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author | Joel Sherrill <joel@rtems.org> | 2016-01-23 13:06:22 -0600 |
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committer | Gedare Bloom <gedare@rtems.org> | 2016-03-03 16:36:30 -0500 |
commit | 328bd350aa40bd6aff923cd2efd3c14d0c8e0ec4 (patch) | |
tree | 1d5de0b0e1c60f3c4efa694833a1eaae02b1cd9a /c/src/lib/libcpu/i386/cpu.h | |
parent | i386 ..score/cpu.h: Fix spacing (diff) | |
download | rtems-328bd350aa40bd6aff923cd2efd3c14d0c8e0ec4.tar.bz2 |
i386: refactor libcpu/cpu.h into rtems/score/i386.h
Fixes #2515.
Diffstat (limited to 'c/src/lib/libcpu/i386/cpu.h')
-rw-r--r-- | c/src/lib/libcpu/i386/cpu.h | 475 |
1 files changed, 0 insertions, 475 deletions
diff --git a/c/src/lib/libcpu/i386/cpu.h b/c/src/lib/libcpu/i386/cpu.h deleted file mode 100644 index c0c4756f1e..0000000000 --- a/c/src/lib/libcpu/i386/cpu.h +++ /dev/null @@ -1,475 +0,0 @@ -/* - * @file cpu.h - * - * This file contains definitions for data structure related - * to Intel system programming. More information can be found - * on Intel site and more precisely in the following book : - * - * Pentium Processor familly - * Developper's Manual - * - * Volume 3 : Architecture and Programming Manual - * - * Copyright (C) 1998 Eric Valette (valette@crf.canon.fr) - * Canon Centre Recherche France. - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#ifndef _LIBCPU_i386_CPU_H -#define _LIBCPU_i386_CPU_H - -#include <rtems/score/registers.h> - -#ifndef ASM - -/* - * Interrupt Level Macros - */ -#include <rtems/score/interrupts.h> - -#include <rtems/score/basedefs.h> - -/* - * Segment Access Routines - * - * NOTE: Unfortunately, these are still static inlines even when the - * "macro" implementation of the generic code is used. - */ - -static __inline__ unsigned short i386_get_cs(void) -{ - register unsigned short segment = 0; - - __asm__ volatile ( "movw %%cs,%0" : "=r" (segment) : "0" (segment) ); - - return segment; -} - -static __inline__ unsigned short i386_get_ds(void) -{ - register unsigned short segment = 0; - - __asm__ volatile ( "movw %%ds,%0" : "=r" (segment) : "0" (segment) ); - - return segment; -} - -static __inline__ unsigned short i386_get_es(void) -{ - register unsigned short segment = 0; - - __asm__ volatile ( "movw %%es,%0" : "=r" (segment) : "0" (segment) ); - - return segment; -} - -static __inline__ unsigned short i386_get_ss(void) -{ - register unsigned short segment = 0; - - __asm__ volatile ( "movw %%ss,%0" : "=r" (segment) : "0" (segment) ); - - return segment; -} - -static __inline__ unsigned short i386_get_fs(void) -{ - register unsigned short segment = 0; - - __asm__ volatile ( "movw %%fs,%0" : "=r" (segment) : "0" (segment) ); - - return segment; -} - -static __inline__ unsigned short i386_get_gs(void) -{ - register unsigned short segment = 0; - - __asm__ volatile ( "movw %%gs,%0" : "=r" (segment) : "0" (segment) ); - - return segment; -} - -/* - * IO Port Access Routines - */ - -#define i386_outport_byte( _port, _value ) \ -do { register unsigned short __port = _port; \ - register unsigned char __value = _value; \ - \ - __asm__ volatile ( "outb %0,%1" : : "a" (__value), "d" (__port) ); \ - } while (0) - -#define i386_outport_word( _port, _value ) \ -do { register unsigned short __port = _port; \ - register unsigned short __value = _value; \ - \ - __asm__ volatile ( "outw %0,%1" : : "a" (__value), "d" (__port) ); \ - } while (0) - -#define i386_outport_long( _port, _value ) \ -do { register unsigned short __port = _port; \ - register unsigned int __value = _value; \ - \ - __asm__ volatile ( "outl %0,%1" : : "a" (__value), "d" (__port) ); \ - } while (0) - -#define i386_inport_byte( _port, _value ) \ -do { register unsigned short __port = _port; \ - register unsigned char __value = 0; \ - \ - __asm__ volatile ( "inb %1,%0" : "=a" (__value) \ - : "d" (__port) \ - ); \ - _value = __value; \ - } while (0) - -#define i386_inport_word( _port, _value ) \ -do { register unsigned short __port = _port; \ - register unsigned short __value = 0; \ - \ - __asm__ volatile ( "inw %1,%0" : "=a" (__value) \ - : "d" (__port) \ - ); \ - _value = __value; \ - } while (0) - -#define i386_inport_long( _port, _value ) \ -do { register unsigned short __port = _port; \ - register unsigned int __value = 0; \ - \ - __asm__ volatile ( "inl %1,%0" : "=a" (__value) \ - : "d" (__port) \ - ); \ - _value = __value; \ - } while (0) - -/* - * Type definition for raw interrupts. - */ - -typedef unsigned char rtems_vector_offset; - -typedef struct __rtems_raw_irq_connect_data__{ - /* - * IDT vector offset (IRQ line + PC386_IRQ_VECTOR_BASE) - */ - rtems_vector_offset idtIndex; - /* - * IDT raw handler. See comment on handler properties below in function prototype. - */ - rtems_raw_irq_hdl hdl; - /* - * function for enabling raw interrupts. In order to be consistent - * with the fact that the raw connexion can defined in the - * libcpu library, this library should have no knowledge of - * board specific hardware to manage interrupts and thus the - * "on" routine must enable the irq both at device and PIC level. - * - */ - rtems_raw_irq_enable on; - /* - * function for disabling raw interrupts. In order to be consistent - * with the fact that the raw connexion can defined in the - * libcpu library, this library should have no knowledge of - * board specific hardware to manage interrupts and thus the - * "on" routine must disable the irq both at device and PIC level. - * - */ - rtems_raw_irq_disable off; - /* - * function enabling to know what interrupt may currently occur - */ - rtems_raw_irq_is_enabled isOn; -}rtems_raw_irq_connect_data; - -typedef struct { - /* - * size of all the table fields (*Tbl) described below. - */ - unsigned int idtSize; - /* - * Default handler used when disconnecting interrupts. - */ - rtems_raw_irq_connect_data defaultRawEntry; - /* - * Table containing initials/current value. - */ - rtems_raw_irq_connect_data* rawIrqHdlTbl; -}rtems_raw_irq_global_settings; - -#include <rtems/score/idtr.h> - -/* - * C callable function enabling to get handler currently connected to a vector - * - */ -rtems_raw_irq_hdl get_hdl_from_vector(rtems_vector_offset); - -/* - * C callable function enabling to set up one raw idt entry - */ -extern int i386_set_idt_entry (const rtems_raw_irq_connect_data*); - -/* - * C callable function enabling to get one current raw idt entry - */ -extern int i386_get_current_idt_entry (rtems_raw_irq_connect_data*); - -/* - * C callable function enabling to remove one current raw idt entry - */ -extern int i386_delete_idt_entry (const rtems_raw_irq_connect_data*); - -/* - * C callable function enabling to init idt. - * - * CAUTION : this function assumes that the IDTR register - * has been already set. - */ -extern int i386_init_idt (rtems_raw_irq_global_settings* config); - -/* - * C callable function enabling to get actual idt configuration - */ -extern int i386_get_idt_config (rtems_raw_irq_global_settings** config); - - -/* - * See page 11.12 Figure 11-8. - * - */ -/** - * @brief describes one entry of Global/Local Descriptor Table - */ -typedef struct { - unsigned int limit_15_0 : 16; - unsigned int base_address_15_0 : 16; - unsigned int base_address_23_16 : 8; - unsigned int type : 4; - unsigned int descriptor_type : 1; - unsigned int privilege : 2; - unsigned int present : 1; - unsigned int limit_19_16 : 4; - unsigned int available : 1; - unsigned int fixed_value_bits : 1; - unsigned int operation_size : 1; - unsigned int granularity : 1; - unsigned int base_address_31_24 : 8; -} RTEMS_PACKED segment_descriptors; - -/* - * C callable function enabling to get easilly usable info from - * the actual value of GDT register. - */ -extern void i386_get_info_from_GDTR (segment_descriptors** table, - uint16_t* limit); -/* - * C callable function enabling to change the value of GDT register. Must be called - * with interrupts masked at processor level!!!. - */ -extern void i386_set_GDTR (segment_descriptors*, - uint16_t limit); - -/** - * @brief Allows to set a GDT entry. - * - * Puts global descriptor \p sd to the global descriptor table on index - * \p segment_selector_index - * - * @param[in] segment_selector_index index to GDT entry - * @param[in] sd structure to be coppied to given \p segment_selector in GDT - * @retval 0 FAILED out of GDT range or index is 0, which is not valid - * index in GDT - * @retval 1 SUCCESS - */ -extern uint32_t i386_raw_gdt_entry (uint16_t segment_selector_index, - segment_descriptors* sd); - -/** - * @brief fills \p sd with provided \p base in appropriate fields of \p sd - * - * @param[in] base 32-bit address to be set as descriptor's base - * @param[out] sd descriptor being filled with \p base - */ -extern void i386_fill_segment_desc_base (uint32_t base, - segment_descriptors* sd); - -/** - * @brief fills \p sd with provided \p limit in appropriate fields of \p sd - * - * sets granularity bit if necessary - * - * @param[in] limit 32-bit value representing number of limit bytes - * @param[out] sd descriptor being filled with \p