| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1277942401-3566-8-git-send-email-x0095840@ti.com>
Date: Wed, 30 Jun 2010 18:59:59 -0500
From: Fernando Guzman Lugo <x0095840@...com>
To: <linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Cc: <ohad@...ery.com>, <hiroshi.doyo@...ia.com>,
<ameya.palande@...ia.com>, <felipe.contreras@...ia.com>,
Fernando Guzman Lugo <x0095840@...com>
Subject: [PATCHv3 7/9] dspbridge: move all iommu related code to a new file
This patch moves all the code related to iommu in the
dsp-mmu.c file
Signed-off-by: Fernando Guzman Lugo <x0095840@...com>
---
arch/arm/plat-omap/include/dspbridge/dsp-mmu.h | 90 ++++++++++
arch/arm/plat-omap/include/dspbridge/dspdeh.h | 1 -
drivers/dsp/bridge/Makefile | 2 +-
drivers/dsp/bridge/core/_deh.h | 3 -
drivers/dsp/bridge/core/_tiomap.h | 41 +-----
drivers/dsp/bridge/core/dsp-mmu.c | 218 ++++++++++++++++++++++++
drivers/dsp/bridge/core/mmu_fault.c | 76 --------
drivers/dsp/bridge/core/mmu_fault.h | 35 ----
drivers/dsp/bridge/core/tiomap3430.c | 111 +------------
drivers/dsp/bridge/core/ue_deh.c | 68 +-------
drivers/dsp/bridge/rmgr/proc.c | 6 +-
11 files changed, 318 insertions(+), 333 deletions(-)
create mode 100644 arch/arm/plat-omap/include/dspbridge/dsp-mmu.h
create mode 100644 drivers/dsp/bridge/core/dsp-mmu.c
delete mode 100644 drivers/dsp/bridge/core/mmu_fault.c
delete mode 100644 drivers/dsp/bridge/core/mmu_fault.h
diff --git a/arch/arm/plat-omap/include/dspbridge/dsp-mmu.h b/arch/arm/plat-omap/include/dspbridge/dsp-mmu.h
new file mode 100644
index 0000000..266f38b
--- /dev/null
+++ b/arch/arm/plat-omap/include/dspbridge/dsp-mmu.h
@@ -0,0 +1,90 @@
+/*
+ * dsp-mmu.h
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * DSP iommu.
+ *
+ * Copyright (C) 2005-2010 Texas Instruments, Inc.
+ *
+ * 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 _DSP_MMU_
+#define _DSP_MMU_
+
+#include <plat/iommu.h>
+#include <plat/iovmm.h>
+
+/**
+ * dsp_iotlb_init() - initialize dsp mmu entry
+ * @e: Pointer tbl entry.
+ * @da DSP address
+ * @pa: physical address.
+ * @pgsz page size to map.
+ *
+ * This function initializes a dsp mmu entry in order to be used with
+ * iommu functions.
+ */
+static inline void dsp_iotlb_init(struct iotlb_entry *e, u32 da, u32 pa,
+ u32 pgsz)
+{
+ e->da = da;
+ e->pa = pa;
+ e->valid = 1;
+ e->prsvd = 1;
+ e->pgsz = pgsz & MMU_CAM_PGSZ_MASK;
+ e->endian = MMU_RAM_ENDIAN_LITTLE;
+ e->elsz = MMU_RAM_ELSZ_32;
+ e->mixed = 0;
+}
+
+/**
+ * dsp_mmu_init() - initialize dsp_mmu module and returns a handle
+ *
+ * This function initialize dsp mmu module and returns a struct iommu
+ * handle to use it for dsp maps.
+ *
+ */
+struct iommu *dsp_mmu_init(void);
+
+/**
+ * dsp_mmu_exit() - destroy dsp mmu module
+ * @mmu: Pointer to iommu handle.
+ *
+ * This function destroys dsp mmu module.
+ *
+ */
+void dsp_mmu_exit(struct iommu *mmu);
+
+/**
+ * user_to_dsp_map() - maps user to dsp virtual address
+ * @mmu: Pointer to iommu handle.
