Clean out for expt

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 0 insertions, 272 deletions

diff --git a/sys/vm/vm_physseg.c b/sys/vm/vm_physseg.c
deleted file mode 100644
index 88560e5..0000000
--- a/sys/vm/vm_physseg.c
+++ /dev/null
@@ -1,272 +0,0 @@
-/*
- * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
- * 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.
- * 3. Neither the name of Hyra nor the names of its
- *    contributors may be used to endorse or promote products derived from
- *    this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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/limine.h>
-#include <sys/cdefs.h>
-#include <sys/syslog.h>
-#include <vm/physseg.h>
-#include <vm/vm.h>
-#include <bitmap.h>
-#include <string.h>
-
-__MODULE_NAME("vm_physseg");
-__KERNEL_META("$Hyra$: vm_physseg.c, Ian Marco Moffett, "
-              "The Hyra physical memory manager");
-
-#if defined(VM_PHYSSEG_DEBUG)
-#define DPRINTF(...) KDEBUG(__VA_ARGS__)
-#else
-#define DPRINTF(...) __nothing
-#endif      /* defined(VM_PHYSSEG_DEBUG) */
-
-static struct limine_memmap_request mmap_req = {
-    .id = LIMINE_MEMMAP_REQUEST,
-    .revision = 0
-};
-
-static struct limine_memmap_response *resp = NULL;
-
-__used static const char *segment_name[] = {
-    [LIMINE_MEMMAP_USABLE]                  = "usable",
-    [LIMINE_MEMMAP_RESERVED]                = "reserved",
-    [LIMINE_MEMMAP_ACPI_RECLAIMABLE]        = "ACPI reclaimable",
-    [LIMINE_MEMMAP_ACPI_NVS]                = "ACPI NVS",
-    [LIMINE_MEMMAP_BAD_MEMORY]              = "bad",
-    [LIMINE_MEMMAP_BOOTLOADER_RECLAIMABLE]  = "bootloader reclaimable",
-    [LIMINE_MEMMAP_KERNEL_AND_MODULES]      = "kernel and modules",
-    [LIMINE_MEMMAP_FRAMEBUFFER]             = "framebuffer"
-};
-
-static const int MAX_SEGMENTS = __ARRAY_COUNT(segment_name);
-
-
-static bitmap_t bitmap = NULL;
-static size_t pages_total = 0;
-static size_t pages_reserved = 0;
-static size_t last_used_idx = 0;
-static size_t pages_allocated = 0;
-static size_t bitmap_size = 0;
-static size_t highest_frame_idx;
-static size_t bitmap_free_start;    /* Beginning bit of free region */
-
-static void
-vm_physseg_getstat(void)
-{
-    struct limine_memmap_entry *entry;
-    size_t entry_pages = 0;
-
-    pages_total = 0;
-    pages_reserved = 0;
-
-    for (size_t i = 0; i < resp->entry_count; ++i) {
-        entry = resp->entries[i];
-        entry_pages = entry->length / vm_get_page_size();
-
-        /* Drop invalid entries */
-        if (entry->type >= MAX_SEGMENTS) {
-            continue;
-        }
-
-        pages_total += entry_pages;
-
-        if (entry->type != LIMINE_MEMMAP_USABLE) {
-            pages_reserved += entry_pages;
-            continue;
-        }
-    }
-}
-
-static void
-vm_physseg_bitmap_alloc(void)
-{
-    struct limine_memmap_entry *entry;
-    uintptr_t highest_addr = 0;
-
-    for (size_t i = 0; i < resp->entry_count; ++i) {
-        entry = resp->entries[i];
-
-        /* Drop any entries with an invalid type */
-        if (entry->type >= MAX_SEGMENTS) {
-            continue;
-        }
-
-        if (entry->type != LIMINE_MEMMAP_USABLE) {
-            /* This memory is not usable */
-            continue;
-        }
-
-        if (entry->length >= bitmap_size) {
-            bitmap = PHYS_TO_VIRT(entry->base);
-            memset(bitmap, 0xFF, bitmap_size);
-            entry->length -= bitmap_size;
-            entry->base += bitmap_size;
-            return;
-        }
-
