diff options
Diffstat (limited to 'drivers/iommu/fsl_pamu.h')
| -rw-r--r-- | drivers/iommu/fsl_pamu.h | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/drivers/iommu/fsl_pamu.h b/drivers/iommu/fsl_pamu.h new file mode 100644 index 000000000..c3434f29c --- /dev/null +++ b/drivers/iommu/fsl_pamu.h @@ -0,0 +1,412 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Copyright (C) 2013 Freescale Semiconductor, Inc. + * + */ + +#ifndef __FSL_PAMU_H +#define __FSL_PAMU_H + +#include <linux/iommu.h> +#include <linux/pci.h> + +#include <asm/fsl_pamu_stash.h> + +/* Bit Field macros + * v = bit field variable; m = mask, m##_SHIFT = shift, x = value to load + */ +#define set_bf(v, m, x) (v = ((v) & ~(m)) | (((x) << m##_SHIFT) & (m))) +#define get_bf(v, m) (((v) & (m)) >> m##_SHIFT) + +/* PAMU CCSR space */ +#define PAMU_PGC 0x00000000 /* Allows all peripheral accesses */ +#define PAMU_PE 0x40000000 /* enable PAMU */ + +/* PAMU_OFFSET to the next pamu space in ccsr */ +#define PAMU_OFFSET 0x1000 + +#define PAMU_MMAP_REGS_BASE 0 + +struct pamu_mmap_regs { + u32 ppbah; + u32 ppbal; + u32 pplah; + u32 pplal; + u32 spbah; + u32 spbal; + u32 splah; + u32 splal; + u32 obah; + u32 obal; + u32 olah; + u32 olal; +}; + +/* PAMU Error Registers */ +#define PAMU_POES1 0x0040 +#define PAMU_POES2 0x0044 +#define PAMU_POEAH 0x0048 +#define PAMU_POEAL 0x004C +#define PAMU_AVS1 0x0050 +#define PAMU_AVS1_AV 0x1 +#define PAMU_AVS1_OTV 0x6 +#define PAMU_AVS1_APV 0x78 +#define PAMU_AVS1_WAV 0x380 +#define PAMU_AVS1_LAV 0x1c00 +#define PAMU_AVS1_GCV 0x2000 +#define PAMU_AVS1_PDV 0x4000 +#define PAMU_AV_MASK (PAMU_AVS1_AV | PAMU_AVS1_OTV | PAMU_AVS1_APV | PAMU_AVS1_WAV \ + | PAMU_AVS1_LAV | PAMU_AVS1_GCV | PAMU_AVS1_PDV) +#define PAMU_AVS1_LIODN_SHIFT 16 +#define PAMU_LAV_LIODN_NOT_IN_PPAACT 0x400 + +#define PAMU_AVS2 0x0054 +#define PAMU_AVAH 0x0058 +#define PAMU_AVAL 0x005C +#define PAMU_EECTL 0x0060 +#define PAMU_EEDIS 0x0064 +#define PAMU_EEINTEN 0x0068 +#define PAMU_EEDET 0x006C +#define PAMU_EEATTR 0x0070 +#define PAMU_EEAHI 0x0074 +#define PAMU_EEALO 0x0078 +#define PAMU_EEDHI 0X007C +#define PAMU_EEDLO 0x0080 +#define PAMU_EECC 0x0084 +#define PAMU_UDAD 0x0090 + +/* PAMU Revision Registers */ +#define PAMU_PR1 0x0BF8 +#define PAMU_PR2 0x0BFC + +/* PAMU version mask */ +#define PAMU_PR1_MASK 0xffff + +/* PAMU Capabilities Registers */ +#define PAMU_PC1 0x0C00 +#define PAMU_PC2 0x0C04 +#define PAMU_PC3 0x0C08 +#define PAMU_PC4 0x0C0C + +/* PAMU Control Register */ +#define PAMU_PC 0x0C10 + +/* PAMU control defs */ +#define PAMU_CONTROL 0x0C10 +#define PAMU_PC_PGC 0x80000000 /* PAMU gate closed bit */ +#define PAMU_PC_PE 0x40000000 /* PAMU enable bit */ +#define PAMU_PC_SPCC 0x00000010 /* sPAACE cache enable */ +#define PAMU_PC_PPCC 0x00000001 /* pPAACE cache enable */ +#define PAMU_PC_OCE 0x00001000 /* OMT cache enable */ + +#define PAMU_PFA1 0x0C14 +#define PAMU_PFA2 0x0C18 + +#define PAMU_PC2_MLIODN(X) ((X) >> 16) +#define PAMU_PC3_MWCE(X) (((X) >> 21) & 0xf) + +/* PAMU Interrupt control and Status Register */ +#define PAMU_PICS 0x0C1C +#define PAMU_ACCESS_VIOLATION_STAT 0x8 +#define PAMU_ACCESS_VIOLATION_ENABLE 