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Diffstat (limited to 'c/src/lib/libbsp/powerpc/virtex4/include/mmu.h')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/virtex4/include/mmu.h | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/c/src/lib/libbsp/powerpc/virtex4/include/mmu.h b/c/src/lib/libbsp/powerpc/virtex4/include/mmu.h deleted file mode 100644 index 3e2710b95c..0000000000 --- a/c/src/lib/libbsp/powerpc/virtex4/include/mmu.h +++ /dev/null @@ -1,269 +0,0 @@ -#ifndef RTEMS_VIRTEX4_MMU_H -#define RTEMS_VIRTEX4_MMU_H -/** - * @file - * - * @ingroup Virtex4MMU - * - * @brief Routines to manipulate the PPC 405 MMU. - */ -/* - * Authorship - * ---------- - * This software was created by - * Till Straumann <strauman@slac.stanford.edu>, 2005-2007, - * Stanford Linear Accelerator Center, Stanford University. - * and was transcribed for the PPC 405 by - * R. Claus <claus@slac.stanford.edu>, 2012, - * Stanford Linear Accelerator Center, Stanford University, - * - * Acknowledgement of sponsorship - * ------------------------------ - * This software was produced by - * the Stanford Linear Accelerator Center, Stanford University, - * under Contract DE-AC03-76SFO0515 with the Department of Energy. - * - * Government disclaimer of liability - * ---------------------------------- - * Neither the United States nor the United States Department of Energy, - * nor any of their employees, makes any warranty, express or implied, or - * assumes any legal liability or responsibility for the accuracy, - * completeness, or usefulness of any data, apparatus, product, or process - * disclosed, or represents that its use would not infringe privately owned - * rights. - * - * Stanford disclaimer of liability - * -------------------------------- - * Stanford University makes no representations or warranties, express or - * implied, nor assumes any liability for the use of this software. - * - * Stanford disclaimer of copyright - * -------------------------------- - * Stanford University, owner of the copyright, hereby disclaims its - * copyright and all other rights in this software. Hence, anyone may - * freely use it for any purpose without restriction. - * - * Maintenance of notices - * ---------------------- - * In the interest of clarity regarding the origin and status of this - * SLAC software, this and all the preceding Stanford University notices - * are to remain affixed to any copy or derivative of this software made - * or distributed by the recipient and are to be affixed to any copy of - * software made or distributed by the recipient that contains a copy or - * derivative of this software. - * - * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03 - */ - -#include <rtems.h> -#include <inttypes.h> -#include <stdio.h> - -#ifdef __cplusplus -extern "C" { -#endif - -/** - * @defgroup Virtex4MMU Virtex 4 - MMU Support - * - * @ingroup Virtex4 - * - * @brief MMU support. - * - * @{ - */ - -/* Some routines require or return a index 'key'. - */ -typedef int bsp_tlb_idx_t; - -/* Cache the relevant TLB entries so that we can make sure the user cannot - * create conflicting (overlapping) entries. Keep them public for informational - * purposes. - */ -typedef struct { - struct { - uint32_t pad:24; - uint32_t tid:8; /** Translation ID */ - } id; - struct { - uint32_t epn:22; /** Effective page number */ - uint32_t size:3; /** Page size */ - uint32_t v:1; /** Valid */ - uint32_t att:2; /** Little-endian, User-defined */ - uint32_t pad:4; - } hi; /** High word*/ - struct { - uint32_t rpn:22; /** Real page number */ - uint32_t perm:6; /** Execute enable, Write-enable, Zone select */ - uint32_t wimg:4; /** Write-through, Caching inhibited, Mem coherent, Guarded */ - } lo; /** Low word */ -} bsp_tlb_entry_t; - -#define NTLBS 64 - -extern bsp_tlb_entry_t* bsp_mmu_cache; - - -// These constants will have to be shifted right by 20 bits before -// being inserted the high word of the TLB. - -#define MMU_M_SIZE_1K (0x00000000U) -#define MMU_M_SIZE_4K (0x08000000U) -#define MMU_M_SIZE_16K (0x10000000U) -#define MMU_M_SIZE_64K (0x18000000U) -#define MMU_M_SIZE_256K (0x20000000U) -#define MMU_M_SIZE_1M (0x28000000U) -#define MMU_M_SIZE_4M (0x30000000U) -#define MMU_M_SIZE_16M (0x38000000U) -#define MMU_M_SIZE_MIN (MMU_M_SIZE_1K) -#define MMU_M_SIZE_MAX (MMU_M_SIZE_16M) -#define MMU_M_SIZE (0x38000000U) -#define MMU_V_SIZE (27) - -#define