Changes in uspace/lib/drv/generic/remote_usb.c [9d58539:0918382f] in mainline

File:

• uspace/lib/drv/generic/remote_usb.c (modified) (7 diffs)

uspace/lib/drv/generic/remote_usb.c

@@ -35 +35 @@
 
 #include <async.h>
+#include <macros.h>
 #include <errno.h>
+#include <devman.h>
 
 #include "usb_iface.h"
 #include "ddf/driver.h"
 
+
+usb_dev_session_t *usb_dev_connect(devman_handle_t handle)
+{
+        return devman_device_connect(EXCHANGE_PARALLEL, handle, IPC_FLAG_BLOCKING);
+}
+
+usb_dev_session_t *usb_dev_connect_to_self(ddf_dev_t *dev)
+{
+        // TODO All usb requests are atomic so this is safe,
+        // it will need to change once USING EXCHANGE PARALLEL is safe with
+        // devman_parent_device_connect
+        return devman_parent_device_connect(EXCHANGE_ATOMIC,
+            ddf_dev_get_handle(dev), IPC_FLAG_BLOCKING);
+}
+
+void usb_dev_disconnect(usb_dev_session_t *sess)
+{
+        if (sess)
+                async_hangup(sess);
+}
+
 typedef enum {
-        IPC_M_USB_GET_MY_ADDRESS,
         IPC_M_USB_GET_MY_INTERFACE,
-        IPC_M_USB_GET_HOST_CONTROLLER_HANDLE,
+        IPC_M_USB_GET_MY_DEVICE_HANDLE,
+        IPC_M_USB_RESERVE_DEFAULT_ADDRESS,
+        IPC_M_USB_RELEASE_DEFAULT_ADDRESS,
+        IPC_M_USB_DEVICE_ENUMERATE,
+        IPC_M_USB_DEVICE_REMOVE,
+        IPC_M_USB_REGISTER_ENDPOINT,
+        IPC_M_USB_UNREGISTER_ENDPOINT,
+        IPC_M_USB_READ,
+        IPC_M_USB_WRITE,
 } usb_iface_funcs_t;
 
-/** Tell USB address assigned to device.
- * @param exch Vaid IPC exchange
- * @param address Pointer to address storage place.
- * @return Error code.
- *
- * Exch param is an open communication to device implementing usb_iface.
- */
-int usb_get_my_address(async_exch_t *exch, usb_address_t *address)
-{
-        if (!exch)
-                return EINVAL;
-        sysarg_t addr;
-        const int ret = async_req_1_1(exch, DEV_IFACE_ID(USB_DEV_IFACE),
-            IPC_M_USB_GET_MY_ADDRESS, &addr);
-
-        if (ret == EOK && address != NULL)
-                *address = (usb_address_t) addr;
-        return ret;
-}
-/*----------------------------------------------------------------------------*/
 /** Tell interface number given device can use.
  * @param[in] exch IPC communication exchange
@@ -75 +85 @@
 {
         if (!exch)
-                return EINVAL;
+                return EBADMEM;
         sysarg_t iface_no;
         const int ret = async_req_1_1(exch, DEV_IFACE_ID(USB_DEV_IFACE),
@@ -83 +93 @@
         return ret;
 }
-/*----------------------------------------------------------------------------*/
-/** Tell devman handle of device host controller.
+
+/** Tell devman handle of the usb device function.
  * @param[in] exch IPC communication exchange
- * @param[out] hc_handle devman handle of the HC used by the target device.
+ * @param[out] handle devman handle of the HC used by the target device.
  * @return Error code.
  */
-int usb_get_hc_handle(async_exch_t *exch, devman_handle_t *hc_handle)
-{
-        if (!exch)
-                return EINVAL;
-        devman_handle_t h;
+int usb_get_my_device_handle(async_exch_t *exch, devman_handle_t *handle)
+{
+        devman_handle_t h = 0;
         const int ret = async_req_1_1(exch, DEV_IFACE_ID(USB_DEV_IFACE),
-            IPC_M_USB_GET_HOST_CONTROLLER_HANDLE, &h);
-        if (ret == EOK && hc_handle)
-                *hc_handle = (devman_handle_t)h;
+            IPC_M_USB_GET_MY_DEVICE_HANDLE, &h);
+        if (ret == EOK && handle)
+                *handle = (devman_handle_t)h;
         return ret;
 }
 
-
-static void remote_usb_get_my_address(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+/** Reserve default USB address.
+ * @param[in] exch IPC communication exchange
+ * @param[in] speed Communication speed of the newly attached device
+ * @return Error code.
+ */
+int usb_reserve_default_address(async_exch_t *exch, usb_speed_t speed)
+{
+        if (!exch)
+                return EBADMEM;
+        return async_req_2_0(exch, DEV_IFACE_ID(USB_DEV_IFACE),
+            IPC_M_USB_RESERVE_DEFAULT_ADDRESS, speed);
+}
+
+/** Release default USB address.
+ * @param[in] exch IPC communication exchange
+ * @return Error code.
+ */
+int usb_release_default_address(async_exch_t *exch)
+{
+        if (!exch)
+                return EBADMEM;
+        return async_req_1_0(exch, DEV_IFACE_ID(USB_DEV_IFACE),
+            IPC_M_USB_RELEASE_DEFAULT_ADDRESS);
+}
+
+/** Trigger USB device enumeration
+ * @param[in] exch IPC communication exchange
+ * @param[out] handle Identifier of the newly added device (if successful)
+ * @return Error code.
+ */
+int usb_device_enumerate(async_exch_t *exch, unsigned port)
+{
+        if (!exch)
+                return EBADMEM;
+        const int ret = async_req_2_0(exch, DEV_IFACE_ID(USB_DEV_IFACE),
+            IPC_M_USB_DEVICE_ENUMERATE, port);
+        return ret;
+}
+
+/** Trigger USB device enumeration
+ * @param[in] exch IPC communication exchange
+ * @param[in] handle Identifier of the device
+ * @return Error code.
+ */
+int usb_device_remove(async_exch_t *exch, unsigned port)
+{
+        if (!exch)
+                return EBADMEM;
+        return async_req_2_0(exch, DEV_IFACE_ID(USB_DEV_IFACE),
+            IPC_M_USB_DEVICE_REMOVE, port);
+}
+
+int usb_register_endpoint(async_exch_t *exch, usb_endpoint_t endpoint,
+    usb_transfer_type_t type, usb_direction_t direction,
+    size_t mps, unsigned interval)
+{
+        if (!exch)
+                return EBADMEM;
+#define _PACK2(high, low) (((high & 0xffff) << 16) | (low & 0xffff))
+
+        return async_req_4_0(exch, DEV_IFACE_ID(USB_DEV_IFACE),
+            IPC_M_USB_REGISTER_ENDPOINT, endpoint,
+            _PACK2(type, direction), _PACK2(mps, interval));
+
+#undef _PACK2
+}
+
+int usb_unregister_endpoint(async_exch_t *exch, usb_endpoint_t endpoint,
+    usb_direction_t direction)
+{
+        if (!exch)
+                return EBADMEM;
+        return async_req_3_0(exch, DEV_IFACE_ID(USB_DEV_IFACE),
+            IPC_M_USB_UNREGISTER_ENDPOINT, endpoint, direction);
+}
+
+int usb_read(async_exch_t *exch, usb_endpoint_t endpoint, uint64_t setup,
+    void *data, size_t size, size_t *rec_size)
+{
+        if (!exch)
+                return EBADMEM;
+
+        if (size == 0 && setup == 0)
+                return EOK;
+
+        /* Make call identifying target USB device and type of transfer. */
+        aid_t opening_request = async_send_4(exch,
+            DEV_IFACE_ID(USB_DEV_IFACE), IPC_M_USB_READ, endpoint,
+            (setup & UINT32_MAX), (setup >> 32), NULL);
+
+        if (opening_request == 0) {
+                return ENOMEM;
+        }
+
+        /* Retrieve the data. */
+        ipc_call_t data_request_call;
+        aid_t data_request =
+            async_data_read(exch, data, size, &data_request_call);
+
+        if (data_request == 0) {
+                // FIXME: How to let the other side know that we want to abort?
+                async_forget(opening_request);
+                return ENOMEM;
+        }
+
+        /* Wait for the answer. */
+        sysarg_t data_request_rc;
+        sysarg_t opening_request_rc;
+        async_wait_for(data_request, &data_request_rc);
+        async_wait_for(opening_request, &opening_request_rc);
+
+        if (data_request_rc != EOK) {
+                /* Prefer the return code of the opening request. */
+                if (opening_request_rc != EOK) {
+                        return (int) opening_request_rc;
+                } else {
+                        return (int) data_request_rc;
+                }
+        }
+        if (opening_request_rc != EOK) {
+                return (int) opening_request_rc;
+        }
+
+        *rec_size = IPC_GET_ARG2(data_request_call);
+        return EOK;
+}
+
+int usb_write(async_exch_t *exch, usb_endpoint_t endpoint, uint64_t setup,
+    const void *data, size_t size)
+{
+        if (!exch)
+                return EBADMEM;
+
+        if (size == 0 && setup == 0)
+                return EOK;
+
+        aid_t opening_request = async_send_5(exch,
+            DEV_IFACE_ID(USB_DEV_IFACE), IPC_M_USB_WRITE, endpoint, size,
+            (setup & UINT32_MAX), (setup >> 32), NULL);
+
+        if (opening_request == 0) {
+                return ENOMEM;
+        }
+
+        /* Send the data if any. */
+        if (size > 0) {
+                const int ret = async_data_write_start(exch, data, size);
+                if (ret != EOK) {
+                        async_forget(opening_request);
+                        return ret;
+                }
+        }
+
+        /* Wait for the answer. */
+        sysarg_t opening_request_rc;
+        async_wait_for(opening_request, &opening_request_rc);
+
+        return (int) opening_request_rc;
+}
+
 static void remote_usb_get_my_interface(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
-static void remote_usb_get_hc_handle(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_get_my_device_handle(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_reserve_default_address(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_release_default_address(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_device_enumerate(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_device_remove(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_register_endpoint(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_unregister_endpoint(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_read(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call);
+static void remote_usb_write(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call);
 
