^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * DRAM access routines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <sound/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <sound/gus.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <sound/info.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static int snd_gus_dram_poke(struct snd_gus_card *gus, char __user *_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) unsigned int address, unsigned int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) unsigned int size1, size2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) char buffer[256], *pbuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) while (size > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) size1 = size > sizeof(buffer) ? sizeof(buffer) : size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) if (copy_from_user(buffer, _buffer, size1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) if (gus->interwave) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) spin_lock_irqsave(&gus->reg_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) snd_gf1_dram_addr(gus, address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) outsb(GUSP(gus, DRAM), buffer, size1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) spin_unlock_irqrestore(&gus->reg_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) address += size1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) pbuffer = buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) size2 = size1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) while (size2--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) snd_gf1_poke(gus, address++, *pbuffer++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) size -= size1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) _buffer += size1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int snd_gus_dram_write(struct snd_gus_card *gus, char __user *buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) unsigned int address, unsigned int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return snd_gus_dram_poke(gus, buffer, address, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static int snd_gus_dram_peek(struct snd_gus_card *gus, char __user *_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) unsigned int address, unsigned int size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int rom)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) unsigned int size1, size2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) char buffer[256], *pbuffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) while (size > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) size1 = size > sizeof(buffer) ? sizeof(buffer) : size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (gus->interwave) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) spin_lock_irqsave(&gus->reg_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, rom ? 0x03 : 0x01);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) snd_gf1_dram_addr(gus, address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) insb(GUSP(gus, DRAM), buffer, size1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) spin_unlock_irqrestore(&gus->reg_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) address += size1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) pbuffer = buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) size2 = size1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) while (size2--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) *pbuffer++ = snd_gf1_peek(gus, address++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (copy_to_user(_buffer, buffer, size1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) size -= size1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) _buffer += size1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int snd_gus_dram_read(struct snd_gus_card *gus, char __user *buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) unsigned int address, unsigned int size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int rom)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return snd_gus_dram_peek(gus, buffer, address, size, rom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags