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-rw-r--r--bsp/drivers/clic/clic_driver.c163
-rw-r--r--bsp/drivers/clic/clic_driver.h44
2 files changed, 0 insertions, 207 deletions
diff --git a/bsp/drivers/clic/clic_driver.c b/bsp/drivers/clic/clic_driver.c
deleted file mode 100644
index 136ccee..0000000
--- a/bsp/drivers/clic/clic_driver.c
+++ /dev/null
@@ -1,163 +0,0 @@
-// See LICENSE for license details.
-
-#include "sifive/devices/clic.h"
-#include "clic/clic_driver.h"
-#include "platform.h"
-#include "encoding.h"
-#include <string.h>
-
-
-void volatile_memzero(uint8_t * base, unsigned int size) {
- volatile uint8_t * ptr;
- for (ptr = base; ptr < (base + size); ptr++){
- *ptr = 0;
- }
-}
-
-// Note that there are no assertions or bounds checking on these
-// parameter values.
-void clic_init (
- clic_instance_t * this_clic,
- uintptr_t hart_addr,
- interrupt_function_ptr_t* vect_table,
- interrupt_function_ptr_t default_handler,
- uint32_t num_irq,
- uint32_t num_config_bits
- )
-{
- this_clic->hart_addr= hart_addr;
- this_clic->vect_table= vect_table;
- this_clic->num_config_bits= num_config_bits;
-
- //initialize vector table
- for(int i=0;i<num_irq;i++) {
- this_clic->vect_table[i] = default_handler;
- }
-
- //set base vectors
- write_csr(mtvt, vect_table);
-
-
- //clear all interrupt enables and pending
- volatile_memzero((uint8_t*)(this_clic->hart_addr+CLIC_INTIE), num_irq);
- volatile_memzero((uint8_t*)(this_clic->hart_addr+CLIC_INTIP), num_irq);
-
- //clear nlbits and nvbits; all interrupts trap to level 15
- *(volatile uint8_t*)(this_clic->hart_addr+CLIC_CFG)=0;
-
-}
-
-void clic_install_handler (clic_instance_t * this_clic, uint32_t source, interrupt_function_ptr_t handler) {
- this_clic->vect_table[source] = handler;
-}
-
-void clic_enable_interrupt (clic_instance_t * this_clic, uint32_t source) {
- *(volatile uint8_t*)(this_clic->hart_addr+CLIC_INTIE+source) = 1;
-}
-
-void clic_disable_interrupt (clic_instance_t * this_clic, uint32_t source){
- *(volatile uint8_t*)(this_clic->hart_addr+CLIC_INTIE+source) = 0;
-}
-
-void clic_set_pending(clic_instance_t * this_clic, uint32_t source){
- *(volatile uint8_t*)(this_clic->hart_addr+CLIC_INTIP+source) = 1;
-}
-
-void clic_clear_pending(clic_instance_t * this_clic, uint32_t source){
- *(volatile uint8_t*)(this_clic->hart_addr+CLIC_INTIP+source) = 0;
-}
-
-void clic_set_intcfg (clic_instance_t * this_clic, uint32_t source, uint32_t intcfg){
- *(volatile uint8_t*)(this_clic->hart_addr+CLIC_INTCFG+source) = intcfg;
-}
-
-uint8_t clic_get_intcfg (clic_instance_t * this_clic, uint32_t source){
- return *(volatile uint8_t*)(this_clic->hart_addr+CLIC_INTCFG+source);
-}
-
-void clic_set_cliccfg (clic_instance_t * this_clic, uint32_t cfg){
- *(volatile uint8_t*)(this_clic->hart_addr+CLIC_CFG) = cfg;
-}
-
-uint8_t clic_get_cliccfg (clic_instance_t * this_clic){
- return *(volatile uint8_t*)(this_clic->hart_addr+CLIC_CFG);
-}
-
-//sets an interrupt level based encoding of nmbits, nlbits
-uint8_t clic_set_int_level( clic_instance_t * this_clic, uint32_t source, uint8_t level) {
- //extract nlbits
- uint8_t nlbits = clic_get_cliccfg(this_clic);
- nlbits = (nlbits >>1) & 0x7;
-
- //shift level right to mask off unused bits
- level = level>>((this_clic->num_config_bits)-nlbits); //plus this_clic->nmbits which is always 0 for now.
