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uninorth: remove token register from uninorth device 

>From observation of various OS sources it can be seen that the token register
introduced in 4e46dcdbd3 "PPC: Newworld: Add uninorth token register" is not
required, since the only register currently implemented is the uninorth hardware
version which is read-only.

Remove the token register implementation and instead return the uninorth
version corresponding to the hardware.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Mark Cave-Ayland 2018-05-06 15:20:05 +01:00 committed by David Gibson
parent 56e7404bc1
commit 45fefe7c4d
2 changed files with 8 additions and 7 deletions
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11
hw/pci-host/uninorth.c
View File

@ -524,19 +524,18 @@ static void unin_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
trace_unin_write(addr, value);
if (addr == 0x0) {
*(int *)opaque = value;
}
}
static uint64_t unin_read(void *opaque, hwaddr addr, unsigned size)
{
uint32_t value;
value = 0;
switch (addr) {
case 0:
value = *(int *)opaque;
value = UNINORTH_VERSION_10A;
break;
default:
value = 0;
}
trace_unin_read(addr, value);
@ -555,7 +554,7 @@ static void unin_init(Object *obj)
UNINState *s = UNI_NORTH(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
memory_region_init_io(&s->mem, obj, &unin_ops, &s->token, "unin", 0x1000);
memory_region_init_io(&s->mem, obj, &unin_ops, s, "unin", 0x1000);
sysbus_init_mmio(sbd, &s->mem);
}

4
include/hw/pci-host/uninorth.h
View File

@ -29,6 +29,9 @@
#include "hw/ppc/openpic.h"
/* UniNorth version */
#define UNINORTH_VERSION_10A 0x7
#define TYPE_UNI_NORTH_PCI_HOST_BRIDGE "uni-north-pci-pcihost"
#define TYPE_UNI_NORTH_AGP_HOST_BRIDGE "uni-north-agp-pcihost"
#define TYPE_UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE "uni-north-internal-pci-pcihost"
@ -57,7 +60,6 @@ typedef struct UNINState {
SysBusDevice parent_obj;
MemoryRegion mem;
int token[1];
} UNINState;
#define TYPE_UNI_NORTH "uni-north"