drivers/staging/rtl8723bs/os_dep/sdio_ops_linux.c

File Facts

System

Linux kernel

Corpus path

drivers/staging/rtl8723bs/os_dep/sdio_ops_linux.c

Extension

.c

Size

10062 bytes

Lines

496

Domain

Driver Families

Bucket

drivers/staging

Inferred role

Driver Families: implementation source

Status

source 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 or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• drv_types.h

Detected Declarations

• function Copyright
• function rtw_sdio_set_irq_thd
• function _sd_cmd52_read
• function sd_cmd52_read
• function _sd_cmd52_write
• function sd_cmd52_write
• function sd_read8
• function sd_read32
• function sd_write8
• function sd_write32
• function sdio_claim_host
• function sd_read
• function sdio_claim_host
• function sd_write

Annotated Snippet

if (*err == 0) {
				rtw_reset_continual_io_error(psdiodev);
				break;
			}

			if ((-ESHUTDOWN == *err) || (-ENODEV == *err))
				padapter->bSurpriseRemoved = true;

			if (rtw_inc_and_chk_continual_io_error(psdiodev) == true) {
				padapter->bSurpriseRemoved = true;
				break;
			}
		}
	}
	return  v;
}

void sd_write8(struct intf_hdl *pintfhdl, u32 addr, u8 v, s32 *err)
{
	struct adapter *padapter;
	struct dvobj_priv *psdiodev;
	struct sdio_data *psdio;
	struct sdio_func *func;
	bool claim_needed;

	padapter = pintfhdl->padapter;
	psdiodev = pintfhdl->pintf_dev;
	psdio = &psdiodev->intf_data;

	if (padapter->bSurpriseRemoved)
		return;

	func = psdio->func;
	claim_needed = rtw_sdio_claim_host_needed(func);

	if (claim_needed)
		sdio_claim_host(func);
	sdio_writeb(func, v, addr, err);
	if (claim_needed)
		sdio_release_host(func);
}

void sd_write32(struct intf_hdl *pintfhdl, u32 addr, u32 v, s32 *err)
{
	struct adapter *padapter;
	struct dvobj_priv *psdiodev;
	struct sdio_data *psdio;
	struct sdio_func *func;
	bool claim_needed;

	padapter = pintfhdl->padapter;
	psdiodev = pintfhdl->pintf_dev;
	psdio = &psdiodev->intf_data;

	if (padapter->bSurpriseRemoved)
		return;

	func = psdio->func;
	claim_needed = rtw_sdio_claim_host_needed(func);

	if (claim_needed)
		sdio_claim_host(func);
	sdio_writel(func, v, addr, err);
	if (claim_needed)
		sdio_release_host(func);

	if (err && *err) {
		int i;

		*err = 0;
		for (i = 0; i < SD_IO_TRY_CNT; i++) {
			if (claim_needed)
				sdio_claim_host(func);
			sdio_writel(func, v, addr, err);
			if (claim_needed)
				sdio_release_host(func);
			if (*err == 0) {
				rtw_reset_continual_io_error(psdiodev);
				break;
			}

			if ((-ESHUTDOWN == *err) || (-ENODEV == *err))
				padapter->bSurpriseRemoved = true;

			if (rtw_inc_and_chk_continual_io_error(psdiodev) == true) {
				padapter->bSurpriseRemoved = true;
				break;
			}
		}
	}

Annotation

• Immediate include surface: `drv_types.h`.
• Detected declarations: `function Copyright`, `function rtw_sdio_set_irq_thd`, `function _sd_cmd52_read`, `function sd_cmd52_read`, `function _sd_cmd52_write`, `function sd_cmd52_write`, `function sd_read8`, `function sd_read32`, `function sd_write8`, `function sd_write32`.
• Atlas domain: Driver Families / drivers/staging.
• 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.