Split out the memslot stuff from red_worker.c to its own files

This is required so that we can have code in other files that does address
validation.

1 files changed, 79 insertions, 0 deletions

diff --git a/server/red_memslots.h b/server/red_memslots.h
new file mode 100644
index 00000000..229e5cc5
--- /dev/null
+++ b/server/red_memslots.h
@@ -0,0 +1,79 @@
+/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+   Copyright (C) 2009,2010 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _H_REDMEMSLOTS
+#define _H_REDMEMSLOTS
+
+#include "red_common.h"
+
+#include <spice/qxl_dev.h>
+
+typedef struct MemSlot {
+    int generation;
+    unsigned long virt_start_addr;
+    unsigned long virt_end_addr;
+    long address_delta;
+} MemSlot;
+
+typedef struct RedMemSlotInfo {
+    MemSlot **mem_slots;
+    uint32_t num_memslots_groups;
+    uint32_t num_memslots;
+    uint8_t mem_slot_bits;
+    uint8_t generation_bits;
+    uint8_t memslot_id_shift;
+    uint8_t memslot_gen_shift;
+    uint8_t internal_groupslot_id;
+    unsigned long memslot_gen_mask;
+    unsigned long memslot_clean_virt_mask;
+} RedMemSlotInfo;
+
+static inline int get_memslot_id(RedMemSlotInfo *info, unsigned long addr)
+{
+    return addr >> info->memslot_id_shift;
+}
+
+static inline int get_generation(RedMemSlotInfo *info, unsigned long addr)
+{
+    return (addr >> info->memslot_gen_shift) & info->memslot_gen_mask;
+}
+
+unsigned long get_virt_delta(RedMemSlotInfo *info, unsigned long addr, int group_id);
+void validate_virt(RedMemSlotInfo *info, unsigned long virt, int slot_id,
+                   uint32_t add_size, uint32_t group_id);
+unsigned long get_virt(RedMemSlotInfo *info, unsigned long addr, uint32_t add_size,
+                       int group_id);
+
+void *validate_chunk (RedMemSlotInfo *info, QXLPHYSICAL data, uint32_t group_id, uint32_t *data_size_out, QXLPHYSICAL *next_out);
+void *cb_get_virt(void *opaque, unsigned long addr,
+                  uint32_t add_size, uint32_t group_id);
+void cb_validate_virt(void *opaque,
+                      unsigned long virt, unsigned long from_addr,
+                      uint32_t add_size, uint32_t group_id);
+void red_memslot_info_init(RedMemSlotInfo *info,
+                           uint32_t num_groups, uint32_t num_slots,
+                           uint8_t generation_bits,
+                           uint8_t id_bits,
+                           uint8_t internal_groupslot_id);
+void red_memslot_info_add_slot(RedMemSlotInfo *info, uint32_t slot_group_id, uint32_t slot_id,
+                               uint64_t addr_delta, unsigned long virt_start, unsigned long virt_end,
+                               uint32_t generation);
+void red_memslot_info_del_slot(RedMemSlotInfo *info, uint32_t slot_group_id, uint32_t slot_id);
+void red_memslot_info_reset(RedMemSlotInfo *info);
+
+#endif