[people/ms/u-boot.git] / drivers / mmc / sandbox_mmc.c

/*
 * Copyright (c) 2015 Google, Inc
 * Written by Simon Glass <sjg@chromium.org>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <fdtdec.h>
#include <mmc.h>
#include <asm/test.h>

DECLARE_GLOBAL_DATA_PTR;

struct sandbox_mmc_plat {
	struct mmc_config cfg;
	struct mmc mmc;
};

/**
 * sandbox_mmc_send_cmd() - Emulate SD commands
 *
 * This emulate an SD card version 2. Single-block reads result in zero data.
 * Multiple-block reads return a test string.
 */
static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
				struct mmc_data *data)
{
	switch (cmd->cmdidx) {
	case MMC_CMD_ALL_SEND_CID:
		break;
	case SD_CMD_SEND_RELATIVE_ADDR:
		cmd->response[0] = 0 << 16; /* mmc->rca */
	case MMC_CMD_GO_IDLE_STATE:
		break;
	case SD_CMD_SEND_IF_COND:
		cmd->response[0] = 0xaa;
		break;
	case MMC_CMD_SEND_STATUS:
		cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
		break;
	case MMC_CMD_SELECT_CARD:
		break;
	case MMC_CMD_SEND_CSD:
		cmd->response[0] = 0;
		cmd->response[1] = 10 << 16;	/* 1 << block_len */
		break;
	case SD_CMD_SWITCH_FUNC: {
		if (!data)
			break;
		u32 *resp = (u32 *)data->dest;
		resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY);
		if ((cmd->cmdarg & 0xF) == UHS_SDR12_BUS_SPEED)
			resp[4] = (cmd->cmdarg & 0xF) << 24;
		break;
	}
	case MMC_CMD_READ_SINGLE_BLOCK:
		memset(data->dest, '\0', data->blocksize);
		break;
	case MMC_CMD_READ_MULTIPLE_BLOCK:
		strcpy(data->dest, "this is a test");
		break;
	case MMC_CMD_STOP_TRANSMISSION:
		break;
	case SD_CMD_APP_SEND_OP_COND:
		cmd->response[0] = OCR_BUSY | OCR_HCS;
		cmd->response[1] = 0;
		cmd->response[2] = 0;
		break;
	case MMC_CMD_APP_CMD:
		break;
	case MMC_CMD_SET_BLOCKLEN:
		debug("block len %d\n", cmd->cmdarg);
		break;
	case SD_CMD_APP_SEND_SCR: {
		u32 *scr = (u32 *)data->dest;

		scr[0] = cpu_to_be32(2 << 24 | 1 << 15);  /* SD version 3 */
		break;
	}
	default:
		debug("%s: Unknown command %d\n", __func__, cmd->cmdidx);
		break;
	}

	return 0;
}

static int sandbox_mmc_set_ios(struct udevice *dev)
{
	return 0;
}

static int sandbox_mmc_get_cd(struct udevice *dev)
{
	return 1;
}

static const struct dm_mmc_ops sandbox_mmc_ops = {
	.send_cmd = sandbox_mmc_send_cmd,
	.set_ios = sandbox_mmc_set_ios,
	.get_cd = sandbox_mmc_get_cd,
};

int sandbox_mmc_probe(struct udevice *dev)
{
	struct sandbox_mmc_plat *plat = dev_get_platdata(dev);

	return mmc_init(&plat->mmc);
}

int sandbox_mmc_bind(struct udevice *dev)
{
	struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
	struct mmc_config *cfg = &plat->cfg;

	cfg->name = dev->name;
	cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_8BIT;
	cfg->voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
	cfg->f_min = 1000000;
	cfg->f_max = 52000000;
	cfg->b_max = U32_MAX;

	return mmc_bind(dev, &plat->mmc, cfg);
}

int sandbox_mmc_unbind(struct udevice *dev)
{
	mmc_unbind(dev);

	return 0;
}

static const struct udevice_id sandbox_mmc_ids[] = {
	{ .compatible = "sandbox,mmc" },
	{ }
};

