unicore32 framebuffer fix: get videomemory by __get_free_pages() and make it floatable

1. get videomemory by __get_free_pages() in fb-puv3.c
2. remove resource reservation for old fixed UNIGFX_MMAP & UVC_MMAP space
3. remove unused macros: PKUNTIY_UNIGFX_MMAP_BASE, PKUNITY_UNIGFX_MMAP_SIZE,
	PKUNITY_UVC_MMAP_BASE, PKUNITY_UVC_MMAP_SIZE and KUSER_UNIGFX_BASE
4. remove unused header linux/vmalloc.h in fb-puv3.h

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: Arnd Bergmann <arnd@arndb.de>

6 files changed, 19 insertions, 60 deletions

diff --git a/arch/unicore32/include/mach/PKUnity.h b/arch/unicore32/include/mach/PKUnity.h
index a18bdc3810e6..8040d575dddb 100644
--- a/arch/unicore32/include/mach/PKUnity.h
+++ b/arch/unicore32/include/mach/PKUnity.h
@@ -24,16 +24,6 @@
 #define PKUNITY_MMIO_BASE               0x80000000 /* 0x80000000 - 0xFFFFFFFF 2GB */
 
 /*
- * PKUNITY Memory Map Addresses: 0x0D000000 - 0x0EFFFFFF (32MB)
- *      0x0D000000 - 0x0DFFFFFF 16MB: for UVC
- *      0x0E000000 - 0x0EFFFFFF 16MB: for UNIGFX
- */
-#define PKUNITY_UVC_MMAP_BASE           0x0D000000
-#define PKUNITY_UVC_MMAP_SIZE           0x01000000 /* 16MB */
-#define PKUNITY_UNIGFX_MMAP_BASE        0x0E000000
-#define PKUNITY_UNIGFX_MMAP_SIZE        0x01000000 /* 16MB */
-
-/*
  * PKUNITY System Bus Addresses (PCI): 0x80000000 - 0xBFFFFFFF (1GB)
  * 0x80000000 - 0x8000000B 12B    PCI Configuration regs
  * 0x80010000 - 0x80010250 592B   PCI Bridge Base
diff --git a/arch/unicore32/include/mach/memory.h b/arch/unicore32/include/mach/memory.h
index 0bf21c944710..4be72c21d491 100644
--- a/arch/unicore32/include/mach/memory.h
+++ b/arch/unicore32/include/mach/memory.h
@@ -50,7 +50,6 @@ void puv3_pci_adjust_zones(unsigned long *size, unsigned long *holes);
 
 /* kuser area */
 #define KUSER_VECPAGE_BASE      (KUSER_BASE + UL(0x3fff0000))
-#define KUSER_UNIGFX_BASE       (PAGE_OFFSET + PKUNITY_UNIGFX_MMAP_BASE)
 /* kuser_vecpage (0xbfff0000) is ro, and vectors page (0xffff0000) is rw */
 #define kuser_vecpage_to_vectors(x)     ((x) - (KUSER_VECPAGE_BASE)     \
                                         + (VECTORS_BASE))
diff --git a/arch/unicore32/kernel/puv3-core.c b/arch/unicore32/kernel/puv3-core.c
index 8b1b6beb858e..1a505a787765 100644
--- a/arch/unicore32/kernel/puv3-core.c
+++ b/arch/unicore32/kernel/puv3-core.c
@@ -99,11 +99,6 @@ static struct resource puv3_unigfx_resources[] = {
                 .end    = io_v2p(PKUNITY_UNIGFX_BASE) + 0xfff,
                 .flags  = IORESOURCE_MEM,
         },
-        [1] = {
-                .start  = PKUNITY_UNIGFX_MMAP_BASE,
-                .end    = PKUNITY_UNIGFX_MMAP_BASE + PKUNITY_UNIGFX_MMAP_SIZE,
-                .flags  = IORESOURCE_MEM,
-        },
 };
 
 static struct resource puv3_rtc_resources[] = {
diff --git a/arch/unicore32/kernel/setup.c b/arch/unicore32/kernel/setup.c
index 1e175a82844d..471b6bca8da4 100644
--- a/arch/unicore32/kernel/setup.c
+++ b/arch/unicore32/kernel/setup.c
@@ -64,12 +64,6 @@ static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
  */
 static struct resource mem_res[] = {
         {
-                .name = "Video RAM",
-                .start = 0,
-                .end = 0,
-                .flags = IORESOURCE_MEM
-        },
-        {
                 .name = "Kernel text",
                 .start = 0,
                 .end = 0,
@@ -83,9 +77,8 @@ static struct resource mem_res[] = {
         }
 };
 
-#define video_ram   mem_res[0]
-#define kernel_code mem_res[1]
-#define kernel_data mem_res[2]
+#define kernel_code mem_res[0]
+#define kernel_data mem_res[1]
 
