patch-2.4.23 linux-2.4.23/include/asm-i386/sl811-hw.h

• Lines: 134
• Date: 2003-11-28 10:26:21.000000000 -0800
• Orig file: linux-2.4.22/include/asm-i386/sl811-hw.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.22/include/asm-i386/sl811-hw.h linux-2.4.23/include/asm-i386/sl811-hw.h
@@ -0,0 +1,133 @@
+/*
+File: include/asm-i386/sl811-hw.h
+
+19.09.2003 hne@ist1.de
+Use Kernel 2.4.20 and this source from 2.4.22
+Splitt hardware depens into file sl811-x86.h and sl811-arm.h.
+Functions are inline.
+
+Handle multi instances. For two controller on one board.
+"hc->data_io" not used for x86 arch.
+
+22.09.2003 hne
+Alternate IO-Base for second Controller (CF/USB1).
+
+23.09.2003 hne
+Move Hardware depend header sl811-x86.h into include/asm-i386/sl811-hw.h.
+
+03.10.2003 hne
+Low level only for port io into hardware-include.
+*/
+
+#ifndef __LINUX_SL811_HW_H
+#define __LINUX_SL811_HW_H
+
+#define MAX_CONTROLERS  2       /* Max number of SL811 controllers per module */
+
+static int io[MAX_CONTROLERS] = { 0x220, 0x222 };	/* IO ports for controllers */
+static int irq[MAX_CONTROLERS] = { 12, 12 };		/* Interrupt list */
+
+MODULE_PARM(io, "1-" __MODULE_STRING(MAX_CONTROLERS) "i");
+MODULE_PARM_DESC(io, "I/O base address(es), 0x220,0x222 default");
+MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_CONTROLERS) "i");
+MODULE_PARM_DESC(irq, "IRQ number(s), 12,12 default");
+
+#define OFFSET_DATA_REG		1	/* Offset from ADDR_IO to DATA_IO */
+					/* Do not change this! */
+#define SIZEOF_IO_REGION	2	/* Size for request/release region */
+
+/*
+ * Low level: Read from Data port [x86]
+ */
+static __u8 inline sl811_read_data (struct sl811_hc *hc)
+{
+	return ((__u8) inb (hc->addr_io+OFFSET_DATA_REG));
+}
+
+/*
+ * Low level: Write to index register [x86]
+ */
+static void inline sl811_write_index (struct sl811_hc *hc, __u8 index)
+{
+	outb (index, hc->addr_io);
+}
+
+/*
+ * Low level: Write to Data port [x86]
+ */
+static void inline sl811_write_data (struct sl811_hc *hc, __u8 data)
+{
+	outb (data, hc->addr_io+OFFSET_DATA_REG);
+}
+
+/*
+ * Low level: Write to index register and data port [x86]
+ */
+static void inline sl811_write_index_data (struct sl811_hc *hc, __u8 index, __u8 data)
+{
+	outw (index|(((__u16)data) << 8), hc->addr_io);
+}
+
+/*
+ * This	function is board specific.  It	sets up	the interrupt to
+ * be an edge trigger and trigger on the rising	edge
+ */
+static void inline sl811_init_irq(void)
+{
+	/* nothing for x86 */
+}
+
+
+/*****************************************************************
+ *
+ * Function Name: release_regions [x86]
+ *
+ * This function is board specific. It release all io address
+ * from memory (if can).
+ *
+ * Input: struct sl811_hc * *
+ *
+ * Return value  : 0 = OK
+ *
+ *****************************************************************/
+static void inline sl811_release_regions(struct sl811_hc *hc)
+{
+	if (hc->addr_io)
+		release_region(hc->addr_io, SIZEOF_IO_REGION);
+	hc->addr_io = 0;
+
+	/* data_io unused for x86 */
+	/* ...
+	if (hc->data_io)
+		release_region(hc->data_io, SIZEOF_IO_REGION);
+	hc->data_io = 0;
+	... */
+}
+
+/*****************************************************************
+ *
+ * Function Name: request_regions [x86]
+ *
+ * This function is board specific. It request all io address and
+ * maps into memory (if can).
+ *
+ * Input: struct sl811_hc *
+ *
+ * Return value  : 0 = OK
+ *
+ *****************************************************************/
+static int inline sl811_request_regions (struct sl811_hc *hc, int addr_io, int data_io, const char *name)
+{
+	if (!request_region(addr_io, SIZEOF_IO_REGION, name)) {
+		PDEBUG(3, "request address %d failed", addr_io);
+		return -EBUSY;
+	}
+	hc->addr_io =	addr_io;
+
+	/* data_io unused for x86 */
+	/* hc->data_io = data_io; */
+
+	return 0;
+}
+
+#endif // __LINUX_SL811_HW_H