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gerrit.nordix.org / codeaurora / quic / qsdk / wifi / qca-wifi-oss / 5d1c9ed6767e9448cb08410e39ecd4ee4ef57b10 / . / wmi_tlv_helper.c
blob: f01cbd2d55acd3131bf982e6d277d58363a9a569 [file] [log] [blame]
/*
* Copyright (c) 2013-2018 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "wmi_tlv_platform.c"
#include "wmi_tlv_defs.h"
#include "wmi_version.h"
#include "qdf_module.h"
#define WMITLV_GET_ATTRIB_NUM_TLVS 0xFFFFFFFF
#define WMITLV_GET_CMDID(val) (val & 0x00FFFFFF)
#define WMITLV_GET_NUM_TLVS(val) ((val >> 24) & 0xFF)
#define WMITLV_GET_TAGID(val) (val & 0x00000FFF)
#define WMITLV_GET_TAG_STRUCT_SIZE(val) ((val >> 12) & 0x000001FF)
#define WMITLV_GET_TAG_ARRAY_SIZE(val) ((val >> 21) & 0x000001FF)
#define WMITLV_GET_TAG_VARIED(val) ((val >> 30) & 0x00000001)
#define WMITLV_SET_ATTRB0(id) ((WMITLV_GET_TAG_NUM_TLV_ATTRIB(id) << 24) | \
(id & 0x00FFFFFF))
#define WMITLV_SET_ATTRB1(tagID, tagStructSize, tagArraySize, tagVaried) \
(((tagVaried&0x1)<<30) | ((tagArraySize&0x1FF)<<21) | \
((tagStructSize&0x1FF)<<12) | (tagID&0xFFF))
#define WMITLV_OP_SET_TLV_ATTRIB_macro(param_ptr, param_len, wmi_cmd_event_id, \
elem_tlv_tag, elem_struc_type, elem_name, var_len, arr_size) \
WMITLV_SET_ATTRB1(elem_tlv_tag, sizeof(elem_struc_type), arr_size, var_len),
#define WMITLV_GET_CMD_EVT_ATTRB_LIST(id) \
WMITLV_SET_ATTRB0(id), \
WMITLV_TABLE(id,SET_TLV_ATTRIB, NULL, 0)
uint32_t cmd_attr_list[] = {
WMITLV_ALL_CMD_LIST(WMITLV_GET_CMD_EVT_ATTRB_LIST)
};
uint32_t evt_attr_list[] = {
WMITLV_ALL_EVT_LIST(WMITLV_GET_CMD_EVT_ATTRB_LIST)
};
#ifdef NO_DYNAMIC_MEM_ALLOC
static wmitlv_cmd_param_info *g_wmi_static_cmd_param_info_buf;
uint32_t g_wmi_static_max_cmd_param_tlvs;
#endif
/**
* wmitlv_set_static_param_tlv_buf() - tlv helper function
* @param_tlv_buf: tlv buffer parameter
* @max_tlvs_accommodated: max no of tlv entries
*
*
* WMI TLV Helper function to set the static cmd_param_tlv structure
* and number of TLVs that can be accommodated in the structure.
* This function should be used when dynamic memory allocation is not
* supported. When dynamic memory allocation is not supported by any
* component then NO_DYNAMIC_MEMALLOC macro has to be defined in respective
* tlv_platform.c file. And respective component has to allocate
* cmd_param_tlv structure buffer to accommodate whatever number of TLV's.
* Both the buffer address and number of TLV's that can be accommodated in
* the buffer should be sent as arguments to this function.
*
* Return None
*/
void
wmitlv_set_static_param_tlv_buf(void *param_tlv_buf,
uint32_t max_tlvs_accommodated)
{
#ifdef NO_DYNAMIC_MEM_ALLOC
g_wmi_static_cmd_param_info_buf = param_tlv_buf;
g_wmi_static_max_cmd_param_tlvs = max_tlvs_accommodated;
#endif
}
/**
* wmitlv_get_attributes() - tlv helper function
* @is_cmd_id: boolean for command attribute
* @cmd_event_id: command event id
* @curr_tlv_order: tlv order
* @tlv_attr_ptr: pointer to tlv attribute
*
*
* WMI TLV Helper functions to find the attributes of the
* Command/Event TLVs.
*
* Return: 0 if success. Return >=1 if failure.
*/
static
uint32_t wmitlv_get_attributes(uint32_t is_cmd_id, uint32_t cmd_event_id,
uint32_t curr_tlv_order,
wmitlv_attributes_struc *tlv_attr_ptr)
{
uint32_t i, base_index, num_tlvs, num_entries;
uint32_t *pAttrArrayList;
if (is_cmd_id) {
pAttrArrayList = &cmd_attr_list[0];
num_entries = QDF_ARRAY_SIZE(cmd_attr_list);
} else {
pAttrArrayList = &evt_attr_list[0];
num_entries = QDF_ARRAY_SIZE(evt_attr_list);
}
for (i = 0; i < num_entries; i++) {
num_tlvs = WMITLV_GET_NUM_TLVS(pAttrArrayList[i]);
if (WMITLV_GET_CMDID(cmd_event_id) ==
WMITLV_GET_CMDID(pAttrArrayList[i])) {
tlv_attr_ptr->cmd_num_tlv = num_tlvs;
/* Return success from here when only number of TLVS for
* this command/event is required */
if (curr_tlv_order == WMITLV_GET_ATTRIB_NUM_TLVS) {
wmi_tlv_print_verbose
("%s: WMI TLV attribute definitions for %s:0x%x found; num_of_tlvs:%d\n",
__func__, (is_cmd_id ? "Cmd" : "Evt"),
cmd_event_id, num_tlvs);
return 0;
}
/* Return failure if tlv_order is more than the expected
* number of TLVs */
if (curr_tlv_order >= num_tlvs) {
wmi_tlv_print_error
("%s: ERROR: TLV order %d greater than num_of_tlvs:%d for %s:0x%x\n",
__func__, curr_tlv_order, num_tlvs,
(is_cmd_id ? "Cmd" : "Evt"), cmd_event_id);
return 1;
}
base_index = i + 1; /* index to first TLV attributes */
wmi_tlv_print_verbose
("%s: WMI TLV attributes for %s:0x%x tlv[%d]:0x%x\n",
__func__, (is_cmd_id ? "Cmd" : "Evt"),
cmd_event_id, curr_tlv_order,
pAttrArrayList[(base_index + curr_tlv_order)]);
tlv_attr_ptr->tag_order = curr_tlv_order;
tlv_attr_ptr->tag_id =
WMITLV_GET_TAGID(pAttrArrayList
[(base_index + curr_tlv_order)]);
tlv_attr_ptr->tag_struct_size =
WMITLV_GET_TAG_STRUCT_SIZE(pAttrArrayList
[(base_index +
curr_tlv_order)]);
tlv_attr_ptr->tag_varied_size =
WMITLV_GET_TAG_VARIED(pAttrArrayList
[(base_index +
curr_tlv_order)]);
tlv_attr_ptr->tag_array_size =
WMITLV_GET_TAG_ARRAY_SIZE(pAttrArrayList
[(base_index +
curr_tlv_order)]);
return 0;
}
i += num_tlvs;
}
wmi_tlv_print_error
("%s: ERROR: Didn't found WMI TLV attribute definitions for %s:0x%x\n",
__func__, (is_cmd_id ? "Cmd" : "Evt"), cmd_event_id);
return 1;
}
/**
* wmitlv_check_tlv_params() - tlv helper function
* @os_handle: os context handle
* @param_struc_ptr: pointer to tlv structure
* @is_cmd_id: boolean for command attribute
* @wmi_cmd_event_id: command event id
*
*
* Helper Function to vaidate the prepared TLV's for
* an WMI event/command to be sent.
