#include <linux/usb.h>
#include <linux/kfifo.h>
#include <linux/debugfs.h>
+#include <linux/list.h>
#include <asm/unaligned.h>
+#include "arpc.h"
#include "greybus.h"
+#include "greybus_trace.h"
#include "kernel_ver.h"
#include "connection.h"
-#include "greybus_trace.h"
+
+
+/* Default timeout for USB vendor requests. */
+#define ES2_USB_CTRL_TIMEOUT 500
+
+/* Default timeout for ARPC CPort requests */
+#define ES2_ARPC_CPORT_TIMEOUT 500
+
+/* Fixed CPort numbers */
+#define ES2_CPORT_CDSI0 16
+#define ES2_CPORT_CDSI1 17
/* Memory sizes for the buffers sent to/from the ES2 controller */
#define ES2_GBUF_MSG_SIZE_MAX 2048
+/* Memory sizes for the ARPC buffers */
+#define ARPC_OUT_SIZE_MAX U16_MAX
+#define ARPC_IN_SIZE_MAX 128
+
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x18d1, 0x1eaf) },
{ },
#define APB1_LOG_SIZE SZ_16K
-/* Number of bulk in and bulk out couple */
-#define NUM_BULKS 7
-
/*
* Number of CPort IN urbs in flight at any point in time.
* Adjust if we are having stalls in the USB buffer due to not enough urbs in
/* Number of CPort OUT urbs in flight at any point in time.
* Adjust if we get messages saying we are out of urbs in the system log.
*/
-#define NUM_CPORT_OUT_URB (8 * NUM_BULKS)
+#define NUM_CPORT_OUT_URB 8
+
+/*
+ * Number of ARPC in urbs in flight at any point in time.
+ */
+#define NUM_ARPC_IN_URB 2
/*
* @endpoint: bulk in endpoint for CPort data
u8 *buffer[NUM_CPORT_IN_URB];
};
-/*
- * @endpoint: bulk out endpoint for CPort data
- */
-struct es2_cport_out {
- __u8 endpoint;
-};
-
/**
* es2_ap_dev - ES2 USB Bridge to AP structure
* @usb_dev: pointer to the USB device we are.
* @hd: pointer to our gb_host_device structure
* @cport_in: endpoint, urbs and buffer for cport in messages
- * @cport_out: endpoint for for cport out messages
+ * @cport_out_endpoint: endpoint for for cport out messages
* @cport_out_urb: array of urbs for the CPort out messages
* @cport_out_urb_busy: array of flags to see if the @cport_out_urb is busy or
* not.
* @apb_log_dentry: file system entry for the log file interface
* @apb_log_enable_dentry: file system entry for enabling logging
* @apb_log_fifo: kernel FIFO to carry logged data
+ * @arpc_urb: array of urbs for the ARPC in messages
+ * @arpc_buffer: array of buffers for the @arpc_urb urbs
+ * @arpc_endpoint_in: bulk in endpoint for APBridgeA RPC
+ * @arpc_id_cycle: gives an unique id to ARPC
+ * @arpc_lock: locks ARPC list
+ * @arpcs: list of in progress ARPCs
*/
struct es2_ap_dev {
struct usb_device *usb_dev;
struct usb_interface *usb_intf;
struct gb_host_device *hd;
- struct es2_cport_in cport_in[NUM_BULKS];
- struct es2_cport_out cport_out[NUM_BULKS];
+ struct es2_cport_in cport_in;
+ __u8 cport_out_endpoint;
struct urb *cport_out_urb[NUM_CPORT_OUT_URB];
bool cport_out_urb_busy[NUM_CPORT_OUT_URB];
bool cport_out_urb_cancelled[NUM_CPORT_OUT_URB];
spinlock_t cport_out_urb_lock;
- int *cport_to_ep;
+ bool cdsi1_in_use;
struct task_struct *apb_log_task;
struct dentry *apb_log_dentry;
struct dentry *apb_log_enable_dentry;
DECLARE_KFIFO(apb_log_fifo, char, APB1_LOG_SIZE);
+
+ __u8 arpc_endpoint_in;
+ struct urb *arpc_urb[NUM_ARPC_IN_URB];
+ u8 *arpc_buffer[NUM_ARPC_IN_URB];
+
+ int arpc_id_cycle;
+ spinlock_t arpc_lock;
+ struct list_head arpcs;
};
/**
- * cport_to_ep - information about cport to endpoints mapping
- * @cport_id: the id of cport to map to endpoints
- * @endpoint_in: the endpoint number to use for in transfer
- * @endpoint_out: he endpoint number to use for out transfer
+ * timesync_enable_request - Enable timesync in an APBridge
+ * @count: number of TimeSync Pulses to expect
+ * @frame_time: the initial FrameTime at the first TimeSync Pulse
+ * @strobe_delay: the expected delay in microseconds between each TimeSync Pulse
+ * @refclk: The AP mandated reference clock to run FrameTime at
*/
-struct cport_to_ep {
- __le16 cport_id;
- __u8 endpoint_in;
- __u8 endpoint_out;
+struct timesync_enable_request {
+ __u8 count;
+ __le64 frame_time;
+ __le32 strobe_delay;
+ __le32 refclk;
+} __packed;