U_BOOT_DRIVER(mmc_sandbox) = {
	.name		= "mmc_sandbox",
	.id		= UCLASS_MMC,
	.of_match	= sandbox_mmc_ids,
	.ops		= &sandbox_mmc_ops,
	.bind		= sandbox_mmc_bind,
	.unbind		= sandbox_mmc_unbind,
	.probe		= sandbox_mmc_probe,
	.platdata_auto_alloc_size = sizeof(struct sandbox_mmc_plat),
};
Commit	Line	Data
8e6cc461 SG	1	/*
	2	* Copyright (c) 2015 Google, Inc
	3	* Written by Simon Glass <sjg@chromium.org>
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <dm.h>
	10	#include <errno.h>
f376a3cb	11	#include <fdtdec.h>
8e6cc461 SG	12	#include <mmc.h>
	13	#include <asm/test.h>
	14
	15	DECLARE_GLOBAL_DATA_PTR;
	16
f376a3cb SG	17	struct sandbox_mmc_plat {
	18	struct mmc_config cfg;
	19	struct mmc mmc;
	20	};
	21
	22	/**
	23	* sandbox_mmc_send_cmd() - Emulate SD commands
	24	*
	25	* This emulate an SD card version 2. Single-block reads result in zero data.
	26	* Multiple-block reads return a test string.
	27	*/
9a46bd3f	28	static int sandbox_mmc_send_cmd(struct udevice dev, struct mmc_cmd cmd,
f376a3cb SG	29	struct mmc_data *data)
	30	{
	31	switch (cmd->cmdidx) {
	32	case MMC_CMD_ALL_SEND_CID:
	33	break;
	34	case SD_CMD_SEND_RELATIVE_ADDR:
	35	cmd->response[0] = 0 << 16; /* mmc->rca */
	36	case MMC_CMD_GO_IDLE_STATE:
	37	break;
	38	case SD_CMD_SEND_IF_COND:
	39	cmd->response[0] = 0xaa;
	40	break;
	41	case MMC_CMD_SEND_STATUS:
	42	cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
	43	break;
	44	case MMC_CMD_SELECT_CARD:
	45	break;
	46	case MMC_CMD_SEND_CSD:
	47	cmd->response[0] = 0;
	48	cmd->response[1] = 10 << 16; /* 1 << block_len */
	49	break;
	50	case SD_CMD_SWITCH_FUNC: {
49f89252 JJH	51	if (!data)
49f89252 JJH	52	break;
f376a3cb	53	u32 resp = (u32 )data->dest;
f376a3cb	54	resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY);
49f89252 JJH	55	if ((cmd->cmdarg & 0xF) == UHS_SDR12_BUS_SPEED)
49f89252 JJH	56	resp[4] = (cmd->cmdarg & 0xF) << 24;
f376a3cb SG	57	break;
	58	}
	59	case MMC_CMD_READ_SINGLE_BLOCK:
	60	memset(data->dest, '\0', data->blocksize);
	61	break;
	62	case MMC_CMD_READ_MULTIPLE_BLOCK:
	63	strcpy(data->dest, "this is a test");
	64	break;
	65	case MMC_CMD_STOP_TRANSMISSION:
	66	break;
	67	case SD_CMD_APP_SEND_OP_COND:
	68	cmd->response[0] = OCR_BUSY \| OCR_HCS;
	69	cmd->response[1] = 0;
	70	cmd->response[2] = 0;
	71	break;
	72	case MMC_CMD_APP_CMD:
	73	break;
	74	case MMC_CMD_SET_BLOCKLEN:
	75	debug("block len %d\n", cmd->cmdarg);
	76	break;
	77	case SD_CMD_APP_SEND_SCR: {
	78	u32 scr = (u32 )data->dest;
	79
	80	scr[0] = cpu_to_be32(2 << 24 \| 1 << 15); /* SD version 3 */
	81	break;
	82	}
	83	default:
	84	debug("%s: Unknown command %d\n", __func__, cmd->cmdidx);
	85	break;
	86	}
	87
	88	return 0;
	89	}
	90
9a46bd3f	91	static int sandbox_mmc_set_ios(struct udevice *dev)
f376a3cb SG	92	{
	93	return 0;
	94	}
	95
9a46bd3f	96	static int sandbox_mmc_get_cd(struct udevice *dev)
f376a3cb SG	97	{
	98	return 1;
	99	}
	100
9a46bd3f	101	static const struct dm_mmc_ops sandbox_mmc_ops = {
f376a3cb SG	102	.send_cmd = sandbox_mmc_send_cmd,
f376a3cb SG	103	.set_ios = sandbox_mmc_set_ios,
9a46bd3f	104	.get_cd = sandbox_mmc_get_cd,
f376a3cb SG	105	};
	106
	107	int sandbox_mmc_probe(struct udevice *dev)
	108	{
	109	struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
	110
	111	return mmc_init(&plat->mmc);
	112	}
	113
	114	int sandbox_mmc_bind(struct udevice *dev)
	115	{
	116	struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
	117	struct mmc_config *cfg = &plat->cfg;
f376a3cb SG	118
f376a3cb SG	119	cfg->name = dev->name;
f376a3cb SG	120	cfg->host_caps = MMC_MODE_HS_52MHz \| MMC_MODE_HS \| MMC_MODE_8BIT;
	121	cfg->voltages = MMC_VDD_165_195 \| MMC_VDD_32_33 \| MMC_VDD_33_34;
	122	cfg->f_min = 1000000;
	123	cfg->f_max = 52000000;
	124	cfg->b_max = U32_MAX;
	125
24f5aec3	126	return mmc_bind(dev, &plat->mmc, cfg);
f376a3cb SG	127	}
	128
	129	int sandbox_mmc_unbind(struct udevice *dev)
	130	{
	131	mmc_unbind(dev);
	132
	133	return 0;
	134	}
	135
8e6cc461 SG	136	static const struct udevice_id sandbox_mmc_ids[] = {
	137	{ .compatible = "sandbox,mmc" },
	138	{ }
	139	};
	140
f376a3cb	141	U_BOOT_DRIVER(mmc_sandbox) = {
8e6cc461 SG	142	.name = "mmc_sandbox",
	143	.id = UCLASS_MMC,
	144	.of_match = sandbox_mmc_ids,
9a46bd3f	145	.ops = &sandbox_mmc_ops,
f376a3cb SG	146	.bind = sandbox_mmc_bind,
	147	.unbind = sandbox_mmc_unbind,
	148	.probe = sandbox_mmc_probe,
	149	.platdata_auto_alloc_size = sizeof(struct sandbox_mmc_plat),
8e6cc461	150	};