*
* Return: 0 if success. Return < 0 if failure.
*/
static int
wmitlv_check_tlv_params(void *os_handle, void *param_struc_ptr,
uint32_t param_buf_len, uint32_t is_cmd_id,
uint32_t wmi_cmd_event_id)
{
wmitlv_attributes_struc attr_struct_ptr;
uint32_t buf_idx = 0;
uint32_t tlv_index = 0;
uint8_t *buf_ptr = (unsigned char *)param_struc_ptr;
uint32_t expected_num_tlvs, expected_tlv_len;
int32_t error = -1;
/* Get the number of TLVs for this command/event */
if (wmitlv_get_attributes
(is_cmd_id, wmi_cmd_event_id, WMITLV_GET_ATTRIB_NUM_TLVS,
&attr_struct_ptr) != 0) {
wmi_tlv_print_error
("%s: ERROR: Couldn't get expected number of TLVs for Cmd=%d\n",
__func__, wmi_cmd_event_id);
goto Error_wmitlv_check_tlv_params;
}
/* NOTE: the returned number of TLVs is in "attr_struct_ptr.cmd_num_tlv" */
expected_num_tlvs = attr_struct_ptr.cmd_num_tlv;
while ((buf_idx + WMI_TLV_HDR_SIZE) <= param_buf_len) {
uint32_t curr_tlv_tag =
WMITLV_GET_TLVTAG(WMITLV_GET_HDR(buf_ptr));
uint32_t curr_tlv_len =
WMITLV_GET_TLVLEN(WMITLV_GET_HDR(buf_ptr));
if ((buf_idx + WMI_TLV_HDR_SIZE + curr_tlv_len) > param_buf_len) {
wmi_tlv_print_error
("%s: ERROR: Invalid TLV length for Cmd=%d Tag_order=%d buf_idx=%d Tag:%d Len:%d TotalLen:%d\n",
__func__, wmi_cmd_event_id, tlv_index, buf_idx,
curr_tlv_tag, curr_tlv_len, param_buf_len);
goto Error_wmitlv_check_tlv_params;
}
/* Get the attributes of the TLV with the given order in "tlv_index" */
wmi_tlv_OS_MEMZERO(&attr_struct_ptr,
sizeof(wmitlv_attributes_struc));
if (wmitlv_get_attributes
(is_cmd_id, wmi_cmd_event_id, tlv_index,
&attr_struct_ptr) != 0) {
wmi_tlv_print_error
("%s: ERROR: No TLV attributes found for Cmd=%d Tag_order=%d\n",
__func__, wmi_cmd_event_id, tlv_index);
goto Error_wmitlv_check_tlv_params;
}
/* Found the TLV that we wanted */
wmi_tlv_print_verbose("%s: [tlv %d]: tag=%d, len=%d\n",
__func__, tlv_index, curr_tlv_tag,
curr_tlv_len);
/* Validating Tag ID order */
if (curr_tlv_tag != attr_struct_ptr.tag_id) {
wmi_tlv_print_error
("%s: ERROR: TLV has wrong tag in order for Cmd=0x%x. Given=%d, Expected=%d.\n",
__func__, wmi_cmd_event_id, curr_tlv_tag,
attr_struct_ptr.tag_id);
goto Error_wmitlv_check_tlv_params;
}
/* Validate Tag length */
/* Array TLVs length checking needs special handling */
if ((curr_tlv_tag >= WMITLV_TAG_FIRST_ARRAY_ENUM)
&& (curr_tlv_tag <= WMITLV_TAG_LAST_ARRAY_ENUM)) {
if (attr_struct_ptr.tag_varied_size == WMITLV_SIZE_FIX) {
/* Array size can't be invalid for fixed size Array TLV */
if (WMITLV_ARR_SIZE_INVALID ==
attr_struct_ptr.tag_array_size) {
wmi_tlv_print_error
("%s: ERROR: array_size can't be invalid for Array TLV Cmd=0x%x Tag=%d\n",
__func__, wmi_cmd_event_id,
curr_tlv_tag);
goto Error_wmitlv_check_tlv_params;
}
expected_tlv_len =
attr_struct_ptr.tag_array_size *
attr_struct_ptr.tag_struct_size;
/* Paddding is only required for Byte array Tlvs all other
* array tlv's should be aligned to 4 bytes during their
* definition */
if (WMITLV_TAG_ARRAY_BYTE ==
attr_struct_ptr.tag_id) {
expected_tlv_len =
roundup(expected_tlv_len,
sizeof(uint32_t));
}
if (curr_tlv_len != expected_tlv_len) {
wmi_tlv_print_error
("%s: ERROR: TLV has wrong length for Cmd=0x%x. Tag_order=%d Tag=%d, Given_Len:%d Expected_Len=%d.\n",
__func__, wmi_cmd_event_id,
tlv_index, curr_tlv_tag,
curr_tlv_len, expected_tlv_len);
goto Error_wmitlv_check_tlv_params;
}
} else {
/* Array size should be invalid for variable size Array TLV */
if (WMITLV_ARR_SIZE_INVALID !=
attr_struct_ptr.tag_array_size) {
wmi_tlv_print_error
("%s: ERROR: array_size should be invalid for Array TLV Cmd=0x%x Tag=%d\n",
__func__, wmi_cmd_event_id,
curr_tlv_tag);
goto Error_wmitlv_check_tlv_params;
}
/* Incase of variable length TLV's, there is no expectation
* on the length field so do whatever checking you can
* depending on the TLV tag if TLV length is non-zero */
if (curr_tlv_len != 0) {
/* Verify TLV length is aligned to the size of structure */
if ((curr_tlv_len %
attr_struct_ptr.tag_struct_size) !=
0) {
wmi_tlv_print_error
("%s: ERROR: TLV length %d for Cmd=0x%x is not aligned to size of structure(%d bytes)\n",
__func__, curr_tlv_len,
wmi_cmd_event_id,
attr_struct_ptr.
