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Diffstat (limited to 'stand/powerpc/ps3/ps3mmu.c')
| -rw-r--r-- | stand/powerpc/ps3/ps3mmu.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/stand/powerpc/ps3/ps3mmu.c b/stand/powerpc/ps3/ps3mmu.c new file mode 100644 index 0000000..08dcf75 --- /dev/null +++ b/stand/powerpc/ps3/ps3mmu.c @@ -0,0 +1,120 @@ +/*- + * Copyright (C) 2010 Nathan Whitehorn + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stand.h> +#include <stdint.h> + +#define _KERNEL +#include <machine/cpufunc.h> +#include <machine/psl.h> +#include <machine/pte.h> +#include <machine/slb.h> +#include <machine/param.h> + +#include "bootstrap.h" +#include "lv1call.h" +#include "ps3.h" + +register_t pteg_count, pteg_mask; +uint64_t as_id; +uint64_t virtual_avail; + +int +ps3mmu_map(uint64_t va, uint64_t pa) +{ + struct lpte pt; + int shift; + uint64_t vsid, ptegidx; + + if (pa < 0x8000000) { /* Phys mem? */ + pt.pte_hi = LPTE_BIG; + pt.pte_lo = LPTE_M; + shift = 24; + vsid = 0; + } else { + pt.pte_hi = 0; + pt.pte_lo = LPTE_I | LPTE_G | LPTE_M | LPTE_NOEXEC; + shift = ADDR_PIDX_SHFT; + vsid = 1; + } + + pt.pte_hi |= (vsid << LPTE_VSID_SHIFT) | + (((uint64_t)(va & ADDR_PIDX) >> ADDR_API_SHFT64) & LPTE_API); + pt.pte_lo |= pa; + ptegidx = vsid ^ (((uint64_t)va & ADDR_PIDX) >> shift); + + pt.pte_hi |= LPTE_LOCKED | LPTE_VALID; + ptegidx &= pteg_mask; + + return (lv1_insert_pte(ptegidx, &pt, LPTE_LOCKED)); +} + +void * +ps3mmu_mapdev(uint64_t pa, size_t length) +{ + uint64_t spa; + void *mapstart; + int err; + + mapstart = (void *)(uintptr_t)virtual_avail; + + for (spa = pa; spa < pa + length; spa += PAGE_SIZE) { + err = ps3mmu_map(virtual_avail, spa); + virtual_avail += PAGE_SIZE; + if (err != 0) + return (NULL); + } + + return (mapstart); +} + +int +ps3mmu_init(int maxmem) +{ + uint64_t ptsize; + int i; + + i = lv1_setup_address_space(&as_id, &ptsize); + pteg_count = ptsize / sizeof(struct lpteg); + pteg_mask = pteg_count - 1; + + for (i = 0; i < maxmem; i += 16*1024*1024) + ps3mmu_map(i,i); + + virtual_avail = 0x10000000; + + __asm __volatile ("slbia; slbmte %0, %1; slbmte %2,%3" :: + "r"((0 << SLBV_VSID_SHIFT) | SLBV_L), "r"(0 | SLBE_VALID), + "r"(1 << SLBV_VSID_SHIFT), + "r"((1 << SLBE_ESID_SHIFT) | SLBE_VALID | 1)); + + mtmsr(PSL_IR | PSL_DR | PSL_RI | PSL_ME); + + return (0); +} + |
