diff options
| -rw-r--r-- | default-configs/arm-softmmu.mak | 2 | ||||
| -rw-r--r-- | hw/Makefile.objs | 1 | ||||
| -rw-r--r-- | hw/sdhci.c | 1300 | ||||
| -rw-r--r-- | hw/sdhci.h | 312 |
4 files changed, 1615 insertions, 0 deletions
diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak index b40f7b08e2..68b204547c 100644 --- a/default-configs/arm-softmmu.mak +++ b/default-configs/arm-softmmu.mak @@ -47,3 +47,5 @@ CONFIG_XGMAC=y CONFIG_VERSATILE_PCI=y CONFIG_VERSATILE_I2C=y + +CONFIG_SDHCI=y diff --git a/hw/Makefile.objs b/hw/Makefile.objs index a1f3a808ac..40ebe466ad 100644 --- a/hw/Makefile.objs +++ b/hw/Makefile.objs @@ -43,6 +43,7 @@ common-obj-y += ccid-card-passthru.o common-obj-$(CONFIG_SMARTCARD_NSS) += ccid-card-emulated.o endif common-obj-$(CONFIG_I8259) += i8259_common.o i8259.o +common-obj-$(CONFIG_SDHCI) += sdhci.o common-obj-y += fifo.o common-obj-y += pam.o diff --git a/hw/sdhci.c b/hw/sdhci.c new file mode 100644 index 0000000000..e535df9671 --- /dev/null +++ b/hw/sdhci.c @@ -0,0 +1,1300 @@ +/* + * SD Association Host Standard Specification v2.0 controller emulation + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * Mitsyanko Igor <i.mitsyanko@samsung.com> + * Peter A.G. Crosthwaite <peter.crosthwaite@petalogix.com> + * + * Based on MMC controller for Samsung S5PC1xx-based board emulation + * by Alexey Merkulov and Vladimir Monakhov. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "hw.h" +#include "sysemu/blockdev.h" +#include "sysemu/dma.h" +#include "qemu/timer.h" +#include "block/block_int.h" +#include "qemu/bitops.h" + +#include "sdhci.h" + +/* host controller debug messages */ +#ifndef SDHC_DEBUG +#define SDHC_DEBUG 0 +#endif + +#if SDHC_DEBUG == 0 + #define DPRINT_L1(fmt, args...) do { } while (0) + #define DPRINT_L2(fmt, args...) do { } while (0) + #define ERRPRINT(fmt, args...) do { } while (0) +#elif SDHC_DEBUG == 1 + #define DPRINT_L1(fmt, args...) \ + do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0) + #define DPRINT_L2(fmt, args...) do { } while (0) + #define ERRPRINT(fmt, args...) \ + do {fprintf(stderr, "QEMU SDHC ERROR: "fmt, ## args); } while (0) +#else + #define DPRINT_L1(fmt, args...) \ + do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0) + #define DPRINT_L2(fmt, args...) \ + do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0) + #define ERRPRINT(fmt, args...) \ + do {fprintf(stderr, "QEMU SDHC ERROR: "fmt, ## args); } while (0) +#endif + +/* Default SD/MMC host controller features information, which will be + * presented in CAPABILITIES register of generic SD host controller at reset. + * If not stated otherwise: + * 0 - not supported, 1 - supported, other - prohibited. + */ +#define SDHC_CAPAB_64BITBUS 0ul /* 64-bit System Bus Support */ +#define SDHC_CAPAB_18V 1ul /* Voltage support 1.8v */ +#define SDHC_CAPAB_30V 0ul /* Voltage support 3.0v */ +#define SDHC_CAPAB_33V 1ul /* Voltage support 3.3v */ +#define SDHC_CAPAB_SUSPRESUME 0ul /* Suspend/resume support */ +#define SDHC_CAPAB_SDMA 1ul /* SDMA support */ +#define SDHC_CAPAB_HIGHSPEED 1ul /* High speed support */ +#define SDHC_CAPAB_ADMA1 1ul /* ADMA1 support */ +#define SDHC_CAPAB_ADMA2 1ul /* ADMA2 support */ +/* Maximum host controller R/W buffers size + * Possible values: 512, 1024, 2048 bytes */ +#define SDHC_CAPAB_MAXBLOCKLENGTH 512ul +/* Maximum clock frequency for SDclock in MHz + * value in range 10-63 MHz, 0 - not defined */ +#define SDHC_CAPAB_BASECLKFREQ 0ul +#define SDHC_CAPAB_TOUNIT 1ul /* Timeout clock unit 0 - kHz, 1 - MHz */ +/* Timeout clock frequency 1-63, 0 - not defined */ +#define SDHC_CAPAB_TOCLKFREQ 0ul + +/* Now check all parameters and calculate CAPABILITIES REGISTER value */ +#if SDHC_CAPAB_64BITBUS > 1 || SDHC_CAPAB_18V > 1 || SDHC_CAPAB_30V > 1 || \ + SDHC_CAPAB_33V > 1 || SDHC_CAPAB_SUSPRESUME > 1 || SDHC_CAPAB_SDMA > 1 || \ + SDHC_CAPAB_HIGHSPEED > 1 || SDHC_CAPAB_ADMA2 > 1 || SDHC_CAPAB_ADMA1 > 1 ||\ + SDHC_CAPAB_TOUNIT > 1 +#error Capabilities features can have value 0 or 1 only! +#endif + +#if SDHC_CAPAB_MAXBLOCKLENGTH == 512 +#define MAX_BLOCK_LENGTH 0ul +#elif SDHC_CAPAB_MAXBLOCKLENGTH == 1024 +#define MAX_BLOCK_LENGTH 1ul +#elif SDHC_CAPAB_MAXBLOCKLENGTH == 2048 +#define MAX_BLOCK_LENGTH 2ul +#else +#error Max host controller block size can have value 512, 1024 or 2048 only! +#endif + +#if (SDHC_CAPAB_BASECLKFREQ > 0 && SDHC_CAPAB_BASECLKFREQ < 10) || \ + SDHC_CAPAB_BASECLKFREQ > 63 +#error SDclock frequency can have value in range 0, 10-63 only! +#endif + +#if SDHC_CAPAB_TOCLKFREQ > 63 +#error Timeout clock frequency can have value in range 0-63 only! +#endif + +#define SDHC_CAPAB_REG_DEFAULT \ + ((SDHC_CAPAB_64BITBUS << 28) | (SDHC_CAPAB_18V << 26) | \ + (SDHC_CAPAB_30V << 25) | (SDHC_CAPAB_33V << 24) | \ + (SDHC_CAPAB_SUSPRESUME << 23) | (SDHC_CAPAB_SDMA << 22) | \ + (SDHC_CAPAB_HIGHSPEED << 21) | (SDHC_CAPAB_ADMA1 << 20) | \ + (SDHC_CAPAB_ADMA2 << 19) | (MAX_BLOCK_LENGTH << 16) | \ + (SDHC_CAPAB_BASECLKFREQ << 8) | (SDHC_CAPAB_TOUNIT << 7) | \ + (SDHC_CAPAB_TOCLKFREQ)) + +#define MASKED_WRITE(reg, mask, val) (reg = (reg & (mask)) | (val)) + +static uint8_t sdhci_slotint(SDHCIState *s) +{ + return (s->norintsts & s->norintsigen) || (s->errintsts & s->errintsigen) || + ((s->norintsts & SDHC_NIS_INSERT) && (s->wakcon & SDHC_WKUP_ON_INS)) || + ((s->norintsts & SDHC_NIS_REMOVE) && (s->wakcon & SDHC_WKUP_ON_RMV)); +} + +static inline void sdhci_update_irq(SDHCIState *s) +{ + qemu_set_irq(s->irq, sdhci_slotint(s)); +} + +static void sdhci_raise_insertion_irq(void *opaque) +{ + SDHCIState *s = (SDHCIState *)opaque; + + if (s->norintsts & SDHC_NIS_REMOVE) { + qemu_mod_timer(s->insert_timer, + qemu_get_clock_ns(vm_clock) + SDHC_INSERTION_DELAY); + } else { + s->prnsts = 0x1ff0000; + if (s->norintstsen & SDHC_NISEN_INSERT) { + s->norintsts |= SDHC_NIS_INSERT; + } + sdhci_update_irq(s); + } +} + +static void sdhci_insert_eject_cb(void *opaque, int irq, int level) +{ + SDHCIState *s = (SDHCIState *)opaque; + DPRINT_L1("Card state changed: %s!