tag_struct_size);
goto Error_wmitlv_check_tlv_params;
}
if (curr_tlv_tag ==
WMITLV_TAG_ARRAY_STRUC) {
uint8_t *tlv_buf_ptr = NULL;
uint32_t in_tlv_len;
uint32_t idx;
uint32_t num_of_elems;
/* Verify length of inner TLVs */
num_of_elems =
curr_tlv_len /
attr_struct_ptr.
tag_struct_size;
/* Set tlv_buf_ptr to the first inner TLV address */
tlv_buf_ptr =
buf_ptr + WMI_TLV_HDR_SIZE;
for (idx = 0;
idx < num_of_elems;
idx++) {
in_tlv_len =
WMITLV_GET_TLVLEN
(WMITLV_GET_HDR
(tlv_buf_ptr));
if ((in_tlv_len +
WMI_TLV_HDR_SIZE)
!=
attr_struct_ptr.
tag_struct_size) {
wmi_tlv_print_error
("%s: ERROR: TLV has wrong length for Cmd=0x%x. Tag_order=%d Tag=%d, Given_Len:%zu Expected_Len=%d.\n",
__func__,
wmi_cmd_event_id,
tlv_index,
curr_tlv_tag,
(in_tlv_len
+
WMI_TLV_HDR_SIZE),
attr_struct_ptr.
tag_struct_size);
goto Error_wmitlv_check_tlv_params;
}
tlv_buf_ptr +=
in_tlv_len +
WMI_TLV_HDR_SIZE;
}
} else
if ((curr_tlv_tag ==
WMITLV_TAG_ARRAY_UINT32)
|| (curr_tlv_tag ==
WMITLV_TAG_ARRAY_BYTE)
|| (curr_tlv_tag ==
WMITLV_TAG_ARRAY_FIXED_STRUC)) {
/* Nothing to verify here */
} else {
wmi_tlv_print_error
("%s ERROR Need to handle the Array tlv %d for variable length for Cmd=0x%x\n",
__func__,
attr_struct_ptr.tag_id,
wmi_cmd_event_id);
goto Error_wmitlv_check_tlv_params;
}
}
}
} else {
/* Non-array TLV. */
if ((curr_tlv_len + WMI_TLV_HDR_SIZE) !=
attr_struct_ptr.tag_struct_size) {
wmi_tlv_print_error
("%s: ERROR: TLV has wrong length for Cmd=0x%x. Given=%zu, Expected=%d.\n",
__func__, wmi_cmd_event_id,
(curr_tlv_len + WMI_TLV_HDR_SIZE),
attr_struct_ptr.tag_struct_size);
goto Error_wmitlv_check_tlv_params;
}
}
/* Check TLV length is aligned to 4 bytes or not */
if ((curr_tlv_len % sizeof(uint32_t)) != 0) {
wmi_tlv_print_error
("%s: ERROR: TLV length %d for Cmd=0x%x is not aligned to %zu bytes\n",
__func__, curr_tlv_len, wmi_cmd_event_id,
sizeof(uint32_t));
goto Error_wmitlv_check_tlv_params;
}
tlv_index++;
buf_ptr += curr_tlv_len + WMI_TLV_HDR_SIZE;
buf_idx += curr_tlv_len + WMI_TLV_HDR_SIZE;
}
if (tlv_index != expected_num_tlvs) {
wmi_tlv_print_verbose
("%s: INFO: Less number of TLVs filled for Cmd=0x%x Filled %d Expected=%d\n",
__func__, wmi_cmd_event_id, tlv_index, expected_num_tlvs);
}
return 0;
Error_wmitlv_check_tlv_params:
return error;
}
/**
* wmitlv_check_event_tlv_params() - tlv helper function
* @os_handle: os context handle
* @param_struc_ptr: pointer to tlv structure
* @is_cmd_id: boolean for command attribute
* @wmi_cmd_event_id: command event id
*
*
* Helper Function to vaidate the prepared TLV's for
* an WMI event/command to be sent.
*
* Return: 0 if success. Return < 0 if failure.
*/
int
wmitlv_check_event_tlv_params(void *os_handle, void *param_struc_ptr,
uint32_t param_buf_len, uint32_t wmi_cmd_event_id)
{
uint32_t is_cmd_id = 0;
return wmitlv_check_tlv_params
(os_handle, param_struc_ptr, param_buf_len, is_cmd_id,
wmi_cmd_event_id);
}
/**
* wmitlv_check_command_tlv_params() - tlv helper function
* @os_handle: os context handle
* @param_struc_ptr: pointer to tlv structure
* @is_cmd_id: boolean for command attribute
* @wmi_cmd_event_id: command event id
*
*
* Helper Function to vaidate the prepared TLV's for
* an WMI event/command to be sent.
*
* Return: 0 if success. Return < 0 if failure.
*/
int
wmitlv_check_command_tlv_params(void *os_handle, void *param_struc_ptr,
uint32_t param_buf_len,
uint32_t wmi_cmd_event_id)
{
uint32_t is_cmd_id = 1;
return wmitlv_check_tlv_params
(os_handle, param_struc_ptr, param_buf_len, is_cmd_id,
wmi_cmd_event_id);
}
qdf_export_symbol(wmitlv_check_command_tlv_params);
/**
* wmitlv_check_and_pad_tlvs() - tlv helper function
* @os_handle: os context handle
* @param_buf_len: length of tlv parameter
* @param_struc_ptr: pointer to tlv structure
* @is_cmd_id: boolean for command attribute
* @wmi_cmd_event_id: command event id
* @wmi_cmd_struct_ptr: wmi command structure
*
*
* vaidate the TLV's coming for an event/command and
* also pads data to TLV's if necessary
*
* Return: 0 if success. Return < 0 if failure.
