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usb: gadget: f_gsi: Add support to enable/disable using TCM MEM

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This change adds support to enable/disable using TCM memory for
USB IN data buffer with RMNET interface.

Change-Id: I27f04c1bc170e06ccbc9c57ef0e9b8f870e4fe97
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
This commit is contained in:
Mayank Rana 2021-03-02 14:50:26 -08:00
commit 99e27d7d9b
2 changed files with 44 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

45
drivers/usb/gadget/function/f_gsi.c
View file

@ -501,8 +501,8 @@ static int ipa_connect_channels(struct gsi_data_port *d_port)
struct ipa_req_chan_out_params ipa_in_channel_out_params;
struct ipa_req_chan_out_params ipa_out_channel_out_params;
log_event_dbg("IN: num_bufs:=%zu, buf_len=%zu\n",
d_port->in_request.num_bufs, d_port->in_request.buf_len);
if (gsi->prot_id == IPA_USB_RMNET)
d_port->in_request.use_tcm_mem = gsi->rmnet_use_tcm_mem;
ret = usb_gsi_ep_op(d_port->in_ep, &d_port->in_request,
GSI_EP_OP_PREPARE_TRBS);
@ -512,6 +512,9 @@ static int ipa_connect_channels(struct gsi_data_port *d_port)
return ret;
}
log_event_dbg("IN: num_bufs:=%zu, buf_len=%zu\n",
d_port->in_request.num_bufs, d_port->in_request.buf_len);
ret = usb_gsi_ep_op(d_port->in_ep, &d_port->in_request,
GSI_EP_OP_STARTXFER);
if (ret) {
@ -3797,6 +3800,40 @@ static struct config_item_type gsi_func_ecm_type = {
.ct_owner = THIS_MODULE,
};
static ssize_t gsi_rmnet_use_tcm_mem_show(struct config_item *item, char *page)
{
struct f_gsi *gsi = to_gsi_opts(item)->gsi;
return scnprintf(page, PAGE_SIZE, "%s\n",
gsi->rmnet_use_tcm_mem ? "Enabled" : "Disabled");
}
static ssize_t gsi_rmnet_use_tcm_mem_store(struct config_item *item,
const char *page, size_t len)
{
struct f_gsi *gsi = to_gsi_opts(item)->gsi;
bool enable;
if (kstrtobool(page, &enable))
return -EINVAL;
gsi->rmnet_use_tcm_mem = enable;
return len;
}
CONFIGFS_ATTR(gsi_, rmnet_use_tcm_mem);
static struct configfs_attribute *gsi_rmnet_attrs[] = {
&gsi_attr_info,
&gsi_attr_rmnet_use_tcm_mem,
NULL,
};
static struct config_item_type gsi_func_rmnet_type = {
.ct_item_ops = &gsi_item_ops,
.ct_attrs = gsi_rmnet_attrs,
.ct_owner = THIS_MODULE,
};
static void gsi_inst_clean(struct gsi_opts *opts)
{
if (opts->gsi->c_port.cdev.dev) {
@ -3858,6 +3895,10 @@ static int gsi_set_inst_name(struct usb_function_instance *fi,
}
mutex_unlock(&inst_status[prot_id].gsi_lock);
if (prot_id == IPA_USB_RMNET)
config_group_init_type_name(&opts->func_inst.group,
fi->group.cg_item.ci_name,
&gsi_func_rmnet_type);
if (prot_id == IPA_USB_RNDIS)
config_group_init_type_name(&opts->func_inst.group,
fi->group.cg_item.ci_name,

1
drivers/usb/gadget/function/f_gsi.h
View file

@ -312,6 +312,7 @@ struct f_gsi {
struct gsi_ctrl_port c_port;
void *ipc_log_ctxt;
bool rmnet_dtr_status;
bool rmnet_use_tcm_mem;
bool rwake_inprogress;