\n", level ? "insert" : "eject"); + + if ((s->norintsts & SDHC_NIS_REMOVE) && level) { + /* Give target some time to notice card ejection */ + qemu_mod_timer(s->insert_timer, + qemu_get_clock_ns(vm_clock) + SDHC_INSERTION_DELAY); + } else { + if (level) { + s->prnsts = 0x1ff0000; + if (s->norintstsen & SDHC_NISEN_INSERT) { + s->norintsts |= SDHC_NIS_INSERT; + } + } else { + s->prnsts = 0x1fa0000; + s->pwrcon &= ~SDHC_POWER_ON; + s->clkcon &= ~SDHC_CLOCK_SDCLK_EN; + if (s->norintstsen & SDHC_NISEN_REMOVE) { + s->norintsts |= SDHC_NIS_REMOVE; + } + } + sdhci_update_irq(s); + } +} + +static void sdhci_card_readonly_cb(void *opaque, int irq, int level) +{ + SDHCIState *s = (SDHCIState *)opaque; + + if (level) { + s->prnsts &= ~SDHC_WRITE_PROTECT; + } else { + /* Write enabled */ + s->prnsts |= SDHC_WRITE_PROTECT; + } +} + +static void sdhci_reset(SDHCIState *s) +{ + qemu_del_timer(s->insert_timer); + qemu_del_timer(s->transfer_timer); + /* Set all registers to 0. Capabilities registers are not cleared + * and assumed to always preserve their value, given to them during + * initialization */ + memset(&s->sdmasysad, 0, (uintptr_t)&s->capareg - (uintptr_t)&s->sdmasysad); + + sd_set_cb(s->card, s->ro_cb, s->eject_cb); + s->data_count = 0; + s->stopped_state = sdhc_not_stopped; +} + +static void sdhci_do_data_transfer(void *opaque) +{ + SDHCIState *s = (SDHCIState *)opaque; + + SDHCI_GET_CLASS(s)->data_transfer(s); +} + +static void sdhci_send_command(SDHCIState *s) +{ + SDRequest request; + uint8_t response[16]; + int rlen; + + s->errintsts = 0; + s->acmd12errsts = 0; + request.cmd = s->cmdreg >> 8; + request.arg = s->argument; + DPRINT_L1("sending CMD%u ARG[0x%08x]\n", request.cmd, request.arg); + rlen = sd_do_command(s->card, &request, response); + + if (s->cmdreg & SDHC_CMD_RESPONSE) { + if (rlen == 4) { + s->rspreg[0] = (response[0] << 24) | (response[1] << 16) | + (response[2] << 8) | response[3]; + s->rspreg[1] = s->rspreg[2] = s->rspreg[3] = 0; + DPRINT_L1("Response: RSPREG[31..0]=0x%08x\n", s->rspreg[0]); + } else if (rlen == 16) { + s->rspreg[0] = (response[11] << 24) | (response[12] << 16) | + (response[13] << 8) | response[14]; + s->rspreg[1] = (response[7] << 24) | (response[8] << 16) | + (response[9] << 8) | response[10]; + s->rspreg[2] = (response[3] << 24) | (response[4] << 16) | + (response[5] << 8) | response[6]; + s->rspreg[3] = (response[0] << 16) | (response[1] << 8) | + response[2]; + DPRINT_L1("Response received:\n RSPREG[127..96]=0x%08x, RSPREG[95.." + "64]=0x%08x,\n RSPREG[63..32]=0x%08x, RSPREG[31..0]=0x%08x\n", + s->rspreg[3], s->rspreg[2], s->rspreg[1], s->rspreg[0]); + } else { + ERRPRINT("Timeout waiting for command response\n"); + if (s->errintstsen & SDHC_EISEN_CMDTIMEOUT) { + s->errintsts |= SDHC_EIS_CMDTIMEOUT; + s->norintsts |= SDHC_NIS_ERR; + } + } + + if ((s->norintstsen & SDHC_NISEN_TRSCMP) && + (s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY) { + s->norintsts |= SDHC_NIS_TRSCMP; + } + } else if (rlen != 0 && (s->errintstsen & SDHC_EISEN_CMDIDX)) { + s->errintsts |= SDHC_EIS_CMDIDX; + s->norintsts |= SDHC_NIS_ERR; + } + + if (s->norintstsen & SDHC_NISEN_CMDCMP) { + s->norintsts |= SDHC_NIS_CMDCMP; + } + + sdhci_update_irq(s); + + if (s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) { + sdhci_do_data_transfer(s); + } +} + +static void sdhci_end_transfer(SDHCIState *s) +{ + /* Automatically send CMD12 to stop transfer if AutoCMD12 enabled */ + if ((s->trnmod & SDHC_TRNS_ACMD12) != 0) { + SDRequest request; + uint8_t response[16]; + + request.cmd = 0x0C; + request.arg = 0; + DPRINT_L1("Automatically issue CMD%d %08x\n", request.cmd, request.arg); + sd_do_command(s->card, &request, response); + /* Auto CMD12 response goes to the upper Response register */ + s->rspreg[3] = (response[0] << 24) | (response[1] << 16) | + (response[2] << 8) | response[3]; + } + + s->prnsts &= ~(SDHC_DOING_READ | SDHC_DOING_WRITE | + SDHC_DAT_LINE_ACTIVE | SDHC_DATA_INHIBIT | + SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE); + + if (s->norintstsen & SDHC_NISEN_TRSCMP) { + s->norintsts |= SDHC_NIS_TRSCMP; + } + + sdhci_update_irq(s); +} + +/* + * Programmed i/o data transfer + */ + +/* Fill host controller's read buffer with BLKSIZE bytes of data from card */ +static void sdhci_read_block_from_card(SDHCIState *s) +{ + int index = 0; + + if ((s->trnmod & SDHC_TRNS_MULTI) && + (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) { + return; + } + + for (index = 0; index < (s->blksize & 0x0fff); index++) { + s->fifo_buffer[index] = sd_read_data(s->card); + } + + /* New data now available for READ through Buffer Port Register */ + s->prnsts |= SDHC_DATA_AVAILABLE; + if (s->norintstsen & SDHC_NISEN_RBUFRDY) { + s->norintsts |= SDHC_NIS_RBUFRDY; + } + + /* Clear DAT line active status if that was the last block */ + if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || + ((s->trnmod & SDHC_TRNS_MULTI) && s->blkcnt == 1)) { + s->prnsts &= ~SDHC_DAT_LINE_ACTIVE; + } + + /* If stop at block gap request was set and it's not the last block of + * data - generate Block Event interrupt */ + if (s->stopped_state == sdhc_gap_read && (s->trnmod & SDHC_TRNS_MULTI) && + s->blkcnt != 1) { + s->prnsts &= ~SDHC_DAT_LINE_ACTIVE; + if (s->norintstsen & SDHC_EISEN_BLKGAP) { + s->norintsts |= SDHC_EIS_BLKGAP; + } + } + + sdhci_update_irq(s); +} + +/* Read @size byte of data from host controller @s BUFFER DATA PORT register */ +static uint32_t sdhci_read_dataport(SDHCIState *s, unsigned size) +{ + uint32_t value = 0; + int i; + + /* first check that a valid data exists in host controller input buffer */ + if ((s->prnsts & SDHC_DATA_AVAILABLE) == 0) { + ERRPRINT("Trying to read from empty buffer\n"); + return 0; + } + + for (i = 0; i < size; i++) { + value |= s->fifo_buffer[s->data_count] << i * 8; + s->data_count++; + /* check if we've read all valid data (blksize bytes) from buffer */ + if ((s->data_count) >= (s->blksize & 0x0fff)) { + DPRINT_L2("All %u bytes of data have been read from input buffer\n", + s->data_count); + s->prnsts &= ~SDHC_DATA_AVAILABLE; /* no more data in a buffer */ + s->data_count = 0; /* next buff read must start at position [0] */ + + if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { + s->blkcnt--; + } + + /* if that was the last block of data */ + if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || + ((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) || + /* stop at gap request */ + (s->stopped_state == sdhc_gap_read && + !