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qemu/tests/libqos/ahci.h
John Snow 9ab9993f71 libqos/ahci: fix ahci_write_fis for ncq on ppc64 
Don't try to correct the endianness of NCQ commands, which do not
use any fields wider than a single byte.

This corrects the /x86_64/ahci/io/ncq/simple test (and others)
for ppc64 BE hosts.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: John Snow <jsnow@redhat.com>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1436210229-4118-2-git-send-email-jsnow@redhat.com
2015-07-08 11:46:16 -04:00

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#ifndef __libqos_ahci_h
#define __libqos_ahci_h
/*
* AHCI qtest library functions and definitions
*
* Copyright (c) 2014 John Snow <jsnow@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include "libqos/libqos.h"
#include "libqos/pci.h"
#include "libqos/malloc-pc.h"
/*** Supplementary PCI Config Space IDs & Masks ***/
#define PCI_DEVICE_ID_INTEL_Q35_AHCI (0x2922)
#define PCI_MSI_FLAGS_RESERVED (0xFF00)
#define PCI_PM_CTRL_RESERVED (0xFC)
#define PCI_BCC(REG32) ((REG32) >> 24)
#define PCI_PI(REG32) (((REG32) >> 8) & 0xFF)
#define PCI_SCC(REG32) (((REG32) >> 16) & 0xFF)
/*** Recognized AHCI Device Types ***/
#define AHCI_INTEL_ICH9 (PCI_DEVICE_ID_INTEL_Q35_AHCI << 16 | \
PCI_VENDOR_ID_INTEL)
/*** AHCI/HBA Register Offsets and Bitmasks ***/
#define AHCI_CAP (0)
#define AHCI_CAP_NP (0x1F)
#define AHCI_CAP_SXS (0x20)
#define AHCI_CAP_EMS (0x40)
#define AHCI_CAP_CCCS (0x80)
#define AHCI_CAP_NCS (0x1F00)
#define AHCI_CAP_PSC (0x2000)
#define AHCI_CAP_SSC (0x4000)
#define AHCI_CAP_PMD (0x8000)
#define AHCI_CAP_FBSS (0x10000)
#define AHCI_CAP_SPM (0x20000)
#define AHCI_CAP_SAM (0x40000)
#define AHCI_CAP_RESERVED (0x80000)
#define AHCI_CAP_ISS (0xF00000)
#define AHCI_CAP_SCLO (0x1000000)
#define AHCI_CAP_SAL (0x2000000)
#define AHCI_CAP_SALP (0x4000000)
#define AHCI_CAP_SSS (0x8000000)
#define AHCI_CAP_SMPS (0x10000000)
#define AHCI_CAP_SSNTF (0x20000000)
#define AHCI_CAP_SNCQ (0x40000000)
#define AHCI_CAP_S64A (0x80000000)
#define AHCI_GHC (1)
#define AHCI_GHC_HR (0x01)
#define AHCI_GHC_IE (0x02)
#define AHCI_GHC_MRSM (0x04)
#define AHCI_GHC_RESERVED (0x7FFFFFF8)
#define AHCI_GHC_AE (0x80000000)
#define AHCI_IS (2)
#define AHCI_PI (3)
#define AHCI_VS (4)
#define AHCI_CCCCTL (5)
#define AHCI_CCCCTL_EN (0x01)
#define AHCI_CCCCTL_RESERVED (0x06)
#define AHCI_CCCCTL_CC (0xFF00)
#define AHCI_CCCCTL_TV (0xFFFF0000)
