Fix for memory corruption during hibernate

Change-Id: I4ee4ff339e34feb460e5faadfe3b3b937f881e56
Signed-off-by: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/9701
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-boot-test: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>

1 files changed, 155 insertions, 0 deletions

diff --git a/meta-agl-bsp/meta-renesas/recipes-kernel/mmngr-module/files/0001-Fix-for-memory-corruption-during-hibernate.patch b/meta-agl-bsp/meta-renesas/recipes-kernel/mmngr-module/files/0001-Fix-for-memory-corruption-during-hibernate.patch
new file mode 100644
index 000000000..de0365da5
--- /dev/null
+++ b/meta-agl-bsp/meta-renesas/recipes-kernel/mmngr-module/files/0001-Fix-for-memory-corruption-during-hibernate.patch
@@ -0,0 +1,155 @@
+From 99f60a25458ac553ff609f5bdbf4db7dade46d9a Mon Sep 17 00:00:00 2001
+From: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com>
+Date: Sat, 10 Jun 2017 20:26:26 +0900
+Subject: [PATCH] Fix for memory corruption during hibernate
+
+Signed-off-by: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com>
+---
+ drv/mmngr_drv.c | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 106 insertions(+), 3 deletions(-)
+
+diff --git a/drv/mmngr_drv.c b/drv/mmngr_drv.c
+index 797800f..91f6c6e 100755
+--- a/drv/mmngr_drv.c
++++ b/drv/mmngr_drv.c
+@@ -844,7 +844,7 @@ static struct miscdevice misc = {
+ extern struct cma *rcar_gen2_dma_contiguous;
+ #endif
+ 
+-static int mm_init(void)
++static int mmngr_probe(struct platform_device *pdev)
+ {
+ 	int			ret = 0;
+ 	struct MM_DRVDATA	*p = NULL;
+@@ -946,16 +946,16 @@ static int mm_init(void)
+ 	printk(KERN_ERR "MMD reserve area from 0x%08x to 0x%08x at physical\n",
+ 		(unsigned int)phy_addr,
+ 		(unsigned int)phy_addr + MM_KERNEL_RESERVE_SIZE - 1);
+-#endif
+ #ifdef MMNGR_IPMMU_ENABLE
+ 	r8a779x_ipmmu_startup();
+ 	r8a779x_ipmmu_initialize(IPMMUMX_DOMAIN);
+ #endif
++#endif
+ 
+ 	return 0;
+ }
+ 
+-static void mm_exit(void)
++static int mmngr_remove(struct platform_device *pdev)
+ {
+ #ifdef MMNGR_IPMMU_ENABLE
+ 	r8a779x_ipmmu_cleanup();
+@@ -983,6 +983,109 @@ static void mm_exit(void)
+ #endif
+ 
+ 	kfree(mm_drvdata);
++	return 0;
++}
++static int mmngr_suspend(struct device *dev)
++{
++	return 0;
++}
++static int mmngr_resume(struct device *dev)
++{
++	return 0;
++}
++static int mmngr_freeze(struct device *dev)
++{
++#if defined(MMNGR_KOELSCH) || defined(MMNGR_LAGER) || \
++		defined(MMNGR_ALT) || defined(MMNGR_GOSE)
++	iowrite32((~MM_IMPCTR_VAL) & ioread32(top_impctr), top_impctr);
++#endif
++	mm_set_mxi_path(0, 0);
++	dma_free_coherent(mm_drvdata->mm_dev_reserve,
++			mm_drvdata->reserve_size,
++			(void *)mm_drvdata->reserve_kernel_virt_addr,
++			(dma_addr_t)mm_drvdata->reserve_phy_addr);
++	return 0;
++}
++static int mmngr_thaw(struct device *dev)
++{
++	void			*pkernel_virt_addr;
++	mm_set_mxi_path(MM_OMXBUF_MXI_ADDR,
++		MM_OMXBUF_MXI_ADDR + MM_OMXBUF_SIZE);
++	pkernel_virt_addr = dma_alloc_coherent(mm_drvdata->mm_dev_reserve,
++				MM_KERNEL_RESERVE_SIZE,
++				(dma_addr_t *)&mm_drvdata->reserve_phy_addr,
++				GFP_KERNEL);
++	mm_drvdata->reserve_kernel_virt_addr = (unsigned long)pkernel_virt_addr;
++	return 0;
++}
++static int mmngr_restore(struct device *dev)
++{
++	void			*pkernel_virt_addr;
++	mm_set_mxi_path(MM_OMXBUF_MXI_ADDR,
++		MM_OMXBUF_MXI_ADDR + MM_OMXBUF_SIZE);
++
++#ifdef MMNGR_KOELSCH
++	if ((MM_PRR_ESMASK & ioread32(top_prr)) >= MM_PRR_ES2) {
++		mm_enable_pmb();
++		mm_set_pmb_area(MM_OMXBUF_ADDR, top_impmba0, top_impmbd0);
++		mm_enable_vpc_utlb();
++	}
++#endif
++#ifdef MMNGR_LAGER
++	if ((MM_PRR_ESMASK & ioread32(top_prr)) >= MM_PRR_ES2) {
++		mm_enable_pmb();
++		mm_set_pmb_area(MM_OMXBUF_ADDR, top_impmba0, top_impmbd0);
++		mm_set_pmb_area(MM_OMXBUF_ADDR + MM_PMB_SIZE_128M,
++			top_impmba1, top_impmbd1);
++		mm_enable_vpc_utlb();
++	}
++#endif
++#ifdef MMNGR_ALT
++	mm_enable_pmb();
++	mm_set_pmb_area(MM_OMXBUF_ADDR, top_impmba0, top_impmbd0);
++	mm_enable_vpc_utlb();
++#endif
++#ifdef MMNGR_GOSE
++	mm_enable_pmb();
++	mm_set_pmb_area(MM_OMXBUF_ADDR, top_impmba0, top_impmbd0);
++	mm_enable_vpc_utlb();
++#endif
++	pkernel_virt_addr = dma_alloc_coherent(mm_drvdata->mm_dev_reserve,
++				MM_KERNEL_RESERVE_SIZE,
++				(dma_addr_t *)&mm_drvdata->reserve_phy_addr,
++				GFP_KERNEL);
++	mm_drvdata->reserve_kernel_virt_addr = (unsigned long)pkernel_virt_addr;
++
++	return 0;
++}
++static const struct dev_pm_ops mmngr_pm_ops = {
++	SET_SYSTEM_SLEEP_PM_OPS(mmngr_suspend, mmngr_resume)
++	.freeze = mmngr_freeze,
++	.thaw = mmngr_thaw,
++	.restore = mmngr_restore,
++};
++struct platform_driver mmngr_driver = {
++	.probe = mmngr_probe,
++	.remove = mmngr_remove,
++	.driver = {
++		.name = "mmngr",
++		.pm = &mmngr_pm_ops,
++	},
++};
++struct platform_device mmngr_device = {
++	.name = "mmngr",
++	.id = -1,
++};
++static int mm_init(void)
++{
++	platform_driver_register(&mmngr_driver);
++	platform_device_register(&mmngr_device);
++	return 0;
++}
++static void mm_exit(void)
++{
++	platform_device_unregister(&mmngr_device);
++	platform_driver_unregister(&mmngr_driver);
+ }
+ 
+ module_init(mm_init);
+-- 
+1.8.3.1
+