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-rw-r--r--arch/tile/include/hv/drv_trio_intf.h195
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diff --git a/arch/tile/include/hv/drv_trio_intf.h b/arch/tile/include/hv/drv_trio_intf.h
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+/*
+ * Copyright 2012 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+/**
+ * Interface definitions for the trio driver.
+ */
+
+#ifndef _SYS_HV_DRV_TRIO_INTF_H
+#define _SYS_HV_DRV_TRIO_INTF_H
+
+#include <arch/trio.h>
+
+/** The vendor ID for all Tilera processors. */
+#define TILERA_VENDOR_ID 0x1a41
+
+/** The device ID for the Gx36 processor. */
+#define TILERA_GX36_DEV_ID 0x0200
+
+/** Device ID for our internal bridge when running as RC. */
+#define TILERA_GX36_RC_DEV_ID 0x2000
+
+/** Maximum number of TRIO interfaces. */
+#define TILEGX_NUM_TRIO 2
+
+/** Gx36 has max 3 PCIe MACs per TRIO interface. */
+#define TILEGX_TRIO_PCIES 3
+
+/** Specify port properties for a PCIe MAC. */
+struct pcie_port_property
+{
+ /** If true, the link can be configured in PCIe root complex mode. */
+ uint8_t allow_rc: 1;
+
+ /** If true, the link can be configured in PCIe endpoint mode. */
+ uint8_t allow_ep: 1;
+
+ /** If true, the link can be configured in StreamIO mode. */
+ uint8_t allow_sio: 1;
+
+ /** If true, the link is allowed to support 1-lane operation. Software
+ * will not consider it an error if the link comes up as a x1 link. */
+ uint8_t allow_x1: 1;
+
+ /** If true, the link is allowed to support 2-lane operation. Software
+ * will not consider it an error if the link comes up as a x2 link. */
+ uint8_t allow_x2: 1;
+
+ /** If true, the link is allowed to support 4-lane operation. Software
+ * will not consider it an error if the link comes up as a x4 link. */
+ uint8_t allow_x4: 1;
+
+ /** If true, the link is allowed to support 8-lane operation. Software
+ * will not consider it an error if the link comes up as a x8 link. */
+ uint8_t allow_x8: 1;
+
+ /** Reserved. */
+ uint8_t reserved: 1;
+
+};
+
+/** Configurations can be issued to configure a char stream interrupt. */
+typedef enum pcie_stream_intr_config_sel_e
+{
+ /** Interrupt configuration for memory map regions. */
+ MEM_MAP_SEL,
+
+ /** Interrupt configuration for push DMAs. */
+ PUSH_DMA_SEL,
+
+ /** Interrupt configuration for pull DMAs. */
+ PULL_DMA_SEL,
+}
+pcie_stream_intr_config_sel_t;
+
+
+/** The mmap file offset (PA) of the TRIO config region. */
+#define HV_TRIO_CONFIG_OFFSET \
+ ((unsigned long long)TRIO_MMIO_ADDRESS_SPACE__REGION_VAL_CFG << \
+ TRIO_MMIO_ADDRESS_SPACE__REGION_SHIFT)
+
+/** The maximum size of the TRIO config region. */
+#define HV_TRIO_CONFIG_SIZE \
+ (1ULL << TRIO_CFG_REGION_ADDR__REGION_SHIFT)
+
+/** Size of the config region mapped into client. We can't use
+ * TRIO_MMIO_ADDRESS_SPACE__OFFSET_WIDTH because it
+ * will require the kernel to allocate 4GB VA space
+ * from the VMALLOC region which has a total range
+ * of 4GB.