#define AHCI_CCCPORTS (6)
#define AHCI_EMLOC (7)
#define AHCI_EMCTL (8)
#define AHCI_EMCTL_STSMR (0x01)
#define AHCI_EMCTL_CTLTM (0x100)
#define AHCI_EMCTL_CTLRST (0x200)
#define AHCI_EMCTL_RESERVED (0xF0F0FCFE)
#define AHCI_CAP2 (9)
#define AHCI_CAP2_BOH (0x01)
#define AHCI_CAP2_NVMP (0x02)
#define AHCI_CAP2_APST (0x04)
#define AHCI_CAP2_RESERVED (0xFFFFFFF8)
#define AHCI_BOHC (10)
#define AHCI_RESERVED (11)
#define AHCI_NVMHCI (24)
#define AHCI_VENDOR (40)
#define AHCI_PORTS (64)
/*** Port Memory Offsets & Bitmasks ***/
#define AHCI_PX_CLB (0)
#define AHCI_PX_CLB_RESERVED (0x1FF)
#define AHCI_PX_CLBU (1)
#define AHCI_PX_FB (2)
#define AHCI_PX_FB_RESERVED (0xFF)
#define AHCI_PX_FBU (3)
#define AHCI_PX_IS (4)
#define AHCI_PX_IS_DHRS (0x1)
#define AHCI_PX_IS_PSS (0x2)
#define AHCI_PX_IS_DSS (0x4)
#define AHCI_PX_IS_SDBS (0x8)
#define AHCI_PX_IS_UFS (0x10)
#define AHCI_PX_IS_DPS (0x20)
#define AHCI_PX_IS_PCS (0x40)
#define AHCI_PX_IS_DMPS (0x80)
#define AHCI_PX_IS_RESERVED (0x23FFF00)
#define AHCI_PX_IS_PRCS (0x400000)
#define AHCI_PX_IS_IPMS (0x800000)
#define AHCI_PX_IS_OFS (0x1000000)
#define AHCI_PX_IS_INFS (0x4000000)
#define AHCI_PX_IS_IFS (0x8000000)
#define AHCI_PX_IS_HBDS (0x10000000)
#define AHCI_PX_IS_HBFS (0x20000000)
#define AHCI_PX_IS_TFES (0x40000000)
#define AHCI_PX_IS_CPDS (0x80000000)
#define AHCI_PX_IE (5)
#define AHCI_PX_IE_DHRE (0x1)
#define AHCI_PX_IE_PSE (0x2)
#define AHCI_PX_IE_DSE (0x4)
#define AHCI_PX_IE_SDBE (0x8)
#define AHCI_PX_IE_UFE (0x10)
#define AHCI_PX_IE_DPE (0x20)
#define AHCI_PX_IE_PCE (0x40)
#define AHCI_PX_IE_DMPE (0x80)
#define AHCI_PX_IE_RESERVED (0x23FFF00)
#define AHCI_PX_IE_PRCE (0x400000)
#define AHCI_PX_IE_IPME (0x800000)
#define AHCI_PX_IE_OFE (0x1000000)
#define AHCI_PX_IE_INFE (0x4000000)
#define AHCI_PX_IE_IFE (0x8000000)
#define AHCI_PX_IE_HBDE (0x10000000)
#define AHCI_PX_IE_HBFE (0x20000000)
#define AHCI_PX_IE_TFEE (0x40000000)
#define AHCI_PX_IE_CPDE (0x80000000)
#define AHCI_PX_CMD (6)
#define AHCI_PX_CMD_ST (0x1)
#define AHCI_PX_CMD_SUD (0x2)
#define AHCI_PX_CMD_POD (0x4)
#define AHCI_PX_CMD_CLO (0x8)
#define AHCI_PX_CMD_FRE (0x10)
#define AHCI_PX_CMD_RESERVED (0xE0)
#define AHCI_PX_CMD_CCS (0x1F00)
#define AHCI_PX_CMD_MPSS (0x2000)
#define AHCI_PX_CMD_FR (0x4000)
#define AHCI_PX_CMD_CR (0x8000)
#define AHCI_PX_CMD_CPS (0x10000)
#define AHCI_PX_CMD_PMA (0x20000)
#define AHCI_PX_CMD_HPCP (0x40000)
#define AHCI_PX_CMD_MPSP (0x80000)
