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[Qemu-devel] [PATCH V5 09/29] pci: clean up of pci_default_read_config.
From: |
Isaku Yamahata |
Subject: |
[Qemu-devel] [PATCH V5 09/29] pci: clean up of pci_default_read_config. |
Date: |
Fri, 9 Oct 2009 15:28:42 +0900 |
This patch cleans up pci_default_read_config() removing
ugly length and range check.
Suggesed by "Michael S. Tsirkin" <address@hidden>
Signed-off-by: Isaku Yamahata <address@hidden>
---
hw/pci.c | 26 +++++---------------------
1 files changed, 5 insertions(+), 21 deletions(-)
diff --git a/hw/pci.c b/hw/pci.c
index 634899a..755ebad 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -558,27 +558,11 @@ static void pci_update_mappings(PCIDevice *d)
uint32_t pci_default_read_config(PCIDevice *d,
uint32_t address, int len)
{
- uint32_t val;
-
- switch(len) {
- default:
- case 4:
- if (address <= 0xfc) {
- val = pci_get_long(d->config + address);
- break;
- }
- /* fall through */
- case 2:
- if (address <= 0xfe) {
- val = pci_get_word(d->config + address);
- break;
- }
- /* fall through */
- case 1:
- val = pci_get_byte(d->config + address);
- break;
- }
- return val;
+ uint32_t val = 0;
+ assert(len == 1 || len == 2 || len == 4);
+ len = MIN(len, PCI_CONFIG_SPACE_SIZE - address);
+ memcpy(&val, d->config + address, len);
+ return le32_to_cpu(val);
}
void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l)
--
1.6.0.2
- [Qemu-devel] [PATCH V5 01/29] pci: fix PCI_DPRINTF() wrt variadic macro., (continued)
- [Qemu-devel] [PATCH V5 01/29] pci: fix PCI_DPRINTF() wrt variadic macro., Isaku Yamahata, 2009/10/09
- [Qemu-devel] [PATCH V5 10/29] pci: make pci_bar() aware of header type 1., Isaku Yamahata, 2009/10/09
- [Qemu-devel] [PATCH V5 04/29] pci: define a constant to represent a unmapped bar and use it., Isaku Yamahata, 2009/10/09
- [Qemu-devel] [PATCH V5 29/29] pci/monitor: print out bridge's filtering values and so on., Isaku Yamahata, 2009/10/09
- [Qemu-devel] [PATCH V5 14/29] pci: introduce FMT_PCIBUS for printf format for pcibus_t., Isaku Yamahata, 2009/10/09
- [Qemu-devel] [PATCH V5 05/29] pci: helper functions to access PCIDevice::config, Isaku Yamahata, 2009/10/09
- [Qemu-devel] [PATCH V5 09/29] pci: clean up of pci_default_read_config.,
Isaku Yamahata <=
- [Qemu-devel] [PATCH V5 08/29] pci: s/PCI_ADDRESS_SPACE_/PCI_BASE_ADDRESS_SPACE_/ to match pci_regs.h, Isaku Yamahata, 2009/10/09
- [Qemu-devel] [PATCH V5 28/29] pci: initialize pci config headers depending it pci header type., Isaku Yamahata, 2009/10/09