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Merge branch 'for-joerg' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/linux into arm/omap

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This commit is contained in:
Joerg Roedel 2011-12-05 16:10:46 +01:00
parent 5611cc4572 fabdbca8c9
commit 608205c082
10 changed files with 107 additions and 94 deletions
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7
arch/arm/mach-omap2/devices.c
View file

@ -28,6 +28,7 @@
#include <plat/board.h>
#include <plat/mcbsp.h>
#include <plat/mmc.h>
#include <plat/iommu.h>
#include <plat/dma.h>
#include <plat/omap_hwmod.h>
#include <plat/omap_device.h>
@ -211,9 +212,15 @@ static struct platform_device omap3isp_device = {
.resource = omap3isp_resources,
};
static struct omap_iommu_arch_data omap3_isp_iommu = {
.name = "isp",
};
int omap3_init_camera(struct isp_platform_data *pdata)
{
omap3isp_device.dev.platform_data = pdata;
omap3isp_device.dev.archdata.iommu = &omap3_isp_iommu;
return platform_device_register(&omap3isp_device);
}

31
arch/arm/plat-omap/include/plat/iommu.h
View file

@ -111,6 +111,32 @@ struct iommu_platform_data {
u32 da_end;
};
/**
* struct iommu_arch_data - omap iommu private data
* @name: name of the iommu device
* @iommu_dev: handle of the iommu device
*
* This is an omap iommu private data object, which binds an iommu user
* to its iommu device. This object should be placed at the iommu user's
* dev_archdata so generic IOMMU API can be used without having to
* utilize omap-specific plumbing anymore.
*/
struct omap_iommu_arch_data {
const char *name;
struct omap_iommu *iommu_dev;
};
/**
* dev_to_omap_iommu() - retrieves an omap iommu object from a user device
* @dev: iommu client device
*/
static inline struct omap_iommu *dev_to_omap_iommu(struct device *dev)
{
struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
return arch_data->iommu_dev;
}
/* IOMMU errors */
#define OMAP_IOMMU_ERR_TLB_MISS (1 << 0)
#define OMAP_IOMMU_ERR_TRANS_FAULT (1 << 1)
@ -163,8 +189,8 @@ extern int omap_iommu_set_isr(const char *name,
void *priv),
void *isr_priv);
extern void omap_iommu_save_ctx(struct omap_iommu *obj);
extern void omap_iommu_restore_ctx(struct omap_iommu *obj);
extern void omap_iommu_save_ctx(struct device *dev);
extern void omap_iommu_restore_ctx(struct device *dev);
extern int omap_install_iommu_arch(const struct iommu_functions *ops);
extern void omap_uninstall_iommu_arch(const struct iommu_functions *ops);
@ -176,6 +202,5 @@ extern ssize_t
omap_iommu_dump_ctx(struct omap_iommu *obj, char *buf, ssize_t len);
extern size_t
omap_dump_tlb_entries(struct omap_iommu *obj, char *buf, ssize_t len);
struct device *omap_find_iommu_device(const char *name);
#endif /* __MACH_IOMMU_H */

12
arch/arm/plat-omap/include/plat/iovmm.h
View file

@ -72,18 +72,18 @@ struct iovm_struct {
#define IOVMF_DA_FIXED (1 << (4 + IOVMF_SW_SHIFT))
extern struct iovm_struct *omap_find_iovm_area(struct omap_iommu *obj, u32 da);
extern struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da);
extern u32
omap_iommu_vmap(struct iommu_domain *domain, struct omap_iommu *obj, u32 da,
omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da,
const struct sg_table *sgt, u32 flags);
extern struct sg_table *omap_iommu_vunmap(struct iommu_domain *domain,
struct omap_iommu *obj, u32 da);
struct device *dev, u32 da);
extern u32
omap_iommu_vmalloc(struct iommu_domain *domain, struct omap_iommu *obj,
omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev,
u32 da, size_t bytes, u32 flags);
extern void
omap_iommu_vfree(struct iommu_domain *domain, struct omap_iommu *obj,
omap_iommu_vfree(struct iommu_domain *domain, struct device *dev,
const u32 da);
extern void *omap_da_to_va(struct omap_iommu *obj, u32 da);
extern void *omap_da_to_va(struct device *dev, u32 da);
#endif /* __IOMMU_MMAP_H */

58
drivers/iommu/omap-iommu.c
View file

@ -86,20 +86,24 @@ EXPORT_SYMBOL_GPL(omap_uninstall_iommu_arch);
/**
* omap_iommu_save_ctx - Save registers for pm off-mode support
* @obj: target iommu
* @dev: client device
**/
void omap_iommu_save_ctx(struct omap_iommu *obj)
void omap_iommu_save_ctx(struct device *dev)
{
struct omap_iommu *obj = dev_to_omap_iommu(dev);
arch_iommu->save_ctx(obj);
}
EXPORT_SYMBOL_GPL(omap_iommu_save_ctx);
/**
* omap_iommu_restore_ctx - Restore registers for pm off-mode support
* @obj: target iommu
* @dev: client device
**/
void omap_iommu_restore_ctx(struct omap_iommu *obj)
void omap_iommu_restore_ctx(struct device *dev)
{
struct omap_iommu *obj = dev_to_omap_iommu(dev);
arch_iommu->restore_ctx(obj);
}
EXPORT_SYMBOL_GPL(omap_iommu_restore_ctx);
@ -819,36 +823,24 @@ static int device_match_by_alias(struct device *dev, void *data)
return strcmp(obj->name, name) == 0;
}
/**
* omap_find_iommu_device() - find an omap iommu device by name
* @name: name of the iommu device
*
* The generic iommu API requires the caller to provide the device
* he wishes to attach to a certain iommu domain.
*
* Drivers generally should not bother with this as it should just
* be taken care of by the DMA-API using dev_archdata.
*
* This function is provided as an interim solution until the latter
* materializes, and omap3isp is fully migrated to the DMA-API.
*/
struct device *omap_find_iommu_device(const char *name)
{
return driver_find_device(&omap_iommu_driver.driver, NULL,
(void *)name,
device_match_by_alias);
}
EXPORT_SYMBOL_GPL(omap_find_iommu_device);
/**
* omap_iommu_attach() - attach iommu device to an iommu domain
* @dev: target omap iommu device
* @name: name of target omap iommu device
* @iopgd: page table
**/
static struct omap_iommu *omap_iommu_attach(struct device *dev, u32 *iopgd)
static struct omap_iommu *omap_iommu_attach(const char *name, u32 *iopgd)
{
int err = -ENOMEM;
struct omap_iommu *obj = to_iommu(dev);
struct device *dev;
struct omap_iommu *obj;
dev = driver_find_device(&omap_iommu_driver.driver, NULL,
(void *)name,
device_match_by_alias);
if (!dev)
return NULL;
obj = to_iommu(dev);
spin_lock(&obj->iommu_lock);
@ -1069,6 +1061,7 @@ omap_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
{
struct omap_iommu_domain *omap_domain = domain->priv;
struct omap_iommu *oiommu;
struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
int ret = 0;
spin_lock(&omap_domain->lock);
@ -1081,14 +1074,14 @@ omap_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
}
/* get a handle to and enable the omap iommu */
oiommu = omap_iommu_attach(dev, omap_domain->pgtable);
oiommu = omap_iommu_attach(arch_data->name, omap_domain->pgtable);
if (IS_ERR(oiommu)) {
ret = PTR_ERR(oiommu);
dev_err(dev, "can't get omap iommu: %d\n", ret);
goto out;
}
omap_domain->iommu_dev = oiommu;
omap_domain->iommu_dev = arch_data->iommu_dev = oiommu;
oiommu->domain = domain;
out:
@ -1100,7 +1093,8 @@ static void omap_iommu_detach_dev(struct iommu_domain *domain,
struct device *dev)
{
struct omap_iommu_domain *omap_domain = domain->priv;
struct omap_iommu *oiommu = to_iommu(dev);
struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
struct omap_iommu *oiommu = dev_to_omap_iommu(dev);
spin_lock(&omap_domain->lock);
@ -1114,7 +1108,7 @@ static void omap_iommu_detach_dev(struct iommu_domain *domain,
omap_iommu_detach(oiommu);
omap_domain->iommu_dev = NULL;
omap_domain->iommu_dev = arch_data->iommu_dev = NULL;
out:
spin_unlock(&omap_domain->lock);

31
drivers/iommu/omap-iovmm.c
View file

@ -231,12 +231,14 @@ static struct iovm_struct *__find_iovm_area(struct omap_iommu *obj,
/**
* omap_find_iovm_area - find iovma which includes @da
* @dev: client device
* @da: iommu device virtual address
*
* Find the existing iovma starting at @da
*/
struct iovm_struct *omap_find_iovm_area(struct omap_iommu *obj, u32 da)
struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da)
{
struct omap_iommu *obj = dev_to_omap_iommu(dev);
struct iovm_struct *area;
mutex_lock(&obj->mmap_lock);
@ -343,14 +345,15 @@ static void free_iovm_area(struct omap_iommu *obj, struct iovm_struct *area)
/**
* omap_da_to_va - convert (d) to (v)
* @obj: objective iommu
* @dev: client device
* @da: iommu device virtual address
* @va: mpu virtual address
*
* Returns mpu virtual addr which corresponds to a given device virtual addr
*/
void *omap_da_to_va(struct omap_iommu *obj, u32 da)
void *omap_da_to_va(struct device *dev, u32 da)
{
struct omap_iommu *obj = dev_to_omap_iommu(dev);
void *va = NULL;
struct iovm_struct *area;
@ -582,16 +585,18 @@ __iommu_vmap(struct iommu_domain *domain, struct omap_iommu *obj,
/**
* omap_iommu_vmap - (d)-(p)-(v) address mapper
* @obj: objective iommu
* @domain: iommu domain
* @dev: client device
* @sgt: address of scatter gather table
* @flags: iovma and page property
*
* Creates 1-n-1 mapping with given @sgt and returns @da.
* All @sgt element must be io page size aligned.
*/
u32 omap_iommu_vmap(struct iommu_domain *domain, struct omap_iommu *obj, u32 da,
u32 omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da,
const struct sg_table *sgt, u32 flags)
{
struct omap_iommu *obj = dev_to_omap_iommu(dev);
size_t bytes;
void *va = NULL;
@ -622,15 +627,17 @@ EXPORT_SYMBOL_GPL(omap_iommu_vmap);
/**
* omap_iommu_vunmap - release virtual mapping obtained by 'omap_iommu_vmap()'
* @obj: objective iommu
* @domain: iommu domain
* @dev: client device
* @da: iommu device virtual address
*
* Free the iommu virtually contiguous memory area starting at
* @da, which was returned by 'omap_iommu_vmap()'.
*/
struct sg_table *
omap_iommu_vunmap(struct iommu_domain *domain, struct omap_iommu *obj, u32 da)
omap_iommu_vunmap(struct iommu_domain *domain, struct device *dev, u32 da)
{
struct omap_iommu *obj = dev_to_omap_iommu(dev);
struct sg_table *sgt;
/*
* 'sgt' is allocated before 'omap_iommu_vmalloc()' is called.
@ -647,7 +654,7 @@ EXPORT_SYMBOL_GPL(omap_iommu_vunmap);
/**
* omap_iommu_vmalloc - (d)-(p)-(v) address allocator and mapper
* @obj: objective iommu
* @dev: client device
* @da: contiguous iommu virtual memory
* @bytes: allocation size
* @flags: iovma and page property
@ -656,9 +663,10 @@ EXPORT_SYMBOL_GPL(omap_iommu_vunmap);
* @da again, which might be adjusted if 'IOVMF_DA_FIXED' is not set.
*/
u32
omap_iommu_vmalloc(struct iommu_domain *domain, struct omap_iommu *obj, u32 da,
omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev, u32 da,
size_t bytes, u32 flags)
{
struct omap_iommu *obj = dev_to_omap_iommu(dev);
void *va;
struct sg_table *sgt;
@ -698,15 +706,16 @@ EXPORT_SYMBOL_GPL(omap_iommu_vmalloc);
/**
* omap_iommu_vfree - release memory allocated by 'omap_iommu_vmalloc()'
* @obj: objective iommu
* @dev: client device
* @da: iommu device virtual address
*
* Frees the iommu virtually continuous memory area starting at
* @da, as obtained from 'omap_iommu_vmalloc()'.
*/
void omap_iommu_vfree(struct iommu_domain *domain, struct omap_iommu *obj,
void omap_iommu_vfree(struct iommu_domain *domain, struct device *dev,
const u32 da)
{
struct omap_iommu *obj = dev_to_omap_iommu(dev);
struct sg_table *sgt;
sgt = unmap_vm_area(domain, obj, da, vfree,

