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/* $OpenBSD: xbridgereg.h,v 1.7 2009/07/06 22:46:43 miod Exp $ */
/*
* Copyright (c) 2008 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* IP27/IP30 Bridge Registers
*/
#define BRIDGE_REGISTERS_SIZE 0x00030000
#define BRIDGE_NSLOTS 8
#define BRIDGE_NINTRS 8
#define BRIDGE_WIDGET_CONTROL_IO_SWAP 0x00800000
#define BRIDGE_WIDGET_CONTROL_MEM_SWAP 0x00400000
#define BRIDGE_WIDGET_CONTROL_LARGE_PAGES 0x00200000
/*
* DMA Direct Window
*
* The direct map register allows the 2GB direct window to map to
* a given widget address space. The upper bits of the XIO address,
* identifying the node to access, are provided in the low-order
* bits of the register.
*/
#define BRIDGE_DIR_MAP 0x00000084
#define BRIDGE_DIRMAP_WIDGET_SHIFT 20
#define BRIDGE_DIRMAP_ADD_512MB 0x00020000 /* add 512MB */
#define BRIDGE_DIRMAP_BASE_MASK 0x00001fff
#define BRIDGE_DIRMAP_BASE_SHIFT 31
#define BRIDGE_PCI_MEM_SPACE_BASE 0x0000000040000000ULL
#define BRIDGE_PCI_MEM_SPACE_LENGTH 0x0000000040000000ULL
#define BRIDGE_PCI_IO_SPACE_BASE 0x0000000100000000ULL
#define BRIDGE_PCI_IO_SPACE_LENGTH 0x0000000100000000ULL
#define BRIDGE_NIC 0x000000b4
#define BRIDGE_BUS_TIMEOUT 0x000000c4
#define BRIDGE_PCI_CFG 0x000000cc
#define BRIDGE_PCI_ERR_UPPER 0x000000d4
#define BRIDGE_PCI_ERR_LOWER 0x000000dc
/*
* Interrupt handling
*/
#define BRIDGE_ISR 0x00000104
#define BRIDGE_IER 0x0000010c
#define BRIDGE_ICR 0x00000114
#define BRIDGE_INT_MODE 0x0000011c
#define BRIDGE_INT_DEV 0x00000124
#define BRIDGE_INT_HOST_ERR 0x0000012c
#define BRIDGE_INT_ADDR(d) (0x00000134 + 8 * (d))
/* the following two are XBridge-only */
#define BRIDGE_INT_FORCE_ALWAYS(d) (0x00000184 + 8 * (d))
#define BRIDGE_INT_FORCE_PIN(d) (0x000001c4 + 8 * (d))
/*
* PCI Resource Mapping control
*
* There are three ways to map a given device:
* - memory mapping in the long window, at BRIDGE_PCI_MEM_SPACE_BASE,
* shared by all devices.
* - I/O mapping in the long window, at BRIDGE_PCI_IO_SPACE_BASE,
* shared by all devices, but only on widget revision 4 or later.
* - programmable memory or I/O mapping at a selectable place in the
* short window, with an 1MB granularity. The size of this
* window is 2MB for the windows at 2MB and 4MB, and 1MB onwards.
*
* ARCBios will setup mappings in the short window for us, and
* the selected address will match BAR0.
