linux-kexecboot: add 2.6.29, currently only supports beagle

1 files changed, 209 insertions, 0 deletions

diff --git a/recipes/kexecboot/linux-kexecboot-2.6.29/isp/omap3camera/0002-omap3isp-Add-ISP-MMU-wrapper.patch b/recipes/kexecboot/linux-kexecboot-2.6.29/isp/omap3camera/0002-omap3isp-Add-ISP-MMU-wrapper.patch
new file mode 100644
index 0000000000..cfca26723a
--- /dev/null
+++ b/recipes/kexecboot/linux-kexecboot-2.6.29/isp/omap3camera/0002-omap3isp-Add-ISP-MMU-wrapper.patch
@@ -0,0 +1,209 @@
+From 731527a7dc26533a878c7c5f36fc148fdcaa21b8 Mon Sep 17 00:00:00 2001
+From: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
+Date: Tue, 10 Mar 2009 10:49:02 +0200
+Subject: [PATCH] omap3isp: Add ISP MMU wrapper
+
+TODO:
+
+- The ISP driver should start using the IOMMU directly without this wrapper.
+
+Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
+---
+ drivers/media/video/isp/ispmmu.c |  141 ++++++++++++++++++++++++++++++++++++++
+ drivers/media/video/isp/ispmmu.h |   36 ++++++++++
+ 2 files changed, 177 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/media/video/isp/ispmmu.c
+ create mode 100644 drivers/media/video/isp/ispmmu.h
+
+diff --git a/drivers/media/video/isp/ispmmu.c b/drivers/media/video/isp/ispmmu.c
+new file mode 100644
+index 0000000..f872c71
+--- /dev/null
++++ b/drivers/media/video/isp/ispmmu.c
+@@ -0,0 +1,141 @@
++/*
++ * omap iommu wrapper for TI's OMAP3430 Camera ISP
++ *
++ * Copyright (C) 2008--2009 Nokia.
++ *
++ * Contributors:
++ *	Hiroshi Doyu <hiroshi.doyu@nokia.com>
++ *	Sakari Ailus <sakari.ailus@nokia.com>
++ *
++ * This package is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
++ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
++ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
++ */
++
++#include <linux/module.h>
++
++#include "ispmmu.h"
++#include "isp.h"
++
++#include <mach/iommu.h>
++#include <mach/iovmm.h>
++
++#define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8)
++
++static struct iommu *isp_iommu;
++
++dma_addr_t ispmmu_vmalloc(size_t bytes)
++{
++	return (dma_addr_t)iommu_vmalloc(isp_iommu, 0, bytes, IOMMU_FLAG);
++}
++
++void ispmmu_vfree(const dma_addr_t da)
++{
++	iommu_vfree(isp_iommu, (u32)da);
++}
++
++dma_addr_t ispmmu_kmap(u32 pa, int size)
++{
++	void *da;
++
++	da = (void *)iommu_kmap(isp_iommu, 0, pa, size, IOMMU_FLAG);
++	if (IS_ERR(da))
++		return PTR_ERR(da);
++
++	return (dma_addr_t)da;
++}
++
++void ispmmu_kunmap(dma_addr_t da)
++{
++	iommu_kunmap(isp_iommu, (u32)da);
++}
++
++dma_addr_t ispmmu_vmap(const struct scatterlist *sglist,
++		       int sglen)
++{
++	int err;
++	void *da;
++	struct sg_table *sgt;
++	unsigned int i;
++	struct scatterlist *sg, *src = (struct scatterlist *)sglist;
++
++	/*
++	 * convert isp sglist to iommu sgt
++	 * FIXME: should be fixed in the upper layer?
++	 */
++	sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
++	if (!sgt)
++		return -ENOMEM;
++	err = sg_alloc_table(sgt, sglen, GFP_KERNEL);
++	if (err)
++		goto err_sg_alloc;
++
++	for_each_sg(sgt->sgl, sg, sgt->nents, i)
++		sg_set_buf(sg, phys_to_virt(sg_dma_address(src + i)),
++			   sg_dma_len(src + i));
++
++	da = (void *)iommu_vmap(isp_iommu, 0, sgt, IOMMU_FLAG);
++	if (IS_ERR(da))
++		goto err_vmap;
++
++	return (dma_addr_t)da;
++
++err_vmap:
++	sg_free_table(sgt);
++err_sg_alloc:
++	kfree(sgt);
++	return -ENOMEM;
++}
++EXPORT_SYMBOL_GPL(ispmmu_vmap);
++
++void ispmmu_vunmap(dma_addr_t da)
++{
++	struct sg_table *sgt;
++
++	sgt = iommu_vunmap(isp_iommu, (u32)da);
++	if (!sgt)
++		return;
++	sg_free_table(sgt);
++	kfree(sgt);
++}
++EXPORT_SYMBOL_GPL(ispmmu_vunmap);
++
++void ispmmu_save_context(void)
++{
++	if (isp_iommu)
++		iommu_save_ctx(isp_iommu);
++}
++
++void ispmmu_restore_context(void)
++{
++	if (isp_iommu)
++		iommu_restore_ctx(isp_iommu);
++}
++
++int __init ispmmu_init(void)
++{
++	int err = 0;
++
++	isp_get();
++	isp_iommu = iommu_get("isp");
++	if (IS_ERR(isp_iommu)) {
++		err = PTR_ERR(isp_iommu);
++		isp_iommu = NULL;
++	}
++	isp_put();
++
++	return err;
++}
++
++void ispmmu_cleanup(void)
++{
++	isp_get();
++	if (isp_iommu)
++		iommu_put(isp_iommu);
++	isp_put();
++	isp_iommu = NULL;
++}
+diff --git a/drivers/media/video/isp/ispmmu.h b/drivers/media/video/isp/ispmmu.h
+new file mode 100644
+index 0000000..0bc5bcb
+--- /dev/null
++++ b/drivers/media/video/isp/ispmmu.h
+@@ -0,0 +1,36 @@
++/*
++ * omap iommu wrapper for TI's OMAP3430 Camera ISP
++ *
++ * Copyright (C) 2008--2009 Nokia.
++ *
++ * Contributors:
++ *	Hiroshi Doyu <hiroshi.doyu@nokia.com>
++ *	Sakari Ailus <sakari.ailus@nokia.com>
++ *
++ * This package is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
++ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
++ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
++ */
++
++#ifndef OMAP_ISP_MMU_H
++#define OMAP_ISP_MMU_H
++
++#include <linux/err.h>
++#include <linux/scatterlist.h>
++
++dma_addr_t ispmmu_vmalloc(size_t bytes);
++void ispmmu_vfree(const dma_addr_t da);
++dma_addr_t ispmmu_kmap(u32 pa, int size);
++void ispmmu_kunmap(dma_addr_t da);
++dma_addr_t ispmmu_vmap(const struct scatterlist *sglist, int sglen);
++void ispmmu_vunmap(dma_addr_t da);
++void ispmmu_save_context(void);
++void ispmmu_restore_context(void);
++int ispmmu_init(void);
++void ispmmu_cleanup(void);
++
++#endif /* OMAP_ISP_MMU_H */
+-- 
+1.5.6.5
+