+
+/**
+ * timesync_authoritative_request - Transmit authoritative FrameTime to APBridge
+ * @frame_time: An array of authoritative FrameTimes provided by the SVC
+ * and relayed to the APBridge by the AP
+ */
+struct timesync_authoritative_request {
+ __le64 frame_time[GB_TIMESYNC_MAX_STROBES];
+} __packed;
+
+struct arpc {
+ struct list_head list;
+ struct arpc_request_message *req;
+ struct arpc_response_message *resp;
+ struct completion response_received;
+ bool active;
};
static inline struct es2_ap_dev *hd_to_es2(struct gb_host_device *hd)
static void cport_out_callback(struct urb *urb);
static void usb_log_enable(struct es2_ap_dev *es2);
static void usb_log_disable(struct es2_ap_dev *es2);
-
-/* Get the endpoints pair mapped to the cport */
-static int cport_to_ep_pair(struct es2_ap_dev *es2, u16 cport_id)
-{
- if (cport_id >= es2->hd->num_cports)
- return 0;
- return es2->cport_to_ep[cport_id];
-}
-
-#define ES2_TIMEOUT 500 /* 500 ms for the SVC to do something */
-
-/* Disable for now until we work all of this out to keep a warning-free build */
-#if 0
-/* Test if the endpoints pair is already mapped to a cport */
-static int ep_pair_in_use(struct es2_ap_dev *es2, int ep_pair)
-{
- int i;
-
- for (i = 0; i < es2->hd->num_cports; i++) {
- if (es2->cport_to_ep[i] == ep_pair)
- return 1;
- }
- return 0;
-}
-
-/* Configure the endpoint mapping and send the request to APBridge */
-static int map_cport_to_ep(struct es2_ap_dev *es2,
- u16 cport_id, int ep_pair)
-{
- int retval;
- struct cport_to_ep *cport_to_ep;
-
- if (ep_pair < 0 || ep_pair >= NUM_BULKS)
- return -EINVAL;
- if (cport_id >= es2->hd->num_cports)
- return -EINVAL;
- if (ep_pair && ep_pair_in_use(es2, ep_pair))
- return -EINVAL;
-
- cport_to_ep = kmalloc(sizeof(*cport_to_ep), GFP_KERNEL);
- if (!cport_to_ep)
- return -ENOMEM;
-
- es2->cport_to_ep[cport_id] = ep_pair;
- cport_to_ep->cport_id = cpu_to_le16(cport_id);
- cport_to_ep->endpoint_in = es2->cport_in[ep_pair].endpoint;
- cport_to_ep->endpoint_out = es2->cport_out[ep_pair].endpoint;
-
- retval = usb_control_msg(es2->usb_dev,
- usb_sndctrlpipe(es2->usb_dev, 0),
- GB_APB_REQUEST_EP_MAPPING,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
- 0x00, 0x00,
- (char *)cport_to_ep,
- sizeof(*cport_to_ep),
- ES2_TIMEOUT);
- if (retval == sizeof(*cport_to_ep))
- retval = 0;
- kfree(cport_to_ep);
-
- return retval;
-}
-
-/* Unmap a cport: use the muxed endpoints pair */
-static int unmap_cport(struct es2_ap_dev *es2, u16 cport_id)
-{
- return map_cport_to_ep(es2, cport_id, 0);
-}
-#endif
+static int arpc_sync(struct es2_ap_dev *es2, u8 type, void *payload,
+ size_t size, int *result, unsigned int timeout);
static int output_sync(struct es2_ap_dev *es2, void *req, u16 size, u8 cmd)
{
cmd,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_INTERFACE,
- 0, 0, data, size, ES2_TIMEOUT);
+ 0, 0, data, size, ES2_USB_CTRL_TIMEOUT);
if (retval < 0)
dev_err(&udev->dev, "%s: return error %d\n", __func__, retval);
else
}
}
+static int es2_arpc_in_enable(struct es2_ap_dev *es2)
+{
+ struct urb *urb;
+ int ret;
+ int i;
+
+ for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
+ urb = es2->arpc_urb[i];
+
+ ret = usb_submit_urb(urb, GFP_KERNEL);
+ if (ret) {
+ dev_err(&es2->usb_dev->dev,
+ "failed to submit arpc in-urb: %d\n", ret);
+ goto err_kill_urbs;
+ }
+ }
+
+ return 0;
+
+err_kill_urbs:
+ for (--i; i >= 0; --i) {
+ urb = es2->arpc_urb[i];
+ usb_kill_urb(urb);
+ }
+
+ return ret;
+}
+
+static void es2_arpc_in_disable(struct es2_ap_dev *es2)
+{
+ struct urb *urb;
+ int i;
+
+ for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
+ urb = es2->arpc_urb[i];
+ usb_kill_urb(urb);
+ }
+}
+
static struct urb *next_free_urb(struct es2_ap_dev *es2, gfp_t gfp_mask)
{
struct urb *urb = NULL;
size_t buffer_size;
int retval;
struct urb *urb;
- int ep_pair;
unsigned long flags;
/*
buffer_size = sizeof(*message->header) + message->payload_size;
- ep_pair = cport_to_ep_pair(es2, cport_id);
usb_fill_bulk_urb(urb, udev,
usb_sndbulkpipe(udev,
- es2->cport_out[ep_pair].endpoint),