*/
static int
wmitlv_check_and_pad_tlvs(void *os_handle, void *param_struc_ptr,
uint32_t param_buf_len, uint32_t is_cmd_id,
uint32_t wmi_cmd_event_id, void **wmi_cmd_struct_ptr)
{
wmitlv_attributes_struc attr_struct_ptr;
uint32_t buf_idx = 0;
uint32_t tlv_index = 0;
uint32_t num_of_elems = 0;
int tlv_size_diff = 0;
uint8_t *buf_ptr = (unsigned char *)param_struc_ptr;
wmitlv_cmd_param_info *cmd_param_tlvs_ptr = NULL;
uint32_t remaining_expected_tlvs = 0xFFFFFFFF;
uint32_t len_wmi_cmd_struct_buf;
uint32_t free_buf_len;
int32_t error = -1;
/* Get the number of TLVs for this command/event */
if (wmitlv_get_attributes
(is_cmd_id, wmi_cmd_event_id, WMITLV_GET_ATTRIB_NUM_TLVS,
&attr_struct_ptr) != 0) {
wmi_tlv_print_error
("%s: ERROR: Couldn't get expected number of TLVs for Cmd=%d\n",
__func__, wmi_cmd_event_id);
return error;
}
/* NOTE: the returned number of TLVs is in "attr_struct_ptr.cmd_num_tlv" */
if (param_buf_len < WMI_TLV_HDR_SIZE) {
wmi_tlv_print_error
("%s: ERROR: Incorrect param buf length passed\n",
__func__);
return error;
}
/* Create base structure of format wmi_cmd_event_id##_param_tlvs */
len_wmi_cmd_struct_buf =
attr_struct_ptr.cmd_num_tlv * sizeof(wmitlv_cmd_param_info);
#ifndef NO_DYNAMIC_MEM_ALLOC
/* Dynamic memory allocation supported */
wmi_tlv_os_mem_alloc(os_handle, *wmi_cmd_struct_ptr,
len_wmi_cmd_struct_buf);
#else
/* Dynamic memory allocation is not supported. Use the buffer
* g_wmi_static_cmd_param_info_buf, which should be set using
* wmi_tlv_set_static_param_tlv_buf(),
* for base structure of format wmi_cmd_event_id##_param_tlvs */
*wmi_cmd_struct_ptr = g_wmi_static_cmd_param_info_buf;
if (attr_struct_ptr.cmd_num_tlv > g_wmi_static_max_cmd_param_tlvs) {
/* Error: Expecting more TLVs that accommodated for static structure */
wmi_tlv_print_error
("%s: Error: Expecting more TLVs that accommodated for static structure. Expected:%d Accomodated:%d\n",
__func__, attr_struct_ptr.cmd_num_tlv,
g_wmi_static_max_cmd_param_tlvs);
return error;
}
#endif
if (*wmi_cmd_struct_ptr == NULL) {
/* Error: unable to alloc memory */
wmi_tlv_print_error
("%s: Error: unable to alloc memory (size=%d) for TLV\n",
__func__, len_wmi_cmd_struct_buf);
return error;
}
cmd_param_tlvs_ptr = (wmitlv_cmd_param_info *) *wmi_cmd_struct_ptr;
wmi_tlv_OS_MEMZERO(cmd_param_tlvs_ptr, len_wmi_cmd_struct_buf);
remaining_expected_tlvs = attr_struct_ptr.cmd_num_tlv;
while (((buf_idx + WMI_TLV_HDR_SIZE) <= param_buf_len)
&& (remaining_expected_tlvs)) {
uint32_t curr_tlv_tag =
WMITLV_GET_TLVTAG(WMITLV_GET_HDR(buf_ptr));
uint32_t curr_tlv_len =
WMITLV_GET_TLVLEN(WMITLV_GET_HDR(buf_ptr));
int num_padding_bytes = 0;
free_buf_len = param_buf_len - (buf_idx + WMI_TLV_HDR_SIZE);
if (curr_tlv_len > free_buf_len) {
wmi_tlv_print_error("%s: TLV length overflow",
__func__);
goto Error_wmitlv_check_and_pad_tlvs;
}
/* Get the attributes of the TLV with the given order in "tlv_index" */
wmi_tlv_OS_MEMZERO(&attr_struct_ptr,
sizeof(wmitlv_attributes_struc));
if (wmitlv_get_attributes
(is_cmd_id, wmi_cmd_event_id, tlv_index,
&attr_struct_ptr) != 0) {
wmi_tlv_print_error
("%s: ERROR: No TLV attributes found for Cmd=%d Tag_order=%d\n",
__func__, wmi_cmd_event_id, tlv_index);
goto Error_wmitlv_check_and_pad_tlvs;
}
/* Found the TLV that we wanted */
wmi_tlv_print_verbose("%s: [tlv %d]: tag=%d, len=%d\n",
__func__, tlv_index, curr_tlv_tag,
curr_tlv_len);
/* Validating Tag order */
if (curr_tlv_tag != attr_struct_ptr.tag_id) {
wmi_tlv_print_error
("%s: ERROR: TLV has wrong tag in order for Cmd=0x%x. Given=%d, Expected=%d.\n",
__func__, wmi_cmd_event_id, curr_tlv_tag,
attr_struct_ptr.tag_id);
goto Error_wmitlv_check_and_pad_tlvs;
}
if ((curr_tlv_tag >= WMITLV_TAG_FIRST_ARRAY_ENUM)
&& (curr_tlv_tag <= WMITLV_TAG_LAST_ARRAY_ENUM)) {
/* Current Tag is an array of some kind. */
/* Skip the TLV header of this array */
buf_ptr += WMI_TLV_HDR_SIZE;
buf_idx += WMI_TLV_HDR_SIZE;
} else {
/* Non-array TLV. */
curr_tlv_len += WMI_TLV_HDR_SIZE;
}
if (attr_struct_ptr.tag_varied_size == WMITLV_SIZE_FIX) {
/* This TLV is fixed length */
if (WMITLV_ARR_SIZE_INVALID ==
attr_struct_ptr.tag_array_size) {
tlv_size_diff =
curr_tlv_len -
attr_struct_ptr.tag_struct_size;
num_of_elems =
(curr_tlv_len > WMI_TLV_HDR_SIZE) ? 1 : 0;
} else {
tlv_size_diff =
curr_tlv_len -
(attr_struct_ptr.tag_struct_size *
attr_struct_ptr.tag_array_size);
num_of_elems = attr_struct_ptr.tag_array_size;
}
} else {
/* This TLV has a variable number of elements */
if (WMITLV_TAG_ARRAY_STRUC == attr_struct_ptr.tag_id) {
uint32_t in_tlv_len = 0;
if (curr_tlv_len != 0) {
in_tlv_len =
WMITLV_GET_TLVLEN(WMITLV_GET_HDR
(buf_ptr));
in_tlv_len += WMI_TLV_HDR_SIZE;
if (in_tlv_len > curr_tlv_len) {
wmi_tlv_print_error("%s: Invalid in_tlv_len=%d",
__func__,
in_tlv_len);
goto
Error_wmitlv_check_and_pad_tlvs;
}
tlv_size_diff =
in_tlv_len -
attr_struct_ptr.tag_struct_size;
num_of_elems =
curr_tlv_len / in_tlv_len;
wmi_tlv_print_verbose
("%s: WARN: TLV array of structures in_tlv_len=%d struct_size:%d diff:%d num_of_elems=%d \n",
__func__, in_tlv_len,
attr_struct_ptr.tag_struct_size,
tlv_size_diff, num_of_elems);
} else {
tlv_size_diff = 0;
num_of_elems = 0;
}
} else
if ((WMITLV_TAG_ARRAY_UINT32 ==
attr_struct_ptr.tag_id)
|| (WMITLV_TAG_ARRAY_BYTE ==
attr_struct_ptr.tag_id)
|| (WMITLV_TAG_ARRAY_FIXED_STRUC ==
attr_struct_ptr.tag_id)) {
tlv_size_diff = 0;
num_of_elems =
curr_tlv_len /
attr_struct_ptr.tag_struct_size;
} else {
wmi_tlv_print_error
("%s ERROR Need to handle this tag ID for variable length %d\n",
__func__, attr_struct_ptr.tag_id);
goto Error_wmitlv_check_and_pad_tlvs;
}
}
if ((WMITLV_TAG_ARRAY_STRUC == attr_struct_ptr.tag_id) &&
(tlv_size_diff != 0)) {
void *new_tlv_buf = NULL;
uint8_t *tlv_buf_ptr = NULL;
uint32_t in_tlv_len;
uint32_t i;
if (attr_struct_ptr.tag_varied_size == WMITLV_SIZE_FIX) {
/* This is not allowed. The tag WMITLV_TAG_ARRAY_STRUC can
* only be used with variable-length structure array
* should not have a fixed number of elements (contradicting).
