| /* |
| * 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 "qemu/osdep.h" |
| #include "qemu/units.h" |
| #include "qemu/error-report.h" |
| #include "qapi/error.h" |
| #include "hw/irq.h" |
| #include "hw/qdev-properties.h" |
| #include "sysemu/dma.h" |
| #include "qemu/timer.h" |
| #include "qemu/bitops.h" |
| #include "hw/sd/sdhci.h" |
| #include "migration/vmstate.h" |
| #include "sdhci-internal.h" |
| #include "qemu/log.h" |
| #include "qemu/module.h" |
| #include "trace.h" |
| |
| #define TYPE_SDHCI_BUS "sdhci-bus" |
| #define SDHCI_BUS(obj) OBJECT_CHECK(SDBus, (obj), TYPE_SDHCI_BUS) |
| |
| #define MASKED_WRITE(reg, mask, val) (reg = (reg & (mask)) | (val)) |
| |
| static inline unsigned int sdhci_get_fifolen(SDHCIState *s) |
| { |
| return 1 << (9 + FIELD_EX32(s->capareg, SDHC_CAPAB, MAXBLOCKLENGTH)); |
| } |
| |
| /* return true on error */ |
| static bool sdhci_check_capab_freq_range(SDHCIState *s, const char *desc, |
| uint8_t freq, Error **errp) |
| { |
| if (s->sd_spec_version >= 3) { |
| return false; |
| } |
| switch (freq) { |
| case 0: |
| case 10 ... 63: |
| break; |
| default: |
| error_setg(errp, "SD %s clock frequency can have value" |
| "in range 0-63 only", desc); |
| return true; |
| } |
| return false; |
| } |
| |
| static void sdhci_check_capareg(SDHCIState *s, Error **errp) |
| { |
| uint64_t msk = s->capareg; |
| uint32_t val; |
| bool y; |
| |
| switch (s->sd_spec_version) { |
| case 4: |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, BUS64BIT_V4); |
| trace_sdhci_capareg("64-bit system bus (v4)", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, BUS64BIT_V4, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, UHS_II); |
| trace_sdhci_capareg("UHS-II", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, UHS_II, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, ADMA3); |
| trace_sdhci_capareg("ADMA3", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, ADMA3, 0); |
| |
| /* fallthrough */ |
| case 3: |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, ASYNC_INT); |
| trace_sdhci_capareg("async interrupt", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, ASYNC_INT, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, SLOT_TYPE); |
| if (val) { |
| error_setg(errp, "slot-type not supported"); |
| return; |
| } |
| trace_sdhci_capareg("slot type", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, SLOT_TYPE, 0); |
| |
| if (val != 2) { |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, EMBEDDED_8BIT); |
| trace_sdhci_capareg("8-bit bus", val); |
| } |
| msk = FIELD_DP64(msk, SDHC_CAPAB, EMBEDDED_8BIT, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, BUS_SPEED); |
| trace_sdhci_capareg("bus speed mask", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, BUS_SPEED, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, DRIVER_STRENGTH); |
| trace_sdhci_capareg("driver strength mask", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, DRIVER_STRENGTH, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, TIMER_RETUNING); |
| trace_sdhci_capareg("timer re-tuning", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, TIMER_RETUNING, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, SDR50_TUNING); |
| trace_sdhci_capareg("use SDR50 tuning", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, SDR50_TUNING, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, RETUNING_MODE); |
| trace_sdhci_capareg("re-tuning mode", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, RETUNING_MODE, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, CLOCK_MULT); |
| trace_sdhci_capareg("clock multiplier", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, CLOCK_MULT, 0); |
| |
| /* fallthrough */ |
| case 2: /* default version */ |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, ADMA2); |
| trace_sdhci_capareg("ADMA2", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, ADMA2, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, ADMA1); |
| trace_sdhci_capareg("ADMA1", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, ADMA1, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, BUS64BIT); |
| trace_sdhci_capareg("64-bit system bus (v3)", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, BUS64BIT, 0); |
| |
| /* fallthrough */ |
| case 1: |
| y = FIELD_EX64(s->capareg, SDHC_CAPAB, TOUNIT); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, TOUNIT, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, TOCLKFREQ); |
| trace_sdhci_capareg(y ? "timeout (MHz)" : "Timeout (KHz)", val); |
| if (sdhci_check_capab_freq_range(s, "timeout", val, errp)) { |
