rewrite the device subsystem interfaces (#48)

[lunaix-os.git] / lunaix-os / arch / generic / includes / asm-generic / isrm.h

diff --git a/lunaix-os/arch/generic/includes/asm-generic/isrm.h b/lunaix-os/arch/generic/includes/asm-generic/isrm.h
index 7e319b5a02f66859bf2700a63514bed479b9daf9..0bd4dda3f601c1df146f6a5d7b067b7931e7fbb6 100644 (file)
--- a/lunaix-os/arch/generic/includes/asm-generic/isrm.h
+++ b/lunaix-os/arch/generic/includes/asm-generic/isrm.h
@@ -13,9 +13,23 @@
 
 #include <lunaix/types.h>
 #include <lunaix/hart_state.h>
 
 #include <lunaix/types.h>
 #include <lunaix/hart_state.h>

+#include <lunaix/device.h>
+
+#include <hal/devtree.h>

 
 typedef void (*isr_cb)(const struct hart_state*);
 
 
 typedef void (*isr_cb)(const struct hart_state*);
 

+typedef struct {
+    ptr_t msi_addr;
+    reg_t msi_data;
+    int mapped_iv;
+} msi_vector_t;
+#define msi_addr(msiv)   ((msiv).msi_addr)
+#define msi_data(msiv)   ((msiv).msi_data)
+#define msi_vect(msiv)   ((msiv).mapped_iv)
+
+typedef void* msienv_t;
+

 void
 isrm_init();
 
 void
 isrm_init();
 


@@ -28,37 +42,59 @@ void
 isrm_ivfree(int iv);
 
 /**
 isrm_ivfree(int iv);
 
 /**

- * @brief Allocate an iv resource for os services
+ * @brief Begin MSI allocation for given device

  *
  * @param iv
  */
  *
  * @param iv
  */

-int
-isrm_ivosalloc(isr_cb handler);
+msienv_t
+isrm_msi_start(struct device* dev);

 
 /**
 
 /**

- * @brief Allocate an iv resource for external events
- *
- * @param iv
+ * @brief Query number of msi avaliable for the device

  */
 int
  */
 int

-isrm_ivexalloc(isr_cb handler);
+isrm_msi_avaliable(msienv_t msienv);

 
 /**
 
 /**

- * @brief Bind a given irq and associated handler to an iv
- *
- * @param iv iv allocated by system
+ * @brief Allocate a msi resource within defined msi resource list
+ *        for the device, indexed by `index`

  */
  */

-int
-isrm_bindirq(int irq, isr_cb irq_handler);
+msi_vector_t
+isrm_msi_alloc(msienv_t msienv, cpu_t cpu, int index, isr_cb handler);

 
 /**
 
 /**

- * @brief Bind given iv with it's associated handler
- *
- * @param iv
- * @param handler
+ * @brief Set the sideband information will be used for upcoming
+ *        allocations
+ */
+void
+isrm_msi_set_sideband(msienv_t msienv, ptr_t sideband);
+
+/**
+ * @brief Done MSI allocation

  */
 void
  */
 void

-isrm_bindiv(int iv, isr_cb handler);
+isrm_msi_done(msienv_t msienv);
+
+static inline must_inline msi_vector_t
+isrm_msi_alloc_simple(struct device* dev, cpu_t cpu, isr_cb handler)
+{   
+    msi_vector_t v;
+    msienv_t env;
+
+    env = isrm_msi_start(dev);
+    v = isrm_msi_alloc(env, cpu, 0, handler);
+    isrm_msi_done(env);
+
+    return v;
+}
+
+/**
+ * @brief Bind the iv according to given device tree node
+ *
+ * @param node
+ */
+int
+isrm_bind_dtn(struct dt_intr_node* node);

 
 /**
  * @brief Get the handler associated with the given iv
 
 /**
  * @brief Get the handler associated with the given iv


@@ -75,9 +111,6 @@ isrm_get_payload(const struct hart_state*);
 void
 isrm_set_payload(int iv, ptr_t);
 
 void
 isrm_set_payload(int iv, ptr_t);
 

-void
-isrm_irq_attach(int irq, int iv, cpu_t dest, u32_t flags);
-

 /**
  * @brief Notify end of interrupt event
  *
 /**
  * @brief Notify end of interrupt event
  *