+ es2->cport_out_endpoint),
message->buffer, buffer_size,
cport_out_callback, message);
urb->transfer_flags |= URB_ZERO_PACKET;
- trace_gb_host_device_send(hd, cport_id, buffer_size);
+
+ trace_gb_message_submit(message);
+
retval = usb_submit_urb(urb, gfp_mask);
if (retval) {
dev_err(&udev->dev, "failed to submit out-urb: %d\n", retval);
usb_free_urb(urb);
}
-static int cport_reset(struct gb_host_device *hd, u16 cport_id)
+static int es2_cport_allocate(struct gb_host_device *hd, int cport_id,
+ unsigned long flags)
+{
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct ida *id_map = &hd->cport_id_map;
+ int ida_start, ida_end;
+
+ switch (cport_id) {
+ case ES2_CPORT_CDSI0:
+ case ES2_CPORT_CDSI1:
+ dev_err(&hd->dev, "cport %d not available\n", cport_id);
+ return -EBUSY;
+ }
+
+ if (flags & GB_CONNECTION_FLAG_OFFLOADED &&
+ flags & GB_CONNECTION_FLAG_CDSI1) {
+ if (es2->cdsi1_in_use) {
+ dev_err(&hd->dev, "CDSI1 already in use\n");
+ return -EBUSY;
+ }
+
+ es2->cdsi1_in_use = true;
+
+ return ES2_CPORT_CDSI1;
+ }
+
+ if (cport_id < 0) {
+ ida_start = 0;
+ ida_end = hd->num_cports;
+ } else if (cport_id < hd->num_cports) {
+ ida_start = cport_id;
+ ida_end = cport_id + 1;
+ } else {
+ dev_err(&hd->dev, "cport %d not available\n", cport_id);
+ return -EINVAL;
+ }
+
+ return ida_simple_get(id_map, ida_start, ida_end, GFP_KERNEL);
+}
+
+static void es2_cport_release(struct gb_host_device *hd, u16 cport_id)
+{
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+
+ switch (cport_id) {
+ case ES2_CPORT_CDSI1:
+ es2->cdsi1_in_use = false;
+ return;
+ }
+
+ ida_simple_remove(&hd->cport_id_map, cport_id);
+}
+
+static int cport_enable(struct gb_host_device *hd, u16 cport_id,
+ unsigned long flags)
{
struct es2_ap_dev *es2 = hd_to_es2(hd);
struct usb_device *udev = es2->usb_dev;
- int retval;
+ struct gb_apb_request_cport_flags *req;
+ u32 connection_flags;
+ int ret;
- retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
- GB_APB_REQUEST_RESET_CPORT,
- USB_DIR_OUT | USB_TYPE_VENDOR |
- USB_RECIP_INTERFACE, cport_id, 0,
- NULL, 0, ES2_TIMEOUT);
- if (retval < 0) {
- dev_err(&udev->dev, "failed to reset cport %u: %d\n", cport_id,
- retval);
- return retval;
+ req = kzalloc(sizeof(*req), GFP_KERNEL);
+ if (!req)
+ return -ENOMEM;
+
+ connection_flags = 0;
+ if (flags & GB_CONNECTION_FLAG_CONTROL)
+ connection_flags |= GB_APB_CPORT_FLAG_CONTROL;
+ if (flags & GB_CONNECTION_FLAG_HIGH_PRIO)
+ connection_flags |= GB_APB_CPORT_FLAG_HIGH_PRIO;
+
+ req->flags = cpu_to_le32(connection_flags);
+
+ dev_dbg(&hd->dev, "%s - cport = %u, flags = %02x\n", __func__,
+ cport_id, connection_flags);
+
+ ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ GB_APB_REQUEST_CPORT_FLAGS,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, cport_id, 0,
+ req, sizeof(*req), ES2_USB_CTRL_TIMEOUT);
+ if (ret != sizeof(*req)) {
+ dev_err(&udev->dev, "failed to set cport flags for port %d\n",
+ cport_id);
+ if (ret >= 0)
+ ret = -EIO;
+
+ goto out;
+ }
+
+ ret = 0;
+out:
+ kfree(req);
+
+ return ret;
+}
+
+static int es2_cport_connected(struct gb_host_device *hd, u16 cport_id)
+{
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct device *dev = &es2->usb_dev->dev;
+ struct arpc_cport_connected_req req;
+ int ret;
+
+ req.cport_id = cpu_to_le16(cport_id);
+ ret = arpc_sync(es2, ARPC_TYPE_CPORT_CONNECTED, &req, sizeof(req),
+ NULL, ES2_ARPC_CPORT_TIMEOUT);
+ if (ret) {
+ dev_err(dev, "failed to set connected state for cport %u: %d\n",
+ cport_id, ret);
+ return ret;
}
return 0;
}
-static int cport_enable(struct gb_host_device *hd, u16 cport_id)
+static int es2_cport_flush(struct gb_host_device *hd, u16 cport_id)
{
- int retval;
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct device *dev = &es2->usb_dev->dev;
+ struct arpc_cport_flush_req req;
+ int ret;
- if (cport_id != GB_SVC_CPORT_ID) {
- retval = cport_reset(hd, cport_id);
- if (retval)
- return retval;
+ req.cport_id = cpu_to_le16(cport_id);
+ ret = arpc_sync(es2, ARPC_TYPE_CPORT_FLUSH, &req, sizeof(req),
