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Release 4.14 arch/sh/drivers/superhyway/ops-sh4-202.c

/*
 * arch/sh/drivers/superhyway/ops-sh4-202.c
 *
 * SuperHyway bus support for SH4-202
 *
 * Copyright (C) 2005  Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU
 * General Public License.  See the file "COPYING" in the main
 * directory of this archive for more details.
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/superhyway.h>
#include <linux/string.h>
#include <asm/addrspace.h>
#include <asm/io.h>


#define PHYS_EMI_CBLOCK		P4SEGADDR(0x1ec00000)

#define PHYS_EMI_DBLOCK		P4SEGADDR(0x08000000)

#define PHYS_FEMI_CBLOCK	P4SEGADDR(0x1f800000)

#define PHYS_FEMI_DBLOCK	P4SEGADDR(0x00000000)


#define PHYS_EPBR_BLOCK		P4SEGADDR(0x1de00000)

#define PHYS_DMAC_BLOCK		P4SEGADDR(0x1fa00000)

#define PHYS_PBR_BLOCK		P4SEGADDR(0x1fc00000)


static struct resource emi_resources[] = {
	[0] = {
		.start	= PHYS_EMI_CBLOCK,
		.end	= PHYS_EMI_CBLOCK + 0x00300000 - 1,
		.flags	= IORESOURCE_MEM,
        },
	[1] = {
		.start	= PHYS_EMI_DBLOCK,
		.end	= PHYS_EMI_DBLOCK + 0x08000000 - 1,
		.flags	= IORESOURCE_MEM,
        },
};


static struct superhyway_device emi_device = {
	.name		= "emi",
	.num_resources	= ARRAY_SIZE(emi_resources),
	.resource	= emi_resources,
};


static struct resource femi_resources[] = {
	[0] = {
		.start	= PHYS_FEMI_CBLOCK,
		.end	= PHYS_FEMI_CBLOCK + 0x00100000 - 1,
		.flags	= IORESOURCE_MEM,
        },
	[1] = {
		.start	= PHYS_FEMI_DBLOCK,
		.end	= PHYS_FEMI_DBLOCK + 0x08000000 - 1,
		.flags	= IORESOURCE_MEM,
        },
};


static struct superhyway_device femi_device = {
	.name		= "femi",
	.num_resources	= ARRAY_SIZE(femi_resources),
	.resource	= femi_resources,
};


static struct resource epbr_resources[] = {
	[0] = {
		.start	= P4SEGADDR(0x1e7ffff8),
		.end	= P4SEGADDR(0x1e7ffff8 + (sizeof(u32) * 2) - 1),
		.flags	= IORESOURCE_MEM,
        },
	[1] = {
		.start	= PHYS_EPBR_BLOCK,
		.end	= PHYS_EPBR_BLOCK + 0x00a00000 - 1,
		.flags	= IORESOURCE_MEM,
        },
};


static struct superhyway_device epbr_device = {
	.name		= "epbr",
	.num_resources	= ARRAY_SIZE(epbr_resources),
	.resource	= epbr_resources,
};


static struct resource dmac_resource = {
	.start	= PHYS_DMAC_BLOCK,
	.end	= PHYS_DMAC_BLOCK + 0x00100000 - 1,
	.flags	= IORESOURCE_MEM,
};


static struct superhyway_device dmac_device = {
	.name		= "dmac",
	.num_resources	= 1,
	.resource	= &dmac_resource,
};


static struct resource pbr_resources[] = {
	[0] = {
		.start	= P4SEGADDR(0x1ffffff8),
		.end	= P4SEGADDR(0x1ffffff8 + (sizeof(u32) * 2) - 1),
		.flags	= IORESOURCE_MEM,
        },
	[1] = {
		.start	= PHYS_PBR_BLOCK,
		.end	= PHYS_PBR_BLOCK + 0x00400000 - (sizeof(u32) * 2) - 1,
		.flags	= IORESOURCE_MEM,
        },
};


static struct superhyway_device pbr_device = {
	.name		= "pbr",
	.num_resources	= ARRAY_SIZE(pbr_resources),
	.resource	= pbr_resources,
};


static struct superhyway_device *sh4202_devices[] __initdata = {
	&emi_device, &femi_device, &epbr_device, &dmac_device, &pbr_device,
};


static int sh4202_read_vcr(unsigned long base, struct superhyway_vcr_info *vcr) { u32 vcrh, vcrl; u64 tmp; /* * XXX: Even though the SH4-202 Evaluation Device documentation * indicates that VCRL is mapped first with VCRH at a + 0x04 * offset, the opposite seems to be true. * * Some modules (PBR and ePBR for instance) also appear to have * VCRL/VCRH flipped in the documentation, but on the SH4-202 * itself it appears that these are all consistently mapped with * VCRH preceding VCRL. * * Do not trust the documentation, for it is evil. */ vcrh = __raw_readl(base); vcrl = __raw_readl(base + sizeof(u32)); tmp = ((u64)vcrh << 32) | vcrl; memcpy(vcr, &tmp, sizeof(u64)); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt7198.61%266.67%
Simon Arlott11.39%133.33%
Total72100.00%3100.00%


static int sh4202_write_vcr(unsigned long base, struct superhyway_vcr_info vcr) { u64 tmp = *(u64 *)&vcr; __raw_writel((tmp >> 32) & 0xffffffff, base); __raw_writel(tmp & 0xffffffff, base + sizeof(u32)); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt55100.00%2100.00%
Total55100.00%2100.00%

static struct superhyway_ops sh4202_superhyway_ops = { .read_vcr = sh4202_read_vcr, .write_vcr = sh4202_write_vcr, }; struct superhyway_bus superhyway_channels[] = { { &sh4202_superhyway_ops, }, { 0, }, };
int __init superhyway_scan_bus(struct superhyway_bus *bus) { return superhyway_add_devices(bus, sh4202_devices, ARRAY_SIZE(sh4202_devices)); }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt24100.00%1100.00%
Total24100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt67199.85%266.67%
Simon Arlott10.15%133.33%
Total672100.00%3100.00%
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