author | Florian Westphal <fw@strlen.de> |
Thu, 09 Apr 2009 12:07:21 +0200 | |
changeset 2 | d1f6d8b6f81c |
parent 0 | aa628870c1d3 |
permissions | -rw-r--r-- |
0
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Port of Linux 2.6.28 for use with network simulation cradle.
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/* |
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* linux/include/linux/mmc/host.h |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* published by the Free Software Foundation. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* |
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* Host driver specific definitions. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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*/ |
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#ifndef LINUX_MMC_HOST_H |
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#define LINUX_MMC_HOST_H |
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|
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#include <linux/leds.h> |
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|
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#include <linux/mmc/core.h> |
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|
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struct mmc_ios { |
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unsigned int clock; /* clock rate */ |
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unsigned short vdd; |
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|
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/* vdd stores the bit number of the selected voltage range from below. */ |
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|
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unsigned char bus_mode; /* command output mode */ |
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#define MMC_BUSMODE_OPENDRAIN 1 |
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#define MMC_BUSMODE_PUSHPULL 2 |
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|
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unsigned char chip_select; /* SPI chip select */ |
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#define MMC_CS_DONTCARE 0 |
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#define MMC_CS_HIGH 1 |
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#define MMC_CS_LOW 2 |
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unsigned char power_mode; /* power supply mode */ |
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#define MMC_POWER_OFF 0 |
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#define MMC_POWER_UP 1 |
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#define MMC_POWER_ON 2 |
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unsigned char bus_width; /* data bus width */ |
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#define MMC_BUS_WIDTH_1 0 |
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#define MMC_BUS_WIDTH_4 2 |
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#define MMC_BUS_WIDTH_8 3 |
0
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unsigned char timing; /* timing specification used */ |
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|
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#define MMC_TIMING_LEGACY 0 |
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#define MMC_TIMING_MMC_HS 1 |
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#define MMC_TIMING_SD_HS 2 |
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}; |
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struct mmc_host_ops { |
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void (*request)(struct mmc_host *host, struct mmc_request *req); |
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/* |
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* Avoid calling these three functions too often or in a "fast path", |
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* since underlaying controller might implement them in an expensive |
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* and/or slow way. |
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* |
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* Also note that these functions might sleep, so don't call them |
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* in the atomic contexts! |
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* |
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* Return values for the get_ro callback should be: |
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* 0 for a read/write card |
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* 1 for a read-only card |
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* -ENOSYS when not supported (equal to NULL callback) |
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* or a negative errno value when something bad happened |
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* |
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* Return values for the get_cd callback should be: |
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* 0 for a absent card |
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* 1 for a present card |
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* -ENOSYS when not supported (equal to NULL callback) |
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* or a negative errno value when something bad happened |
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*/ |
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void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); |
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int (*get_ro)(struct mmc_host *host); |
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int (*get_cd)(struct mmc_host *host); |
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void (*enable_sdio_irq)(struct mmc_host *host, int enable); |
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}; |
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struct mmc_card; |
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struct device; |
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struct mmc_host { |
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struct device *parent; |
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struct device class_dev; |
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int index; |
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const struct mmc_host_ops *ops; |
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unsigned int f_min; |
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unsigned int f_max; |
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u32 ocr_avail; |
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#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ |
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#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ |
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#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */ |
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#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */ |
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#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */ |
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#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */ |
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#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */ |
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#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */ |
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#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */ |
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#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */ |
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#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */ |
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#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */ |
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#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */ |
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#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */ |
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#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ |
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#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ |
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#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ |
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|
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unsigned long caps; /* Host capabilities */ |
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#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ |
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#define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */ |
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#define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */ |
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#define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */ |
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#define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */ |
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#define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */ |
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#define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */ |
0
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/* host specific block data */ |
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unsigned int max_seg_size; /* see blk_queue_max_segment_size */ |
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unsigned short max_hw_segs; /* see blk_queue_max_hw_segments */ |
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unsigned short max_phys_segs; /* see blk_queue_max_phys_segments */ |
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unsigned short unused; |
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unsigned int max_req_size; /* maximum number of bytes in one req */ |
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unsigned int max_blk_size; /* maximum size of one mmc block */ |
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unsigned int max_blk_count; /* maximum number of blocks in one req */ |
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/* private data */ |
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spinlock_t lock; /* lock for claim and bus ops */ |
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struct mmc_ios ios; /* current io bus settings */ |
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u32 ocr; /* the current OCR setting */ |
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/* group bitfields together to minimize padding */ |
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unsigned int use_spi_crc:1; |
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unsigned int claimed:1; /* host exclusively claimed */ |
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unsigned int bus_dead:1; /* bus has been released */ |
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#ifdef CONFIG_MMC_DEBUG |
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unsigned int removed:1; /* host is being removed */ |
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#endif |
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struct mmc_card *card; /* device attached to this host */ |
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wait_queue_head_t wq; |
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struct delayed_work detect; |
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const struct mmc_bus_ops *bus_ops; /* current bus driver */ |
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unsigned int bus_refs; /* reference counter */ |
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unsigned int sdio_irqs; |
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struct task_struct *sdio_irq_thread; |
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atomic_t sdio_irq_thread_abort; |
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#ifdef CONFIG_LEDS_TRIGGERS |
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struct led_trigger *led; /* activity led */ |
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#endif |
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struct dentry *debugfs_root; |
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unsigned long private[0] ____cacheline_aligned; |
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}; |
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extern struct mmc_host *mmc_alloc_host(int extra, struct device *); |
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extern int mmc_add_host(struct mmc_host *); |
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extern void mmc_remove_host(struct mmc_host *); |
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extern void mmc_free_host(struct mmc_host *); |
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static inline void *mmc_priv(struct mmc_host *host) |
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{ |
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return (void *)host->private; |
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} |
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#define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI) |
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#define mmc_dev(x) ((x)->parent) |
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#define mmc_classdev(x) (&(x)->class_dev) |
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#define mmc_hostname(x) (dev_name(&(x)->class_dev)) |
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extern int mmc_suspend_host(struct mmc_host *, pm_message_t); |
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extern int mmc_resume_host(struct mmc_host *); |
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extern void mmc_detect_change(struct mmc_host *, unsigned long delay); |
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extern void mmc_request_done(struct mmc_host *, struct mmc_request *); |
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static inline void mmc_signal_sdio_irq(struct mmc_host *host) |
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{ |
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host->ops->enable_sdio_irq(host, 0); |
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wake_up_process(host->sdio_irq_thread); |
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} |
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#endif |
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