diff options
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/hppa/hppa/mainbus.c | 123 | ||||
| -rw-r--r-- | sys/arch/hppa/include/cpu.h | 3 |
2 files changed, 73 insertions, 53 deletions
diff --git a/sys/arch/hppa/hppa/mainbus.c b/sys/arch/hppa/hppa/mainbus.c index 9868262bef7..3718475056c 100644 --- a/sys/arch/hppa/hppa/mainbus.c +++ b/sys/arch/hppa/hppa/mainbus.c @@ -1,4 +1,4 @@ -/* $OpenBSD: mainbus.c,v 1.69 2007/12/28 19:48:50 kettenis Exp $ */ +/* $OpenBSD: mainbus.c,v 1.70 2009/02/01 14:53:02 miod Exp $ */ /* * Copyright (c) 1998-2004 Michael Shalayeff @@ -79,8 +79,9 @@ mbus_add_mapping(bus_addr_t bpa, bus_size_t size, int flags, bus_space_handle_t *bshp) { static u_int32_t bmm[0x4000/32]; - int bank, off, flex = HPPA_FLEX(bpa); - u_int64_t spa, epa; + int bank, off, flex; + vaddr_t pa, spa, epa; + vsize_t len; #ifdef BTLBDEBUG printf("bus_mem_add_mapping(%x,%x,%scachable,%p)\n", @@ -90,14 +91,6 @@ mbus_add_mapping(bus_addr_t bpa, bus_size_t size, int flags, if ((bank = vm_physseg_find(atop(bpa), &off)) >= 0) panic("mbus_add_mapping: mapping real memory @0x%lx", bpa); - /* - * determine if we are mapping IO space, or beyond the physmem - * region. use block mapping then - * - * we map the whole bus module (there are 1024 of those max) - * so, check here if it's mapped already, map if needed. - * all mappings are equal mappings. - */ #ifdef DEBUG if (flags & BUS_SPACE_MAP_CACHEABLE) { printf("WARNING: mapping I/O space cachable\n"); @@ -105,61 +98,87 @@ mbus_add_mapping(bus_addr_t bpa, bus_size_t size, int flags, } #endif - /* need a new mapping */ - if (!(bmm[flex / 32] & (1 << (flex % 32)))) { - spa = bpa & HPPA_FLEX_MASK; - epa = ((u_long)((u_int64_t)bpa + size + - ~HPPA_FLEX_MASK - 1) & HPPA_FLEX_MASK) - 1; + /* + * Mappings are established in HPPA_FLEX_SIZE units, + * either with BTLB, or regular mappings of the whole area. + */ + pa = bpa; + while (size != 0) { + flex = HPPA_FLEX(pa); + spa = pa & HPPA_FLEX_MASK; + epa = spa + HPPA_FLEX_SIZE; /* may wrap to 0... */ + + size -= min(size, HPPA_FLEX_SIZE - (pa - spa)); + + /* do need a new mapping? */ + if (!(bmm[flex / 32] & (1 << (flex % 32)))) { #ifdef BTLBDEBUG - printf("bus_mem_add_mapping: adding flex=%x " - "%qx-%qx, ", flex, spa, epa); + printf("bus_mem_add_mapping: adding flex=%x " + "%x-%x, ", flex, spa, epa - 1); #endif - while (spa < epa) { - vsize_t len = epa - spa; - u_int64_t pa; - if (len > pdc_btlb.max_size << PGSHIFT) - len = pdc_btlb.max_size << PGSHIFT; - if (btlb_insert(HPPA_SID_KERNEL, spa, spa, &len, - pmap_sid2pid(HPPA_SID_KERNEL) | - pmap_prot(pmap_kernel(), UVM_PROT_RW)) >= 0) { - pa = spa + len - 1; + while (spa != epa) { + len = epa - spa; + + /* + * Try to map with a BTLB first (might map + * much more than what we are requesting + * for, and cross HPPA_FLEX boundaries). + * + * Note that this code assumes that + * BTLB size are a power of two, so if + * the size is larger than HPPA_FLEX_SIZE + * it will span an integral number of + * HPPA_FLEX_SIZE slots. + */ + if (len > pdc_btlb.max_size << PGSHIFT) + len = pdc_btlb.max_size << PGSHIFT; + + if (btlb_insert(HPPA_SID_KERNEL, spa, spa, &len, + pmap_sid2pid(HPPA_SID_KERNEL) | + pmap_prot(pmap_kernel(), UVM_PROT_RW)) + >= 0) { + pa = spa + len; /* may wrap to 0... */ #ifdef BTLBDEBUG - printf("--- %x/%x, %qx, %qx-%qx", - flex, HPPA_FLEX(pa), pa, spa, epa); + printf("--- %x/%x, %x-%x ", + flex, HPPA_FLEX(pa - 1), + spa, pa - 1); #endif - /* do the mask */ - for (; flex <= HPPA_FLEX(pa); flex++) { + /* register all ranges */ + for (; flex <= HPPA_FLEX(pa - 1); + flex++) { #ifdef BTLBDEBUG - printf("mask %x ", flex); + printf("mask %x ", flex); #endif - bmm[flex / 32] |= (1 << (flex % 32)); - } - spa = pa; - } else { - spa = trunc_page(bpa); - epa = round_page(bpa + size); - - if (epa - 1 > ~0U) - epa = (u_int64_t)~0U + 1; - + bmm[flex / 32] |= + (1 << (flex % 32)); + } + if (len > epa - spa) + spa = epa; + else + spa = pa; + } else { #ifdef BTLBDEBUG - printf("kenter 0x%qx-0x%qx", spa, epa); + printf("kenter 0x%x-0x%x", spa, epa); #endif - for (; spa < epa; spa += PAGE_SIZE) - pmap_kenter_pa(spa, spa, UVM_PROT_RW); - } + for (; spa != epa; spa += PAGE_SIZE) + pmap_kenter_pa(spa, spa, + UVM_PROT_RW); + } #ifdef BTLBDEBUG - printf("\n"); + printf("\n"); #endif + } } - } #ifdef BTLBDEBUG - else { - printf("+++ already b-mapped flex=%x, mask=%x", - flex, bmm[flex / 8]); - } + else { + printf("+++ already b-mapped flex=%x, mask=%x\n", + flex, bmm[flex / 32]); + } #endif + pa = epa; + } + *bshp = bpa; return (0); } diff --git a/sys/arch/hppa/include/cpu.h b/sys/arch/hppa/include/cpu.h index 8763c036dca..fa72e7b52ea 100644 --- a/sys/arch/hppa/include/cpu.h +++ b/sys/arch/hppa/include/cpu.h @@ -1,4 +1,4 @@ -/* $OpenBSD: cpu.h,v 1.59 2008/10/15 23:23:47 deraadt Exp $ */ +/* $OpenBSD: cpu.h,v 1.60 2009/02/01 14:53:04 miod Exp $ */ /* * Copyright (c) 2000-2004 Michael Shalayeff @@ -142,6 +142,7 @@ extern register_t kpsw; #define HPPA_FLEX_DATA 0xfff80001 #define HPPA_DMA_ENABLE 0x00000001 #define HPPA_FLEX_MASK 0xfffc0000 +#define HPPA_FLEX_SIZE (1 + ~HPPA_FLEX_MASK) #define HPPA_FLEX(a) (((a) & HPPA_FLEX_MASK) >> 18) #define HPPA_SPA_ENABLE 0x00000020 #define HPPA_NMODSPBUS 64 |