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freebsd-dev/sys/dev/siis/siis.h
Konstantin Belousov cd85379104 Make MAXPHYS tunable. Bump MAXPHYS to 1M. 
Replace MAXPHYS by runtime variable maxphys. It is initialized from
MAXPHYS by default, but can be also adjusted with the tunable kern.maxphys.

Make b_pages[] array in struct buf flexible.  Size b_pages[] for buffer
cache buffers exactly to atop(maxbcachebuf) (currently it is sized to
atop(MAXPHYS)), and b_pages[] for pbufs is sized to atop(maxphys) + 1.
The +1 for pbufs allow several pbuf consumers, among them vmapbuf(),
to use unaligned buffers still sized to maxphys, esp. when such
buffers come from userspace (*).  Overall, we save significant amount
of otherwise wasted memory in b_pages[] for buffer cache buffers,
while bumping MAXPHYS to desired high value.

Eliminate all direct uses of the MAXPHYS constant in kernel and driver
sources, except a place which initialize maxphys.  Some random (and
arguably weird) uses of MAXPHYS, e.g. in linuxolator, are converted
straight.  Some drivers, which use MAXPHYS to size embeded structures,
get private MAXPHYS-like constant; their convertion is out of scope
for this work.

Changes to cam/, dev/ahci, dev/ata, dev/mpr, dev/mpt, dev/mvs,
dev/siis, where either submitted by, or based on changes by mav.

Suggested by: mav (*)
Reviewed by:	imp, mav, imp, mckusick, scottl (intermediate versions)
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D27225
2020-11-28 12:12:51 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
/* ATA register defines */
#define ATA_DATA 0 /* (RW) data */
#define ATA_FEATURE 1 /* (W) feature */
#define ATA_F_DMA 0x01 /* enable DMA */
#define ATA_F_OVL 0x02 /* enable overlap */
#define ATA_COUNT 2 /* (W) sector count */
#define ATA_SECTOR 3 /* (RW) sector # */
#define ATA_CYL_LSB 4 /* (RW) cylinder# LSB */
#define ATA_CYL_MSB 5 /* (RW) cylinder# MSB */
#define ATA_DRIVE 6 /* (W) Sector/Drive/Head */
#define ATA_D_LBA 0x40 /* use LBA addressing */
#define ATA_D_IBM 0xa0 /* 512 byte sectors, ECC */
#define ATA_COMMAND 7 /* (W) command */
#define ATA_ERROR 8 /* (R) error */
#define ATA_E_ILI 0x01 /* illegal length */
#define ATA_E_NM 0x02 /* no media */
#define ATA_E_ABORT 0x04 /* command aborted */
#define ATA_E_MCR 0x08 /* media change request */
#define ATA_E_IDNF 0x10 /* ID not found */
#define ATA_E_MC 0x20 /* media changed */
#define ATA_E_UNC 0x40 /* uncorrectable data */
#define ATA_E_ICRC 0x80 /* UDMA crc error */
#define ATA_E_ATAPI_SENSE_MASK 0xf0 /* ATAPI sense key mask */
#define ATA_IREASON 9 /* (R) interrupt reason */
#define ATA_I_CMD 0x01 /* cmd (1) | data (0) */
#define ATA_I_IN 0x02 /* read (1) | write (0) */
#define ATA_I_RELEASE 0x04 /* released bus (1) */
#define ATA_I_TAGMASK 0xf8 /* tag mask */
#define ATA_STATUS 10 /* (R) status */
#define ATA_ALTSTAT 11 /* (R) alternate status */
#define ATA_S_ERROR 0x01 /* error */
#define ATA_S_INDEX 0x02 /* index */
#define ATA_S_CORR 0x04 /* data corrected */
#define ATA_S_DRQ 0x08 /* data request */
#define ATA_S_DSC 0x10 /* drive seek completed */
#define ATA_S_SERVICE 0x10 /* drive needs service */
#define ATA_S_DWF 0x20 /* drive write fault */
#define ATA_S_DMA 0x20 /* DMA ready */
#define ATA_S_READY 0x40 /* drive ready */
#define ATA_S_BUSY 0x80 /* busy */
#define ATA_CONTROL 12 /* (W) control */
#define ATA_A_IDS 0x02 /* disable interrupts */
#define ATA_A_RESET 0x04 /* RESET controller */
#define ATA_A_4BIT 0x08 /* 4 head bits */
#define ATA_A_HOB 0x80 /* High Order Byte enable */
/* SATA register defines */
#define ATA_SSTATUS 13
#define ATA_SS_DET_MASK 0x0000000f
#define ATA_SS_DET_NO_DEVICE 0x00000000
#define ATA_SS_DET_DEV_PRESENT 0x00000001
#define ATA_SS_DET_PHY_ONLINE 0x00000003
#define ATA_SS_DET_PHY_OFFLINE 0x00000004
#define ATA_SS_SPD_MASK 0x000000f0
#define ATA_SS_SPD_NO_SPEED 0x00000000
#define ATA_SS_SPD_GEN1 0x00000010
#define ATA_SS_SPD_GEN2 0x00000020
#define ATA_SS_SPD_GEN3 0x00000030
#define ATA_SS_IPM_MASK 0x00000f00
#define ATA_SS_IPM_NO_DEVICE 0x00000000
#define ATA_SS_IPM_ACTIVE 0x00000100
#define ATA_SS_IPM_PARTIAL 0x00000200
#define ATA_SS_IPM_SLUMBER 0x00000600
#define ATA_SERROR 14
#define ATA_SE_DATA_CORRECTED 0x00000001
#define ATA_SE_COMM_CORRECTED 0x00000002
#define ATA_SE_DATA_ERR 0x00000100
#define ATA_SE_COMM_ERR 0x00000200
#define ATA_SE_PROT_ERR 0x00000400
#define ATA_SE_HOST_ERR 0x00000800
#define ATA_SE_PHY_CHANGED 0x00010000
#define ATA_SE_PHY_IERROR 0x00020000
#define ATA_SE_COMM_WAKE 0x00040000
#define ATA_SE_DECODE_ERR 0x00080000
#define ATA_SE_PARITY_ERR 0x00100000
#define ATA_SE_CRC_ERR 0x00200000
#define ATA_SE_HANDSHAKE_ERR 0x00400000
#define ATA_SE_LINKSEQ_ERR 0x00800000
#define ATA_SE_TRANSPORT_ERR 0x01000000
#define ATA_SE_UNKNOWN_FIS 0x02000000
#define ATA_SCONTROL 15
#define ATA_SC_DET_MASK 0x0000000f
#define ATA_SC_DET_IDLE 0x00000000
#define ATA_SC_DET_RESET 0x00000001
#define ATA_SC_DET_DISABLE 0x00000004
#define ATA_SC_SPD_MASK 0x000000f0
#define ATA_SC_SPD_NO_SPEED 0x00000000
#define ATA_SC_SPD_SPEED_GEN1 0x00000010
#define ATA_SC_SPD_SPEED_GEN2 0x00000020
#define ATA_SC_SPD_SPEED_GEN3 0x00000030
#define ATA_SC_IPM_MASK 0x00000f00
#define ATA_SC_IPM_NONE 0x00000000
#define ATA_SC_IPM_DIS_PARTIAL 0x00000100
#define ATA_SC_IPM_DIS_SLUMBER 0x00000200
#define ATA_SACTIVE 16
/*
* Global registers
*/
#define SIIS_GCTL 0x0040 /* Global Control */
#define SIIS_GCTL_GRESET 0x80000000 /* Global Reset */
#define SIIS_GCTL_MSIACK 0x40000000 /* MSI Ack */
#define SIIS_GCTL_I2C_IE 0x20000000 /* I2C int enable */
#define SIIS_GCTL_300CAP 0x01000000 /* 3Gb/s capable (R) */
#define SIIS_GCTL_PIE(n) (1 << (n)) /* Port int enable */
#define SIIS_IS 0x0044 /* Interrupt Status */
#define SIIS_IS_I2C 0x20000000 /* I2C Int Status */
#define SIIS_IS_PORT(n) (1 << (n)) /* Port interrupt stat */
#define SIIS_PHYCONF 0x0048 /* PHY Configuration */
#define SIIS_BIST_CTL 0x0050
#define SIIS_BIST_PATTERN 0x0054 /* 32 bit pattern */
#define SIIS_BIST_STATUS 0x0058
#define SIIS_I2C_CTL 0x0060