(s->prnsts & SDHC_DAT_LINE_ACTIVE))) { + SDHCI_GET_CLASS(s)->end_data_transfer(s); + } else { /* if there are more data, read next block from card */ + SDHCI_GET_CLASS(s)->read_block_from_card(s); + } + break; + } + } + + return value; +} + +/* Write data from host controller FIFO to card */ +static void sdhci_write_block_to_card(SDHCIState *s) +{ + int index = 0; + + if (s->prnsts & SDHC_SPACE_AVAILABLE) { + if (s->norintstsen & SDHC_NISEN_WBUFRDY) { + s->norintsts |= SDHC_NIS_WBUFRDY; + } + sdhci_update_irq(s); + return; + } + + if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { + if (s->blkcnt == 0) { + return; + } else { + s->blkcnt--; + } + } + + for (index = 0; index < (s->blksize & 0x0fff); index++) { + sd_write_data(s->card, s->fifo_buffer[index]); + } + + /* Next data can be written through BUFFER DATORT register */ + s->prnsts |= SDHC_SPACE_AVAILABLE; + if (s->norintstsen & SDHC_NISEN_WBUFRDY) { + s->norintsts |= SDHC_NIS_WBUFRDY; + } + + /* Finish transfer if that was the last block of data */ + if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || + ((s->trnmod & SDHC_TRNS_MULTI) && + (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0))) { + SDHCI_GET_CLASS(s)->end_data_transfer(s); + } + + /* Generate Block Gap Event if requested and if not the last block */ + if (s->stopped_state == sdhc_gap_write && (s->trnmod & SDHC_TRNS_MULTI) && + s->blkcnt > 0) { + s->prnsts &= ~SDHC_DOING_WRITE; + if (s->norintstsen & SDHC_EISEN_BLKGAP) { + s->norintsts |= SDHC_EIS_BLKGAP; + } + SDHCI_GET_CLASS(s)->end_data_transfer(s); + } + + sdhci_update_irq(s); +} + +/* Write @size bytes of @value data to host controller @s Buffer Data Port + * register */ +static void sdhci_write_dataport(SDHCIState *s, uint32_t value, unsigned size) +{ + unsigned i; + + /* Check that there is free space left in a buffer */ + if (!(s->prnsts & SDHC_SPACE_AVAILABLE)) { + ERRPRINT("Can't write to data buffer: buffer full\n"); + return; + } + + for (i = 0; i < size; i++) { + s->fifo_buffer[s->data_count] = value & 0xFF; + s->data_count++; + value >>= 8; + if (s->data_count >= (s->blksize & 0x0fff)) { + DPRINT_L2("write buffer filled with %u bytes of data\n", + s->data_count); + s->data_count = 0; + s->prnsts &= ~SDHC_SPACE_AVAILABLE; + if (s->prnsts & SDHC_DOING_WRITE) { + SDHCI_GET_CLASS(s)->write_block_to_card(s); + } + } + } +} + +/* + * Single DMA data transfer + */ + +/* Multi block SDMA transfer */ +static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s) +{ + bool page_aligned = false; + unsigned int n, begin; + const uint16_t block_size = s->blksize & 0x0fff; + uint32_t boundary_chk = 1 << (((s->blksize & 0xf000) >> 12) + 12); + uint32_t boundary_count = boundary_chk - (s->sdmasysad % boundary_chk); + + /* XXX: Some sd/mmc drivers (for example, u-boot-slp) do not account for + * possible stop at page boundary if initial address is not page aligned, + * allow them to work properly */ + if ((s->sdmasysad % boundary_chk) == 0) { + page_aligned = true; + } + + if (s->trnmod & SDHC_TRNS_READ) { + s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | + SDHC_DAT_LINE_ACTIVE; + while (s->blkcnt) { + if (s->data_count == 0) { + for (n = 0; n < block_size; n++) { + s->fifo_buffer[n] = sd_read_data(s->card); + } + } + begin = s->data_count; + if (((boundary_count + begin) < block_size) && page_aligned) { + s->data_count = boundary_count + begin; + boundary_count = 0; + } else { + s->data_count = block_size; + boundary_count -= block_size - begin; + if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { + s->blkcnt--; + } + } + dma_memory_write(&dma_context_memory, s->sdmasysad, + &s->fifo_buffer[begin], s->data_count - begin); + s->sdmasysad += s->data_count - begin; + if (s->data_count == block_size) { + s->data_count = 0; + } + if (page_aligned && boundary_count == 0) { + break; + } + } + } else { + s->prnsts |= SDHC_DOING_WRITE | SDHC_DATA_INHIBIT | + SDHC_DAT_LINE_ACTIVE; + while (s->blkcnt) { + begin = s->data_count; + if (((boundary_count + begin) < block_size) && page_aligned) { + s->data_count = boundary_count + begin; + boundary_count = 0; + } else { + s->data_count = block_size; + boundary_count -= block_size - begin; + } + dma_memory_read(&dma_context_memory, s->sdmasysad, + &s->fifo_buffer[begin], s->data_count); + s->sdmasysad += s->data_count - begin; + if (s->data_count == block_size) { + for (n = 0; n < block_size; n++) { + sd_write_data(s->card, s->fifo_buffer[n]); + } + s->data_count = 0; + if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { + s->blkcnt--; + } + } + if (page_aligned && boundary_count == 0) { + break; + } + } + } + + if (s->blkcnt == 0) { + SDHCI_GET_CLASS(s)->end_data_transfer(s); + } else { + if (s->norintstsen & SDHC_NISEN_DMA) { + s->norintsts |= SDHC_NIS_DMA; + } + sdhci_update_irq(s); + } +} + +/* single block SDMA transfer */ + +static void sdhci_sdma_transfer_single_block(SDHCIState *s) +{ + int n; + uint32_t datacnt = s->blksize & 0x0fff; + + if (s->trnmod & SDHC_TRNS_READ) { + for (n = 0; n < datacnt; n++) { + s->fifo_buffer[n] = sd_read_data(s->card); + } + dma_memory_write(&dma_context_memory, s->sdmasysad, s->fifo_buffer, + datacnt); + } else { + dma_memory_read(&dma_context_memory, s->sdmasysad, s->fifo_buffer, + datacnt); + for (n = 0; n < datacnt; n++) { + sd_write_data(s->card, s->fifo_buffer[n]); + } + } + + if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { + s->blkcnt--; + } + + SDHCI_GET_CLASS(s)->end_data_transfer(s); +} + +typedef struct ADMADescr { + hwaddr addr; + uint16_t length; + uint8_t attr; + uint8_t incr; +} ADMADescr; + +static