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https://github.com/edk2-porting/linux-next.git
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3ff2dcc058
Commit68a17f0be6introduced an initialization order problem, where devices are linked against an iommu which is not yet initialized. Fix it by initializing the iommu-device before the iommu-ops are registered against the bus. Reported-by: Michael Ellerman <mpe@ellerman.id.au> Fixes:68a17f0be6('iommu/pamu: Add support for generic iommu-device') Signed-off-by: Joerg Roedel <jroedel@suse.de>
413 lines
13 KiB
C
413 lines
13 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (C) 2013 Freescale Semiconductor, Inc.
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*
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*/
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#ifndef __FSL_PAMU_H
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#define __FSL_PAMU_H
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#include <linux/iommu.h>
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#include <linux/pci.h>
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#include <asm/fsl_pamu_stash.h>
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/* Bit Field macros
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* v = bit field variable; m = mask, m##_SHIFT = shift, x = value to load
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*/
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#define set_bf(v, m, x) (v = ((v) & ~(m)) | (((x) << m##_SHIFT) & (m)))
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#define get_bf(v, m) (((v) & (m)) >> m##_SHIFT)
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/* PAMU CCSR space */
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#define PAMU_PGC 0x00000000 /* Allows all peripheral accesses */
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#define PAMU_PE 0x40000000 /* enable PAMU */
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/* PAMU_OFFSET to the next pamu space in ccsr */
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#define PAMU_OFFSET 0x1000
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#define PAMU_MMAP_REGS_BASE 0
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struct pamu_mmap_regs {
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u32 ppbah;
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u32 ppbal;
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u32 pplah;
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u32 pplal;
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u32 spbah;
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u32 spbal;
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u32 splah;
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u32 splal;
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u32 obah;
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u32 obal;
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u32 olah;
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u32 olal;
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};
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/* PAMU Error Registers */
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#define PAMU_POES1 0x0040
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#define PAMU_POES2 0x0044
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#define PAMU_POEAH 0x0048
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#define PAMU_POEAL 0x004C
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#define PAMU_AVS1 0x0050
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#define PAMU_AVS1_AV 0x1
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#define PAMU_AVS1_OTV 0x6
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#define PAMU_AVS1_APV 0x78
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#define PAMU_AVS1_WAV 0x380
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#define PAMU_AVS1_LAV 0x1c00
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#define PAMU_AVS1_GCV 0x2000
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#define PAMU_AVS1_PDV 0x4000
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#define PAMU_AV_MASK (PAMU_AVS1_AV | PAMU_AVS1_OTV | PAMU_AVS1_APV | PAMU_AVS1_WAV \
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| PAMU_AVS1_LAV | PAMU_AVS1_GCV | PAMU_AVS1_PDV)
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#define PAMU_AVS1_LIODN_SHIFT 16
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#define PAMU_LAV_LIODN_NOT_IN_PPAACT 0x400
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#define PAMU_AVS2 0x0054
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#define PAMU_AVAH 0x0058
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#define PAMU_AVAL 0x005C
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#define PAMU_EECTL 0x0060
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#define PAMU_EEDIS 0x0064
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#define PAMU_EEINTEN 0x0068
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#define PAMU_EEDET 0x006C
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#define PAMU_EEATTR 0x0070
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#define PAMU_EEAHI 0x0074
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#define PAMU_EEALO 0x0078
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#define PAMU_EEDHI 0X007C
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#define PAMU_EEDLO 0x0080
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#define PAMU_EECC 0x0084
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#define PAMU_UDAD 0x0090
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/* PAMU Revision Registers */
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#define PAMU_PR1 0x0BF8
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#define PAMU_PR2 0x0BFC
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/* PAMU version mask */
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#define PAMU_PR1_MASK 0xffff
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/* PAMU Capabilities Registers */
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#define PAMU_PC1 0x0C00
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#define PAMU_PC2 0x0C04
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#define PAMU_PC3 0x0C08
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#define PAMU_PC4 0x0C0C
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/* PAMU Control Register */
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#define PAMU_PC 0x0C10
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/* PAMU control defs */
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#define PAMU_CONTROL 0x0C10
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#define PAMU_PC_PGC 0x80000000 /* PAMU gate closed bit */
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#define PAMU_PC_PE 0x40000000 /* PAMU enable bit */
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#define PAMU_PC_SPCC 0x00000010 /* sPAACE cache enable */
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#define PAMU_PC_PPCC 0x00000001 /* pPAACE cache enable */
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#define PAMU_PC_OCE 0x00001000 /* OMT cache enable */
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#define PAMU_PFA1 0x0C14
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#define PAMU_PFA2 0x0C18
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#define PAMU_PC2_MLIODN(X) ((X) >> 16)
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#define PAMU_PC3_MWCE(X) (((X) >> 21) & 0xf)
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/* PAMU Interrupt control and Status Register */
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#define PAMU_PICS 0x0C1C
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#define PAMU_ACCESS_VIOLATION_STAT 0x8
