Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-msm8x60-vcm.c b/arch/arm/mach-msm/board-msm8x60-vcm.c
new file mode 100644
index 0000000..6078367
--- /dev/null
+++ b/arch/arm/mach-msm/board-msm8x60-vcm.c
@@ -0,0 +1,168 @@
+/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bootmem.h>
+
+#include <linux/vcm.h>
+#include <linux/vcm_alloc.h>
+
+#define MSM_SMI_BASE 0x38000000
+#define MSM_SMI_SIZE 0x04000000
+
+#define SMI_16M 0
+#define SMI_1M 1
+#define SMI_64K 2
+#define SMI_4K 3
+#define EBI_16M 4
+#define EBI_1M 5
+#define EBI_64K 6
+#define EBI_4K 7
+
+static void free_ebi_pools(void);
+
+static struct physmem_region memory[] = {
+ { /* SMI 16M */
+ .addr = MSM_SMI_BASE,
+ .size = SZ_16M,
+ .chunk_size = SZ_16M
+ },
+ { /* SMI 1M */
+ .addr = MSM_SMI_BASE + SZ_16M,
+ .size = SZ_8M,
+ .chunk_size = SZ_1M
+ },
+ { /* SMI 64K */
+ .addr = MSM_SMI_BASE + SZ_16M + SZ_8M,
+ .size = SZ_4M,
+ .chunk_size = SZ_64K
+ },
+ { /* SMI 4K */
+ .addr = MSM_SMI_BASE + SZ_16M + SZ_8M + SZ_4M,
+ .size = SZ_4M,
+ .chunk_size = SZ_4K
+ },
+
+ { /* EBI 16M */
+ .addr = 0,
+ .size = SZ_16M,
+ .chunk_size = SZ_16M
+ },
+ { /* EBI 1M */
+ .addr = 0,
+ .size = SZ_8M,
+ .chunk_size = SZ_1M
+ },
+ { /* EBI 64K */
+ .addr = 0,
+ .size = SZ_4M,
+ .chunk_size = SZ_64K
+ },
+ { /* EBI 4K */
+ .addr = 0,
+ .size = SZ_4M,
+ .chunk_size = SZ_4K
+ }
+};
+
+
+/* The pool priority MUST be in descending order of size */
+static struct vcm_memtype_map mt_map[] __initdata = {
+ {
+ /* MEMTYPE_0 */
+ .pool_id = {SMI_16M, SMI_1M, SMI_64K, SMI_4K},
+ .num_pools = 4,
+ },
+ {
+ /* MEMTYPE_1 */
+ .pool_id = {SMI_16M, SMI_1M, SMI_64K, EBI_4K},
+ .num_pools = 4,
+ },
+ { /* MEMTYPE_2 */
+ .pool_id = {EBI_16M, EBI_1M, EBI_64K, EBI_4K},
+ .num_pools = 4,
+ },
+ {
+ /* MEMTYPE_3 */
+ .pool_id = {SMI_16M, SMI_1M, EBI_1M, SMI_64K, EBI_64K, EBI_4K},
+ .num_pools = 6,
+ }
+};
+
+static int __init msm8x60_vcm_init(void)
+{
+ int ret, i;
+ void *ebi_chunk;
+
+
+ for (i = 0; i < ARRAY_SIZE(memory); i++) {
+ if (memory[i].addr == 0) {
+ ebi_chunk = __alloc_bootmem(memory[i].size,
+ memory[i].size, 0);
+ if (!ebi_chunk) {
+ pr_err("Could not allocate VCM-managed physical"
+ " memory\n");
+ ret = -ENOMEM;
+ goto fail;
+ }
+ memory[i].addr = __pa(ebi_chunk);
+ }
+ }
+
+ ret = vcm_sys_init(memory, ARRAY_SIZE(memory),
+ mt_map, ARRAY_SIZE(mt_map),
+ (void *)MSM_SMI_BASE + MSM_SMI_SIZE - SZ_8M, SZ_8M);
+
+ if (ret != 0) {
+ pr_err("vcm_sys_init() ret %i\n", ret);
+ goto fail;
+ }
+
+ return 0;
+fail:
+ free_ebi_pools();
+ return ret;
+};
+
+static void free_ebi_pools(void)
+{
+ int i;
+ phys_addr_t r;
+ for (i = 0; i < ARRAY_SIZE(memory); i++) {
+ r = memory[i].addr;
+ if (r > MSM_SMI_BASE + MSM_SMI_SIZE)
+ free_bootmem((unsigned long)__va(r), memory[i].size);
+ }
+}
+
+
+/* Useful for testing, and if VCM is ever unloaded */
+static void __exit msm8x60_vcm_exit(void)
+{
+ int ret;
+
+ ret = vcm_sys_destroy();
+ if (ret != 0) {
+ pr_err("vcm_sys_destroy() ret %i\n", ret);
+ goto fail;
+ }
+ free_ebi_pools();
+fail:
+ return;
+}
+
+
+subsys_initcall(msm8x60_vcm_init);
+module_exit(msm8x60_vcm_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Stepan Moskovchenko <stepanm@codeaurora.org>");