm GenBus IDE",
.flags = IORESOURCE_MEM,
}, {
.name = "Swarm GenBus IDE",
.flags = IORESOURCE_IRQ,
.start = K_INT_GB_IDE,
.end = K_INT_GB_IDE,
},
};
static struct pata_platform_info pata_platform_data = {
.ioport_shift = SWARM_IDE_SHIFT,
};
static struct platform_device swarm_pata_device = {
.name = "pata_platform",
.id = -1,
.resource = swarm_pata_resource,
.num_resources = ARRAY_SIZE(swarm_pata_resource),
.dev = {
.platform_data = &pata_platform_data,
.coherent_dma_mask = ~0, /* grumble */
},
};
static int __init swarm_pata_init(void)
{
u8 __iomem *base;
phys_t offset, size;
struct resource *r;
if (!SIBYTE_HAVE_IDE)
return -ENODEV;
base = ioremap(A_IO_EXT_BASE, 0x800);
offset = __raw_readq(base + R_IO_EXT_REG(R_IO_EXT_START_ADDR, IDE_CS));
size = __raw_readq(base + R_IO_EXT_REG(R_IO_EXT_MULT_SIZE, IDE_CS));
iounmap(base);
offset = G_IO_START_ADDR(offset) << S_IO_ADDRBASE;
size = (G_IO_MULT_SIZE(size) + 1) << S_IO_REGSIZE;
if (offset < A_PHYS_GENBUS || offset >= A_PHYS_GENBUS_END) {
pr_info(DRV_NAME ": PATA interface at GenBus disabled\n");
return -EBUSY;
}
pr_info(DRV_NAME ": PATA interface at GenBus slot %i\n", IDE_CS);
r = swarm_pata_resource;
r[0].start = offset + (SWARM_IDE_BASE << SWARM_IDE_SHIFT);
r[0].end = offset + ((SWARM_IDE_BASE + 8) << SWARM_IDE_SHIFT) - 1;
r[1].start = offset + (SWARM_IDE_CTRL << SWARM_IDE_SHIFT);
r[1].end = offset + ((SWARM_IDE_CTRL + 1) << SWARM_IDE_SHIFT) - 1;
return platform_device_register(&swarm_pata_device);
}
device_initcall(swarm_pata_init);
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