hw/misc/grlib_ahb_apb_pnp: Support 8 and 16 bit accesses
In real hardware, the APB and AHB PNP data tables can be accessed with byte and halfword reads as well as word reads. Our implementation currently only handles word reads. Add support for the 8 and 16 bit accesses. Note that we only need to handle aligned accesses -- unaligned accesses should continue to trap, as happens on hardware. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1132 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Frederic Konrad <fkonrad@amd.com> Message-Id: <20220802131925.3380923-1-peter.maydell@linaro.org> Tested-by: Tomasz Martyniak <gitlab.com/tom4r> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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@ -136,7 +136,8 @@ static uint64_t grlib_ahb_pnp_read(void *opaque, hwaddr offset, unsigned size)
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uint32_t val;
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uint32_t val;
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val = ahb_pnp->regs[offset >> 2];
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val = ahb_pnp->regs[offset >> 2];
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trace_grlib_ahb_pnp_read(offset, val);
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val = extract32(val, (4 - (offset & 3) - size) * 8, size * 8);
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trace_grlib_ahb_pnp_read(offset, size, val);
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return val;
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return val;
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}
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}
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@ -152,7 +153,7 @@ static const MemoryRegionOps grlib_ahb_pnp_ops = {
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.write = grlib_ahb_pnp_write,
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.write = grlib_ahb_pnp_write,
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.endianness = DEVICE_BIG_ENDIAN,
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.endianness = DEVICE_BIG_ENDIAN,
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.impl = {
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.impl = {
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.min_access_size = 4,
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.min_access_size = 1,
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.max_access_size = 4,
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.max_access_size = 4,
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},
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},
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};
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};
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@ -247,7 +248,8 @@ static uint64_t grlib_apb_pnp_read(void *opaque, hwaddr offset, unsigned size)
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uint32_t val;
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uint32_t val;
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val = apb_pnp->regs[offset >> 2];
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val = apb_pnp->regs[offset >> 2];
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trace_grlib_apb_pnp_read(offset, val);
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val = extract32(val, (4 - (offset & 3) - size) * 8, size * 8);
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trace_grlib_apb_pnp_read(offset, size, val);
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return val;
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return val;
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}
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}
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@ -263,7 +265,7 @@ static const MemoryRegionOps grlib_apb_pnp_ops = {
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.write = grlib_apb_pnp_write,
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.write = grlib_apb_pnp_write,
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.endianness = DEVICE_BIG_ENDIAN,
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.endianness = DEVICE_BIG_ENDIAN,
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.impl = {
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.impl = {
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.min_access_size = 4,
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.min_access_size = 1,
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.max_access_size = 4,
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.max_access_size = 4,
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},
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},
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};
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};
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@ -247,8 +247,8 @@ via1_adb_poll(uint8_t data, const char *vadbint, int status, int index, int size
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via1_auxmode(int mode) "setting auxmode to %d"
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via1_auxmode(int mode) "setting auxmode to %d"
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# grlib_ahb_apb_pnp.c
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# grlib_ahb_apb_pnp.c
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grlib_ahb_pnp_read(uint64_t addr, uint32_t value) "AHB PnP read addr:0x%03"PRIx64" data:0x%08x"
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grlib_ahb_pnp_read(uint64_t addr, unsigned size, uint32_t value) "AHB PnP read addr:0x%03"PRIx64" size:%u data:0x%08x"
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grlib_apb_pnp_read(uint64_t addr, uint32_t value) "APB PnP read addr:0x%03"PRIx64" data:0x%08x"
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grlib_apb_pnp_read(uint64_t addr, unsigned size, uint32_t value) "APB PnP read addr:0x%03"PRIx64" size:%u data:0x%08x"
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# led.c
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# led.c
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led_set_intensity(const char *color, const char *desc, uint8_t intensity_percent) "LED desc:'%s' color:%s intensity: %u%%"
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led_set_intensity(const char *color, const char *desc, uint8_t intensity_percent) "LED desc:'%s' color:%s intensity: %u%%"
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