The only thing this returns is an idle status so the firmware continues, otherwise just ignores and logs access for debugging. This is a stop gap until proper implementation of this device lands.
Signed-off-by: BALATON Zoltan <[email protected]> --- hw/misc/macio/macio.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/hw/misc/macio/macio.c b/hw/misc/macio/macio.c index 8ba7af073c..c7e8556ca6 100644 --- a/hw/misc/macio/macio.c +++ b/hw/misc/macio/macio.c @@ -26,6 +26,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/module.h" +#include "qemu/log.h" #include "hw/ppc/mac.h" #include "hw/misc/macio/cuda.h" #include "hw/pci/pci.h" @@ -94,6 +95,33 @@ static void macio_bar_setup(MacIOState *s) macio_escc_legacy_setup(s); } +#define AWAC_CODEC_STATUS_REG 0x20 + +#define AWAC_MAKER_CRYSTAL 1 +#define AWAC_REV_SCREAMER 3 +#define AWAC_VALID_DATA 0x40 + +static uint64_t screamer_read(void *opaque, hwaddr addr, unsigned size) +{ + qemu_log_mask(LOG_UNIMP, + "macio: screamer read %" HWADDR_PRIx " %d\n", addr, size); + return (addr == AWAC_CODEC_STATUS_REG ? AWAC_VALID_DATA << 8 | + AWAC_MAKER_CRYSTAL << 16 | AWAC_REV_SCREAMER << 20 : 0); +} + +static void screamer_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + qemu_log_mask(LOG_UNIMP, + "macio: screamer write %" HWADDR_PRIx " %d = %"PRIx64"\n", + addr, size, val); +} + +const MemoryRegionOps screamer_ops = { + .read = screamer_read, + .write = screamer_write, +}; + static void macio_common_realize(PCIDevice *d, Error **errp) { MacIOState *s = MACIO(d); @@ -149,6 +177,7 @@ static void macio_oldworld_realize(PCIDevice *d, Error **errp) DeviceState *pic_dev = DEVICE(os->pic); Error *err = NULL; SysBusDevice *sysbus_dev; + MemoryRegion *screamer = g_new(MemoryRegion, 1); macio_common_realize(d, &err); if (err) { @@ -208,6 +237,11 @@ static void macio_oldworld_realize(PCIDevice *d, Error **errp) error_propagate(errp, err); return; } + + /* Dummy screamer sound device */ + memory_region_init_io(screamer, OBJECT(d), &screamer_ops, NULL, + "screamer", 0x2000); + memory_region_add_subregion(&s->bar, 0x14000, screamer); } static void macio_init_ide(MacIOState *s, MACIOIDEState *ide, int index) -- 2.21.3
