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-rw-r--r--hw/pci.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/hw/pci.h b/hw/pci.h
index 33b0b184e..ee53f26bb 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -464,6 +464,67 @@ pci_quad_test_and_set_mask(uint8_t *config, uint64_t mask)
return val & mask;
}
+/* Access a register specified by a mask */
+static inline void
+pci_set_byte_by_mask(uint8_t *config, uint8_t mask, uint8_t reg)
+{
+ uint8_t val = pci_get_byte(config);
+ uint8_t rval = reg << (ffs(mask) - 1);
+ pci_set_byte(config, (~mask & val) | (mask & rval));
+}
+
+static inline uint8_t
+pci_get_byte_by_mask(uint8_t *config, uint8_t mask)
+{
+ uint8_t val = pci_get_byte(config);
+ return (val & mask) >> (ffs(mask) - 1);
+}
+
+static inline void
+pci_set_word_by_mask(uint8_t *config, uint16_t mask, uint16_t reg)
+{
+ uint16_t val = pci_get_word(config);
+ uint16_t rval = reg << (ffs(mask) - 1);
+ pci_set_word(config, (~mask & val) | (mask & rval));
+}
+
+static inline uint16_t
+pci_get_word_by_mask(uint8_t *config, uint16_t mask)
+{
+ uint16_t val = pci_get_word(config);
+ return (val & mask) >> (ffs(mask) - 1);
+}
+
+static inline void
+pci_set_long_by_mask(uint8_t *config, uint32_t mask, uint32_t reg)
+{
+ uint32_t val = pci_get_long(config);
+ uint32_t rval = reg << (ffs(mask) - 1);
+ pci_set_long(config, (~mask & val) | (mask & rval));
+}
+
+static inline uint32_t
+pci_get_long_by_mask(uint8_t *config, uint32_t mask)
+{
+ uint32_t val = pci_get_long(config);
+ return (val & mask) >> (ffs(mask) - 1);
+}
+
+static inline void
+pci_set_quad_by_mask(uint8_t *config, uint64_t mask, uint64_t reg)
+{
+ uint64_t val = pci_get_quad(config);
+ uint64_t rval = reg << (ffs(mask) - 1);
+ pci_set_quad(config, (~mask & val) | (mask & rval));
+}
+
+static inline uint64_t
+pci_get_quad_by_mask(uint8_t *config, uint64_t mask)
+{
+ uint64_t val = pci_get_quad(config);
+ return (val & mask) >> (ffs(mask) - 1);
+}
+
PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,
const char *name);
PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,