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Revert "pci: Scale MAX_PCI_REGIONS based on CONFIG_NR_DRAM_BANKS"

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This reverts commit aec4298ccb.

Unfortunately this has a dramatic impact on the pre-relocation memory
used on x86 platforms (increasing it by 2KB) since it increases the
overhead for each PCI device from 220 bytes to 412 bytes.

The offending line is in UCLASS_DRIVER(pci):

	.per_device_auto_alloc_size = sizeof(struct pci_controller),

This means that all PCI devices have the controller struct associated
with them. The solution is to move the regions[] member out of the array,
makes its size dynamic, or split UCLASS_PCI into controllers and
non-controllers, as the comment suggests.

For now, revert the commit to get things running again.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-05-07 21:41:15 -06:00 committed by Bin Meng
parent 16f4d05164
commit 62c72995e3
1 changed files with 1 additions and 5 deletions
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6
include/pci.h
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@ -546,11 +546,7 @@ extern void pci_cfgfunc_do_nothing(struct pci_controller* hose, pci_dev_t dev,
extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev,
struct pci_config_table *);
#ifdef CONFIG_NR_DRAM_BANKS
#define MAX_PCI_REGIONS (CONFIG_NR_DRAM_BANKS + 7)
#else
#define MAX_PCI_REGIONS 7
#endif
#define MAX_PCI_REGIONS 7
#define INDIRECT_TYPE_NO_PCIE_LINK 1