+ * @uva: Virtual user space address.
+ * @da DSP address
+ * @size Buffer size to map.
+ * @usr_pgs struct page array pointer where the user pages will be stored
+ *
+ * This function maps a user space buffer into DSP virtual address.
+ *
+ */
+int user_to_dsp_map(struct iommu *mmu, u32 uva, u32 da, u32 size,
+ struct page **usr_pgs);
+
+/**
+ * user_to_dsp_unmap() - unmaps DSP virtual buffer.
+ * @mmu: Pointer to iommu handle.
+ * @da DSP address
+ *
+ * This function unmaps a user space buffer into DSP virtual address.
+ *
+ */
+int user_to_dsp_unmap(struct iommu *mmu, u32 da);
+
+#endif
diff --git a/arch/arm/plat-omap/include/dspbridge/dspdeh.h b/arch/arm/plat-omap/include/dspbridge/dspdeh.h
index 4394711..af19926 100644
--- a/arch/arm/plat-omap/include/dspbridge/dspdeh.h
+++ b/arch/arm/plat-omap/include/dspbridge/dspdeh.h
@@ -43,5 +43,4 @@ extern int bridge_deh_register_notify(struct deh_mgr *deh_mgr,
extern void bridge_deh_notify(struct deh_mgr *deh_mgr,
u32 ulEventMask, u32 dwErrInfo);
-extern void bridge_deh_release_dummy_mem(void);
#endif /* DSPDEH_ */
diff --git a/drivers/dsp/bridge/Makefile b/drivers/dsp/bridge/Makefile
index 66ca10a..9f32055 100644
--- a/drivers/dsp/bridge/Makefile
+++ b/drivers/dsp/bridge/Makefile
@@ -5,7 +5,7 @@ libservices = services/sync.o services/cfg.o \
services/ntfy.o services/services.o
libcore = core/chnl_sm.o core/msg_sm.o core/io_sm.o core/tiomap3430.o \
core/tiomap3430_pwr.o core/tiomap_io.o \
- core/mmu_fault.o core/ue_deh.o core/wdt.o core/dsp-clock.o
+ core/dsp-mmu.o core/ue_deh.o core/wdt.o core/dsp-clock.o
libpmgr = pmgr/chnl.o pmgr/io.o pmgr/msg.o pmgr/cod.o pmgr/dev.o pmgr/dspapi.o \
pmgr/dmm.o pmgr/cmm.o pmgr/dbll.o
librmgr = rmgr/dbdcd.o rmgr/disp.o rmgr/drv.o rmgr/mgr.o rmgr/node.o \
diff --git a/drivers/dsp/bridge/core/_deh.h b/drivers/dsp/bridge/core/_deh.h
index 8da2212..b1ef2e9 100644
--- a/drivers/dsp/bridge/core/_deh.h
+++ b/drivers/dsp/bridge/core/_deh.h
@@ -27,9 +27,6 @@ struct deh_mgr {
struct bridge_dev_context *hbridge_context; /* Bridge context. */
struct ntfy_object *ntfy_obj; /* NTFY object */
struct dsp_errorinfo err_info; /* DSP exception info. */
-
- /* MMU Fault DPC */
- struct tasklet_struct dpc_tasklet;
};
#endif /* _DEH_ */
diff --git a/drivers/dsp/bridge/core/_tiomap.h b/drivers/dsp/bridge/core/_tiomap.h
index 35f20a7..8a9a822 100644
--- a/drivers/dsp/bridge/core/_tiomap.h
+++ b/drivers/dsp/bridge/core/_tiomap.h
@@ -23,8 +23,7 @@
#include <plat/clockdomain.h>
#include <mach-omap2/prm-regbits-34xx.h>
#include <mach-omap2/cm-regbits-34xx.h>
-#include <plat/iommu.h>
-#include <plat/iovmm.h>
+#include <dspbridge/dsp-mmu.h>
#include <dspbridge/devdefs.h>
#include <dspbridge/dspioctl.h> /* for bridge_ioctl_extproc defn */
#include <dspbridge/sync.h>
@@ -381,42 +380,4 @@ extern s32 dsp_debug;
*/
int sm_interrupt_dsp(struct bridge_dev_context *dev_context, u16 mb_val);
-static inline void dsp_iotlb_init(struct iotlb_entry *e, u32 da, u32 pa,
- u32 pgsz)
-{
- e->da = da;
- e->pa = pa;
- e->valid = 1;
- e->prsvd = 1;
- e->pgsz = pgsz & MMU_CAM_PGSZ_MASK;
- e->endian = MMU_RAM_ENDIAN_LITTLE;
- e->elsz = MMU_RAM_ELSZ_32;
- e->mixed = 0;
-}
-
-/**
- * user_to_dsp_map() - maps user to dsp virtual address
- * @mmu: Pointer to iommu handle.
- * @uva: Virtual user space address.
- * @da DSP address
- * @size Buffer size to map.
- * @usr_pgs struct page array pointer where the user pages will be stored
- *
- * This function maps a user space buffer into DSP virtual address.
- *
- */
-
-int user_to_dsp_map(struct iommu *mmu, u32 uva, u32 da, u32 size,
- struct page **usr_pgs);
-
-/**
- * user_to_dsp_unmap() - unmaps DSP virtual buffer.
- * @mmu: Pointer to iommu handle.
- * @da DSP address
- *
- * This function unmaps a user space buffer into DSP virtual address.
- *
- */
-int user_to_dsp_unmap(struct iommu *mmu, u32 da);
-
#endif /* _TIOMAP_ */
diff --git a/drivers/dsp/bridge/core/dsp-mmu.c b/drivers/dsp/bridge/core/dsp-mmu.c
new file mode 100644
index 0000000..e8da327
--- /dev/null
+++ b/drivers/dsp/bridge/core/dsp-mmu.c
@@ -0,0 +1,218 @@
+/*
+ * dsp-mmu.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * DSP iommu.
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ *
+ * 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 <dspbridge/host_os.h>
+#include <plat/dmtimer.h>
+#include <dspbridge/dbdefs.h>
+#include <dspbridge/dev.h>
+#include <dspbridge/io_sm.h>
+#include <dspbridge/dspdeh.h>
+#include "_tiomap.h"
+
+#include <dspbridge/dsp-mmu.h>
+
+static struct tasklet_struct mmu_tasklet;
+
+static void fault_tasklet(unsigned long data)
+{
+ struct iommu *mmu = (struct iommu *)data;
+ struct bridge_dev_context *dev_ctx;
+ struct deh_mgr *dm;
+ struct iotlb_entry e;
+ u32 fa, tmp, dummy;
+
+ dev_get_deh_mgr(dev_get_first(), &dm);
+ dev_get_bridge_context(dev_get_first(), &dev_ctx);
+
+ if (!dm || !dev_ctx)
+ return;
+
+ dummy = __get_free_page(GFP_ATOMIC);
+
+ if (!dummy)
+ return;
+
+ print_dsp_trace_buffer(dev_ctx);
+ dump_dl_modules(dev_ctx);
+
+ fa = iommu_read_reg(mmu, MMU_FAULT_AD);
+ dsp_iotlb_init(&e, fa & PAGE_MASK, __pa(dummy), IOVMF_PGSZ_4K);
+ load_iotlb_entry(mmu, &e);
+
+ dsp_clk_enable(DSP_CLK_GPT7);
+ dsp_gpt_wait_overflow(DSP_CLK_GPT7, 0xfffffffe);
+
+ /* Clear MMU interrupt */
+ tmp = iommu_read_reg(mmu, MMU_IRQSTATUS);
+ iommu_write_reg(mmu, tmp, MMU_IRQSTATUS);
+
+ dump_dsp_stack(dev_ctx);
+ dsp_clk_disable(DSP_CLK_GPT7);
+
+ bridge_deh_notify(dm, DSP_MMUFAULT, fa);
+ free_page(dummy);
+}
+
+/*
+ * ======== mmu_fault_isr ========
+ * ISR to be triggered by a DSP MMU fault interrupt.