| return; |
| } |
| msk = FIELD_DP64(msk, SDHC_CAPAB, TOCLKFREQ, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, BASECLKFREQ); |
| trace_sdhci_capareg(y ? "base (MHz)" : "Base (KHz)", val); |
| if (sdhci_check_capab_freq_range(s, "base", val, errp)) { |
| return; |
| } |
| msk = FIELD_DP64(msk, SDHC_CAPAB, BASECLKFREQ, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, MAXBLOCKLENGTH); |
| if (val >= 3) { |
| error_setg(errp, "block size can be 512, 1024 or 2048 only"); |
| return; |
| } |
| trace_sdhci_capareg("max block length", sdhci_get_fifolen(s)); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, MAXBLOCKLENGTH, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, HIGHSPEED); |
| trace_sdhci_capareg("high speed", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, HIGHSPEED, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, SDMA); |
| trace_sdhci_capareg("SDMA", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, SDMA, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, SUSPRESUME); |
| trace_sdhci_capareg("suspend/resume", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, SUSPRESUME, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, V33); |
| trace_sdhci_capareg("3.3v", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, V33, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, V30); |
| trace_sdhci_capareg("3.0v", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, V30, 0); |
| |
| val = FIELD_EX64(s->capareg, SDHC_CAPAB, V18); |
| trace_sdhci_capareg("1.8v", val); |
| msk = FIELD_DP64(msk, SDHC_CAPAB, V18, 0); |
| break; |
| |
| default: |
| error_setg(errp, "Unsupported spec version: %u", s->sd_spec_version); |
| } |
| if (msk) { |
| qemu_log_mask(LOG_UNIMP, |
| "SDHCI: unknown CAPAB mask: 0x%016" PRIx64 "\n", msk); |
| } |
| } |
| |
| 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) { |
| timer_mod(s->insert_timer, |
| qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 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_set_inserted(DeviceState *dev, bool level) |
| { |
| SDHCIState *s = (SDHCIState *)dev; |
| |
| trace_sdhci_set_inserted(level ? "insert" : "eject"); |
| if ((s->norintsts & SDHC_NIS_REMOVE) && level) { |
| /* Give target some time to notice card ejection */ |
| timer_mod(s->insert_timer, |
| qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 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_set_readonly(DeviceState *dev, bool level) |
| { |
| SDHCIState *s = (SDHCIState *)dev; |
| |
| if (level) { |
| s->prnsts &= ~SDHC_WRITE_PROTECT; |
| } else { |
| /* Write enabled */ |
| s->prnsts |= SDHC_WRITE_PROTECT; |
| } |
| } |
| |
| static void sdhci_reset(SDHCIState *s) |
| { |
| DeviceState *dev = DEVICE(s); |
| |
| timer_del(s->insert_timer); |
| timer_del(s->transfer_timer); |
| |
| /* Set all registers to 0. Capabilities/Version 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); |
| |
| /* Reset other state based on current card insertion/readonly status */ |
| sdhci_set_inserted(dev, sdbus_get_inserted(&s->sdbus)); |
| sdhci_set_readonly(dev, sdbus_get_readonly(&s->sdbus)); |
| |
| s->data_count = 0; |
| s->stopped_state = sdhc_not_stopped; |
| s->pending_insert_state = false; |
| } |
| |
| static void sdhci_poweron_reset(DeviceState *dev) |
| { |
| /* QOM (ie power-on) reset. This is identical to reset |
| * commanded via device register apart from handling of the |
| * 'pending insert on powerup' quirk. |
| */ |
| SDHCIState *s = (SDHCIState *)dev; |
| |
| sdhci_reset(s); |
| |
| if (s->pending_insert_quirk) { |
| s->pending_insert_state = true; |
| } |
| } |
| |
| static void sdhci_data_transfer(void *opaque); |
| |
| 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; |
| |
| trace_sdhci_send_command(request.cmd, request.arg); |
| rlen = sdbus_do_command(&s->sdbus, &request, response); |
| |
| if (s->cmdreg & SDHC_CMD_RESPONSE) { |
| if (rlen == 4) { |
| s->rspreg[0] = ldl_be_p(response); |
| s->rspreg[1] = s->rspreg[2] = s->rspreg[3] = 0; |
| trace_sdhci_response4(s->rspreg[0]); |
| } else if (rlen == 16) { |
| s->rspreg[0] = ldl_be_p(&response[11]); |
| s->rspreg[1] = ldl_be_p(&response[7]); |
| s->rspreg[2] = ldl_be_p(&response[3]); |
| s->rspreg[3] = (response[0] << 16) | (response[1] << 8) | |
| response[2]; |
| trace_sdhci_response16(s->rspreg[3], s->rspreg[2], |
| s->rspreg[1], s->rspreg[0]); |
| } else { |
| trace_sdhci_error("timeout waiting for command response"); |
| if (s->errintstsen & SDHC_EISEN_CMDTIMEOUT) { |
| s->errintsts |= SDHC_EIS_CMDTIMEOUT; |
| s->norintsts |= SDHC_NIS_ERR; |
| } |
| } |
| |
| if (!(s->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) && |
| (s->norintstsen & SDHC_NISEN_TRSCMP) && |
| (s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY) { |
| s->norintsts |= SDHC_NIS_TRSCMP; |
| } |
| } |
| |
| if (s->norintstsen & SDHC_NISEN_CMDCMP) { |
| s->norintsts |= SDHC_NIS_CMDCMP; |
| } |
| |
| sdhci_update_irq(s); |
| |
| if (s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) { |
| s->data_count = 0; |
| sdhci_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; |
| trace_sdhci_end_transfer(request.cmd, request.arg); |
| sdbus_do_command(&s->sdbus, &request, response); |
| /* Auto CMD12 response goes to the upper Response register */ |
| s->rspreg[3] = ldl_be_p(response); |
| } |
| |
| 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 |
| */ |
| #define BLOCK_SIZE_MASK (4 * KiB - 1) |
| |
| /* 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; |
| uint8_t data; |
| const uint16_t blk_size = s->blksize & BLOCK_SIZE_MASK; |
| |
| if ((s->trnmod & SDHC_TRNS_MULTI) && |
| (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) { |
| return; |
| } |
| |
| for (index = 0; index < blk_size; index++) { |
| data = sdbus_read_data(&s->sdbus); |
| if (!FIELD_EX32(s->hostctl2, SDHC_HOSTCTL2, EXECUTE_TUNING)) { |
| /* Device is not in tuning */ |
| s->fifo_buffer[index] = data; |
| } |
| } |
| |
| if (FIELD_EX32(s->hostctl2, SDHC_HOSTCTL2, EXECUTE_TUNING)) { |
| /* Device is in tuning */ |
| s->hostctl2 &= ~R_SDHC_HOSTCTL2_EXECUTE_TUNING_MASK; |
| s->hostctl2 |= R_SDHC_HOSTCTL2_SAMPLING_CLKSEL_MASK; |
| s->prnsts &= ~(SDHC_DAT_LINE_ACTIVE | SDHC_DOING_READ | |
| SDHC_DATA_INHIBIT); |
| goto read_done; |
| } |
| |
| /* 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; |
| } |
| } |
| |
| read_done: |
| 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) { |
| trace_sdhci_error("read from empty buffer"); |
| 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 & BLOCK_SIZE_MASK)) { |
| trace_sdhci_read_dataport(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_end_transfer(s); |
| } else { /* if there are more data, read next block from card */ |
| sdhci_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 & BLOCK_SIZE_MASK); index++) { |
| sdbus_write_data(&s->sdbus, s->fifo_buffer[index]); |
| } |
| |
| /* Next data can be written through BUFFER DATORT register */ |
| s->prnsts |= SDHC_SPACE_AVAILABLE; |
| |
| /* 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_end_transfer(s); |
| } else if (s->norintstsen & SDHC_NISEN_WBUFRDY) { |
| s->norintsts |= SDHC_NIS_WBUFRDY; |
| } |
| |
| /* 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_end_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)) { |
| trace_sdhci_error("Can't write to data buffer: buffer full"); |
| 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 & BLOCK_SIZE_MASK)) { |
| trace_sdhci_write_dataport(s->data_count); |
| s->data_count = 0; |
| s->prnsts &= ~SDHC_SPACE_AVAILABLE; |
| if (s->prnsts & SDHC_DOING_WRITE) { |
| sdhci_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 & BLOCK_SIZE_MASK; |
| uint32_t boundary_chk = 1 << (((s->blksize & ~BLOCK_SIZE_MASK) >> 12) + 12); |
| uint32_t boundary_count = boundary_chk - (s->sdmasysad % boundary_chk); |
| |
| if (!(s->trnmod & SDHC_TRNS_BLK_CNT_EN) || !s->blkcnt) { |
| qemu_log_mask(LOG_UNIMP, "infinite transfer is not supported\n"); |
| return; |
| } |
| |
| /* 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] = sdbus_read_data(&s->sdbus); |
| } |
| } |
| 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(s->dma_as, 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(s->dma_as, s->sdmasysad, |
| &s->fifo_buffer[begin], s->data_count - begin); |
| s->sdmasysad += s->data_count - begin; |
| if (s->data_count == block_size) { |
| for (n = 0; n < block_size; n++) { |
| sdbus_write_data(&s->sdbus, 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_end_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 & BLOCK_SIZE_MASK; |
| |
| if (s->trnmod & SDHC_TRNS_READ) { |
| for (n = 0; n < datacnt; n++) { |
| s->fifo_buffer[n] = sdbus_read_data(&s->sdbus); |
| } |
| dma_memory_write(s->dma_as, s->sdmasysad, s->fifo_buffer, datacnt); |
| } else { |
| dma_memory_read(s->dma_as, s->sdmasysad, s->fifo_buffer, datacnt); |
| for (n = 0; n < datacnt; n++) { |
| sdbus_write_data(&s->sdbus, s->fifo_buffer[n]); |
| } |
| } |
| s->blkcnt--; |
| |
| sdhci_end_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->hostctl1)) { |
| case SDHC_CTRL_ADMA2_32: |
