Release 4.14 arch/ia64/include/asm/sn/pic.h
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
*/
#ifndef _ASM_IA64_SN_PCI_PIC_H
#define _ASM_IA64_SN_PCI_PIC_H
/*
* PIC AS DEVICE ZERO
* ------------------
*
* PIC handles PCI/X busses. PCI/X requires that the 'bridge' (i.e. PIC)
* be designated as 'device 0'. That is a departure from earlier SGI
* PCI bridges. Because of that we use config space 1 to access the
* config space of the first actual PCI device on the bus.
* Here's what the PIC manual says:
*
* The current PCI-X bus specification now defines that the parent
* hosts bus bridge (PIC for example) must be device 0 on bus 0. PIC
* reduced the total number of devices from 8 to 4 and removed the
* device registers and windows, now only supporting devices 0,1,2, and
* 3. PIC did leave all 8 configuration space windows. The reason was
* there was nothing to gain by removing them. Here in lies the problem.
* The device numbering we do using 0 through 3 is unrelated to the device
* numbering which PCI-X requires in configuration space. In the past we
* correlated Configs pace and our device space 0 <-> 0, 1 <-> 1, etc.
* PCI-X requires we start a 1, not 0 and currently the PX brick
* does associate our:
*
* device 0 with configuration space window 1,
* device 1 with configuration space window 2,
* device 2 with configuration space window 3,
* device 3 with configuration space window 4.
*
* The net effect is that all config space access are off-by-one with
* relation to other per-slot accesses on the PIC.
* Here is a table that shows some of that:
*
* Internal Slot#
* |
* | 0 1 2 3
* ----------|---------------------------------------
* config | 0x21000 0x22000 0x23000 0x24000
* |
* even rrb | 0[0] n/a 1[0] n/a [] == implied even/odd
* |
* odd rrb | n/a 0[1] n/a 1[1]
* |
* int dev | 00 01 10 11
* |
* ext slot# | 1 2 3 4
* ----------|---------------------------------------
*/
#define PIC_ATE_TARGETID_SHFT 8
#define PIC_HOST_INTR_ADDR 0x0000FFFFFFFFFFFFUL
#define PIC_PCI64_ATTR_TARG_SHFT 60
/*****************************************************************************
*********************** PIC MMR structure mapping ***************************
*****************************************************************************/
/* NOTE: PIC WAR. PV#854697. PIC does not allow writes just to [31:0]
* of a 64-bit register. When writing PIC registers, always write the
* entire 64 bits.
*/
struct pic {
/* 0x000000-0x00FFFF -- Local Registers */
/* 0x000000-0x000057 -- Standard Widget Configuration */
u64 p_wid_id; /* 0x000000 */
u64 p_wid_stat; /* 0x000008 */
u64 p_wid_err_upper; /* 0x000010 */
u64 p_wid_err_lower; /* 0x000018 */
#define p_wid_err p_wid_err_lower
u64 p_wid_control; /* 0x000020 */
u64 p_wid_req_timeout; /* 0x000028 */
u64 p_wid_int_upper; /* 0x000030 */
u64 p_wid_int_lower; /* 0x000038 */
#define p_wid_int p_wid_int_lower
u64 p_wid_err_cmdword; /* 0x000040 */
u64 p_wid_llp; /* 0x000048 */
u64 p_wid_tflush; /* 0x000050 */
/* 0x000058-0x00007F -- Bridge-specific Widget Configuration */
u64 p_wid_aux_err; /* 0x000058 */
u64 p_wid_resp_upper; /* 0x000060 */
u64 p_wid_resp_lower; /* 0x000068 */
#define p_wid_resp p_wid_resp_lower
u64 p_wid_tst_pin_ctrl; /* 0x000070 */
u64 p_wid_addr_lkerr; /* 0x000078 */
/* 0x000080-0x00008F -- PMU & MAP */
u64 p_dir_map; /* 0x000080 */
u64 _pad_000088; /* 0x000088 */
/* 0x000090-0x00009F -- SSRAM */
u64 p_map_fault; /* 0x000090 */
u64 _pad_000098; /* 0x000098 */
/* 0x0000A0-0x0000AF -- Arbitration */
u64 p_arb; /* 0x0000A0 */
u64 _pad_0000A8; /* 0x0000A8 */
/* 0x0000B0-0x0000BF -- Number In A Can or ATE Parity Error */
u64 p_ate_parity_err; /* 0x0000B0 */
u64 _pad_0000B8; /* 0x0000B8 */
/* 0x0000C0-0x0000FF -- PCI/GIO */
u64 p_bus_timeout; /* 0x0000C0 */
u64 p_pci_cfg; /* 0x0000C8 */
u64 p_pci_err_upper; /* 0x0000D0 */
u64 p_pci_err_lower; /* 0x0000D8 */
#define p_pci_err p_pci_err_lower
u64 _pad_0000E0[4]; /* 0x0000{E0..F8} */
/* 0x000100-0x0001FF -- Interrupt */