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#define PAMU_ACCESS_VIOLATION_ENABLE 0x4
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/* PAMU Debug Registers */
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#define PAMU_PD1 0x0F00
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#define PAMU_PD2 0x0F04
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#define PAMU_PD3 0x0F08
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#define PAMU_PD4 0x0F0C
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#define PAACE_AP_PERMS_DENIED 0x0
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#define PAACE_AP_PERMS_QUERY 0x1
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#define PAACE_AP_PERMS_UPDATE 0x2
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#define PAACE_AP_PERMS_ALL 0x3
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#define PAACE_DD_TO_HOST 0x0
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#define PAACE_DD_TO_IO 0x1
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#define PAACE_PT_PRIMARY 0x0
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#define PAACE_PT_SECONDARY 0x1
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#define PAACE_V_INVALID 0x0
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#define PAACE_V_VALID 0x1
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#define PAACE_MW_SUBWINDOWS 0x1
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#define PAACE_WSE_4K 0xB
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#define PAACE_WSE_8K 0xC
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#define PAACE_WSE_16K 0xD
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#define PAACE_WSE_32K 0xE
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#define PAACE_WSE_64K 0xF
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#define PAACE_WSE_128K 0x10
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#define PAACE_WSE_256K 0x11
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#define PAACE_WSE_512K 0x12
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#define PAACE_WSE_1M 0x13
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#define PAACE_WSE_2M 0x14
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#define PAACE_WSE_4M 0x15
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#define PAACE_WSE_8M 0x16
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#define PAACE_WSE_16M 0x17
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#define PAACE_WSE_32M 0x18
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#define PAACE_WSE_64M 0x19
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#define PAACE_WSE_128M 0x1A
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#define PAACE_WSE_256M 0x1B
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#define PAACE_WSE_512M 0x1C
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#define PAACE_WSE_1G 0x1D
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#define PAACE_WSE_2G 0x1E
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#define PAACE_WSE_4G 0x1F
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#define PAACE_DID_PCI_EXPRESS_1 0x00
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#define PAACE_DID_PCI_EXPRESS_2 0x01
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#define PAACE_DID_PCI_EXPRESS_3 0x02
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#define PAACE_DID_PCI_EXPRESS_4 0x03
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#define PAACE_DID_LOCAL_BUS 0x04
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#define PAACE_DID_SRIO 0x0C
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#define PAACE_DID_MEM_1 0x10
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#define PAACE_DID_MEM_2 0x11
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#define PAACE_DID_MEM_3 0x12
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#define PAACE_DID_MEM_4 0x13
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#define PAACE_DID_MEM_1_2 0x14
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#define PAACE_DID_MEM_3_4 0x15
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#define PAACE_DID_MEM_1_4 0x16
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#define PAACE_DID_BM_SW_PORTAL 0x18
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#define PAACE_DID_PAMU 0x1C
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#define PAACE_DID_CAAM 0x21
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#define PAACE_DID_QM_SW_PORTAL 0x3C
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#define PAACE_DID_CORE0_INST 0x80
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#define PAACE_DID_CORE0_DATA 0x81
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#define PAACE_DID_CORE1_INST 0x82
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#define PAACE_DID_CORE1_DATA 0x83
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#define PAACE_DID_CORE2_INST 0x84
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#define PAACE_DID_CORE2_DATA 0x85
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#define PAACE_DID_CORE3_INST 0x86
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#define PAACE_DID_CORE3_DATA 0x87
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#define PAACE_DID_CORE4_INST 0x88
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#define PAACE_DID_CORE4_DATA 0x89
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#define PAACE_DID_CORE5_INST 0x8A
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#define PAACE_DID_CORE5_DATA 0x8B
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#define PAACE_DID_CORE6_INST 0x8C
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#define PAACE_DID_CORE6_DATA 0x8D
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#define PAACE_DID_CORE7_INST 0x8E
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#define PAACE_DID_CORE7_DATA 0x8F
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#define PAACE_DID_BROADCAST 0xFF
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#define PAACE_ATM_NO_XLATE 0x00
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#define PAACE_ATM_WINDOW_XLATE 0x01
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#define PAACE_ATM_PAGE_XLATE 0x02
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#define PAACE_ATM_WIN_PG_XLATE (PAACE_ATM_WINDOW_XLATE | PAACE_ATM_PAGE_XLATE)
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#define PAACE_OTM_NO_XLATE 0x00
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#define PAACE_OTM_IMMEDIATE 0x01
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#define PAACE_OTM_INDEXED 0x02
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#define PAACE_OTM_RESERVED 0x03
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#define PAACE_M_COHERENCE_REQ 0x01
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#define PAACE_PID_0 0x0
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#define PAACE_PID_1 0x1
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#define PAACE_PID_2 0x2
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#define PAACE_PID_3 0x3
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#define PAACE_PID_4 0x4
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#define PAACE_PID_5 0x5
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#define PAACE_PID_6 0x6
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#define PAACE_PID_7 0x7
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#define PAACE_TCEF_FORMAT0_8B 0x00
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#define PAACE_TCEF_FORMAT1_RSVD 0x01
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/*
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* Hard coded value for the PAACT size to accommodate
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* maximum LIODN value generated by u-boot.
