[101] | 1 | /*-----------------------------------------------------------------------*/
|
---|
| 2 | /* PFF - Low level disk control module for Win32 (C)ChaN, 2014 */
|
---|
| 3 | /*-----------------------------------------------------------------------*/
|
---|
| 4 |
|
---|
| 5 | #include <string.h>
|
---|
| 6 | #include "pffconf.h"
|
---|
| 7 | #include "diskio.h"
|
---|
| 8 |
|
---|
| 9 | /*--------------------------------------------------------------------------
|
---|
| 10 |
|
---|
| 11 | Module Private Functions
|
---|
| 12 |
|
---|
| 13 | ---------------------------------------------------------------------------*/
|
---|
| 14 |
|
---|
| 15 | #define MAX_DRIVES 1 /* Max number of physical drives to be used */
|
---|
| 16 |
|
---|
| 17 | #define SZ_RAMDISK 768 /* Size of RAM disk [kB] */
|
---|
| 18 | #define SS_RAMDISK 512 /* Sector size of RAM disk [byte] */
|
---|
| 19 |
|
---|
| 20 | #ifndef _MSC_VER
|
---|
| 21 | #define RamDisk ((unsigned char *)0xfff00000)
|
---|
| 22 | #else
|
---|
| 23 | #include <windows.h>
|
---|
| 24 | #include <tchar.h>
|
---|
| 25 | #include <winioctl.h>
|
---|
| 26 |
|
---|
| 27 | unsigned char RamDisk[SZ_RAMDISK * 1024];
|
---|
| 28 | #endif
|
---|
| 29 |
|
---|
| 30 | typedef struct {
|
---|
| 31 | DSTATUS status;
|
---|
| 32 | WORD sz_sector;
|
---|
| 33 | DWORD wofs;
|
---|
| 34 | DWORD wip;
|
---|
| 35 | DWORD n_sectors;
|
---|
| 36 | } STAT;
|
---|
| 37 |
|
---|
| 38 | static volatile
|
---|
| 39 | STAT Stat[MAX_DRIVES];
|
---|
| 40 |
|
---|
| 41 | static
|
---|
| 42 | BYTE Buffer[SS_RAMDISK];
|
---|
| 43 |
|
---|
| 44 | static
|
---|
| 45 | int get_status(volatile STAT *stat) {
|
---|
| 46 | stat->sz_sector = SS_RAMDISK;
|
---|
| 47 | if(stat->sz_sector < _MIN_SS || stat->sz_sector > _MAX_SS) return 0;
|
---|
| 48 | stat->n_sectors = SZ_RAMDISK * 1024 / SS_RAMDISK;
|
---|
| 49 | stat->status = 0;
|
---|
| 50 | return 1;
|
---|
| 51 | }
|
---|
| 52 |
|
---|
| 53 | /*-----------------------------------------------------------------------*/
|
---|
| 54 | /* Initialize Disk Drive */
|
---|
| 55 | /*-----------------------------------------------------------------------*/
|
---|
| 56 | DSTATUS disk_initialize (void)
|
---|
| 57 | {
|
---|
| 58 | DSTATUS sta;
|
---|
| 59 | #ifdef _MSC_VER
|
---|
| 60 | HANDLE h;
|
---|
| 61 | DWORD br;
|
---|
| 62 |
|
---|
| 63 | h = CreateFile(_T("..\\..\\..\\..\\uip\\apps\\webserver\\httpd-fs.bin"), GENERIC_READ, 0, 0, OPEN_EXISTING, 0, 0);
|
---|
| 64 | if (h != INVALID_HANDLE_VALUE) {
|
---|
| 65 | ReadFile(h, RamDisk, sizeof(RamDisk), &br, 0);
|
---|
| 66 | CloseHandle(h);
|
---|
| 67 | }
|
---|
| 68 | #endif
|
---|
| 69 | get_status(&Stat[0]);
|
---|
| 70 | sta = Stat[0].status;
|
---|
| 71 | Stat[0].wip = 0;
|
---|
| 72 |
|
---|
| 73 | return sta;
|
---|
| 74 | }
|
---|
| 75 |
|
---|
| 76 | /*-----------------------------------------------------------------------*/
|