u64 p_int_status; /* 0x000100 */
u64 p_int_enable; /* 0x000108 */
u64 p_int_rst_stat; /* 0x000110 */
u64 p_int_mode; /* 0x000118 */
u64 p_int_device; /* 0x000120 */
u64 p_int_host_err; /* 0x000128 */
u64 p_int_addr[8]; /* 0x0001{30,,,68} */
u64 p_err_int_view; /* 0x000170 */
u64 p_mult_int; /* 0x000178 */
u64 p_force_always[8]; /* 0x0001{80,,,B8} */
u64 p_force_pin[8]; /* 0x0001{C0,,,F8} */
/* 0x000200-0x000298 -- Device */
u64 p_device[4]; /* 0x0002{00,,,18} */
u64 _pad_000220[4]; /* 0x0002{20,,,38} */
u64 p_wr_req_buf[4]; /* 0x0002{40,,,58} */
u64 _pad_000260[4]; /* 0x0002{60,,,78} */
u64 p_rrb_map[2]; /* 0x0002{80,,,88} */
#define p_even_resp p_rrb_map[0] /* 0x000280 */
#define p_odd_resp p_rrb_map[1] /* 0x000288 */
u64 p_resp_status; /* 0x000290 */
u64 p_resp_clear; /* 0x000298 */
u64 _pad_0002A0[12]; /* 0x0002{A0..F8} */
/* 0x000300-0x0003F8 -- Buffer Address Match Registers */
struct {
u64 upper; /* 0x0003{00,,,F0} */
u64 lower; /* 0x0003{08,,,F8} */
} p_buf_addr_match[16];
/* 0x000400-0x0005FF -- Performance Monitor Registers (even only) */
struct {
u64 flush_w_touch; /* 0x000{400,,,5C0} */
u64 flush_wo_touch; /* 0x000{408,,,5C8} */
u64 inflight; /* 0x000{410,,,5D0} */
u64 prefetch; /* 0x000{418,,,5D8} */
u64 total_pci_retry; /* 0x000{420,,,5E0} */
u64 max_pci_retry; /* 0x000{428,,,5E8} */
u64 max_latency; /* 0x000{430,,,5F0} */
u64 clear_all; /* 0x000{438,,,5F8} */
} p_buf_count[8];
/* 0x000600-0x0009FF -- PCI/X registers */
u64 p_pcix_bus_err_addr; /* 0x000600 */
u64 p_pcix_bus_err_attr; /* 0x000608 */
u64 p_pcix_bus_err_data; /* 0x000610 */
u64 p_pcix_pio_split_addr; /* 0x000618 */
u64 p_pcix_pio_split_attr; /* 0x000620 */
u64 p_pcix_dma_req_err_attr; /* 0x000628 */
u64 p_pcix_dma_req_err_addr; /* 0x000630 */
u64 p_pcix_timeout; /* 0x000638 */
u64 _pad_000640[120]; /* 0x000{640,,,9F8} */
/* 0x000A00-0x000BFF -- PCI/X Read&Write Buffer */
struct {
u64 p_buf_addr; /* 0x000{A00,,,AF0} */
u64 p_buf_attr; /* 0X000{A08,,,AF8} */
} p_pcix_read_buf_64[16];
struct {
u64 p_buf_addr; /* 0x000{B00,,,BE0} */
u64 p_buf_attr; /* 0x000{B08,,,BE8} */
u64 p_buf_valid; /* 0x000{B10,,,BF0} */
u64 __pad1; /* 0x000{B18,,,BF8} */
} p_pcix_write_buf_64[8];
/* End of Local Registers -- Start of Address Map space */
char _pad_000c00[0x010000 - 0x000c00];
/* 0x010000-0x011fff -- Internal ATE RAM (Auto Parity Generation) */
u64 p_int_ate_ram[1024]; /* 0x010000-0x011fff */
/* 0x012000-0x013fff -- Internal ATE RAM (Manual Parity Generation) */
u64 p_int_ate_ram_mp[1024]; /* 0x012000-0x013fff */
char _pad_014000[0x18000 - 0x014000];
/* 0x18000-0x197F8 -- PIC Write Request Ram */
u64 p_wr_req_lower[256]; /* 0x18000 - 0x187F8 */
u64 p_wr_req_upper[256]; /* 0x18800 - 0x18FF8 */
u64 p_wr_req_parity[256]; /* 0x19000 - 0x197F8 */
char _pad_019800[0x20000 - 0x019800];
/* 0x020000-0x027FFF -- PCI Device Configuration Spaces */
union {
u8 c[0x1000 / 1]; /* 0x02{0000,,,7FFF} */
u16 s[0x1000 / 2]; /* 0x02{0000,,,7FFF} */
u32 l[0x1000 / 4]; /* 0x02{0000,,,7FFF} */
u64 d[0x1000 / 8]; /* 0x02{0000,,,7FFF} */
union {
u8 c[0x100 / 1];
u16 s[0x100 / 2];
u32 l[0x100 / 4];
u64 d[0x100 / 8];
} f[8];
} p_type0_cfg_dev[8]; /* 0x02{0000,,,7FFF} */
/* 0x028000-0x028FFF -- PCI Type 1 Configuration Space */
union {
u8 c[0x1000 / 1]; /* 0x028000-0x029000 */
u16 s[0x1000 / 2]; /* 0x028000-0x029000 */
u32 l[0x1000 / 4]; /* 0x028000-0x029000 */
u64 d[0x1000 / 8]; /* 0x028000-0x029000 */
union {
u8 c[0x100 / 1];
u16 s[0x100 / 2];
u32 l[0x100 / 4];
u64 d[0x100 / 8];
} f[8];
} p_type1_cfg; /* 0x028000-0x029000 */
char _pad_029000[0x030000-0x029000];
/* 0x030000-0x030007 -- PCI Interrupt Acknowledge Cycle */
union {
u8 c[8 / 1];
u16 s[8 / 2];
u32 l[8 / 4];
u64 d[8 / 8];
} p_pci_iack; /* 0x030000-0x030007 */
char _pad_030007[0x040000-0x030008];
/* 0x040000-0x030007 -- PCIX Special Cycle */
union {
u8 c[8 / 1];
u16 s[8 / 2];
u32 l[8 / 4];
u64 d[8 / 8];
} p_pcix_cycle; /* 0x040000-0x040007 */
};
#endif /* _ASM_IA64_SN_PCI_PIC_H */
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