 /** Remote USB interface operations. */
 static remote_iface_func_ptr_t remote_usb_iface_ops [] = {
-        [IPC_M_USB_GET_MY_ADDRESS] = remote_usb_get_my_address,
         [IPC_M_USB_GET_MY_INTERFACE] = remote_usb_get_my_interface,
-        [IPC_M_USB_GET_HOST_CONTROLLER_HANDLE] = remote_usb_get_hc_handle,
+        [IPC_M_USB_GET_MY_DEVICE_HANDLE] = remote_usb_get_my_device_handle,
+        [IPC_M_USB_RESERVE_DEFAULT_ADDRESS] = remote_usb_reserve_default_address,
+        [IPC_M_USB_RELEASE_DEFAULT_ADDRESS] = remote_usb_release_default_address,
+        [IPC_M_USB_DEVICE_ENUMERATE] = remote_usb_device_enumerate,
+        [IPC_M_USB_DEVICE_REMOVE] = remote_usb_device_remove,
+        [IPC_M_USB_REGISTER_ENDPOINT] = remote_usb_register_endpoint,
+        [IPC_M_USB_UNREGISTER_ENDPOINT] = remote_usb_unregister_endpoint,
+        [IPC_M_USB_READ] = remote_usb_read,
+        [IPC_M_USB_WRITE] = remote_usb_write,
 };
 
@@ -116 +297 @@
  */
 remote_iface_t remote_usb_iface = {
-        .method_count = sizeof(remote_usb_iface_ops) /
-            sizeof(remote_usb_iface_ops[0]),
-        .methods = remote_usb_iface_ops
+        .method_count = ARRAY_SIZE(remote_usb_iface_ops),
+        .methods = remote_usb_iface_ops,
 };
 
-/*----------------------------------------------------------------------------*/
-void remote_usb_get_my_address(ddf_fun_t *fun, void *iface,
-    ipc_callid_t callid, ipc_call_t *call)
-{
-        const usb_iface_t *usb_iface = (usb_iface_t *) iface;
-
-        if (usb_iface->get_my_address == NULL) {
-                async_answer_0(callid, ENOTSUP);
-                return;
-        }
-
-        usb_address_t address;
-        const int ret = usb_iface->get_my_address(fun, &address);
-        if (ret != EOK) {
-                async_answer_0(callid, ret);
-        } else {
-                async_answer_1(callid, EOK, address);
-        }
-}
-/*----------------------------------------------------------------------------*/
 void remote_usb_get_my_interface(ddf_fun_t *fun, void *iface,
     ipc_callid_t callid, ipc_call_t *call)
@@ -159 +319 @@
         }
 }
-/*----------------------------------------------------------------------------*/
-void remote_usb_get_hc_handle(ddf_fun_t *fun, void *iface,
+
+void remote_usb_get_my_device_handle(ddf_fun_t *fun, void *iface,
     ipc_callid_t callid, ipc_call_t *call)
 {
         const usb_iface_t *usb_iface = (usb_iface_t *) iface;
 