30
drivers/media/video/omap3isp/isp.c
View file

@ -80,13 +80,6 @@
#include "isph3a.h"
#include "isphist.h"
/*
* this is provided as an interim solution until omap3isp doesn't need
* any omap-specific iommu API
*/
#define to_iommu(dev) \
(struct omap_iommu *)platform_get_drvdata(to_platform_device(dev))
static unsigned int autoidle;
module_param(autoidle, int, 0444);
MODULE_PARM_DESC(autoidle, "Enable OMAP3ISP AUTOIDLE support");
@ -1114,8 +1107,7 @@ isp_restore_context(struct isp_device *isp, struct isp_reg *reg_list)
static void isp_save_ctx(struct isp_device *isp)
{
isp_save_context(isp, isp_reg_list);
if (isp->iommu)
omap_iommu_save_ctx(isp->iommu);
omap_iommu_save_ctx(isp->dev);
}
/*
@ -1128,8 +1120,7 @@ static void isp_save_ctx(struct isp_device *isp)
static void isp_restore_ctx(struct isp_device *isp)
{
isp_restore_context(isp, isp_reg_list);
if (isp->iommu)
omap_iommu_restore_ctx(isp->iommu);
omap_iommu_restore_ctx(isp->dev);
omap3isp_ccdc_restore_context(isp);
omap3isp_preview_restore_context(isp);
}
@ -1983,7 +1974,7 @@ static int isp_remove(struct platform_device *pdev)
isp_cleanup_modules(isp);
omap3isp_get(isp);
iommu_detach_device(isp->domain, isp->iommu_dev);
iommu_detach_device(isp->domain, &pdev->dev);
iommu_domain_free(isp->domain);
omap3isp_put(isp);
@ -2131,17 +2122,6 @@ static int isp_probe(struct platform_device *pdev)
}
}
/* IOMMU */
isp->iommu_dev = omap_find_iommu_device("isp");
if (!isp->iommu_dev) {
dev_err(isp->dev, "omap_find_iommu_device failed\n");
ret = -ENODEV;
goto error_isp;
}
/* to be removed once iommu migration is complete */
isp->iommu = to_iommu(isp->iommu_dev);
isp->domain = iommu_domain_alloc(pdev->dev.bus);
if (!isp->domain) {
dev_err(isp->dev, "can't alloc iommu domain\n");
@ -2149,7 +2129,7 @@ static int isp_probe(struct platform_device *pdev)
goto error_isp;
}
ret = iommu_attach_device(isp->domain, isp->iommu_dev);
ret = iommu_attach_device(isp->domain, &pdev->dev);
if (ret) {
dev_err(&pdev->dev, "can't attach iommu device: %d\n", ret);
goto free_domain;
@ -2188,7 +2168,7 @@ static int isp_probe(struct platform_device *pdev)
error_irq:
free_irq(isp->irq_num, isp);
detach_dev:
iommu_detach_device(isp->domain, isp->iommu_dev);
iommu_detach_device(isp->domain, &pdev->dev);
free_domain:
iommu_domain_free(isp->domain);
error_isp:

2
drivers/media/video/omap3isp/isp.h
View file

@ -212,9 +212,7 @@ struct isp_device {
unsigned int sbl_resources;
unsigned int subclk_resources;
struct omap_iommu *iommu;
struct iommu_domain *domain;
struct device *iommu_dev;
struct isp_platform_callback platform_cb;
};

18
drivers/media/video/omap3isp/ispccdc.c
View file

@ -366,7 +366,7 @@ static void ccdc_lsc_free_request(struct isp_ccdc_device *ccdc,
dma_unmap_sg(isp->dev, req->iovm->sgt->sgl,
req->iovm->sgt->nents, DMA_TO_DEVICE);
if (req->table)
omap_iommu_vfree(isp->domain, isp->iommu, req->table);
omap_iommu_vfree(isp->domain, isp->dev, req->table);
kfree(req);
}
@ -438,7 +438,7 @@ static int ccdc_lsc_config(struct isp_ccdc_device *ccdc,
req->enable = 1;
req->table = omap_iommu_vmalloc(isp->domain, isp->iommu, 0,
req->table = omap_iommu_vmalloc(isp->domain, isp->dev, 0,
req->config.size, IOMMU_FLAG);
if (IS_ERR_VALUE(req->table)) {
req->table = 0;
@ -446,7 +446,7 @@ static int ccdc_lsc_config(struct isp_ccdc_device *ccdc,
goto done;
}
req->iovm = omap_find_iovm_area(isp->iommu, req->table);
req->iovm = omap_find_iovm_area(isp->dev, req->table);
if (req->iovm == NULL) {
ret = -ENOMEM;
goto done;
@ -462,7 +462,7 @@ static int ccdc_lsc_config(struct isp_ccdc_device *ccdc,
dma_sync_sg_for_cpu(isp->dev, req->iovm->sgt->sgl,
req->iovm->sgt->nents, DMA_TO_DEVICE);
table = omap_da_to_va(isp->iommu, req->table);
table = omap_da_to_va(isp->dev, req->table);
if (copy_from_user(table, config->lsc, req->config.size)) {
ret = -EFAULT;
goto done;
@ -734,15 +734,15 @@ static int ccdc_config(struct isp_ccdc_device *ccdc,
* already done by omap_iommu_vmalloc().
*/
size = ccdc->fpc.fpnum * 4;
table_new = omap_iommu_vmalloc(isp->domain, isp->iommu,
table_new = omap_iommu_vmalloc(isp->domain, isp->dev,
0, size, IOMMU_FLAG);
if (IS_ERR_VALUE(table_new))
return -ENOMEM;
if (copy_from_user(omap_da_to_va(isp->iommu, table_new),
if (copy_from_user(omap_da_to_va(isp->dev, table_new),
(__force void __user *)
ccdc->fpc.fpcaddr, size)) {
omap_iommu_vfree(isp->domain, isp->iommu,
omap_iommu_vfree(isp->domain, isp->dev,
table_new);
return -EFAULT;
}
@ -753,7 +753,7 @@ static int ccdc_config(struct isp_ccdc_device *ccdc,
ccdc_configure_fpc(ccdc);
if (table_old != 0)
omap_iommu_vfree(isp->domain, isp->iommu, table_old);
omap_iommu_vfree(isp->domain, isp->dev, table_old);
}
return ccdc_lsc_config(ccdc, ccdc_struct);
@ -2309,7 +2309,7 @@ void omap3isp_ccdc_cleanup(struct isp_device *isp)
ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue);
if (ccdc->fpc.fpcaddr != 0)
omap_iommu_vfree(isp->domain, isp->iommu, ccdc->fpc.fpcaddr);
omap_iommu_vfree(isp->domain, isp->dev, ccdc->fpc.fpcaddr);
mutex_destroy(&ccdc->ioctl_lock);
}

