3e037454bc
Add support for MSI and MSI-X interrupt handling, including the ability to choose the desired interrupt method. Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: David S. Miller <davem@davemloft.net> [bunk@kernel.org: drivers/dma/ioat_dma.c: make 3 functions static] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
131 lines
5.3 KiB
C
131 lines
5.3 KiB
C
/*
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* Copyright(c) 2004 - 2007 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The full GNU General Public License is included in this distribution in the
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* file called COPYING.
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*/
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#ifndef _IOAT_REGISTERS_H_
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#define _IOAT_REGISTERS_H_
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#define IOAT_PCI_DMACTRL_OFFSET 0x48
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#define IOAT_PCI_DMACTRL_DMA_EN 0x00000001
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#define IOAT_PCI_DMACTRL_MSI_EN 0x00000002
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/* MMIO Device Registers */
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#define IOAT_CHANCNT_OFFSET 0x00 /* 8-bit */
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#define IOAT_XFERCAP_OFFSET 0x01 /* 8-bit */
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#define IOAT_XFERCAP_4KB 12
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#define IOAT_XFERCAP_8KB 13
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#define IOAT_XFERCAP_16KB 14
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#define IOAT_XFERCAP_32KB 15
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#define IOAT_XFERCAP_32GB 0
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#define IOAT_GENCTRL_OFFSET 0x02 /* 8-bit */
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#define IOAT_GENCTRL_DEBUG_EN 0x01
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#define IOAT_INTRCTRL_OFFSET 0x03 /* 8-bit */
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#define IOAT_INTRCTRL_MASTER_INT_EN 0x01 /* Master Interrupt Enable */
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#define IOAT_INTRCTRL_INT_STATUS 0x02 /* ATTNSTATUS -or- Channel Int */
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#define IOAT_INTRCTRL_INT 0x04 /* INT_STATUS -and- MASTER_INT_EN */
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#define IOAT_INTRCTRL_MSIX_VECTOR_CONTROL 0x08 /* Enable all MSI-X vectors */
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#define IOAT_ATTNSTATUS_OFFSET 0x04 /* Each bit is a channel */
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#define IOAT_VER_OFFSET 0x08 /* 8-bit */
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#define IOAT_VER_MAJOR_MASK 0xF0
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#define IOAT_VER_MINOR_MASK 0x0F
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#define GET_IOAT_VER_MAJOR(x) ((x) & IOAT_VER_MAJOR_MASK)
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#define GET_IOAT_VER_MINOR(x) ((x) & IOAT_VER_MINOR_MASK)
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#define IOAT_PERPORTOFFSET_OFFSET 0x0A /* 16-bit */
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#define IOAT_INTRDELAY_OFFSET 0x0C /* 16-bit */
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#define IOAT_INTRDELAY_INT_DELAY_MASK 0x3FFF /* Interrupt Delay Time */
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#define IOAT_INTRDELAY_COALESE_SUPPORT 0x8000 /* Interrupt Coalesing Supported */
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#define IOAT_DEVICE_STATUS_OFFSET 0x0E /* 16-bit */
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#define IOAT_DEVICE_STATUS_DEGRADED_MODE 0x0001
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#define IOAT_CHANNEL_MMIO_SIZE 0x80 /* Each Channel MMIO space is this size */
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/* DMA Channel Registers */
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#define IOAT_CHANCTRL_OFFSET 0x00 /* 16-bit Channel Control Register */
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#define IOAT_CHANCTRL_CHANNEL_PRIORITY_MASK 0xF000
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#define IOAT_CHANCTRL_CHANNEL_IN_USE 0x0100
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#define IOAT_CHANCTRL_DESCRIPTOR_ADDR_SNOOP_CONTROL 0x0020
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#define IOAT_CHANCTRL_ERR_INT_EN 0x0010
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#define IOAT_CHANCTRL_ANY_ERR_ABORT_EN 0x0008
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#define IOAT_CHANCTRL_ERR_COMPLETION_EN 0x0004
