64a5a272e3
This patch adds the AHCICommand structure, and a set of functions to
operate on the structure.
ahci_command_create - Initialize and create a new AHCICommand in memory
ahci_command_free - Destroy this object.
ahci_command_set_buffer - Set where the guest memory DMA buffer is.
ahci_command_commit - Write this command to the AHCI HBA.
ahci_command_issue - Issue the committed command synchronously.
ahci_command_issue_async - Issue the committed command asynchronously.
ahci_command_wait - Wait for an asynchronous command to finish.
ahci_command_slot - Get the number of the command slot we committed to.
Helpers:
size_to_prdtl - Calculate the required minimum PRDTL size from
a buffer size.
ahci_command_find - Given an ATA command mnemonic, look it up in the
properties table to obtain info about the command.
command_header_init - Initialize the command header with sane values.
command_table_init - Initialize the command table with sane values.
[Peter Maydell <peter.maydell@linaro.org> reported the following clang
warning:
tests/libqos/ahci.c:598:3: warning: redefinition
of typedef 'AHCICommand' is a C11 feature
[-Wtypedef-redefinition]
} AHCICommand;
I have replaced typedef struct ... AHCICommand; with struct ... ;
--Stefan]
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1423158090-25580-13-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
540 lines
18 KiB
C
540 lines
18 KiB
C
#ifndef __libqos_ahci_h
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#define __libqos_ahci_h
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/*
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* AHCI qtest library functions and definitions
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*
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* Copyright (c) 2014 John Snow <jsnow@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "libqos/libqos.h"
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#include "libqos/pci.h"
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#include "libqos/malloc-pc.h"
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/*** Supplementary PCI Config Space IDs & Masks ***/
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#define PCI_DEVICE_ID_INTEL_Q35_AHCI (0x2922)
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#define PCI_MSI_FLAGS_RESERVED (0xFF00)
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#define PCI_PM_CTRL_RESERVED (0xFC)
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#define PCI_BCC(REG32) ((REG32) >> 24)
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#define PCI_PI(REG32) (((REG32) >> 8) & 0xFF)
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#define PCI_SCC(REG32) (((REG32) >> 16) & 0xFF)
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/*** Recognized AHCI Device Types ***/
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#define AHCI_INTEL_ICH9 (PCI_DEVICE_ID_INTEL_Q35_AHCI << 16 | \
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PCI_VENDOR_ID_INTEL)
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/*** AHCI/HBA Register Offsets and Bitmasks ***/
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#define AHCI_CAP (0)
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#define AHCI_CAP_NP (0x1F)
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#define AHCI_CAP_SXS (0x20)
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#define AHCI_CAP_EMS (0x40)
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#define AHCI_CAP_CCCS (0x80)
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#define AHCI_CAP_NCS (0x1F00)
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#define AHCI_CAP_PSC (0x2000)
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#define AHCI_CAP_SSC (0x4000)
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#define AHCI_CAP_PMD (0x8000)
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#define AHCI_CAP_FBSS (0x10000)
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#define AHCI_CAP_SPM (0x20000)
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#define AHCI_CAP_SAM (0x40000)
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#define AHCI_CAP_RESERVED (0x80000)
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#define AHCI_CAP_ISS (0xF00000)
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#define AHCI_CAP_SCLO (0x1000000)
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#define AHCI_CAP_SAL (0x2000000)
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#define AHCI_CAP_SALP (0x4000000)
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#define AHCI_CAP_SSS (0x8000000)
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#define AHCI_CAP_SMPS (0x10000000)
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#define AHCI_CAP_SSNTF (0x20000000)
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#define AHCI_CAP_SNCQ (0x40000000)
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#define AHCI_CAP_S64A (0x80000000)
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#define AHCI_GHC (1)
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#define AHCI_GHC_HR (0x01)
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#define AHCI_GHC_IE (0x02)
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#define AHCI_GHC_MRSM (0x04)
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#define AHCI_GHC_RESERVED (0x7FFFFFF8)
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#define AHCI_GHC_AE (0x80000000)
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#define AHCI_IS (2)
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#define AHCI_PI (3)
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#define AHCI_VS (4)
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#define AHCI_CCCCTL (5)
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#define AHCI_CCCCTL_EN (0x01)
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#define AHCI_CCCCTL_RESERVED (0x06)
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#define AHCI_CCCCTL_CC (0xFF00)
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#define AHCI_CCCCTL_TV (0xFFFF0000)
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#define AHCI_CCCPORTS (6)
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#define AHCI_EMLOC (7)
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#define AHCI_EMCTL (8)
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#define AHCI_EMCTL_STSMR (0x01)
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#define AHCI_EMCTL_CTLTM (0x100)
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#define AHCI_EMCTL_CTLRST (0x200)
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#define AHCI_EMCTL_RESERVED (0xF0F0FCFE)
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#define AHCI_CAP2 (9)
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#define AHCI_CAP2_BOH (0x01)
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#define AHCI_CAP2_NVMP (0x02)
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#define AHCI_CAP2_APST (0x04)
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#define AHCI_CAP2_RESERVED (0xFFFFFFF8)
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#define AHCI_BOHC (10)
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#define AHCI_RESERVED (11)