| dma_memory_read(s->dma_as, entry_addr, &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(s->dma_as, entry_addr, &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 = 4 * KiB; |
| } |
| break; |
| case SDHC_CTRL_ADMA2_64: |
| dma_memory_read(s->dma_as, entry_addr, &dscr->attr, 1); |
| dma_memory_read(s->dma_as, entry_addr + 2, &dscr->length, 2); |
| dscr->length = le16_to_cpu(dscr->length); |
| dma_memory_read(s->dma_as, entry_addr + 4, &dscr->addr, 8); |
| dscr->addr = le64_to_cpu(dscr->addr); |
| dscr->attr &= (uint8_t) ~0xC0; |
| 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 & BLOCK_SIZE_MASK; |
| 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); |
| trace_sdhci_adma_loop(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 : 64 * KiB; |
| |
| 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] = sdbus_read_data(&s->sdbus); |
| } |
| } |
| 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(s->dma_as, 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(s->dma_as, dscr.addr, |
| &s->fifo_buffer[begin], |
| s->data_count - begin); |
| dscr.addr += s->data_count - begin; |
| if (s->data_count == block_size) { |
| for (n = 0; n < block_size; n++) { |
| sdbus_write_data(&s->sdbus, 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; |
| trace_sdhci_adma("link", s->admasysaddr); |
| break; |
| default: |
| s->admasysaddr += dscr.incr; |
| break; |
| } |
| |
| if (dscr.attr & SDHC_ADMA_ATTR_INT) { |
| trace_sdhci_adma("interrupt", s->admasysaddr); |
| if (s->norintstsen & SDHC_NISEN_DMA) { |
| s->norintsts |= SDHC_NIS_DMA; |
| } |
| |
| sdhci_update_irq(s); |
| } |
| |
| /* 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)) { |
| trace_sdhci_adma_transfer_completed(); |
| if (length || ((dscr.attr & SDHC_ADMA_ATTR_END) && |
| (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && |
| s->blkcnt != 0)) { |
| trace_sdhci_error("SD/MMC host ADMA length mismatch"); |
| s->admaerr |= SDHC_ADMAERR_LENGTH_MISMATCH | |
| SDHC_ADMAERR_STATE_ST_TFR; |
| if (s->errintstsen & SDHC_EISEN_ADMAERR) { |
| trace_sdhci_error("Set ADMA error flag"); |
| s->errintsts |= SDHC_EIS_ADMAERR; |
| s->norintsts |= SDHC_NIS_ERR; |
| } |
| |
| sdhci_update_irq(s); |
| } |
| sdhci_end_transfer(s); |
| return; |
| } |
| |
| } |
| |
| /* we have unfinished business - reschedule to continue ADMA */ |
| timer_mod(s->transfer_timer, |
| qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_TRANSFER_DELAY); |
| } |
| |
| /* Perform data transfer according to controller configuration */ |
| |
| static void sdhci_data_transfer(void *opaque) |
| { |
| SDHCIState *s = (SDHCIState *)opaque; |
| |
| if (s->trnmod & SDHC_TRNS_DMA) { |
| switch (SDHC_DMA_TYPE(s->hostctl1)) { |
| case SDHC_CTRL_SDMA: |
| if ((s->blkcnt == 1) || !(s->trnmod & SDHC_TRNS_MULTI)) { |
| sdhci_sdma_transfer_single_block(s); |
| } else { |
| sdhci_sdma_transfer_multi_blocks(s); |
| } |
| |
| break; |
| case SDHC_CTRL_ADMA1_32: |
| if (!(s->capareg & R_SDHC_CAPAB_ADMA1_MASK)) { |
| trace_sdhci_error("ADMA1 not supported"); |
| break; |
| } |
| |
| sdhci_do_adma(s); |
| break; |
| case SDHC_CTRL_ADMA2_32: |
| if (!(s->capareg & R_SDHC_CAPAB_ADMA2_MASK)) { |
| trace_sdhci_error("ADMA2 not supported"); |
| break; |
| } |
| |
| sdhci_do_adma(s); |
| break; |
| case SDHC_CTRL_ADMA2_64: |
| if (!(s->capareg & R_SDHC_CAPAB_ADMA2_MASK) || |
| !(s->capareg & R_SDHC_CAPAB_BUS64BIT_MASK)) { |
| trace_sdhci_error("64 bit ADMA not supported"); |
| break; |
| } |
| |
| sdhci_do_adma(s); |
| break; |
| default: |
| trace_sdhci_error("Unsupported DMA type"); |
| break; |
| } |
| } else { |
| if ((s->trnmod & SDHC_TRNS_READ) && sdbus_data_ready(&s->sdbus)) { |
| s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | |
| SDHC_DAT_LINE_ACTIVE; |
| sdhci_read_block_from_card(s); |
| } else { |
| s->prnsts |= SDHC_DOING_WRITE | SDHC_DAT_LINE_ACTIVE | |
| SDHC_SPACE_AVAILABLE | SDHC_DATA_INHIBIT; |
| sdhci_write_block_to_card(s); |
| } |
| } |
| } |
| |
| static bool sdhci_can_issue_command(SDHCIState *s) |
| { |
| if (!SDHC_CLOCK_IS_ON(s->clkcon) || |
| (((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) { |
| trace_sdhci_error("Non-sequential access to Buffer Data Port register" |
| "is prohibited\n"); |
| return false; |
| } |
| return true; |
| } |
| |
| static uint64_t sdhci_read(void *opaque, hwaddr offset, unsigned size) |
| { |
| SDHCIState *s = (SDHCIState *)opaque; |
| 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_read_dataport(s, size); |
| trace_sdhci_access("rd", size << 3, offset, "->", ret, ret); |
| return ret; |
| } |
| break; |
| case SDHC_PRNSTS: |
| ret = s->prnsts; |
| ret = FIELD_DP32(ret, SDHC_PRNSTS, DAT_LVL, |