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*/
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#define PAACE_NUMBER_ENTRIES 0x500
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/* Hard coded value for the SPAACT size */
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#define SPAACE_NUMBER_ENTRIES 0x800
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#define OME_NUMBER_ENTRIES 16
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/* PAACE Bit Field Defines */
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#define PPAACE_AF_WBAL 0xfffff000
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#define PPAACE_AF_WBAL_SHIFT 12
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#define PPAACE_AF_WSE 0x00000fc0
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#define PPAACE_AF_WSE_SHIFT 6
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#define PPAACE_AF_MW 0x00000020
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#define PPAACE_AF_MW_SHIFT 5
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#define SPAACE_AF_LIODN 0xffff0000
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#define SPAACE_AF_LIODN_SHIFT 16
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#define PAACE_AF_AP 0x00000018
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#define PAACE_AF_AP_SHIFT 3
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#define PAACE_AF_DD 0x00000004
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#define PAACE_AF_DD_SHIFT 2
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#define PAACE_AF_PT 0x00000002
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#define PAACE_AF_PT_SHIFT 1
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#define PAACE_AF_V 0x00000001
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#define PAACE_AF_V_SHIFT 0
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#define PAACE_DA_HOST_CR 0x80
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#define PAACE_DA_HOST_CR_SHIFT 7
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#define PAACE_IA_CID 0x00FF0000
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#define PAACE_IA_CID_SHIFT 16
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#define PAACE_IA_WCE 0x000000F0
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#define PAACE_IA_WCE_SHIFT 4
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#define PAACE_IA_ATM 0x0000000C
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#define PAACE_IA_ATM_SHIFT 2
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#define PAACE_IA_OTM 0x00000003
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#define PAACE_IA_OTM_SHIFT 0
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#define PAACE_WIN_TWBAL 0xfffff000
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#define PAACE_WIN_TWBAL_SHIFT 12
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#define PAACE_WIN_SWSE 0x00000fc0
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#define PAACE_WIN_SWSE_SHIFT 6
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/* PAMU Data Structures */
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/* primary / secondary paact structure */
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struct paace {
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/* PAACE Offset 0x00 */
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u32 wbah; /* only valid for Primary PAACE */
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u32 addr_bitfields; /* See P/S PAACE_AF_* */
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/* PAACE Offset 0x08 */
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/* Interpretation of first 32 bits dependent on DD above */
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union {
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struct {
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/* Destination ID, see PAACE_DID_* defines */
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u8 did;
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/* Partition ID */
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u8 pid;
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/* Snoop ID */
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u8 snpid;
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/* coherency_required : 1 reserved : 7 */
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u8 coherency_required; /* See PAACE_DA_* */
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} to_host;
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struct {
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/* Destination ID, see PAACE_DID_* defines */
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u8 did;
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u8 reserved1;
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u16 reserved2;
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} to_io;
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} domain_attr;
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/* Implementation attributes + window count + address & operation translation modes */
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u32 impl_attr; /* See PAACE_IA_* */
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/* PAACE Offset 0x10 */
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/* Translated window base address */
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u32 twbah;
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u32 win_bitfields; /* See PAACE_WIN_* */
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/* PAACE Offset 0x18 */
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/* first secondary paace entry */
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u32 fspi; /* only valid for Primary PAACE */
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union {
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struct {
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u8 ioea;
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u8 moea;
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u8 ioeb;
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u8 moeb;
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} immed_ot;
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struct {
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u16 reserved;
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u16 omi;
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} index_ot;
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} op_encode;
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/* PAACE Offsets 0x20-0x38 */
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u32 reserved[8]; /* not currently implemented */
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};
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/* OME : Operation mapping entry
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* MOE : Mapped Operation Encodings
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* The operation mapping table is table containing operation mapping entries (OME).
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* The index of a particular OME is programmed in the PAACE entry for translation
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* in bound I/O operations corresponding to an LIODN. The OMT is used for translation
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* specifically in case of the indexed translation mode. Each OME contains a 128
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* byte mapped operation encoding (MOE), where each byte represents an MOE.