+ */
+static int mmu_fault_callback(struct iommu *mmu)
+{
+ if (!mmu)
+ return -EPERM;
+
+ iommu_write_reg(mmu, 0, MMU_IRQENABLE);
+ tasklet_schedule(&mmu_tasklet);
+ return 0;
+}
+
+/**
+ * dsp_mmu_init() - initialize dsp_mmu module and returns a handle
+ *
+ * This function initialize dsp mmu module and returns a struct iommu
+ * handle to use it for dsp maps.
+ *
+ */
+struct iommu *dsp_mmu_init()
+{
+ struct iommu *mmu;
+ mmu = iommu_get("iva2");
+ if (IS_ERR(mmu))
+ return mmu;
+
+ tasklet_init(&mmu_tasklet, fault_tasklet, (unsigned long)mmu);
+ mmu->isr = mmu_fault_callback;
+
+ return mmu;
+}
+
+/**
+ * dsp_mmu_exit() - destroy dsp mmu module
+ * @mmu: Pointer to iommu handle.
+ *
+ * This function destroys dsp mmu module.
+ *
+ */
+void dsp_mmu_exit(struct iommu *mmu)
+{
+
+ if (mmu)
+ iommu_put(mmu);
+ tasklet_kill(&mmu_tasklet);
+}
+
+/**
+ * user_to_dsp_map() - maps user to dsp virtual address
+ * @mmu: Pointer to iommu handle.
+ * @uva: Virtual user space address.
+ * @da DSP address
+ * @size Buffer size to map.
+ * @usr_pgs struct page array pointer where the user pages will be stored
+ *
+ * This function maps a user space buffer into DSP virtual address.
+ *
+ */
+
+int user_to_dsp_map(struct iommu *mmu, u32 uva, u32 da, u32 size,
+ struct page **usr_pgs)
+{
+ int res, w;
+ unsigned pages, i;
+ struct vm_area_struct *vma;
+ struct mm_struct *mm = current->mm;
+ struct sg_table *sgt;
+ struct scatterlist *sg;
+
+ if (!size || !usr_pgs)
+ return -EINVAL;
+
+ pages = size / PG_SIZE4K;
+
+ down_read(&mm->mmap_sem);
+ vma = find_vma(mm, uva);
+ while (vma && (uva + size > vma->vm_end))
+ vma = find_vma(mm, vma->vm_end + 1);
+
+ if (!vma) {
+ pr_err("%s: Failed to get VMA region for 0x%x (%d)\n",
+ __func__, uva, size);
+ up_read(&mm->mmap_sem);
+ return -EINVAL;
+ }
+ if (vma->vm_flags & (VM_WRITE | VM_MAYWRITE))
+ w = 1;
+ res = get_user_pages(current, mm, uva, pages, w, 1, usr_pgs, NULL);
+ up_read(&mm->mmap_sem);
+ if (res < 0)
+ return res;
+
+ sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
+
+ if (!sgt)
+ return -ENOMEM;
+
+ res = sg_alloc_table(sgt, pages, GFP_KERNEL);
+
+ if (res < 0)
+ goto err_sg;
+
+ for_each_sg(sgt->sgl, sg, sgt->nents, i)
+ sg_set_page(sg, usr_pgs[i], PAGE_SIZE, 0);
+
+ da = iommu_vmap(mmu, da, sgt, IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32);
+
+ if (IS_ERR_VALUE(da)) {
+ res = (int)da;
+ goto err_map;
+ }
+ return 0;
+
+err_map:
+ sg_free_table(sgt);
+err_sg:
+ kfree(sgt);
+ return res;
+}
+
+/**
+ * user_to_dsp_unmap() - unmaps DSP virtual buffer.
+ * @mmu: Pointer to iommu handle.
+ * @da DSP address
+ *
+ * This function unmaps a user space buffer into DSP virtual address.
