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[Qemu-devel] [PATCH 18/25] pci: add helper functions for pci config writ
From: |
Isaku Yamahata |
Subject: |
[Qemu-devel] [PATCH 18/25] pci: add helper functions for pci config write function. |
Date: |
Sat, 3 Oct 2009 05:16:10 +0900 |
add helper functions for pci config write function to check
if its configuration space is changed..
Those function will be used later.
Signed-off-by: Isaku Yamahata <address@hidden>
---
hw/pci.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 44 insertions(+), 0 deletions(-)
diff --git a/hw/pci.h b/hw/pci.h
index 3ea5258..ec989f0 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -400,6 +400,50 @@ static inline uint32_t pcie_config_size(PCIDevice *d)
return pci_is_pcie(d)? PCIE_CONFIG_SPACE_SIZE: PCI_CONFIG_SPACE_SIZE;
}
+static inline uint8_t *pci_write_config_init(PCIDevice *d,
+ uint32_t addr, int len)
+{
+ uint8_t *orig = qemu_malloc(pcie_config_size(d));
+ memcpy(orig + addr, d->config + addr, len);
+ return orig;
+}
+
+static inline void pci_write_config_done(uint8_t *orig)
+{
+ qemu_free(orig);
+}
+
+static inline int pci_config_changed(const uint8_t *orig, const uint8_t *new,
+ uint32_t addr, uint32_t len,
+ uint32_t base, uint32_t end)
+{
+ uint32_t low = MAX(addr, base);
+ uint32_t high = MIN(addr + len, end);
+
+ /* check if [addr, addr + len) intersects [base, end)
+ the intersection is [log, high) */
+ if (low >= high)
+ return 0;
+
+ return memcmp(orig + low, new + low, high - low);
+}
+
+static inline int pci_config_changed_with_size(const uint8_t *orig,
+ const uint8_t *new,
+ uint32_t addr, uint32_t len,
+ uint32_t base, uint32_t size)
+{
+ uint32_t low = MAX(addr, base);
+ uint32_t high = MIN(addr + len, base + size);
+
+ /* check if [addr, addr + len) intersects [base, base + size)
+ the intersection is [log, high) */
+ if (low >= high)
+ return 0;
+
+ return memcmp(orig + low, new + low, high - low);
+}
+
/* lsi53c895a.c */
#define LSI_MAX_DEVS 7
--
1.6.0.2
- [Qemu-devel] Re: [PATCH 08/25] pci: use helper functions to access pci config space., (continued)
- [Qemu-devel] [PATCH 10/25] pci: introduce FMT_pcibus for printf format for pcibus_t., Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 14/25] pci: factor out the logic to get pci device from address., Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 25/25] pci/monitor: print out bridge's filtering values and so on., Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 04/25] pci: use the symbolic constant, PCI_ROM_ADDRESS_ENABLE instead of 1., Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 15/25] pci_host.h: split non-inline static function in pci_host.h into pci_host.c, Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 20/25] pci: factor out config update logic., Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 18/25] pci: add helper functions for pci config write function.,
Isaku Yamahata <=
- [Qemu-devel] [PATCH 09/25] pci: introduce pcibus_t to represent pci bus address/size instead of uint32_t, Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 11/25] pci: typedef pcibus_t as uint64_t instead of uint32_t., Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 07/25] pci: helper functions to access PCIDevice::config, Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 23/25] pci: add helper function to initialize wmask., Isaku Yamahata, 2009/10/02
- [Qemu-devel] [PATCH 22/25] pci/brdige: qdevfy and initialize secondary bus and subordinate bus., Isaku Yamahata, 2009/10/02