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#define AHCI_NVMHCI (24)
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#define AHCI_VENDOR (40)
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#define AHCI_PORTS (64)
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/*** Port Memory Offsets & Bitmasks ***/
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#define AHCI_PX_CLB (0)
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#define AHCI_PX_CLB_RESERVED (0x1FF)
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#define AHCI_PX_CLBU (1)
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#define AHCI_PX_FB (2)
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#define AHCI_PX_FB_RESERVED (0xFF)
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#define AHCI_PX_FBU (3)
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#define AHCI_PX_IS (4)
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#define AHCI_PX_IS_DHRS (0x1)
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#define AHCI_PX_IS_PSS (0x2)
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#define AHCI_PX_IS_DSS (0x4)
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#define AHCI_PX_IS_SDBS (0x8)
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#define AHCI_PX_IS_UFS (0x10)
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#define AHCI_PX_IS_DPS (0x20)
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#define AHCI_PX_IS_PCS (0x40)
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#define AHCI_PX_IS_DMPS (0x80)
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#define AHCI_PX_IS_RESERVED (0x23FFF00)
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#define AHCI_PX_IS_PRCS (0x400000)
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#define AHCI_PX_IS_IPMS (0x800000)
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#define AHCI_PX_IS_OFS (0x1000000)
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#define AHCI_PX_IS_INFS (0x4000000)
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#define AHCI_PX_IS_IFS (0x8000000)
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#define AHCI_PX_IS_HBDS (0x10000000)
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#define AHCI_PX_IS_HBFS (0x20000000)
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#define AHCI_PX_IS_TFES (0x40000000)
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#define AHCI_PX_IS_CPDS (0x80000000)
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#define AHCI_PX_IE (5)
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#define AHCI_PX_IE_DHRE (0x1)
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#define AHCI_PX_IE_PSE (0x2)
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#define AHCI_PX_IE_DSE (0x4)
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#define AHCI_PX_IE_SDBE (0x8)
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#define AHCI_PX_IE_UFE (0x10)
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#define AHCI_PX_IE_DPE (0x20)
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#define AHCI_PX_IE_PCE (0x40)
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#define AHCI_PX_IE_DMPE (0x80)
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#define AHCI_PX_IE_RESERVED (0x23FFF00)
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#define AHCI_PX_IE_PRCE (0x400000)
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#define AHCI_PX_IE_IPME (0x800000)
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#define AHCI_PX_IE_OFE (0x1000000)
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#define AHCI_PX_IE_INFE (0x4000000)
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#define AHCI_PX_IE_IFE (0x8000000)
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#define AHCI_PX_IE_HBDE (0x10000000)
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#define AHCI_PX_IE_HBFE (0x20000000)
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#define AHCI_PX_IE_TFEE (0x40000000)
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#define AHCI_PX_IE_CPDE (0x80000000)
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#define AHCI_PX_CMD (6)
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#define AHCI_PX_CMD_ST (0x1)
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#define AHCI_PX_CMD_SUD (0x2)
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#define AHCI_PX_CMD_POD (0x4)
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#define AHCI_PX_CMD_CLO (0x8)
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#define AHCI_PX_CMD_FRE (0x10)
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#define AHCI_PX_CMD_RESERVED (0xE0)
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#define AHCI_PX_CMD_CCS (0x1F00)
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#define AHCI_PX_CMD_MPSS (0x2000)
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#define AHCI_PX_CMD_FR (0x4000)
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#define AHCI_PX_CMD_CR (0x8000)
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#define AHCI_PX_CMD_CPS (0x10000)
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#define AHCI_PX_CMD_PMA (0x20000)
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#define AHCI_PX_CMD_HPCP (0x40000)
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#define AHCI_PX_CMD_MPSP (0x80000)
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#define AHCI_PX_CMD_CPD (0x100000)
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#define AHCI_PX_CMD_ESP (0x200000)
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#define AHCI_PX_CMD_FBSCP (0x400000)
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#define AHCI_PX_CMD_APSTE (0x800000)
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#define AHCI_PX_CMD_ATAPI (0x1000000)
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#define AHCI_PX_CMD_DLAE (0x2000000)
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#define AHCI_PX_CMD_ALPE (0x4000000)
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#define AHCI_PX_CMD_ASP (0x8000000)
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#define AHCI_PX_CMD_ICC (0xF0000000)
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#define AHCI_PX_RES1 (7)
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#define AHCI_PX_TFD (8)
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#define AHCI_PX_TFD_STS (0xFF)
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#define AHCI_PX_TFD_STS_ERR (0x01)
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#define AHCI_PX_TFD_STS_CS1 (0x06)
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#define AHCI_PX_TFD_STS_DRQ (0x08)
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#define AHCI_PX_TFD_STS_CS2 (0x70)
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#define AHCI_PX_TFD_STS_BSY (0x80)
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#define AHCI_PX_TFD_ERR (0xFF00)
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#define AHCI_PX_TFD_RESERVED (0xFFFF0000)
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#define AHCI_PX_SIG (9)
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#define AHCI_PX_SIG_SECTOR_COUNT (0xFF)
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#define AHCI_PX_SIG_LBA_LOW (0xFF00)