0x4 + +/* PAMU Debug Registers */ +#define PAMU_PD1 0x0F00 +#define PAMU_PD2 0x0F04 +#define PAMU_PD3 0x0F08 +#define PAMU_PD4 0x0F0C + +#define PAACE_AP_PERMS_DENIED 0x0 +#define PAACE_AP_PERMS_QUERY 0x1 +#define PAACE_AP_PERMS_UPDATE 0x2 +#define PAACE_AP_PERMS_ALL 0x3 + +#define PAACE_DD_TO_HOST 0x0 +#define PAACE_DD_TO_IO 0x1 +#define PAACE_PT_PRIMARY 0x0 +#define PAACE_PT_SECONDARY 0x1 +#define PAACE_V_INVALID 0x0 +#define PAACE_V_VALID 0x1 +#define PAACE_MW_SUBWINDOWS 0x1 + +#define PAACE_WSE_4K 0xB +#define PAACE_WSE_8K 0xC +#define PAACE_WSE_16K 0xD +#define PAACE_WSE_32K 0xE +#define PAACE_WSE_64K 0xF +#define PAACE_WSE_128K 0x10 +#define PAACE_WSE_256K 0x11 +#define PAACE_WSE_512K 0x12 +#define PAACE_WSE_1M 0x13 +#define PAACE_WSE_2M 0x14 +#define PAACE_WSE_4M 0x15 +#define PAACE_WSE_8M 0x16 +#define PAACE_WSE_16M 0x17 +#define PAACE_WSE_32M 0x18 +#define PAACE_WSE_64M 0x19 +#define PAACE_WSE_128M 0x1A +#define PAACE_WSE_256M 0x1B +#define PAACE_WSE_512M 0x1C +#define PAACE_WSE_1G 0x1D +#define PAACE_WSE_2G 0x1E +#define PAACE_WSE_4G 0x1F + +#define PAACE_DID_PCI_EXPRESS_1 0x00 +#define PAACE_DID_PCI_EXPRESS_2 0x01 +#define PAACE_DID_PCI_EXPRESS_3 0x02 +#define PAACE_DID_PCI_EXPRESS_4 0x03 +#define PAACE_DID_LOCAL_BUS 0x04 +#define PAACE_DID_SRIO 0x0C +#define PAACE_DID_MEM_1 0x10 +#define PAACE_DID_MEM_2 0x11 +#define PAACE_DID_MEM_3 0x12 +#define PAACE_DID_MEM_4 0x13 +#define PAACE_DID_MEM_1_2 0x14 +#define PAACE_DID_MEM_3_4 0x15 +#define PAACE_DID_MEM_1_4 0x16 +#define PAACE_DID_BM_SW_PORTAL 0x18 +#define PAACE_DID_PAMU 0x1C +#define PAACE_DID_CAAM 0x21 +#define PAACE_DID_QM_SW_PORTAL 0x3C +#define PAACE_DID_CORE0_INST 0x80 +#define PAACE_DID_CORE0_DATA 0x81 +#define PAACE_DID_CORE1_INST 0x82 +#define PAACE_DID_CORE1_DATA 0x83 +#define PAACE_DID_CORE2_INST 0x84 +#define PAACE_DID_CORE2_DATA 0x85 +#define PAACE_DID_CORE3_INST 0x86 +#define PAACE_DID_CORE3_DATA 0x87 +#define PAACE_DID_CORE4_INST 0x88 +#define PAACE_DID_CORE4_DATA 0x89 +#define PAACE_DID_CORE5_INST 0x8A +#define PAACE_DID_CORE5_DATA 0x8B +#define PAACE_DID_CORE6_INST 0x8C +#define PAACE_DID_CORE6_DATA 0x8D +#define PAACE_DID_CORE7_INST 0x8E +#define PAACE_DID_CORE7_DATA 0x8F +#define PAACE_DID_BROADCAST 0xFF + +#define PAACE_ATM_NO_XLATE 0x00 +#define PAACE_ATM_WINDOW_XLATE 0x01 +#define PAACE_ATM_PAGE_XLATE 0x02 +#define PAACE_ATM_WIN_PG_XLATE (PAACE_ATM_WINDOW_XLATE | PAACE_ATM_PAGE_XLATE) +#define PAACE_OTM_NO_XLATE 0x00 +#define PAACE_OTM_IMMEDIATE 0x01 +#define PAACE_OTM_INDEXED 0x02 +#define PAACE_OTM_RESERVED 0x03 + +#define PAACE_M_COHERENCE_REQ 0x01 + +#define PAACE_PID_0 0x0 +#define PAACE_PID_1 0x1 +#define PAACE_PID_2 0x2 +#define PAACE_PID_3 0x3 +#define PAACE_PID_4 0x4 +#define PAACE_PID_5 0x5 +#define PAACE_PID_6 0x6 +#define PAACE_PID_7 0x7 + +#define PAACE_TCEF_FORMAT0_8B 0x00 +#define PAACE_TCEF_FORMAT1_RSVD 0x01 +/* + * Hard coded value for the PAACT size to accommodate + * maximum LIODN value generated by u-boot. + */ +#define PAACE_NUMBER_ENTRIES 0x500 +/* Hard coded value for the SPAACT size */ +#define SPAACE_NUMBER_ENTRIES 0x800 + +#define OME_NUMBER_ENTRIES 16 + +/* PAACE Bit Field