diff options
Diffstat (limited to 'hw/sd')
| -rw-r--r-- | hw/sd/allwinner-sdhost.c | 67 |
1 files changed, 46 insertions, 21 deletions
diff --git a/hw/sd/allwinner-sdhost.c b/hw/sd/allwinner-sdhost.c index 455d6eabf6..51e5e90830 100644 --- a/hw/sd/allwinner-sdhost.c +++ b/hw/sd/allwinner-sdhost.c @@ -65,7 +65,7 @@ enum { REG_SD_DLBA = 0x84, /* Descriptor List Base Address */ REG_SD_IDST = 0x88, /* Internal DMA Controller Status */ REG_SD_IDIE = 0x8C, /* Internal DMA Controller IRQ Enable */ - REG_SD_THLDC = 0x100, /* Card Threshold Control */ + REG_SD_THLDC = 0x100, /* Card Threshold Control / FIFO (sun4i only)*/ REG_SD_DSBD = 0x10C, /* eMMC DDR Start Bit Detection Control */ REG_SD_RES_CRC = 0x110, /* Response CRC from card/eMMC */ REG_SD_DATA7_CRC = 0x114, /* CRC Data 7 from card/eMMC */ @@ -415,10 +415,29 @@ static void allwinner_sdhost_dma(AwSdHostState *s) } } +static uint32_t allwinner_sdhost_fifo_read(AwSdHostState *s) +{ + uint32_t res = 0; + + if (sdbus_data_ready(&s->sdbus)) { + sdbus_read_data(&s->sdbus, &res, sizeof(uint32_t)); + le32_to_cpus(&res); + allwinner_sdhost_update_transfer_cnt(s, sizeof(uint32_t)); + allwinner_sdhost_auto_stop(s); + allwinner_sdhost_update_irq(s); + } else { + qemu_log_mask(LOG_GUEST_ERROR, "%s: no data ready on SD bus\n", + __func__); + } + + return res; +} + static uint64_t allwinner_sdhost_read(void *opaque, hwaddr offset, unsigned size) { AwSdHostState *s = AW_SDHOST(opaque); + AwSdHostClass *sc = AW_SDHOST_GET_CLASS(s); uint32_t res = 0; switch (offset) { @@ -508,8 +527,12 @@ static uint64_t allwinner_sdhost_read(void *opaque, hwaddr offset, case REG_SD_IDIE: /* Internal DMA Controller Interrupt Enable */ res = s->dmac_irq; break; - case REG_SD_THLDC: /* Card Threshold Control */ - res = s->card_threshold; + case REG_SD_THLDC: /* Card Threshold Control or FIFO register (sun4i) */ + if (sc->is_sun4i) { + res = allwinner_sdhost_fifo_read(s); + } else { + res = s->card_threshold; + } break; case REG_SD_DSBD: /* eMMC DDR Start Bit Detection Control */ res = s->startbit_detect; @@ -531,16 +554,7 @@ static uint64_t allwinner_sdhost_read(void *opaque, hwaddr offset, res = s->status_crc; break; case REG_SD_FIFO: /* Read/Write FIFO */ - if (sdbus_data_ready(&s->sdbus)) { - sdbus_read_data(&s->sdbus, &res, sizeof(uint32_t)); - le32_to_cpus(&res); - allwinner_sdhost_update_transfer_cnt(s, sizeof(uint32_t)); - allwinner_sdhost_auto_stop(s); - allwinner_sdhost_update_irq(s); - } else { - qemu_log_mask(LOG_GUEST_ERROR, "%s: no data ready on SD bus\n", - __func__); - } + res = allwinner_sdhost_fifo_read(s); break; default: qemu_log_mask(LOG_GUEST_ERROR, "%s: out-of-bounds offset %" @@ -553,11 +567,20 @@ static uint64_t allwinner_sdhost_read(void *opaque, hwaddr offset, return res; } +static void allwinner_sdhost_fifo_write(AwSdHostState *s, uint64_t value) +{ + uint32_t u32 = cpu_to_le32(value); + sdbus_write_data(&s->sdbus, &u32, sizeof(u32)); + allwinner_sdhost_update_transfer_cnt(s, sizeof(u32)); + allwinner_sdhost_auto_stop(s); + allwinner_sdhost_update_irq(s); +} + static void allwinner_sdhost_write(void *opaque, hwaddr offset, uint64_t value, unsigned size) { AwSdHostState *s = AW_SDHOST(opaque); - uint32_t u32; + AwSdHostClass *sc = AW_SDHOST_GET_CLASS(s); trace_allwinner_sdhost_write(offset, value, size); @@ -657,18 +680,18 @@ static void allwinner_sdhost_write(void *opaque, hwaddr offset, s->dmac_irq = value; allwinner_sdhost_update_irq(s); break; - case REG_SD_THLDC: /* Card Threshold Control */ - s->card_threshold = value; + case REG_SD_THLDC: /* Card Threshold Control or FIFO (sun4i) */ + if (sc->is_sun4i) { + allwinner_sdhost_fifo_write(s, value); + } else { + s->card_threshold = value; + } break; case REG_SD_DSBD: /* eMMC DDR Start Bit Detection Control */ s->startbit_detect = value; break; case REG_SD_FIFO: /* Read/Write FIFO */ - u32 = cpu_to_le32(value); - sdbus_write_data(&s->sdbus, &u32, sizeof(u32)); - allwinner_sdhost_update_transfer_cnt(s, sizeof(u32)); - allwinner_sdhost_auto_stop(s); - allwinner_sdhost_update_irq(s); + allwinner_sdhost_fifo_write(s, value); break; case REG_SD_RES_CRC: /* Response CRC from card/eMMC */ case REG_SD_DATA7_CRC: /* CRC Data 7 from card/eMMC */ @@ -834,12 +857,14 @@ static void allwinner_sdhost_sun4i_class_init(ObjectClass *klass, void *data) { AwSdHostClass *sc = AW_SDHOST_CLASS(klass); sc->max_desc_size = 8 * KiB; + sc->is_sun4i = true; } static void allwinner_sdhost_sun5i_class_init(ObjectClass *klass, void *data) { AwSdHostClass *sc = AW_SDHOST_CLASS(klass); sc->max_desc_size = 64 * KiB; + sc->is_sun4i = false; } static const TypeInfo allwinner_sdhost_info = { |