*/
#define BRIDGE_DEVICE(d) (0x00000204 + 8 * (d))
/* flags applying to the device itself */
/* byteswap DMA done through ATE */
#define BRIDGE_DEVICE_SWAP_PMU 0x00100000
/* byteswap DMA done through the direct window */
#define BRIDGE_DEVICE_SWAP_DIR 0x00080000
/* flags applying to the mapping in this devio register */
#define BRIDGE_DEVICE_PREFETCH 0x00040000
#define BRIDGE_DEVICE_PRECISE 0x00020000
#define BRIDGE_DEVICE_COHERENT 0x00010000
#define BRIDGE_DEVICE_BARRIER 0x00008000
/* byteswap PIO */
#define BRIDGE_DEVICE_SWAP 0x00002000
/* set if memory space, clear if I/O space */
#define BRIDGE_DEVICE_IO_MEM 0x00001000
#define BRIDGE_DEVICE_BASE_MASK 0x00000fff
#define BRIDGE_DEVICE_BASE_SHIFT 20
#define BRIDGE_DEVIO_BASE 0x00200000
#define BRIDGE_DEVIO_LARGE 0x00200000
#define BRIDGE_DEVIO_SHORT 0x00100000
#define BRIDGE_DEVIO_OFFS(d) \
(BRIDGE_DEVIO_BASE + \
BRIDGE_DEVIO_LARGE * ((d) < 2 ? (d) : 2) + \
BRIDGE_DEVIO_SHORT * ((d) < 2 ? 0 : (d) - 2))
#define BRIDGE_DEVIO_SIZE(d) \
((d) < 2 ? BRIDGE_DEVIO_LARGE : BRIDGE_DEVIO_SHORT)
#define BRIDGE_DEVICE_WBFLUSH(d) (0x00000244 + 8 * (d))
/*
* Read Response Buffer configuration registers
*
* There are 16 RRB, which are shared among the PCI devices.
* The following registers provide four bits per RRB, describing
* their RRB assignment.
*
* Since these four bits only assign two bits to map to a PCI slot,
* the low-order bit is implied by the RRB register: one controls the
* even-numbered PCI slots, while the other controls the odd-numbered
* PCI slots.
*/
#define BRIDGE_RRB_EVEN 0x00000284
#define BRIDGE_RRB_ODD 0x0000028c
#define RRB_VALID 0x8
#define RRB_VCHAN 0x4
#define RRB_DEVICE_MASK 0x3
#define RRB_SHIFT 4
/*
* Address Translation Entries
*/
#define BRIDGE_INTERNAL_ATE 128
#define XBRIDGE_INTERNAL_ATE 1024
#define BRIDGE_ATE_SSHIFT 12 /* 4KB */
#define BRIDGE_ATE_LSHIFT 14 /* 16KB */
#define BRIDGE_ATE_SSIZE (1ULL << BRIDGE_ATE_SSHIFT)
#define BRIDGE_ATE_LSIZE (1ULL << BRIDGE_ATE_LSHIFT)
#define BRIDGE_ATE_SMASK (BRIDGE_ATE_SSIZE - 1)
#define BRIDGE_ATE_LMASK (BRIDGE_ATE_LSIZE - 1)
#define BRIDGE_ATE(a) (0x00010000 + (a) * 8)
#define ATE_NV 0x0000000000000000ULL
#define ATE_V 0x0000000000000001ULL
#define ATE_COH 0x0000000000000002ULL
#define ATE_PRECISE 0x0000000000000004ULL
#define ATE_PREFETCH 0x0000000000000008ULL
#define ATE_BARRIER 0x0000000000000010ULL
#define ATE_BSWAP 0x0000000000000020ULL /* XBridge */
#define ATE_WIDGET_MASK 0x0000000000000f00ULL
#define ATE_WIDGET_SHIFT 8
#define ATE_ADDRESS_MASK 0x0000fffffffff000ULL
#define ATE_RMF_MASK 0x00ff000000000000ULL /* Bridge */
/*
* Configuration space
*
* Access to the first bus is done in the first area, sorted by
* device number and function number.
* Access to other buses is done in the second area, after programming
* BRIDGE_PCI_CFG to the appropriate bus and slot number.
*/
#define BRIDGE_PCI_CFG_SPACE 0x00020000
#define BRIDGE_PCI_CFG1_SPACE 0x00028000
/*
* DMA addresses
* The Bridge can do DMA either through a direct 2GB window, or through
* a 1GB translated window, using its ATE memory.
*/
#define BRIDGE_DMA_TRANSLATED_BASE 0x40000000ULL
#define XBRIDGE_DMA_TRANSLATED_SWAP 0x20000000ULL
#define ATE_ADDRESS(a,s) \
(BRIDGE_DMA_TRANSLATED_BASE + ((a) << (s)))
#define ATE_INDEX(a,s) \
(((a) - BRIDGE_DMA_TRANSLATED_BASE) >> (s))
#define BRIDGE_DMA_DIRECT_BASE 0x80000000ULL
#define BRIDGE_DMA_DIRECT_LENGTH 0x80000000ULL
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