+ *
+ */
+int user_to_dsp_unmap(struct iommu *mmu, u32 da)
+{
+ unsigned i;
+ struct sg_table *sgt;
+ struct scatterlist *sg;
+
+ sgt = iommu_vunmap(mmu, da);
+ if (!sgt)
+ return -EFAULT;
+
+ for_each_sg(sgt->sgl, sg, sgt->nents, i)
+ put_page(sg_page(sg));
+
+ sg_free_table(sgt);
+ kfree(sgt);
+
+ return 0;
+}
diff --git a/drivers/dsp/bridge/core/mmu_fault.c b/drivers/dsp/bridge/core/mmu_fault.c
deleted file mode 100644
index 54c0bc3..0000000
--- a/drivers/dsp/bridge/core/mmu_fault.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * mmu_fault.c
- *
- * DSP-BIOS Bridge driver support functions for TI OMAP processors.
- *
- * Implements DSP MMU fault handling functions.
- *
- * Copyright (C) 2005-2006 Texas Instruments, Inc.
- *
- * 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.
- */
-
-/* ----------------------------------- DSP/BIOS Bridge */
-#include <dspbridge/std.h>
-#include <dspbridge/dbdefs.h>
-
-/* ----------------------------------- Trace & Debug */
-#include <dspbridge/host_os.h>
-#include <dspbridge/dbc.h>
-#include <plat/iommu.h>
-
-/* ----------------------------------- OS Adaptation Layer */
-#include <dspbridge/drv.h>
-#include <dspbridge/dev.h>
-
-
-/* ----------------------------------- Link Driver */
-#include <dspbridge/dspdeh.h>
-
-/* ----------------------------------- This */
-#include "_deh.h"
-#include <dspbridge/cfg.h>
-#include "_tiomap.h"
-#include "mmu_fault.h"
-
-/*
- * ======== mmu_fault_dpc ========
- * Deferred procedure call to handle DSP MMU fault.
- */
-void mmu_fault_dpc(IN unsigned long pRefData)
-{
- struct deh_mgr *hdeh_mgr = (struct deh_mgr *)pRefData;
-
- if (hdeh_mgr)
- bridge_deh_notify(hdeh_mgr, DSP_MMUFAULT, 0L);
-
-}
-
-/*
- * ======== mmu_fault_isr ========
- * ISR to be triggered by a DSP MMU fault interrupt.
- */
-int mmu_fault_isr(struct iommu *mmu)
-
-{
- struct deh_mgr *dm;
- u32 da;
-
- dev_get_deh_mgr(dev_get_first(), &dm);
-
- if (!dm)
- return -EPERM;
-
- da = iommu_read_reg(mmu, MMU_FAULT_AD);
- iommu_write_reg(mmu, 0, MMU_IRQENABLE);
- dm->err_info.dw_val1 = da;
- tasklet_schedule(&dm->dpc_tasklet);
-
- return 0;
-}
diff --git a/drivers/dsp/bridge/core/mmu_fault.h b/drivers/dsp/bridge/core/mmu_fault.h
deleted file mode 100644
index df3fba6..0000000
--- a/drivers/dsp/bridge/core/mmu_fault.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * mmu_fault.h
- *
- * DSP-BIOS Bridge driver support functions for TI OMAP processors.
- *
- * Defines DSP MMU fault handling functions.
- *
- * Copyright (C) 2005-2006 Texas Instruments, Inc.
- *
- * 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 MMU_FAULT_
-#define MMU_FAULT_
-
-/*
- * ======== mmu_fault_dpc ========
- * Deferred procedure call to handle DSP MMU fault.
- */
-void mmu_fault_dpc(IN unsigned long pRefData);
-
-/*
- * ======== mmu_fault_isr ========
- * ISR to be triggered by a DSP MMU fault interrupt.
