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mcb: Added bar descriptor support for non PCI bus MCB carrier

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Added support for the bar descriptor. This type is used for FPGAs
connect to the LPC or to a non PCI bus.

The Bar descriptor could have a maximum of 6 BARs. Each of the
devices within the FPGA could be mapped to a different BAR.
The BAR descriptor is comparable to the PCI header.

Signed-off-by: Andreas Werner <andreas.werner@men.de>
[ free bar descriptor in the non-error case ]
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andreas Werner
2016-08-26 09:34:58 +02:00
committed by Greg Kroah-Hartman
parent 73edc8f7cc
commit ffc7bb3857
2 changed files with 121 additions and 14 deletions
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9
drivers/mcb/mcb-internal.h
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@@ -112,6 +112,15 @@ struct chameleon_bdd {
u32 size;
} __packed;
struct chameleon_bar {
u32 addr;
u32 size;
};
#define BAR_CNT(x) ((x) & 0x07)
#define CHAMELEON_BAR_MAX 6
#define BAR_DESC_SIZE(x) ((x) * sizeof(struct chameleon_bar) + sizeof(__le32))
int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
void __iomem *base);