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[Qemu-devel] [PATCH 4/8] pci: Replace used bitmap with capability byte m
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [PATCH 4/8] pci: Replace used bitmap with capability byte map |
Date: |
Thu, 11 Nov 2010 19:55:43 -0700 |
User-agent: |
StGIT/0.14.3 |
Capabilities are allocated in bytes, so we can track both whether
a byte is used and by what capability in the same structure.
Remove pci_reserve_capability() as there are no users.
Signed-off-by: Alex Williamson <address@hidden>
---
hw/pci.c | 16 +++++-----------
hw/pci.h | 6 ++----
2 files changed, 7 insertions(+), 15 deletions(-)
diff --git a/hw/pci.c b/hw/pci.c
index 6b2b320..e1e8a77 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -730,7 +730,7 @@ static void pci_config_alloc(PCIDevice *pci_dev)
pci_dev->config = qemu_mallocz(config_size);
pci_dev->cmask = qemu_mallocz(config_size);
pci_dev->wmask = qemu_mallocz(config_size);
- pci_dev->used = qemu_mallocz(config_size);
+ pci_dev->cap_map = qemu_mallocz(config_size);
}
static void pci_config_free(PCIDevice *pci_dev)
@@ -738,7 +738,7 @@ static void pci_config_free(PCIDevice *pci_dev)
qemu_free(pci_dev->config);
qemu_free(pci_dev->cmask);
qemu_free(pci_dev->wmask);
- qemu_free(pci_dev->used);
+ qemu_free(pci_dev->cap_map);
}
/* -1 for devfn means auto assign */
@@ -1928,7 +1928,7 @@ static int pci_find_space(PCIDevice *pdev, uint8_t size)
int offset = PCI_CONFIG_HEADER_SIZE;
int i;
for (i = PCI_CONFIG_HEADER_SIZE; i < config_size; ++i)
- if (pdev->used[i])
+ if (pdev->cap_map[i])
offset = i + 1;
else if (i - offset + 1 == size)
return offset;
@@ -2033,7 +2033,7 @@ int pci_add_capability_at_offset(PCIDevice *pdev, uint8_t
cap_id,
config[PCI_CAP_LIST_ID] = cap_id;
config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST];
pdev->config[PCI_CAPABILITY_LIST] = offset;
- memset(pdev->used + offset, 0xFF, size);
+ memset(pdev->cap_map + offset, cap_id, size);
/* Make capability read-only by default */
memset(pdev->wmask + offset, 0, size);
/* Check capability by default */
@@ -2068,7 +2068,7 @@ void pci_del_capability(PCIDevice *pdev, uint8_t cap_id,
uint8_t size)
memset(pdev->wmask + offset, 0xff, size);
/* Clear cmask as device-specific registers can't be checked */
memset(pdev->cmask + offset, 0, size);
- memset(pdev->used + offset, 0, size);
+ memset(pdev->cap_map + offset, 0, size);
if (!pdev->config[PCI_CAPABILITY_LIST]) {
pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST;
@@ -2076,12 +2076,6 @@ void pci_del_capability(PCIDevice *pdev, uint8_t cap_id,
uint8_t size)
}
}
-/* Reserve space for capability at a known offset (to call after load). */
-void pci_reserve_capability(PCIDevice *pdev, uint8_t offset, uint8_t size)
-{
- memset(pdev->used + offset, 0xff, size);
-}
-
uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id)
{
return pci_find_capability_list(pdev, cap_id, NULL);
diff --git a/hw/pci.h b/hw/pci.h
index 0712e55..2265c70 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -151,8 +151,8 @@ struct PCIDevice {
/* Used to implement R/W bytes */
uint8_t *wmask;
- /* Used to allocate config space for capabilities. */
- uint8_t *used;
+ /* Used to allocate config space and track capabilities. */
+ uint8_t *cap_map;
/* the following fields are read only */
PCIBus *bus;
@@ -239,8 +239,6 @@ int pci_add_capability_at_offset(PCIDevice *pci_dev,
uint8_t cap_id,
void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size);
-void pci_reserve_capability(PCIDevice *pci_dev, uint8_t offset, uint8_t size);
-
uint8_t pci_find_capability(PCIDevice *pci_dev, uint8_t cap_id);
uint32_t pci_default_read_config(PCIDevice *d,
[Qemu-devel] [PATCH 2/8] pci: Remove pci_enable_capability_support(), Alex Williamson, 2010/11/11
[Qemu-devel] [PATCH 4/8] pci: Replace used bitmap with capability byte map,
Alex Williamson <=
[Qemu-devel] [PATCH 3/8] device-assignment: Use PCI capabilities support, Alex Williamson, 2010/11/11
[Qemu-devel] [PATCH 7/8] pci: Pass ID for capability read/write handlers, Alex Williamson, 2010/11/11
[Qemu-devel] [PATCH 5/8] pci: Remove cap.length, cap.start, cap.supported, Alex Williamson, 2010/11/11
[Qemu-devel] [RFC PATCH 8/8] device-assignment: pass through and stub more PCI caps, Alex Williamson, 2010/11/11