Revision 5493e33f hw/ssi-sd.c
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/* |
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* SSI to SD card adapter. |
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* |
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* Copyright (c) 2007 CodeSourcery. |
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* Copyright (c) 2007-2009 CodeSourcery.
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* Written by Paul Brook |
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* |
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* This code is licenced under the GPL.
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* This code is licenced under the GNU GPL v2.
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*/ |
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#include "hw.h"
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#include "ssi.h"
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#include "sd.h" |
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#include "sysemu.h" |
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//#define DEBUG_SSI_SD 1 |
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} ssi_sd_mode; |
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typedef struct {
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SSISlave ssidev; |
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ssi_sd_mode mode; |
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int cmd; |
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uint8_t cmdarg[4]; |
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#define SSI_SDR_ADDRESS_ERROR 0x2000 |
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#define SSI_SDR_PARAMETER_ERROR 0x4000 |
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int ssi_sd_xfer(void *opaque, int val)
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static uint32_t ssi_sd_transfer(SSISlave *dev, uint32_t val)
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{
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ssi_sd_state *s = (ssi_sd_state *)opaque;
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ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, dev);
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/* Special case: allow CMD12 (STOP TRANSMISSION) while reading data. */ |
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if (s->mode == SSI_SD_DATA_READ && val == 0x4d) {
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return 0; |
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} |
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void *ssi_sd_init(BlockDriverState *bs)
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static void ssi_sd_init(SSISlave *dev)
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{
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ssi_sd_state *s; |
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ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, dev); |
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BlockDriverState *bs; |
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s = (ssi_sd_state *)qemu_mallocz(sizeof(ssi_sd_state)); |
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s->mode = SSI_SD_CMD; |
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bs = qdev_init_bdrv(&dev->qdev, IF_SD); |
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s->sd = sd_init(bs, 1); |
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register_savevm("ssi_sd", -1, 1, ssi_sd_save, ssi_sd_load, s);
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return s; |
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} |
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static SSISlaveInfo ssi_sd_info = {
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.init = ssi_sd_init, |
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.transfer = ssi_sd_transfer |
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}; |
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static void ssi_sd_register_devices(void) |
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{
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ssi_register_slave("ssi-sd", sizeof(ssi_sd_state), &ssi_sd_info);
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} |
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device_init(ssi_sd_register_devices) |
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