#define AHCI_PX_CMD_CPD (0x100000)
#define AHCI_PX_CMD_ESP (0x200000)
#define AHCI_PX_CMD_FBSCP (0x400000)
#define AHCI_PX_CMD_APSTE (0x800000)
#define AHCI_PX_CMD_ATAPI (0x1000000)
#define AHCI_PX_CMD_DLAE (0x2000000)
#define AHCI_PX_CMD_ALPE (0x4000000)
#define AHCI_PX_CMD_ASP (0x8000000)
#define AHCI_PX_CMD_ICC (0xF0000000)
#define AHCI_PX_RES1 (7)
#define AHCI_PX_TFD (8)
#define AHCI_PX_TFD_STS (0xFF)
#define AHCI_PX_TFD_STS_ERR (0x01)
#define AHCI_PX_TFD_STS_CS1 (0x06)
#define AHCI_PX_TFD_STS_DRQ (0x08)
#define AHCI_PX_TFD_STS_CS2 (0x70)
#define AHCI_PX_TFD_STS_BSY (0x80)
#define AHCI_PX_TFD_ERR (0xFF00)
#define AHCI_PX_TFD_RESERVED (0xFFFF0000)
#define AHCI_PX_SIG (9)
#define AHCI_PX_SIG_SECTOR_COUNT (0xFF)
#define AHCI_PX_SIG_LBA_LOW (0xFF00)
#define AHCI_PX_SIG_LBA_MID (0xFF0000)
#define AHCI_PX_SIG_LBA_HIGH (0xFF000000)
#define AHCI_PX_SSTS (10)
#define AHCI_PX_SSTS_DET (0x0F)
#define AHCI_PX_SSTS_SPD (0xF0)
#define AHCI_PX_SSTS_IPM (0xF00)
#define AHCI_PX_SSTS_RESERVED (0xFFFFF000)
#define SSTS_DET_NO_DEVICE (0x00)
#define SSTS_DET_PRESENT (0x01)
#define SSTS_DET_ESTABLISHED (0x03)
#define SSTS_DET_OFFLINE (0x04)
#define AHCI_PX_SCTL (11)
#define AHCI_PX_SERR (12)
#define AHCI_PX_SERR_ERR (0xFFFF)
#define AHCI_PX_SERR_DIAG (0xFFFF0000)
#define AHCI_PX_SERR_DIAG_X (0x04000000)
#define AHCI_PX_SACT (13)
#define AHCI_PX_CI (14)
#define AHCI_PX_SNTF (15)
#define AHCI_PX_FBS (16)
#define AHCI_PX_FBS_EN (0x1)
#define AHCI_PX_FBS_DEC (0x2)
#define AHCI_PX_FBS_SDE (0x4)
#define AHCI_PX_FBS_DEV (0xF00)
#define AHCI_PX_FBS_ADO (0xF000)
#define AHCI_PX_FBS_DWE (0xF0000)
#define AHCI_PX_FBS_RESERVED (0xFFF000F8)
#define AHCI_PX_RES2 (17)
#define AHCI_PX_VS (28)
#define HBA_DATA_REGION_SIZE (256)
#define HBA_PORT_DATA_SIZE (128)
#define HBA_PORT_NUM_REG (HBA_PORT_DATA_SIZE/4)
#define AHCI_VERSION_0_95 (0x00000905)
#define AHCI_VERSION_1_0 (0x00010000)
#define AHCI_VERSION_1_1 (0x00010100)
#define AHCI_VERSION_1_2 (0x00010200)
#define AHCI_VERSION_1_3 (0x00010300)
#define AHCI_SECTOR_SIZE (512)
/* FIS types */
enum {
REG_H2D_FIS = 0x27,
REG_D2H_FIS = 0x34,
DMA_ACTIVATE_FIS = 0x39,
DMA_SETUP_FIS = 0x41,
DATA_FIS = 0x46,
BIST_ACTIVATE_FIS = 0x58,
PIO_SETUP_FIS = 0x5F,
SDB_FIS = 0xA1
};
/* FIS flags */
#define REG_H2D_FIS_CMD 0x80
/* ATA Commands */
enum {
/* DMA */
CMD_READ_DMA = 0xC8,
CMD_READ_DMA_EXT = 0x25,
CMD_WRITE_DMA = 0xCA,
CMD_WRITE_DMA_EXT = 0x35,
/* PIO */
CMD_READ_PIO = 0x20,
