From 6ff37c3dfaf5859150bbd4d9669f48954101c13c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 8 Feb 2018 13:47:58 -0300 Subject: sdhci: check the Spec v1 capabilities correctness MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Incorrect value will throw an error. Note than Spec v2 is supported by default. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Alistair Francis Message-Id: <20180208164818.7961-11-f4bug@amsat.org> --- hw/sd/sdhci-internal.h | 20 ++++++++++- hw/sd/sdhci.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++++- hw/sd/trace-events | 1 + 3 files changed, 116 insertions(+), 2 deletions(-) (limited to 'hw') diff --git a/hw/sd/sdhci-internal.h b/hw/sd/sdhci-internal.h index def1c7f..f3d54fd 100644 --- a/hw/sd/sdhci-internal.h +++ b/hw/sd/sdhci-internal.h @@ -87,6 +87,8 @@ /* R/W Host control Register 0x0 */ #define SDHC_HOSTCTL 0x28 #define SDHC_CTRL_LED 0x01 +#define SDHC_CTRL_DATATRANSFERWIDTH 0x02 /* SD mode only */ +#define SDHC_CTRL_HIGH_SPEED 0x04 #define SDHC_CTRL_DMA_CHECK_MASK 0x18 #define SDHC_CTRL_SDMA 0x00 #define SDHC_CTRL_ADMA1_32 0x08 @@ -102,6 +104,7 @@ /* R/W Power Control Register 0x0 */ #define SDHC_PWRCON 0x29 #define SDHC_POWER_ON (1 << 0) +FIELD(SDHC_PWRCON, BUS_VOLTAGE, 1, 3); /* R/W Block Gap Control Register 0x0 */ #define SDHC_BLKGAP 0x2A @@ -124,6 +127,7 @@ /* R/W Timeout Control Register 0x0 */ #define SDHC_TIMEOUTCON 0x2E +FIELD(SDHC_TIMEOUTCON, COUNTER, 0, 4); /* R/W Software Reset Register 0x0 */ #define SDHC_SWRST 0x2F @@ -180,17 +184,31 @@ /* ROC Auto CMD12 error status register 0x0 */ #define SDHC_ACMD12ERRSTS 0x3C +FIELD(SDHC_ACMD12ERRSTS, TIMEOUT_ERR, 1, 1); +FIELD(SDHC_ACMD12ERRSTS, CRC_ERR, 2, 1); +FIELD(SDHC_ACMD12ERRSTS, INDEX_ERR, 4, 1); /* HWInit Capabilities Register 0x05E80080 */ #define SDHC_CAPAB 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) +FIELD(SDHC_CAPAB, TOCLKFREQ, 0, 6); +FIELD(SDHC_CAPAB, TOUNIT, 7, 1); +FIELD(SDHC_CAPAB, BASECLKFREQ, 8, 8); FIELD(SDHC_CAPAB, MAXBLOCKLENGTH, 16, 2); +FIELD(SDHC_CAPAB, HIGHSPEED, 21, 1); +FIELD(SDHC_CAPAB, SDMA, 22, 1); +FIELD(SDHC_CAPAB, SUSPRESUME, 23, 1); +FIELD(SDHC_CAPAB, V33, 24, 1); +FIELD(SDHC_CAPAB, V30, 25, 1); +FIELD(SDHC_CAPAB, V18, 26, 1); /* HWInit Maximum Current Capabilities Register 0x0 */ #define SDHC_MAXCURR 0x48 +FIELD(SDHC_MAXCURR, V33_VDD1, 0, 8); +FIELD(SDHC_MAXCURR, V30_VDD1, 8, 8); +FIELD(SDHC_MAXCURR, V18_VDD1, 16, 8); /* W Force Event Auto CMD12 Error Interrupt Register 0x0000 */ #define SDHC_FEAER 0x50 diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c index f22ed91..116565a 100644 --- a/hw/sd/sdhci.c +++ b/hw/sd/sdhci.c @@ -23,6 +23,7 @@ */ #include "qemu/osdep.h" +#include "qemu/error-report.h" #include "qapi/error.h" #include "hw/hw.h" #include "sysemu/block-backend.h" @@ -63,6 +64,92 @@ 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) +{ + 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 2: /* default version */ + + /* 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) || @@ -990,7 +1077,7 @@ sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size) case SDHC_TRNMOD: /* DMA can be enabled only if it is supported as indicated by * capabilities register */ - if (!(s->capareg & SDHC_CAN_DO_DMA)) { + if (!(s->capareg & R_SDHC_CAPAB_SDMA_MASK)) { value &= ~SDHC_TRNS_DMA; } MASKED_WRITE(s->trnmod, mask, value & SDHC_TRNMOD_MASK); @@ -1125,11 +1212,19 @@ static const MemoryRegionOps sdhci_mmio_ops = { static void sdhci_init_readonly_registers(SDHCIState *s, Error **errp) { + Error *local_err = NULL; + if (s->sd_spec_version != 2) { error_setg(errp, "Only Spec v2 is 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 --- */ diff --git a/hw/sd/trace-events b/hw/sd/trace-events index 0a12115..78d8707 100644 --- a/hw/sd/trace-events +++ b/hw/sd/trace-events @@ -13,6 +13,7 @@ sdhci_adma_transfer_completed(void) "" sdhci_access(const char *access, unsigned int size, uint64_t offset, const char *dir, uint64_t val, uint64_t val2) "%s%u: addr[0x%04" PRIx64 "] %s 0x%08" PRIx64 " (%" PRIu64 ")" sdhci_read_dataport(uint16_t data_count) "all %u bytes of data have been read from input buffer" sdhci_write_dataport(uint16_t data_count) "write buffer filled with %u bytes of data" +sdhci_capareg(const char *desc, uint16_t val) "%s: %u" # hw/sd/milkymist-memcard.c milkymist_memcard_memory_read(uint32_t addr, uint32_t value) "addr 0x%08x value 0x%08x" -- cgit v1.1