libata: add ATAPI_* cmd types and implement atapi_cmd_type() (ceb0c642) · Commits · 戴 / test

include/linux/libata.h

+28 −0

Original line number	Diff line number	Diff line
		@@ -35,6 +35,7 @@
		#include <linux/workqueue.h>
		#include <scsi/scsi_host.h>
		#include <linux/acpi.h>
		#include <linux/cdrom.h>

		/*
		* Define if arch has non-standard setup. This is a _PCI_ standard
		@@ -346,6 +347,12 @@ enum {
		ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
		ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
		ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */

		/* ATAPI command types */
		ATAPI_READ = 0, /* READs */
		ATAPI_WRITE = 1, /* WRITEs */
		ATAPI_READ_CD = 2, /* READ CD [MSF] */
		ATAPI_MISC = 3, /* the rest */
		};

		enum ata_xfer_mask {
		@@ -1408,6 +1415,27 @@ static inline int ata_try_flush_cache(const struct ata_device *dev)
		ata_id_has_flush_ext(dev->id);
		}

		static inline int atapi_cmd_type(u8 opcode)
		{
		switch (opcode) {
		case GPCMD_READ_10:
		case GPCMD_READ_12:
		return ATAPI_READ;

		case GPCMD_WRITE_10:
		case GPCMD_WRITE_12:
		case GPCMD_WRITE_AND_VERIFY_10:
		return ATAPI_WRITE;

		case GPCMD_READ_CD:
		case GPCMD_READ_CD_MSF:
		return ATAPI_READ_CD;

		default:
		return ATAPI_MISC;
		}
		}

		static inline unsigned int ac_err_mask(u8 status)
		{
		if (status & (ATA_BUSY \| ATA_DRQ))