| sdbus_get_dat_lines(&s->sdbus)); |
| ret = FIELD_DP32(ret, SDHC_PRNSTS, CMD_LVL, |
| sdbus_get_cmd_line(&s->sdbus)); |
| break; |
| case SDHC_HOSTCTL: |
| ret = s->hostctl1 | (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 | (s->hostctl2 << 16); |
| break; |
| case SDHC_CAPAB: |
| ret = (uint32_t)s->capareg; |
| break; |
| case SDHC_CAPAB + 4: |
| ret = (uint32_t)(s->capareg >> 32); |
| break; |
| case SDHC_MAXCURR: |
| ret = (uint32_t)s->maxcurr; |
| break; |
| case SDHC_MAXCURR + 4: |
| ret = (uint32_t)(s->maxcurr >> 32); |
| 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 = (s->version << 16) | sdhci_slotint(s); |
| break; |
| default: |
| qemu_log_mask(LOG_UNIMP, "SDHC rd_%ub @0x%02" HWADDR_PRIx " " |
| "not implemented\n", size, offset); |
| break; |
| } |
| |
| ret >>= (offset & 0x3) * 8; |
| ret &= (1ULL << (size * 8)) - 1; |
| trace_sdhci_access("rd", size << 3, 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_read_block_from_card(s); |
| } else { |
| s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_WRITE; |
| sdhci_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: |
| sdhci_reset(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(void *opaque, hwaddr offset, uint64_t val, unsigned size) |
| { |
| SDHCIState *s = (SDHCIState *)opaque; |
| unsigned shift = 8 * (offset & 0x3); |
| uint32_t mask = ~(((1ULL << (size * 8)) - 1) << shift); |
| uint32_t value = val; |
| 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->hostctl1) == SDHC_CTRL_SDMA) { |
| if (s->trnmod & SDHC_TRNS_MULTI) { |
| sdhci_sdma_transfer_multi_blocks(s); |
| } else { |
| sdhci_sdma_transfer_single_block(s); |
| } |
| } |
| break; |
| case SDHC_BLKSIZE: |
| if (!TRANSFERRING_DATA(s->prnsts)) { |
| MASKED_WRITE(s->blksize, mask, value); |
| MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16); |
| } |
| |
| /* Limit block size to the maximum buffer size */ |
| if (extract32(s->blksize, 0, 12) > s->buf_maxsz) { |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: Size 0x%x is larger than " |
| "the maximum buffer 0x%x", __func__, s->blksize, |
| s->buf_maxsz); |
| |
| s->blksize = deposit32(s->blksize, 0, 12, s->buf_maxsz); |
| } |
| |
| 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 & R_SDHC_CAPAB_SDMA_MASK)) { |
| value &= ~SDHC_TRNS_DMA; |
| } |
| MASKED_WRITE(s->trnmod, mask, value & SDHC_TRNMOD_MASK); |
| MASKED_WRITE(s->cmdreg, mask >> 16, value >> 16); |
| |
| /* Writing to the upper byte of CMDREG triggers SD command generation */ |
| if ((mask & 0xFF000000) || !sdhci_can_issue_command(s)) { |
| break; |
| } |
| |
| sdhci_send_command(s); |
| break; |
| case SDHC_BDATA: |
| if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { |
| sdhci_write_dataport(s, value >> shift, size); |
| } |
| break; |
| case SDHC_HOSTCTL: |
| if (!(mask & 0xFF0000)) { |
| sdhci_blkgap_write(s, value >> 16); |
| } |
| MASKED_WRITE(s->hostctl1, 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; |
| } |
| /* Quirk for Raspberry Pi: pending card insert interrupt |
| * appears when first enabled after power on */ |
| if ((s->norintstsen & SDHC_NISEN_INSERT) && s->pending_insert_state) { |
| assert(s->pending_insert_quirk); |
| s->norintsts |= SDHC_NIS_INSERT; |
| s->pending_insert_state = false; |
| } |
| 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; |
| case SDHC_ACMD12ERRSTS: |
| MASKED_WRITE(s->acmd12errsts, mask, value & UINT16_MAX); |
| if (s->uhs_mode >= UHS_I) { |
| MASKED_WRITE(s->hostctl2, mask >> 16, value >> 16); |
| |
| if (FIELD_EX32(s->hostctl2, SDHC_HOSTCTL2, V18_ENA)) { |
| sdbus_set_voltage(&s->sdbus, SD_VOLTAGE_1_8V); |
| } else { |
| sdbus_set_voltage(&s->sdbus, SD_VOLTAGE_3_3V); |
| } |
| } |
| break; |
| |
| case SDHC_CAPAB: |
| case SDHC_CAPAB + 4: |
| case SDHC_MAXCURR: |
| case SDHC_MAXCURR + 4: |
| qemu_log_mask(LOG_GUEST_ERROR, "SDHC wr_%ub @0x%02" HWADDR_PRIx |
| " <- 0x%08x read-only\n", size, offset, value >> shift); |
| break; |
| |
| default: |
| qemu_log_mask(LOG_UNIMP, "SDHC wr_%ub @0x%02" HWADDR_PRIx " <- 0x%08x " |
| "not implemented\n", size, offset, value >> shift); |
| break; |
| } |
| trace_sdhci_access("wr", size << 3, offset, "<-", |
| value >> shift, value >> shift); |
| } |
| |
| static const MemoryRegionOps sdhci_mmio_ops = { |
| .read = sdhci_read, |
| .write = sdhci_write, |
| .valid = { |
| .min_access_size = 1, |
| .max_access_size = 4, |
| .unaligned = false |
| }, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| }; |
| |
| static void sdhci_init_readonly_registers(SDHCIState *s, Error **errp) |
| { |
| Error *local_err = NULL; |
| |