- //shift level into correct bit position
- level = level << (8-this_clic->num_config_bits) + (this_clic->num_config_bits - nlbits);
-
- //write to clicintcfg
- uint8_t current_intcfg = clic_get_intcfg(this_clic, source);
- clic_set_intcfg(this_clic, source, (current_intcfg | level));
-
- return level;
-}
-
-//gets an interrupt level based encoding of nmbits, nlbits
-uint8_t clic_get_int_level( clic_instance_t * this_clic, uint32_t source) {
- uint8_t level;
- level = clic_get_intcfg(this_clic, source);
-
- //extract nlbits
- uint8_t nlbits = clic_get_cliccfg(this_clic);
- nlbits = (nlbits >>1) & 0x7;
-
- //shift level
- level = level >> (8-(this_clic->num_config_bits));
-
- //shift level right to mask off priority bits
- level = level>>(this_clic->num_config_bits-nlbits); //this_clic->nmbits which is always 0 for now.
-
- return level;
-}
-
-//sets an interrupt priority based encoding of nmbits, nlbits
-uint8_t clic_set_int_priority( clic_instance_t * this_clic, uint32_t source, uint8_t priority) {
- //priority bits = num_config_bits - nlbits
- //extract nlbits
- uint8_t nlbits = clic_get_cliccfg(this_clic);
- nlbits = (nlbits >>1) & 0x7;
-
- uint8_t priority_bits = this_clic->num_config_bits-nlbits;
- if(priority_bits = 0) {
- //no bits to set
- return 0;
- }
- //mask off unused bits
- priority = priority >> (8-priority_bits);
- //shift into the correct bit position
- priority = priority << (8-(this_clic->num_config_bits));
-
- //write to clicintcfg
- uint8_t current_intcfg = clic_get_intcfg(this_clic, source);
- clic_set_intcfg(this_clic, source, (current_intcfg | priority));
- return current_intcfg;
-}
-
-//gets an interrupt priority based encoding of nmbits, nlbits
-uint8_t clic_get_int_priority( clic_instance_t * this_clic, uint32_t source) {
- uint8_t priority;
- priority = clic_get_intcfg(this_clic, source);
-
- //extract nlbits
- uint8_t nlbits = clic_get_cliccfg(this_clic);
- nlbits = (nlbits >>1) & 0x7;
-
- //shift left to mask off level bits
- priority = priority << nlbits;
-
- //shift priority
- priority = priority >> (8-((this_clic->num_config_bits)+nlbits));
-
- return priority;
-}
-
-
diff --git a/bsp/drivers/clic/clic_driver.h b/bsp/drivers/clic/clic_driver.h
deleted file mode 100644
index 27c34c2..0000000
--- a/bsp/drivers/clic/clic_driver.h
+++ /dev/null
@@ -1,44 +0,0 @@
-// See LICENSE file for licence details
-
-#ifndef PLIC_DRIVER_H
-#define PLIC_DRIVER_H
-
-
-__BEGIN_DECLS
-
-#include "platform.h"
-
-typedef void (*interrupt_function_ptr_t) (void);
-
-typedef struct __clic_instance_t
-{
- uintptr_t hart_addr;
- interrupt_function_ptr_t* vect_table;
- uint32_t num_config_bits;
- uint32_t num_sources;
-} clic_instance_t;
-
-// Note that there are no assertions or bounds checking on these
-// parameter values.
-void clic_init (clic_instance_t * this_clic, uintptr_t hart_addr, interrupt_function_ptr_t* vect_table, interrupt_function_ptr_t default_handler, uint32_t num_irq,uint32_t num_config_bits);
-void clic_install_handler (clic_instance_t * this_clic, uint32_t source, interrupt_function_ptr_t handler);
-void clic_enable_interrupt (clic_instance_t * this_clic, uint32_t source);
-void clic_disable_interrupt (clic_instance_t * this_clic, uint32_t source);
-void clic_set_pending(clic_instance_t * this_clic, uint32_t source);
-void clic_clear_pending(clic_instance_t * this_clic, uint32_t source);
-void clic_set_intcfg (clic_instance_t * this_clic, uint32_t source, uint32_t intcfg);
-uint8_t clic_get_intcfg (clic_instance_t * this_clic, uint32_t source);
-void clic_set_cliccfg (clic_instance_t * this_clic, uint32_t cfg);
-uint8_t clic_get_cliccfg (clic_instance_t * this_clic);
-//sets an interrupt level based encoding of nmbits, nlbits
-uint8_t clic_set_int_level( clic_instance_t * this_clic, uint32_t source, uint8_t level);
-//get an interrupt level based encoding of nmbits, nlbits
-uint8_t clic_get_int_level( clic_instance_t * this_clic, uint32_t source);
-//sets an interrupt priority based encoding of nmbits, nlbits
-uint8_t clic_set_int_priority( clic_instance_t * this_clic, uint32_t source, uint8_t priority);
-//sets an interrupt priority based encoding of nmbits, nlbits
-uint8_t clic_get_int_priority( clic_instance_t * this_clic, uint32_t source);
-
-__END_DECLS
-
-#endif