#include <linux/usb.h>
#include <linux/kfifo.h>
#include <linux/debugfs.h>
+#include <linux/list.h>
#include <asm/unaligned.h>
#include "greybus.h"
+#include "greybus_trace.h"
#include "kernel_ver.h"
#include "connection.h"
-#include "greybus_trace.h"
+
+/* 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(0xffff, 0x0002) }, /* Made up number, delete once firmware is fixed to use real number */
{ USB_DEVICE(0x18d1, 0x1eaf) },
{ },
};
/* Number of bulk in and bulk out couple */
#define NUM_BULKS 7
+/* Expected number of bulk out endpoints */
+#define NUM_BULKS_OUT NUM_BULKS
+
+/* Expected number of bulk in endpoints (including ARPC endpoint) */
+#define NUM_BULKS_IN (NUM_BULKS + 1)
+
/*
* 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
*/
#define NUM_CPORT_OUT_URB (8 * NUM_BULKS)
-/* vendor request APB1 log */
-#define REQUEST_LOG 0x02
-
-/* vendor request to map a cport to bulk in and bulk out endpoints */
-#define REQUEST_EP_MAPPING 0x03
-
-/* vendor request to get the number of cports available */
-#define REQUEST_CPORT_COUNT 0x04
-
-/* vendor request to reset a cport state */
-#define REQUEST_RESET_CPORT 0x05
-
-/* vendor request to time the latency of messages on a given cport */
-#define REQUEST_LATENCY_TAG_EN 0x06
-#define REQUEST_LATENCY_TAG_DIS 0x07
+/*
+ * 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
* @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;
bool cport_out_urb_cancelled[NUM_CPORT_OUT_URB];
spinlock_t cport_out_urb_lock;
+ bool cdsi1_in_use;
+
int *cport_to_ep;
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;
};
/**
__u8 endpoint_out;
};
+/**
+ * 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 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)
{
return (struct es2_ap_dev *)&hd->hd_priv;
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);
+static int arpc_sync(struct es2_ap_dev *es2, u8 type, void *payload,
+ size_t size, int *result, unsigned int timeout);
/* Get the endpoints pair mapped to the cport */
static int cport_to_ep_pair(struct es2_ap_dev *es2, u16 cport_id)
retval = usb_control_msg(es2->usb_dev,
usb_sndctrlpipe(es2->usb_dev, 0),
- REQUEST_EP_MAPPING,
+ GB_APB_REQUEST_EP_MAPPING,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
0x00, 0x00,
(char *)cport_to_ep,
}
#endif
+static int output_sync(struct es2_ap_dev *es2, void *req, u16 size, u8 cmd)
+{
+ struct usb_device *udev = es2->usb_dev;
+ u8 *data;
+ int retval;
+
+ data = kmalloc(size, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ memcpy(data, req, size);
+
+ retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ cmd,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE,
+ 0, 0, data, size, ES2_TIMEOUT);
+ if (retval < 0)
+ dev_err(&udev->dev, "%s: return error %d\n", __func__, retval);
+ else
+ retval = 0;
+
+ kfree(data);
+ return retval;
+}
+
+static void ap_urb_complete(struct urb *urb)
+{
+ struct usb_ctrlrequest *dr = urb->context;
+
+ kfree(dr);
+ usb_free_urb(urb);
+}
+
+static int output_async(struct es2_ap_dev *es2, void *req, u16 size, u8 cmd)
+{
+ struct usb_device *udev = es2->usb_dev;
+ struct urb *urb;
+ struct usb_ctrlrequest *dr;
+ u8 *buf;
+ int retval;
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb)
+ return -ENOMEM;
+
+ dr = kmalloc(sizeof(*dr) + size, GFP_ATOMIC);
+ if (!dr) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ buf = (u8 *)dr + sizeof(*dr);
+ memcpy(buf, req, size);
+
+ dr->bRequest = cmd;
+ dr->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE;
+ dr->wValue = 0;
+ dr->wIndex = 0;
+ dr->wLength = cpu_to_le16(size);
+
+ usb_fill_control_urb(urb, udev, usb_sndctrlpipe(udev, 0),
+ (unsigned char *)dr, buf, size,
+ ap_urb_complete, dr);
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval) {
+ usb_free_urb(urb);
+ kfree(dr);
+ }
+ return retval;
+}
+
+static int output(struct gb_host_device *hd, void *req, u16 size, u8 cmd,
+ bool async)
+{
+ struct es2_ap_dev *es2 = hd_to_es2(hd);
+
+ if (async)
+ return output_async(es2, req, size, cmd);
+
+ return output_sync(es2, req, size, cmd);
+}
+
static int es2_cport_in_enable(struct es2_ap_dev *es2,
struct es2_cport_in *cport_in)
{
}
}
+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;
* Crap, pool is empty, complain to the syslog and go allocate one
* dynamically as we have to succeed.