CMD_READ_PIO_EXT = 0x24,
CMD_WRITE_PIO = 0x30,
CMD_WRITE_PIO_EXT = 0x34,
/* Misc */
CMD_READ_MAX = 0xF8,
CMD_READ_MAX_EXT = 0x27,
CMD_FLUSH_CACHE = 0xE7,
CMD_IDENTIFY = 0xEC,
/* NCQ */
READ_FPDMA_QUEUED = 0x60,
WRITE_FPDMA_QUEUED = 0x61,
};
/* AHCI Command Header Flags & Masks*/
#define CMDH_CFL (0x1F)
#define CMDH_ATAPI (0x20)
#define CMDH_WRITE (0x40)
#define CMDH_PREFETCH (0x80)
#define CMDH_RESET (0x100)
#define CMDH_BIST (0x200)
#define CMDH_CLR_BSY (0x400)
#define CMDH_RES (0x800)
#define CMDH_PMP (0xF000)
/* ATA device register masks */
#define ATA_DEVICE_MAGIC 0xA0 /* used in ata1-3 */
#define ATA_DEVICE_LBA 0x40
#define NCQ_DEVICE_MAGIC 0x40 /* for ncq device registers */
#define ATA_DEVICE_DRIVE 0x10
#define ATA_DEVICE_HEAD 0x0F
/*** Structures ***/
typedef struct AHCIPortQState {
uint64_t fb;
uint64_t clb;
uint64_t ctba[32];
uint16_t prdtl[32];
uint8_t next; /** Next Command Slot to Use **/
} AHCIPortQState;
typedef struct AHCIQState {
QOSState *parent;
QPCIDevice *dev;
void *hba_base;
uint64_t barsize;
uint32_t fingerprint;
uint32_t cap;
uint32_t cap2;
AHCIPortQState port[32];
} AHCIQState;
/**
* Generic FIS structure.
*/
typedef struct FIS {
uint8_t fis_type;
uint8_t flags;
char data[0];
} __attribute__((__packed__)) FIS;
/**
* Register device-to-host FIS structure.
*/
typedef struct RegD2HFIS {
/* DW0 */
uint8_t fis_type;
uint8_t flags;
uint8_t status;
uint8_t error;
/* DW1 */
uint8_t lba_lo[3];
uint8_t device;
/* DW2 */
uint8_t lba_hi[3];
uint8_t res0;
/* DW3 */
uint16_t count;
uint16_t res1;
/* DW4 */
uint32_t res2;
} __attribute__((__packed__)) RegD2HFIS;
/**
* Register device-to-host FIS structure;
* PIO Setup variety.
*/
typedef struct PIOSetupFIS {
/* DW0 */
uint8_t fis_type;
uint8_t flags;
uint8_t status;
uint8_t error;
/* DW1 */
uint8_t lba_lo[3];
uint8_t device;
/* DW2 */
uint8_t lba_hi[3];
uint8_t res0;
/* DW3 */
uint16_t count;
uint8_t res1;
uint8_t e_status;
/* DW4 */
uint16_t tx_count;
uint16_t res2;
} __attribute__((__packed__)) PIOSetupFIS;
/**
* Register host-to-device FIS structure.
*/
typedef struct RegH2DFIS {
/* DW0 */
uint8_t fis_type;
uint8_t flags;
uint8_t command;
uint8_t feature_low;
/* DW1 */
uint8_t lba_lo[3];
uint8_t device;
/* DW2 */
uint8_t lba_hi[3];
uint8_t feature_high;
/* DW3 */
uint16_t count;
uint8_t icc;
uint8_t control;
/* DW4 */
uint8_t aux[4];
} __attribute__((__packed__)) RegH2DFIS;
/**
* Register host-to-device FIS structure, for NCQ commands.
