diff options
Diffstat (limited to 'hw')
-rw-r--r-- | hw/omap_mmc.c | 2 | ||||
-rw-r--r-- | hw/pl061.c | 15 | ||||
-rw-r--r-- | hw/pl181.c | 2 | ||||
-rw-r--r-- | hw/primecell.h | 4 | ||||
-rw-r--r-- | hw/pxa2xx_mmci.c | 2 | ||||
-rw-r--r-- | hw/sd.c | 87 | ||||
-rw-r--r-- | hw/sd.h | 6 | ||||
-rw-r--r-- | hw/ssd0323.c | 3 | ||||
-rw-r--r-- | hw/ssi-sd.c | 202 | ||||
-rw-r--r-- | hw/stellaris.c | 60 |
10 files changed, 368 insertions, 15 deletions
diff --git a/hw/omap_mmc.c b/hw/omap_mmc.c index 0a7ae87126..6fbbb84912 100644 --- a/hw/omap_mmc.c +++ b/hw/omap_mmc.c @@ -525,7 +525,7 @@ struct omap_mmc_s *omap_mmc_init(target_phys_addr_t base, cpu_register_physical_memory(s->base, 0x800, iomemtype); /* Instantiate the storage */ - s->card = sd_init(bd); + s->card = sd_init(bd, 0); return s; } diff --git a/hw/pl061.c b/hw/pl061.c index d9a6f50f86..3ac0a4c100 100644 --- a/hw/pl061.c +++ b/hw/pl061.c @@ -48,6 +48,7 @@ typedef struct { uint8_t slr; uint8_t den; uint8_t cr; + uint8_t float_high; qemu_irq irq; qemu_irq out[8]; } pl061_state; @@ -56,18 +57,22 @@ static void pl061_update(pl061_state *s) { uint8_t changed; uint8_t mask; + uint8_t out; int i; - changed = s->old_data ^ s->data; + /* Outputs float high. */ + /* FIXME: This is board dependent. */ + out = (s->data & s->dir) | ~s->dir; + changed = s->old_data ^ out; if (!changed) return; - s->old_data = s->data; + s->old_data = out; for (i = 0; i < 8; i++) { mask = 1 << i; - if ((changed & mask & s->dir) && s->out) { - DPRINTF("Set output %d = %d\n", i, (s->data & mask) != 0); - qemu_set_irq(s->out[i], (s->data & mask) != 0); + if ((changed & mask) && s->out) { + DPRINTF("Set output %d = %d\n", i, (out & mask) != 0); + qemu_set_irq(s->out[i], (out & mask) != 0); } } diff --git a/hw/pl181.c b/hw/pl181.c index 5eb46d0f8b..75c3143e27 100644 --- a/hw/pl181.c +++ b/hw/pl181.c @@ -458,7 +458,7 @@ void pl181_init(uint32_t base, BlockDriverState *bd, pl181_writefn, s); cpu_register_physical_memory(base, 0x00001000, iomemtype); s->base = base; - s->card = sd_init(bd); + s->card = sd_init(bd, 0); s->irq[0] = irq0; s->irq[1] = irq1; qemu_register_reset(pl181_reset, s); diff --git a/hw/primecell.h b/hw/primecell.h index 072390bf0f..aa35adc027 100644 --- a/hw/primecell.h +++ b/hw/primecell.h @@ -21,13 +21,15 @@ void pl011_init(uint32_t base, qemu_irq irq, CharDriverState *chr, enum pl011_type type); /* pl022.c */ -void pl022_init(uint32_t base, qemu_irq irq, int (*xfer_cb)(void *, int), +typedef int (*ssi_xfer_cb)(void *, int); +void pl022_init(uint32_t base, qemu_irq irq, ssi_xfer_cb xfer_cb, void *opaque); /* pl050.c */ void pl050_init(uint32_t base, qemu_irq irq, int is_mouse); /* pl061.c */ +void pl061_float_high(void *opaque, uint8_t mask); qemu_irq *pl061_init(uint32_t base, qemu_irq irq, qemu_irq **out); /* pl080.c */ diff --git a/hw/pxa2xx_mmci.c b/hw/pxa2xx_mmci.c index 9d26b7959e..32b6a6f1ae 100644 --- a/hw/pxa2xx_mmci.c +++ b/hw/pxa2xx_mmci.c @@ -538,7 +538,7 @@ struct pxa2xx_mmci_s *pxa2xx_mmci_init(target_phys_addr_t base, cpu_register_physical_memory(base, 0x00100000, iomemtype); /* Instantiate the actual storage */ - s->card = sd_init(bd); + s->card = sd_init(bd, 1); register_savevm("pxa2xx_mmci", 0, 0, pxa2xx_mmci_save, pxa2xx_mmci_load, s); @@ -87,6 +87,7 @@ struct SDState { int pwd_len; int function_group[6]; + int spi; int current_cmd; int blk_written; uint32_t data_start; @@ -395,11 +396,16 @@ static void sd_cardchange(void *opaque) } } -SDState *sd_init(BlockDriverState *bs) +/* We do not model the chip select pin, so allow the board to select + whether card should be in SSI ot MMC/SD mode. It is also up to the + board to ensure that ssi transfers only occur when the chip select + is asserted. */ +SDState *sd_init(BlockDriverState *bs, int is_spi) { SDState *sd; sd = (SDState *) qemu_mallocz(sizeof(SDState)); + sd->spi = is_spi; sd_reset(sd, bs); bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd); return sd; @@ -567,16 +573,25 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, case 0: /* CMD0: GO_IDLE_STATE */ switch (sd->state) { case sd_inactive_state: - return sd_r0; + return sd->spi ? sd_r1 : sd_r0; default: sd->state = sd_idle_state; sd_reset(sd, sd->bdrv); - return sd_r0; + return sd->spi ? sd_r1 : sd_r0; } break; + case 1: /* CMD1: SEND_OP_CMD */ + if (!sd->spi) + goto bad_cmd; + + sd->state = sd_transfer_state; + return sd_r1; + case 2: /* CMD2: ALL_SEND_CID */ + if (sd->spi) + goto bad_cmd; switch (sd->state) { case sd_ready_state: sd->state = sd_identification_state; @@ -588,6 +603,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; case 3: /* CMD3: SEND_RELATIVE_ADDR */ + if (sd->spi) + goto bad_cmd; switch (sd->state) { case sd_identification_state: case sd_standby_state: @@ -601,6 +618,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; case 4: /* CMD4: SEND_DSR */ + if (sd->spi) + goto bad_cmd; switch (sd->state) { case sd_standby_state: break; @@ -611,6 +630,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; case 6: /* CMD6: SWITCH_FUNCTION */ + if (sd->spi) + goto bad_cmd; switch (sd->mode) { case sd_data_transfer_mode: sd_function_switch(sd, req.arg); @@ -625,6 +646,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; case 7: /* CMD7: SELECT/DESELECT_CARD */ + if (sd->spi) + goto bad_cmd; switch (sd->state) { case sd_standby_state: if (sd->rca != rca) @@ -668,6 +691,15 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, return sd_r2_s; + case sd_transfer_state: + if (!sd->spi) + break; + sd->state = sd_sendingdata_state; + memcpy(sd->data, sd->csd, 16); + sd->data_start = req.arg; + sd->data_offset = 0; + return sd_r1; + default: break; } @@ -681,12 +713,23 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, return sd_r2_i; + case sd_transfer_state: + if (!sd->spi) + break; + sd->state = sd_sendingdata_state; + memcpy(sd->data, sd->cid, 16); + sd->data_start = req.arg; + sd->data_offset = 0; + return sd_r1; + default: break; } break; case 11: /* CMD11: READ_DAT_UNTIL_STOP */ + if (sd->spi) + goto bad_cmd; switch (sd->state) { case sd_transfer_state: sd->state = sd_sendingdata_state; @@ -733,6 +776,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; case 15: /* CMD15: GO_INACTIVE_STATE */ + if (sd->spi) + goto bad_cmd; switch (sd->mode) { case sd_data_transfer_mode: if (sd->rca != rca) @@ -796,8 +841,13 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, /* Block write commands (Class 4) */ case 24: /* CMD24: WRITE_SINGLE_BLOCK */ + if (sd->spi) + goto unimplemented_cmd; switch (sd->state) { case sd_transfer_state: + /* Writing in SPI mode not implemented. */ + if (sd->spi) + break; sd->state = sd_receivingdata_state; sd->data_start = req.arg; sd->data_offset = 0; @@ -817,8 +867,13 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ + if (sd->spi) + goto unimplemented_cmd; switch (sd->state) { case sd_transfer_state: + /* Writing in SPI mode not implemented. */ + if (sd->spi) + break; sd->state = sd_receivingdata_state; sd->data_start = req.arg; sd->data_offset = 0; @@ -838,6 +893,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; case 26: /* CMD26: PROGRAM_CID */ + if (sd->spi) + goto bad_cmd; switch (sd->state) { case sd_transfer_state: sd->state = sd_receivingdata_state; @@ -851,6 +908,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; case 27: /* CMD27: PROGRAM_CSD */ + if (sd->spi) + goto unimplemented_cmd; switch (sd->state) { case sd_transfer_state: sd->state = sd_receivingdata_state; @@ -962,6 +1021,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, /* Lock card commands (Class 7) */ case 42: /* CMD42: LOCK_UNLOCK */ + if (sd->spi) + goto unimplemented_cmd; switch (sd->state) { case sd_transfer_state: sd->state = sd_receivingdata_state; @@ -1000,10 +1061,17 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, break; default: + bad_cmd: sd->card_status |= ILLEGAL_COMMAND; printf("SD: Unknown CMD%i\n", req.cmd); return sd_r0; + + unimplemented_cmd: + /* Commands that are recognised but not yet implemented in SPI mode. */ + sd->card_status |= ILLEGAL_COMMAND; + printf ("SD: CMD%i not implemented in SPI mode\n", req.cmd); + return sd_r0; } sd->card_status |= ILLEGAL_COMMAND; @@ -1069,6 +1137,11 @@ static sd_rsp_type_t sd_app_command(SDState *sd, break; case 41: /* ACMD41: SD_APP_OP_COND */ + if (sd->spi) { + /* SEND_OP_CMD */ + sd->state = sd_transfer_state; + return sd_r1; + } switch (sd->state) { case sd_idle_state: /* We accept any voltage. 10000 V is nothing. */ @@ -1414,6 +1487,14 @@ uint8_t sd_read_data(SDState *sd) sd->state = sd_transfer_state; break; + case 9: /* CMD9: SEND_CSD */ + case 10: /* CMD10: SEND_CID */ + ret = sd->data[sd->data_offset ++]; + + if (sd->data_offset >= 16) + sd->state = sd_transfer_state; + break; + case 11: /* CMD11: READ_DAT_UNTIL_STOP */ if (sd->data_offset == 0) BLK_READ_BLOCK(sd->data_start, sd->blk_len); @@ -67,7 +67,7 @@ struct sd_request_s { typedef