* Use WMITLV_TAG_ARRAY_FIXED_STRUC tag for fixed size
* structure array(where structure never change without
* breaking compatibility) */
wmi_tlv_print_error
("%s: ERROR: TLV (tag=%d) should be variable-length and not fixed length\n",
__func__, curr_tlv_tag);
goto Error_wmitlv_check_and_pad_tlvs;
}
/* Warning: Needs to allocate a larger structure and pad with zeros */
wmi_tlv_print_verbose
("%s: WARN: TLV array of structures needs padding. tlv_size_diff=%d\n",
__func__, tlv_size_diff);
/* incoming structure length */
in_tlv_len =
WMITLV_GET_TLVLEN(WMITLV_GET_HDR(buf_ptr)) +
WMI_TLV_HDR_SIZE;
#ifndef NO_DYNAMIC_MEM_ALLOC
wmi_tlv_os_mem_alloc(os_handle, new_tlv_buf,
(num_of_elems *
attr_struct_ptr.tag_struct_size));
if (new_tlv_buf == NULL) {
/* Error: unable to alloc memory */
wmi_tlv_print_error
("%s: Error: unable to alloc memory (size=%d) for padding the TLV array %d\n",
__func__,
(num_of_elems *
attr_struct_ptr.tag_struct_size),
curr_tlv_tag);
goto Error_wmitlv_check_and_pad_tlvs;
}
wmi_tlv_OS_MEMZERO(new_tlv_buf,
(num_of_elems *
attr_struct_ptr.tag_struct_size));
tlv_buf_ptr = (uint8_t *) new_tlv_buf;
for (i = 0; i < num_of_elems; i++) {
if (tlv_size_diff > 0) {
/* Incoming structure size is greater than expected
* structure size. so copy the number of bytes equal
* to expected structure size */
wmi_tlv_OS_MEMCPY(tlv_buf_ptr,
(void *)(buf_ptr +
i *
in_tlv_len),
attr_struct_ptr.
tag_struct_size);
} else {
/* Incoming structure size is smaller than expected
* structure size. so copy the number of bytes equal
* to incoming structure size */
wmi_tlv_OS_MEMCPY(tlv_buf_ptr,
(void *)(buf_ptr +
i *
in_tlv_len),
in_tlv_len);
}
tlv_buf_ptr += attr_struct_ptr.tag_struct_size;
}
#else
{
uint8_t *src_addr;
uint8_t *dst_addr;
uint32_t buf_mov_len;
if (tlv_size_diff < 0) {
/* Incoming structure size is smaller than expected size
* then this needs padding for each element in the array */
/* Find amount of bytes to be padded for one element */
num_padding_bytes = tlv_size_diff * -1;
/* Move subsequent TLVs by number of bytes to be padded
* for all elements */
if ((free_buf_len <
attr_struct_ptr.tag_struct_size *
num_of_elems) ||
(param_buf_len <
buf_idx + curr_tlv_len +
num_padding_bytes * num_of_elems)) {
wmi_tlv_print_error("%s: Insufficent buffer\n",
__func__);
goto
Error_wmitlv_check_and_pad_tlvs;
} else {
src_addr =
buf_ptr + curr_tlv_len;
dst_addr =
buf_ptr + curr_tlv_len +
(num_padding_bytes *
num_of_elems);
buf_mov_len =
param_buf_len - (buf_idx +
curr_tlv_len);
wmi_tlv_OS_MEMMOVE(dst_addr,
src_addr,
buf_mov_len);
}
/* Move subsequent elements of array down by number of
* bytes to be padded for one element and alse set
* padding bytes to zero */
tlv_buf_ptr = buf_ptr;
for (i = 0; i < num_of_elems - 1; i++) {
src_addr =
tlv_buf_ptr + in_tlv_len;
if (i != (num_of_elems - 1)) {
dst_addr =
tlv_buf_ptr +
in_tlv_len +
num_padding_bytes;
buf_mov_len =
curr_tlv_len -
((i +
1) * in_tlv_len);
wmi_tlv_OS_MEMMOVE
(dst_addr, src_addr,
buf_mov_len);
}
/* Set the padding bytes to zeroes */
wmi_tlv_OS_MEMZERO(src_addr,
num_padding_bytes);
tlv_buf_ptr +=
attr_struct_ptr.
tag_struct_size;
}
src_addr = tlv_buf_ptr + in_tlv_len;
wmi_tlv_OS_MEMZERO(src_addr,
num_padding_bytes);
/* Update the number of padding bytes to total number
* of bytes padded for all elements in the array */
num_padding_bytes =
num_padding_bytes * num_of_elems;
new_tlv_buf = buf_ptr;
} else {
/* Incoming structure size is greater than expected size
* then this needs shrinking for each element in the array */
/* Find amount of bytes to be shrunk for one element */
num_padding_bytes = tlv_size_diff * -1;
/* Move subsequent elements of array up by number of bytes
* to be shrunk for one element */
tlv_buf_ptr = buf_ptr;
for (i = 0; i < (num_of_elems - 1); i++) {
src_addr =
tlv_buf_ptr + in_tlv_len;
dst_addr =
tlv_buf_ptr + in_tlv_len +
num_padding_bytes;
buf_mov_len =
curr_tlv_len -
((i + 1) * in_tlv_len);
wmi_tlv_OS_MEMMOVE(dst_addr,
src_addr,
buf_mov_len);
tlv_buf_ptr +=
attr_struct_ptr.