+ NULL, ES2_ARPC_CPORT_TIMEOUT);
+ if (ret) {
+ dev_err(dev, "failed to flush cport %u: %d\n", cport_id, ret);
+ return ret;
}
return 0;
}
-static int latency_tag_enable(struct gb_host_device *hd, u16 cport_id)
+static int es2_cport_shutdown(struct gb_host_device *hd, u16 cport_id,
+ u8 phase, unsigned int timeout)
{
- int retval;
struct es2_ap_dev *es2 = hd_to_es2(hd);
- struct usb_device *udev = es2->usb_dev;
+ struct device *dev = &es2->usb_dev->dev;
+ struct arpc_cport_shutdown_req req;
+ int result;
+ int ret;
- if (!cport_id_valid(hd, cport_id)) {
- dev_err(&udev->dev, "invalid cport %u\n", cport_id);
+ if (timeout > U16_MAX)
return -EINVAL;
+
+ req.cport_id = cpu_to_le16(cport_id);
+ req.timeout = cpu_to_le16(timeout);
+ req.phase = phase;
+ ret = arpc_sync(es2, ARPC_TYPE_CPORT_SHUTDOWN, &req, sizeof(req),
+ &result, ES2_ARPC_CPORT_TIMEOUT + timeout);
+ if (ret) {
+ dev_err(dev, "failed to send shutdown over cport %u: %d (%d)\n",
+ cport_id, ret, result);
+ return ret;
}
+ return 0;
+}
+
+static int es2_cport_quiesce(struct gb_host_device *hd, u16 cport_id,
+ size_t peer_space, unsigned int timeout)
+{
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct device *dev = &es2->usb_dev->dev;
+ struct arpc_cport_quiesce_req req;
+ int result;
+ int ret;
+
+ if (peer_space > U16_MAX)
+ return -EINVAL;
+
+ if (timeout > U16_MAX)
+ return -EINVAL;
+
+ req.cport_id = cpu_to_le16(cport_id);
+ req.peer_space = cpu_to_le16(peer_space);
+ req.timeout = cpu_to_le16(timeout);
+ ret = arpc_sync(es2, ARPC_TYPE_CPORT_QUIESCE, &req, sizeof(req),
+ &result, ES2_ARPC_CPORT_TIMEOUT + timeout);
+ if (ret) {
+ dev_err(dev, "failed to quiesce cport %u: %d (%d)\n",
+ cport_id, ret, result);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int es2_cport_clear(struct gb_host_device *hd, u16 cport_id)
+{
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct device *dev = &es2->usb_dev->dev;
+ struct arpc_cport_clear_req req;
+ int ret;
+
+ req.cport_id = cpu_to_le16(cport_id);
+ ret = arpc_sync(es2, ARPC_TYPE_CPORT_CLEAR, &req, sizeof(req),
+ NULL, ES2_ARPC_CPORT_TIMEOUT);
+ if (ret) {
+ dev_err(dev, "failed to clear cport %u: %d\n", cport_id, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int latency_tag_enable(struct gb_host_device *hd, u16 cport_id)
+{
+ int retval;
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct usb_device *udev = es2->usb_dev;
+
retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
GB_APB_REQUEST_LATENCY_TAG_EN,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_INTERFACE, cport_id, 0, NULL,
- 0, ES2_TIMEOUT);
+ 0, ES2_USB_CTRL_TIMEOUT);
if (retval < 0)
dev_err(&udev->dev, "Cannot enable latency tag for cport %d\n",
struct es2_ap_dev *es2 = hd_to_es2(hd);
struct usb_device *udev = es2->usb_dev;
- if (!cport_id_valid(hd, cport_id)) {
- dev_err(&udev->dev, "invalid cport %u\n", cport_id);
- return -EINVAL;
- }
-
retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
GB_APB_REQUEST_LATENCY_TAG_DIS,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_INTERFACE, cport_id, 0, NULL,
- 0, ES2_TIMEOUT);
+ 0, ES2_USB_CTRL_TIMEOUT);
if (retval < 0)
dev_err(&udev->dev, "Cannot disable latency tag for cport %d\n",
return retval;
}
-static int cport_features_enable(struct gb_host_device *hd, u16 cport_id)
+static int timesync_enable(struct gb_host_device *hd, u8 count,
+ u64 frame_time, u32 strobe_delay, u32 refclk)
{
int retval;
struct es2_ap_dev *es2 = hd_to_es2(hd);
struct usb_device *udev = es2->usb_dev;
+ struct gb_control_timesync_enable_request *request;
+
+ request = kzalloc(sizeof(*request), GFP_KERNEL);
+ if (!request)
+ return -ENOMEM;
+ request->count = count;
+ request->frame_time = cpu_to_le64(frame_time);
+ request->strobe_delay = cpu_to_le32(strobe_delay);
+ request->refclk = cpu_to_le32(refclk);
retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
- GB_APB_REQUEST_CPORT_FEAT_EN,
+ GB_APB_REQUEST_TIMESYNC_ENABLE,
USB_DIR_OUT | USB_TYPE_VENDOR |
- USB_RECIP_INTERFACE, cport_id, 0, NULL,
- 0, ES2_TIMEOUT);
+ USB_RECIP_INTERFACE, 0, 0, request,
