host_bridge.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef HASWELL_REGISTERS_HOST_BRIDGE_H
#define HASWELL_REGISTERS_HOST_BRIDGE_H
 
#define EPBAR           0x40
#define MCHBAR          0x48
 
#define GGC             0x50    /* GMCH Graphics Control */
#define  GGC_DISABLE_VGA_IO_DECODE      (1 << 1)
#define  GGC_IGD_MEM_IN_32MB_UNITS(x)   (((x) & 0x1f) << 3)
#define  GGC_GTT_0MB                    (0 << 8)
#define  GGC_GTT_1MB                    (1 << 8)
#define  GGC_GTT_2MB                    (2 << 8)
 
#define DEVEN           0x54    /* Device Enable */
#define  DEVEN_D7EN     (1 << 14)
#define  DEVEN_D4EN     (1 << 7)
#define  DEVEN_D3EN     (1 << 5)
#define  DEVEN_D2EN     (1 << 4)
#define  DEVEN_D1F0EN   (1 << 3)
#define  DEVEN_D1F1EN   (1 << 2)
#define  DEVEN_D1F2EN   (1 << 1)
#define  DEVEN_D0EN     (1 << 0)
 
#define PAVPC           0x58
#define DPR             0x5c
#define  DPR_EPM        (1 << 2)
#define  DPR_PRS        (1 << 1)
#define  DPR_SIZE_MASK  0xff0
 
#define PCIEXBAR        0x60
#define DMIBAR          0x68
 
#define MESEG_BASE      0x70    /* Management Engine Base */
#define MESEG_LIMIT     0x78    /* Management Engine Limit */
 
#define PAM0            0x80
#define PAM1            0x81
#define PAM2            0x82
#define PAM3            0x83
#define PAM4            0x84
#define PAM5            0x85
#define PAM6            0x86
 
#define LAC             0x87    /* Legacy Access Control */
#define SMRAM           0x88    /* System Management RAM Control */
#define  D_OPEN         (1 << 6)
#define  D_CLS          (1 << 5)
#define  D_LCK          (1 << 4)
#define  G_SMRAME       (1 << 3)
#define  C_BASE_SEG     ((0 << 2) | (1 << 1) | (0 << 0))
 
#define REMAPBASE       0x90    /* Remap base */
#define REMAPLIMIT      0x98    /* Remap limit */
#define TOM             0xa0    /* Top of DRAM in memory controller space */
#define TOUUD           0xa8    /* Top of Upper Usable DRAM */
#define BDSM            0xb0    /* Base Data Stolen Memory */
#define BGSM            0xb4    /* Base GTT Stolen Memory */
#define TSEG            0xb8    /* TSEG base */
#define TOLUD           0xbc    /* Top of Low Used Memory */
 
#define SKPAD           0xdc    /* Scratchpad Data */
 
#define CAPID0_A        0xe4
#define  CAPID_ECCDIS   (1 << 25)
#define  VTD_DISABLE    (1 << 23)
#define  CAPID_DDPCD    (1 << 14)
#define  CAPID_PDCD     (1 << 12)
#define  CAPID_DDRSZ(x) (((x) >> 19) & 0x3)
 
#define CAPID0_B        0xe8
 
#endif /* HASWELL_REGISTERS_HOST_BRIDGE_H */