tag_struct_size;
}
/* Move subsequent TLVs by number of bytes to be shrunk
* for all elements */
if (param_buf_len >
(buf_idx + curr_tlv_len)) {
src_addr =
buf_ptr + curr_tlv_len;
dst_addr =
buf_ptr + curr_tlv_len +
(num_padding_bytes *
num_of_elems);
buf_mov_len =
param_buf_len - (buf_idx +
curr_tlv_len);
wmi_tlv_OS_MEMMOVE(dst_addr,
src_addr,
buf_mov_len);
}
/* Update the number of padding bytes to total number of
* bytes shrunk for all elements in the array */
num_padding_bytes =
num_padding_bytes * num_of_elems;
new_tlv_buf = buf_ptr;
}
}
#endif
cmd_param_tlvs_ptr[tlv_index].tlv_ptr = new_tlv_buf;
cmd_param_tlvs_ptr[tlv_index].num_elements =
num_of_elems;
cmd_param_tlvs_ptr[tlv_index].buf_is_allocated = 1; /* Indicates that buffer is allocated */
} else if (tlv_size_diff >= 0) {
/* Warning: some parameter truncation */
if (tlv_size_diff > 0) {
wmi_tlv_print_verbose
("%s: WARN: TLV truncated. tlv_size_diff=%d, curr_tlv_len=%d\n",
__func__, tlv_size_diff, curr_tlv_len);
}
/* TODO: this next line needs more comments and explanation */
cmd_param_tlvs_ptr[tlv_index].tlv_ptr =
(attr_struct_ptr.tag_varied_size
&& !curr_tlv_len) ? NULL : (void *)buf_ptr;
cmd_param_tlvs_ptr[tlv_index].num_elements =
num_of_elems;
cmd_param_tlvs_ptr[tlv_index].buf_is_allocated = 0; /* Indicates that buffer is not allocated */
} else {
void *new_tlv_buf = NULL;
/* Warning: Needs to allocate a larger structure and pad with zeros */
wmi_tlv_print_verbose
("%s: WARN: TLV needs padding. tlv_size_diff=%d\n",
__func__, tlv_size_diff);
#ifndef NO_DYNAMIC_MEM_ALLOC
/* Dynamic memory allocation is supported */
wmi_tlv_os_mem_alloc(os_handle, new_tlv_buf,
(curr_tlv_len - tlv_size_diff));
if (new_tlv_buf == NULL) {
/* Error: unable to alloc memory */
wmi_tlv_print_error
("%s: Error: unable to alloc memory (size=%d) for padding the TLV %d\n",
__func__, (curr_tlv_len - tlv_size_diff),
curr_tlv_tag);
goto Error_wmitlv_check_and_pad_tlvs;
}
wmi_tlv_OS_MEMZERO(new_tlv_buf,
(curr_tlv_len - tlv_size_diff));
wmi_tlv_OS_MEMCPY(new_tlv_buf, (void *)buf_ptr,
curr_tlv_len);
#else
/* Dynamic memory allocation is not supported. Padding has
* to be done with in the existing buffer assuming we have
* enough space to grow */
{
/* Note: tlv_size_diff is a value less than zero */
/* Move the Subsequent TLVs by amount of bytes needs to be padded */
uint8_t *src_addr;
uint8_t *dst_addr;
uint32_t src_len;
num_padding_bytes = (tlv_size_diff * -1);
src_addr = buf_ptr + curr_tlv_len;
dst_addr =
buf_ptr + curr_tlv_len + num_padding_bytes;
src_len =
param_buf_len - (buf_idx + curr_tlv_len);
wmi_tlv_OS_MEMMOVE(dst_addr, src_addr, src_len);
/* Set the padding bytes to zeroes */
wmi_tlv_OS_MEMZERO(src_addr, num_padding_bytes);
new_tlv_buf = buf_ptr;
}
#endif
cmd_param_tlvs_ptr[tlv_index].tlv_ptr = new_tlv_buf;
cmd_param_tlvs_ptr[tlv_index].num_elements =
num_of_elems;
cmd_param_tlvs_ptr[tlv_index].buf_is_allocated = 1; /* Indicates that buffer is allocated */
}
tlv_index++;
remaining_expected_tlvs--;
buf_ptr += curr_tlv_len + num_padding_bytes;
buf_idx += curr_tlv_len + num_padding_bytes;
}
return 0;
Error_wmitlv_check_and_pad_tlvs:
if (is_cmd_id) {
wmitlv_free_allocated_command_tlvs(wmi_cmd_event_id,
wmi_cmd_struct_ptr);
} else {
wmitlv_free_allocated_event_tlvs(wmi_cmd_event_id,
wmi_cmd_struct_ptr);
}
*wmi_cmd_struct_ptr = NULL;
return error;
}
/**
* wmitlv_check_and_pad_event_tlvs() - tlv helper function
* @os_handle: os context handle
* @param_struc_ptr: pointer to tlv structure
* @param_buf_len: length of tlv parameter
* @wmi_cmd_event_id: command event id
* @wmi_cmd_struct_ptr: wmi command structure
*
*
* validate and pad(if necessary) for incoming WMI Event TLVs
*
* Return: 0 if success. Return < 0 if failure.
*/
int
wmitlv_check_and_pad_event_tlvs(void *os_handle, void *param_struc_ptr,
uint32_t param_buf_len,
uint32_t wmi_cmd_event_id,
void **wmi_cmd_struct_ptr)
{
uint32_t is_cmd_id = 0;
return wmitlv_check_and_pad_tlvs
(os_handle, param_struc_ptr, param_buf_len, is_cmd_id,
wmi_cmd_event_id, wmi_cmd_struct_ptr);
}
qdf_export_symbol(wmitlv_check_and_pad_event_tlvs);
/**
* wmitlv_check_and_pad_command_tlvs() - tlv helper function
* @os_handle: os context handle
* @param_struc_ptr: pointer to tlv structure
* @param_buf_len: length of tlv parameter
* @wmi_cmd_event_id: command event id
* @wmi_cmd_struct_ptr: wmi command structure
*
*
* validate and pad(if necessary) for incoming WMI Command TLVs
*
* Return: 0 if success. Return < 0 if failure.
