[PATCH] unicore32 framebuffer driver fix: make videomemory kmalloc-ed and floatable

Guan Xuetao
2011-03-29T14:38:13Z

1. make videomemory kmalloc-ed in fb-puv3.c
2. remove resource reservation for old fixed UNIGFX_MMAP & UVC_MMAP space
3. remove unused 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.c

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
---
arch/unicore32/include/mach/PKUnity.h | 10 ----------
arch/unicore32/include/mach/memory.h | 1 -
arch/unicore32/kernel/puv3-core.c | 5 -----
arch/unicore32/kernel/setup.c | 15 ++-------------
arch/unicore32/mm/mmu.c | 20 --------------------
drivers/video/fb-puv3.c | 27 ++++++++++++++++-----------
6 files changed, 18 insertions(+), 60 deletions(-)

diff --git a/arch/unicore32/include/mach/PKUnity.h b/arch/unicore32/include/mach/PKUnity.h
index a18bdc3..8040d57 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 0bf21c9..4be72c2 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 8b1b6be..1a505a7 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 1e175a8..471b6bc 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 7bf3d58..db2d334 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 dbd2dc4..286e295 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 +679,26 @@ 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 = kmalloc(UNIFB_MEMSIZE, GFP_KERNEL);
+ 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 +707,6 @@ 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;
--
1.6.2.2