Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / thunderbolt / ctl.h

diff --git a/kernel/drivers/thunderbolt/ctl.h b/kernel/drivers/thunderbolt/ctl.h
new file mode 100644 (file)
index 0000000..ba87d6e
--- /dev/null
+++ b/kernel/drivers/thunderbolt/ctl.h
@@ -0,0 +1,75 @@
+/*
+ * Thunderbolt Cactus Ridge driver - control channel and configuration commands
+ *
+ * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
+ */
+
+#ifndef _TB_CFG
+#define _TB_CFG
+
+#include "nhi.h"
+
+/* control channel */
+struct tb_ctl;
+
+typedef void (*hotplug_cb)(void *data, u64 route, u8 port, bool unplug);
+
+struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, hotplug_cb cb, void *cb_data);
+void tb_ctl_start(struct tb_ctl *ctl);
+void tb_ctl_stop(struct tb_ctl *ctl);
+void tb_ctl_free(struct tb_ctl *ctl);
+
+/* configuration commands */
+
+#define TB_CFG_DEFAULT_TIMEOUT 5000 /* msec */
+
+enum tb_cfg_space {
+       TB_CFG_HOPS = 0,
+       TB_CFG_PORT = 1,
+       TB_CFG_SWITCH = 2,
+       TB_CFG_COUNTERS = 3,
+};
+
+enum tb_cfg_error {
+       TB_CFG_ERROR_PORT_NOT_CONNECTED = 0,
+       TB_CFG_ERROR_INVALID_CONFIG_SPACE = 2,
+       TB_CFG_ERROR_NO_SUCH_PORT = 4,
+       TB_CFG_ERROR_ACK_PLUG_EVENT = 7, /* send as reply to TB_CFG_PKG_EVENT */
+       TB_CFG_ERROR_LOOP = 8,
+};
+
+struct tb_cfg_result {
+       u64 response_route;
+       u32 response_port; /*
+                           * If err = 1 then this is the port that send the
+                           * error.
+                           * If err = 0 and if this was a cfg_read/write then
+                           * this is the the upstream port of the responding
+                           * switch.
+                           * Otherwise the field is set to zero.
+                           */
+       int err; /* negative errors, 0 for success, 1 for tb errors */
+       enum tb_cfg_error tb_error; /* valid if err == 1 */
+};
+
+
+int tb_cfg_error(struct tb_ctl *ctl, u64 route, u32 port,
+                enum tb_cfg_error error);
+struct tb_cfg_result tb_cfg_reset(struct tb_ctl *ctl, u64 route,
+                                 int timeout_msec);
+struct tb_cfg_result tb_cfg_read_raw(struct tb_ctl *ctl, void *buffer,
+                                    u64 route, u32 port,
+                                    enum tb_cfg_space space, u32 offset,
+                                    u32 length, int timeout_msec);
+struct tb_cfg_result tb_cfg_write_raw(struct tb_ctl *ctl, void *buffer,
+                                     u64 route, u32 port,
+                                     enum tb_cfg_space space, u32 offset,
+                                     u32 length, int timeout_msec);
+int tb_cfg_read(struct tb_ctl *ctl, void *buffer, u64 route, u32 port,
+               enum tb_cfg_space space, u32 offset, u32 length);
+int tb_cfg_write(struct tb_ctl *ctl, void *buffer, u64 route, u32 port,
+                enum tb_cfg_space space, u32 offset, u32 length);
+int tb_cfg_get_upstream_port(struct tb_ctl *ctl, u64 route);
+
+
+#endif