* Actually just a RegH2DFIS, but with fields repurposed.
* Repurposed fields are annotated below.
*/
typedef struct NCQFIS {
/* DW0 */
uint8_t fis_type;
uint8_t flags;
uint8_t command;
uint8_t sector_low; /* H2D: Feature 7:0 */
/* DW1 */
uint8_t lba_lo[3];
uint8_t device;
/* DW2 */
uint8_t lba_hi[3];
uint8_t sector_hi; /* H2D: Feature 15:8 */
/* DW3 */
uint8_t tag; /* H2D: Count 0:7 */
uint8_t prio; /* H2D: Count 15:8 */
uint8_t icc;
uint8_t control;
/* DW4 */
uint8_t aux[4];
} __attribute__((__packed__)) NCQFIS;
/**
* Command List entry structure.
* The command list contains between 1-32 of these structures.
*/
typedef struct AHCICommandHeader {
uint16_t flags; /* Cmd-Fis-Len, PMP#, and flags. */
uint16_t prdtl; /* Phys Region Desc. Table Length */
uint32_t prdbc; /* Phys Region Desc. Byte Count */
uint64_t ctba; /* Command Table Descriptor Base Address */
uint32_t res[4];
} __attribute__((__packed__)) AHCICommandHeader;
/**
* Physical Region Descriptor; pointed to by the Command List Header,
* struct ahci_command.
*/
typedef struct PRD {
uint64_t dba; /* Data Base Address */
uint32_t res; /* Reserved */
uint32_t dbc; /* Data Byte Count (0-indexed) & Interrupt Flag (bit 2^31) */
} __attribute__((__packed__)) PRD;
/* Opaque, defined within ahci.c */
typedef struct AHCICommand AHCICommand;
/*** Macro Utilities ***/
#define BITANY(data, mask) (((data) & (mask)) != 0)
#define BITSET(data, mask) (((data) & (mask)) == (mask))
#define BITCLR(data, mask) (((data) & (mask)) == 0)
#define ASSERT_BIT_SET(data, mask) g_assert_cmphex((data) & (mask), ==, (mask))
#define ASSERT_BIT_CLEAR(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
/* For calculating how big the PRD table needs to be: */
#define CMD_TBL_SIZ(n) ((0x80 + ((n) * sizeof(PRD)) + 0x7F) & ~0x7F)
/* Helpers for reading/writing AHCI HBA register values */
static inline uint32_t ahci_mread(AHCIQState *ahci, size_t offset)
{
return qpci_io_readl(ahci->dev, ahci->hba_base + offset);
}
static inline void ahci_mwrite(AHCIQState *ahci, size_t offset, uint32_t value)
{
qpci_io_writel(ahci->dev, ahci->hba_base + offset, value);
}
static inline uint32_t ahci_rreg(AHCIQState *ahci, uint32_t reg_num)
{
return ahci_mread(ahci, 4 * reg_num);
}
static inline void ahci_wreg(AHCIQState *ahci, uint32_t reg_num, uint32_t value)
{
ahci_mwrite(ahci, 4 * reg_num, value);
}
static inline void ahci_set(AHCIQState *ahci, uint32_t reg_num, uint32_t mask)
{
ahci_wreg(ahci, reg_num, ahci_rreg(ahci, reg_num) | mask);
}
static inline void ahci_clr(AHCIQState *ahci, uint32_t reg_num, uint32_t mask)
{
ahci_wreg(ahci, reg_num, ahci_rreg(ahci, reg_num) & ~mask);
}
static inline size_t ahci_px_offset(uint8_t port, uint32_t reg_num)
{
return AHCI_PORTS + (HBA_PORT_NUM_REG * port) + reg_num;
}
static inline uint32_t ahci_px_rreg(AHCIQState *ahci, uint8_t port,
uint32_t reg_num)
{
return ahci_rreg(ahci, ahci_px_offset(port, reg_num));
}
static inline void ahci_px_wreg(AHCIQState *ahci, uint8_t port,
uint32_t reg_num, uint32_t value)
{
ahci_wreg(ahci, ahci_px_offset(port, reg_num), value);
}
static inline void ahci_px_set(AHCIQState *ahci, uint8_t port,
uint32_t reg_num, uint32_t mask)
{
ahci_px_wreg(ahci, port, reg_num,