struct SDState SDState; -SDState *sd_init(BlockDriverState *bs); +SDState *sd_init(BlockDriverState *bs, int is_spi); int sd_do_command(SDState *sd, struct sd_request_s *req, uint8_t *response); void sd_write_data(SDState *sd, uint8_t value); @@ -75,4 +75,8 @@ uint8_t sd_read_data(SDState *sd); void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert); int sd_data_ready(SDState *sd); +/* ssi-sd.c */ +int ssi_sd_xfer(void *opaque, int val); +void *ssi_sd_init(BlockDriverState *bs); + #endif /* __hw_sd_h */ diff --git a/hw/ssd0323.c b/hw/ssd0323.c index c31e49a918..4706b05f4a 100644 --- a/hw/ssd0323.c +++ b/hw/ssd0323.c @@ -157,6 +157,9 @@ int ssd0323_xfer_ssi(void *opaque, int data) case 0xe3: /* NOP. */ DATA(0); break; + case 0xff: /* Nasty hack because we don't handle chip selects + properly. */ + break; default: BADF("Unknown command: 0x%x\n", data); } diff --git a/hw/ssi-sd.c b/hw/ssi-sd.c new file mode 100644 index 0000000000..8b45fc4d1d --- /dev/null +++ b/hw/ssi-sd.c @@ -0,0 +1,202 @@ +/* + * SSI to SD card adapter. + * + * Copyright (c) 2007 CodeSourcery. + * Written by Paul Brook + * + * This code is licenced under the GPL. + */ + +#include "hw.h" +#include "sd.h" + +//#define DEBUG_SSI_SD 1 + +#ifdef DEBUG_SSI_SD +#define DPRINTF(fmt, args...) \ +do { printf("ssi_sd: " fmt , ##args); } while (0) +#define BADF(fmt, args...) \ +do { fprintf(stderr, "ssi_sd: error: " fmt , ##args); exit(1);} while (0) +#else +#define DPRINTF(fmt, args...) do {} while(0) +#define BADF(fmt, args...) \ +do { fprintf(stderr, "ssi_sd: error: " fmt , ##args);} while (0) +#endif + +typedef enum { + SSI_SD_CMD, + SSI_SD_CMDARG, + SSI_SD_RESPONSE, + SSI_SD_DATA_START, + SSI_SD_DATA_READ, +} ssi_sd_mode; + +typedef struct { + ssi_sd_mode mode; + int cmd; + uint8_t cmdarg[4]; + uint8_t response[5]; + int arglen; + int response_pos; + int stopping; + SDState *sd; +} ssi_sd_state; + +/* State word bits. */ +#define SSI_SDR_LOCKED 0x0001 +#define SSI_SDR_WP_ERASE 0x0002 +#define SSI_SDR_ERROR 0x0004 +#define SSI_SDR_CC_ERROR 0x0008 +#define SSI_SDR_ECC_FAILED 0x0010 +#define SSI_SDR_WP_VIOLATION 0x0020 +#define SSI_SDR_ERASE_PARAM 0x0040 +#define SSI_SDR_OUT_OF_RANGE 0x0080 +#define SSI_SDR_IDLE 0x0100 +#define SSI_SDR_ERASE_RESET 0x0200 +#define SSI_SDR_ILLEGAL_COMMAND 0x0400 +#define SSI_SDR_COM_CRC_ERROR 0x0800 +#define SSI_SDR_ERASE_SEQ_ERROR 0x1000 +#define SSI_SDR_ADDRESS_ERROR 0x2000 +#define SSI_SDR_PARAMETER_ERROR 0x4000 + +int ssi_sd_xfer(void *opaque, int val) +{ + ssi_sd_state *s = (ssi_sd_state *)opaque; + + /* Special case: allow CMD12 (STOP TRANSMISSION) while reading data. */ + if (s->mode == SSI_SD_DATA_READ && val == 0x4d) { + s->mode = SSI_SD_CMD; + /* There must be at least one byte delay before the card responds. */ + s->stopping = 1; + } + + switch (s->mode) { + case SSI_SD_CMD: + if (val == 0xff) { + DPRINTF("NULL command\n"); + return 0xff; + } + s->cmd = val & 0x3f; + s->mode = SSI_SD_CMDARG; + s->arglen = 