+ sizeof(*request), ES2_USB_CTRL_TIMEOUT);
if (retval < 0)
- dev_err(&udev->dev, "Cannot enable CPort features for cport %u: %d\n",
- cport_id, retval);
+ dev_err(&udev->dev, "Cannot enable timesync %d\n", retval);
+
+ kfree(request);
return retval;
}
-static int cport_features_disable(struct gb_host_device *hd, u16 cport_id)
+static int timesync_disable(struct gb_host_device *hd)
{
int retval;
struct es2_ap_dev *es2 = hd_to_es2(hd);
struct usb_device *udev = es2->usb_dev;
retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
- GB_APB_REQUEST_CPORT_FEAT_DIS,
+ GB_APB_REQUEST_TIMESYNC_DISABLE,
USB_DIR_OUT | USB_TYPE_VENDOR |
- USB_RECIP_INTERFACE, cport_id, 0, NULL,
- 0, ES2_TIMEOUT);
+ USB_RECIP_INTERFACE, 0, 0, NULL,
+ 0, ES2_USB_CTRL_TIMEOUT);
if (retval < 0)
- dev_err(&udev->dev,
- "Cannot disable CPort features for cport %u: %d\n",
- cport_id, retval);
+ dev_err(&udev->dev, "Cannot disable timesync %d\n", retval);
+
+ return retval;
+}
+
+static int timesync_authoritative(struct gb_host_device *hd, u64 *frame_time)
+{
+ int retval, i;
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct usb_device *udev = es2->usb_dev;
+ struct timesync_authoritative_request *request;
+
+ request = kzalloc(sizeof(*request), GFP_KERNEL);
+ if (!request)
+ return -ENOMEM;
+
+ for (i = 0; i < GB_TIMESYNC_MAX_STROBES; i++)
+ request->frame_time[i] = cpu_to_le64(frame_time[i]);
+
+ retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ GB_APB_REQUEST_TIMESYNC_AUTHORITATIVE,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, 0, 0, request,
+ sizeof(*request), ES2_USB_CTRL_TIMEOUT);
+ if (retval < 0)
+ dev_err(&udev->dev, "Cannot timesync authoritative out %d\n", retval);
+
+ kfree(request);
+ return retval;
+}
+
+static int timesync_get_last_event(struct gb_host_device *hd, u64 *frame_time)
+{
+ int retval;
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+ struct usb_device *udev = es2->usb_dev;
+ __le64 *response_frame_time;
+
+ response_frame_time = kzalloc(sizeof(*response_frame_time), GFP_KERNEL);
+ if (!response_frame_time)
+ return -ENOMEM;
+
+ retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ GB_APB_REQUEST_TIMESYNC_GET_LAST_EVENT,
+ USB_DIR_IN | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, 0, 0, response_frame_time,
+ sizeof(*response_frame_time),
+ ES2_USB_CTRL_TIMEOUT);
+
+ if (retval != sizeof(*response_frame_time)) {
+ dev_err(&udev->dev, "Cannot get last TimeSync event: %d\n",
+ retval);
+
+ if (retval >= 0)
+ retval = -EIO;
+
+ goto out;
+ }
+ *frame_time = le64_to_cpu(*response_frame_time);
+ retval = 0;
+out:
+ kfree(response_frame_time);
return retval;
}
static struct gb_hd_driver es2_driver = {
- .hd_priv_size = sizeof(struct es2_ap_dev),
- .message_send = message_send,
- .message_cancel = message_cancel,
- .cport_enable = cport_enable,
- .latency_tag_enable = latency_tag_enable,
- .latency_tag_disable = latency_tag_disable,
- .output = output,
- .cport_features_enable = cport_features_enable,
- .cport_features_disable = cport_features_disable,
+ .hd_priv_size = sizeof(struct es2_ap_dev),
+ .message_send = message_send,
+ .message_cancel = message_cancel,
+ .cport_allocate = es2_cport_allocate,
+ .cport_release = es2_cport_release,
+ .cport_enable = cport_enable,
+ .cport_connected = es2_cport_connected,
+ .cport_flush = es2_cport_flush,
+ .cport_shutdown = es2_cport_shutdown,
+ .cport_quiesce = es2_cport_quiesce,
+ .cport_clear = es2_cport_clear,
+ .latency_tag_enable = latency_tag_enable,
+ .latency_tag_disable = latency_tag_disable,
+ .output = output,
+ .timesync_enable = timesync_enable,
+ .timesync_disable = timesync_disable,
+ .timesync_authoritative = timesync_authoritative,
+ .timesync_get_last_event = timesync_get_last_event,
};
/* Common function to report consistent warnings based on URB status */
static void es2_destroy(struct es2_ap_dev *es2)
{
struct usb_device *udev;
- int bulk_in;
+ struct urb *urb;
int i;
debugfs_remove(es2->apb_log_enable_dentry);
/* Tear down everything! */