*/
- dev_err(&es2->usb_dev->dev,
+ dev_dbg(&es2->usb_dev->dev,
"No free CPort OUT urbs, having to dynamically allocate one!\n");
return usb_alloc_urb(0, gfp_mask);
}
* the target CPort id before filling it in.
*/
if (!cport_id_valid(hd, cport_id)) {
- dev_err(&udev->dev, "invalid destination cport 0x%02x\n",
- cport_id);
+ dev_err(&udev->dev, "invalid cport %u\n", cport_id);
return -EINVAL;
}
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);
{
struct es2_ap_dev *es2 = hd_to_es2(hd);
struct usb_device *udev = es2->usb_dev;
+ struct arpc_cport_reset req;
int retval;
+ int result;
- retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
- REQUEST_RESET_CPORT,
- USB_DIR_OUT | USB_TYPE_VENDOR |
- USB_RECIP_INTERFACE, 0, cport_id,
- NULL, 0, ES2_TIMEOUT);
- if (retval < 0) {
- dev_err(&udev->dev, "failed to reset cport %hu: %d\n", cport_id,
- retval);
- return retval;
+ switch (cport_id) {
+ case GB_SVC_CPORT_ID:
+ case ES2_CPORT_CDSI0:
+ case ES2_CPORT_CDSI1:
+ return 0;
}
- return 0;
+ req.cport_id = cpu_to_le16(cport_id);
+ retval = arpc_sync(es2, ARPC_CPORT_RESET, &req, sizeof(req),
+ &result, ES2_TIMEOUT);
+ if (retval == -EREMOTEIO) {
+ dev_err(&udev->dev, "failed to reset cport %u: %d\n", cport_id,
+ result);
+ }
+
+ return retval;
}
-static int cport_enable(struct gb_host_device *hd, u16 cport_id)
+static int es2_cport_allocate(struct gb_host_device *hd, int cport_id,
+ unsigned long flags)
{
- int retval;
+ 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 (cport_id != GB_SVC_CPORT_ID) {
- retval = cport_reset(hd, cport_id);
- if (retval)
- return retval;
+ 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;
+ struct gb_apb_request_cport_flags *req;
+ int ret;
+
+ req = kzalloc(sizeof(*req), GFP_KERNEL);
+ if (!req)
+ return -ENOMEM;
+
+ if (flags & GB_CONNECTION_FLAG_CONTROL)
+ req->flags |= GB_APB_CPORT_FLAG_CONTROL;
+ if (flags & GB_CONNECTION_FLAG_HIGH_PRIO)
+ req->flags |= GB_APB_CPORT_FLAG_HIGH_PRIO;
+
+ dev_dbg(&hd->dev, "%s - cport = %u, flags = %02x\n", __func__,
+ cport_id, req->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_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 cport_disable(struct gb_host_device *hd, u16 cport_id)
+{
+ int retval;
+
+ retval = cport_reset(hd, cport_id);
+ if (retval)
+ return retval;
+
return 0;
}
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 destination cport 0x%02x\n",
- cport_id);
- return -EINVAL;
- }
-
retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
- REQUEST_LATENCY_TAG_EN,
+ GB_APB_REQUEST_LATENCY_TAG_EN,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_INTERFACE, cport_id, 0, NULL,
0, ES2_TIMEOUT);
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 destination cport 0x%02x\n",
- cport_id);
- return -EINVAL;
- }
-
retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
- REQUEST_LATENCY_TAG_DIS,
+ GB_APB_REQUEST_LATENCY_TAG_DIS,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_INTERFACE, cport_id, 0, NULL,
0, ES2_TIMEOUT);
return retval;
}
+static int cport_features_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_CPORT_FEAT_EN,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, cport_id, 0, NULL,