-        if (usb_iface->get_hc_handle == NULL) {
+        if (usb_iface->get_my_device_handle == NULL) {
                 async_answer_0(callid, ENOTSUP);
                 return;
@@ -171 +331 @@
 
         devman_handle_t handle;
-        const int ret = usb_iface->get_hc_handle(fun, &handle);
+        const int ret = usb_iface->get_my_device_handle(fun, &handle);
         if (ret != EOK) {
                 async_answer_0(callid, ret);
@@ -178 +338 @@
         async_answer_1(callid, EOK, (sysarg_t) handle);
 }
+
+void remote_usb_reserve_default_address(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+        const usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+        if (usb_iface->reserve_default_address == NULL) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+
+        usb_speed_t speed = DEV_IPC_GET_ARG1(*call);
+        const int ret = usb_iface->reserve_default_address(fun, speed);
+        async_answer_0(callid, ret);
+}
+
+void remote_usb_release_default_address(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+        const usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+        if (usb_iface->release_default_address == NULL) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+
+        const int ret = usb_iface->release_default_address(fun);
+        async_answer_0(callid, ret);
+}
+
+static void remote_usb_device_enumerate(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+        const usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+        if (usb_iface->device_enumerate == NULL) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+
+        const unsigned port = DEV_IPC_GET_ARG1(*call);
+        const int ret = usb_iface->device_enumerate(fun, port);
+        async_answer_0(callid, ret);
+}
+
+static void remote_usb_device_remove(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+        const usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+        if (usb_iface->device_remove == NULL) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+
+        const unsigned port = DEV_IPC_GET_ARG1(*call);
+        const int ret = usb_iface->device_remove(fun, port);
+        async_answer_0(callid, ret);
+}
+
+static void remote_usb_register_endpoint(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+        usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+        if (!usb_iface->register_endpoint) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+
+#define _INIT_FROM_HIGH_DATA2(type, var, arg_no) \
+        type var = (type) (DEV_IPC_GET_ARG##arg_no(*call) >> 16)
+#define _INIT_FROM_LOW_DATA2(type, var, arg_no) \
+        type var = (type) (DEV_IPC_GET_ARG##arg_no(*call) & 0xffff)
+
+        const usb_endpoint_t endpoint = DEV_IPC_GET_ARG1(*call);
+
+        _INIT_FROM_HIGH_DATA2(usb_transfer_type_t, transfer_type, 2);
+        _INIT_FROM_LOW_DATA2(usb_direction_t, direction, 2);
+
+        _INIT_FROM_HIGH_DATA2(size_t, max_packet_size, 3);
+        _INIT_FROM_LOW_DATA2(unsigned int, interval, 3);
+
+#undef _INIT_FROM_HIGH_DATA2
+#undef _INIT_FROM_LOW_DATA2
+
+        const int ret = usb_iface->register_endpoint(fun, endpoint,
+            transfer_type, direction, max_packet_size, interval);
+
+        async_answer_0(callid, ret);
+}
+
+static void remote_usb_unregister_endpoint(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+        usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+        if (!usb_iface->unregister_endpoint) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+
+        usb_endpoint_t endpoint = (usb_endpoint_t) DEV_IPC_GET_ARG1(*call);
+        usb_direction_t direction = (usb_direction_t) DEV_IPC_GET_ARG2(*call);
+
+        int rc = usb_iface->unregister_endpoint(fun, endpoint, direction);
+
+        async_answer_0(callid, rc);
+}
+
+typedef struct {
+        ipc_callid_t caller;
+        ipc_callid_t data_caller;
+        void *buffer;
+} async_transaction_t;
+
+static void async_transaction_destroy(async_transaction_t *trans)
+{
+        if (trans == NULL) {
+                return;
+        }
+        if (trans->buffer != NULL) {
+                free(trans->buffer);