void get_adma_description(SDHCIState *s, ADMADescr *dscr) +{ + uint32_t adma1 = 0; + uint64_t adma2 = 0; + hwaddr entry_addr = (hwaddr)s->admasysaddr; + switch (SDHC_DMA_TYPE(s->hostctl)) { + case SDHC_CTRL_ADMA2_32: + dma_memory_read(&dma_context_memory, entry_addr, (uint8_t *)&adma2, + sizeof(adma2)); + adma2 = le64_to_cpu(adma2); + /* The spec does not specify endianness of descriptor table. + * We currently assume that it is LE. + */ + dscr->addr = (hwaddr)extract64(adma2, 32, 32) & ~0x3ull; + dscr->length = (uint16_t)extract64(adma2, 16, 16); + dscr->attr = (uint8_t)extract64(adma2, 0, 7); + dscr->incr = 8; + break; + case SDHC_CTRL_ADMA1_32: + dma_memory_read(&dma_context_memory, entry_addr, (uint8_t *)&adma1, + sizeof(adma1)); + adma1 = le32_to_cpu(adma1); + dscr->addr = (hwaddr)(adma1 & 0xFFFFF000); + dscr->attr = (uint8_t)extract32(adma1, 0, 7); + dscr->incr = 4; + if ((dscr->attr & SDHC_ADMA_ATTR_ACT_MASK) == SDHC_ADMA_ATTR_SET_LEN) { + dscr->length = (uint16_t)extract32(adma1, 12, 16); + } else { + dscr->length = 4096; + } + break; + case SDHC_CTRL_ADMA2_64: + dma_memory_read(&dma_context_memory, entry_addr, + (uint8_t *)(&dscr->attr), 1); + dma_memory_read(&dma_context_memory, entry_addr + 2, + (uint8_t *)(&dscr->length), 2); + dscr->length = le16_to_cpu(dscr->length); + dma_memory_read(&dma_context_memory, entry_addr + 4, + (uint8_t *)(&dscr->addr), 8); + dscr->attr = le64_to_cpu(dscr->attr); + dscr->attr &= 0xfffffff8; + dscr->incr = 12; + break; + } +} + +/* Advanced DMA data transfer */ + +static void sdhci_do_adma(SDHCIState *s) +{ + unsigned int n, begin, length; + const uint16_t block_size = s->blksize & 0x0fff; + ADMADescr dscr; + int i; + + for (i = 0; i < SDHC_ADMA_DESCS_PER_DELAY; ++i) { + s->admaerr &= ~SDHC_ADMAERR_LENGTH_MISMATCH; + + get_adma_description(s, &dscr); + DPRINT_L2("ADMA loop: addr=" TARGET_FMT_plx ", len=%d, attr=%x\n", + dscr.addr, dscr.length, dscr.attr); + + if ((dscr.attr & SDHC_ADMA_ATTR_VALID) == 0) { + /* Indicate that error occurred in ST_FDS state */ + s->admaerr &= ~SDHC_ADMAERR_STATE_MASK; + s->admaerr |= SDHC_ADMAERR_STATE_ST_FDS; + + /* Generate ADMA error interrupt */ + if (s->errintstsen & SDHC_EISEN_ADMAERR) { + s->errintsts |= SDHC_EIS_ADMAERR; + s->norintsts |= SDHC_NIS_ERR; + } + + sdhci_update_irq(s); + return; + } + + length = dscr.length ? dscr.length : 65536; + + switch (dscr.attr & SDHC_ADMA_ATTR_ACT_MASK) { + case SDHC_ADMA_ATTR_ACT_TRAN: /* data transfer */ + + if (s->trnmod & SDHC_TRNS_READ) { + while (length) { + if (s->data_count == 0) { + for (n = 0; n < block_size; n++) { + s->fifo_buffer[n] = sd_read_data(s->card); + } + } + begin = s->data_count; + if ((length + begin) < block_size) { + s->data_count = length + begin; + length = 0; + } else { + s->data_count = block_size; + length -= block_size - begin; + } + dma_memory_write(&dma_context_memory, dscr.addr, + &s->fifo_buffer[begin], + s->data_count - begin); + dscr.addr += s->data_count - begin; + if (s->data_count == block_size) { + s->data_count = 0; + if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { + s->blkcnt--; + if (s->blkcnt == 0) { + break; + } + } + } + } + } else { + while (length) { + begin = s->data_count; + if ((length + begin) < block_size) { + s->data_count = length + begin; + length = 0; + } else { + s->data_count = block_size; + length -= block_size - begin; + } + dma_memory_read(&dma_context_memory, dscr.addr, + &s->fifo_buffer[begin], s->data_count); + dscr.addr += s->data_count - begin; + if (s->data_count == block_size) { + for (n = 0; n < block_size; n++) { + sd_write_data(s->card, s->fifo_buffer[n]); + } + s->data_count = 0; + if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { + s->blkcnt--; + if (s->blkcnt == 0) { + break; + } + } + } + } + } + s->admasysaddr += dscr.incr; + break; + case SDHC_ADMA_ATTR_ACT_LINK: /* link to next descriptor table */ + s->admasysaddr = dscr.addr; + DPRINT_L1("ADMA link: admasysaddr=0x%lx\n", s->admasysaddr); + break; + default: + s->admasysaddr += dscr.incr; + break; + } + + /* ADMA transfer terminates if blkcnt == 0 or by END attribute */ + if (((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && + (s->blkcnt == 0)) || (dscr.attr & SDHC_ADMA_ATTR_END)) { + DPRINT_L2("ADMA transfer completed\n"); + if (length || ((dscr.attr & SDHC_ADMA_ATTR_END) && + (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && + s->blkcnt != 0)) { + ERRPRINT("SD/MMC host ADMA length mismatch\n"); + s->admaerr |= SDHC_ADMAERR_LENGTH_MISMATCH | + SDHC_ADMAERR_STATE_ST_TFR; + if (s->errintstsen & SDHC_EISEN_ADMAERR) { + ERRPRINT("Set ADMA error flag\n"); + s->errintsts |= SDHC_EIS_ADMAERR; + s->norintsts |= SDHC_NIS_ERR; + } + + sdhci_update_irq(s); + } + SDHCI_GET_CLASS(s)->end_data_transfer(s); + return; + } + + if (dscr.attr & SDHC_ADMA_ATTR_INT) { + DPRINT_L1("ADMA interrupt: admasysaddr=0x%lx\n", s->admasysaddr); + if (s->norintstsen & SDHC_NISEN_DMA) { + s->norintsts |= SDHC_NIS_DMA; + } + + sdhci_update_irq(s); + return; + } + } + + /* we have unfinished bussiness - reschedule to continue ADMA */ + qemu_mod_timer(s->transfer_timer, + qemu_get_clock_ns(vm_clock) + SDHC_TRANSFER_DELAY); +} + +/* Perform data transfer according to controller configuration */ + +static void sdhci_data_transfer(SDHCIState *s) +{ + SDHCIClass *k = SDHCI_GET_CLASS(s); + s->data_count = 0; + + if (s->trnmod & SDHC_TRNS_DMA) { + switch (SDHC_DMA_TYPE(s->hostctl)) { + case SDHC_CTRL_SDMA: + if ((s->trnmod & SDHC_TRNS_MULTI) && + (!(s->trnmod & SDHC_TRNS_BLK_CNT_EN) || s->blkcnt == 0)) { + break; + } + + if ((s->blkcnt == 1) || !(s->trnmod & SDHC_TRNS_MULTI)) { + k->do_sdma_single(s); + } else { + k->do_sdma_multi(s); + } + + break; + case SDHC_CTRL_ADMA1_32: + if (!(s->capareg & SDHC_CAN_DO_ADMA1)) { + ERRPRINT("ADMA1 not supported\n"); + break; + } + + k->do_adma(s); + break; + case SDHC_CTRL_ADMA2_32: + if (!(s->capareg & SDHC_CAN_DO_ADMA2)) { + ERRPRINT("ADMA2 not supported\n"); + break; + } + + k->do_adma(s); + break; + case SDHC_CTRL_ADMA2_64: + if (!