The platform APIs are enhanced to provide support for parsing pci device
tree nodes and storing the config-space address which is later used for
pci_read/pci_write config calls.
---
xen/arch/arm/platform.c | 27 +++++++++++++++++++++++++++
xen/include/asm-arm/platform.h | 18 +++++++++++++++++-
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/xen/arch/arm/platform.c b/xen/arch/arm/platform.c
index cb4cda8..25f07d2 100644
--- a/xen/arch/arm/platform.c
+++ b/xen/arch/arm/platform.c
@@ -128,6 +128,33 @@ int __init platform_smp_init(void)
}
#endif
+int platform_pci_dt_node_init(struct dt_device_node *node, const void *data)
+{
+ if(platform->pci_dt_node_init)
+ return platform->pci_dt_node_init(node, data);
+ return -1;
+}
+
+int platform_pci_write_config(unsigned int seg, unsigned int bus,
+ unsigned int dev, unsigned int func,
+ int reg, int size, uint32_t val)
+{
+ if(platform->pci_write_config)
+ return platform->pci_write_config(seg, bus, dev, func, reg, size, val);
+
+ return -1;
+}
+
+int platform_pci_read_config(unsigned int seg, unsigned int bus,
+ unsigned int dev, unsigned int func,
+ int reg, int size, uint32_t *val)
+{
+ if(platform->pci_read_config)
+ return platform->pci_read_config(seg, bus, dev, func, reg, size, val);
+
+ return -1;
+}
+
void platform_reset(void)
{
if ( platform && platform->reset )
diff --git a/xen/include/asm-arm/platform.h b/xen/include/asm-arm/platform.h
index eefaca6..da3cc63 100644
--- a/xen/include/asm-arm/platform.h
+++ b/xen/include/asm-arm/platform.h
@@ -26,6 +26,16 @@ struct platform_desc {
void (*reset)(void);
/* Platform power-off */
void (*poweroff)(void);
+ /* PCI callback when a pci device tree node is found */
+ int (*pci_dt_node_init)(struct dt_device_node *node, const void *data);
+ /* PCI configspace read and write */
+ int (*pci_read_config)(unsigned int seg, unsigned int bus,
+ unsigned int dev, unsigned int func,
+ int reg, int size, uint32_t *val);
+
+ int (*pci_write_config)(unsigned int seg, unsigned int bus,
+ unsigned int dev, unsigned int func,
+ int reg, int size, uint32_t val);
/*
* Platform quirks
* Defined has a function because a platform can support multiple
@@ -73,7 +83,13 @@ bool_t platform_has_quirk(uint32_t quirk);
bool_t platform_device_is_blacklisted(const struct dt_device_node *node);
unsigned int platform_dom0_evtchn_ppi(void);
void platform_dom0_gnttab(paddr_t *start, paddr_t *size);
-
+int platform_pci_dt_node_init(struct dt_device_node *node, const void *data);
+int platform_pci_write_config(unsigned int seg, unsigned int bus,
+ unsigned int dev, unsigned int func,
+ int reg, int size, uint32_t val);
+int platform_pci_read_config(unsigned int seg, unsigned int bus,
+ unsigned int dev, unsigned int func,
+ int reg, int size, uint32_t *val);
#define PLATFORM_START(_name, _namestr) \
static const struct platform_desc __plat_desc_##_name __used \
__attribute__((__section__(".arch.info"))) = { \
--
1.9.1
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