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提交 da19d2f5 编写于 作者: J James Bottomley
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[SCSI] dec_esp: Remove driver 

This driver depends on the deprecated NCR53C9X core and needs to be converted
to the esp_scsi core.
Acked-by: NBoaz Harrosh <bharrosh@panasas.com>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
上级 14f501a4
隐藏空白更改
内联 并排
Showing with 0 addition and 699 deletion
drivers/scsi/Kconfig
浏览文件 @ da19d2f5
......@@ -350,17 +350,6 @@ config SGIWD93_SCSI
If you have a Western Digital WD93 SCSI controller on
an SGI MIPS system, say Y. Otherwise, say N.
config SCSI_DECNCR
tristate "DEC NCR53C94 Scsi Driver"
depends on MACH_DECSTATION && SCSI && TC
help
Say Y here to support the NCR53C94 SCSI controller chips on IOASIC
based TURBOchannel DECstations and TURBOchannel PMAZ-A cards.
config SCSI_DECSII
tristate "DEC SII Scsi Driver"
depends on MACH_DECSTATION && SCSI && 32BIT
config BLK_DEV_3W_XXXX_RAID
tristate "3ware 5/6/7/8xxx ATA-RAID support"
depends on PCI && SCSI
......
drivers/scsi/Makefile
浏览文件 @ da19d2f5
......@@ -111,7 +111,6 @@ obj-$(CONFIG_SCSI_QLOGICPTI) += qlogicpti.o
obj-$(CONFIG_BLK_DEV_IDESCSI) += ide-scsi.o
obj-$(CONFIG_SCSI_MESH) += mesh.o
obj-$(CONFIG_SCSI_MAC53C94) += mac53c94.o
obj-$(CONFIG_SCSI_DECNCR) += NCR53C9x.o dec_esp.o
obj-$(CONFIG_BLK_DEV_3W_XXXX_RAID) += 3w-xxxx.o
obj-$(CONFIG_SCSI_3W_9XXX) += 3w-9xxx.o
obj-$(CONFIG_SCSI_PPA) += ppa.o
......
drivers/scsi/dec_esp.c 已删除 100644 → 0
浏览文件 @ 14f501a4
/*
* dec_esp.c: Driver for SCSI chips on IOASIC based TURBOchannel DECstations
* and TURBOchannel PMAZ-A cards
*
* TURBOchannel changes by Harald Koerfgen
* PMAZ-A support by David Airlie
*
* based on jazz_esp.c:
* Copyright (C) 1997 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
*
* jazz_esp is based on David S. Miller's ESP driver and cyber_esp
*
* 20000819 - Small PMAZ-AA fixes by Florian Lohoff <flo@rfc822.org>
* Be warned the PMAZ-AA works currently as a single card.
* Dont try to put multiple cards in one machine - They are
* both detected but it may crash under high load garbling your
* data.
* 20001005 - Initialization fixes for 2.4.0-test9
* Florian Lohoff <flo@rfc822.org>
*
* Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki
*/
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include <linux/stat.h>
#include <linux/tc.h>
#include <asm/dma.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/system.h>
#include <asm/dec/interrupts.h>
#include <asm/dec/ioasic.h>
#include <asm/dec/ioasic_addrs.h>
#include <asm/dec/ioasic_ints.h>
#include <asm/dec/machtype.h>
#include <asm/dec/system.h>
#define DEC_SCSI_SREG 0
#define DEC_SCSI_DMAREG 0x40000
#define DEC_SCSI_SRAM 0x80000
#define DEC_SCSI_DIAG 0xC0000
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "NCR53C9x.h"
static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
static void dma_drain(struct NCR_ESP *esp);
static int dma_can_transfer(struct NCR_ESP *esp, struct scsi_cmnd *sp);
static void dma_dump_state(struct NCR_ESP *esp);
static void dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length);
static void dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length);
static void dma_ints_off(struct NCR_ESP *esp);
static void dma_ints_on(struct NCR_ESP *esp);
static int dma_irq_p(struct NCR_ESP *esp);
static int dma_ports_p(struct NCR_ESP *esp);
static void dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write);
static void dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp);
static void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, struct scsi_cmnd * sp);
static void dma_advance_sg(struct scsi_cmnd * sp);
static void pmaz_dma_drain(struct NCR_ESP *esp);
static void pmaz_dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length);
static void pmaz_dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length);
static void pmaz_dma_ints_off(struct NCR_ESP *esp);
static void pmaz_dma_ints_on(struct NCR_ESP *esp);
static void pmaz_dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write);
static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp);
#define TC_ESP_RAM_SIZE 0x20000
#define ESP_TGT_DMA_SIZE ((TC_ESP_RAM_SIZE/7) & ~(sizeof(int)-1))
#define ESP_NCMD 7
#define TC_ESP_DMAR_MASK 0x1ffff
#define TC_ESP_DMAR_WRITE 0x80000000
#define TC_ESP_DMA_ADDR(x) ((unsigned)(x) & TC_ESP_DMAR_MASK)
u32 esp_virt_buffer;
int scsi_current_length;
volatile unsigned char cmd_buffer[16];
volatile unsigned char pmaz_cmd_buffer[16];
/* This is where all commands are put
* before they are trasfered to the ESP chip
* via PIO.