- */
-int mmu_fault_isr(struct iommu *mmu);
-
-
-#endif /* MMU_FAULT_ */
diff --git a/drivers/dsp/bridge/core/tiomap3430.c b/drivers/dsp/bridge/core/tiomap3430.c
index 9b6293b..aa6e999 100644
--- a/drivers/dsp/bridge/core/tiomap3430.c
+++ b/drivers/dsp/bridge/core/tiomap3430.c
@@ -53,7 +53,6 @@
#include "_tiomap.h"
#include "_tiomap_pwr.h"
#include "tiomap_io.h"
-#include "mmu_fault.h"
/* Offset in shared mem to write to in order to synchronize start with DSP */
#define SHMSYNCOFFSET 4 /* GPP byte offset */
@@ -369,8 +368,8 @@ static int bridge_brd_start(struct bridge_dev_context *hDevContext,
mmu = dev_context->dsp_mmu;
if (mmu)
- iommu_put(mmu);
- mmu = iommu_get("iva2");
+ dsp_mmu_exit(mmu);
+ mmu = dsp_mmu_init();
if (IS_ERR(mmu)) {
pr_err("Error in iommu_get %ld\n", PTR_ERR(mmu));
@@ -379,7 +378,6 @@ static int bridge_brd_start(struct bridge_dev_context *hDevContext,
goto end;
}
dev_context->dsp_mmu = mmu;
- mmu->isr = mmu_fault_isr;
sm_sg = dev_context->sh_s;
sm_sg->seg0_da = iommu_kmap(mmu, sm_sg->seg0_da, sm_sg->seg0_pa,
@@ -612,7 +610,7 @@ static int bridge_brd_stop(struct bridge_dev_context *hDevContext)
iommu_kunmap(dev_context->dsp_mmu,
dev_context->sh_s->seg1_da);
}
- iommu_put(dev_context->dsp_mmu);
+ dsp_mmu_exit(dev_context->dsp_mmu);
dev_context->dsp_mmu = NULL;
}
@@ -673,7 +671,7 @@ static int bridge_brd_delete(struct bridge_dev_context *hDevContext)
iommu_kunmap(dev_context->dsp_mmu,
dev_context->sh_s->seg1_da);
}
- iommu_put(dev_context->dsp_mmu);
+ dsp_mmu_exit(dev_context->dsp_mmu);
dev_context->dsp_mmu = NULL;
}
@@ -987,107 +985,6 @@ static int bridge_brd_mem_write(struct bridge_dev_context *hDevContext,
return status;
}
-/**
- * user_to_dsp_map() - maps user to dsp virtual address
- * @mmu: Pointer to iommu handle.
- * @uva: Virtual user space address.
- * @da DSP address
- * @size Buffer size to map.
- * @usr_pgs struct page array pointer where the user pages will be stored
- *
- * This function maps a user space buffer into DSP virtual address.
- *
- */
-
-int user_to_dsp_map(struct iommu *mmu, u32 uva, u32 da, u32 size,
- struct page **usr_pgs)
-
-{
- int res, w;
- unsigned pages, i;
- struct vm_area_struct *vma;
- struct mm_struct *mm = current->mm;
- struct sg_table *sgt;
- struct scatterlist *sg;
-
- if (!size || !usr_pgs)
- return -EINVAL;
-
- pages = size / PG_SIZE4K;
-
- down_read(&mm->mmap_sem);
- vma = find_vma(mm, uva);
- while (vma && (uva + size > vma->vm_end))
- vma = find_vma(mm, vma->vm_end + 1);
-
- if (!vma) {
- pr_err("%s: Failed to get VMA region for 0x%x (%d)\n",
- __func__, uva, size);
- up_read(&mm->mmap_sem);
- return -EINVAL;
- }
- if (vma->vm_flags & (VM_WRITE | VM_MAYWRITE))
- w = 1;
- res = get_user_pages(current, mm, uva, pages, w, 1, usr_pgs, NULL);
- up_read(&mm->mmap_sem);
- if (res < 0)
- return res;
-
- sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
-
- if (!sgt)
- return -ENOMEM;
-
- res = sg_alloc_table(sgt, pages, GFP_KERNEL);
-
- if (res < 0)
- goto err_sg;
-
- for_each_sg(sgt->sgl, sg, sgt->nents, i)
- sg_set_page(sg, usr_pgs[i], PAGE_SIZE, 0);
-
- da = iommu_vmap(mmu, da, sgt, IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32);
-
- if (IS_ERR_VALUE(da)) {
- res = (int)da;
- goto err_map;
- }
- return 0;
-
-err_map:
- sg_free_table(sgt);
-err_sg:
- kfree(sgt);
- return res;
-}
-
-/**
- * user_to_dsp_unmap() - unmaps DSP virtual buffer.