Defines */ +#define PPAACE_AF_WBAL 0xfffff000 +#define PPAACE_AF_WBAL_SHIFT 12 +#define PPAACE_AF_WSE 0x00000fc0 +#define PPAACE_AF_WSE_SHIFT 6 +#define PPAACE_AF_MW 0x00000020 +#define PPAACE_AF_MW_SHIFT 5 + +#define SPAACE_AF_LIODN 0xffff0000 +#define SPAACE_AF_LIODN_SHIFT 16 + +#define PAACE_AF_AP 0x00000018 +#define PAACE_AF_AP_SHIFT 3 +#define PAACE_AF_DD 0x00000004 +#define PAACE_AF_DD_SHIFT 2 +#define PAACE_AF_PT 0x00000002 +#define PAACE_AF_PT_SHIFT 1 +#define PAACE_AF_V 0x00000001 +#define PAACE_AF_V_SHIFT 0 + +#define PAACE_DA_HOST_CR 0x80 +#define PAACE_DA_HOST_CR_SHIFT 7 + +#define PAACE_IA_CID 0x00FF0000 +#define PAACE_IA_CID_SHIFT 16 +#define PAACE_IA_WCE 0x000000F0 +#define PAACE_IA_WCE_SHIFT 4 +#define PAACE_IA_ATM 0x0000000C +#define PAACE_IA_ATM_SHIFT 2 +#define PAACE_IA_OTM 0x00000003 +#define PAACE_IA_OTM_SHIFT 0 + +#define PAACE_WIN_TWBAL 0xfffff000 +#define PAACE_WIN_TWBAL_SHIFT 12 +#define PAACE_WIN_SWSE 0x00000fc0 +#define PAACE_WIN_SWSE_SHIFT 6 + +/* PAMU Data Structures */ +/* primary / secondary paact structure */ +struct paace { + /* PAACE Offset 0x00 */ + u32 wbah; /* only valid for Primary PAACE */ + u32 addr_bitfields; /* See P/S PAACE_AF_* */ + + /* PAACE Offset 0x08 */ + /* Interpretation of first 32 bits dependent on DD above */ + union { + struct { + /* Destination ID, see PAACE_DID_* defines */ + u8 did; + /* Partition ID */ + u8 pid; + /* Snoop ID */ + u8 snpid; + /* coherency_required : 1 reserved : 7 */ + u8 coherency_required; /* See PAACE_DA_* */ + } to_host; + struct { + /* Destination ID, see PAACE_DID_* defines */ + u8 did; + u8 reserved1; + u16 reserved2; + } to_io; + } domain_attr; + + /* Implementation attributes + window count + address & operation translation modes */ + u32 impl_attr; /* See PAACE_IA_* */ + + /* PAACE Offset 0x10 */ + /* Translated window base address */ + u32 twbah; + u32 win_bitfields; /* See PAACE_WIN_* */ + + /* PAACE Offset 0x18 */ + /* first secondary paace entry */ + u32 fspi; /* only valid for Primary PAACE */ + union { + struct { + u8 ioea; + u8 moea; + u8 ioeb; + u8 moeb; + } immed_ot; + struct { + u16 reserved; + u16 omi; + } index_ot; + } op_encode; + + /* PAACE Offsets 0x20-0x38 */ + u32 reserved[8]; /* not currently implemented */ +}; + +/* OME : Operation mapping entry + * MOE : Mapped Operation Encodings + * The operation mapping table is table containing operation mapping entries (OME). + * The index of a particular OME is programmed in the PAACE entry for translation + * in bound I/O operations corresponding to an LIODN. The OMT is used for translation + * specifically in case of the indexed translation mode. Each OME contains a 128 + * byte mapped operation encoding (MOE), where each byte represents an MOE. + */ +#define NUM_MOE 128 +struct ome { + u8 moe[NUM_MOE]; +} __packed; + +#define PAACT_SIZE (sizeof(struct paace) * PAACE_NUMBER_ENTRIES) +#define SPAACT_SIZE (sizeof(struct paace) * SPAACE_NUMBER_ENTRIES) +#define OMT_SIZE (sizeof(struct ome) * OME_NUMBER_ENTRIES) + +#define PAMU_PAGE_SHIFT 12 +#define PAMU_PAGE_SIZE 4096ULL + +#define IOE_READ 0x00 +#define IOE_READ_IDX 0x00 +#define IOE_WRITE 0x81 +#define IOE_WRITE_IDX 0x01 +#define IOE_EREAD0 0x82 /* Enhanced read type 0 */ +#define IOE_EREAD0_IDX 0x02 /* Enhanced read type 0 */ +#define IOE_EWRITE0 0x83 /* Enhanced write type 0 */ +#define IOE_EWRITE0_IDX 0x03 /* Enhanced write type 0 */ +#define IOE_DIRECT0 0x84 /* Directive type 0 */ +#define IOE_DIRECT0_IDX 0x04 /* Directive type 0 */ +#define IOE_EREAD1 0x85 /* Enhanced read type 1 */ +#define IOE_EREAD1_IDX 0x05 /* Enhanced read type 1 */ +#define IOE_EWRITE1 0x86 /* Enhanced write type 1 */ +#define IOE_EWRITE1_IDX 0x06 /* Enhanced write type 1 */ +#define IOE_DIRECT1 0x87 /* Directive type 1 */ +#define IOE_DIRECT1_IDX 0x07 /* Directive type 1 */ +#define IOE_RAC 0x8c /* Read with Atomic clear */ +#define IOE_RAC_IDX 0x0c /* Read with Atomic clear */ +#define IOE_RAS 0x8d /* Read with Atomic set */ +#define IOE_RAS_IDX 0x0d /* Read with Atomic set */ +#define IOE_RAD 0x8e /* Read with Atomic decrement */ +#define IOE_RAD_IDX 0x0e /* Read with Atomic decrement */ +#define IOE_RAI 0x8f /* Read with Atomic increment */ +#define IOE_RAI_IDX 0x0f /* Read with Atomic increment */ + +#define EOE_READ 0x00 +#define EOE_WRITE 0x01 +#define EOE_RAC 0x0c /* Read with Atomic clear */ +#define EOE_RAS 0x0d /* Read with Atomic set */ +#define EOE_RAD 0x0e /* Read with Atomic decrement */ +#define EOE_RAI 0x0f /* Read with Atomic increment */ +#define EOE_LDEC 0x10 /* Load external cache */ +#define EOE_LDECL 0x11 /* Load external cache with stash lock */ +#define EOE_LDECPE 0x12 /* Load external cache with preferred exclusive */ +#define EOE_LDECPEL 0x13 /* Load external cache with preferred exclusive and lock */ +#define EOE_LDECFE 0x14 /* Load external cache with forced exclusive */ +#define EOE_LDECFEL 0x15 /* Load external cache with forced exclusive and lock */ +#define EOE_RSA 0x16 /* Read with stash allocate */ +#define EOE_RSAU 0x17 /* Read with stash allocate and unlock */ +#define EOE_READI 0x18 /* Read with invalidate */ +#define EOE_RWNITC 0x19 /* Read with no intention to cache */ +#define EOE_WCI 0x1a /* Write cache inhibited */ +#define EOE_WWSA 0x1b /* Write with stash allocate */ +#define EOE_WWSAL 0x1c /* Write with stash allocate and lock */ +#define EOE_WWSAO 0x1d /* Write with stash allocate only */ +#define EOE_WWSAOL 0x1e /* Write with stash allocate only and lock */ +#define EOE_VALID 0x80 + +/* Function prototypes */ +int pamu_domain_init(void); +int pamu_enable_liodn(int liodn); +int pamu_disable_liodn(int liodn); +void pamu_free_subwins(int liodn); +int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size, + u32 omi, unsigned long rpn, u32 snoopid, uint32_t stashid, + u32 subwin_cnt, int prot); +int pamu_config_spaace(int liodn, u32 subwin_cnt, u32 subwin_addr, + phys_addr_t subwin_size, u32 omi, unsigned long rpn, + uint32_t snoopid, u32 stashid, int enable, int prot); + +u32 get_stash_id(u32 stash_dest_hint, u32 vcpu); +void get_ome_index(u32 *omi_index, struct device *dev); +int pamu_update_paace_stash(int liodn, u32 subwin, u32 value); +int pamu_disable_spaace(int liodn, u32 subwin); +u32 pamu_get_max_subwin_cnt(void); + +#endif /* __FSL_PAMU_H */ |