| switch (s->sd_spec_version) { |
| case 2 ... 3: |
| break; |
| default: |
| error_setg(errp, "Only Spec v2/v3 are supported"); |
| return; |
| } |
| s->version = (SDHC_HCVER_VENDOR << 8) | (s->sd_spec_version - 1); |
| |
| sdhci_check_capareg(s, &local_err); |
| if (local_err) { |
| error_propagate(errp, local_err); |
| return; |
| } |
| } |
| |
| /* --- qdev common --- */ |
| |
| void sdhci_initfn(SDHCIState *s) |
| { |
| qbus_create_inplace(&s->sdbus, sizeof(s->sdbus), |
| TYPE_SDHCI_BUS, DEVICE(s), "sd-bus"); |
| |
| s->insert_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_raise_insertion_irq, s); |
| s->transfer_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_data_transfer, s); |
| |
| s->io_ops = &sdhci_mmio_ops; |
| } |
| |
| void sdhci_uninitfn(SDHCIState *s) |
| { |
| timer_del(s->insert_timer); |
| timer_free(s->insert_timer); |
| timer_del(s->transfer_timer); |
| timer_free(s->transfer_timer); |
| |
| g_free(s->fifo_buffer); |
| s->fifo_buffer = NULL; |
| } |
| |
| void sdhci_common_realize(SDHCIState *s, Error **errp) |
| { |
| Error *local_err = NULL; |
| |
| sdhci_init_readonly_registers(s, &local_err); |
| if (local_err) { |
| error_propagate(errp, local_err); |
| return; |
| } |
| s->buf_maxsz = sdhci_get_fifolen(s); |
| s->fifo_buffer = g_malloc0(s->buf_maxsz); |
| |
| memory_region_init_io(&s->iomem, OBJECT(s), s->io_ops, s, "sdhci", |
| SDHC_REGISTERS_MAP_SIZE); |
| } |
| |
| void sdhci_common_unrealize(SDHCIState *s) |
| { |
| /* This function is expected to be called only once for each class: |
| * - SysBus: via DeviceClass->unrealize(), |
| * - PCI: via PCIDeviceClass->exit(). |
| * However to avoid double-free and/or use-after-free we still nullify |
| * this variable (better safe than sorry!). */ |
| g_free(s->fifo_buffer); |
| s->fifo_buffer = NULL; |
| } |
| |
| static bool sdhci_pending_insert_vmstate_needed(void *opaque) |
| { |
| SDHCIState *s = opaque; |
| |
| return s->pending_insert_state; |
| } |
| |
| static const VMStateDescription sdhci_pending_insert_vmstate = { |
| .name = "sdhci/pending-insert", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .needed = sdhci_pending_insert_vmstate_needed, |
| .fields = (VMStateField[]) { |
| VMSTATE_BOOL(pending_insert_state, SDHCIState), |
| VMSTATE_END_OF_LIST() |
| }, |
| }; |
| |
| 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(hostctl1, 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, buf_maxsz), |
| VMSTATE_TIMER_PTR(insert_timer, SDHCIState), |
| VMSTATE_TIMER_PTR(transfer_timer, SDHCIState), |
| VMSTATE_END_OF_LIST() |
| }, |
| .subsections = (const VMStateDescription*[]) { |
| &sdhci_pending_insert_vmstate, |
| NULL |
| }, |
| }; |
| |
| void sdhci_common_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
| dc->vmsd = &sdhci_vmstate; |
| dc->reset = sdhci_poweron_reset; |
| } |
| |
| /* --- qdev SysBus --- */ |
| |
| static Property sdhci_sysbus_properties[] = { |
| DEFINE_SDHCI_COMMON_PROPERTIES(SDHCIState), |
| DEFINE_PROP_BOOL("pending-insert-quirk", SDHCIState, pending_insert_quirk, |
| false), |
| DEFINE_PROP_LINK("dma", SDHCIState, |
| dma_mr, TYPE_MEMORY_REGION, MemoryRegion *), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void sdhci_sysbus_init(Object *obj) |
| { |
| SDHCIState *s = SYSBUS_SDHCI(obj); |
| |
| sdhci_initfn(s); |
| } |
| |
| static void sdhci_sysbus_finalize(Object *obj) |
| { |
| SDHCIState *s = SYSBUS_SDHCI(obj); |
| |
| if (s->dma_mr) { |
| object_unparent(OBJECT(s->dma_mr)); |
| } |
| |
| sdhci_uninitfn(s); |
| } |
| |
| static void sdhci_sysbus_realize(DeviceState *dev, Error **errp) |
| { |
| SDHCIState *s = SYSBUS_SDHCI(dev); |
| SysBusDevice *sbd = SYS_BUS_DEVICE(dev); |
| Error *local_err = NULL; |
| |
| sdhci_common_realize(s, &local_err); |
| if (local_err) { |
| error_propagate(errp, local_err); |
| return; |
| } |
| |
| if (s->dma_mr) { |
| s->dma_as = &s->sysbus_dma_as; |
| address_space_init(s->dma_as, s->dma_mr, "sdhci-dma"); |
| } else { |
| /* use system_memory() if property "dma" not set */ |
| s->dma_as = &address_space_memory; |
| } |
| |
| sysbus_init_irq(sbd, &s->irq); |
| |
| sysbus_init_mmio(sbd, &s->iomem); |
| } |
| |
| static void sdhci_sysbus_unrealize(DeviceState *dev) |
| { |
| SDHCIState *s = SYSBUS_SDHCI(dev); |
| |
| sdhci_common_unrealize(s); |
| |
| if (s->dma_mr) { |
| address_space_destroy(s->dma_as); |
| } |
| } |
| |
| static void sdhci_sysbus_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| device_class_set_props(dc, sdhci_sysbus_properties); |
| dc->realize = sdhci_sysbus_realize; |
| dc->unrealize = sdhci_sysbus_unrealize; |
| |