*/
static irqreturn_t scsi_dma_merr_int(int, void *);
static irqreturn_t scsi_dma_err_int(int, void *);
static irqreturn_t scsi_dma_int(int, void *);
static struct scsi_host_template dec_esp_template = {
.module = THIS_MODULE,
.name = "NCR53C94",
.info = esp_info,
.queuecommand = esp_queue,
.eh_abort_handler = esp_abort,
.eh_bus_reset_handler = esp_reset,
.slave_alloc = esp_slave_alloc,
.slave_destroy = esp_slave_destroy,
.proc_info = esp_proc_info,
.proc_name = "dec_esp",
.can_queue = 7,
.sg_tablesize = SG_ALL,
.cmd_per_lun = 1,
.use_clustering = DISABLE_CLUSTERING,
};
static struct NCR_ESP *dec_esp_platform;
/***************************************************************** Detection */
static int dec_esp_platform_probe(void)
{
struct NCR_ESP *esp;
int err = 0;
if (IOASIC) {
esp = esp_allocate(&dec_esp_template, NULL, 1);
/* Do command transfer with programmed I/O */
esp->do_pio_cmds = 1;
/* Required functions */
esp->dma_bytes_sent = &dma_bytes_sent;
esp->dma_can_transfer = &dma_can_transfer;
esp->dma_dump_state = &dma_dump_state;
esp->dma_init_read = &dma_init_read;
esp->dma_init_write = &dma_init_write;
esp->dma_ints_off = &dma_ints_off;
esp->dma_ints_on = &dma_ints_on;
esp->dma_irq_p = &dma_irq_p;
esp->dma_ports_p = &dma_ports_p;
esp->dma_setup = &dma_setup;
/* Optional functions */
esp->dma_barrier = 0;
esp->dma_drain = &dma_drain;
esp->dma_invalidate = 0;
esp->dma_irq_entry = 0;
esp->dma_irq_exit = 0;
esp->dma_poll = 0;
esp->dma_reset = 0;
esp->dma_led_off = 0;
esp->dma_led_on = 0;
/* virtual DMA functions */
esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one;
esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl;
esp->dma_mmu_release_scsi_one = 0;
esp->dma_mmu_release_scsi_sgl = 0;
esp->dma_advance_sg = &dma_advance_sg;
/* SCSI chip speed */
esp->cfreq = 25000000;
esp->dregs = 0;
/* ESP register base */
esp->eregs = (void *)CKSEG1ADDR(dec_kn_slot_base +
IOASIC_SCSI);
/* Set the command buffer */
esp->esp_command = (volatile unsigned char *) cmd_buffer;
/* get virtual dma address for command buffer */
esp->esp_command_dvma = virt_to_phys(cmd_buffer);
esp->irq = dec_interrupt[DEC_IRQ_ASC];
esp->scsi_id = 7;
/* Check for differential SCSI-bus */
esp->diff = 0;
err = request_irq(esp->irq, esp_intr, IRQF_DISABLED,
"ncr53c94", esp->ehost);
if (err)
goto err_alloc;
err = request_irq(dec_interrupt[DEC_IRQ_ASC_MERR],
scsi_dma_merr_int, IRQF_DISABLED,
"ncr53c94 error", esp->ehost);
if (err)
goto err_irq;
err = request_irq(dec_interrupt[DEC_IRQ_ASC_ERR],
scsi_dma_err_int, IRQF_DISABLED,
"ncr53c94 overrun", esp->ehost);
if (err)
goto err_irq_merr;
err = request_irq(dec_interrupt[DEC_IRQ_ASC_DMA], scsi_dma_int,
IRQF_DISABLED, "ncr53c94 dma", esp->ehost);
if (err)
goto err_irq_err;
esp_initialize(esp);
err = scsi_add_host(esp->ehost, NULL);
if (err) {
printk(KERN_ERR "ESP: Unable to register adapter\n");
goto err_irq_dma;
}
scsi_scan_host(esp->ehost);
dec_esp_platform = esp;
}
return 0;
err_irq_dma:
free_irq(dec_interrupt[DEC_IRQ_ASC_DMA], esp->ehost);
err_irq_err:
free_irq(dec_interrupt[DEC_IRQ_ASC_ERR], esp->ehost);
err_irq_merr:
free_irq(dec_interrupt[DEC_IRQ_ASC_MERR], esp->ehost);
err_irq:
free_irq(esp->irq, esp->ehost);
err_alloc:
esp_deallocate(esp);
scsi_host_put(esp->ehost);
return err;
}
static int __init dec_esp_probe(struct device *dev)
{
struct NCR_ESP *esp;
resource_size_t start, len;
int err;
esp = esp_allocate(&dec_esp_template, NULL, 1);
dev_set_drvdata(dev, esp);
start = to_tc_dev(dev)->resource.start;
len = to_tc_dev(dev)->resource.end - start + 1;
if (!request_mem_region(start, len, dev->bus_id)) {
printk(KERN_ERR "%s: Unable to reserve MMIO resource\n",
dev->bus_id);
err = -EBUSY;
goto err_alloc;
}
/* Store base addr into esp struct. */
esp->slot = start;
esp->dregs = 0;
esp->eregs = (void *)CKSEG1ADDR(start + DEC_SCSI_SREG);
esp->do_pio_cmds = 1;
/* Set the command buffer. */
esp->esp_command = (volatile unsigned char *)pmaz_cmd_buffer;
/* Get virtual dma address for command buffer. */
esp->esp_command_dvma = virt_to_phys(pmaz_cmd_buffer);
esp->cfreq = tc_get_speed(to_tc_dev(dev)->bus);
esp->irq = to_tc_dev(dev)->interrupt;
/* Required functions. */
esp->dma_bytes_sent = &dma_bytes_sent;
esp->dma_can_transfer = &dma_can_transfer;
esp->dma_dump_state = &dma_dump_state;
esp->dma_init_read = &pmaz_dma_init_read;
esp->dma_init_write = &pmaz_dma_init_write;
esp->dma_ints_off = &pmaz_dma_ints_off;
esp->dma_ints_on = &pmaz_dma_ints_on;
esp->dma_irq_p = &dma_irq_p;
esp->dma_ports_p = &dma_ports_p;
esp->dma_setup = &pmaz_dma_setup;
/* Optional functions. */
esp->dma_barrier = 0;
esp->dma_drain = &pmaz_dma_drain;
esp->dma_invalidate = 0;
esp->dma_irq_entry = 0;
esp->dma_irq_exit = 0;
esp->dma_poll = 0;
esp->dma_reset = 0;
esp->dma_led_off = 0;
esp->dma_led_on = 0;
esp->dma_mmu_get_scsi_one = pmaz_dma_mmu_get_scsi_one;
esp->dma_mmu_get_scsi_sgl = 0;
esp->dma_mmu_release_scsi_one = 0;
esp->dma_mmu_release_scsi_sgl = 0;
esp->dma_advance_sg = 0;
err = request_irq(esp->irq, esp_intr, IRQF_DISABLED, "PMAZ_AA",
esp->ehost);
if (err) {
printk(KERN_ERR "%s: Unable to get IRQ %d\n",
dev->bus_id, esp->irq);
goto err_resource;
}
esp->scsi_id = 7;
esp->diff = 0;
esp_initialize(esp);
err = scsi_add_host(esp->ehost, dev);
if (err) {
printk(KERN_ERR "%s: Unable to register adapter\n",
dev->bus_id);
goto err_irq;
}
scsi_scan_host(esp->ehost);
return 0;
err_irq:
free_irq(esp->irq, esp->ehost);
err_resource:
release_mem_region(start, len);
err_alloc:
esp_deallocate(esp);
scsi_host_put(esp->ehost);
return err;
}
static void __exit dec_esp_platform_remove(void)
{
struct NCR_ESP *esp = dec_esp_platform;
free_irq(esp->irq, esp->ehost);
esp_deallocate(esp);
scsi_host_put(esp->ehost);
dec_esp_platform = NULL;
}
static void __exit dec_esp_remove(struct device *dev)
{
struct NCR_ESP *esp = dev_get_drvdata(dev);
free_irq(esp->irq, esp->ehost);
esp_deallocate(esp);
scsi_host_put(esp->ehost);
}
/************************************************************* DMA Functions */
static irqreturn_t scsi_dma_merr_int(int irq, void *dev_id)
{
printk("Got unexpected SCSI DMA Interrupt! < ");
printk("SCSI_DMA_MEMRDERR ");
printk(">\n");
return IRQ_HANDLED;
}
static irqreturn_t scsi_dma_err_int(int irq, void *dev_id)
{
/* empty */
return IRQ_HANDLED;
}
static irqreturn_t scsi_dma_int(int irq, void *dev_id)
{
u32 scsi_next_ptr;
scsi_next_ptr = ioasic_read(IO_REG_SCSI_DMA_P);
/* next page */
scsi_next_ptr = (((scsi_next_ptr >> 3) + PAGE_SIZE) & PAGE_MASK) << 3;
ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
fast_iob();
return IRQ_HANDLED;
}
static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
{
return fifo_count;
}
static void dma_drain(struct NCR_ESP *esp)
{
u32 nw, data0, data1, scsi_data_ptr;
u16 *p;
nw = ioasic_read(IO_REG_SCSI_SCR);
/*
* Is there something in the dma buffers left?
