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GT64XXX: fix endianness issues: 

- Byte swapping for internal GT64XXX registers is controlled by the bit
  12 of the Configuration Register and not by the PCI Internal Command
  register.
- The bit 0 of the PCI Internal Command register controls byte swapping
  for PCI access *except for the internal PCI device*, that is when both
  bus and device numbers are 0.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4035 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-03-10 00:12:14 +00:00
parent 5567025f53
commit c6c99c3f17
1 changed files with 14 additions and 5 deletions
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19
hw/gt64xxx.c
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@ -309,7 +309,7 @@ static void gt64120_writel (void *opaque, target_phys_addr_t addr,
GT64120State *s = opaque;
uint32_t saddr;
if (!(s->regs[GT_PCI0_CMD] & 1))
if (!(s->regs[GT_CPU] & 0x00001000))
val = bswap32(val);
saddr = (addr & 0xfff) >> 2;
@ -530,7 +530,10 @@ static void gt64120_writel (void *opaque, target_phys_addr_t addr,
s->pci->config_reg = val & 0x80fffffc;
break;
case GT_PCI0_CFGDATA:
pci_host_data_writel(s->pci, 0, val);
if (!(s->regs[GT_PCI0_CMD] & 1) && (s->pci->config_reg & 0x00fff800))
val = bswap32(val);
if (s->pci->config_reg & (1u << 31))
pci_data_write(s->pci->bus, s->pci->config_reg, val, 4);
break;
/* Interrupts */
@ -767,7 +770,12 @@ static uint32_t gt64120_readl (void *opaque,
val = s->pci->config_reg;
break;
case GT_PCI0_CFGDATA:
val = pci_host_data_readl(s->pci, 0);
if (!(s->pci->config_reg & (1 << 31)))
val = 0xffffffff;
else
val = pci_data_read(s->pci->bus, s->pci->config_reg, 4);
if (!(s->regs[GT_PCI0_CMD] & 1) && (s->pci->config_reg & 0x00fff800))
val = bswap32(val);
break;
case GT_PCI0_CMD:
@ -840,7 +848,7 @@ static uint32_t gt64120_readl (void *opaque,
break;
}
if (!(s->regs[GT_PCI0_CMD] & 1))
if (!(s->regs[GT_CPU] & 0x00001000))
val = bswap32(val);
return val;
@ -1069,7 +1077,6 @@ static void gt64120_reset(void *opaque)
s->regs[GT_PCI1_CFGADDR] = 0x00000000;
s->regs[GT_PCI1_CFGDATA] = 0x00000000;
s->regs[GT_PCI0_CFGADDR] = 0x00000000;
s->regs[GT_PCI0_CFGDATA] = 0x00000000;
/* Interrupt registers are all zeroed at reset */
@ -1114,8 +1121,10 @@ PCIBus *pci_gt64120_init(qemu_irq *pic)
(void)&pci_host_data_writeb; /* avoid warning */
(void)&pci_host_data_writew; /* avoid warning */
(void)&pci_host_data_writel; /* avoid warning */
(void)&pci_host_data_readb; /* avoid warning */
(void)&pci_host_data_readw; /* avoid warning */
(void)&pci_host_data_readl; /* avoid warning */
s = qemu_mallocz(sizeof(GT64120State));
s->pci = qemu_mallocz(sizeof(GT64120PCIState));