| sdhci_common_class_init(klass, data); |
| } |
| |
| static const TypeInfo sdhci_sysbus_info = { |
| .name = TYPE_SYSBUS_SDHCI, |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(SDHCIState), |
| .instance_init = sdhci_sysbus_init, |
| .instance_finalize = sdhci_sysbus_finalize, |
| .class_init = sdhci_sysbus_class_init, |
| }; |
| |
| /* --- qdev bus master --- */ |
| |
| static void sdhci_bus_class_init(ObjectClass *klass, void *data) |
| { |
| SDBusClass *sbc = SD_BUS_CLASS(klass); |
| |
| sbc->set_inserted = sdhci_set_inserted; |
| sbc->set_readonly = sdhci_set_readonly; |
| } |
| |
| static const TypeInfo sdhci_bus_info = { |
| .name = TYPE_SDHCI_BUS, |
| .parent = TYPE_SD_BUS, |
| .instance_size = sizeof(SDBus), |
| .class_init = sdhci_bus_class_init, |
| }; |
| |
| /* --- qdev i.MX eSDHC --- */ |
| |
| static uint64_t usdhc_read(void *opaque, hwaddr offset, unsigned size) |
| { |
| SDHCIState *s = SYSBUS_SDHCI(opaque); |
| uint32_t ret; |
| uint16_t hostctl1; |
| |
| switch (offset) { |
| default: |
| return sdhci_read(opaque, offset, size); |
| |
| case SDHC_HOSTCTL: |
| /* |
| * For a detailed explanation on the following bit |
| * manipulation code see comments in a similar part of |
| * usdhc_write() |
| */ |
| hostctl1 = SDHC_DMA_TYPE(s->hostctl1) << (8 - 3); |
| |
| if (s->hostctl1 & SDHC_CTRL_8BITBUS) { |
| hostctl1 |= ESDHC_CTRL_8BITBUS; |
| } |
| |
| if (s->hostctl1 & SDHC_CTRL_4BITBUS) { |
| hostctl1 |= ESDHC_CTRL_4BITBUS; |
| } |
| |
| ret = hostctl1; |
| ret |= (uint32_t)s->blkgap << 16; |
| ret |= (uint32_t)s->wakcon << 24; |
| |
| break; |
| |
| case SDHC_PRNSTS: |
| /* Add SDSTB (SD Clock Stable) bit to PRNSTS */ |
| ret = sdhci_read(opaque, offset, size) & ~ESDHC_PRNSTS_SDSTB; |
| if (s->clkcon & SDHC_CLOCK_INT_STABLE) { |
| ret |= ESDHC_PRNSTS_SDSTB; |
| } |
| break; |
| |
| case ESDHC_VENDOR_SPEC: |
| ret = s->vendor_spec; |
| break; |
| case ESDHC_DLL_CTRL: |
| case ESDHC_TUNE_CTRL_STATUS: |
| case ESDHC_UNDOCUMENTED_REG27: |
| case ESDHC_TUNING_CTRL: |
| case ESDHC_MIX_CTRL: |
| case ESDHC_WTMK_LVL: |
| ret = 0; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static void |
| usdhc_write(void *opaque, hwaddr offset, uint64_t val, unsigned size) |
| { |
| SDHCIState *s = SYSBUS_SDHCI(opaque); |
| uint8_t hostctl1; |
| uint32_t value = (uint32_t)val; |
| |
| switch (offset) { |
| case ESDHC_DLL_CTRL: |
| case ESDHC_TUNE_CTRL_STATUS: |
| case ESDHC_UNDOCUMENTED_REG27: |
| case ESDHC_TUNING_CTRL: |
| case ESDHC_WTMK_LVL: |
| break; |
| |
| case ESDHC_VENDOR_SPEC: |
| s->vendor_spec = value; |
| switch (s->vendor) { |
| case SDHCI_VENDOR_IMX: |
| if (value & ESDHC_IMX_FRC_SDCLK_ON) { |
| s->prnsts &= ~SDHC_IMX_CLOCK_GATE_OFF; |
| } else { |
| s->prnsts |= SDHC_IMX_CLOCK_GATE_OFF; |
| } |
| break; |
| default: |
| break; |
| } |
| break; |
| |
| case SDHC_HOSTCTL: |
| /* |
| * Here's What ESDHCI has at offset 0x28 (SDHC_HOSTCTL) |
| * |
| * 7 6 5 4 3 2 1 0 |
| * |-----------+--------+--------+-----------+----------+---------| |
| * | Card | Card | Endian | DATA3 | Data | Led | |
| * | Detect | Detect | Mode | as Card | Transfer | Control | |
| * | Signal | Test | | Detection | Width | | |
| * | Selection | Level | | Pin | | | |
| * |-----------+--------+--------+-----------+----------+---------| |
| * |
| * and 0x29 |
| * |
| * 15 10 9 8 |
| * |----------+------| |
| * | Reserved | DMA | |
| * | | Sel. | |
| * | | | |
| * |----------+------| |
| * |
| * and here's what SDCHI spec expects those offsets to be: |
| * |
| * 0x28 (Host Control Register) |
| * |
| * 7 6 5 4 3 2 1 0 |
| * |--------+--------+----------+------+--------+----------+---------| |
| * | Card | Card | Extended | DMA | High | Data | LED | |
| * | Detect | Detect | Data | Sel. | Speed | Transfer | Control | |
| * | Signal | Test | Transfer | | Enable | Width | | |
| * | Sel. | Level | Width | | | | | |
| * |--------+--------+----------+------+--------+----------+---------| |
| * |
| * and 0x29 (Power Control Register) |
| * |
| * |----------------------------------| |
| * | Power Control Register | |
| * | | |
| * | Description omitted, | |
| * | since it has no analog in ESDHCI | |
| * | | |
| * |----------------------------------| |
| * |
| * Since offsets 0x2A and 0x2B should be compatible between |
| * both IP specs we only need to reconcile least 16-bit of the |
| * word we've been given. |
| */ |
| |
| /* |
| * First, save bits 7 6 and 0 since they are identical |
| */ |
| hostctl1 = value & (SDHC_CTRL_LED | |
| SDHC_CTRL_CDTEST_INS | |
| SDHC_CTRL_CDTEST_EN); |
| /* |
| * Second, split "Data Transfer Width" from bits 2 and 1 in to |