*/
if (nw) {
scsi_data_ptr = ioasic_read(IO_REG_SCSI_DMA_P) >> 3;
p = phys_to_virt(scsi_data_ptr);
switch (nw) {
case 1:
data0 = ioasic_read(IO_REG_SCSI_SDR0);
p[0] = data0 & 0xffff;
break;
case 2:
data0 = ioasic_read(IO_REG_SCSI_SDR0);
p[0] = data0 & 0xffff;
p[1] = (data0 >> 16) & 0xffff;
break;
case 3:
data0 = ioasic_read(IO_REG_SCSI_SDR0);
data1 = ioasic_read(IO_REG_SCSI_SDR1);
p[0] = data0 & 0xffff;
p[1] = (data0 >> 16) & 0xffff;
p[2] = data1 & 0xffff;
break;
default:
printk("Strange: %d words in dma buffer left\n", nw);
break;
}
}
}
static int dma_can_transfer(struct NCR_ESP *esp, struct scsi_cmnd * sp)
{
return sp->SCp.this_residual;
}
static void dma_dump_state(struct NCR_ESP *esp)
{
}
static void dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length)
{
u32 scsi_next_ptr, ioasic_ssr;
unsigned long flags;
if (vaddress & 3)
panic("dec_esp.c: unable to handle partial word transfers, yet...");
dma_cache_wback_inv((unsigned long) phys_to_virt(vaddress), length);
spin_lock_irqsave(&ioasic_ssr_lock, flags);
fast_mb();
ioasic_ssr = ioasic_read(IO_REG_SSR);
ioasic_ssr &= ~IO_SSR_SCSI_DMA_EN;
ioasic_write(IO_REG_SSR, ioasic_ssr);
fast_wmb();
ioasic_write(IO_REG_SCSI_SCR, 0);
ioasic_write(IO_REG_SCSI_DMA_P, vaddress << 3);
/* prepare for next page */
scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
ioasic_ssr |= (IO_SSR_SCSI_DMA_DIR | IO_SSR_SCSI_DMA_EN);
fast_wmb();
ioasic_write(IO_REG_SSR, ioasic_ssr);
fast_iob();
spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
}
static void dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length)
{
u32 scsi_next_ptr, ioasic_ssr;
unsigned long flags;
if (vaddress & 3)
panic("dec_esp.c: unable to handle partial word transfers, yet...");
dma_cache_wback_inv((unsigned long) phys_to_virt(vaddress), length);
spin_lock_irqsave(&ioasic_ssr_lock, flags);
fast_mb();
ioasic_ssr = ioasic_read(IO_REG_SSR);
ioasic_ssr &= ~(IO_SSR_SCSI_DMA_DIR | IO_SSR_SCSI_DMA_EN);
ioasic_write(IO_REG_SSR, ioasic_ssr);
fast_wmb();
ioasic_write(IO_REG_SCSI_SCR, 0);
ioasic_write(IO_REG_SCSI_DMA_P, vaddress << 3);
/* prepare for next page */
scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
ioasic_ssr |= IO_SSR_SCSI_DMA_EN;
fast_wmb();
ioasic_write(IO_REG_SSR, ioasic_ssr);
fast_iob();
spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
}
static void dma_ints_off(struct NCR_ESP *esp)
{
disable_irq(dec_interrupt[DEC_IRQ_ASC_DMA]);
}
static void dma_ints_on(struct NCR_ESP *esp)
{
enable_irq(dec_interrupt[DEC_IRQ_ASC_DMA]);
}
static int dma_irq_p(struct NCR_ESP *esp)
{
return (esp->eregs->esp_status & ESP_STAT_INTR);
}
static int dma_ports_p(struct NCR_ESP *esp)
{
/*
* FIXME: what's this good for?