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*/
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#define NUM_MOE 128
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struct ome {
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u8 moe[NUM_MOE];
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} __packed;
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#define PAACT_SIZE (sizeof(struct paace) * PAACE_NUMBER_ENTRIES)
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#define SPAACT_SIZE (sizeof(struct paace) * SPAACE_NUMBER_ENTRIES)
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#define OMT_SIZE (sizeof(struct ome) * OME_NUMBER_ENTRIES)
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#define PAMU_PAGE_SHIFT 12
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#define PAMU_PAGE_SIZE 4096ULL
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#define IOE_READ 0x00
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#define IOE_READ_IDX 0x00
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#define IOE_WRITE 0x81
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#define IOE_WRITE_IDX 0x01
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#define IOE_EREAD0 0x82 /* Enhanced read type 0 */
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#define IOE_EREAD0_IDX 0x02 /* Enhanced read type 0 */
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#define IOE_EWRITE0 0x83 /* Enhanced write type 0 */
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#define IOE_EWRITE0_IDX 0x03 /* Enhanced write type 0 */
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#define IOE_DIRECT0 0x84 /* Directive type 0 */
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#define IOE_DIRECT0_IDX 0x04 /* Directive type 0 */
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#define IOE_EREAD1 0x85 /* Enhanced read type 1 */
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#define IOE_EREAD1_IDX 0x05 /* Enhanced read type 1 */
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#define IOE_EWRITE1 0x86 /* Enhanced write type 1 */
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#define IOE_EWRITE1_IDX 0x06 /* Enhanced write type 1 */
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#define IOE_DIRECT1 0x87 /* Directive type 1 */
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#define IOE_DIRECT1_IDX 0x07 /* Directive type 1 */
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#define IOE_RAC 0x8c /* Read with Atomic clear */
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#define IOE_RAC_IDX 0x0c /* Read with Atomic clear */
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#define IOE_RAS 0x8d /* Read with Atomic set */
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#define IOE_RAS_IDX 0x0d /* Read with Atomic set */
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#define IOE_RAD 0x8e /* Read with Atomic decrement */
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#define IOE_RAD_IDX 0x0e /* Read with Atomic decrement */
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#define IOE_RAI 0x8f /* Read with Atomic increment */
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#define IOE_RAI_IDX 0x0f /* Read with Atomic increment */
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#define EOE_READ 0x00
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#define EOE_WRITE 0x01
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#define EOE_RAC 0x0c /* Read with Atomic clear */
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#define EOE_RAS 0x0d /* Read with Atomic set */
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#define EOE_RAD 0x0e /* Read with Atomic decrement */
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#define EOE_RAI 0x0f /* Read with Atomic increment */
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#define EOE_LDEC 0x10 /* Load external cache */
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#define EOE_LDECL 0x11 /* Load external cache with stash lock */
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#define EOE_LDECPE 0x12 /* Load external cache with preferred exclusive */
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#define EOE_LDECPEL 0x13 /* Load external cache with preferred exclusive and lock */
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#define EOE_LDECFE 0x14 /* Load external cache with forced exclusive */
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#define EOE_LDECFEL 0x15 /* Load external cache with forced exclusive and lock */
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#define EOE_RSA 0x16 /* Read with stash allocate */
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#define EOE_RSAU 0x17 /* Read with stash allocate and unlock */
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#define EOE_READI 0x18 /* Read with invalidate */
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#define EOE_RWNITC 0x19 /* Read with no intention to cache */
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#define EOE_WCI 0x1a /* Write cache inhibited */
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#define EOE_WWSA 0x1b /* Write with stash allocate */
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#define EOE_WWSAL 0x1c /* Write with stash allocate and lock */
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#define EOE_WWSAO 0x1d /* Write with stash allocate only */
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#define EOE_WWSAOL 0x1e /* Write with stash allocate only and lock */
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#define EOE_VALID 0x80
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/* Function prototypes */
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int pamu_domain_init(void);
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int pamu_enable_liodn(int liodn);
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int pamu_disable_liodn(int liodn);
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void pamu_free_subwins(int liodn);
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int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size,
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u32 omi, unsigned long rpn, u32 snoopid, uint32_t stashid,
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u32 subwin_cnt, int prot);
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int pamu_config_spaace(int liodn, u32 subwin_cnt, u32 subwin_addr,
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phys_addr_t subwin_size, u32 omi, unsigned long rpn,
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uint32_t snoopid, u32 stashid, int enable, int prot);
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u32 get_stash_id(u32 stash_dest_hint, u32 vcpu);
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void get_ome_index(u32 *omi_index, struct device *dev);
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int pamu_update_paace_stash(int liodn, u32 subwin, u32 value);
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int pamu_disable_spaace(int liodn, u32 subwin);
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u32 pamu_get_max_subwin_cnt(void);
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#endif /* __FSL_PAMU_H */
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