8
drivers/media/video/omap3isp/ispstat.c
View file

@ -366,7 +366,7 @@ static void isp_stat_bufs_free(struct ispstat *stat)
dma_unmap_sg(isp->dev, buf->iovm->sgt->sgl,
buf->iovm->sgt->nents,
DMA_FROM_DEVICE);
omap_iommu_vfree(isp->domain, isp->iommu,
omap_iommu_vfree(isp->domain, isp->dev,
buf->iommu_addr);
} else {
if (!buf->virt_addr)
@ -400,7 +400,7 @@ static int isp_stat_bufs_alloc_iommu(struct ispstat *stat, unsigned int size)
struct iovm_struct *iovm;
WARN_ON(buf->dma_addr);
buf->iommu_addr = omap_iommu_vmalloc(isp->domain, isp->iommu, 0,
buf->iommu_addr = omap_iommu_vmalloc(isp->domain, isp->dev, 0,
size, IOMMU_FLAG);
if (IS_ERR((void *)buf->iommu_addr)) {
dev_err(stat->isp->dev,
@ -410,7 +410,7 @@ static int isp_stat_bufs_alloc_iommu(struct ispstat *stat, unsigned int size)
return -ENOMEM;
}
iovm = omap_find_iovm_area(isp->iommu, buf->iommu_addr);
iovm = omap_find_iovm_area(isp->dev, buf->iommu_addr);
if (!iovm ||
!dma_map_sg(isp->dev, iovm->sgt->sgl, iovm->sgt->nents,
DMA_FROM_DEVICE)) {
@ -419,7 +419,7 @@ static int isp_stat_bufs_alloc_iommu(struct ispstat *stat, unsigned int size)
}
buf->iovm = iovm;
buf->virt_addr = omap_da_to_va(stat->isp->iommu,
buf->virt_addr = omap_da_to_va(stat->isp->dev,
(u32)buf->iommu_addr);
buf->empty = 1;
dev_dbg(stat->isp->dev, "%s: buffer[%d] allocated."

4
drivers/media/video/omap3isp/ispvideo.c
View file

@ -452,7 +452,7 @@ ispmmu_vmap(struct isp_device *isp, const struct scatterlist *sglist, int sglen)
sgt->nents = sglen;
sgt->orig_nents = sglen;
da = omap_iommu_vmap(isp->domain, isp->iommu, 0, sgt, IOMMU_FLAG);
da = omap_iommu_vmap(isp->domain, isp->dev, 0, sgt, IOMMU_FLAG);
if (IS_ERR_VALUE(da))
kfree(sgt);
@ -468,7 +468,7 @@ static void ispmmu_vunmap(struct isp_device *isp, dma_addr_t da)
{
struct sg_table *sgt;
sgt = omap_iommu_vunmap(isp->domain, isp->iommu, (u32)da);
sgt = omap_iommu_vunmap(isp->domain, isp->dev, (u32)da);
kfree(sgt);
}