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Message-Id: <20181026134813.7775-6-nsaenzjulienne@suse.de>
Date: Fri, 26 Oct 2018 15:48:00 +0200
From: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To: stefan.wahren@...e.com, eric@...olt.net,
dave.stevenson@...pberrypi.org
Cc: nsaenzjulienne@...e.de, linux-rpi-kernel@...ts.infradead.org,
gregkh@...uxfoundation.org, linux-arm-kernel@...ts.infradead.org,
devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH RFC 05/18] staging: vchiq_arm: get rid of vchi_mh.h
The concept of VCHI_MEM_HANDLE_T is introduced by this header file and
was meant to be used with bulk transfers. After a quick look in
vchiq_core.c it is pretty clear that it actually accomplishes nothing
nor alters the bulk transfers in any way.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
---
.../vc04_services/interface/vchi/vchi.h | 3 --
.../vc04_services/interface/vchi/vchi_mh.h | 42 -------------------
.../interface/vchiq_arm/vchiq_2835_arm.c | 6 +--
.../interface/vchiq_arm/vchiq_arm.c | 27 ++++++------
.../interface/vchiq_arm/vchiq_core.c | 17 ++++----
.../interface/vchiq_arm/vchiq_core.h | 10 ++---
.../interface/vchiq_arm/vchiq_if.h | 8 ++--
7 files changed, 27 insertions(+), 86 deletions(-)
delete mode 100644 drivers/staging/vc04_services/interface/vchi/vchi_mh.h
diff --git a/drivers/staging/vc04_services/interface/vchi/vchi.h b/drivers/staging/vc04_services/interface/vchi/vchi.h
index 379a16ebfd5b..e326926eac31 100644
--- a/drivers/staging/vc04_services/interface/vchi/vchi.h
+++ b/drivers/staging/vc04_services/interface/vchi/vchi.h
@@ -36,7 +36,6 @@
#include "interface/vchi/vchi_cfg.h"
#include "interface/vchi/vchi_common.h"
-#include "vchi_mh.h"
/******************************************************************************
Global defs
@@ -239,7 +238,6 @@ extern int32_t vchi_bulk_queue_receive(VCHI_SERVICE_HANDLE_T handle,
// Prepare interface for a transfer from the other side into relocatable memory.
int32_t vchi_bulk_queue_receive_reloc(const VCHI_SERVICE_HANDLE_T handle,
- VCHI_MEM_HANDLE_T h_dst,
uint32_t offset,
uint32_t data_size,
const VCHI_FLAGS_T flags,
@@ -261,7 +259,6 @@ extern int32_t vchi_bulk_queue_transmit(VCHI_SERVICE_HANDLE_T handle,
#endif
extern int32_t vchi_bulk_queue_transmit_reloc(VCHI_SERVICE_HANDLE_T handle,
- VCHI_MEM_HANDLE_T h_src,
uint32_t offset,
uint32_t data_size,
VCHI_FLAGS_T flags,
diff --git a/drivers/staging/vc04_services/interface/vchi/vchi_mh.h b/drivers/staging/vc04_services/interface/vchi/vchi_mh.h
deleted file mode 100644
index 198bd076b666..000000000000
--- a/drivers/staging/vc04_services/interface/vchi/vchi_mh.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/**
- * Copyright (c) 2010-2012 Broadcom. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions, and the following disclaimer,
- * without modification.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The names of the above-listed copyright holders may not be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * ALTERNATIVELY, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2, as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
- * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef VCHI_MH_H_
-#define VCHI_MH_H_
-
-#include <linux/types.h>
-
-typedef int32_t VCHI_MEM_HANDLE_T;
-#define VCHI_MEM_HANDLE_INVALID 0
-
-#endif
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
index 83d740feab96..014583cdf367 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
@@ -247,13 +247,10 @@ remote_event_signal(REMOTE_EVENT_T *event)
}
VCHIQ_STATUS_T
-vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, VCHI_MEM_HANDLE_T memhandle,
- void *offset, int size, int dir)
+vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, void *offset, int size, int dir)
{
struct vchiq_pagelist_info *pagelistinfo;
- WARN_ON(memhandle != VCHI_MEM_HANDLE_INVALID);
-
pagelistinfo = create_pagelist((char __user *)offset, size,
(dir == VCHIQ_BULK_RECEIVE)
? PAGELIST_READ
@@ -262,7 +259,6 @@ vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, VCHI_MEM_HANDLE_T memhandle,
if (!pagelistinfo)
return VCHIQ_ERROR;
- bulk->handle = memhandle;
bulk->data = (void *)(unsigned long)pagelistinfo->dma_addr;
/*
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 5f55c708ade8..34160cc3b8bd 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -419,9 +419,9 @@ vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle, const void *data,
switch (mode) {
case VCHIQ_BULK_MODE_NOCALLBACK:
case VCHIQ_BULK_MODE_CALLBACK:
- status = vchiq_bulk_transfer(handle,
- VCHI_MEM_HANDLE_INVALID, (void *)data, size, userdata,
- mode, VCHIQ_BULK_TRANSMIT);
+ status = vchiq_bulk_transfer(handle, (void *)data, size,
+ userdata, mode,
+ VCHIQ_BULK_TRANSMIT);
break;
case VCHIQ_BULK_MODE_BLOCKING:
status = vchiq_blocking_bulk_transfer(handle,
@@ -444,9 +444,8 @@ vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data,
switch (mode) {
case VCHIQ_BULK_MODE_NOCALLBACK:
case VCHIQ_BULK_MODE_CALLBACK:
- status = vchiq_bulk_transfer(handle,
- VCHI_MEM_HANDLE_INVALID, data, size, userdata,
- mode, VCHIQ_BULK_RECEIVE);
+ status = vchiq_bulk_transfer(handle, data, size, userdata,
+ mode, VCHIQ_BULK_RECEIVE);