| * bits 5 and 1 |
| */ |
| if (value & ESDHC_CTRL_8BITBUS) { |
| hostctl1 |= SDHC_CTRL_8BITBUS; |
| } |
| |
| if (value & ESDHC_CTRL_4BITBUS) { |
| hostctl1 |= ESDHC_CTRL_4BITBUS; |
| } |
| |
| /* |
| * Third, move DMA select from bits 9 and 8 to bits 4 and 3 |
| */ |
| hostctl1 |= SDHC_DMA_TYPE(value >> (8 - 3)); |
| |
| /* |
| * Now place the corrected value into low 16-bit of the value |
| * we are going to give standard SDHCI write function |
| * |
| * NOTE: This transformation should be the inverse of what can |
| * be found in drivers/mmc/host/sdhci-esdhc-imx.c in Linux |
| * kernel |
| */ |
| value &= ~UINT16_MAX; |
| value |= hostctl1; |
| value |= (uint16_t)s->pwrcon << 8; |
| |
| sdhci_write(opaque, offset, value, size); |
| break; |
| |
| case ESDHC_MIX_CTRL: |
| /* |
| * So, when SD/MMC stack in Linux tries to write to "Transfer |
| * Mode Register", ESDHC i.MX quirk code will translate it |
| * into a write to ESDHC_MIX_CTRL, so we do the opposite in |
| * order to get where we started |
| * |
| * Note that Auto CMD23 Enable bit is located in a wrong place |
| * on i.MX, but since it is not used by QEMU we do not care. |
| * |
| * We don't want to call sdhci_write(.., SDHC_TRNMOD, ...) |
| * here becuase it will result in a call to |
| * sdhci_send_command(s) which we don't want. |
| * |
| */ |
| s->trnmod = value & UINT16_MAX; |
| break; |
| case SDHC_TRNMOD: |
| /* |
| * Similar to above, but this time a write to "Command |
| * Register" will be translated into a 4-byte write to |
| * "Transfer Mode register" where lower 16-bit of value would |
| * be set to zero. So what we do is fill those bits with |
| * cached value from s->trnmod and let the SDHCI |
| * infrastructure handle the rest |
| */ |
| sdhci_write(opaque, offset, val | s->trnmod, size); |
| break; |
| case SDHC_BLKSIZE: |
| /* |
| * ESDHCI does not implement "Host SDMA Buffer Boundary", and |
| * Linux driver will try to zero this field out which will |
| * break the rest of SDHCI emulation. |
| * |
| * Linux defaults to maximum possible setting (512K boundary) |
| * and it seems to be the only option that i.MX IP implements, |
| * so we artificially set it to that value. |
| */ |
| val |= 0x7 << 12; |
| /* FALLTHROUGH */ |
| default: |
| sdhci_write(opaque, offset, val, size); |
| break; |
| } |
| } |
| |
| static const MemoryRegionOps usdhc_mmio_ops = { |
| .read = usdhc_read, |
| .write = usdhc_write, |
| .valid = { |
| .min_access_size = 1, |
| .max_access_size = 4, |
| .unaligned = false |
| }, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| }; |
| |
| static void imx_usdhc_init(Object *obj) |
| { |
| SDHCIState *s = SYSBUS_SDHCI(obj); |
| |
| s->io_ops = &usdhc_mmio_ops; |
| s->quirks = SDHCI_QUIRK_NO_BUSY_IRQ; |
| } |
| |
| static const TypeInfo imx_usdhc_info = { |
| .name = TYPE_IMX_USDHC, |
| .parent = TYPE_SYSBUS_SDHCI, |
| .instance_init = imx_usdhc_init, |
| }; |
| |
| /* --- qdev Samsung s3c --- */ |
| |
| #define S3C_SDHCI_CONTROL2 0x80 |
| #define S3C_SDHCI_CONTROL3 0x84 |
| #define S3C_SDHCI_CONTROL4 0x8c |
| |
| static uint64_t sdhci_s3c_read(void *opaque, hwaddr offset, unsigned size) |
| { |
| uint64_t ret; |
| |
| switch (offset) { |
| case S3C_SDHCI_CONTROL2: |
| case S3C_SDHCI_CONTROL3: |
| case S3C_SDHCI_CONTROL4: |
| /* ignore */ |
| ret = 0; |
| break; |
| default: |
| ret = sdhci_read(opaque, offset, size); |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static void sdhci_s3c_write(void *opaque, hwaddr offset, uint64_t val, |
| unsigned size) |
| { |
| switch (offset) { |
| case S3C_SDHCI_CONTROL2: |
| case S3C_SDHCI_CONTROL3: |
| case S3C_SDHCI_CONTROL4: |
| /* ignore */ |
| break; |
| default: |
| sdhci_write(opaque, offset, val, size); |
| break; |
| } |
| } |
| |
| static const MemoryRegionOps sdhci_s3c_mmio_ops = { |
| .read = sdhci_s3c_read, |
| .write = sdhci_s3c_write, |
| .valid = { |
| .min_access_size = 1, |
| .max_access_size = 4, |
| .unaligned = false |
| }, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| }; |
| |
| static void sdhci_s3c_init(Object *obj) |
| { |
| SDHCIState *s = SYSBUS_SDHCI(obj); |
| |
| s->io_ops = &sdhci_s3c_mmio_ops; |
| } |
| |
| static const TypeInfo sdhci_s3c_info = { |
| .name = TYPE_S3C_SDHCI , |
| .parent = TYPE_SYSBUS_SDHCI, |
| .instance_init = sdhci_s3c_init, |
| }; |
| |
| static void sdhci_register_types(void) |
| { |
| type_register_static(&sdhci_sysbus_info); |
| type_register_static(&sdhci_bus_info); |
| type_register_static(&imx_usdhc_info); |
| type_register_static(&sdhci_s3c_info); |
| } |
| |
| type_init(sdhci_register_types) |