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drivers/block: remove the umem driver

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This removes the driver on the premise that it has been unused for a long
time. This is a better approach compared to changing untestable code
nobody cares about in the first place. Similarly, the umem.com website now
shows a mere Godaddy parking add.

Acked-by: NeilBrown <neilb@suse.de>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Davidlohr Bueso 2021-03-23 12:07:10 -07:00 committed by Jens Axboe
parent f66116f7b2
commit 14d9762244
7 changed files with 0 additions and 1283 deletions
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1
arch/mips/configs/malta_defconfig
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@ -227,7 +227,6 @@ CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_UBI=m
CONFIG_MTD_UBI_GLUEBI=m
CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_UMEM=m
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m

1
arch/mips/configs/malta_kvm_defconfig
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@ -232,7 +232,6 @@ CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_UBI=m
CONFIG_MTD_UBI_GLUEBI=m
CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_UMEM=m
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m

1
arch/mips/configs/maltaup_xpa_defconfig
View File

@ -230,7 +230,6 @@ CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_UBI=m
CONFIG_MTD_UBI_GLUEBI=m
CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_UMEM=m
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m

17
drivers/block/Kconfig
View File

@ -121,23 +121,6 @@ source "drivers/block/mtip32xx/Kconfig"
source "drivers/block/zram/Kconfig"
config BLK_DEV_UMEM
tristate "Micro Memory MM5415 Battery Backed RAM support"
depends on PCI
help
Saying Y here will include support for the MM5415 family of
battery backed (Non-volatile) RAM cards.
<http://www.umem.com/>
The cards appear as block devices that can be partitioned into
as many as 15 partitions.
To compile this driver as a module, choose M here: the
module will be called umem.
The umem driver has not yet been allocated a MAJOR number, so
one is chosen dynamically.
config BLK_DEV_UBD
bool "Virtual block device"
depends on UML

1
drivers/block/Makefile
View File

@ -23,7 +23,6 @@ obj-$(CONFIG_BLK_DEV_LOOP) += loop.o
obj-$(CONFIG_CDROM_PKTCDVD) += pktcdvd.o
obj-$(CONFIG_SUNVDC) += sunvdc.o
obj-$(CONFIG_BLK_DEV_UMEM) += umem.o
obj-$(CONFIG_BLK_DEV_NBD) += nbd.o
obj-$(CONFIG_BLK_DEV_CRYPTOLOOP) += cryptoloop.o
obj-$(CONFIG_VIRTIO_BLK) += virtio_blk.o

1130
drivers/block/umem.c
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File diff suppressed because it is too large Load Diff