break;
case VCHIQ_BULK_MODE_BLOCKING:
status = vchiq_blocking_bulk_transfer(handle,
@@ -513,9 +512,8 @@ vchiq_blocking_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, void *data,
}
}
- status = vchiq_bulk_transfer(handle, VCHI_MEM_HANDLE_INVALID,
- data, size, &waiter->bulk_waiter, VCHIQ_BULK_MODE_BLOCKING,
- dir);
+ status = vchiq_bulk_transfer(handle, data, size, &waiter->bulk_waiter,
+ VCHIQ_BULK_MODE_BLOCKING, dir);
if ((status != VCHIQ_RETRY) || fatal_signal_pending(current) ||
!waiter->bulk_waiter.bulk) {
VCHIQ_BULK_T *bulk = waiter->bulk_waiter.bulk;
@@ -1149,14 +1147,13 @@ vchiq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
current->pid);
args.userdata = &waiter->bulk_waiter;
}
- status = vchiq_bulk_transfer
- (args.handle,
- VCHI_MEM_HANDLE_INVALID,
- args.data, args.size,
- args.userdata, args.mode,
- dir);
+
+ status = vchiq_bulk_transfer(args.handle, args.data, args.size,
+ args.userdata, args.mode, dir);
+
if (!waiter)
break;
+
if ((status != VCHIQ_RETRY) || fatal_signal_pending(current) ||
!waiter->bulk_waiter.bulk) {
if (waiter->bulk_waiter.bulk) {
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
index 89f1ccdc3b98..8c7bda2e7cb6 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
@@ -3313,10 +3313,10 @@ vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T handle)
* When called in blocking mode, the userdata field points to a bulk_waiter
* structure.
*/
-VCHIQ_STATUS_T
-vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
- VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
- VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir)
+VCHIQ_STATUS_T vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
+ void *offset, int size, void *userdata,
+ VCHIQ_BULK_MODE_T mode,
+ VCHIQ_BULK_DIR_T dir)
{
VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
VCHIQ_BULK_QUEUE_T *queue;
@@ -3328,10 +3328,8 @@ vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
VCHIQ_MSG_BULK_TX : VCHIQ_MSG_BULK_RX;
VCHIQ_STATUS_T status = VCHIQ_ERROR;
- if (!service ||
- (service->srvstate != VCHIQ_SRVSTATE_OPEN) ||
- ((memhandle == VCHI_MEM_HANDLE_INVALID) && (offset == NULL)) ||
- (vchiq_check_service(service) != VCHIQ_SUCCESS))
+ if (!service || service->srvstate != VCHIQ_SRVSTATE_OPEN ||
+ !offset || vchiq_check_service(service) != VCHIQ_SUCCESS)
goto error_exit;
switch (mode) {
@@ -3388,8 +3386,7 @@ vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
bulk->size = size;
bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED;
- if (vchiq_prepare_bulk_data(bulk, memhandle, offset, size, dir) !=
- VCHIQ_SUCCESS)
+ if (vchiq_prepare_bulk_data(bulk, offset, size, dir) != VCHIQ_SUCCESS)
goto unlock_error_exit;
wmb();
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h
index 10deb5745dda..daada568f400 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h
@@ -242,7 +242,6 @@ typedef struct vchiq_bulk_struct {
short mode;
short dir;
void *userdata;
- VCHI_MEM_HANDLE_T handle;
void *data;
int size;
void *remote_data;
@@ -566,9 +565,9 @@ extern void
remote_event_pollall(VCHIQ_STATE_T *state);
extern VCHIQ_STATUS_T
-vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
- VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
- VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir);
+vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, void *offset, int size,
+ void *userdata, VCHIQ_BULK_MODE_T mode,
+ VCHIQ_BULK_DIR_T dir);
extern void
vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state);
@@ -624,8 +623,7 @@ unlock_service(VCHIQ_SERVICE_T *service);
** implementations must be provided. */
extern VCHIQ_STATUS_T
-vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk,
- VCHI_MEM_HANDLE_T memhandle, void *offset, int size, int dir);
+vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, void *offset, int size, int dir);
extern void
vchiq_transfer_bulk(VCHIQ_BULK_T *bulk);
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
index 87829a244465..7b948a173e29 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
@@ -34,8 +34,6 @@
#ifndef VCHIQ_IF_H
#define VCHIQ_IF_H
-#include "interface/vchi/vchi_mh.h"
-
#define VCHIQ_SERVICE_HANDLE_INVALID 0
#define VCHIQ_SLOT_SIZE 4096
@@ -156,11 +154,11 @@ extern VCHIQ_STATUS_T vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T service,
void *data, unsigned int size, void *userdata,
VCHIQ_BULK_MODE_T mode);
extern VCHIQ_STATUS_T vchiq_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T service,
- VCHI_MEM_HANDLE_T handle, const void *offset, unsigned int size,
+ const void *offset, unsigned int size,
void *userdata, VCHIQ_BULK_MODE_T mode);
extern VCHIQ_STATUS_T vchiq_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T service,
- VCHI_MEM_HANDLE_T handle, void *offset, unsigned int size,
- void *userdata, VCHIQ_BULK_MODE_T mode);
+ void *offset, unsigned int size, void *userdata,
+ VCHIQ_BULK_MODE_T mode);
extern int vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T service);
extern void *vchiq_get_service_userdata(VCHIQ_SERVICE_HANDLE_T service);
extern int vchiq_get_service_fourcc(VCHIQ_SERVICE_HANDLE_T service);
--
2.19.1
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