for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
- struct urb *urb = es2->cport_out_urb[i];
-
- if (!urb)
- break;
+ urb = es2->cport_out_urb[i];
usb_kill_urb(urb);
usb_free_urb(urb);
es2->cport_out_urb[i] = NULL;
es2->cport_out_urb_busy[i] = false; /* just to be anal */
}
- for (bulk_in = 0; bulk_in < NUM_BULKS; bulk_in++) {
- struct es2_cport_in *cport_in = &es2->cport_in[bulk_in];
-
- for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
- struct urb *urb = cport_in->urb[i];
+ for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
+ usb_free_urb(es2->arpc_urb[i]);
+ kfree(es2->arpc_buffer[i]);
+ es2->arpc_buffer[i] = NULL;
+ }
- if (!urb)
- break;
- usb_free_urb(urb);
- kfree(cport_in->buffer[i]);
- cport_in->buffer[i] = NULL;
- }
+ for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
+ usb_free_urb(es2->cport_in.urb[i]);
+ kfree(es2->cport_in.buffer[i]);
+ es2->cport_in.buffer[i] = NULL;
}
- kfree(es2->cport_to_ep);
+ /* release reserved CDSI0 and CDSI1 cports */
+ gb_hd_cport_release_reserved(es2->hd, ES2_CPORT_CDSI1);
+ gb_hd_cport_release_reserved(es2->hd, ES2_CPORT_CDSI0);
udev = es2->usb_dev;
gb_hd_put(es2->hd);
usb_put_dev(udev);
}
-static void ap_disconnect(struct usb_interface *interface)
-{
- struct es2_ap_dev *es2 = usb_get_intfdata(interface);
- int i;
-
- for (i = 0; i < NUM_BULKS; ++i)
- es2_cport_in_disable(es2, &es2->cport_in[i]);
-
- gb_hd_del(es2->hd);
-
- es2_destroy(es2);
-}
-
static void cport_in_callback(struct urb *urb)
{
struct gb_host_device *hd = urb->context;
if (status) {
if ((status == -EAGAIN) || (status == -EPROTO))
goto exit;
+
+ /* The urb is being unlinked */
+ if (status == -ENOENT || status == -ESHUTDOWN)
+ return;
+
dev_err(dev, "urb cport in error %d (dropped)\n", status);
return;
}
cport_id = gb_message_cport_unpack(header);
if (cport_id_valid(hd, cport_id)) {
- trace_gb_host_device_recv(hd, cport_id, urb->actual_length);
greybus_data_rcvd(hd, cport_id, urb->transfer_buffer,
urb->actual_length);
} else {
free_urb(es2, urb);
}
+static struct arpc *arpc_alloc(void *payload, u16 size, u8 type)
+{
+ struct arpc *rpc;
+
+ if (size + sizeof(*rpc->req) > ARPC_OUT_SIZE_MAX)
+ return NULL;
+
+ rpc = kzalloc(sizeof(*rpc), GFP_KERNEL);
+ if (!rpc)
+ return NULL;
+
+ INIT_LIST_HEAD(&rpc->list);
+ rpc->req = kzalloc(sizeof(*rpc->req) + size, GFP_KERNEL);
+ if (!rpc->req)
+ goto err_free_rpc;
+
+ rpc->resp = kzalloc(sizeof(*rpc->resp), GFP_KERNEL);
+ if (!rpc->resp)
+ goto err_free_req;
+
+ rpc->req->type = type;
+ rpc->req->size = cpu_to_le16(sizeof(rpc->req) + size);
+ memcpy(rpc->req->data, payload, size);
+
+ init_completion(&rpc->response_received);
+
+ return rpc;
+
+err_free_req:
+ kfree(rpc->req);
+err_free_rpc:
+ kfree(rpc);
+
+ return NULL;
+}
+
+static void arpc_free(struct arpc *rpc)
+{
+ kfree(rpc->req);
+ kfree(rpc->resp);
+ kfree(rpc);
+}
+
+static struct arpc *arpc_find(struct es2_ap_dev *es2, __le16 id)
+{
+ struct arpc *rpc;
+
+ list_for_each_entry(rpc, &es2->arpcs, list) {
+ if (rpc->req->id == id)
+ return rpc;
+ }
+
+ return NULL;
+}
+
+static void arpc_add(struct es2_ap_dev *es2, struct arpc *rpc)
+{
+ rpc->active = true;
+ rpc->req->id = cpu_to_le16(es2->arpc_id_cycle++);
+ list_add_tail(&rpc->list, &es2->arpcs);
+}
+
+static void arpc_del(struct es2_ap_dev *es2, struct arpc *rpc)
+{
+ if (rpc->active) {
+ rpc->active = false;
+ list_del(&rpc->list);
+ }
+}
+
+static int arpc_send(struct es2_ap_dev *es2, struct arpc *rpc, int timeout)
+{
+ struct usb_device *udev = es2->usb_dev;
+ int retval;
+
+ retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ GB_APB_REQUEST_ARPC_RUN,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE,
+ 0, 0,
+ rpc->req, le16_to_cpu(rpc->req->size),
+ ES2_USB_CTRL_TIMEOUT);
+ if (retval != le16_to_cpu(rpc->req->size)) {
+ dev_err(&udev->dev,
+ "failed to send ARPC request %d: %d\n",
+ rpc->req->type, retval);
+ if (retval > 0)
+ retval = -EIO;
+ return retval;
+ }
+
+ return 0;
+}
+
+static int arpc_sync(struct es2_ap_dev *es2, u8 type, void *payload,
+ size_t size, int *result, unsigned int timeout)
