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mei: restrict dma ring support to hbm version 2.1 

Only a firmware with version 2.1 and above supports dma ring feature.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2018-07-31 09:35:36 +03:00 committed by Greg Kroah-Hartman
parent 9d89ddfc62
commit c2bd9fc13d
4 changed files with 16 additions and 0 deletions
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2
drivers/misc/mei/debugfs.c
View File

@ -183,6 +183,8 @@ static ssize_t mei_dbgfs_read_devstate(struct file *fp, char __user *ubuf,
dev->hbm_f_fa_supported);
pos += scnprintf(buf + pos, bufsz - pos, "\tOS: %01d\n",
dev->hbm_f_os_supported);
pos += scnprintf(buf + pos, bufsz - pos, "\tDR: %01d\n",
dev->hbm_f_dr_supported);
}
pos += scnprintf(buf + pos, bufsz - pos, "pg: %s, %s\n",

6
drivers/misc/mei/hbm.c
View File

@ -1007,6 +1007,12 @@ static void mei_hbm_config_features(struct mei_device *dev)
/* OS ver message Support */
if (dev->version.major_version >= HBM_MAJOR_VERSION_OS)
dev->hbm_f_os_supported = 1;
/* DMA Ring Support */
if (dev->version.major_version > HBM_MAJOR_VERSION_DR ||
(dev->version.major_version == HBM_MAJOR_VERSION_DR &&
dev->version.minor_version >= HBM_MINOR_VERSION_DR))
dev->hbm_f_dr_supported = 1;
}
/**

6
drivers/misc/mei/hw.h
View File

@ -80,6 +80,12 @@
#define HBM_MINOR_VERSION_OS 0
#define HBM_MAJOR_VERSION_OS 2
/*
* MEI version with dma ring support
*/
#define HBM_MINOR_VERSION_DR 1
#define HBM_MAJOR_VERSION_DR 2
/* Host bus message command opcode */
#define MEI_HBM_CMD_OP_MSK 0x7f
/* Host bus message command RESPONSE */

2
drivers/misc/mei/mei_dev.h
View File

@ -418,6 +418,7 @@ struct mei_fw_version {
* @hbm_f_fa_supported : hbm feature fixed address client
* @hbm_f_ie_supported : hbm feature immediate reply to enum request
* @hbm_f_os_supported : hbm feature support OS ver message
* @hbm_f_dr_supported : hbm feature dma ring supported
*
* @fw_ver : FW versions
*
@ -495,6 +496,7 @@ struct mei_device {
unsigned int hbm_f_fa_supported:1;
unsigned int hbm_f_ie_supported:1;
unsigned int hbm_f_os_supported:1;
unsigned int hbm_f_dr_supported:1;
struct mei_fw_version fw_ver[MEI_MAX_FW_VER_BLOCKS];