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#define AHCI_PX_SIG_LBA_MID (0xFF0000)
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#define AHCI_PX_SIG_LBA_HIGH (0xFF000000)
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#define AHCI_PX_SSTS (10)
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#define AHCI_PX_SSTS_DET (0x0F)
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#define AHCI_PX_SSTS_SPD (0xF0)
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#define AHCI_PX_SSTS_IPM (0xF00)
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#define AHCI_PX_SSTS_RESERVED (0xFFFFF000)
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#define SSTS_DET_NO_DEVICE (0x00)
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#define SSTS_DET_PRESENT (0x01)
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#define SSTS_DET_ESTABLISHED (0x03)
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#define SSTS_DET_OFFLINE (0x04)
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#define AHCI_PX_SCTL (11)
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#define AHCI_PX_SERR (12)
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#define AHCI_PX_SERR_ERR (0xFFFF)
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#define AHCI_PX_SERR_DIAG (0xFFFF0000)
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#define AHCI_PX_SERR_DIAG_X (0x04000000)
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#define AHCI_PX_SACT (13)
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#define AHCI_PX_CI (14)
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#define AHCI_PX_SNTF (15)
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#define AHCI_PX_FBS (16)
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#define AHCI_PX_FBS_EN (0x1)
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#define AHCI_PX_FBS_DEC (0x2)
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#define AHCI_PX_FBS_SDE (0x4)
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#define AHCI_PX_FBS_DEV (0xF00)
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#define AHCI_PX_FBS_ADO (0xF000)
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#define AHCI_PX_FBS_DWE (0xF0000)
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#define AHCI_PX_FBS_RESERVED (0xFFF000F8)
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#define AHCI_PX_RES2 (17)
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#define AHCI_PX_VS (28)
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#define HBA_DATA_REGION_SIZE (256)
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#define HBA_PORT_DATA_SIZE (128)
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#define HBA_PORT_NUM_REG (HBA_PORT_DATA_SIZE/4)
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#define AHCI_VERSION_0_95 (0x00000905)
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#define AHCI_VERSION_1_0 (0x00010000)
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#define AHCI_VERSION_1_1 (0x00010100)
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#define AHCI_VERSION_1_2 (0x00010200)
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#define AHCI_VERSION_1_3 (0x00010300)
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#define AHCI_SECTOR_SIZE (512)
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/* FIS types */
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enum {
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REG_H2D_FIS = 0x27,
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REG_D2H_FIS = 0x34,
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DMA_ACTIVATE_FIS = 0x39,
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DMA_SETUP_FIS = 0x41,
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DATA_FIS = 0x46,
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BIST_ACTIVATE_FIS = 0x58,
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PIO_SETUP_FIS = 0x5F,
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SDB_FIS = 0xA1
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};
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/* FIS flags */
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#define REG_H2D_FIS_CMD 0x80
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/* ATA Commands */
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enum {
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/* DMA */
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CMD_READ_DMA = 0xC8,
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CMD_READ_DMA_EXT = 0x25,
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CMD_WRITE_DMA = 0xCA,
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CMD_WRITE_DMA_EXT = 0x35,
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/* PIO */
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CMD_READ_PIO = 0x20,
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CMD_READ_PIO_EXT = 0x24,
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CMD_WRITE_PIO = 0x30,
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CMD_WRITE_PIO_EXT = 0x34,
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/* Misc */
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CMD_READ_MAX = 0xF8,
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CMD_READ_MAX_EXT = 0x27,
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CMD_FLUSH_CACHE = 0xE7,
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CMD_IDENTIFY = 0xEC
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};
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/* AHCI Command Header Flags & Masks*/
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#define CMDH_CFL (0x1F)
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#define CMDH_ATAPI (0x20)
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#define CMDH_WRITE (0x40)
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#define CMDH_PREFETCH (0x80)
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#define CMDH_RESET (0x100)
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#define CMDH_BIST (0x200)
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#define CMDH_CLR_BSY (0x400)
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#define CMDH_RES (0x800)
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#define CMDH_PMP (0xF000)
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/* ATA device register masks */
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#define ATA_DEVICE_MAGIC 0xA0
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#define ATA_DEVICE_LBA 0x40
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#define ATA_DEVICE_DRIVE 0x10
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#define ATA_DEVICE_HEAD 0x0F
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/*** Structures ***/
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typedef struct AHCIPortQState {
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uint64_t fb;
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uint64_t clb;
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uint64_t ctba[32];
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uint16_t prdtl[32];
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uint8_t next; /** Next Command Slot to Use **/