-        highest_addr = __MAX(highest_addr, entry->base + entry->length);
-    }
-}
-
-static void
-vm_physseg_bitmap_populate(void)
-{
-    struct limine_memmap_entry *entry;
-#if defined(VM_PHYSSEG_DEBUG)
-    size_t start, end;
-#endif      /* defined(VM_PHYSSEG_DEBUG) */
-
-    for (size_t i = 0; i < resp->entry_count; ++i) {
-        entry = resp->entries[i];
-
-        /* Drop any entries with an invalid type */
-        if (entry->type >= MAX_SEGMENTS) {
-            continue;
-        }
-
-#if defined(VM_PHYSSEG_DEBUG)
-        /* Dump the memory map if we are debugging */
-        start = entry->base;
-        end = entry->base + entry->length;
-        DPRINTF("0x%x - 0x%x, size: 0x%x, type: %s\n",
-                start, end, entry->length,
-                segment_name[entry->type]);
-#endif  /* defined(VM_PHYSSEG_DEBUG) */
-
-        /* Don't set non-usable entries as free */
-        if (entry->type != LIMINE_MEMMAP_USABLE) {
-            continue;
-        }
-
-        /* Populate */
-        if (bitmap_free_start == 0) {
-            bitmap_free_start = entry->base/0x1000;
-        }
-        for (size_t j = 0; j < entry->length; j += 0x1000) {
-            bitmap_unset_bit(bitmap, (entry->base + j) / 0x1000);
-        }
-    }
-}
-
-static void
-vm_physseg_bitmap_init(void)
-{
-    uintptr_t highest_addr;
-    struct limine_memmap_entry *entry;
-
-    highest_addr = 0;
-    highest_frame_idx = 0;
-
-    /* Find the highest entry */
-    for (size_t i = 0; i < resp->entry_count; ++i) {
-        entry = resp->entries[i];
-
-        if (entry->type != LIMINE_MEMMAP_USABLE) {
-            /* Memeory not usable */
-            continue;
-        }
-
-        highest_addr = __MAX(highest_addr, entry->base + entry->length);
-    }
-
-    highest_frame_idx = highest_addr / 0x1000;
-    bitmap_size = __ALIGN_UP(highest_frame_idx / 8, 0x1000);
-
-    DPRINTF("Bitmap size: %d bytes\n", bitmap_size);
-    DPRINTF("Allocating and populating bitmap now...\n");
-
-    vm_physseg_bitmap_alloc();
-    vm_physseg_bitmap_populate();
-}
-
-uintptr_t
-vm_alloc_pageframe(size_t count)
-{
-    size_t pages = 0;
-    size_t tmp;
-
-    while (last_used_idx < highest_frame_idx) {
-        if (!bitmap_test_bit(bitmap, last_used_idx++)) {
-            /* We have a free page */
-            if (++pages != count)
-                continue;
-
-            tmp = last_used_idx - count;
-
-            for (size_t i = tmp; i < last_used_idx; ++i)
-                bitmap_set_bit(bitmap, i);
-
-            pages_allocated += count;
-            return tmp * vm_get_page_size();
-        } else {
-            pages = 0;
-        }
-    }
-
-    return 0;
-}
-
-/*
- * Frees physical pageframes.
- *
- * @base: Base to start freeing at.
- * @count: Number of pageframes to free.
- */
-void
-vm_free_pageframe(uintptr_t base, size_t count)
-{
-    const size_t PAGE_SIZE = vm_get_page_size();
-
-    for (uintptr_t p = base; p < base + (count*PAGE_SIZE); p += PAGE_SIZE) {
-        bitmap_unset_bit(bitmap, p/0x1000);
-    }
-
-    pages_allocated -= count;
-}
-
-void
-vm_physseg_init(void)
-{
-    resp = mmap_req.response;
-
-    vm_physseg_bitmap_init();
-}
-
-struct physmem_stat
-vm_phys_memstat(void)
-{
-    size_t pagesize = vm_get_page_size();
-    struct physmem_stat stat;
-
-    vm_physseg_getstat();
-    stat.total_kib = (pages_total * pagesize) / 1024;
-    stat.reserved_kib = (pages_reserved * pagesize) / 1024;
-    stat.alloc_kib = (pages_allocated * pagesize) / 1024;
-    stat.avl_kib = stat.total_kib - stat.alloc_kib;
-    return stat;
-}