132
drivers/block/umem.h
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@ -1,132 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* This file contains defines for the
* Micro Memory MM5415
* family PCI Memory Module with Battery Backup.
*
* Copyright Micro Memory INC 2001. All rights reserved.
*/
#ifndef _DRIVERS_BLOCK_MM_H
#define _DRIVERS_BLOCK_MM_H
#define IRQ_TIMEOUT (1 * HZ)
/* CSR register definition */
#define MEMCTRLSTATUS_MAGIC 0x00
#define MM_MAGIC_VALUE (unsigned char)0x59
#define MEMCTRLSTATUS_BATTERY 0x04
#define BATTERY_1_DISABLED 0x01
#define BATTERY_1_FAILURE 0x02
#define BATTERY_2_DISABLED 0x04
#define BATTERY_2_FAILURE 0x08
#define MEMCTRLSTATUS_MEMORY 0x07
#define MEM_128_MB 0xfe
#define MEM_256_MB 0xfc
#define MEM_512_MB 0xf8
#define MEM_1_GB 0xf0
#define MEM_2_GB 0xe0
#define MEMCTRLCMD_LEDCTRL 0x08
#define LED_REMOVE 2
#define LED_FAULT 4
#define LED_POWER 6
#define LED_FLIP 255
#define LED_OFF 0x00
#define LED_ON 0x01
#define LED_FLASH_3_5 0x02
#define LED_FLASH_7_0 0x03
#define LED_POWER_ON 0x00
#define LED_POWER_OFF 0x01
#define USER_BIT1 0x01
#define USER_BIT2 0x02
#define MEMORY_INITIALIZED USER_BIT1
#define MEMCTRLCMD_ERRCTRL 0x0C
#define EDC_NONE_DEFAULT 0x00
#define EDC_NONE 0x01
#define EDC_STORE_READ 0x02
#define EDC_STORE_CORRECT 0x03
#define MEMCTRLCMD_ERRCNT 0x0D
#define MEMCTRLCMD_ERRSTATUS 0x0E
#define ERROR_DATA_LOG 0x20
#define ERROR_ADDR_LOG 0x28
#define ERROR_COUNT 0x3D
#define ERROR_SYNDROME 0x3E
#define ERROR_CHECK 0x3F
#define DMA_PCI_ADDR 0x40
#define DMA_LOCAL_ADDR 0x48
#define DMA_TRANSFER_SIZE 0x50
#define DMA_DESCRIPTOR_ADDR 0x58
#define DMA_SEMAPHORE_ADDR 0x60
#define DMA_STATUS_CTRL 0x68
#define DMASCR_GO 0x00001
#define DMASCR_TRANSFER_READ 0x00002
#define DMASCR_CHAIN_EN 0x00004
#define DMASCR_SEM_EN 0x00010
#define DMASCR_DMA_COMP_EN 0x00020
#define DMASCR_CHAIN_COMP_EN 0x00040
#define DMASCR_ERR_INT_EN 0x00080
#define DMASCR_PARITY_INT_EN 0x00100
#define DMASCR_ANY_ERR 0x00800
#define DMASCR_MBE_ERR 0x01000
#define DMASCR_PARITY_ERR_REP 0x02000
#define DMASCR_PARITY_ERR_DET 0x04000
#define DMASCR_SYSTEM_ERR_SIG 0x08000
#define DMASCR_TARGET_ABT 0x10000
#define DMASCR_MASTER_ABT 0x20000
#define DMASCR_DMA_COMPLETE 0x40000
#define DMASCR_CHAIN_COMPLETE 0x80000
/*
3.SOME PCs HAVE HOST BRIDGES WHICH APPARENTLY DO NOT CORRECTLY HANDLE
READ-LINE (0xE) OR READ-MULTIPLE (0xC) PCI COMMAND CODES DURING DMA
TRANSFERS. IN OTHER SYSTEMS THESE COMMAND CODES WILL CAUSE THE HOST BRIDGE
TO ALLOW LONGER BURSTS DURING DMA READ OPERATIONS. THE UPPER FOUR BITS
(31..28) OF THE DMA CSR HAVE BEEN MADE PROGRAMMABLE, SO THAT EITHER A 0x6,
AN 0xE OR A 0xC CAN BE WRITTEN TO THEM TO SET THE COMMAND CODE USED DURING
DMA READ OPERATIONS.
*/
#define DMASCR_READ 0x60000000
#define DMASCR_READLINE 0xE0000000
#define DMASCR_READMULTI 0xC0000000
#define DMASCR_ERROR_MASK (DMASCR_MASTER_ABT | DMASCR_TARGET_ABT | DMASCR_SYSTEM_ERR_SIG | DMASCR_PARITY_ERR_DET | DMASCR_MBE_ERR | DMASCR_ANY_ERR)
#define DMASCR_HARD_ERROR (DMASCR_MASTER_ABT | DMASCR_TARGET_ABT | DMASCR_SYSTEM_ERR_SIG | DMASCR_PARITY_ERR_DET | DMASCR_MBE_ERR)
#define WINDOWMAP_WINNUM 0x7B
#define DMA_READ_FROM_HOST 0
#define DMA_WRITE_TO_HOST 1
struct mm_dma_desc {
__le64 pci_addr;
__le64 local_addr;
__le32 transfer_size;
u32 zero1;
__le64 next_desc_addr;
__le64 sem_addr;
__le32 control_bits;
u32 zero2;
dma_addr_t data_dma_handle;
/* Copy of the bits */
__le64 sem_control_bits;
} __attribute__((aligned(8)));
/* bits for card->flags */
#define UM_FLAG_DMA_IN_REGS 1
#define UM_FLAG_NO_BYTE_STATUS 2
#define UM_FLAG_NO_BATTREG 4
#define UM_FLAG_NO_BATT 8
#endif