arch/m68k/mac/misc.c

File Facts

System

Linux kernel

Corpus path

arch/m68k/mac/misc.c

Extension

.c

Size

16179 bytes

Lines

667

Domain

Architecture Layer

Bucket

arch/m68k

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• linux/errno.h
• linux/kernel.h
• linux/delay.h
• linux/sched.h
• linux/time.h
• linux/rtc.h
• linux/mm.h
• linux/adb.h
• linux/cuda.h
• linux/pmu.h
• linux/uaccess.h
• asm/io.h
• asm/setup.h
• asm/macintosh.h
• asm/mac_via.h
• asm/mac_oss.h
• asm/machdep.h
• mac.h

Detected Declarations

• function cuda_pram_read_byte
• function cuda_pram_write_byte
• function pmu_pram_read_byte
• function pmu_pram_write_byte
• function via_rtc_recv
• function via_rtc_send
• function via_rtc_command
• function via_pram_read_byte
• function via_pram_write_byte
• function via_read_time
• function via_set_rtc_time
• function via_shutdown
• function oss_shutdown
• function cuda_restart
• function cuda_shutdown
• function mac_pram_read_byte
• function mac_pram_write_byte
• function mac_pram_get_size
• function mac_poweroff
• function mac_reset
• function rtc_time64_to_tm
• function mac_hwclk

Annotated Snippet

switch (macintosh_config->adb_type) {
		case MAC_ADB_IOP:
		case MAC_ADB_II:
		case MAC_ADB_PB1:
			now = via_read_time();
			break;
#ifdef CONFIG_ADB_CUDA
		case MAC_ADB_EGRET:
		case MAC_ADB_CUDA:
			now = cuda_get_time();
			break;
#endif
#ifdef CONFIG_ADB_PMU
		case MAC_ADB_PB2:
			now = pmu_get_time();
			break;
#endif
		default:
			now = 0;
		}

		t->tm_wday = 0;
		unmktime(now, 0,
			 &t->tm_year, &t->tm_mon, &t->tm_mday,
			 &t->tm_hour, &t->tm_min, &t->tm_sec);
		pr_debug("%s: read %ptR\n", __func__, t);
	} else { /* write */
		pr_debug("%s: tried to write %ptR\n", __func__, t);

		switch (macintosh_config->adb_type) {
		case MAC_ADB_IOP:
		case MAC_ADB_II:
		case MAC_ADB_PB1:
			via_set_rtc_time(t);
			break;
#ifdef CONFIG_ADB_CUDA
		case MAC_ADB_EGRET:
		case MAC_ADB_CUDA:
			cuda_set_rtc_time(t);
			break;
#endif
#ifdef CONFIG_ADB_PMU
		case MAC_ADB_PB2:
			pmu_set_rtc_time(t);
			break;
#endif
		default:
			return -ENODEV;
		}
	}
	return 0;
}

Annotation

• Immediate include surface: `linux/types.h`, `linux/errno.h`, `linux/kernel.h`, `linux/delay.h`, `linux/sched.h`, `linux/time.h`, `linux/rtc.h`, `linux/mm.h`.
• Detected declarations: `function cuda_pram_read_byte`, `function cuda_pram_write_byte`, `function pmu_pram_read_byte`, `function pmu_pram_write_byte`, `function via_rtc_recv`, `function via_rtc_send`, `function via_rtc_command`, `function via_pram_read_byte`, `function via_pram_write_byte`, `function via_read_time`.
• Atlas domain: Architecture Layer / arch/m68k.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.