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} AHCIPortQState;
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typedef struct AHCIQState {
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QOSState *parent;
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QPCIDevice *dev;
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void *hba_base;
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uint64_t barsize;
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uint32_t fingerprint;
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uint32_t cap;
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uint32_t cap2;
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AHCIPortQState port[32];
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} AHCIQState;
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/**
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* Generic FIS structure.
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*/
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typedef struct FIS {
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uint8_t fis_type;
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uint8_t flags;
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char data[0];
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} __attribute__((__packed__)) FIS;
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/**
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* Register device-to-host FIS structure.
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*/
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typedef struct RegD2HFIS {
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/* DW0 */
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uint8_t fis_type;
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uint8_t flags;
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uint8_t status;
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uint8_t error;
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/* DW1 */
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uint8_t lba_lo[3];
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uint8_t device;
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/* DW2 */
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uint8_t lba_hi[3];
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uint8_t res0;
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/* DW3 */
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uint16_t count;
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uint16_t res1;
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/* DW4 */
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uint32_t res2;
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} __attribute__((__packed__)) RegD2HFIS;
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/**
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* Register device-to-host FIS structure;
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* PIO Setup variety.
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*/
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typedef struct PIOSetupFIS {
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/* DW0 */
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uint8_t fis_type;
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uint8_t flags;
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uint8_t status;
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uint8_t error;
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/* DW1 */
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uint8_t lba_lo[3];
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uint8_t device;
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/* DW2 */
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uint8_t lba_hi[3];
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uint8_t res0;
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/* DW3 */
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uint16_t count;
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uint8_t res1;
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uint8_t e_status;
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/* DW4 */
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uint16_t tx_count;
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uint16_t res2;
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} __attribute__((__packed__)) PIOSetupFIS;
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/**
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* Register host-to-device FIS structure.
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*/
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typedef struct RegH2DFIS {
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/* DW0 */
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uint8_t fis_type;
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uint8_t flags;
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uint8_t command;
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uint8_t feature_low;
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/* DW1 */
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uint8_t lba_lo[3];
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uint8_t device;
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/* DW2 */
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uint8_t lba_hi[3];
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uint8_t feature_high;
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/* DW3 */
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uint16_t count;
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uint8_t icc;
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uint8_t control;
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/* DW4 */
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uint8_t aux[4];
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} __attribute__((__packed__)) RegH2DFIS;
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/**
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* Command List entry structure.
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* The command list contains between 1-32 of these structures.
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*/
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typedef struct AHCICommandHeader {
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uint16_t flags; /* Cmd-Fis-Len, PMP#, and flags. */
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uint16_t prdtl; /* Phys Region Desc. Table Length */
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uint32_t prdbc; /* Phys Region Desc. Byte Count */
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uint64_t ctba; /* Command Table Descriptor Base Address */
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uint32_t res[4];
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} __attribute__((__packed__)) AHCICommandHeader;
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/**
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* Physical Region Descriptor; pointed to by the Command List Header,
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* struct ahci_command.
