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ALSA: asihpi - Increase request and response buffer sizes 

Allow for up to 256 bytes of extra data on top of standard hpi
request and response sizes.

Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Eliot Blennerhassett 2011-07-22 15:52:38 +12:00 committed by Takashi Iwai
parent 82b5774fe0
commit c6c2c9aba1
3 changed files with 34 additions and 19 deletions
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15
sound/pci/asihpi/hpi6205.c
View File

@ -2085,13 +2085,13 @@ static u16 message_response_sequence(struct hpi_adapter_obj *pao,
u16 err = 0;
message_count++;
if (phm->size > sizeof(interface->u)) {
if (phm->size > sizeof(interface->u.message_buffer)) {
phr->error = HPI_ERROR_MESSAGE_BUFFER_TOO_SMALL;
phr->specific_error = sizeof(interface->u);
phr->specific_error = sizeof(interface->u.message_buffer);
phr->size = sizeof(struct hpi_response_header);
HPI_DEBUG_LOG(ERROR,
"message len %d too big for buffer %zd \n", phm->size,
sizeof(interface->u));
sizeof(interface->u.message_buffer));
return 0;
}
@ -2123,18 +2123,19 @@ static u16 message_response_sequence(struct hpi_adapter_obj *pao,
/* read the result */
if (time_out) {
if (interface->u.response_buffer.size <= phr->size)
if (interface->u.response_buffer.response.size <= phr->size)
memcpy(phr, &interface->u.response_buffer,
interface->u.response_buffer.size);
interface->u.response_buffer.response.size);
else {
HPI_DEBUG_LOG(ERROR,
"response len %d too big for buffer %d\n",
interface->u.response_buffer.size, phr->size);
interface->u.response_buffer.response.size,
phr->size);
memcpy(phr, &interface->u.response_buffer,
sizeof(struct hpi_response_header));
phr->error = HPI_ERROR_RESPONSE_BUFFER_TOO_SMALL;
phr->specific_error =
interface->u.response_buffer.size;
interface->u.response_buffer.response.size;
phr->size = sizeof(struct hpi_response_header);
}
}

25
sound/pci/asihpi/hpi6205.h
View File

@ -1,7 +1,7 @@
/*****************************************************************************
AudioScience HPI driver
Copyright (C) 1997-2010 AudioScience Inc. <support@audioscience.com>
Copyright (C) 1997-2011 AudioScience Inc. <support@audioscience.com>
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as
@ -70,15 +70,28 @@ The Host located memory buffer that the 6205 will bus master
in and out of.
************************************************************/
#define HPI6205_SIZEOF_DATA (16*1024)
struct message_buffer_6205 {
struct hpi_message message;
char data[256];
};
struct response_buffer_6205 {
struct hpi_response response;
char data[256];
};
union buffer_6205 {
struct message_buffer_6205 message_buffer;
struct response_buffer_6205 response_buffer;
u8 b_data[HPI6205_SIZEOF_DATA];
};
struct bus_master_interface {
u32 host_cmd;
u32 dsp_ack;
u32 transfer_size_in_bytes;
union {
struct hpi_message_header message_buffer;
struct hpi_response_header response_buffer;
u8 b_data[HPI6205_SIZEOF_DATA];
} u;
union buffer_6205 u;
struct controlcache_6205 control_cache;
struct async_event_buffer_6205 async_buffer;
struct hpi_hostbuffer_status

13
sound/pci/asihpi/hpicmn.c
View File

@ -315,8 +315,7 @@ short hpi_check_control_cache(struct hpi_control_cache *p_cache,
short found = 1;
struct hpi_control_cache_info *pI;
struct hpi_control_cache_single *pC;
struct hpi_control_cache_pad *p_pad;
u16 response_size;
if (!find_control(phm->obj_index, p_cache, &pI)) {
HPI_DEBUG_LOG(VERBOSE,
"HPICMN find_control() failed for adap %d\n",
@ -326,11 +325,15 @@ short hpi_check_control_cache(struct hpi_control_cache *p_cache,
phr->error = 0;
/* set the default response size */
response_size =
sizeof(struct hpi_response_header) +
sizeof(struct hpi_control_res);
/* pC is the default cached control strucure. May be cast to
something else in the following switch statement.
*/
pC = (struct hpi_control_cache_single *)pI;
p_pad = (struct hpi_control_cache_pad *)pI;
switch (pI->control_type) {
@ -529,9 +532,7 @@ short hpi_check_control_cache(struct hpi_control_cache *p_cache,
pI->control_index, pI->control_type, phm->u.c.attribute);
if (found)
phr->size =
sizeof(struct hpi_response_header) +
sizeof(struct hpi_control_res);
phr->size = response_size;
return found;
}