diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2018-07-31 09:35:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-02 11:18:30 +0300 |
| commit | c2bd9fc13d0ca1926bfd8b8e6d88f93d84a51f2a (patch) | |
| tree | 929555810f197c6c7b94d018ad28e84500579d05 /drivers/misc/mei | |
| parent | 9d89ddfc624649e200aeec57912635dbe259d07b (diff) | |
| download | linux-c2bd9fc13d0ca1926bfd8b8e6d88f93d84a51f2a.tar.xz | |
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>
Diffstat (limited to 'drivers/misc/mei')
| -rw-r--r-- | drivers/misc/mei/debugfs.c | 2 | ||||
| -rw-r--r-- | drivers/misc/mei/hbm.c | 6 | ||||
| -rw-r--r-- | drivers/misc/mei/hw.h | 6 | ||||
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 2 |
4 files changed, 16 insertions, 0 deletions
diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c index c815da91089c..7b5df8fd6c5a 100644 --- a/drivers/misc/mei/debugfs.c +++ b/drivers/misc/mei/debugfs.c @@ -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", diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index b0086c4aefe4..09e233d4c0de 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -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; } /** diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index 5fb8844a6db5..65655925791a 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -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 */ diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 975afaa38a66..377397e1b5a5 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -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]; |