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1275 |
phoenix |
/*
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File: include/asm-i386/sl811-hw.h
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19.09.2003 hne@ist1.de
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Use Kernel 2.4.20 and this source from 2.4.22
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Splitt hardware depens into file sl811-x86.h and sl811-arm.h.
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Functions are inline.
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Handle multi instances. For two controller on one board.
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"hc->data_io" not used for x86 arch.
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22.09.2003 hne
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Alternate IO-Base for second Controller (CF/USB1).
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23.09.2003 hne
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Move Hardware depend header sl811-x86.h into include/asm-i386/sl811-hw.h.
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03.10.2003 hne
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Low level only for port io into hardware-include.
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*/
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#ifndef __LINUX_SL811_HW_H
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#define __LINUX_SL811_HW_H
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#define MAX_CONTROLERS 2 /* Max number of SL811 controllers per module */
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static int io[MAX_CONTROLERS] = { 0x220, 0x222 }; /* IO ports for controllers */
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static int irq[MAX_CONTROLERS] = { 12, 12 }; /* Interrupt list */
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MODULE_PARM(io, "1-" __MODULE_STRING(MAX_CONTROLERS) "i");
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MODULE_PARM_DESC(io, "I/O base address(es), 0x220,0x222 default");
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MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_CONTROLERS) "i");
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MODULE_PARM_DESC(irq, "IRQ number(s), 12,12 default");
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#define OFFSET_DATA_REG 1 /* Offset from ADDR_IO to DATA_IO */
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/* Do not change this! */
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#define SIZEOF_IO_REGION 2 /* Size for request/release region */
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/*
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* Low level: Read from Data port [x86]
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*/
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static __u8 inline sl811_read_data (struct sl811_hc *hc)
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{
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return ((__u8) inb (hc->addr_io+OFFSET_DATA_REG));
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}
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/*
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* Low level: Write to index register [x86]
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*/
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static void inline sl811_write_index (struct sl811_hc *hc, __u8 index)
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{
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outb (index, hc->addr_io);
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}
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/*
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* Low level: Write to Data port [x86]
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*/
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static void inline sl811_write_data (struct sl811_hc *hc, __u8 data)
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{
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outb (data, hc->addr_io+OFFSET_DATA_REG);
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}
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/*
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* Low level: Write to index register and data port [x86]
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*/
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static void inline sl811_write_index_data (struct sl811_hc *hc, __u8 index, __u8 data)
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{
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outw (index|(((__u16)data) << 8), hc->addr_io);
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}
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/*
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* This function is board specific. It sets up the interrupt to
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* be an edge trigger and trigger on the rising edge
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*/
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static void inline sl811_init_irq(void)
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{
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/* nothing for x86 */
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}
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/*****************************************************************
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*
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* Function Name: release_regions [x86]
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*
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* This function is board specific. It release all io address
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* from memory (if can).
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*
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* Input: struct sl811_hc * *
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*
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* Return value : 0 = OK
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*
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*****************************************************************/
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static void inline sl811_release_regions(struct sl811_hc *hc)
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{
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if (hc->addr_io)
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release_region(hc->addr_io, SIZEOF_IO_REGION);
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hc->addr_io = 0;
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/* data_io unused for x86 */
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/* ...
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if (hc->data_io)
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release_region(hc->data_io, SIZEOF_IO_REGION);
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hc->data_io = 0;
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... */
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}
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/*****************************************************************
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*
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* Function Name: request_regions [x86]
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*
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* This function is board specific. It request all io address and
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* maps into memory (if can).
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*
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* Input: struct sl811_hc *
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*
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* Return value : 0 = OK
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*
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*****************************************************************/
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static int inline sl811_request_regions (struct sl811_hc *hc, int addr_io, int data_io, const char *name)
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{
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if (!request_region(addr_io, SIZEOF_IO_REGION, name)) {
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PDEBUG(3, "request address %d failed", addr_io);
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return -EBUSY;
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}
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hc->addr_io = addr_io;
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/* data_io unused for x86 */
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/* hc->data_io = data_io; */
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return 0;
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}
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#endif // __LINUX_SL811_HW_H
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