(s->capareg & SDHC_CAN_DO_ADMA2) || + !(s->capareg & SDHC_64_BIT_BUS_SUPPORT)) { + ERRPRINT("64 bit ADMA not supported\n"); + break; + } + + k->do_adma(s); + break; + default: + ERRPRINT("Unsupported DMA type\n"); + break; + } + } else { + if ((s->trnmod & SDHC_TRNS_READ) && sd_data_ready(s->card)) { + s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | + SDHC_DAT_LINE_ACTIVE; + SDHCI_GET_CLASS(s)->read_block_from_card(s); + } else { + s->prnsts |= SDHC_DOING_WRITE | SDHC_DAT_LINE_ACTIVE | + SDHC_SPACE_AVAILABLE | SDHC_DATA_INHIBIT; + SDHCI_GET_CLASS(s)->write_block_to_card(s); + } + } +} + +static bool sdhci_can_issue_command(SDHCIState *s) +{ + if (!SDHC_CLOCK_IS_ON(s->clkcon) || !(s->pwrcon & SDHC_POWER_ON) || + (((s->prnsts & SDHC_DATA_INHIBIT) || s->stopped_state) && + ((s->cmdreg & SDHC_CMD_DATA_PRESENT) || + ((s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY && + !(SDHC_COMMAND_TYPE(s->cmdreg) == SDHC_CMD_ABORT))))) { + return false; + } + + return true; +} + +/* The Buffer Data Port register must be accessed in sequential and + * continuous manner */ +static inline bool +sdhci_buff_access_is_sequential(SDHCIState *s, unsigned byte_num) +{ + if ((s->data_count & 0x3) != byte_num) { + ERRPRINT("Non-sequential access to Buffer Data Port register" + "is prohibited\n"); + return false; + } + return true; +} + +static uint32_t sdhci_read(SDHCIState *s, unsigned int offset, unsigned size) +{ + uint32_t ret = 0; + + switch (offset & ~0x3) { + case SDHC_SYSAD: + ret = s->sdmasysad; + break; + case SDHC_BLKSIZE: + ret = s->blksize | (s->blkcnt << 16); + break; + case SDHC_ARGUMENT: + ret = s->argument; + break; + case SDHC_TRNMOD: + ret = s->trnmod | (s->cmdreg << 16); + break; + case SDHC_RSPREG0 ... SDHC_RSPREG3: + ret = s->rspreg[((offset & ~0x3) - SDHC_RSPREG0) >> 2]; + break; + case SDHC_BDATA: + if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { + ret = SDHCI_GET_CLASS(s)->bdata_read(s, size); + DPRINT_L2("read %ub: addr[0x%04x] -> %u\n", size, offset, ret); + return ret; + } + break; + case SDHC_PRNSTS: + ret = s->prnsts; + break; + case SDHC_HOSTCTL: + ret = s->hostctl | (s->pwrcon << 8) | (s->blkgap << 16) | + (s->wakcon << 24); + break; + case SDHC_CLKCON: + ret = s->clkcon | (s->timeoutcon << 16); + break; + case SDHC_NORINTSTS: + ret = s->norintsts | (s->errintsts << 16); + break; + case SDHC_NORINTSTSEN: + ret = s->norintstsen | (s->errintstsen << 16); + break; + case SDHC_NORINTSIGEN: + ret = s->norintsigen | (s->errintsigen << 16); + break; + case SDHC_ACMD12ERRSTS: + ret = s->acmd12errsts; + break; + case SDHC_CAPAREG: + ret = s->capareg; + break; + case SDHC_MAXCURR: + ret = s->maxcurr; + break; + case SDHC_ADMAERR: + ret = s->admaerr; + break; + case SDHC_ADMASYSADDR: + ret = (uint32_t)s->admasysaddr; + break; + case SDHC_ADMASYSADDR + 4: + ret = (uint32_t)(s->admasysaddr >> 32); + break; + case SDHC_SLOT_INT_STATUS: + ret = (SD_HOST_SPECv2_VERS << 16) | sdhci_slotint(s); + break; + default: + ERRPRINT("bad %ub read: addr[0x%04x]\n", size, offset); + break; + } + + ret >>= (offset & 0x3) * 8; + ret &= (1ULL << (size * 8)) - 1; + DPRINT_L2("read %ub: addr[0x%04x] -> %u(0x%x)\n", size, offset, ret, ret); + return ret; +} + +static inline void sdhci_blkgap_write(SDHCIState *s, uint8_t value) +{ + if ((value & SDHC_STOP_AT_GAP_REQ) && (s->blkgap & SDHC_STOP_AT_GAP_REQ)) { + return; + } + s->blkgap = value & SDHC_STOP_AT_GAP_REQ; + + if ((value & SDHC_CONTINUE_REQ) && s->stopped_state && + (s->blkgap & SDHC_STOP_AT_GAP_REQ) == 0) { + if (s->stopped_state == sdhc_gap_read) { + s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_READ; + SDHCI_GET_CLASS(s)->read_block_from_card(s); + } else { + s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_WRITE; + SDHCI_GET_CLASS(s)->write_block_to_card(s); + } + s->stopped_state = sdhc_not_stopped; + } else if (!s->stopped_state && (value & SDHC_STOP_AT_GAP_REQ)) { + if (s->prnsts & SDHC_DOING_READ) { + s->stopped_state = sdhc_gap_read; + } else if (s->prnsts & SDHC_DOING_WRITE) { + s->stopped_state = sdhc_gap_write; + } + } +} + +static inline void sdhci_reset_write(SDHCIState *s, uint8_t value) +{ + switch (value) { + case SDHC_RESET_ALL: + DEVICE_GET_CLASS(s)->reset(DEVICE(s)); + break; + case SDHC_RESET_CMD: + s->prnsts &= ~SDHC_CMD_INHIBIT; + s->norintsts &= ~SDHC_NIS_CMDCMP; + break; + case SDHC_RESET_DATA: + s->data_count = 0; + s->prnsts &= ~(SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE | + SDHC_DOING_READ | SDHC_DOING_WRITE | + SDHC_DATA_INHIBIT | SDHC_DAT_LINE_ACTIVE); + s->blkgap &= ~(SDHC_STOP_AT_GAP_REQ | SDHC_CONTINUE_REQ); + s->stopped_state = sdhc_not_stopped; + s->norintsts &= ~(SDHC_NIS_WBUFRDY | SDHC_NIS_RBUFRDY | + SDHC_NIS_DMA | SDHC_NIS_TRSCMP | SDHC_NIS_BLKGAP); + break; + } +} + +static void +sdhci_write(SDHCIState *s, unsigned int offset, uint32_t value, unsigned size) +{ + unsigned shift = 8 * (offset & 0x3); + uint32_t mask = ~(((1ULL << (size * 8)) - 1) << shift); + value <<= shift; + + switch (offset & ~0x3) { + case SDHC_SYSAD: + s->sdmasysad = (s->sdmasysad & mask) | value; + MASKED_WRITE(s->sdmasysad, mask, value); + /* Writing to last byte of sdmasysad might trigger transfer */ + if (!(mask & 0xFF000000) && TRANSFERRING_DATA(s->prnsts) && s->blkcnt && + s->blksize && SDHC_DMA_TYPE(s->hostctl) == SDHC_CTRL_SDMA) { + SDHCI_GET_CLASS(s)->do_sdma_multi(s); + } + break; + case SDHC_BLKSIZE: + if (!TRANSFERRING_DATA(s->prnsts)) { + MASKED_WRITE(s->blksize, mask, value); + MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16); + } + break; + case SDHC_ARGUMENT: + MASKED_WRITE(s->argument, mask, value); + break; + case SDHC_TRNMOD: + /* DMA can be enabled only if it is supported as indicated by + * capabilities register */ + if (!(s->capareg & SDHC_CAN_DO_DMA)) { + value &= ~SDHC_TRNS_DMA; + } + MASKED_WRITE(s->trnmod, mask, value); + MASKED_WRITE(s->cmdreg, mask >> 16, value >> 16); + + /* Writing to the upper byte of CMDREG triggers SD command generation */ + if ((mask & 0xFF000000) || !SDHCI_GET_CLASS(s)->can_issue_command(s)) { + break; + } + + SDHCI_GET_CLASS(s)->send_command(s); + break; + case SDHC_BDATA: + if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { + SDHCI_GET_CLASS(s)->bdata_write(s, value >> shift, size); + } + break; + case SDHC_HOSTCTL: + if (!