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Diffstat (limited to 'target/xtensa/core-dsp3400/core-matmap.h')
| -rw-r--r-- | target/xtensa/core-dsp3400/core-matmap.h | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/target/xtensa/core-dsp3400/core-matmap.h b/target/xtensa/core-dsp3400/core-matmap.h new file mode 100644 index 000000000..8d1aa8336 --- /dev/null +++ b/target/xtensa/core-dsp3400/core-matmap.h @@ -0,0 +1,312 @@ +/* + * xtensa/config/core-matmap.h -- Memory access and translation mapping + * parameters (CHAL) of the Xtensa processor core configuration. + * + * If you are using Xtensa Tools, see <xtensa/config/core.h> (which includes + * this file) for more details. + * + * In the Xtensa processor products released to date, all parameters + * defined in this file are derivable (at least in theory) from + * information contained in the core-isa.h header file. + * In particular, the following core configuration parameters are relevant: + * XCHAL_HAVE_CACHEATTR + * XCHAL_HAVE_MIMIC_CACHEATTR + * XCHAL_HAVE_XLT_CACHEATTR + * XCHAL_HAVE_PTP_MMU + * XCHAL_ITLB_ARF_ENTRIES_LOG2 + * XCHAL_DTLB_ARF_ENTRIES_LOG2 + * XCHAL_DCACHE_IS_WRITEBACK + * XCHAL_ICACHE_SIZE (presence of I-cache) + * XCHAL_DCACHE_SIZE (presence of D-cache) + * XCHAL_HW_VERSION_MAJOR + * XCHAL_HW_VERSION_MINOR + */ + +/* Copyright (c) 1999-2010 Tensilica Inc. + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ + + +#ifndef XTENSA_CONFIG_CORE_MATMAP_H +#define XTENSA_CONFIG_CORE_MATMAP_H + + +/*---------------------------------------------------------------------- + CACHE (MEMORY ACCESS) ATTRIBUTES + ----------------------------------------------------------------------*/ + + +/* Cache Attribute encodings -- lists of access modes for each cache attribute: */ +#define XCHAL_FCA_LIST XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_CACHED XCHAL_SEP \ + XTHAL_FAM_BYPASS XCHAL_SEP \ + XTHAL_FAM_CACHED XCHAL_SEP \ + XTHAL_FAM_CACHED XCHAL_SEP \ + XTHAL_FAM_CACHED XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION XCHAL_SEP \ + XTHAL_FAM_EXCEPTION +#define XCHAL_LCA_LIST XTHAL_LAM_CACHED_NOALLOC XCHAL_SEP \ + XTHAL_LAM_CACHED XCHAL_SEP \ + XTHAL_LAM_BYPASSG XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_CACHED XCHAL_SEP \ + XTHAL_LAM_CACHED XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_EXCEPTION XCHAL_SEP \ + XTHAL_LAM_ISOLATE XCHAL_SEP \ + XTHAL_LAM_EXCEPTION +#define XCHAL_SCA_LIST XTHAL_SAM_WRITETHRU XCHAL_SEP \ + XTHAL_SAM_WRITETHRU XCHAL_SEP \ + XTHAL_SAM_BYPASS XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_WRITEBACK XCHAL_SEP \ + XTHAL_SAM_WRITEBACK_NOALLOC XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_EXCEPTION XCHAL_SEP \ + XTHAL_SAM_ISOLATE XCHAL_SEP \ + XTHAL_SAM_EXCEPTION + + +/* + * Specific encoded cache attribute values of general interest. + * If a specific cache mode is not available, the closest available + * one is returned instead (eg. writethru instead of writeback, + * bypass instead of writethru). + */ +#define XCHAL_CA_BYPASS 2 /* cache disabled (bypassed) mode */ +#define XCHAL_CA_WRITETHRU 1 /* cache enabled (write-through) mode */ +#define XCHAL_CA_WRITEBACK 4 /* cache enabled (write-back) mode */ +#define XCHAL_CA_WRITEBACK_NOALLOC 4 /* cache enabled (write-back no-allocate) mode */ +#define XCHAL_CA_ILLEGAL 15 /* no access allowed (all cause exceptions) mode */ +#define XCHAL_CA_ISOLATE 14 /* cache isolate (accesses go to cache not memory) mode */ + + +/*---------------------------------------------------------------------- + MMU + ----------------------------------------------------------------------*/ + +/* + * General notes on MMU parameters. + * + * Terminology: + * ASID = address-space ID (acts as an "extension" of virtual addresses) + * VPN = virtual page number + * PPN = physical page number + * CA = encoded cache attribute (access modes) + * TLB = translation look-aside buffer (term is stretched somewhat here) + * I = instruction (fetch accesses) + * D = data (load and store accesses) + * way = each TLB (ITLB and DTLB) consists of a number of "ways" + * that simultaneously match the virtual address of an access; + * a TLB successfully translates a virtual address if exactly + * one way matches the vaddr; if none match, it is a miss; + * if multiple match, one gets a "multihit" exception; + * each way can be independently configured in terms of number of + * entries, page sizes, which fields are writable or constant, etc. + * set = group of contiguous ways with exactly identical parameters + * ARF = auto-refill; hardware services a 1st-level miss by loading a PTE + * from the page table and storing it in one of the auto-refill ways; + * if this PTE load also misses, a miss exception is posted for s/w. + * min-wired = a "min-wired" way can be used to map a single (minimum-sized) + * page arbitrarily under program control; it has a single entry, + * is non-auto-refill (some other way(s) must be auto-refill), + * all its fields (VPN, PPN, ASID, CA) are all writable, and it + * supports the XCHAL_MMU_MIN_PTE_PAGE_SIZE page size (a current + * restriction is that this be the only page size it supports). + * + * TLB way entries are virtually indexed. + * TLB ways that support multiple page sizes: + * - must have all writable VPN and PPN fields; + * - can only use one page size at any given time (eg. setup at startup), + * selected by the respective ITLBCFG or DTLBCFG special register, + * whose bits n*4+3 .. n*4 index the list of page sizes for way n + * (XCHAL_xTLB_SETm_PAGESZ_LOG2_LIST for set m corresponding to way n); + * this list may be sparse for auto-refill ways because auto-refill + * ways have independent lists of supported page sizes sharing a + * common encoding with PTE entries; the encoding is the index into + * this list; unsupported sizes for a given way are zero in the list; + * selecting unsupported sizes results in undefined hardware behaviour; + * - is only possible for ways 0 thru 7 (due to ITLBCFG/DTLBCFG definition). + */ + +#define XCHAL_MMU_ASID_INVALID 0 /* ASID value indicating invalid address space */ +#define XCHAL_MMU_ASID_KERNEL 0 /* ASID value indicating kernel (ring 0) address space */ +#define XCHAL_MMU_SR_BITS 0 /* number of size-restriction bits supported */ +#define XCHAL_MMU_CA_BITS 4 /* number of bits needed to hold cache attribute encoding */ +#define XCHAL_MMU_MAX_PTE_PAGE_SIZE 29 /* max page size in a PTE structure (log2) */ +#define XCHAL_MMU_MIN_PTE_PAGE_SIZE 29 /* min page size in a PTE structure (log2) */ + + +/*** Instruction TLB: ***/ + +#define XCHAL_ITLB_WAY_BITS 0 /* number of bits holding the ways */ +#define XCHAL_ITLB_WAYS 1 /* number of ways (n-way set-associative TLB) */ +#define XCHAL_ITLB_ARF_WAYS 0 /* number of auto-refill ways */ +#define XCHAL_ITLB_SETS 1 /* number of sets (groups of ways with identical settings) */ + +/* Way set to which each way belongs: */ +#define XCHAL_ITLB_WAY0_SET 0 + +/* Ways sets that are used by hardware auto-refill (ARF): */ +#define XCHAL_ITLB_ARF_SETS 0 /* number of auto-refill sets */ + +/* Way sets that are "min-wired" (see terminology comment above): */ +#define XCHAL_ITLB_MINWIRED_SETS 0 /* number of "min-wired" sets */ + + +/* ITLB way set 0 (group of ways 0 thru 0): */ +#define XCHAL_ITLB_SET0_WAY 0 /* index of first way in this way set */ +#define XCHAL_ITLB_SET0_WAYS 1 /* number of (contiguous) ways in this way set */ +#define XCHAL_ITLB_SET0_ENTRIES_LOG2 3 /* log2(number of entries in this way) */ +#define XCHAL_ITLB_SET0_ENTRIES 8 /* number of entries in this way (always a power of 2) */ +#define XCHAL_ITLB_SET0_ARF 0 /* 1=autorefill by h/w, 0=non-autorefill (wired/constant/static) */ +#define XCHAL_ITLB_SET0_PAGESIZES 1 /* number of supported page sizes in this way */ +#define XCHAL_ITLB_SET0_PAGESZ_BITS 0 /* number of bits to encode the page size */ +#define XCHAL_ITLB_SET0_PAGESZ_LOG2_MIN 29 /* log2(minimum supported page size) */ +#define XCHAL_ITLB_SET0_PAGESZ_LOG2_MAX 29 /* log2(maximum supported page size) */ +#define XCHAL_ITLB_SET0_PAGESZ_LOG2_LIST 29 /* list of log2(page size)s, separated by XCHAL_SEP; + 2^PAGESZ_BITS entries in list, unsupported entries are zero */ +#define XCHAL_ITLB_SET0_ASID_CONSTMASK 0 /* constant ASID bits; 0 if all writable */ +#define XCHAL_ITLB_SET0_VPN_CONSTMASK 0x00000000 /* constant VPN bits, not including entry index bits; 0 if all writable */ +#define XCHAL_ITLB_SET0_PPN_CONSTMASK 0 /* constant PPN bits, including entry index bits; 0 if all writable */ +#define XCHAL_ITLB_SET0_CA_CONSTMASK 0 /* constant CA bits; 0 if all writable */ +#define XCHAL_ITLB_SET0_ASID_RESET 0 /* 1 if ASID reset values defined (and all writable); 0 otherwise */ +#define XCHAL_ITLB_SET0_VPN_RESET 0 /* 1 if VPN reset values defined (and all writable); 0 otherwise */ +#define XCHAL_ITLB_SET0_PPN_RESET 1 /* 1 if PPN reset values defined (and all writable); 0 otherwise */ +#define XCHAL_ITLB_SET0_CA_RESET 1 /* 1 if CA reset values defined (and all writable); 0 otherwise */ +/* Constant VPN values for each entry of ITLB way set 0 (because VPN_CONSTMASK is non-zero): */ +#define XCHAL_ITLB_SET0_E0_VPN_CONST 0x00000000 +#define XCHAL_ITLB_SET0_E1_VPN_CONST 0x20000000 +#define XCHAL_ITLB_SET0_E2_VPN_CONST 0x40000000 +#define XCHAL_ITLB_SET0_E3_VPN_CONST 0x60000000 +#define XCHAL_ITLB_SET0_E4_VPN_CONST 0x80000000 +#define XCHAL_ITLB_SET0_E5_VPN_CONST 0xA0000000 +#define XCHAL_ITLB_SET0_E6_VPN_CONST 0xC0000000 +#define XCHAL_ITLB_SET0_E7_VPN_CONST 0xE0000000 +/* Reset PPN values for each entry of ITLB way set 0 (because SET0_PPN_RESET is non-zero): */ +#define XCHAL_ITLB_SET0_E0_PPN_RESET 0x00000000 +#define XCHAL_ITLB_SET0_E1_PPN_RESET 0x20000000 +#define XCHAL_ITLB_SET0_E2_PPN_RESET 0x40000000 +#define XCHAL_ITLB_SET0_E3_PPN_RESET 0x60000000 +#define XCHAL_ITLB_SET0_E4_PPN_RESET 0x80000000 +#define XCHAL_ITLB_SET0_E5_PPN_RESET 0xA0000000 +#define XCHAL_ITLB_SET0_E6_PPN_RESET 0xC0000000 +#define XCHAL_ITLB_SET0_E7_PPN_RESET 0xE0000000 +/* Reset CA values for each entry of ITLB way set 0 (because SET0_CA_RESET is non-zero): */ +#define XCHAL_ITLB_SET0_E0_CA_RESET 0x02 +#define XCHAL_ITLB_SET0_E1_CA_RESET 0x02 +#define XCHAL_ITLB_SET0_E2_CA_RESET 0x02 +#define XCHAL_ITLB_SET0_E3_CA_RESET 0x02 +#define XCHAL_ITLB_SET0_E4_CA_RESET 0x02 +#define XCHAL_ITLB_SET0_E5_CA_RESET 0x02 +#define XCHAL_ITLB_SET0_E6_CA_RESET 0x02 +#define XCHAL_ITLB_SET0_E7_CA_RESET 0x02 + + +/*** Data TLB: ***/ + +#define XCHAL_DTLB_WAY_BITS 0 /* number of bits holding the ways */ +#define XCHAL_DTLB_WAYS 1 /* number of ways (n-way set-associative TLB) */ +#define XCHAL_DTLB_ARF_WAYS 0 /* number of auto-refill ways */ +#define XCHAL_DTLB_SETS 1 /* number of sets (groups of ways with identical settings) */ + +/* Way set to