+        }
+
+        free(trans);
+}
+
+static async_transaction_t *async_transaction_create(ipc_callid_t caller)
+{
+        async_transaction_t *trans = malloc(sizeof(async_transaction_t));
+        if (trans == NULL) {
+                return NULL;
+        }
+
+        trans->caller = caller;
+        trans->data_caller = 0;
+        trans->buffer = NULL;
+
+        return trans;
+}
+
+static void callback_out(int outcome, void *arg)
+{
+        async_transaction_t *trans = arg;
+
+        async_answer_0(trans->caller, outcome);
+
+        async_transaction_destroy(trans);
+}
+
+static void callback_in(int outcome, size_t actual_size, void *arg)
+{
+        async_transaction_t *trans = (async_transaction_t *)arg;
+
+        if (outcome != EOK) {
+                async_answer_0(trans->caller, outcome);
+                if (trans->data_caller) {
+                        async_answer_0(trans->data_caller, EINTR);
+                }
+                async_transaction_destroy(trans);
+                return;
+        }
+
+        if (trans->data_caller) {
+                async_data_read_finalize(trans->data_caller,
+                    trans->buffer, actual_size);
+        }
+
+        async_answer_0(trans->caller, EOK);
+
+        async_transaction_destroy(trans);
+}
+
+void remote_usb_read(
+    ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+        assert(fun);
+        assert(iface);
+        assert(call);
+
+        const usb_iface_t *usb_iface = iface;
+
+        if (!usb_iface->read) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+
+        const usb_endpoint_t ep = DEV_IPC_GET_ARG1(*call);
+        const uint64_t setup =
+            ((uint64_t)DEV_IPC_GET_ARG2(*call)) |
+            (((uint64_t)DEV_IPC_GET_ARG3(*call)) << 32);
+
+        async_transaction_t *trans = async_transaction_create(callid);
+        if (trans == NULL) {
+                async_answer_0(callid, ENOMEM);
+                return;
+        }
+
+        size_t size = 0;
+        if (!async_data_read_receive(&trans->data_caller, &size)) {
+                async_answer_0(callid, EPARTY);
+                return;
+        }
+
+        trans->buffer = malloc(size);
+        if (trans->buffer == NULL) {
+                async_answer_0(trans->data_caller, ENOMEM);
+                async_answer_0(callid, ENOMEM);
+                async_transaction_destroy(trans);
+        }
+
+        const int rc = usb_iface->read(
+            fun, ep, setup, trans->buffer, size, callback_in, trans);
+
+        if (rc != EOK) {
+                async_answer_0(trans->data_caller, rc);
+                async_answer_0(callid, rc);
+                async_transaction_destroy(trans);
+        }
+}
+
+void remote_usb_write(
+    ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+        assert(fun);
+        assert(iface);
+        assert(call);
+
+        const usb_iface_t *usb_iface = iface;
+
+        if (!usb_iface->write) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+
+        const usb_endpoint_t ep = DEV_IPC_GET_ARG1(*call);
+        const size_t data_buffer_len = DEV_IPC_GET_ARG2(*call);
+        const uint64_t setup =
+            ((uint64_t)DEV_IPC_GET_ARG3(*call)) |
+            (((uint64_t)DEV_IPC_GET_ARG4(*call)) << 32);
+
+        async_transaction_t *trans = async_transaction_create(callid);
+        if (trans == NULL) {
+                async_answer_0(callid, ENOMEM);
+                return;
+        }
+
+        size_t size = 0;
+        if (data_buffer_len > 0) {
+                const int rc = async_data_write_accept(&trans->buffer, false,
+                    1, data_buffer_len, 0, &size);
+
+                if (rc != EOK) {
+                        async_answer_0(callid, rc);
+                        async_transaction_destroy(trans);
+                        return;
+                }
+        }
+
+        const int rc = usb_iface->write(
+            fun, ep, setup, trans->buffer, size, callback_out, trans);
+
+        if (rc != EOK) {
+                async_answer_0(callid, rc);
+                async_transaction_destroy(trans);
+        }
+}
 /**
  * @}