drivers/video/fbdev/sstfb.c

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/sstfb.c

Extension

.c

Size

44520 bytes

Lines

1544

Domain

Driver Families

Bucket

drivers/video

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/aperture.h
• linux/string.h
• linux/kernel.h
• linux/module.h
• linux/fb.h
• linux/pci.h
• linux/delay.h
• linux/init.h
• asm/io.h
• linux/uaccess.h
• video/sstfb.h

Detected Declarations

• function sst_dbg_print_read_reg
• function sst_dbg_print_write_reg
• function __sst_read
• function __sst_write
• function __sst_set_bits
• function __sst_unset_bits
• function __sst_wait_idle
• function __sst_dac_read
• function __sst_dac_write
• function __dac_i_read
• function __dac_i_write
• function sst_calc_pll
• function sstfb_clear_screen
• function sstfb_check_var
• function sstfb_set_par
• function sstfb_setcolreg
• function sstfb_setvgapass
• function store_vgapass
• function show_vgapass
• function sstfb_ioctl
• function sstfb_copyarea
• function command
• function sst_get_memsize
• function sst_detect_att
• function sst_detect_ti
• function byte
• function sst_set_pll_att_ti
• function sst_set_pll_ics
• function sst_set_vidmod_att_ti
• function sst_set_vidmod_ics
• function sst_detect_dactype
• function sst_init
• function sst_shutdown
• function sstfb_setup
• function sstfb_probe
• function sstfb_remove
• function sstfb_init
• function sstfb_exit
• module init sstfb_init

Annotated Snippet

static struct pci_driver sstfb_driver = {
	.name		= "sstfb",
	.id_table	= sstfb_id_tbl,
	.probe		= sstfb_probe,
	.remove		= sstfb_remove,
};


static int sstfb_init(void)
{
	char *option = NULL;

	if (fb_modesetting_disabled("sstfb"))
		return -ENODEV;

	if (fb_get_options("sstfb", &option))
		return -ENODEV;
	sstfb_setup(option);

	return pci_register_driver(&sstfb_driver);
}

static void sstfb_exit(void)
{
	pci_unregister_driver(&sstfb_driver);
}


module_init(sstfb_init);
module_exit(sstfb_exit);

MODULE_AUTHOR("(c) 2000,2002 Ghozlane Toumi <gtoumi@laposte.net>");
MODULE_DESCRIPTION("FBDev driver for 3dfx Voodoo Graphics and Voodoo2 based video boards");
MODULE_LICENSE("GPL");

module_param(mem, int, 0);
MODULE_PARM_DESC(mem, "Size of frame buffer memory in MB (1, 2, 4 MB, default=autodetect)");
module_param(vgapass, bool, 0);
MODULE_PARM_DESC(vgapass, "Enable VGA PassThrough mode (0 or 1) (default=0)");
module_param(clipping, bool, 0);
MODULE_PARM_DESC(clipping, "Enable clipping (slower, safer) (0 or 1) (default=1)");
module_param(gfxclk, int, 0);
MODULE_PARM_DESC(gfxclk, "Force graphic chip frequency in MHz. DANGEROUS. (default=auto)");
module_param(slowpci, bool, 0);
MODULE_PARM_DESC(slowpci, "Uses slow PCI settings (0 or 1) (default=0)");
module_param(mode_option, charp, 0);
MODULE_PARM_DESC(mode_option, "Initial video mode (default=" DEFAULT_VIDEO_MODE ")");

Annotation

• Immediate include surface: `linux/aperture.h`, `linux/string.h`, `linux/kernel.h`, `linux/module.h`, `linux/fb.h`, `linux/pci.h`, `linux/delay.h`, `linux/init.h`.
• Detected declarations: `function sst_dbg_print_read_reg`, `function sst_dbg_print_write_reg`, `function __sst_read`, `function __sst_write`, `function __sst_set_bits`, `function __sst_unset_bits`, `function __sst_wait_idle`, `function __sst_dac_read`, `function __sst_dac_write`, `function __dac_i_read`.
• Atlas domain: Driver Families / drivers/video.
• Implementation status: pattern implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.

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.