#define SIIS_I2C_STS 0x0064
#define SIIS_I2C_SADDR 0x0068
#define SIIS_I2C_DATA 0x006C
#define SIIS_FLASH_ADDR 0x0070
#define SIIS_GPIO 0x0074
/*
* Port registers
*/
#define SIIS_P_LRAM 0x0000
#define SIIS_P_LRAM_SLOT(i) (SIIS_P_LRAM + i * 128)
#define SIIS_P_PMPSTS(i) (0x0F80 + i * 8)
#define SIIS_P_PMPQACT(i) (0x0F80 + i * 8 + 4)
#define SIIS_P_STS 0x1000
#define SIIS_P_CTLSET 0x1000
#define SIIS_P_CTLCLR 0x1004
#define SIIS_P_CTL_READY 0x80000000
#define SIIS_P_CTL_OOBB 0x02000000
#define SIIS_P_CTL_ACT 0x001F0000
#define SIIS_P_CTL_ACT_SHIFT 16
#define SIIS_P_CTL_LED_ON 0x00008000
#define SIIS_P_CTL_AIA 0x00004000
#define SIIS_P_CTL_PME 0x00002000
#define SIIS_P_CTL_IA 0x00001000
#define SIIS_P_CTL_IR 0x00000800
#define SIIS_P_CTL_32BIT 0x00000400
#define SIIS_P_CTL_SCR_DIS 0x00000200
#define SIIS_P_CTL_CONT_DIS 0x00000100
#define SIIS_P_CTL_TBIST 0x00000080
#define SIIS_P_CTL_RESUME 0x00000040
#define SIIS_P_CTL_PLENGTH 0x00000020
#define SIIS_P_CTL_LED_DIS 0x00000010
#define SIIS_P_CTL_INT_NCOR 0x00000008
#define SIIS_P_CTL_PORT_INIT 0x00000004
#define SIIS_P_CTL_DEV_RESET 0x00000002
#define SIIS_P_CTL_PORT_RESET 0x00000001
#define SIIS_P_IS 0x1008
#define SIIS_P_IX_SDBN 0x00000800
#define SIIS_P_IX_HS_ET 0x00000400
#define SIIS_P_IX_CRC_ET 0x00000200
#define SIIS_P_IX_8_10_ET 0x00000100
#define SIIS_P_IX_DEX 0x00000080
#define SIIS_P_IX_UNRECFIS 0x00000040
#define SIIS_P_IX_COMWAKE 0x00000020
#define SIIS_P_IX_PHYRDYCHG 0x00000010
#define SIIS_P_IX_PMCHG 0x00000008
#define SIIS_P_IX_READY 0x00000004
#define SIIS_P_IX_COMMERR 0x00000002
#define SIIS_P_IX_COMMCOMP 0x00000001
#define SIIS_P_IX_ENABLED SIIS_P_IX_COMMCOMP | SIIS_P_IX_COMMERR | \
SIIS_P_IX_PHYRDYCHG | SIIS_P_IX_SDBN
#define SIIS_P_IESET 0x1010
#define SIIS_P_IECLR 0x1014
#define SIIS_P_CACTU 0x101C
#define SIIS_P_CMDEFIFO 0x1020
#define SIIS_P_CMDERR 0x1024
#define SIIS_P_CMDERR_DEV 1
#define SIIS_P_CMDERR_SDB 2
#define SIIS_P_CMDERR_DATAFIS 3
#define SIIS_P_CMDERR_SENDFIS 4
#define SIIS_P_CMDERR_INCSTATE 5
#define SIIS_P_CMDERR_DIRECTION 6
#define SIIS_P_CMDERR_UNDERRUN 7
#define SIIS_P_CMDERR_OVERRUN 8
#define SIIS_P_CMDERR_LLOVERRUN 9
#define SIIS_P_CMDERR_PPE 11
#define SIIS_P_CMDERR_SGTALIGN 16
#define SIIS_P_CMDERR_PCITASGT 17
#define SIIS_P_CMDERR_OCIMASGT 18
#define SIIS_P_CMDERR_PCIPESGT 19
#define SIIS_P_CMDERR_PRBALIGN 24
#define SIIS_P_CMDERR_PCITAPRB 25
#define SIIS_P_CMDERR_PCIMAPRB 26
#define SIIS_P_CMDERR_PCIPEPRB 27
#define SIIS_P_CMDERR_PCITADATA 33
#define SIIS_P_CMDERR_PCIMADATA 34
#define SIIS_P_CMDERR_PCIPEDATA 35
#define SIIS_P_CMDERR_SERVICE 36
#define SIIS_P_FISCFG 0x1028
#define SIIS_P_PCIEFIFOTH 0x102C
#define SIIS_P_8_10_DEC_ERR 0x1040
#define SIIS_P_CRC_ERR 0x1044
#define SIIS_P_HS_ERR 0x1048
#define SIIS_P_PHYCFG 0x1050
#define SIIS_P_SS 0x1800
#define SIIS_P_SS_ATTN 0x80000000
#define SIIS_P_CACTL(i) (0x1C00 + i * 8)
#define SIIS_P_CACTH(i) (0x1C00 + i * 8 + 4)
#define SIIS_P_CTX 0x1E04
#define SIIS_P_CTX_SLOT 0x0000001F
#define SIIS_P_CTX_SLOT_SHIFT 0
#define SIIS_P_CTX_PMP 0x000001E0
#define SIIS_P_CTX_PMP_SHIFT 5
#define SIIS_P_SCTL 0x1F00
#define SIIS_P_SSTS 0x1F04
#define SIIS_P_SERR 0x1F08
#define SIIS_P_SACT 0x1F0C
#define SIIS_P_SNTF 0x1F10
#define SIIS_MAX_PORTS 4
#define SIIS_MAX_SLOTS 31
#define SIIS_OFFSET 0x100
#define SIIS_STEP 0x80
/* Pessimistic prognosis on number of required S/G entries */
#define SIIS_SG_ENTRIES (roundup(btoc(maxphys), 4) + 1)
/* Port Request Block + S/G entries. 128byte aligned. */
#define SIIS_PRB_SIZE (32 + 16 + SIIS_SG_ENTRIES * 16)
/* Total main work area. */
#define SIIS_WORK_SIZE (SIIS_PRB_SIZE * SIIS_MAX_SLOTS)
struct siis_dma_prd {
u_int64_t dba;
u_int32_t dbc;
u_int32_t control;
#define SIIS_PRD_TRM 0x80000000
#define SIIS_PRD_LNK 0x40000000
#define SIIS_PRD_DRD 0x20000000
#define SIIS_PRD_XCF 0x10000000
} __packed;
struct siis_cmd_ata {
struct siis_dma_prd prd[2];
} __packed;
struct siis_cmd_atapi {
u_int8_t ccb[16];
struct siis_dma_prd prd[1];
} __packed;
struct siis_cmd {
u_int16_t control;
#define SIIS_PRB_PROTOCOL_OVERRIDE 0x0001
#define SIIS_PRB_RETRANSMIT 0x0002
#define SIIS_PRB_EXTERNAL_COMMAND 0x0004
#define SIIS_PRB_RECEIVE 0x0008
#define SIIS_PRB_PACKET_READ 0x0010
#define SIIS_PRB_PACKET_WRITE 0x0020
#define SIIS_PRB_INTERRUPT_MASK 0x0040
#define SIIS_PRB_SOFT_RESET 0x0080
u_int16_t protocol_override;
#define SIIS_PRB_PROTO_PACKET 0x0001
#define SIIS_PRB_PROTO_TCQ 0x0002
#define SIIS_PRB_PROTO_NCQ 0x0004
#define SIIS_PRB_PROTO_READ 0x0008
#define SIIS_PRB_PROTO_WRITE 0x0010
#define SIIS_PRB_PROTO_TRANSPARENT 0x0020
u_int32_t transfer_count;
u_int8_t fis[24];
union {
struct siis_cmd_ata ata;
struct siis_cmd_atapi atapi;
} u;
} __packed;
/* misc defines */
#define ATA_IRQ_RID 0
#define ATA_INTR_FLAGS (INTR_MPSAFE|INTR_TYPE_BIO|INTR_ENTROPY)
struct ata_dmaslot {
bus_dmamap_t data_map; /* data DMA map */
int nsegs; /* Number of segs loaded */
};
/* structure holding DMA related information */
struct ata_dma {
bus_dma_tag_t work_tag; /* workspace DMA tag */
bus_dmamap_t work_map; /* workspace DMA map */
uint8_t *work; /* workspace */
bus_addr_t work_bus; /* bus address of work */
bus_dma_tag_t data_tag; /* data DMA tag */
};
enum siis_slot_states {
SIIS_SLOT_EMPTY,
SIIS_SLOT_LOADING,
SIIS_SLOT_RUNNING,
SIIS_SLOT_WAITING
};
struct siis_slot {
device_t dev; /* Device handle */
u_int8_t slot; /* Number of this slot */
enum siis_slot_states state; /* Slot state */
u_int prb_offset; /* PRB offset */
union ccb *ccb; /* CCB occupying slot */
struct ata_dmaslot dma; /* DMA data of this slot */
struct callout timeout; /* Execution timeout */
};
struct siis_device {
int revision;
int mode;
u_int bytecount;
u_int atapi;
u_int tags;
u_int caps;
};
/* structure describing an ATA channel */
struct siis_channel {
device_t dev; /* Device handle */
int unit; /* Physical channel */
struct resource *r_mem; /* Memory of this channel */
struct resource *r_irq; /* Interrupt of this channel */
void *ih; /* Interrupt handle */
struct ata_dma dma; /* DMA data */
struct cam_sim *sim;
struct cam_path *path;
struct cdev *led; /* Activity led led(4) cdev. */
int quirks;
int pm_level; /* power management level */
struct siis_slot slot[SIIS_MAX_SLOTS];
union ccb *hold[SIIS_MAX_SLOTS];
struct mtx mtx; /* state lock */
int devices; /* What is present */
int pm_present; /* PM presence reported */
uint32_t oslots; /* Occupied slots */
uint32_t rslots; /* Running slots */
uint32_t aslots; /* Slots with atomic commands */
uint32_t eslots; /* Slots in error */
uint32_t toslots; /* Slots in timeout */
int numrslots; /* Number of running slots */
int numtslots[SIIS_MAX_SLOTS]; /* Number of tagged slots */
int numhslots; /* Number of held slots */
int recoverycmd; /* Our READ LOG active */
int fatalerr; /* Fatal error happened */
int recovery; /* Some slots are in error */
union ccb *frozen; /* Frozen command */
struct siis_device user[16]; /* User-specified settings */
struct siis_device curr[16]; /* Current settings */
};
/* structure describing a SIIS controller */
struct siis_controller {
device_t dev;
int r_grid;
struct resource *r_gmem;
int r_rid;
struct resource *r_mem;
struct rman sc_iomem;
struct siis_controller_irq {
struct resource *r_irq;
void *handle;
int r_irq_rid;
} irq;
int quirks;
int channels;
uint32_t gctl;
struct {
void (*function)(void *);
void *argument;
} interrupt[SIIS_MAX_PORTS];
};
enum siis_err_type {
SIIS_ERR_NONE, /* No error */
SIIS_ERR_INVALID, /* Error detected by us before submitting. */
SIIS_ERR_INNOCENT, /* Innocent victim. */
SIIS_ERR_TFE, /* Task File Error. */
SIIS_ERR_SATA, /* SATA error. */
SIIS_ERR_TIMEOUT, /* Command execution timeout. */
SIIS_ERR_NCQ, /* NCQ command error. CCB should be put on hold
* until READ LOG executed to reveal error. */
};
/* macros to hide busspace uglyness */
#define ATA_INB(res, offset) \
bus_read_1((res), (offset))
#define ATA_INW(res, offset) \
bus_read_2((res), (offset))
#define ATA_INL(res, offset) \
bus_read_4((res), (offset))
#define ATA_INSW(res, offset, addr, count) \
bus_read_multi_2((res), (offset), (addr), (count))
#define ATA_INSW_STRM(res, offset, addr, count) \
bus_read_multi_stream_2((res), (offset), (addr), (count))
#define ATA_INSL(res, offset, addr, count) \
bus_read_multi_4((res), (offset), (addr), (count))
#define ATA_INSL_STRM(res, offset, addr, count) \
bus_read_multi_stream_4((res), (offset), (addr), (count))
#define ATA_OUTB(res, offset, value) \
bus_write_1((res), (offset), (value))
#define ATA_OUTW(res, offset, value) \
bus_write_2((res), (offset), (value))
#define ATA_OUTL(res, offset, value) \
bus_write_4((res), (offset), (value))
#define ATA_OUTSW(res, offset, addr, count) \
bus_write_multi_2((res), (offset), (addr), (count))
#define ATA_OUTSW_STRM(res, offset, addr, count) \
bus_write_multi_stream_2((res), (offset), (addr), (count))
#define ATA_OUTSL(res, offset, addr, count) \
bus_write_multi_4((res), (offset), (addr), (count))
#define ATA_OUTSL_STRM(res, offset, addr, count) \
bus_write_multi_stream_4((res), (offset), (addr), (count))
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