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pci: consolidate pci_add_capability_at_offset() into pci_add_capability(). 

By making pci_add_capability() the special case of
pci_add_capability_at_offset() of offset = 0,
consolidate pci_add_capability_at_offset() into pci_add_capability().

Cc: Stefan Weil <weil@mail.berlios.de>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Isaku Yamahata 2010-09-06 16:46:16 +09:00 committed by Michael S. Tsirkin
parent 68f799944b
commit ca77089d2d
4 changed files with 24 additions and 21 deletions
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4
hw/eepro100.c
View File

@ -539,8 +539,8 @@ static void e100_pci_reset(EEPRO100State * s, E100PCIDeviceInfo *e100_device)
if (e100_device->power_management) {
/* Power Management Capabilities */
int cfg_offset = 0xdc;
int r = pci_add_capability_at_offset(&s->dev, PCI_CAP_ID_PM,
cfg_offset, PCI_PM_SIZEOF);
int r = pci_add_capability(&s->dev, PCI_CAP_ID_PM,
cfg_offset, PCI_PM_SIZEOF);
assert(r >= 0);
pci_set_word(pci_conf + cfg_offset + PCI_PM_PMC, 0x7e21);
#if 0 /* TODO: replace dummy code for power management emulation. */

3
hw/msix.c
View File

@ -73,7 +73,8 @@ static int msix_add_config(struct PCIDevice *pdev, unsigned short nentries,
}
pdev->msix_bar_size = new_size;
config_offset = pci_add_capability(pdev, PCI_CAP_ID_MSIX, MSIX_CAP_LENGTH);
config_offset = pci_add_capability(pdev, PCI_CAP_ID_MSIX,
0, MSIX_CAP_LENGTH);
if (config_offset < 0)
return config_offset;
config = pdev->config + config_offset;

33
hw/pci.c
View File

@ -1682,11 +1682,25 @@ static void pci_del_option_rom(PCIDevice *pdev)
pdev->rom_offset = 0;
}
/* Reserve space and add capability to the linked list in pci config space */
int pci_add_capability_at_offset(PCIDevice *pdev, uint8_t cap_id,
uint8_t offset, uint8_t size)
/*
* if !offset
* Reserve space and add capability to the linked list in pci config space
*
* if offset = 0,
* Find and reserve space and add capability to the linked list
* in pci config space */
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
uint8_t offset, uint8_t size)
{
uint8_t *config = pdev->config + offset;
uint8_t *config;
if (!offset) {
offset = pci_find_space(pdev, size);
if (!offset) {
return -ENOSPC;
}
}
config = pdev->config + offset;
config[PCI_CAP_LIST_ID] = cap_id;
config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST];
pdev->config[PCI_CAPABILITY_LIST] = offset;
@ -1699,17 +1713,6 @@ int pci_add_capability_at_offset(PCIDevice *pdev, uint8_t cap_id,
return offset;
}
/* Find and reserve space and add capability to the linked list
* in pci config space */
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
{
uint8_t offset = pci_find_space(pdev, size);
if (!offset) {
return -ENOSPC;
}
return pci_add_capability_at_offset(pdev, cap_id, offset, size);
}
/* Unlink capability from the pci config space. */
void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
{

5
hw/pci.h
View File

@ -183,9 +183,8 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num,
pcibus_t size, int type,
PCIMapIORegionFunc *map_func);
int pci_add_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size);
int pci_add_capability_at_offset(PCIDevice *pci_dev, uint8_t cap_id,
uint8_t cap_offset, uint8_t cap_size);
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
uint8_t offset, uint8_t size);
void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size);