0; + return 0xff; + case SSI_SD_CMDARG: + if (s->arglen == 4) { + struct sd_request_s request; + uint8_t longresp[16]; + /* FIXME: Check CRC. */ + request.cmd = s->cmd; + request.arg = (s->cmdarg[0] << 24) | (s->cmdarg[1] << 16) + | (s->cmdarg[2] << 8) | s->cmdarg[3]; + DPRINTF("CMD%d arg 0x%08x\n", s->cmd, request.arg); + s->arglen = sd_do_command(s->sd, &request, longresp); + if (s->arglen <= 0) { + s->arglen = 1; + s->response[0] = 4; + DPRINTF("SD command failed\n"); + } else if (s->cmd == 58) { + /* CMD58 returns R3 response (OCR) */ + DPRINTF("Returned OCR\n"); + s->arglen = 5; + s->response[0] = 1; + memcpy(&s->response[1], longresp, 4); + } else if (s->arglen != 4) { + BADF("Unexpected response to cmd %d\n", s->cmd); + /* Illegal command is about as near as we can get. */ + s->arglen = 1; + s->response[0] = 4; + } else { + /* All other commands return status. */ + uint32_t cardstatus; + uint16_t status; + /* CMD13 returns a 2-byte statuse work. Other commands + only return the first byte. */ + s->arglen = (s->cmd == 13) ? 2 : 1; + cardstatus = (longresp[0] << 24) | (longresp[1] << 16) + | (longresp[2] << 8) | longresp[3]; + status = 0; + if (((cardstatus >> 9) & 0xf) < 4) + status |= SSI_SDR_IDLE; + if (cardstatus & ERASE_RESET) + status |= SSI_SDR_ERASE_RESET; + if (cardstatus & ILLEGAL_COMMAND) + status |= SSI_SDR_ILLEGAL_COMMAND; + if (cardstatus & COM_CRC_ERROR) + status |= SSI_SDR_COM_CRC_ERROR; + if (cardstatus & ERASE_SEQ_ERROR) + status |= SSI_SDR_ERASE_SEQ_ERROR; + if (cardstatus & ADDRESS_ERROR) + status |= SSI_SDR_ADDRESS_ERROR; + if (cardstatus & CARD_IS_LOCKED) + status |= SSI_SDR_LOCKED; + if (cardstatus & (LOCK_UNLOCK_FAILED | WP_ERASE_SKIP)) + status |= SSI_SDR_WP_ERASE; + if (cardstatus & SD_ERROR) + status |= SSI_SDR_ERROR; + if (cardstatus & CC_ERROR) + status |= SSI_SDR_CC_ERROR; + if (cardstatus & CARD_ECC_FAILED) + status |= SSI_SDR_ECC_FAILED; + if (cardstatus & WP_VIOLATION) + status |= SSI_SDR_WP_VIOLATION; + if (cardstatus & ERASE_PARAM) + status |= SSI_SDR_ERASE_PARAM; + if (cardstatus & (OUT_OF_RANGE | CID_CSD_OVERWRITE)) + status |= SSI_SDR_OUT_OF_RANGE; + /* ??? Don't know what Parameter Error really means, so + assume it's set if the second byte is nonzero. */ + if (status & 0xff) + status |= SSI_SDR_PARAMETER_ERROR; + s->response[0] = status >> 8; + s->response[1] = status; + DPRINTF("Card status 0x%02x\n", status); + } + s->mode = SSI_SD_RESPONSE; + s->response_pos = 0; + } else { + s->cmdarg[s->arglen++] = val; + } + return 0xff; + case SSI_SD_RESPONSE: + if (s->stopping) { + s->stopping = 0; + return 0xff; + } + if (s->response_pos < s->arglen) { + DPRINTF("Response 0x%02x\n", s->response[s->response_pos]); + return s->response[s->response_pos++]; + } + if (sd_data_ready(s->sd)) { + DPRINTF("Data read\n"); + s->mode = SSI_SD_DATA_START; + } else { + DPRINTF("End of command\n"); + s->mode = SSI_SD_CMD; + } + return 0xff; + case SSI_SD_DATA_START: + DPRINTF("Start read