+ 0, ES2_TIMEOUT);
+ if (retval < 0)
+ dev_err(&udev->dev, "Cannot enable CPort features for cport %u: %d\n",
+ cport_id, retval);
+ return retval;
+}
+
+static int cport_features_disable(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_CPORT_FEAT_DIS,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, cport_id, 0, NULL,
+ 0, ES2_TIMEOUT);
+ if (retval < 0)
+ dev_err(&udev->dev,
+ "Cannot disable CPort features for cport %u: %d\n",
+ cport_id, retval);
+ return retval;
+}
+
+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),
+ REQUEST_TIMESYNC_ENABLE,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, 0, 0, request,
+ sizeof(*request), ES2_TIMEOUT);
+ if (retval < 0)
+ dev_err(&udev->dev, "Cannot enable timesync %d\n", retval);
+
+ kfree(request);
+ return retval;
+}
+
+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),
+ REQUEST_TIMESYNC_DISABLE,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, 0, 0, NULL,
+ 0, ES2_TIMEOUT);
+ if (retval < 0)
+ 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),
+ REQUEST_TIMESYNC_AUTHORITATIVE,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, 0, 0, request,
+ sizeof(*request), ES2_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),
+ REQUEST_TIMESYNC_GET_LAST_EVENT,
+ USB_DIR_IN | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE, 0, 0, response_frame_time,
+ sizeof(*response_frame_time), ES2_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,
+ .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_disable = cport_disable,
+ .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,
+ .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 *cport_to_ep;
int bulk_in;
int i;
es2->cport_out_urb_busy[i] = false; /* just to be anal */
}
+ for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
+ struct urb *urb = es2->arpc_urb[i];
+
+ if (!urb)
+ break;
+ usb_free_urb(urb);
+ kfree(es2->arpc_buffer[i]);
+ es2->arpc_buffer[i] = NULL;
+ }
+
for (bulk_in = 0; bulk_in < NUM_BULKS; bulk_in++) {
struct es2_cport_in *cport_in = &es2->cport_in[bulk_in];
}
}
- udev = es2->usb_dev;
- cport_to_ep = es2->cport_to_ep;
- gb_hd_remove(es2->hd);
+ kfree(es2->cport_to_ep);
- kfree(cport_to_ep);
- usb_put_dev(udev);
-}
+ /* 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);
-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]);
+ udev = es2->usb_dev;
+ gb_hd_put(es2->hd);
- es2_destroy(es2);
+ usb_put_dev(udev);
}
static void cport_in_callback(struct urb *urb)
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 {
- dev_err(dev, "invalid cport id 0x%02x received\n", cport_id);
+ dev_err(dev, "invalid cport id %u received\n", cport_id);
}
exit:
/* put our urb back in the request pool */
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->req)
+ 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(&es2->arpcs, &rpc->list);
+}
+
+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),
+ APBA_REQUEST_ARPC_RUN,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_INTERFACE,
+ 0, 0,
+ rpc->req, le16_to_cpu(rpc->req->size),
+ ES2_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;
+
+ 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;