*/
int
wmitlv_check_and_pad_command_tlvs(void *os_handle, void *param_struc_ptr,
uint32_t param_buf_len,
uint32_t wmi_cmd_event_id,
void **wmi_cmd_struct_ptr)
{
uint32_t is_cmd_id = 1;
return wmitlv_check_and_pad_tlvs
(os_handle, param_struc_ptr, param_buf_len, is_cmd_id,
wmi_cmd_event_id, wmi_cmd_struct_ptr);
}
/**
* wmitlv_free_allocated_tlvs() - tlv helper function
* @is_cmd_id: bollean to check if cmd or event tlv
* @cmd_event_id: command or event id
* @wmi_cmd_struct_ptr: wmi command structure
*
*
* free any allocated buffers for WMI Event/Command TLV processing
*
* Return: none
*/
static void wmitlv_free_allocated_tlvs(uint32_t is_cmd_id,
uint32_t cmd_event_id,
void **wmi_cmd_struct_ptr)
{
void *ptr = *wmi_cmd_struct_ptr;
if (!ptr) {
wmi_tlv_print_error("%s: Nothing to free for CMD/Event 0x%x\n",
__func__, cmd_event_id);
return;
}
#ifndef NO_DYNAMIC_MEM_ALLOC
/* macro to free that previously allocated memory for this TLV. When (op==FREE_TLV_ELEM). */
#define WMITLV_OP_FREE_TLV_ELEM_macro(param_ptr, param_len, wmi_cmd_event_id, elem_tlv_tag, elem_struc_type, elem_name, var_len, arr_size) \
if ((((WMITLV_TYPEDEF_STRUCT_PARAMS_TLVS(wmi_cmd_event_id) *)ptr)->WMITLV_FIELD_BUF_IS_ALLOCATED(elem_name)) && \
(((WMITLV_TYPEDEF_STRUCT_PARAMS_TLVS(wmi_cmd_event_id) *)ptr)->elem_name != NULL)) \
{ \
wmi_tlv_os_mem_free(((WMITLV_TYPEDEF_STRUCT_PARAMS_TLVS(wmi_cmd_event_id) *)ptr)->elem_name); \
}
#define WMITLV_FREE_TLV_ELEMS(id) \
case id: \
{ \
WMITLV_TABLE(id, FREE_TLV_ELEM, NULL, 0) \
} \
break;
if (is_cmd_id) {
switch (cmd_event_id) {
WMITLV_ALL_CMD_LIST(WMITLV_FREE_TLV_ELEMS);
default:
wmi_tlv_print_error
("%s: ERROR: Cannot find the TLVs attributes for Cmd=0x%x, %d\n",
__func__, cmd_event_id, cmd_event_id);
}
} else {
switch (cmd_event_id) {
WMITLV_ALL_EVT_LIST(WMITLV_FREE_TLV_ELEMS);
default:
wmi_tlv_print_error
("%s: ERROR: Cannot find the TLVs attributes for Cmd=0x%x, %d\n",
__func__, cmd_event_id, cmd_event_id);
}
}
wmi_tlv_os_mem_free(*wmi_cmd_struct_ptr);
*wmi_cmd_struct_ptr = NULL;
#endif
return;
}
/**
* wmitlv_free_allocated_command_tlvs() - tlv helper function
* @cmd_event_id: command or event id
* @wmi_cmd_struct_ptr: wmi command structure
*
*
* free any allocated buffers for WMI Event/Command TLV processing
*
* Return: none
*/
void wmitlv_free_allocated_command_tlvs(uint32_t cmd_event_id,
void **wmi_cmd_struct_ptr)
{
wmitlv_free_allocated_tlvs(1, cmd_event_id, wmi_cmd_struct_ptr);
}
/**
* wmitlv_free_allocated_event_tlvs() - tlv helper function
* @cmd_event_id: command or event id
* @wmi_cmd_struct_ptr: wmi command structure
*
*
* free any allocated buffers for WMI Event/Command TLV processing
*
* Return: none
*/
void wmitlv_free_allocated_event_tlvs(uint32_t cmd_event_id,
void **wmi_cmd_struct_ptr)
{
wmitlv_free_allocated_tlvs(0, cmd_event_id, wmi_cmd_struct_ptr);
}
qdf_export_symbol(wmitlv_free_allocated_event_tlvs);
/**
* wmi_versions_are_compatible() - tlv helper function
* @vers1: host wmi version
* @vers2: target wmi version
*
*
* check if two given wmi versions are compatible
*
* Return: none
*/
int
wmi_versions_are_compatible(wmi_abi_version *vers1, wmi_abi_version *vers2)
{
if ((vers1->abi_version_ns_0 != vers2->abi_version_ns_0) ||
(vers1->abi_version_ns_1 != vers2->abi_version_ns_1) ||
(vers1->abi_version_ns_2 != vers2->abi_version_ns_2) ||
(vers1->abi_version_ns_3 != vers2->abi_version_ns_3)) {
/* The namespaces are different. Incompatible. */
return 0;
}
if (vers1->abi_version_0 != vers2->abi_version_0) {
/* The major or minor versions are different. Incompatible */
return 0;
}
/* We ignore the build version */
return 1;
}
/**
* wmi_versions_can_downgrade() - tlv helper function
* @version_whitelist_table: version table
* @my_vers: host version
* @opp_vers: target version
* @out_vers: downgraded version
*
*
* check if target wmi version can be downgraded
*
* Return: 0 if success. Return < 0 if failure.