(mask & 0xFF0000)) { + sdhci_blkgap_write(s, value >> 16); + } + MASKED_WRITE(s->hostctl, mask, value); + MASKED_WRITE(s->pwrcon, mask >> 8, value >> 8); + MASKED_WRITE(s->wakcon, mask >> 24, value >> 24); + if (!(s->prnsts & SDHC_CARD_PRESENT) || ((s->pwrcon >> 1) & 0x7) < 5 || + !(s->capareg & (1 << (31 - ((s->pwrcon >> 1) & 0x7))))) { + s->pwrcon &= ~SDHC_POWER_ON; + } + break; + case SDHC_CLKCON: + if (!(mask & 0xFF000000)) { + sdhci_reset_write(s, value >> 24); + } + MASKED_WRITE(s->clkcon, mask, value); + MASKED_WRITE(s->timeoutcon, mask >> 16, value >> 16); + if (s->clkcon & SDHC_CLOCK_INT_EN) { + s->clkcon |= SDHC_CLOCK_INT_STABLE; + } else { + s->clkcon &= ~SDHC_CLOCK_INT_STABLE; + } + break; + case SDHC_NORINTSTS: + if (s->norintstsen & SDHC_NISEN_CARDINT) { + value &= ~SDHC_NIS_CARDINT; + } + s->norintsts &= mask | ~value; + s->errintsts &= (mask >> 16) | ~(value >> 16); + if (s->errintsts) { + s->norintsts |= SDHC_NIS_ERR; + } else { + s->norintsts &= ~SDHC_NIS_ERR; + } + sdhci_update_irq(s); + break; + case SDHC_NORINTSTSEN: + MASKED_WRITE(s->norintstsen, mask, value); + MASKED_WRITE(s->errintstsen, mask >> 16, value >> 16); + s->norintsts &= s->norintstsen; + s->errintsts &= s->errintstsen; + if (s->errintsts) { + s->norintsts |= SDHC_NIS_ERR; + } else { + s->norintsts &= ~SDHC_NIS_ERR; + } + sdhci_update_irq(s); + break; + case SDHC_NORINTSIGEN: + MASKED_WRITE(s->norintsigen, mask, value); + MASKED_WRITE(s->errintsigen, mask >> 16, value >> 16); + sdhci_update_irq(s); + break; + case SDHC_ADMAERR: + MASKED_WRITE(s->admaerr, mask, value); + break; + case SDHC_ADMASYSADDR: + s->admasysaddr = (s->admasysaddr & (0xFFFFFFFF00000000ULL | + (uint64_t)mask)) | (uint64_t)value; + break; + case SDHC_ADMASYSADDR + 4: + s->admasysaddr = (s->admasysaddr & (0x00000000FFFFFFFFULL | + ((uint64_t)mask << 32))) | ((uint64_t)value << 32); + break; + case SDHC_FEAER: + s->acmd12errsts |= value; + s->errintsts |= (value >> 16) & s->errintstsen; + if (s->acmd12errsts) { + s->errintsts |= SDHC_EIS_CMD12ERR; + } + if (s->errintsts) { + s->norintsts |= SDHC_NIS_ERR; + } + sdhci_update_irq(s); + break; + default: + ERRPRINT("bad %ub write offset: addr[0x%04x] <- %u(0x%x)\n", + size, offset, value >> shift, value >> shift); + break; + } + DPRINT_L2("write %ub: addr[0x%04x] <- %u(0x%x)\n", + size, offset, value >> shift, value >> shift); +} + +static uint64_t +sdhci_readfn(void *opaque, hwaddr offset, unsigned size) +{ + SDHCIState *s = (SDHCIState *)opaque; + + return SDHCI_GET_CLASS(s)->mem_read(s, offset, size); +} + +static void +sdhci_writefn(void *opaque, hwaddr off, uint64_t val, unsigned sz) +{ + SDHCIState *s = (SDHCIState *)opaque; + + SDHCI_GET_CLASS(s)->mem_write(s, off, val, sz); +} + +static const MemoryRegionOps sdhci_mmio_ops = { + .read = sdhci_readfn, + .write = sdhci_writefn, + .valid = { + .min_access_size = 1, + .max_access_size = 4, + .unaligned = false + }, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static inline unsigned int sdhci_get_fifolen(SDHCIState *s) +{ + switch (SDHC_CAPAB_BLOCKSIZE(s->capareg)) { + case 0: + return 512; + case 1: + return 1024; + case 2: + return 2048; + default: + hw_error("SDHC: unsupported value for maximum block size\n"); + return 0; + } +} + +static void sdhci_initfn(Object *obj) +{ + SDHCIState *s = SDHCI(obj); + DriveInfo *di; + + di = drive_get_next(IF_SD); + s->card = sd_init(di ? di->bdrv : NULL, 0); + s->eject_cb = qemu_allocate_irqs(sdhci_insert_eject_cb, s, 1)[0]; + s->ro_cb = qemu_allocate_irqs(sdhci_card_readonly_cb, s, 1)[0]; + sd_set_cb(s->card, s->ro_cb, s->eject_cb); + + s->insert_timer = qemu_new_timer_ns(vm_clock, sdhci_raise_insertion_irq, s); + s->transfer_timer = qemu_new_timer_ns(vm_clock, sdhci_do_data_transfer, s); +} + +static void sdhci_uninitfn(Object *obj) +{ + SDHCIState *s = SDHCI(obj); + + qemu_del_timer(s->insert_timer); + qemu_free_timer(s->insert_timer); + qemu_del_timer(s->transfer_timer); + qemu_free_timer(s->transfer_timer); + qemu_free_irqs(&s->eject_cb); + qemu_free_irqs(&s->ro_cb); + + if (s->fifo_buffer) { + g_free(s->fifo_buffer); + s->fifo_buffer = NULL; + } +} + +const VMStateDescription sdhci_vmstate = { + .name = "sdhci", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32(sdmasysad, SDHCIState), + VMSTATE_UINT16(blksize, SDHCIState), + VMSTATE_UINT16(blkcnt, SDHCIState), + VMSTATE_UINT32(argument, SDHCIState), + VMSTATE_UINT16(trnmod, SDHCIState), + VMSTATE_UINT16(cmdreg, SDHCIState), + VMSTATE_UINT32_ARRAY(rspreg, SDHCIState, 4), + VMSTATE_UINT32(prnsts, SDHCIState), + VMSTATE_UINT8(hostctl, SDHCIState), + VMSTATE_UINT8(pwrcon, SDHCIState), + VMSTATE_UINT8(blkgap, SDHCIState), + VMSTATE_UINT8(wakcon, SDHCIState), + VMSTATE_UINT16(clkcon, SDHCIState), + VMSTATE_UINT8(timeoutcon, SDHCIState), + VMSTATE_UINT8(admaerr, SDHCIState), + VMSTATE_UINT16(norintsts, SDHCIState), + VMSTATE_UINT16(errintsts, SDHCIState), + VMSTATE_UINT16(norintstsen, SDHCIState), + VMSTATE_UINT16(errintstsen, SDHCIState), + VMSTATE_UINT16(norintsigen, SDHCIState), + VMSTATE_UINT16(errintsigen, SDHCIState), + VMSTATE_UINT16(acmd12errsts, SDHCIState), + VMSTATE_UINT16(data_count, SDHCIState), + VMSTATE_UINT64(admasysaddr, SDHCIState), + VMSTATE_UINT8(stopped_state, SDHCIState), + VMSTATE_VBUFFER_UINT32(fifo_buffer, SDHCIState, 1, NULL, 0, buf_maxsz), + VMSTATE_TIMER(insert_timer, SDHCIState), + VMSTATE_TIMER(transfer_timer, SDHCIState), + VMSTATE_END_OF_LIST() + } +}; + +/* Capabilities registers provide information on supported features of this + * specific host controller implementation */ +static Property sdhci_properties[] = { + DEFINE_PROP_HEX32("capareg", SDHCIState, capareg, + SDHC_CAPAB_REG_DEFAULT), + DEFINE_PROP_HEX32("maxcurr", SDHCIState, maxcurr, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void