- * @mmu: Pointer to iommu handle.
- * @da DSP address
- *
- * This function unmaps a user space buffer into DSP virtual address.
- *
- */
-int user_to_dsp_unmap(struct iommu *mmu, u32 da)
-{
- unsigned i;
- struct sg_table *sgt;
- struct scatterlist *sg;
-
- sgt = iommu_vunmap(mmu, da);
- if (!sgt)
- return -EFAULT;
-
- for_each_sg(sgt->sgl, sg, sgt->nents, i)
- put_page(sg_page(sg));
-
- sg_free_table(sgt);
- kfree(sgt);
-
- return 0;
-}
-
/*
* ======== wait_for_start ========
* Wait for the singal from DSP that it has started, or time out.
diff --git a/drivers/dsp/bridge/core/ue_deh.c b/drivers/dsp/bridge/core/ue_deh.c
index 72cc6c0..4a00d09 100644
--- a/drivers/dsp/bridge/core/ue_deh.c
+++ b/drivers/dsp/bridge/core/ue_deh.c
@@ -18,11 +18,11 @@
/* ----------------------------------- Host OS */
#include <dspbridge/host_os.h>
-#include <plat/iommu.h>
/* ----------------------------------- DSP/BIOS Bridge */
#include <dspbridge/std.h>
#include <dspbridge/dbdefs.h>
+#include <dspbridge/dsp-mmu.h>
/* ----------------------------------- Trace & Debug */
#include <dspbridge/dbc.h>
@@ -42,14 +42,11 @@
#include <dspbridge/wdt.h>
/* ----------------------------------- This */
-#include "mmu_fault.h"
#include "_tiomap.h"
#include "_deh.h"
#include "_tiomap_pwr.h"
#include <dspbridge/io_sm.h>
-static void *dummy_va_addr;
-
int bridge_deh_create(struct deh_mgr **ret_deh_mgr,
struct dev_object *hdev_obj)
{
@@ -63,7 +60,6 @@ int bridge_deh_create(struct deh_mgr **ret_deh_mgr,
/* Get Bridge context info. */
dev_get_bridge_context(hdev_obj, &hbridge_context);
DBC_ASSERT(hbridge_context);
- dummy_va_addr = NULL;
/* Allocate IO manager object: */
deh_mgr = kzalloc(sizeof(struct deh_mgr), GFP_KERNEL);
if (!deh_mgr) {
@@ -80,9 +76,6 @@ int bridge_deh_create(struct deh_mgr **ret_deh_mgr,
goto err;
}
- /* Create a MMUfault DPC */
- tasklet_init(&deh_mgr->dpc_tasklet, mmu_fault_dpc, (u32) deh_mgr);
-
/* Fill in context structure */
deh_mgr->hbridge_context = hbridge_context;
deh_mgr->err_info.dw_err_mask = 0L;
@@ -107,17 +100,12 @@ int bridge_deh_destroy(struct deh_mgr *deh_mgr)
if (!deh_mgr)
return -EFAULT;
- /* Release dummy VA buffer */
- bridge_deh_release_dummy_mem();
/* If notification object exists, delete it */
if (deh_mgr->ntfy_obj) {
ntfy_delete(deh_mgr->ntfy_obj);
kfree(deh_mgr->ntfy_obj);
}
- /* Free DPC object */
- tasklet_kill(&deh_mgr->dpc_tasklet);
-
/* Deallocate the DEH manager object */
kfree(deh_mgr);
@@ -145,10 +133,7 @@ int bridge_deh_register_notify(struct deh_mgr *deh_mgr, u32 event_mask,
void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
{
struct bridge_dev_context *dev_context;
- u32 hw_mmu_max_tlb_count = 31;