+ }
+
+ *result = rpc->resp->result;
+ if (*result)
+ retval = -EREMOTEIO;
+ 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: %d\n",
+ 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)
{
do {
retval = usb_control_msg(es2->usb_dev,
usb_rcvctrlpipe(es2->usb_dev, 0),
- REQUEST_LOG,
+ GB_APB_REQUEST_LOG,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
0x00, 0x00,
buf,
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);
}
int retval;
__le16 *cport_count;
- cport_count = kmalloc(sizeof(*cport_count), GFP_KERNEL);
+ cport_count = kzalloc(sizeof(*cport_count), GFP_KERNEL);
if (!cport_count)
return -ENOMEM;
retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
- REQUEST_CPORT_COUNT,
+ GB_APB_REQUEST_CPORT_COUNT,
USB_DIR_IN | USB_TYPE_VENDOR |
USB_RECIP_INTERFACE, 0, 0, cport_count,
sizeof(*cport_count), ES2_TIMEOUT);
- if (retval < 0) {
+ if (retval != sizeof(*cport_count)) {
dev_err(&udev->dev, "Cannot retrieve CPort count: %d\n",
retval);
+
+ if (retval >= 0)
+ retval = -EIO;
+
goto out;
}
struct usb_endpoint_descriptor *endpoint;
int bulk_in = 0;
int bulk_out = 0;
- int retval = -ENOMEM;
+ int retval;
int i;
int num_cports;
INIT_KFIFO(es2->apb_log_fifo);
usb_set_intfdata(interface, es2);
+ /*
+ * 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;
+
es2->cport_to_ep = kcalloc(hd->num_cports, sizeof(*es2->cport_to_ep),
GFP_KERNEL);
if (!es2->cport_to_ep) {
endpoint = &iface_desc->endpoint[i].desc;
if (usb_endpoint_is_bulk_in(endpoint)) {
- es2->cport_in[bulk_in++].endpoint =
- endpoint->bEndpointAddress;
+ if (bulk_in < NUM_BULKS)
+ es2->cport_in[bulk_in].endpoint =
+ endpoint->bEndpointAddress;
+ else
+ es2->arpc_endpoint_in =
+ endpoint->bEndpointAddress;
+ bulk_in++;
} 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 %x\n",
+ "Unknown endpoint type found, address 0x%02x\n",
endpoint->bEndpointAddress);
}
}
- if (bulk_in != NUM_BULKS || bulk_out != NUM_BULKS) {
+ if (bulk_in != NUM_BULKS_IN || bulk_out != NUM_BULKS_OUT) {
dev_err(&udev->dev, "Not enough endpoints found in device, aborting!\n");
+ retval = -ENODEV;
goto error;
}
u8 *buffer;
urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb)
+ if (!urb) {
+ retval = -ENOMEM;
goto error;
+ }
buffer = kmalloc(ES2_GBUF_MSG_SIZE_MAX, GFP_KERNEL);
- if (!buffer)
+ if (!buffer) {
+ retval = -ENOMEM;
goto error;
+ }
usb_fill_bulk_urb(urb, udev,
usb_rcvbulkpipe(udev,
}
}
+ /* 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;
+ }
+ 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_urb[i] = urb;
+ es2->arpc_buffer[i] = buffer;
+ }
+
/* Allocate urbs for our CPort OUT messages */
for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
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 err_disable_arpc_in;
+
for (i = 0; i < NUM_BULKS; ++i) {
retval = es2_cport_in_enable(es2, &es2->cport_in[i]);
if (retval)
err_disable_cport_in:
for (--i; i >= 0; --i)
es2_cport_in_disable(es2, &es2->cport_in[i]);
+ 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);
+ int i;
+
+ gb_hd_del(es2->hd);
+
+ for (i = 0; i < NUM_BULKS; ++i)
+ es2_cport_in_disable(es2, &es2->cport_in[i]);
+ 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