+{
+ struct arpc *rpc;
+ unsigned long flags;
+ int retval;
+
+ if (result)
+ *result = 0;
+
+ rpc = arpc_alloc(payload, size, type);
+ if (!rpc)
+ return -ENOMEM;
+
+ spin_lock_irqsave(&es2->arpc_lock, flags);
+ arpc_add(es2, rpc);
+ spin_unlock_irqrestore(&es2->arpc_lock, flags);
+
+ retval = arpc_send(es2, rpc, timeout);
+ if (retval)
+ goto out_arpc_del;
+
+ retval = wait_for_completion_interruptible_timeout(
+ &rpc->response_received,
+ msecs_to_jiffies(timeout));
+ if (retval <= 0) {
+ if (!retval)
+ retval = -ETIMEDOUT;
+ goto out_arpc_del;
+ }
+
+ if (rpc->resp->result) {
+ retval = -EREMOTEIO;
+ if (result)
+ *result = rpc->resp->result;
+ } else {
+ retval = 0;
+ }
+
+out_arpc_del:
+ spin_lock_irqsave(&es2->arpc_lock, flags);
+ arpc_del(es2, rpc);
+ spin_unlock_irqrestore(&es2->arpc_lock, flags);
+ arpc_free(rpc);
+
+ if (retval < 0 && retval != -EREMOTEIO) {
+ dev_err(&es2->usb_dev->dev,
+ "failed to execute ARPC: %d\n", retval);
+ }
+
+ return retval;
+}
+
+static void arpc_in_callback(struct urb *urb)
+{
+ struct es2_ap_dev *es2 = urb->context;
+ struct device *dev = &urb->dev->dev;
+ int status = check_urb_status(urb);
+ struct arpc *rpc;
+ struct arpc_response_message *resp;
+ unsigned long flags;
+ int retval;
+
+ if (status) {
+ if ((status == -EAGAIN) || (status == -EPROTO))
+ goto exit;
+
+ /* The urb is being unlinked */
+ if (status == -ENOENT || status == -ESHUTDOWN)
+ return;
+
+ dev_err(dev, "arpc in-urb error %d (dropped)\n", status);
+ return;
+ }
+
+ if (urb->actual_length < sizeof(*resp)) {
+ dev_err(dev, "short aprc response received\n");
+ goto exit;
+ }
+
+ resp = urb->transfer_buffer;
+ spin_lock_irqsave(&es2->arpc_lock, flags);
+ rpc = arpc_find(es2, resp->id);
+ if (!rpc) {
+ dev_err(dev, "invalid arpc response id received: %u\n",
+ le16_to_cpu(resp->id));
+ spin_unlock_irqrestore(&es2->arpc_lock, flags);
+ goto exit;
+ }
+
+ arpc_del(es2, rpc);
+ memcpy(rpc->resp, resp, sizeof(*resp));
+ complete(&rpc->response_received);
+ spin_unlock_irqrestore(&es2->arpc_lock, flags);
+
+exit:
+ /* put our urb back in the request pool */
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval)
+ dev_err(dev, "failed to resubmit arpc in-urb: %d\n", retval);
+}
+
#define APB1_LOG_MSG_SIZE 64
static void apb_log_get(struct es2_ap_dev *es2, char *buf)
{
int retval;
- /* SVC messages go down our control pipe */
do {
retval = usb_control_msg(es2->usb_dev,
usb_rcvctrlpipe(es2->usb_dev, 0),
0x00, 0x00,
buf,
APB1_LOG_MSG_SIZE,
- ES2_TIMEOUT);
+ ES2_USB_CTRL_TIMEOUT);
if (retval > 0)
kfifo_in(&es2->apb_log_fifo, buf, retval);
} while (retval > 0);
return;
/* XXX We will need to rename this per APB */
es2->apb_log_dentry = debugfs_create_file("apb_log", S_IRUGO,
- gb_debugfs_get(), NULL,
+ gb_debugfs_get(), es2,
&apb_log_fops);
}
GB_APB_REQUEST_CPORT_COUNT,
USB_DIR_IN | USB_TYPE_VENDOR |
USB_RECIP_INTERFACE, 0, 0, cport_count,
- sizeof(*cport_count), ES2_TIMEOUT);
+ sizeof(*cport_count), ES2_USB_CTRL_TIMEOUT);
if (retval != sizeof(*cport_count)) {
dev_err(&udev->dev, "Cannot retrieve CPort count: %d\n",
retval);
struct usb_device *udev;
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
- int bulk_in = 0;
- int bulk_out = 0;
- int retval = -ENOMEM;
+ __u8 ep_addr;
+ int retval;
int i;
int num_cports;
- int cport_id;
+ bool bulk_out_found = false;
+ bool bulk_in_found = false;
+ bool arpc_in_found = false;
udev = usb_get_dev(interface_to_usbdev(interface));
return PTR_ERR(hd);
}
- /*
- * CPorts 16 and 17 are reserved for CDSI0 and CDSI1, make sure they
- * won't be allocated dynamically.
- */
- do {
- cport_id = ida_simple_get(&hd->cport_id_map, 16, 18, GFP_KERNEL);
- } while (cport_id > 0);
-
es2 = hd_to_es2(hd);
es2->hd = hd;
es2->usb_intf = interface;
INIT_KFIFO(es2->apb_log_fifo);
usb_set_intfdata(interface, es2);
- es2->cport_to_ep = kcalloc(hd->num_cports, sizeof(*es2->cport_to_ep),
- GFP_KERNEL);
- if (!es2->cport_to_ep) {
- retval = -ENOMEM;
+ /*
+ * Reserve the CDSI0 and CDSI1 CPorts so they won't be allocated
+ * dynamically.