---|
| 77 | /* Get Disk Status */
|
---|
| 78 | /*-----------------------------------------------------------------------*/
|
---|
| 79 | DSTATUS disk_get_status (void)
|
---|
| 80 | {
|
---|
| 81 | return Stat[0].status;
|
---|
| 82 | }
|
---|
| 83 |
|
---|
| 84 | /*-----------------------------------------------------------------------*/
|
---|
| 85 | /* Read Partial Sector */
|
---|
| 86 | /*-----------------------------------------------------------------------*/
|
---|
| 87 | DRESULT disk_readp (
|
---|
| 88 | BYTE* buff, /* Data read buffer */
|
---|
| 89 | DWORD sector, /* Sector number (LBA) */
|
---|
| 90 | UINT offset, /* Offset in the sector */
|
---|
| 91 | UINT count /* Byte count */
|
---|
| 92 | )
|
---|
| 93 | {
|
---|
| 94 | DRESULT res;
|
---|
| 95 | int dofs;
|
---|
| 96 |
|
---|
| 97 |
|
---|
| 98 | if(Stat[0].status & STA_NOINIT) return RES_NOTRDY;
|
---|
| 99 |
|
---|
| 100 | if(sector >= Stat[0].n_sectors || !count || offset + count > Stat[0].sz_sector/* || Stat[0].wip*/) {
|
---|
| 101 | res = RES_PARERR;
|
---|
| 102 | }
|
---|
| 103 | else {
|
---|
| 104 | if(buff) {
|
---|
| 105 | dofs = sector * Stat[0].sz_sector;
|
---|
| 106 | memcpy(buff, &RamDisk[dofs + offset], count);
|
---|
| 107 | res = RES_OK;
|
---|
| 108 | }
|
---|
| 109 | else {
|
---|
| 110 | res = RES_OK;
|
---|
| 111 | }
|
---|
| 112 | }
|
---|
| 113 |
|
---|
| 114 | return res;
|
---|
| 115 | }
|
---|
| 116 |
|
---|
| 117 | /*-----------------------------------------------------------------------*/
|
---|
| 118 | /* Write Partial Sector */
|
---|
| 119 | /*-----------------------------------------------------------------------*/
|
---|
| 120 | DRESULT disk_writep (
|
---|
| 121 | const BYTE* buff, /* Pointer to the write data */
|
---|
| 122 | DWORD sc /* Sector number (LBA), Number of bytes to send */
|
---|
| 123 | )
|
---|
| 124 | {
|
---|
| 125 | DRESULT res;
|
---|
| 126 | int dofs;
|
---|
| 127 |
|
---|
| 128 | if(Stat[0].status & STA_NOINIT) return RES_NOTRDY;
|
---|
| 129 |
|
---|
| 130 | if(!buff) {
|
---|
| 131 | if(sc) {
|
---|
| 132 | Stat[0].wip = sc;
|
---|
| 133 | Stat[0].wofs = 0;
|
---|
| 134 | memset(Buffer, 0, sizeof Buffer);
|
---|
| 135 | res = RES_OK;
|
---|
| 136 | }
|
---|
| 137 | else {
|
---|
| 138 | if(Stat[0].wip) {
|
---|
| 139 | dofs = Stat[0].wip * Stat[0].sz_sector;
|
---|
| 140 | memcpy(RamDisk + dofs, Buffer, Stat[0].sz_sector);
|
---|
| 141 | Stat[0].wip = 0;
|
---|
| 142 | res = RES_OK;
|
---|
| 143 | }
|
---|
| 144 | else {
|
---|
| 145 | res = RES_OK;
|
---|
| 146 | }
|
---|
| 147 | }
|
---|
| 148 | }
|
---|
| 149 | else {
|
---|
| 150 | if(Stat[0].wofs + sc > Stat[0].sz_sector) sc = Stat[0].sz_sector - Stat[0].wofs;
|
---|
| 151 | memcpy(&Buffer[Stat[0].wofs], buff, sc);
|
---|
| 152 | Stat[0].wofs += sc;
|
---|
| 153 | res = RES_OK;
|
---|
| 154 | }
|
---|
| 155 |
|
---|
| 156 | return res;
|
---|
| 157 | }
|
---|