mirror of https://github.com/xemu-project/xemu.git
Improve PCI debug support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6234 c046a42c-6fe2-441c-8c8c-71466251a162
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59d9413094
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8026037b42
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@ -25,6 +25,16 @@
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/* Worker routines for a PCI host controller that uses an {address,data}
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register pair to access PCI configuration space. */
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/* debug PCI */
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//#define DEBUG_PCI
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#ifdef DEBUG_PCI
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#define PCI_DPRINTF(fmt, args...) \
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do { printf("pci_host_data: " fmt , ##args); } while (0)
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#else
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#define PCI_DPRINTF(fmt, args...)
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#endif
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typedef struct {
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uint32_t config_reg;
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PCIBus *bus;
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@ -33,6 +43,9 @@ typedef struct {
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static void pci_host_data_writeb(void* opaque, pci_addr_t addr, uint32_t val)
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{
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PCIHostState *s = opaque;
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PCI_DPRINTF("writeb addr " TARGET_FMT_plx " val %x\n",
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(target_phys_addr_t)addr, val);
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if (s->config_reg & (1u << 31))
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pci_data_write(s->bus, s->config_reg | (addr & 3), val, 1);
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}
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@ -43,6 +56,8 @@ static void pci_host_data_writew(void* opaque, pci_addr_t addr, uint32_t val)
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#ifdef TARGET_WORDS_BIGENDIAN
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val = bswap16(val);
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#endif
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PCI_DPRINTF("writew addr " TARGET_FMT_plx " val %x\n",
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(target_phys_addr_t)addr, val);
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if (s->config_reg & (1u << 31))
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pci_data_write(s->bus, s->config_reg | (addr & 3), val, 2);
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}
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@ -53,6 +68,8 @@ static void pci_host_data_writel(void* opaque, pci_addr_t addr, uint32_t val)
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#ifdef TARGET_WORDS_BIGENDIAN
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val = bswap32(val);
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#endif
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PCI_DPRINTF("writel addr " TARGET_FMT_plx " val %x\n",
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(target_phys_addr_t)addr, val);
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if (s->config_reg & (1u << 31))
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pci_data_write(s->bus, s->config_reg, val, 4);
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}
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@ -60,9 +77,14 @@ static void pci_host_data_writel(void* opaque, pci_addr_t addr, uint32_t val)
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static uint32_t pci_host_data_readb(void* opaque, pci_addr_t addr)
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{
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PCIHostState *s = opaque;
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uint32_t val;
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if (!(s->config_reg & (1 << 31)))
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return 0xff;
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return pci_data_read(s->bus, s->config_reg | (addr & 3), 1);
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val = pci_data_read(s->bus, s->config_reg | (addr & 3), 1);
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PCI_DPRINTF("readb addr " TARGET_FMT_plx " val %x\n",
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(target_phys_addr_t)addr, val);
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return val;
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}
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static uint32_t pci_host_data_readw(void* opaque, pci_addr_t addr)
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@ -72,6 +94,8 @@ static uint32_t pci_host_data_readw(void* opaque, pci_addr_t addr)
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if (!(s->config_reg & (1 << 31)))
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return 0xffff;
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val = pci_data_read(s->bus, s->config_reg | (addr & 3), 2);
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PCI_DPRINTF("readw addr " TARGET_FMT_plx " val %x\n",
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(target_phys_addr_t)addr, val);
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#ifdef TARGET_WORDS_BIGENDIAN
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val = bswap16(val);
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#endif
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@ -85,6 +109,8 @@ static uint32_t pci_host_data_readl(void* opaque, pci_addr_t addr)
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if (!(s->config_reg & (1 << 31)))
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return 0xffffffff;
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val = pci_data_read(s->bus, s->config_reg | (addr & 3), 4);
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PCI_DPRINTF("readl addr " TARGET_FMT_plx " val %x\n",
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(target_phys_addr_t)addr, val);
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#ifdef TARGET_WORDS_BIGENDIAN
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val = bswap32(val);
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#endif
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