mirror of
https://github.com/edk2-porting/linux-next.git
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ffc7bb3857
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>
128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
#ifndef __MCB_INTERNAL
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#define __MCB_INTERNAL
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#include <linux/types.h>
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#define PCI_VENDOR_ID_MEN 0x1a88
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#define PCI_DEVICE_ID_MEN_CHAMELEON 0x4d45
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#define CHAMELEONV2_MAGIC 0xabce
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#define CHAM_HEADER_SIZE 0x200
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enum chameleon_descriptor_type {
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CHAMELEON_DTYPE_GENERAL = 0x0,
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CHAMELEON_DTYPE_BRIDGE = 0x1,
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CHAMELEON_DTYPE_CPU = 0x2,
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CHAMELEON_DTYPE_BAR = 0x3,
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CHAMELEON_DTYPE_END = 0xf,
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};
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enum chameleon_bus_type {
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CHAMELEON_BUS_WISHBONE,
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CHAMELEON_BUS_AVALON,
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CHAMELEON_BUS_LPC,
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CHAMELEON_BUS_ISA,
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};
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/**
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* struct chameleon_fpga_header
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*
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* @revision: Revison of Chameleon table in FPGA
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* @model: Chameleon table model ASCII char
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* @minor: Revision minor
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* @bus_type: Bus type (usually %CHAMELEON_BUS_WISHBONE)
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* @magic: Chameleon header magic number (0xabce for version 2)
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* @reserved: Reserved
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* @filename: Filename of FPGA bitstream
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*/
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struct chameleon_fpga_header {
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u8 revision;
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char model;
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u8 minor;
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u8 bus_type;
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u16 magic;
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u16 reserved;
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/* This one has no '\0' at the end!!! */
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char filename[CHAMELEON_FILENAME_LEN];
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} __packed;
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#define HEADER_MAGIC_OFFSET 0x4
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/**
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* struct chameleon_gdd - Chameleon General Device Descriptor
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*
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* @irq: the position in the FPGA's IRQ controller vector
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* @rev: the revision of the variant's implementation
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* @var: the variant of the IP core
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* @dev: the device the IP core is
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* @dtype: device descriptor type
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* @bar: BAR offset that must be added to module offset
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* @inst: the instance number of the device, 0 is first instance
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* @group: the group the device belongs to (0 = no group)
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* @reserved: reserved
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* @offset: beginning of the address window of desired module
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* @size: size of the module's address window
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*/
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struct chameleon_gdd {
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__le32 reg1;
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__le32 reg2;
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__le32 offset;
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__le32 size;
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} __packed;
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/* GDD Register 1 fields */
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#define GDD_IRQ(x) ((x) & 0x1f)
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#define GDD_REV(x) (((x) >> 5) & 0x3f)
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#define GDD_VAR(x) (((x) >> 11) & 0x3f)
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#define GDD_DEV(x) (((x) >> 18) & 0x3ff)
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#define GDD_DTY(x) (((x) >> 28) & 0xf)
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/* GDD Register 2 fields */
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#define GDD_BAR(x) ((x) & 0x7)
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#define GDD_INS(x) (((x) >> 3) & 0x3f)
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#define GDD_GRP(x) (((x) >> 9) & 0x3f)
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/**
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* struct chameleon_bdd - Chameleon Bridge Device Descriptor
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*
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* @irq: the position in the FPGA's IRQ controller vector
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* @rev: the revision of the variant's implementation
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* @var: the variant of the IP core
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* @dev: the device the IP core is
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* @dtype: device descriptor type
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* @bar: BAR offset that must be added to module offset
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* @inst: the instance number of the device, 0 is first instance
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* @dbar: destination bar from the bus _behind_ the bridge
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* @chamoff: offset within the BAR of the source bus
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* @offset:
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* @size:
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*/
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struct chameleon_bdd {
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unsigned int irq:6;
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unsigned int rev:6;
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unsigned int var:6;
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unsigned int dev:10;
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unsigned int dtype:4;
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unsigned int bar:3;
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unsigned int inst:6;
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unsigned int dbar:3;
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unsigned int group:6;
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unsigned int reserved:14;
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u32 chamoff;
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u32 offset;
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u32 size;
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} __packed;
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struct chameleon_bar {
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u32 addr;
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u32 size;
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};
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#define BAR_CNT(x) ((x) & 0x07)
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#define CHAMELEON_BAR_MAX 6
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#define BAR_DESC_SIZE(x) ((x) * sizeof(struct chameleon_bar) + sizeof(__le32))
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int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
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void __iomem *base);
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#endif
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