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#define IOAT_CHANCTRL_INT_DISABLE 0x0001
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#define IOAT_DMA_COMP_OFFSET 0x02 /* 16-bit DMA channel compatability */
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#define IOAT_DMA_COMP_V1 0x0001 /* Compatability with DMA version 1 */
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#define IOAT_CHANSTS_OFFSET 0x04 /* 64-bit Channel Status Register */
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#define IOAT_CHANSTS_OFFSET_LOW 0x04
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#define IOAT_CHANSTS_OFFSET_HIGH 0x08
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#define IOAT_CHANSTS_COMPLETED_DESCRIPTOR_ADDR 0xFFFFFFFFFFFFFFC0UL
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#define IOAT_CHANSTS_SOFT_ERR 0x0000000000000010
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#define IOAT_CHANSTS_DMA_TRANSFER_STATUS 0x0000000000000007
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#define IOAT_CHANSTS_DMA_TRANSFER_STATUS_ACTIVE 0x0
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#define IOAT_CHANSTS_DMA_TRANSFER_STATUS_DONE 0x1
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#define IOAT_CHANSTS_DMA_TRANSFER_STATUS_SUSPENDED 0x2
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#define IOAT_CHANSTS_DMA_TRANSFER_STATUS_HALTED 0x3
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#define IOAT_CHAINADDR_OFFSET 0x0C /* 64-bit Descriptor Chain Address Register */
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#define IOAT_CHAINADDR_OFFSET_LOW 0x0C
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#define IOAT_CHAINADDR_OFFSET_HIGH 0x10
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#define IOAT_CHANCMD_OFFSET 0x14 /* 8-bit DMA Channel Command Register */
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#define IOAT_CHANCMD_RESET 0x20
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#define IOAT_CHANCMD_RESUME 0x10
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#define IOAT_CHANCMD_ABORT 0x08
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#define IOAT_CHANCMD_SUSPEND 0x04
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#define IOAT_CHANCMD_APPEND 0x02
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#define IOAT_CHANCMD_START 0x01
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#define IOAT_CHANCMP_OFFSET 0x18 /* 64-bit Channel Completion Address Register */
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#define IOAT_CHANCMP_OFFSET_LOW 0x18
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#define IOAT_CHANCMP_OFFSET_HIGH 0x1C
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#define IOAT_CDAR_OFFSET 0x20 /* 64-bit Current Descriptor Address Register */
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#define IOAT_CDAR_OFFSET_LOW 0x20
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#define IOAT_CDAR_OFFSET_HIGH 0x24
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#define IOAT_CHANERR_OFFSET 0x28 /* 32-bit Channel Error Register */
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#define IOAT_CHANERR_DMA_TRANSFER_SRC_ADDR_ERR 0x0001
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#define IOAT_CHANERR_DMA_TRANSFER_DEST_ADDR_ERR 0x0002
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#define IOAT_CHANERR_NEXT_DESCRIPTOR_ADDR_ERR 0x0004
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#define IOAT_CHANERR_NEXT_DESCRIPTOR_ALIGNMENT_ERR 0x0008
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#define IOAT_CHANERR_CHAIN_ADDR_VALUE_ERR 0x0010
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#define IOAT_CHANERR_CHANCMD_ERR 0x0020
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#define IOAT_CHANERR_CHIPSET_UNCORRECTABLE_DATA_INTEGRITY_ERR 0x0040
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#define IOAT_CHANERR_DMA_UNCORRECTABLE_DATA_INTEGRITY_ERR 0x0080
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#define IOAT_CHANERR_READ_DATA_ERR 0x0100
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#define IOAT_CHANERR_WRITE_DATA_ERR 0x0200
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#define IOAT_CHANERR_DESCRIPTOR_CONTROL_ERR 0x0400
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#define IOAT_CHANERR_DESCRIPTOR_LENGTH_ERR 0x0800
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#define IOAT_CHANERR_COMPLETION_ADDR_ERR 0x1000
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#define IOAT_CHANERR_INT_CONFIGURATION_ERR 0x2000
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#define IOAT_CHANERR_SOFT_ERR 0x4000
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#define IOAT_CHANERR_MASK_OFFSET 0x2C /* 32-bit Channel Error Register */
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#endif /* _IOAT_REGISTERS_H_ */
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