*/
static int
wmi_versions_can_downgrade(int num_whitelist,
wmi_whitelist_version_info *version_whitelist_table,
wmi_abi_version *my_vers,
wmi_abi_version *opp_vers,
wmi_abi_version *out_vers)
{
uint8_t can_try_to_downgrade;
uint32_t my_major_vers = WMI_VER_GET_MAJOR(my_vers->abi_version_0);
uint32_t my_minor_vers = WMI_VER_GET_MINOR(my_vers->abi_version_0);
uint32_t opp_major_vers = WMI_VER_GET_MAJOR(opp_vers->abi_version_0);
uint32_t opp_minor_vers = WMI_VER_GET_MINOR(opp_vers->abi_version_0);
uint32_t downgraded_minor_vers;
if ((my_vers->abi_version_ns_0 != opp_vers->abi_version_ns_0) ||
(my_vers->abi_version_ns_1 != opp_vers->abi_version_ns_1) ||
(my_vers->abi_version_ns_2 != opp_vers->abi_version_ns_2) ||
(my_vers->abi_version_ns_3 != opp_vers->abi_version_ns_3)) {
/* The namespaces are different. Incompatible. */
can_try_to_downgrade = false;
} else if (my_major_vers != opp_major_vers) {
/* Major version is different. Incompatible and cannot downgrade. */
can_try_to_downgrade = false;
} else {
/* Same major version. */
if (my_minor_vers < opp_minor_vers) {
/* Opposite party is newer. Incompatible and cannot downgrade. */
can_try_to_downgrade = false;
} else if (my_minor_vers > opp_minor_vers) {
/* Opposite party is older. Check whitelist if we can downgrade */
can_try_to_downgrade = true;
} else {
/* Same version */
wmi_tlv_OS_MEMCPY(out_vers, my_vers,
sizeof(wmi_abi_version));
return 1;
}
}
if (!can_try_to_downgrade) {
wmi_tlv_print_error("%s: Warning: incompatible WMI version.\n",
__func__);
wmi_tlv_OS_MEMCPY(out_vers, my_vers, sizeof(wmi_abi_version));
return 0;
}
/* Try to see we can downgrade the supported version */
downgraded_minor_vers = my_minor_vers;
while (downgraded_minor_vers > opp_minor_vers) {
uint8_t downgraded = false;
int i;
for (i = 0; i < num_whitelist; i++) {
if (version_whitelist_table[i].major != my_major_vers) {
continue; /* skip */
}
if ((version_whitelist_table[i].namespace_0 !=
my_vers->abi_version_ns_0)
|| (version_whitelist_table[i].namespace_1 !=
my_vers->abi_version_ns_1)
|| (version_whitelist_table[i].namespace_2 !=
my_vers->abi_version_ns_2)
|| (version_whitelist_table[i].namespace_3 !=
my_vers->abi_version_ns_3)) {
continue; /* skip */
}
if (version_whitelist_table[i].minor ==
downgraded_minor_vers) {
/* Found the next version that I can downgrade */
wmi_tlv_print_error
("%s: Note: found a whitelist entry to downgrade. wh. list ver: %d,%d,0x%x 0x%x 0x%x 0x%x\n",
__func__, version_whitelist_table[i].major,
version_whitelist_table[i].minor,
version_whitelist_table[i].namespace_0,
version_whitelist_table[i].namespace_1,
version_whitelist_table[i].namespace_2,
version_whitelist_table[i].namespace_3);
downgraded_minor_vers--;
downgraded = true;
break;
}
}
if (!downgraded) {
break; /* Done since we did not find any whitelist to downgrade version */
}
}
wmi_tlv_OS_MEMCPY(out_vers, my_vers, sizeof(wmi_abi_version));
out_vers->abi_version_0 =
WMI_VER_GET_VERSION_0(my_major_vers, downgraded_minor_vers);
if (downgraded_minor_vers != opp_minor_vers) {
wmi_tlv_print_error
("%s: Warning: incompatible WMI version and cannot downgrade.\n",
__func__);
return 0; /* Incompatible */
} else {
return 1; /* Compatible */
}
}
/**
* wmi_cmp_and_set_abi_version() - tlv helper function
* @version_whitelist_table: version table
* @my_vers: host version
* @opp_vers: target version
* @out_vers: downgraded version
*
* This routine will compare and set the WMI ABI version.
* First, compare my version with the opposite side's version.
* If incompatible, then check the whitelist to see if our side can downgrade.
* Finally, fill in the final ABI version into the output, out_vers.
* Return 0 if the output version is compatible
* Else return 1 if the output version is incompatible
*
* Return: 0 if the output version is compatible else < 0.
*/
int
wmi_cmp_and_set_abi_version(int num_whitelist,
wmi_whitelist_version_info *
version_whitelist_table,
struct _wmi_abi_version *my_vers,
struct _wmi_abi_version *opp_vers,
struct _wmi_abi_version *out_vers)
{
wmi_tlv_print_verbose
("%s: Our WMI Version: Mj=%d, Mn=%d, bd=%d, ns0=0x%x ns1:0x%x ns2:0x%x ns3:0x%x\n",
__func__, WMI_VER_GET_MAJOR(my_vers->abi_version_0),
WMI_VER_GET_MINOR(my_vers->abi_version_0), my_vers->abi_version_1,
my_vers->abi_version_ns_0, my_vers->abi_version_ns_1,
my_vers->abi_version_ns_2, my_vers->abi_version_ns_3);
wmi_tlv_print_verbose
("%s: Opposite side WMI Version: Mj=%d, Mn=%d, bd=%d, ns0=0x%x ns1:0x%x ns2:0x%x ns3:0x%x\n",
__func__, WMI_VER_GET_MAJOR(opp_vers->abi_version_0),
WMI_VER_GET_MINOR(opp_vers->abi_version_0),
opp_vers->abi_version_1, opp_vers->abi_version_ns_0,
opp_vers->abi_version_ns_1, opp_vers->abi_version_ns_2,
opp_vers->abi_version_ns_3);
/* By default, the output version is our version. */
wmi_tlv_OS_MEMCPY(out_vers, my_vers, sizeof(wmi_abi_version));
if (!wmi_versions_are_compatible(my_vers, opp_vers)) {
/* Our host version and the given firmware version are incompatible. */
if (wmi_versions_can_downgrade
(num_whitelist, version_whitelist_table, my_vers, opp_vers,
out_vers)) {
/* We can downgrade our host versions to match firmware. */
wmi_tlv_print_error
("%s: Host downgraded WMI Versions to match fw. Ret version: Mj=%d, Mn=%d, bd=%d, ns0=0x%x ns1:0x%x ns2:0x%x ns3:0x%x\n",
__func__,
WMI_VER_GET_MAJOR(out_vers->abi_version_0),
WMI_VER_GET_MINOR(out_vers->abi_version_0),
out_vers->abi_version_1,
out_vers->abi_version_ns_0,
out_vers->abi_version_ns_1,
out_vers->abi_version_ns_2,
out_vers->abi_version_ns_3);
return 0; /* Compatible */
} else {
/* Warn: We cannot downgrade our host versions to match firmware. */
wmi_tlv_print_error
("%s: WARN: Host WMI Versions mismatch with fw. Ret version: Mj=%d, Mn=%d, bd=%d, ns0=0x%x ns1:0x%x ns2:0x%x ns3:0x%x\n",
__func__,
WMI_VER_GET_MAJOR(out_vers->abi_version_0),
WMI_VER_GET_MINOR(out_vers->abi_version_0),
out_vers->abi_version_1,
out_vers->abi_version_ns_0,
out_vers->abi_version_ns_1,
out_vers->abi_version_ns_2,
out_vers->abi_version_ns_3);
return 1; /* Incompatible */
}
} else {
/* We are compatible. Our host version is the output version */
wmi_tlv_print_verbose
("%s: Host and FW Compatible WMI Versions. Ret version: Mj=%d, Mn=%d, bd=%d, ns0=0x%x ns1:0x%x ns2:0x%x ns3:0x%x\n",
__func__, WMI_VER_GET_MAJOR(out_vers->abi_version_0),
WMI_VER_GET_MINOR(out_vers->abi_version_0),
out_vers->abi_version_1, out_vers->abi_version_ns_0,
out_vers->abi_version_ns_1, out_vers->abi_version_ns_2,
out_vers->abi_version_ns_3);
return 0; /* Compatible */
}
}