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*/
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typedef struct PRD {
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uint64_t dba; /* Data Base Address */
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uint32_t res; /* Reserved */
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uint32_t dbc; /* Data Byte Count (0-indexed) & Interrupt Flag (bit 2^31) */
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} __attribute__((__packed__)) PRD;
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/* Opaque, defined within ahci.c */
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typedef struct AHCICommand AHCICommand;
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/*** Macro Utilities ***/
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#define BITANY(data, mask) (((data) & (mask)) != 0)
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#define BITSET(data, mask) (((data) & (mask)) == (mask))
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#define BITCLR(data, mask) (((data) & (mask)) == 0)
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#define ASSERT_BIT_SET(data, mask) g_assert_cmphex((data) & (mask), ==, (mask))
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#define ASSERT_BIT_CLEAR(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
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/* For calculating how big the PRD table needs to be: */
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#define CMD_TBL_SIZ(n) ((0x80 + ((n) * sizeof(PRD)) + 0x7F) & ~0x7F)
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/* Helpers for reading/writing AHCI HBA register values */
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static inline uint32_t ahci_mread(AHCIQState *ahci, size_t offset)
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{
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return qpci_io_readl(ahci->dev, ahci->hba_base + offset);
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}
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static inline void ahci_mwrite(AHCIQState *ahci, size_t offset, uint32_t value)
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{
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qpci_io_writel(ahci->dev, ahci->hba_base + offset, value);
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}
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static inline uint32_t ahci_rreg(AHCIQState *ahci, uint32_t reg_num)
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{
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return ahci_mread(ahci, 4 * reg_num);
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}
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static inline void ahci_wreg(AHCIQState *ahci, uint32_t reg_num, uint32_t value)
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{
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ahci_mwrite(ahci, 4 * reg_num, value);
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}
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static inline void ahci_set(AHCIQState *ahci, uint32_t reg_num, uint32_t mask)
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{
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ahci_wreg(ahci, reg_num, ahci_rreg(ahci, reg_num) | mask);
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}
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static inline void ahci_clr(AHCIQState *ahci, uint32_t reg_num, uint32_t mask)
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{
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ahci_wreg(ahci, reg_num, ahci_rreg(ahci, reg_num) & ~mask);
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}
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static inline size_t ahci_px_offset(uint8_t port, uint32_t reg_num)
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{
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return AHCI_PORTS + (HBA_PORT_NUM_REG * port) + reg_num;
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}
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|
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static inline uint32_t ahci_px_rreg(AHCIQState *ahci, uint8_t port,
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|
uint32_t reg_num)
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|
{
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return ahci_rreg(ahci, ahci_px_offset(port, reg_num));
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}
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|
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static inline void ahci_px_wreg(AHCIQState *ahci, uint8_t port,
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|
uint32_t reg_num, uint32_t value)
|
|
{
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|
ahci_wreg(ahci, ahci_px_offset(port, reg_num), value);
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}
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|
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static inline void ahci_px_set(AHCIQState *ahci, uint8_t port,
|
|
uint32_t reg_num, uint32_t mask)
|
|
{
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|
ahci_px_wreg(ahci, port, reg_num,
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ahci_px_rreg(ahci, port, reg_num) | mask);
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}
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|
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|
static inline void ahci_px_clr(AHCIQState *ahci, uint8_t port,
|
|
uint32_t reg_num, uint32_t mask)
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|
{
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|
ahci_px_wreg(ahci, port, reg_num,
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|
ahci_px_rreg(ahci, port, reg_num) & ~mask);
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}
|
|
|
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/*** Prototypes ***/
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|
uint64_t ahci_alloc(AHCIQState *ahci, size_t bytes);
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|
void ahci_free(AHCIQState *ahci, uint64_t addr);
|
|
QPCIDevice *get_ahci_device(uint32_t *fingerprint);
|
|
void free_ahci_device(QPCIDevice *dev);
|
|
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, uint8_t port,
|
|
uint8_t slot, size_t buffsize);
|
|
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, RegH2DFIS *fis, uint64_t addr);
|
|
unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t port);
|
|
unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd);
|
|
|
|
/* 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_free(AHCICommand *cmd);
|
|
|
|
/* Command adjustments */
|
|
void ahci_command_set_buffer(AHCICommand *cmd, uint64_t buffer);
|
|
|
|
/* Command Misc */
|
|
uint8_t ahci_command_slot(AHCICommand *cmd);
|
|
|
|
#endif
|