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firmware: tegra: Add support iosys-map support for IVC

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Linux v6.2 update the Tegra IVC driver to use iosys-map and this broke
support for the IVC EXT driver. Update the IVC EXT driver to support
iosys-map if the kernel supports this version of the Tegra IVC driver.

Bug 4221847

Change-Id: I1f1ddb1cc4312cb2359373b53287c110831b473c
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2996208
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Jon Hunter
2023-10-09 11:17:59 +01:00
committed by mobile promotions
parent 5c59fead46
commit 4e8ed5f7b7
3 changed files with 168 additions and 64 deletions
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87
include/soc/tegra/ivc_ext.h
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@@ -6,11 +6,11 @@
#ifndef __TEGRA_IVC_EXT_H
#define __TEGRA_IVC_EXT_H
#include <nvidia/conftest.h>
#include <linux/types.h>
#include <linux/version.h>
#include <soc/tegra/ivc-priv.h>
#if (KERNEL_VERSION(6, 2, 0) > LINUX_VERSION_CODE)
/**
* tegra_ivc_channel_notified - notifies the peer device
* @ivc pointer of the IVC channel
@@ -29,6 +29,17 @@ int tegra_ivc_channel_notified(struct tegra_ivc *ivc);
*/
void tegra_ivc_channel_reset(struct tegra_ivc *ivc);
#if defined(NV_TEGRA_IVC_STRUCT_HAS_IOSYS_MAP)
/**
* tegra_ivc_empty - Checks whether channel is empty or not
* @map pointer to iosys-map buffer for the IVC channel
*
* Checks whether channel is empty or not to read or write
*
* Returns true if channel is empty to read or write.
*/
bool tegra_ivc_empty(struct tegra_ivc *ivc, struct iosys_map *map);
#else
/**
* tegra_ivc_empty - Checks whether channel is empty or not
* @ivc pointer of the IVC channel
@@ -38,6 +49,7 @@ void tegra_ivc_channel_reset(struct tegra_ivc *ivc);
* Returns true if channel is empty to read or write.
*/
bool tegra_ivc_empty(struct tegra_ivc *ivc, struct tegra_ivc_header *header);
#endif
/**
* tegra_ivc_channel_sync - Syncs the IVC channel accross reboots.
@@ -49,6 +61,17 @@ bool tegra_ivc_empty(struct tegra_ivc *ivc, struct tegra_ivc_header *header);
*/
int tegra_ivc_channel_sync(struct tegra_ivc *ivc);
#if defined(NV_TEGRA_IVC_STRUCT_HAS_IOSYS_MAP)
/**
* tegra_ivc_frames_available - Checks number of available frames.
* @map pointer to iosys-map buffer for the IVC channel
*
* Checks number of available frames.
*
* Returns integer value indicating number of available frames..
*/
uint32_t tegra_ivc_frames_available(struct tegra_ivc *ivc, struct iosys_map *map);
#else
/**
* tegra_ivc_frames_available - Checks number of available frames.
* @ivc pointer of the IVC channel
@@ -58,6 +81,7 @@ int tegra_ivc_channel_sync(struct tegra_ivc *ivc);
* Returns integer value indicating number of available frames..
*/
uint32_t tegra_ivc_frames_available(struct tegra_ivc *ivc, struct tegra_ivc_header *header);
#endif
/**
* tegra_ivc_can_read - Checks whether we can read from ivc channel
@@ -118,64 +142,5 @@ int tegra_ivc_read_peek(struct tegra_ivc *ivc, void __user *usr_buf, void *buf,
* Returns no. of bytes written to ivc channel else return error.
*/
int tegra_ivc_write(struct tegra_ivc *ivc, const void __user *usr_buf, const void *buf, size_t size);
#else
static inline int tegra_ivc_channel_notified(struct tegra_ivc *ivc)
{
return -ENOTSUPP;
}
static inline void tegra_ivc_channel_reset(struct tegra_ivc *ivc)
{
return;
}
static inline bool tegra_ivc_empty(struct tegra_ivc *ivc,
struct tegra_ivc_header *header)
{
return true;
}
static inline int tegra_ivc_channel_sync(struct tegra_ivc *ivc)
{
return -ENOTSUPP;
}
static inline uint32_t tegra_ivc_frames_available(struct tegra_ivc *ivc,
struct tegra_ivc_header *header)
{
return 0;
}
static inline int tegra_ivc_can_read(struct tegra_ivc *ivc)
{
return -ENOTSUPP;
};
static inline int tegra_ivc_can_write(struct tegra_ivc *ivc)
{
return -ENOTSUPP;
};
static inline int tegra_ivc_read(struct tegra_ivc *ivc, void __user *usr_buf,
void *buf, size_t max_read)
{
return -ENOTSUPP;
}
static inline int tegra_ivc_read_peek(struct tegra_ivc *ivc,
void __user *usr_buf, void *buf,
size_t offset, size_t size)
{
return -ENOTSUPP;
};
static inline int tegra_ivc_write(struct tegra_ivc *ivc,
const void __user *usr_buf,
const void *buf, size_t size)
{
return -ENOTSUPP;
};
#endif /* (KERNEL_VERSION(6, 2, 0) > LINUX_VERSION_CODE) */
#endif /* __TEGRA_IVC_EXT_H */