*/
return 1;
}
static void dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write)
{
/*
* DMA_ST_WRITE means "move data from device to memory"
* so when (write) is true, it actually means READ!
*/
if (write)
dma_init_read(esp, addr, count);
else
dma_init_write(esp, addr, count);
}
static void dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp)
{
sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
}
static void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, struct scsi_cmnd * sp)
{
int sz = sp->SCp.buffers_residual;
struct scatterlist *sg = sp->SCp.buffer;
while (sz >= 0) {
sg[sz].dma_address = page_to_phys(sg[sz].page) + sg[sz].offset;
sz--;
}
sp->SCp.ptr = (char *)(sp->SCp.buffer->dma_address);
}
static void dma_advance_sg(struct scsi_cmnd * sp)
{
sp->SCp.ptr = (char *)(sp->SCp.buffer->dma_address);
}
static void pmaz_dma_drain(struct NCR_ESP *esp)
{
memcpy(phys_to_virt(esp_virt_buffer),
(void *)CKSEG1ADDR(esp->slot + DEC_SCSI_SRAM +
ESP_TGT_DMA_SIZE),
scsi_current_length);
}
static void pmaz_dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length)
{
volatile u32 *dmareg =
(volatile u32 *)CKSEG1ADDR(esp->slot + DEC_SCSI_DMAREG);
if (length > ESP_TGT_DMA_SIZE)
length = ESP_TGT_DMA_SIZE;
*dmareg = TC_ESP_DMA_ADDR(ESP_TGT_DMA_SIZE);
iob();
esp_virt_buffer = vaddress;
scsi_current_length = length;
}
static void pmaz_dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length)
{
volatile u32 *dmareg =
(volatile u32 *)CKSEG1ADDR(esp->slot + DEC_SCSI_DMAREG);
memcpy((void *)CKSEG1ADDR(esp->slot + DEC_SCSI_SRAM +
ESP_TGT_DMA_SIZE),
phys_to_virt(vaddress), length);
wmb();
*dmareg = TC_ESP_DMAR_WRITE | TC_ESP_DMA_ADDR(ESP_TGT_DMA_SIZE);
iob();
}
static void pmaz_dma_ints_off(struct NCR_ESP *esp)
{
}
static void pmaz_dma_ints_on(struct NCR_ESP *esp)
{
}
static void pmaz_dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write)
{
/*
* DMA_ST_WRITE means "move data from device to memory"
* so when (write) is true, it actually means READ!
*/
if (write)
pmaz_dma_init_read(esp, addr, count);
else
pmaz_dma_init_write(esp, addr, count);
}
static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp)
{
sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
}
#ifdef CONFIG_TC
static int __init dec_esp_tc_probe(struct device *dev);
static int __exit dec_esp_tc_remove(struct device *dev);
static const struct tc_device_id dec_esp_tc_table[] = {
{ "DEC ", "PMAZ-AA " },
{ }
};
MODULE_DEVICE_TABLE(tc, dec_esp_tc_table);
static struct tc_driver dec_esp_tc_driver = {
.id_table = dec_esp_tc_table,
.driver = {
.name = "dec_esp",
.bus = &tc_bus_type,
.probe = dec_esp_tc_probe,
.remove = __exit_p(dec_esp_tc_remove),
},
};
static int __init dec_esp_tc_probe(struct device *dev)
{
int status = dec_esp_probe(dev);
if (!status)
get_device(dev);
return status;
}
static int __exit dec_esp_tc_remove(struct device *dev)
{
put_device(dev);
dec_esp_remove(dev);
return 0;
}
#endif
static int __init dec_esp_init(void)
{
int status;
status = tc_register_driver(&dec_esp_tc_driver);
if (!status)
dec_esp_platform_probe();
if (nesps) {
pr_info("ESP: Total of %d ESP hosts found, "
"%d actually in use.\n", nesps, esps_in_use);
esps_running = esps_in_use;
}
return status;
}
static void __exit dec_esp_exit(void)
{
dec_esp_platform_remove();
tc_unregister_driver(&dec_esp_tc_driver);
}
module_init(dec_esp_init);
module_exit(dec_esp_exit);
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