ahci_px_rreg(ahci, port, reg_num) | mask);
}
static inline void ahci_px_clr(AHCIQState *ahci, uint8_t port,
uint32_t reg_num, uint32_t mask)
{
ahci_px_wreg(ahci, port, reg_num,
ahci_px_rreg(ahci, port, reg_num) & ~mask);
}
/*** Prototypes ***/
uint64_t ahci_alloc(AHCIQState *ahci, size_t bytes);
void ahci_free(AHCIQState *ahci, uint64_t addr);
QPCIDevice *get_ahci_device(uint32_t *fingerprint);
void free_ahci_device(QPCIDevice *dev);
void ahci_clean_mem(AHCIQState *ahci);
void ahci_pci_enable(AHCIQState *ahci);
void start_ahci_device(AHCIQState *ahci);
void ahci_hba_enable(AHCIQState *ahci);
unsigned ahci_port_select(AHCIQState *ahci);
void ahci_port_clear(AHCIQState *ahci, uint8_t port);
void ahci_port_check_error(AHCIQState *ahci, uint8_t port);
void ahci_port_check_interrupts(AHCIQState *ahci, uint8_t port,
uint32_t intr_mask);
void ahci_port_check_nonbusy(AHCIQState *ahci, uint8_t port, uint8_t slot);
void ahci_port_check_d2h_sanity(AHCIQState *ahci, uint8_t port, uint8_t slot);
void ahci_port_check_pio_sanity(AHCIQState *ahci, uint8_t port,
uint8_t slot, size_t buffsize);
void ahci_port_check_cmd_sanity(AHCIQState *ahci, AHCICommand *cmd);
void ahci_get_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd);
void ahci_set_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd);
void ahci_destroy_command(AHCIQState *ahci, uint8_t port, uint8_t slot);
void ahci_write_fis(AHCIQState *ahci, AHCICommand *cmd);
unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t port);
unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd);
void ahci_guest_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
uint64_t gbuffer, size_t size, uint64_t sector);
AHCICommand *ahci_guest_io_halt(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
uint64_t gbuffer, size_t size, uint64_t sector);
void ahci_guest_io_resume(AHCIQState *ahci, AHCICommand *cmd);
void ahci_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
void *buffer, size_t bufsize, uint64_t sector);
/* Command Lifecycle */
AHCICommand *ahci_command_create(uint8_t command_name);
void ahci_command_commit(AHCIQState *ahci, AHCICommand *cmd, uint8_t port);
void ahci_command_issue(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_issue_async(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_wait(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_verify(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_free(AHCICommand *cmd);
/* Command adjustments */
void ahci_command_set_flags(AHCICommand *cmd, uint16_t cmdh_flags);
void ahci_command_clr_flags(AHCICommand *cmd, uint16_t cmdh_flags);
void ahci_command_set_offset(AHCICommand *cmd, uint64_t lba_sect);
void ahci_command_set_buffer(AHCICommand *cmd, uint64_t buffer);
void ahci_command_set_size(AHCICommand *cmd, uint64_t xbytes);
void ahci_command_set_prd_size(AHCICommand *cmd, unsigned prd_size);
void ahci_command_set_sizes(AHCICommand *cmd, uint64_t xbytes,
unsigned prd_size);
void ahci_command_adjust(AHCICommand *cmd, uint64_t lba_sect, uint64_t gbuffer,
uint64_t xbytes, unsigned prd_size);
/* Command Misc */
uint8_t ahci_command_slot(AHCICommand *cmd);
#endif
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