+ */
+ retval = gb_hd_cport_reserve(hd, ES2_CPORT_CDSI0);
+ if (retval)
+ goto error;
+ retval = gb_hd_cport_reserve(hd, ES2_CPORT_CDSI1);
+ if (retval)
goto error;
- }
/* find all bulk endpoints */
iface_desc = interface->cur_altsetting;
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
endpoint = &iface_desc->endpoint[i].desc;
+ ep_addr = endpoint->bEndpointAddress;
if (usb_endpoint_is_bulk_in(endpoint)) {
- es2->cport_in[bulk_in++].endpoint =
- endpoint->bEndpointAddress;
- } else if (usb_endpoint_is_bulk_out(endpoint)) {
- es2->cport_out[bulk_out++].endpoint =
- endpoint->bEndpointAddress;
- } else {
- dev_err(&udev->dev,
- "Unknown endpoint type found, address 0x%02x\n",
- endpoint->bEndpointAddress);
+ if (!bulk_in_found) {
+ es2->cport_in.endpoint = ep_addr;
+ bulk_in_found = true;
+ } else if (!arpc_in_found) {
+ es2->arpc_endpoint_in = ep_addr;
+ arpc_in_found = true;
+ } else {
+ dev_warn(&udev->dev,
+ "Unused bulk IN endpoint found: 0x%02x\n",
+ ep_addr);
+ }
+ continue;
+ }
+ if (usb_endpoint_is_bulk_out(endpoint)) {
+ if (!bulk_out_found) {
+ es2->cport_out_endpoint = ep_addr;
+ bulk_out_found = true;
+ } else {
+ dev_warn(&udev->dev,
+ "Unused bulk OUT endpoint found: 0x%02x\n",
+ ep_addr);
+ }
+ continue;
}
+ dev_warn(&udev->dev,
+ "Unknown endpoint type found, address 0x%02x\n",
+ ep_addr);
}
- if (bulk_in != NUM_BULKS || bulk_out != NUM_BULKS) {
+ if (!bulk_in_found || !arpc_in_found || !bulk_out_found) {
dev_err(&udev->dev, "Not enough endpoints found in device, aborting!\n");
+ retval = -ENODEV;
goto error;
}
/* Allocate buffers for our cport in messages */
- for (bulk_in = 0; bulk_in < NUM_BULKS; bulk_in++) {
- struct es2_cport_in *cport_in = &es2->cport_in[bulk_in];
-
- for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
- struct urb *urb;
- u8 *buffer;
-
- urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb)
- goto error;
- buffer = kmalloc(ES2_GBUF_MSG_SIZE_MAX, GFP_KERNEL);
- if (!buffer)
- goto error;
-
- usb_fill_bulk_urb(urb, udev,
- usb_rcvbulkpipe(udev,
- cport_in->endpoint),
- buffer, ES2_GBUF_MSG_SIZE_MAX,
- cport_in_callback, hd);
- cport_in->urb[i] = urb;
- cport_in->buffer[i] = buffer;
+ for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
+ struct urb *urb;
+ u8 *buffer;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb) {
+ retval = -ENOMEM;
+ goto error;
+ }
+ es2->cport_in.urb[i] = urb;
+
+ buffer = kmalloc(ES2_GBUF_MSG_SIZE_MAX, GFP_KERNEL);
+ if (!buffer) {
+ retval = -ENOMEM;
+ goto error;
}
+
+ usb_fill_bulk_urb(urb, udev,
+ usb_rcvbulkpipe(udev, es2->cport_in.endpoint),
+ buffer, ES2_GBUF_MSG_SIZE_MAX,
+ cport_in_callback, hd);
+
+ es2->cport_in.buffer[i] = buffer;
+ }
+
+ /* Allocate buffers for ARPC in messages */
+ for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
+ struct urb *urb;
+ u8 *buffer;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb) {
+ retval = -ENOMEM;
+ goto error;
+ }
+ es2->arpc_urb[i] = urb;
+
+ buffer = kmalloc(ARPC_IN_SIZE_MAX, GFP_KERNEL);
+ if (!buffer) {
+ retval = -ENOMEM;
+ goto error;
+ }
+
+ usb_fill_bulk_urb(urb, udev,
+ usb_rcvbulkpipe(udev,
+ es2->arpc_endpoint_in),
+ buffer, ARPC_IN_SIZE_MAX,
+ arpc_in_callback, es2);
+
+ es2->arpc_buffer[i] = buffer;
}
/* Allocate urbs for our CPort OUT messages */
struct urb *urb;
urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb)
+ if (!urb) {
+ retval = -ENOMEM;
goto error;
+ }
es2->cport_out_urb[i] = urb;
es2->cport_out_urb_busy[i] = false; /* just to be anal */
gb_debugfs_get(), es2,
&apb_log_enable_fops);
+ INIT_LIST_HEAD(&es2->arpcs);
+ spin_lock_init(&es2->arpc_lock);
+
+ if (es2_arpc_in_enable(es2))
+ goto error;
+
retval = gb_hd_add(hd);
if (retval)
- goto error;
+ goto err_disable_arpc_in;
- for (i = 0; i < NUM_BULKS; ++i) {
- retval = es2_cport_in_enable(es2, &es2->cport_in[i]);
- if (retval)
- goto err_disable_cport_in;
- }
+ retval = es2_cport_in_enable(es2, &es2->cport_in);
+ if (retval)
+ goto err_hd_del;
return 0;
-err_disable_cport_in:
- for (--i; i >= 0; --i)
- es2_cport_in_disable(es2, &es2->cport_in[i]);
+err_hd_del:
gb_hd_del(hd);
+err_disable_arpc_in:
+ es2_arpc_in_disable(es2);
error:
es2_destroy(es2);
return retval;
}
+static void ap_disconnect(struct usb_interface *interface)
+{
+ struct es2_ap_dev *es2 = usb_get_intfdata(interface);
+
+ gb_hd_del(es2->hd);
+
+ es2_cport_in_disable(es2, &es2->cport_in);
+ es2_arpc_in_disable(es2);
+
+ es2_destroy(es2);
+}
+
static struct usb_driver es2_ap_driver = {
.name = "es2_ap_driver",
.probe = ap_probe,
.disconnect = ap_disconnect,
.id_table = id_table,
+ .soft_unbind = 1,
};
module_usb_driver(es2_ap_driver);
projects / cascardo / linux.git / blobdiff