 /*
  * These functions re-use the assembly code in head.S, which
@@ -224,10 +217,6 @@ request_standard_resources(struct meminfo *mi)
                     kernel_data.end <= res->end)
                         request_resource(res, &kernel_data);
         }
-
-        video_ram.start = PKUNITY_UNIGFX_MMAP_BASE;
-        video_ram.end   = PKUNITY_UNIGFX_MMAP_BASE + PKUNITY_UNIGFX_MMAP_SIZE;
-        request_resource(&iomem_resource, &video_ram);
 }
 
 static void (*init_machine)(void) __initdata;
diff --git a/arch/unicore32/mm/mmu.c b/arch/unicore32/mm/mmu.c
index 7bf3d588631f..db2d334941b4 100644
--- a/arch/unicore32/mm/mmu.c
+++ b/arch/unicore32/mm/mmu.c
@@ -338,15 +338,6 @@ void __init uc32_mm_memblock_reserve(void)
          * and can only be in node 0.
          */
         memblock_reserve(__pa(swapper_pg_dir), PTRS_PER_PGD * sizeof(pgd_t));
-
-#ifdef CONFIG_PUV3_UNIGFX
-        /*
-         * These should likewise go elsewhere.  They pre-reserve the
-         * screen/video memory region at the 48M~64M of main system memory.
-         */
-        memblock_reserve(PKUNITY_UNIGFX_MMAP_BASE, PKUNITY_UNIGFX_MMAP_SIZE);
-        memblock_reserve(PKUNITY_UVC_MMAP_BASE, PKUNITY_UVC_MMAP_SIZE);
-#endif
 }
 
 /*
@@ -371,17 +362,6 @@ static void __init devicemaps_init(void)
                 pmd_clear(pmd_off_k(addr));
 
         /*
-         * Create a mapping for UniGFX VRAM
-         */
-#ifdef CONFIG_PUV3_UNIGFX
-        map.pfn = __phys_to_pfn(PKUNITY_UNIGFX_MMAP_BASE);
-        map.virtual = KUSER_UNIGFX_BASE;
-        map.length = PKUNITY_UNIGFX_MMAP_SIZE;
-        map.type = MT_KUSER;
-        create_mapping(&map);
-#endif
-
-        /*
          * Create a mapping for the machine vectors at the high-vectors
          * location (0xffff0000).  If we aren't using high-vectors, also
          * create a mapping at the low-vectors virtual address.
diff --git a/drivers/video/fb-puv3.c b/drivers/video/fb-puv3.c
index dbd2dc4745d1..27f2c57e06e9 100644
--- a/drivers/video/fb-puv3.c
+++ b/drivers/video/fb-puv3.c
@@ -13,7 +13,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
-#include <linux/vmalloc.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/fb.h>
@@ -531,7 +530,7 @@ static int unifb_set_par(struct fb_info *info)
                 return -EINVAL;
         }
 
-        writel(PKUNITY_UNIGFX_MMAP_BASE, UDE_FSA);
+        writel(info->fix.smem_start, UDE_FSA);
         writel(info->var.yres, UDE_LS);
         writel(get_line_length(info->var.xres,
                         info->var.bits_per_pixel) >> 3, UDE_PS);
@@ -680,13 +679,27 @@ static int unifb_probe(struct platform_device *dev)
         struct fb_info *info;
         u32 unifb_regs[UNIFB_REGS_NUM];
         int retval = -ENOMEM;
-        struct resource *iomem, *mapmem;
+        struct resource *iomem;
+        void *videomemory;
+
+        videomemory = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP,
+                                get_order(UNIFB_MEMSIZE));
+        if (!videomemory)
+                goto err;
+
+        memset(videomemory, 0, UNIFB_MEMSIZE);
+
+        unifb_fix.smem_start = virt_to_phys(videomemory);
+        unifb_fix.smem_len = UNIFB_MEMSIZE;
+
+        iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+        unifb_fix.mmio_start = iomem->start;
 
         info = framebuffer_alloc(sizeof(u32)*256, &dev->dev);
         if (!info)
                 goto err;
 
-        info->screen_base = (char __iomem *)KUSER_UNIGFX_BASE;
+        info->screen_base = (char __iomem *)videomemory;
         info->fbops = &unifb_ops;
 
         retval = fb_find_mode(&info->var, info, NULL,
@@ -695,13 +708,6 @@ static int unifb_probe(struct platform_device *dev)
         if (!retval || (retval == 4))
                 info->var = unifb_default;
 
-        iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
-        unifb_fix.mmio_start = iomem->start;
-
-        mapmem = platform_get_resource(dev, IORESOURCE_MEM, 1);
-        unifb_fix.smem_start = mapmem->start;
-        unifb_fix.smem_len = UNIFB_MEMSIZE;
-
         info->fix = unifb_fix;
         info->pseudo_palette = info->par;
         info->par = NULL;