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Merge pull request #2434 from elyosh/hddtiming

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Add realistic HDD timing simulation
This commit is contained in:
Miran Grča
2022-07-10 00:29:21 +02:00
committed by GitHub
parent d6f914cba7 4c93710d79
commit 0ad67f1b82
4 changed files with 521 additions and 55 deletions
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3
src/include/86box/hdc_ide.h
View File

@@ -49,7 +49,7 @@ typedef struct ide_s {
blocksize, blockcount,
hdd_num, channel,
pos, sector_pos,
lba, skip512,
lba,
reset, mdma_mode,
do_initial_read;
uint32_t secount, sector,
@@ -67,6 +67,7 @@ typedef struct ide_s {
/* Stuff mostly used by ATAPI */
scsi_common_t *sc;
int interrupt_drq;
double pending_delay;
int (*get_max)(int ide_has_dma, int type);
int (*get_timings)(int ide_has_dma, int type);

78
src/include/86box/hdd.h
View File

@@ -72,6 +72,62 @@ enum {
};
#endif
enum {
HDD_OP_SEEK = 0,
HDD_OP_READ,
HDD_OP_WRITE
};
#define HDD_MAX_ZONES 16
#define HDD_MAX_CACHE_SEG 16
typedef struct {
uint32_t match_max_mbyte;
uint32_t zones;
uint32_t avg_spt;
uint32_t heads;
uint32_t rpm;
uint32_t target_year;
uint32_t rcache_num_seg;
uint32_t rcache_seg_size;
uint32_t max_multiple;
double full_stroke_ms;
double track_seek_ms;
} hdd_preset_t;
typedef struct {
uint32_t id;
uint32_t lba_addr;
uint32_t ra_addr;
uint32_t host_addr;
uint8_t lru;
uint8_t valid;
} hdd_cache_seg_t;
typedef struct {
// Read cache
hdd_cache_seg_t segments[HDD_MAX_CACHE_SEG];
uint32_t num_segments;
uint32_t segment_size;
uint32_t ra_segment;
uint8_t ra_ongoing;
uint64_t ra_start_time;
// Write cache
uint32_t write_addr;
uint32_t write_pending;
uint32_t write_size;
uint64_t write_start_time;
} hdd_cache_t;
typedef struct {
uint32_t cylinders;
uint32_t sectors_per_track;
double sector_time_usec;
uint32_t start_sector;
uint32_t end_sector;
uint32_t start_track;
} hdd_zone_t;
/* Define the virtual Hard Disk. */
typedef struct {
@@ -100,6 +156,23 @@ typedef struct {
spt,
hpc, /* Physical geometry parameters */
tracks;
hdd_zone_t zones[HDD_MAX_ZONES];
uint32_t num_zones;
hdd_cache_t cache;
uint32_t phy_cyl;
uint32_t phy_heads;
uint32_t rpm;
uint8_t max_multiple_block;
uint32_t cur_cylinder;
uint32_t cur_track;
uint32_t cur_addr;
double avg_rotation_lat_usec;
double full_stroke_usec;
double head_switch_usec;
double cyl_switch_usec;
} hard_disk_t;
@@ -131,5 +204,10 @@ extern int image_is_hdi(const char *s);
extern int image_is_hdx(const char *s, int check_signature);
extern int image_is_vhd(const char *s, int check_signature);
extern double hdd_timing_write(hard_disk_t *hdd, uint32_t addr, uint32_t len);
extern double hdd_timing_read(hard_disk_t *hdd, uint32_t addr, uint32_t len);
extern double hdd_seek_get_time(hard_disk_t *hdd, uint32_t dst_addr, uint8_t operation, uint8_t continuous, double max_seek_time);
extern void hdd_preset_apply(hard_disk_t *hdd, hdd_preset_t *preset);
extern void hdd_preset_auto(hard_disk_t *hdd);
#endif /*EMU_HDD_H*/