d2e7a4b66d
There is no need to schedule a bottomhalf for either of them. One is fast and the another schedules a bottomhalf itself. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
#ifndef HAYESESP_H
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#define HAYESESP_H
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struct hayes_esp_config {
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short flow_on;
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short flow_off;
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short rx_trigger;
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short tx_trigger;
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short pio_threshold;
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unsigned char rx_timeout;
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char dma_channel;
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};
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#ifdef __KERNEL__
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#define ESP_DMA_CHANNEL 0
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#define ESP_RX_TRIGGER 768
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#define ESP_TX_TRIGGER 768
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#define ESP_FLOW_OFF 1016
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#define ESP_FLOW_ON 944
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#define ESP_RX_TMOUT 128
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#define ESP_PIO_THRESHOLD 32
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#define ESP_IN_MAJOR 57 /* major dev # for dial in */
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#define ESP_OUT_MAJOR 58 /* major dev # for dial out */
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#define ESPC_SCALE 3
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#define UART_ESI_BASE 0x00
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#define UART_ESI_SID 0x01
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#define UART_ESI_RX 0x02
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#define UART_ESI_TX 0x02
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#define UART_ESI_CMD1 0x04
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#define UART_ESI_CMD2 0x05
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#define UART_ESI_STAT1 0x04
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#define UART_ESI_STAT2 0x05
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#define UART_ESI_RWS 0x07
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#define UART_IER_DMA_TMOUT 0x80
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#define UART_IER_DMA_TC 0x08
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#define ESI_SET_IRQ 0x04
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#define ESI_SET_DMA_TMOUT 0x05
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#define ESI_SET_SRV_MASK 0x06
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#define ESI_SET_ERR_MASK 0x07
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#define ESI_SET_FLOW_CNTL 0x08
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#define ESI_SET_FLOW_CHARS 0x09
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#define ESI_SET_FLOW_LVL 0x0a
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#define ESI_SET_TRIGGER 0x0b
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#define ESI_SET_RX_TIMEOUT 0x0c
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#define ESI_SET_FLOW_TMOUT 0x0d
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#define ESI_WRITE_UART 0x0e
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#define ESI_READ_UART 0x0f
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#define ESI_SET_MODE 0x10
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#define ESI_GET_ERR_STAT 0x12
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#define ESI_GET_UART_STAT 0x13
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#define ESI_GET_RX_AVAIL 0x14
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#define ESI_GET_TX_AVAIL 0x15
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#define ESI_START_DMA_RX 0x16
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#define ESI_START_DMA_TX 0x17
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#define ESI_ISSUE_BREAK 0x1a
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#define ESI_FLUSH_RX 0x1b
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#define ESI_FLUSH_TX 0x1c
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#define ESI_SET_BAUD 0x1d
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#define ESI_SET_ENH_IRQ 0x1f
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#define ESI_SET_REINTR 0x20
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#define ESI_SET_PRESCALAR 0x23
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#define ESI_NO_COMMAND 0xff
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#define ESP_STAT_RX_TIMEOUT 0x01
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#define ESP_STAT_DMA_RX 0x02
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#define ESP_STAT_DMA_TX 0x04
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#define ESP_STAT_NEVER_DMA 0x08
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#define ESP_STAT_USE_PIO 0x10
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#define ESP_MAGIC 0x53ee
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#define ESP_XMIT_SIZE 4096
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struct esp_struct {
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int magic;
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spinlock_t lock;
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int port;
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int irq;
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int flags; /* defined in tty.h */
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struct tty_struct *tty;
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int read_status_mask;
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int ignore_status_mask;
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int timeout;
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int stat_flags;
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int custom_divisor;
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int close_delay;
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unsigned short closing_wait;
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unsigned short closing_wait2;
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int IER; /* Interrupt Enable Register */
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int MCR; /* Modem control register */
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unsigned long last_active;
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int line;
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int count; /* # of fd on device */
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int blocked_open; /* # of blocked opens */
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unsigned char *xmit_buf;
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int xmit_head;
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int xmit_tail;
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int xmit_cnt;
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wait_queue_head_t open_wait;
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wait_queue_head_t close_wait;
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wait_queue_head_t delta_msr_wait;
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wait_queue_head_t break_wait;
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struct async_icount icount; /* kernel counters for the 4 input interrupts */
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struct hayes_esp_config config; /* port configuration */
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struct esp_struct *next_port; /* For the linked list */
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};
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struct esp_pio_buffer {
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unsigned char data[1024];
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struct esp_pio_buffer *next;
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};
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#endif /* __KERNEL__ */
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#endif /* ESP_H */
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