sdhci_realize(DeviceState *dev, Error ** errp) +{ + SDHCIState *s = SDHCI(dev); + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + + s->buf_maxsz = sdhci_get_fifolen(s); + s->fifo_buffer = g_malloc0(s->buf_maxsz); + sysbus_init_irq(sbd, &s->irq); + memory_region_init_io(&s->iomem, &sdhci_mmio_ops, s, "sdhci", + SDHC_REGISTERS_MAP_SIZE); + sysbus_init_mmio(sbd, &s->iomem); +} + +static void sdhci_generic_reset(DeviceState *ds) +{ + SDHCIState *s = SDHCI(ds); + SDHCI_GET_CLASS(s)->reset(s); +} + +static void sdhci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SDHCIClass *k = SDHCI_CLASS(klass); + + dc->vmsd = &sdhci_vmstate; + dc->props = sdhci_properties; + dc->reset = sdhci_generic_reset; + dc->realize = sdhci_realize; + + k->reset = sdhci_reset; + k->mem_read = sdhci_read; + k->mem_write = sdhci_write; + k->send_command = sdhci_send_command; + k->can_issue_command = sdhci_can_issue_command; + k->data_transfer = sdhci_data_transfer; + k->end_data_transfer = sdhci_end_transfer; + k->do_sdma_single = sdhci_sdma_transfer_single_block; + k->do_sdma_multi = sdhci_sdma_transfer_multi_blocks; + k->do_adma = sdhci_do_adma; + k->read_block_from_card = sdhci_read_block_from_card; + k->write_block_to_card = sdhci_write_block_to_card; + k->bdata_read = sdhci_read_dataport; + k->bdata_write = sdhci_write_dataport; +} + +static const TypeInfo sdhci_type_info = { + .name = TYPE_SDHCI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(SDHCIState), + .instance_init = sdhci_initfn, + .instance_finalize = sdhci_uninitfn, + .class_init = sdhci_class_init, + .class_size = sizeof(SDHCIClass) +}; + +static void sdhci_register_types(void) +{ + type_register_static(&sdhci_type_info); +} + +type_init(sdhci_register_types) diff --git a/hw/sdhci.h b/hw/sdhci.h new file mode 100644 index 0000000000..931d7406f0 --- /dev/null +++ b/hw/sdhci.h @@ -0,0 +1,312 @@ +/* + * SD Association Host Standard Specification v2.0 controller emulation + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * Mitsyanko Igor <i.mitsyanko@samsung.com> + * Peter A.G. Crosthwaite <peter.crosthwaite@petalogix.com> + * + * Based on MMC controller for Samsung S5PC1xx-based board emulation + * by Alexey Merkulov and Vladimir Monakhov. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef SDHCI_H +#define SDHCI_H + +#include "qemu-common.h" +#include "sysbus.h" +#include "sd.h" + +/* R/W SDMA System Address register 0x0 */ +#define SDHC_SYSAD 0x00 + +/* R/W Host DMA Buffer Boundary and Transfer Block Size Register 0x0 */ +#define SDHC_BLKSIZE 0x04 + +/* R/W Blocks count for current transfer 0x0 */ +#define SDHC_BLKCNT 0x06 + +/* R/W Command Argument Register 0x0 */ +#define SDHC_ARGUMENT 0x08 + +/* R/W Transfer Mode Setting Register 0x0 */ +#define SDHC_TRNMOD 0x0C +#define SDHC_TRNS_DMA 0x0001 +#define SDHC_TRNS_BLK_CNT_EN 0x0002 +#define SDHC_TRNS_ACMD12 0x0004 +#define SDHC_TRNS_READ 0x0010 +#define SDHC_TRNS_MULTI 0x0020 + +/* R/W Command Register 0x0 */ +#define SDHC_CMDREG 0x0E +#define SDHC_CMD_RSP_WITH_BUSY (3 << 0) +#define SDHC_CMD_DATA_PRESENT (1 << 5) +#define SDHC_CMD_SUSPEND (1 << 6) +#define SDHC_CMD_RESUME (1 << 7) +#define SDHC_CMD_ABORT ((1 << 6)|(1 << 7)) +#define SDHC_CMD_TYPE_MASK ((1 << 6)|(1 << 7)) +#define SDHC_COMMAND_TYPE(x) ((x) & SDHC_CMD_TYPE_MASK) + +/* ROC Response Register 0 0x0 */ +#define SDHC_RSPREG0 0x10 +/* ROC Response Register 1 0x0 */ +#define SDHC_RSPREG1 0x14 +/* ROC Response Register 2 0x0 */ +#define SDHC_RSPREG2 0x18 +/* ROC Response Register 3 0x0 */ +#define SDHC_RSPREG3 0x1C + +/* R/W Buffer Data Register 0x0 */ +#define SDHC_BDATA 0x20 + +/* R/ROC Present State Register 0x000A0000 */ +#define SDHC_PRNSTS 0x24 +#define SDHC_CMD_INHIBIT 0x00000001 +#define SDHC_DATA_INHIBIT 0x00000002 +#define SDHC_DAT_LINE_ACTIVE 0x00000004 +#define SDHC_DOING_WRITE 0x00000100 +#define SDHC_DOING_READ 0x00000200 +#define SDHC_SPACE_AVAILABLE 0x00000400 +#define SDHC_DATA_AVAILABLE 0x00000800 +#define SDHC_CARD_PRESENT 0x00010000 +#define SDHC_CARD_DETECT 0x00040000 +#define SDHC_WRITE_PROTECT 0x00080000 +#define TRANSFERRING_DATA(x) \ + ((x) & (SDHC_DOING_READ | SDHC_DOING_WRITE)) + +/* R/W Host control Register 0x0 */ +#define SDHC_HOSTCTL 0x28 +#define SDHC_CTRL_DMA_CHECK_MASK 0x18 +#define SDHC_CTRL_SDMA 0x00 +#define SDHC_CTRL_ADMA1_32 0x08 +#define SDHC_CTRL_ADMA2_32 0x10 +#define SDHC_CTRL_ADMA2_64 0x18 +#define SDHC_DMA_TYPE(x) ((x) & SDHC_CTRL_DMA_CHECK_MASK) + +/* R/W Power Control Register 0x0 */ +#define SDHC_PWRCON 0x29 +#define SDHC_POWER_ON (1 << 0) + +/* R/W Block Gap Control Register 0x0 */ +#define SDHC_BLKGAP 0x2A +#define SDHC_STOP_AT_GAP_REQ 0x01 +#define SDHC_CONTINUE_REQ 0x02 + +/* R/W WakeUp Control Register 0x0 */ +#define SDHC_WAKCON 0x2B +#define SDHC_WKUP_ON_INS (1 << 1) +#define SDHC_WKUP_ON_RMV (1 << 2) + +/* CLKCON */ +#define SDHC_CLKCON 0x2C +#define SDHC_CLOCK_INT_STABLE 0x0002 +#define SDHC_CLOCK_INT_EN 0x0001 +#define SDHC_CLOCK_SDCLK_EN (1 << 2) +#define SDHC_CLOCK_CHK_MASK 0x0007 +#define SDHC_CLOCK_IS_ON(x) \ + (((x) & SDHC_CLOCK_CHK_MASK) == SDHC_CLOCK_CHK_MASK) + +/* R/W Timeout Control Register 0x0 */ +#define SDHC_TIMEOUTCON 0x2E + +/* R/W Software Reset Register 0x0 */ +#define SDHC_SWRST 0x2F +#define SDHC_RESET_ALL 0x01 +#define SDHC_RESET_CMD 0x02 +#define SDHC_RESET_DATA 0x04 + +/* ROC/RW1C Normal Interrupt Status Register 0x0 */ +#define SDHC_NORINTSTS 0x30 +#define SDHC_NIS_ERR 0x8000 +#define SDHC_NIS_CMDCMP 0x0001 +#define SDHC_NIS_TRSCMP 0x0002 +#define SDHC_NIS_BLKGAP 0x0004 +#define SDHC_NIS_DMA 0x0008 +#define SDHC_NIS_WBUFRDY 0x0010 +#define SDHC_NIS_RBUFRDY 0x0020 +#define SDHC_NIS_INSERT 0x0040 +#define SDHC_NIS_REMOVE 0x0080 +#define SDHC_NIS_CARDINT 0x0100 + +/* ROC/RW1C Error Interrupt Status Register 0x0 */ +#define SDHC_ERRINTSTS 0x32 +#define SDHC_EIS_CMDTIMEOUT 0x0001 +#define SDHC_EIS_BLKGAP 0x0004 +#define SDHC_EIS_CMDIDX 0x0008 +#define SDHC_EIS_CMD12ERR 0x0100 +#define SDHC_EIS_ADMAERR 0x0200 + +/* R/W Normal Interrupt Status Enable Register 