limit - */ -extern void i386_fill_segment_desc_limit (uint32_t limit, - segment_descriptors* sd); - -/* - * C callable function enabling to set up one raw interrupt handler - */ -extern uint32_t i386_set_gdt_entry (uint16_t segment_selector, - uint32_t base, - uint32_t limit); - -/** - * @brief Returns next empty descriptor in GDT. - * - * Number of descriptors that can be returned depends on \a GDT_SIZE - * - * @retval 0 FAILED GDT is full - * @retval <1;65535> segment_selector number as index to GDT - */ -extern uint16_t i386_next_empty_gdt_entry (void); - -/** - * @brief Copies GDT entry at index \p segment_selector to structure - * pointed to by \p struct_to_fill - * - * @param[in] segment_selector index to GDT table specifying descriptor to copy - * @param[out] struct_to_fill pointer to memory where will be descriptor coppied - * @retval 0 FAILED segment_selector out of GDT range - * @retval <1;65535> retrieved segment_selector - */ -extern uint16_t i386_cpy_gdt_entry (uint16_t segment_selector, - segment_descriptors* struct_to_fill); - -/** - * @brief Returns pointer to GDT table at index given by \p segment_selector - * - * @param[in] sgmnt_selector index to GDT table for specifying descriptor to get - * @retval NULL FAILED segment_selector out of GDT range - * @retval pointer to GDT table at \p segment_selector - */ -extern segment_descriptors* i386_get_gdt_entry (uint16_t sgmnt_selector); - -/** - * @brief Extracts base address from GDT entry pointed to by \p gdt_entry - * - * @param[in] gdt_entry pointer to entry from which base should be retrieved - * @retval base address from GDT entry -*/ -RTEMS_INLINE_ROUTINE void* i386_base_gdt_entry (segment_descriptors* gdt_entry) -{ - return (void*)(gdt_entry->base_address_15_0 | - (gdt_entry->base_address_23_16<<16) | - (gdt_entry->base_address_31_24<<24)); -} - -/** - * @brief Extracts limit in bytes from GDT entry pointed to by \p gdt_entry - * - * @param[in] gdt_entry pointer to entry from which limit should be retrieved - * @retval limit value in bytes from GDT entry - */ -extern uint32_t i386_limit_gdt_entry (segment_descriptors* gdt_entry); - -/* - * See page 11.18 Figure 11-12. - * - */ - -typedef struct { - unsigned int offset : 12; - unsigned int page : 10; - unsigned int directory : 10; -}la_bits; - -typedef union { - la_bits bits; - unsigned int address; -}linear_address; - - -/* - * See page 11.20 Figure 11-14. - * - */ - -typedef struct { - unsigned int present : 1; - unsigned int writable : 1; - unsigned int user : 1; - unsigned int write_through : 1; - unsigned int cache_disable : 1; - unsigned int accessed : 1; - unsigned int reserved1 : 1; - unsigned int page_size : 1; - unsigned int reserved2 : 1; - unsigned int available : 3; - unsigned int page_frame_address : 20; -}page_dir_bits; - -typedef union { - page_dir_bits bits; - unsigned int dir_entry; -}page_dir_entry; - -typedef struct { - unsigned int present : 1; - unsigned int writable : 1; - unsigned int user : 1; - unsigned int write_through : 1; - unsigned int cache_disable : 1; - unsigned int accessed : 1; - unsigned int dirty : 1; - unsigned int reserved2 : 2; - unsigned int available : 3; - unsigned int page_frame_address : 20; -}page_table_bits; - -typedef union { - page_table_bits bits; - unsigned int table_entry; -} page_table_entry; - -/* - * definitions related to page table entry - */ -#define PG_SIZE 0x1000 -#define MASK_OFFSET 0xFFF -#define MAX_ENTRY (PG_SIZE/sizeof(page_dir_entry)) -#define FOUR_MB 0x400000 -#define MASK_FLAGS 0x1A - -#define PTE_PRESENT 0x01 -#define PTE_WRITABLE 0x02 -#define PTE_USER 0x04 -#define PTE_WRITE_THROUGH 0x08 -#define PTE_CACHE_DISABLE 0x10 - -typedef struct { - page_dir_entry pageDirEntry[MAX_ENTRY]; -} page_directory; - -typedef struct { - page_table_entry pageTableEntry[MAX_ENTRY]; -} page_table; - - -/* C declaration for paging management */ - -extern int _CPU_is_cache_enabled(void); -extern int _CPU_is_paging_enabled(void); -extern int init_paging(void); -extern void _CPU_enable_paging(void); -extern void _CPU_disable_paging(void); -extern void _CPU_disable_cache(void); -extern void _CPU_enable_cache(void); -extern int _CPU_map_phys_address - (void **mappedAddress, void *physAddress, - int size, int flag); -extern int _CPU_unmap_virt_address (void *mappedAddress, int size); -extern int _CPU_change_memory_mapping_attribute - (void **newAddress, void *mappedAddress, - unsigned int size, unsigned int flag); -extern int _CPU_display_memory_attribute(void); - -# endif /* ASM */ - -#endif |