block\n"); + s->mode = SSI_SD_DATA_READ; + return 0xfe; + case SSI_SD_DATA_READ: + val = sd_read_data(s->sd); + if (!sd_data_ready(s->sd)) { + DPRINTF("Data read end\n"); + s->mode = SSI_SD_CMD; + } + return val; + } + /* Should never happen. */ + return 0xff; +} + +void *ssi_sd_init(BlockDriverState *bs) +{ + ssi_sd_state *s; + + s = (ssi_sd_state *)qemu_mallocz(sizeof(ssi_sd_state)); + s->mode = SSI_SD_CMD; + s->sd = sd_init(bs, 1); + return s; +} + diff --git a/hw/stellaris.c b/hw/stellaris.c index 01ed374a8c..5f06388a94 100644 --- a/hw/stellaris.c +++ b/hw/stellaris.c @@ -14,6 +14,7 @@ #include "qemu-timer.h" #include "i2c.h" #include "net.h" +#include "sd.h" #include "sysemu.h" #include "boards.h" @@ -1000,6 +1001,51 @@ static qemu_irq stellaris_adc_init(uint32_t base, qemu_irq irq) return qi[0]; } +/* Some boards have both an OLED controller and SD card connected to + the same SSI port, with the SD card chip select connected to a + GPIO pin. Technically the OLED chip select is connected to the SSI + Fss pin. We do not bother emulating that as both devices should + never be selected simultaneously, and our OLED controller ignores stray + 0xff commands that occur when deselecting the SD card. */ + +typedef struct { + ssi_xfer_cb xfer_cb[2]; + void *opaque[2]; + qemu_irq irq; + int current_dev; +} stellaris_ssi_bus_state; + +static void stellaris_ssi_bus_select(void *opaque, int irq, int level) +{ + stellaris_ssi_bus_state *s = (stellaris_ssi_bus_state *)opaque; + + s->current_dev = level; +} + +static int stellaris_ssi_bus_xfer(void *opaque, int val) +{ + stellaris_ssi_bus_state *s = (stellaris_ssi_bus_state *)opaque; + + return s->xfer_cb[s->current_dev](s->opaque[s->current_dev], val); +} + +static void *stellaris_ssi_bus_init(qemu_irq *irqp, + ssi_xfer_cb cb0, void *opaque0, + ssi_xfer_cb cb1, void *opaque1) +{ + qemu_irq *qi; + stellaris_ssi_bus_state *s; + + s = (stellaris_ssi_bus_state *)qemu_mallocz(sizeof(stellaris_ssi_bus_state)); + s->xfer_cb[0] = cb0; + s->opaque[0] = opaque0; + s->xfer_cb[1] = cb1; + s->opaque[1] = opaque1; + qi = qemu_allocate_irqs(stellaris_ssi_bus_select, s, 1); + *irqp = *qi; + return s; +} + /* Board init. */ static stellaris_board_info stellaris_boards[] = { { "LM3S811EVB", @@ -1085,9 +1131,19 @@ static void stellaris_init(const char *kernel_filename, const char *cpu_model, if (board->dc2 & (1 << 4)) { if (board->peripherals & BP_OLED_SSI) { void * oled; - /* FIXME: Implement chip select for OLED/MMC. */ + void * sd; + void *ssi_bus; + oled = ssd0323_init(ds, &gpio_out[GPIO_C][7]); - pl022_init(0x40008000, pic[7], ssd0323_xfer_ssi, oled); + sd = ssi_sd_init(sd_bdrv); + + ssi_bus = stellaris_ssi_bus_init(&gpio_out[GPIO_D][0], + ssi_sd_xfer, sd, + ssd0323_xfer_ssi, oled); + + pl022_init(0x40008000, pic[7], stellaris_ssi_bus_xfer, ssi_bus); + /* Make sure the select pin is high. */ + qemu_irq_raise(gpio_out[GPIO_D][0]); } else { pl022_init(0x40008000, pic[7], NULL, NULL); } |