Commit Graph

4 Commits

Author SHA1 Message Date
Laurent Pinchart
b11762f843 iommu/shmobile: Use devm_ioremap_resource()
Replace the devm_ioremap_nocache() call with devm_ioremap_resource().
This simplifies error checking.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2014-04-17 12:16:12 +02:00
Laurent Pinchart
ac1ef1fed3 iommu/shmobile: Don't ignore the ipmmu_iommu_init() return value
The function can fail, don't ignore its error value.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2014-04-17 12:16:12 +02:00
Laurent Pinchart
e87c621dce iommu/shmobile: Turn the flush_lock mutex into a spinlock
The lock is taken in atomic context, replace it with a spinlock.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
2014-01-07 15:35:25 +01:00
Hideki EIRAKU
c2c460f7c1 iommu/shmobile: Add iommu driver for Renesas IPMMU modules
This is the Renesas IPMMU driver and IOMMU API implementation.

The IPMMU module supports the MMU function and the PMB function.  The
MMU function provides address translation by pagetable compatible with
ARMv6.  The PMB function provides address translation including
tile-linear translation.  This patch implements the MMU function.

The iommu driver does not register a platform driver directly because:
- the register space of the MMU function and the PMB function
  have a common register (used for settings flush), so they should ideally
  have a way to appropriately share this register.
- the MMU function uses the IOMMU API while the PMB function does not.
- the two functions may be used independently.

Signed-off-by: Hideki EIRAKU <hdk@igel.co.jp>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-06 10:57:25 +01:00