struct cfg_hostres *resources;
- u32 fault_addr, tmp;
- struct iotlb_entry e;
if (!deh_mgr)
return;
@@ -171,49 +156,8 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
dump_dsp_stack(dev_context);
break;
case DSP_MMUFAULT:
- /* MMU fault routine should have set err info structure. */
- fault_addr = iommu_read_reg(dev_context->dsp_mmu,
- MMU_FAULT_AD);
-
- deh_mgr->err_info.dw_err_mask = DSP_MMUFAULT;
- dev_err(bridge, "%s: %s, err_info = 0x%x\n",
- __func__, "DSP_MMUFAULT", dwErrInfo);
- dev_info(bridge, "%s: %s, high=0x%x, low=0x%x, "
- "fault=0x%x\n", __func__, "DSP_MMUFAULT",
- (unsigned int) deh_mgr->err_info.dw_val1,
- (unsigned int) deh_mgr->err_info.dw_val2,
- (unsigned int) fault_addr);
- dummy_va_addr = (void*)__get_free_page(GFP_ATOMIC);
- dev_context = (struct bridge_dev_context *)
- deh_mgr->hbridge_context;
-
- print_dsp_trace_buffer(dev_context);
- dump_dl_modules(dev_context);
-
- /*
- * Reset the dynamic mmu index to fixed count if it exceeds
- * 31. So that the dynmmuindex is always between the range of
- * standard/fixed entries and 31.
- */
- if (dev_context->num_tlb_entries >
- hw_mmu_max_tlb_count) {
- dev_context->num_tlb_entries =
- dev_context->fixed_tlb_entries;
- }
- dsp_iotlb_init(&e, fault_addr & PAGE_MASK,
- virt_to_phys(dummy_va_addr), IOVMF_PGSZ_4K);
- load_iotlb_entry(dev_context->dsp_mmu, &e);
-
-
- dsp_clk_enable(DSP_CLK_GPT8);
-
- dsp_gpt_wait_overflow(DSP_CLK_GPT8, 0xfffffffe);
-
- tmp = iommu_read_reg(dev_context->dsp_mmu, MMU_IRQSTATUS);
- iommu_write_reg(dev_context->dsp_mmu, tmp, MMU_IRQSTATUS);
-
- dump_dsp_stack(deh_mgr->hbridge_context);
- dsp_clk_disable(DSP_CLK_GPT8);
+ dev_err(bridge, "%s: %s, fault address = 0x%x\n",
+ __func__, "DSP_MMUFault", dwErrInfo);
break;
#ifdef CONFIG_BRIDGE_NTFY_PWRERR
case DSP_PWRERROR:
@@ -276,9 +220,3 @@ int bridge_deh_get_info(struct deh_mgr *deh_mgr,
return 0;
}
-
-void bridge_deh_release_dummy_mem(void)
-{
- free_page((unsigned long)dummy_va_addr);
- dummy_va_addr = NULL;
-}
diff --git a/drivers/dsp/bridge/rmgr/proc.c b/drivers/dsp/bridge/rmgr/proc.c
index 299bef3..4f10a41 100644
--- a/drivers/dsp/bridge/rmgr/proc.c
+++ b/drivers/dsp/bridge/rmgr/proc.c
@@ -1634,11 +1634,7 @@ int proc_stop(void *hprocessor)
status = -EFAULT;
goto func_end;
}
- if (DSP_SUCCEEDED((*p_proc_object->intf_fxns->pfn_brd_status)
- (p_proc_object->hbridge_context, &brd_state))) {
- if (brd_state == BRD_ERROR)
- bridge_deh_release_dummy_mem();
- }
+
/* check if there are any running nodes */
status = dev_get_node_manager(p_proc_object->hdev_obj, &hnode_mgr);
if (DSP_SUCCEEDED(status) && hnode_mgr) {
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists