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Date: Tue, 03 Dec 2013 14:35:17 +0100
From: Frank Haverkamp <haver@...ux.vnet.ibm.com>
To: Greg KH <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, arnd@...db.de,
cody@...ux.vnet.ibm.com, schwidefsky@...ibm.com,
utz.bacher@...ibm.com, mmarek@...e.cz, rmallon@...il.com,
jsvogt@...ibm.com, MIJUNG@...ibm.com, cascardo@...ux.vnet.ibm.com,
michael@...ra.de
Subject: Re: [PATCH 1/6] GenWQE PCI support, health monitoring and recovery
Hi Greg,
Am Mittwoch, den 27.11.2013, 11:16 -0800 schrieb Greg KH:
> On Wed, Nov 06, 2013 at 01:45:38PM +0100, Frank Haverkamp wrote:
> > --- /dev/null
> > +++ b/include/linux/genwqe/genwqe_card.h
> > @@ -0,0 +1,547 @@
> > +#ifndef __GENWQE_CARD_H__
> > +#define __GENWQE_CARD_H__
> > +
> > +/**
> > + * IBM Accelerator Family 'GenWQE'
> > + *
> > + * (C) Copyright IBM Corp. 2013
> > + *
> > + * Author: Frank Haverkamp <haver@...ux.vnet.ibm.com>
> > + * Author: Joerg-Stephan Vogt <jsvogt@...ibm.com>
> > + * Author: Michael Jung <mijung@...ibm.com>
> > + * Author: Michael Ruettger <michael@...ra.de>
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of the GNU General Public License (version 2 only)
> > + * as published by the Free Software Foundation.
> > + *
> > + * This program is distributed in the hope that it will be useful,
> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + * GNU General Public License for more details.
> > + */
> > +
> > +/*
> > + * User-space API for the GenWQE card. For debugging and test purposes
> > + * the register addresses are included here too.
> > + */
> > +
> > +#ifdef __KERNEL__
> > +# include <linux/types.h>
> > +# include <linux/ioctl.h>
> > +#else
> > +# include <stdint.h>
> > +# include <asm/ioctl.h>
> > +# include <stddef.h>
> > +# include <string.h>
> > +#
> > +# ifndef __user
> > +# define __user
> > +# endif
> > +#endif
>
> Ick, really?
Yes, looks ugly. I got rid of that.
>
> Anyway, userspace .h files need to be in include/uapi/, not in
> include/linux/, please split only the userspace side of this file out to
> that directory, the other bits that do not need to go to userspace can
> probably go back down in your local directory, right?
Sure. I moved the file over, found some constants/struct names with
sub-optimal prefixes, and fixed those too.
>
> > +
> > +/* Basename of sysfs, debugfs and /dev interfaces */
> > +#define GENWQE_DEVNAME "genwqe"
> > +
> > +#define GENWQE_TYPE_ALTERA_230 0x00 /* GenWQE4 Stratix-IV-230 */
> > +#define GENWQE_TYPE_ALTERA_530 0x01 /* GenWQE4 Stratix-IV-530 */
> > +#define GENWQE_TYPE_ALTERA_A4 0x02 /* GenWQE5 A4 Stratix-V-A4 */
> > +#define GENWQE_TYPE_ALTERA_A7 0x03 /* GenWQE5 A7 Stratix-V-A7 */
> > +
> > +/* MMIO Unit offsets: Each UnitID occupies a defined address range */
> > +#define UID_OFFS(uid) ((uid) << 24)
> > +
> > +#define SLU_OFFS UID_OFFS(0)
> > +#define HSU_OFFS UID_OFFS(1)
> > +#define APP_OFFS UID_OFFS(2)
> > +#define MEMC0_OFFS UID_OFFS(3)
> > +#define MEMC1_OFFS UID_OFFS(4)
> > +#define ETH0_OFFS UID_OFFS(5)
> > +#define ETH1_OFFS UID_OFFS(6)
> > +#define GENWQE_MAX_UNITS 3
> > +
> > +/* Common offsets per UnitID */
> > +#define IO_EXTENDED_ERROR_POINTER 0x00000048
> > +#define IO_ERROR_INJECT_SELECTOR 0x00000060
> > +#define IO_EXTENDED_DIAG_SELECTOR 0x00000070
> > +#define IO_EXTENDED_DIAG_READ_MBX 0x00000078
> > +#define IO_EXTENDED_DIAG_MAP(ring) (0x00000500 | ((ring) << 3))
> > +
> > +#define EXTENDED_DIAG_SELECTOR(ring, trace) (((ring) << 8) | (trace))
> > +
> > +/* UnitID 0: Service Layer Unit (SLU) */
> > +
> > +/* SLU: Unit Configuration Register */
> > +#define IO_SLU_UNITCFG 0x00000000
> > +#define SLU_UNITCFG_TYPE_MASK 0x000000000ff00000 /* 27:20 */
> > +
> > +/* SLU: Fault Isolation Register (FIR) (ac_slu_fir) */
> > +#define IO_SLU_FIR 0x00000008 /* read only, wr direct */
> > +#define IO_SLU_FIR_CLR 0x00000010 /* read and clear */
> > +
> > +/* SLU: First Error Capture Register (FEC/WOF) */
> > +#define IO_SLU_FEC 0x00000018
> > +
> > +#define IO_SLU_ERR_ACT_MASK 0x00000020
> > +#define IO_SLU_ERR_ATTN_MASK 0x00000028
> > +#define IO_SLU_FIRX1_ACT_MASK 0x00000030
> > +#define IO_SLU_FIRX0_ACT_MASK 0x00000038
> > +#define IO_SLU_SEC_LEM_DEBUG_OVR 0x00000040
> > +#define IO_SLU_EXTENDED_ERR_PTR 0x00000048
> > +#define IO_SLU_COMMON_CONFIG 0x00000060
> > +
> > +/* SLU: Flash FIR */
> > +#define IO_SLU_FLASH_FIR 0x00000108
> > +
> > +/* SLU: SLC FIR (This section needs to be updated for A5) */
> > +#define IO_SLU_SLC_FIR 0x00000110
> > +
> > +/* SLU: RIU Secondary Trap Register */
> > +#define IO_SLU_RIU_TRAP 0x00000280
> > +
> > +/* SLU: Flash FEC */
> > +#define IO_SLU_FLASH_FEC 0x00000308
> > +
> > +/* SLU: SLC secondary FEC */
> > +#define IO_SLU_SLC_FEC 0x00000310
> > +
> > +#define W1CLR_OFFS 0x00400000
> > +#define W1SET_OFFS 0x00800000
> > +
> > +/*
> > + * The Virtual Function's Access is from offset 0x00010000
> > + * The Physical Function's Access is from offset 0x00050000
> > + * Single Shared Registers exists only at offset 0x00060000
> > + */
> > +
> > +/*
> > + * SLC: Queue Virtual Window Window for accessing into a specific VF
> > + * queue. When accessing the 0x10000 space using the 0x50000 address
> > + * segment, the value indicated here is used to specify which VF
> > + * register is decoded. This register, and the 0x50000 register space
> > + * can only be accessed by the PF. Example, if this register is set to
> > + * 0x2, then a read from 0x50000 is the same as a read from 0x10000
> > + * from VF=2.
> > + */
> > +
> > +/* SLC: Queue Segment */
> > +#define IO_SLC_QUEUE_SEGMENT 0x00010000
> > +#define IO_SLC_VF_QUEUE_SEGMENT 0x00050000
> > +
> > +/* SLC: Queue Offset */
> > +#define IO_SLC_QUEUE_OFFSET 0x00010008
> > +#define IO_SLC_VF_QUEUE_OFFSET 0x00050008
> > +
> > +/* SLC: Queue Configuration */
> > +#define IO_SLC_QUEUE_CONFIG 0x00010010
> > +#define IO_SLC_VF_QUEUE_CONFIG 0x00050010
> > +
> > +/* SLC: Job Timout/Only accessible for the PF */
> > +#define IO_SLC_APPJOB_TIMEOUT 0x00010018
> > +#define IO_SLC_VF_APPJOB_TIMEOUT 0x00050018
> > +#define TIMEOUT_250MS 0x0000000full
> > +#define HEARTBEAT_DISABLE 0x0000ff00ull
> > +
> > +/* SLC: Queue InitSequence Register */
> > +#define IO_SLC_QUEUE_INITSQN 0x00010020
> > +#define IO_SLC_VF_QUEUE_INITSQN 0x00050020
> > +
> > +/* SLC: Queue Wrap */
> > +#define IO_SLC_QUEUE_WRAP 0x00010028
> > +#define IO_SLC_VF_QUEUE_WRAP 0x00050028
> > +
> > +/* SLC: Queue Status */
> > +#define IO_SLC_QUEUE_STATUS 0x00010100
> > +#define IO_SLC_VF_QUEUE_STATUS 0x00050100
> > +
> > +/* SLC: Queue Working Time */
> > +#define IO_SLC_QUEUE_WTIME 0x00010030
> > +#define IO_SLC_VF_QUEUE_WTIME 0x00050030
> > +
> > +/* SLC: Queue Error Counts */
> > +#define IO_SLC_QUEUE_ERRCNTS 0x00010038
> > +#define IO_SLC_VF_QUEUE_ERRCNTS 0x00050038
> > +
> > +/* SLC: Queue Loast Response Word */
> > +#define IO_SLC_QUEUE_LRW 0x00010040
> > +#define IO_SLC_VF_QUEUE_LRW 0x00050040
> > +
> > +/* SLC: Freerunning Timer */
> > +#define IO_SLC_FREE_RUNNING_TIMER 0x00010108
> > +#define IO_SLC_VF_FREE_RUNNING_TIMER 0x00050108
> > +
> > +/* SLC: Queue Virtual Access Region */
> > +#define IO_PF_SLC_VIRTUAL_REGION 0x00050000
> > +
> > +/* SLC: Queue Virtual Window */
> > +#define IO_PF_SLC_VIRTUAL_WINDOW 0x00060000
> > +
> > +/* SLC: DDCB Application Job Pending [n] (n=0:63) */
> > +#define IO_PF_SLC_JOBPEND(n) (0x00061000 + 8*(n))
> > +#define IO_SLC_JOBPEND(n) IO_PF_SLC_JOBPEND(n)
> > +
> > +/* SLC: Parser Trap RAM [n] (n=0:31) */
> > +#define IO_SLU_SLC_PARSE_TRAP(n) (0x00011000 + 8*(n))
> > +
> > +/* SLC: Dispatcher Trap RAM [n] (n=0:31) */
> > +#define IO_SLU_SLC_DISP_TRAP(n) (0x00011200 + 8*(n))
> > +
> > +/* Global Fault Isolation Register (GFIR) */
> > +#define IO_SLC_CFGREG_GFIR 0x00020000
> > +#define GFIR_ERR_TRIGGER 0x000000000000ffffull
> > +
> > +/* SLU: Soft Reset Register */
> > +#define IO_SLC_CFGREG_SOFTRESET 0x00020018
> > +
> > +/* SLU: Misc Debug Register */
> > +#define IO_SLC_MISC_DEBUG 0x00020060
> > +#define IO_SLC_MISC_DEBUG_CLR 0x00020068
> > +#define IO_SLC_MISC_DEBUG_SET 0x00020070
> > +
> > +/* Temperature Sensor Reading */
> > +#define IO_SLU_TEMPERATURE_SENSOR 0x00030000
> > +#define IO_SLU_TEMPERATURE_CONFIG 0x00030008
> > +
> > +/* Voltage Margining Control */
> > +#define IO_SLU_VOLTAGE_CONTROL 0x00030080
> > +#define VOLTAGE_NOMINAL 0x00000000ull
> > +#define VOLTAGE_DOWN5 0x00000006ull
> > +#define VOLTAGE_UP5 0x00000007ull
> > +
> > +/* Direct LED Control Register */
> > +#define IO_SLU_LEDCONTROL 0x00030100
> > +
> > +/* SLU: Flashbus Direct Access -A5 */
> > +#define IO_SLU_FLASH_DIRECTACCESS 0x00040010
> > +
> > +/* SLU: Flashbus Direct Access2 -A5 */
> > +#define IO_SLU_FLASH_DIRECTACCESS2 0x00040020
> > +
> > +/* SLU: Flashbus Command Interface -A5 */
> > +#define IO_SLU_FLASH_CMDINTF 0x00040030
> > +
> > +/* SLU: BitStream Loaded */
> > +#define IO_SLU_BITSTREAM 0x00040040
> > +
> > +/* This Register has a switch which will change the CAs to UR */
> > +#define IO_HSU_ERR_BEHAVIOR 0x01001010
> > +
> > +#define IO_SLC2_SQB_TRAP 0x00062000
> > +#define IO_SLC2_QUEUE_MANAGER_TRAP 0x00062008
> > +#define IO_SLC2_FLS_MASTER_TRAP 0x00062010
> > +
> > +/* UnitID 1: HSU Registers */
> > +#define IO_HSU_UNITCFG 0x01000000
> > +#define IO_HSU_FIR 0x01000008
> > +#define IO_HSU_FIR_CLR 0x01000010
> > +#define IO_HSU_FEC 0x01000018
> > +#define IO_HSU_ERR_ACT_MASK 0x01000020
> > +#define IO_HSU_ERR_ATTN_MASK 0x01000028
> > +#define IO_HSU_FIRX1_ACT_MASK 0x01000030
> > +#define IO_HSU_FIRX0_ACT_MASK 0x01000038
> > +#define IO_HSU_SEC_LEM_DEBUG_OVR 0x01000040
> > +#define IO_HSU_EXTENDED_ERR_PTR 0x01000048
> > +#define IO_HSU_COMMON_CONFIG 0x01000060
> > +
> > +/* UnitID 2: Application Unit (APP) */
> > +#define IO_APP_UNITCFG 0x02000000
> > +#define IO_APP_FIR 0x02000008
> > +#define IO_APP_FIR_CLR 0x02000010
> > +#define IO_APP_FEC 0x02000018
> > +#define IO_APP_ERR_ACT_MASK 0x02000020
> > +#define IO_APP_ERR_ATTN_MASK 0x02000028
> > +#define IO_APP_FIRX1_ACT_MASK 0x02000030
> > +#define IO_APP_FIRX0_ACT_MASK 0x02000038
> > +#define IO_APP_SEC_LEM_DEBUG_OVR 0x02000040
> > +#define IO_APP_EXTENDED_ERR_PTR 0x02000048
> > +#define IO_APP_COMMON_CONFIG 0x02000060
> > +
> > +#define IO_APP_DEBUG_REG_01 0x02010000
> > +#define IO_APP_DEBUG_REG_02 0x02010008
> > +#define IO_APP_DEBUG_REG_03 0x02010010
> > +#define IO_APP_DEBUG_REG_04 0x02010018
> > +#define IO_APP_DEBUG_REG_05 0x02010020
> > +#define IO_APP_DEBUG_REG_06 0x02010028
> > +#define IO_APP_DEBUG_REG_07 0x02010030
> > +#define IO_APP_DEBUG_REG_08 0x02010038
> > +#define IO_APP_DEBUG_REG_09 0x02010040
> > +#define IO_APP_DEBUG_REG_10 0x02010048
> > +#define IO_APP_DEBUG_REG_11 0x02010050
> > +#define IO_APP_DEBUG_REG_12 0x02010058
> > +#define IO_APP_DEBUG_REG_13 0x02010060
> > +#define IO_APP_DEBUG_REG_14 0x02010068
> > +#define IO_APP_DEBUG_REG_15 0x02010070
> > +#define IO_APP_DEBUG_REG_16 0x02010078
> > +#define IO_APP_DEBUG_REG_17 0x02010080
> > +#define IO_APP_DEBUG_REG_18 0x02010088
> > +
> > +/* Read/write from/to registers */
> > +struct regs_io {
> > + uint32_t num; /* register offset/address */
> > + union {
> > + uint64_t val64;
> > + uint32_t val32;
> > + uint16_t define;
> > + };
> > +};
>
> For all of your userspace structures, they need to use proper variable
> types. For a unsigned 32 bit number, that would be __u32. Please fix
> up all of your structures for that.
Fixed them.
>
> Also, have you properly audited the structures for 32bit user / 64bit
> kernel issues?
As you point out below, I failed doing so ;-).
>
> > +/* common struct for chip image exchange */
> > +struct chip_bitstream {
> > + uint8_t __user *pdata; /* pointer to image data */
> > + int size; /* size of image file */
>
> I think this fails the 32/64bit issue, right?
Yes. I replaced those by something like
__u32 data_addr;
I hope that is fixing the 32/64bit issue.
> thanks,
>
> greg k-h
>
Thanks
Frank
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