MMU_M_ATTR_LITTLE_ENDIAN (0x02000000U) -#define MMU_M_ATTR_USER0 (0x01000000U) -#define MMU_M_ATTR (0x03000000U) -#define MMU_V_ATTR (24) - -// These constants have the same bit positions they'll occupy -// in low word of the TLB. - -#define MMU_M_PERM_EXEC (0x00000200U) -#define MMU_M_PERM_DATA_WRITE (0x00000100U) -#define MMU_M_PERM_ZONE_SELECT (0x000000f0U) -#define MMU_M_PERM (0x000003f0U) -#define MMU_V_PERM (4) - -#define MMU_M_PROP_WRITE_THROUGH (0x00000008U) -#define MMU_M_PROP_UNCACHED (0x00000004U) -#define MMU_M_PROP_MEM_COHERENT (0x00000002U) -#define MMU_M_PROP_GUARDED (0x00000001U) -#define MMU_M_PROP (0x0000000fU) -#define MMU_V_PROP (0) - - -/* - * Dump (cleartext) content info from cached TLB entries - * to a file (stdout if f==NULL). - */ -void -bsp_mmu_dump_cache(FILE *f); - -/* Read a TLB entry from the hardware and store the settings in the - * bsp_mmu_cache[] structure. - * - * The routine can perform this operation quietly or - * print information to a file. - * - * 'key': TLB entry index. - * 'quiet': perform operation silently (no info printed) if nonzero. - * 'f': open FILE where to print information. May be NULL, in - * which case 'stdout' is used. - * - * RETURNS: - * 0: success; TLB entry is VALID - * +1: success but TLB entry is INVALID - * < 0: error (-1: invalid argument) - * (-2: driver not initialized) - */ -int -bsp_mmu_update(bsp_tlb_idx_t key, bool quiet, FILE *f); - -/* Initialize cache. Should be done only once although this is not enforced. - * - * RETURNS: zero on success, nonzero on error; in this case the driver will - * refuse to change TLB entries (other than disabling them). - */ -int -bsp_mmu_initialize(void); - -/* Find first free TLB entry by examining all entries' valid bit. The first - * entry without the valid bit set is returned. - * - * RETURNS: A free TLB entry number. -1 if no entry can be found. - */ -bsp_tlb_idx_t -bsp_mmu_find_first_free(void); - -/* Write a TLB entry (can also be used to disable an entry). - * - * The routine checks against the cached data in bsp_mmu_cache[] - * to prevent the user from generating overlapping entries. - * - * 'idx': TLB entry # to manipulate - * 'ea': Effective address (must be page aligned) - * 'pa': Physical address (must be page aligned) - * 'sz': Page size selector; page size is 1024 * 2^(2*sz) bytes. - * 'sz' may also be one of the following: - * - page size in bytes ( >= 1024 ); the selector - * value is then computed by this routine. - * However, 'sz' must be a valid page size - * or -1 will be returned. - * - a value < 0 to invalidate/disable the - * TLB entry. - * 'flgs': Page's little-endian & user-defined flags, permissions and attributes - * 'tid': Translation ID - * - * RETURNS: 0 on success, nonzero on error: - * - * >0: requested mapping would overlap with - * existing mapping in another entry. Return - * value gives conflicting entry + 1; i.e., - * if a value of 4 is returned then the request - * conflicts with existing mapping in entry 3. - * -1: invalid argument - * -3: driver not initialized (or initialization failed). - * <0: other error - */ -bsp_tlb_idx_t -bsp_mmu_write(bsp_tlb_idx_t idx, uint32_t ea, uint32_t pa, uint sz, - uint32_t flgs, uint32_t tid); - -/* Check if a ea/tid/sz mapping overlaps with an existing entry. - * - * 'ea': The Effective Address to match against - * 'sz': The 'logarithmic' size selector; the page size - * is 1024*2^(2*sz). - * 'tid': The TID to match against - * - * RETURNS: - * >= 0: index of TLB entry that already provides a mapping - * which overlaps within the ea range. - * -1: SUCCESS (no conflicting entry found) - * <=-2: ERROR (invalid input) - */ -bsp_tlb_idx_t -bsp_mmu_match(uint32_t ea, int sz, uint32_t tid); - -/* Find TLB index that maps 'ea/tid' combination - * - * 'ea': Effective address to match against - * 'tid': The TID to match against - * - * RETURNS: index 'key'; i.e., the index number. - * - * On error (no mapping) -1 is returned. - */ -bsp_tlb_idx_t -bsp_mmu_find(uint32_t ea, uint32_t tid); - -/* Mark TLB entry as invalid ('disabled'). - * - * 'key': TLB entry index. - * - * RETURNS: zero on success, nonzero on error (TLB unchanged). - * - * NOTE: If a TLB entry is disabled the associated - * entry in bsp_mmu_cache[] is also marked as disabled. - */ -int -bsp_mmu_invalidate(bsp_tlb_idx_t key); - -/** @} */ - -#ifdef __cplusplus -}; -#endif - -#endif |