0x0 */ +#define SDHC_NORINTSTSEN 0x34 +#define SDHC_NISEN_CMDCMP 0x0001 +#define SDHC_NISEN_TRSCMP 0x0002 +#define SDHC_NISEN_DMA 0x0008 +#define SDHC_NISEN_WBUFRDY 0x0010 +#define SDHC_NISEN_RBUFRDY 0x0020 +#define SDHC_NISEN_INSERT 0x0040 +#define SDHC_NISEN_REMOVE 0x0080 +#define SDHC_NISEN_CARDINT 0x0100 + +/* R/W Error Interrupt Status Enable Register 0x0 */ +#define SDHC_ERRINTSTSEN 0x36 +#define SDHC_EISEN_CMDTIMEOUT 0x0001 +#define SDHC_EISEN_BLKGAP 0x0004 +#define SDHC_EISEN_CMDIDX 0x0008 +#define SDHC_EISEN_ADMAERR 0x0200 + +/* R/W Normal Interrupt Signal Enable Register 0x0 */ +#define SDHC_NORINTSIGEN 0x38 +#define SDHC_NORINTSIG_INSERT (1 << 6) +#define SDHC_NORINTSIG_REMOVE (1 << 7) + +/* R/W Error Interrupt Signal Enable Register 0x0 */ +#define SDHC_ERRINTSIGEN 0x3A + +/* ROC Auto CMD12 error status register 0x0 */ +#define SDHC_ACMD12ERRSTS 0x3C + +/* HWInit Capabilities Register 0x05E80080 */ +#define SDHC_CAPAREG 0x40 +#define SDHC_CAN_DO_DMA 0x00400000 +#define SDHC_CAN_DO_ADMA2 0x00080000 +#define SDHC_CAN_DO_ADMA1 0x00100000 +#define SDHC_64_BIT_BUS_SUPPORT (1 << 28) +#define SDHC_CAPAB_BLOCKSIZE(x) (((x) >> 16) & 0x3) + +/* HWInit Maximum Current Capabilities Register 0x0 */ +#define SDHC_MAXCURR 0x48 + +/* W Force Event Auto CMD12 Error Interrupt Register 0x0000 */ +#define SDHC_FEAER 0x50 +/* W Force Event Error Interrupt Register Error Interrupt 0x0000 */ +#define SDHC_FEERR 0x52 + +/* R/W ADMA Error Status Register 0x00 */ +#define SDHC_ADMAERR 0x54 +#define SDHC_ADMAERR_LENGTH_MISMATCH (1 << 2) +#define SDHC_ADMAERR_STATE_ST_STOP (0 << 0) +#define SDHC_ADMAERR_STATE_ST_FDS (1 << 0) +#define SDHC_ADMAERR_STATE_ST_TFR (3 << 0) +#define SDHC_ADMAERR_STATE_MASK (3 << 0) + +/* R/W ADMA System Address Register 0x00 */ +#define SDHC_ADMASYSADDR 0x58 +#define SDHC_ADMA_ATTR_SET_LEN (1 << 4) +#define SDHC_ADMA_ATTR_ACT_TRAN (1 << 5) +#define SDHC_ADMA_ATTR_ACT_LINK (3 << 4) +#define SDHC_ADMA_ATTR_INT (1 << 2) +#define SDHC_ADMA_ATTR_END (1 << 1) +#define SDHC_ADMA_ATTR_VALID (1 << 0) +#define SDHC_ADMA_ATTR_ACT_MASK ((1 << 4)|(1 << 5)) + +/* Slot interrupt status */ +#define SDHC_SLOT_INT_STATUS 0xFC + +/* HWInit Host Controller Version Register 0x0401 */ +#define SDHC_HCVER 0xFE +#define SD_HOST_SPECv2_VERS 0x2401 + +#define SDHC_REGISTERS_MAP_SIZE 0x100 +#define SDHC_INSERTION_DELAY (get_ticks_per_sec()) +#define SDHC_TRANSFER_DELAY 100 +#define SDHC_ADMA_DESCS_PER_DELAY 5 +#define SDHC_CMD_RESPONSE (3 << 0) + +enum { + sdhc_not_stopped = 0, /* normal SDHC state */ + sdhc_gap_read = 1, /* SDHC stopped at block gap during read operation */ + sdhc_gap_write = 2 /* SDHC stopped at block gap during write operation */ +}; + +/* SD/MMC host controller state */ +typedef struct SDHCIState { + SysBusDevice busdev; + SDState *card; + MemoryRegion iomem; + + QEMUTimer *insert_timer; /* timer for 'changing' sd card. */ + QEMUTimer *transfer_timer; + qemu_irq eject_cb; + qemu_irq ro_cb; + qemu_irq irq; + + uint32_t sdmasysad; /* SDMA System Address register */ + uint16_t blksize; /* Host DMA Buff Boundary and Transfer BlkSize Reg */ + uint16_t blkcnt; /* Blocks count for current transfer */ + uint32_t argument; /* Command Argument Register */ + uint16_t trnmod; /* Transfer Mode Setting Register */ + uint16_t cmdreg; /* Command Register */ + uint32_t rspreg[4]; /* Response Registers 0-3 */ + uint32_t prnsts; /* Present State Register */ + uint8_t hostctl; /* Host Control Register */ + uint8_t pwrcon; /* Power control Register */ + uint8_t blkgap; /* Block Gap Control Register */ + uint8_t wakcon; /* WakeUp Control Register */ + uint16_t clkcon; /* Clock control Register */ + uint8_t timeoutcon; /* Timeout Control Register */ + uint8_t admaerr; /* ADMA Error Status Register */ + uint16_t norintsts; /* Normal Interrupt Status Register */ + uint16_t errintsts; /* Error Interrupt Status Register */ + uint16_t norintstsen; /* Normal Interrupt Status Enable Register */ + uint16_t errintstsen; /* Error Interrupt Status Enable Register */ + uint16_t norintsigen; /* Normal Interrupt Signal Enable Register */ + uint16_t errintsigen; /* Error Interrupt Signal Enable Register */ + uint16_t acmd12errsts; /* Auto CMD12 error status register */ + uint64_t admasysaddr; /* ADMA System Address Register */ + + uint32_t capareg; /* Capabilities Register */ + uint32_t maxcurr; /* Maximum Current Capabilities Register */ + uint8_t *fifo_buffer; /* SD host i/o FIFO buffer */ + uint32_t buf_maxsz; + uint16_t data_count; /* current element in FIFO buffer */ + uint8_t stopped_state;/* Current SDHC state */ + /* Buffer Data Port Register - virtual access point to R and W buffers */ + /* Software Reset Register - always reads as 0 */ + /* Force Event Auto CMD12 Error Interrupt Reg - write only */ + /* Force Event Error Interrupt Register- write only */ + /* RO Host Controller Version Register always reads as 0x2401 */ +} SDHCIState; + +typedef struct SDHCIClass { + SysBusDeviceClass busdev_class; + + void (*reset)(SDHCIState *s); + uint32_t (*mem_read)(SDHCIState *s, unsigned int offset, unsigned size); + void (*mem_write)(SDHCIState *s, unsigned int offset, uint32_t value, + unsigned size); + void (*send_command)(SDHCIState *s); + bool (*can_issue_command)(SDHCIState *s); + void (*data_transfer)(SDHCIState *s); + void (*end_data_transfer)(SDHCIState *s); + void (*do_sdma_single)(SDHCIState *s); + void (*do_sdma_multi)(SDHCIState *s); + void (*do_adma)(SDHCIState *s); + void (*read_block_from_card)(SDHCIState *s); + void (*write_block_to_card)(SDHCIState *s); + uint32_t (*bdata_read)(SDHCIState *s, unsigned size); + void (*bdata_write)(SDHCIState *s, uint32_t value, unsigned size); +} SDHCIClass; + +extern const VMStateDescription sdhci_vmstate; + +#define TYPE_SDHCI "generic-sdhci" +#define SDHCI(obj) \ + OBJECT_CHECK(SDHCIState, (obj), TYPE_SDHCI) +#define SDHCI_CLASS(klass) \ + OBJECT_CLASS_CHECK(SDHCIClass, (klass), TYPE_SDHCI) +#define SDHCI_GET_CLASS(obj) \ + OBJECT_GET_CLASS(SDHCIClass, (obj), TYPE_SDHCI) + +#endif /* SDHCI_H */ |