+ */
+#define HV_TRIO_CONFIG_IOREMAP_SIZE \
+ ((uint64_t) 1 << TRIO_CFG_REGION_ADDR__PROT_SHIFT)
+
+/** The mmap file offset (PA) of a scatter queue region. */
+#define HV_TRIO_SQ_OFFSET(queue) \
+ (((unsigned long long)TRIO_MMIO_ADDRESS_SPACE__REGION_VAL_MAP_SQ << \
+ TRIO_MMIO_ADDRESS_SPACE__REGION_SHIFT) | \
+ ((queue) << TRIO_MAP_SQ_REGION_ADDR__SQ_SEL_SHIFT))
+
+/** The maximum size of a scatter queue region. */
+#define HV_TRIO_SQ_SIZE \
+ (1ULL << TRIO_MAP_SQ_REGION_ADDR__SQ_SEL_SHIFT)
+
+
+/** The "hardware MMIO region" of the first PIO region. */
+#define HV_TRIO_FIRST_PIO_REGION 8
+
+/** The mmap file offset (PA) of a PIO region. */
+#define HV_TRIO_PIO_OFFSET(region) \
+ (((unsigned long long)(region) + HV_TRIO_FIRST_PIO_REGION) \
+ << TRIO_PIO_REGIONS_ADDR__REGION_SHIFT)
+
+/** The maximum size of a PIO region. */
+#define HV_TRIO_PIO_SIZE (1ULL << TRIO_PIO_REGIONS_ADDR__ADDR_WIDTH)
+
+
+/** The mmap file offset (PA) of a push DMA region. */
+#define HV_TRIO_PUSH_DMA_OFFSET(ring) \
+ (((unsigned long long)TRIO_MMIO_ADDRESS_SPACE__REGION_VAL_PUSH_DMA << \
+ TRIO_MMIO_ADDRESS_SPACE__REGION_SHIFT) | \
+ ((ring) << TRIO_PUSH_DMA_REGION_ADDR__RING_SEL_SHIFT))
+
+/** The mmap file offset (PA) of a pull DMA region. */
+#define HV_TRIO_PULL_DMA_OFFSET(ring) \
+ (((unsigned long long)TRIO_MMIO_ADDRESS_SPACE__REGION_VAL_PULL_DMA << \
+ TRIO_MMIO_ADDRESS_SPACE__REGION_SHIFT) | \
+ ((ring) << TRIO_PULL_DMA_REGION_ADDR__RING_SEL_SHIFT))
+
+/** The maximum size of a DMA region. */
+#define HV_TRIO_DMA_REGION_SIZE \
+ (1ULL << TRIO_PUSH_DMA_REGION_ADDR__RING_SEL_SHIFT)
+
+
+/** The mmap file offset (PA) of a Mem-Map interrupt region. */
+#define HV_TRIO_MEM_MAP_INTR_OFFSET(map) \
+ (((unsigned long long)TRIO_MMIO_ADDRESS_SPACE__REGION_VAL_MAP_MEM << \
+ TRIO_MMIO_ADDRESS_SPACE__REGION_SHIFT) | \
+ ((map) << TRIO_MAP_MEM_REGION_ADDR__MAP_SEL_SHIFT))
+
+/** The maximum size of a Mem-Map interrupt region. */
+#define HV_TRIO_MEM_MAP_INTR_SIZE \
+ (1ULL << TRIO_MAP_MEM_REGION_ADDR__MAP_SEL_SHIFT)
+
+
+/** A flag bit indicating a fixed resource allocation. */
+#define HV_TRIO_ALLOC_FIXED 0x01
+
+/** TRIO requires that all mappings have 4kB aligned start addresses. */
+#define HV_TRIO_PAGE_SHIFT 12
+
+/** TRIO requires that all mappings have 4kB aligned start addresses. */
+#define HV_TRIO_PAGE_SIZE (1ull << HV_TRIO_PAGE_SHIFT)
+
+
+/* Specify all PCIe port properties for a TRIO. */
+struct pcie_trio_ports_property
+{
+ struct pcie_port_property ports[TILEGX_TRIO_PCIES];
+};
+
+/* Flags indicating traffic class. */
+#define HV_TRIO_FLAG_TC_SHIFT 4
+#define HV_TRIO_FLAG_TC_RMASK 0xf
+#define HV_TRIO_FLAG_TC(N) \
+ ((((N) & HV_TRIO_FLAG_TC_RMASK) + 1) << HV_TRIO_FLAG_TC_SHIFT)
+
+/* Flags indicating virtual functions. */
+#define HV_TRIO_FLAG_VFUNC_SHIFT 8
+#define HV_TRIO_FLAG_VFUNC_RMASK 0xff
+#define HV_TRIO_FLAG_VFUNC(N) \
+ ((((N) & HV_TRIO_FLAG_VFUNC_RMASK) + 1) << HV_TRIO_FLAG_VFUNC_SHIFT)
+
+
+/* Flag indicating an ordered PIO region. */
+#define HV_TRIO_PIO_FLAG_ORDERED (1 << 16)
+
+/* Flags indicating special types of PIO regions. */
+#define HV_TRIO_PIO_FLAG_SPACE_SHIFT 17
+#define HV_TRIO_PIO_FLAG_SPACE_MASK (0x3 << HV_TRIO_PIO_FLAG_SPACE_SHIFT)
+#define HV_TRIO_PIO_FLAG_CONFIG_SPACE (0x1 << HV_TRIO_PIO_FLAG_SPACE_SHIFT)
+#define HV_TRIO_PIO_FLAG_IO_SPACE (0x2 << HV_TRIO_PIO_FLAG_SPACE_SHIFT)
+
+
+#endif /* _SYS_HV_DRV_TRIO_INTF_H */