which each way belongs: */ +#define XCHAL_DTLB_WAY0_SET 0 + +/* Ways sets that are used by hardware auto-refill (ARF): */ +#define XCHAL_DTLB_ARF_SETS 0 /* number of auto-refill sets */ + +/* Way sets that are "min-wired" (see terminology comment above): */ +#define XCHAL_DTLB_MINWIRED_SETS 0 /* number of "min-wired" sets */ + + +/* DTLB way set 0 (group of ways 0 thru 0): */ +#define XCHAL_DTLB_SET0_WAY 0 /* index of first way in this way set */ +#define XCHAL_DTLB_SET0_WAYS 1 /* number of (contiguous) ways in this way set */ +#define XCHAL_DTLB_SET0_ENTRIES_LOG2 3 /* log2(number of entries in this way) */ +#define XCHAL_DTLB_SET0_ENTRIES 8 /* number of entries in this way (always a power of 2) */ +#define XCHAL_DTLB_SET0_ARF 0 /* 1=autorefill by h/w, 0=non-autorefill (wired/constant/static) */ +#define XCHAL_DTLB_SET0_PAGESIZES 1 /* number of supported page sizes in this way */ +#define XCHAL_DTLB_SET0_PAGESZ_BITS 0 /* number of bits to encode the page size */ +#define XCHAL_DTLB_SET0_PAGESZ_LOG2_MIN 29 /* log2(minimum supported page size) */ +#define XCHAL_DTLB_SET0_PAGESZ_LOG2_MAX 29 /* log2(maximum supported page size) */ +#define XCHAL_DTLB_SET0_PAGESZ_LOG2_LIST 29 /* list of log2(page size)s, separated by XCHAL_SEP; + 2^PAGESZ_BITS entries in list, unsupported entries are zero */ +#define XCHAL_DTLB_SET0_ASID_CONSTMASK 0 /* constant ASID bits; 0 if all writable */ +#define XCHAL_DTLB_SET0_VPN_CONSTMASK 0x00000000 /* constant VPN bits, not including entry index bits; 0 if all writable */ +#define XCHAL_DTLB_SET0_PPN_CONSTMASK 0 /* constant PPN bits, including entry index bits; 0 if all writable */ +#define XCHAL_DTLB_SET0_CA_CONSTMASK 0 /* constant CA bits; 0 if all writable */ +#define XCHAL_DTLB_SET0_ASID_RESET 0 /* 1 if ASID reset values defined (and all writable); 0 otherwise */ +#define XCHAL_DTLB_SET0_VPN_RESET 0 /* 1 if VPN reset values defined (and all writable); 0 otherwise */ +#define XCHAL_DTLB_SET0_PPN_RESET 1 /* 1 if PPN reset values defined (and all writable); 0 otherwise */ +#define XCHAL_DTLB_SET0_CA_RESET 1 /* 1 if CA reset values defined (and all writable); 0 otherwise */ +/* Constant VPN values for each entry of DTLB way set 0 (because VPN_CONSTMASK is non-zero): */ +#define XCHAL_DTLB_SET0_E0_VPN_CONST 0x00000000 +#define XCHAL_DTLB_SET0_E1_VPN_CONST 0x20000000 +#define XCHAL_DTLB_SET0_E2_VPN_CONST 0x40000000 +#define XCHAL_DTLB_SET0_E3_VPN_CONST 0x60000000 +#define XCHAL_DTLB_SET0_E4_VPN_CONST 0x80000000 +#define XCHAL_DTLB_SET0_E5_VPN_CONST 0xA0000000 +#define XCHAL_DTLB_SET0_E6_VPN_CONST 0xC0000000 +#define XCHAL_DTLB_SET0_E7_VPN_CONST 0xE0000000 +/* Reset PPN values for each entry of DTLB way set 0 (because SET0_PPN_RESET is non-zero): */ +#define XCHAL_DTLB_SET0_E0_PPN_RESET 0x00000000 +#define XCHAL_DTLB_SET0_E1_PPN_RESET 0x20000000 +#define XCHAL_DTLB_SET0_E2_PPN_RESET 0x40000000 +#define XCHAL_DTLB_SET0_E3_PPN_RESET 0x60000000 +#define XCHAL_DTLB_SET0_E4_PPN_RESET 0x80000000 +#define XCHAL_DTLB_SET0_E5_PPN_RESET 0xA0000000 +#define XCHAL_DTLB_SET0_E6_PPN_RESET 0xC0000000 +#define XCHAL_DTLB_SET0_E7_PPN_RESET 0xE0000000 +/* Reset CA values for each entry of DTLB way set 0 (because SET0_CA_RESET is non-zero): */ +#define XCHAL_DTLB_SET0_E0_CA_RESET 0x02 +#define XCHAL_DTLB_SET0_E1_CA_RESET 0x02 +#define XCHAL_DTLB_SET0_E2_CA_RESET 0x02 +#define XCHAL_DTLB_SET0_E3_CA_RESET 0x02 +#define XCHAL_DTLB_SET0_E4_CA_RESET 0x02 +#define XCHAL_DTLB_SET0_E5_CA_RESET 0x02 +#define XCHAL_DTLB_SET0_E6_CA_RESET 0x02 +#define XCHAL_DTLB_SET0_E7_CA_RESET 0x02 + + + + +#endif /*XTENSA_CONFIG_CORE_MATMAP_H*/ + |