162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt/* 262d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * arch/sh/lib/io.c - SH32 optimized I/O routines 362d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * 462d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * Copyright (C) 2000 Stuart Menefy 562d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * Copyright (C) 2005 Paul Mundt 662d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * 762d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * Provide real functions which expand to whatever the header file defined. 862d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * Also definitions of machine independent IO functions. 962d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * 1062d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * This file is subject to the terms and conditions of the GNU General Public 1162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * License. See the file "COPYING" in the main directory of this archive 1262d6b66edc68f906138df7ba01efd41a45981586Paul Mundt * for more details. 1362d6b66edc68f906138df7ba01efd41a45981586Paul Mundt */ 1462d6b66edc68f906138df7ba01efd41a45981586Paul Mundt#include <linux/module.h> 1562d6b66edc68f906138df7ba01efd41a45981586Paul Mundt#include <linux/io.h> 1662d6b66edc68f906138df7ba01efd41a45981586Paul Mundt 1764c9627c2628bc3bd3291710b8ee6f8335883f8bPaul Mundtvoid __raw_readsl(const void __iomem *addr, void *datap, int len) 1862d6b66edc68f906138df7ba01efd41a45981586Paul Mundt{ 1962d6b66edc68f906138df7ba01efd41a45981586Paul Mundt u32 *data; 2062d6b66edc68f906138df7ba01efd41a45981586Paul Mundt 2162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--) 2264c9627c2628bc3bd3291710b8ee6f8335883f8bPaul Mundt *data++ = __raw_readl(addr); 2362d6b66edc68f906138df7ba01efd41a45981586Paul Mundt 2462d6b66edc68f906138df7ba01efd41a45981586Paul Mundt if (likely(len >= (0x20 >> 2))) { 2562d6b66edc68f906138df7ba01efd41a45981586Paul Mundt int tmp2, tmp3, tmp4, tmp5, tmp6; 2662d6b66edc68f906138df7ba01efd41a45981586Paul Mundt 2762d6b66edc68f906138df7ba01efd41a45981586Paul Mundt __asm__ __volatile__( 2862d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "1: \n\t" 2962d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%7, r0 \n\t" 3062d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%7, %2 \n\t" 3162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt#ifdef CONFIG_CPU_SH4 3262d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "movca.l r0, @%0 \n\t" 3362d6b66edc68f906138df7ba01efd41a45981586Paul Mundt#else 3462d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l r0, @%0 \n\t" 3562d6b66edc68f906138df7ba01efd41a45981586Paul Mundt#endif 3662d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%7, %3 \n\t" 3762d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%7, %4 \n\t" 3862d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%7, %5 \n\t" 3962d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%7, %6 \n\t" 4062d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%7, r7 \n\t" 4162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%7, r0 \n\t" 4262d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l %2, @(0x04,%0) \n\t" 4362d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov #0x20>>2, %2 \n\t" 4462d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l %3, @(0x08,%0) \n\t" 4562d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "sub %2, %1 \n\t" 4662d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l %4, @(0x0c,%0) \n\t" 4762d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "cmp/hi %1, %2 ! T if 32 > len \n\t" 4862d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l %5, @(0x10,%0) \n\t" 4962d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l %6, @(0x14,%0) \n\t" 5062d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l r7, @(0x18,%0) \n\t" 5162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l r0, @(0x1c,%0) \n\t" 5262d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "bf.s 1b \n\t" 5362d6b66edc68f906138df7ba01efd41a45981586Paul Mundt " add #0x20, %0 \n\t" 5462d6b66edc68f906138df7ba01efd41a45981586Paul Mundt : "=&r" (data), "=&r" (len), 5562d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4), 5662d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "=&r" (tmp5), "=&r" (tmp6) 5762d6b66edc68f906138df7ba01efd41a45981586Paul Mundt : "r"(addr), "0" (data), "1" (len) 5862d6b66edc68f906138df7ba01efd41a45981586Paul Mundt : "r0", "r7", "t", "memory"); 5962d6b66edc68f906138df7ba01efd41a45981586Paul Mundt } 6062d6b66edc68f906138df7ba01efd41a45981586Paul Mundt 6162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt for (; len != 0; len--) 6264c9627c2628bc3bd3291710b8ee6f8335883f8bPaul Mundt *data++ = __raw_readl(addr); 6362d6b66edc68f906138df7ba01efd41a45981586Paul Mundt} 6462d6b66edc68f906138df7ba01efd41a45981586Paul MundtEXPORT_SYMBOL(__raw_readsl); 6562d6b66edc68f906138df7ba01efd41a45981586Paul Mundt 6664c9627c2628bc3bd3291710b8ee6f8335883f8bPaul Mundtvoid __raw_writesl(void __iomem *addr, const void *data, int len) 6762d6b66edc68f906138df7ba01efd41a45981586Paul Mundt{ 6862d6b66edc68f906138df7ba01efd41a45981586Paul Mundt if (likely(len != 0)) { 6962d6b66edc68f906138df7ba01efd41a45981586Paul Mundt int tmp1; 7062d6b66edc68f906138df7ba01efd41a45981586Paul Mundt 7162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt __asm__ __volatile__ ( 7262d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "1: \n\t" 7362d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "mov.l @%0+, %1 \n\t" 7462d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "dt %3 \n\t" 7562d6b66edc68f906138df7ba01efd41a45981586Paul Mundt "bf.s 1b \n\t" 7662d6b66edc68f906138df7ba01efd41a45981586Paul Mundt " mov.l %1, @%4 \n\t" 7762d6b66edc68f906138df7ba01efd41a45981586Paul Mundt : "=&r" (data), "=&r" (tmp1) 7862d6b66edc68f906138df7ba01efd41a45981586Paul Mundt : "0" (data), "r" (len), "r"(addr) 7962d6b66edc68f906138df7ba01efd41a45981586Paul Mundt : "t", "memory"); 8062d6b66edc68f906138df7ba01efd41a45981586Paul Mundt } 8162d6b66edc68f906138df7ba01efd41a45981586Paul Mundt} 8262d6b66edc68f906138df7ba01efd41a45981586Paul MundtEXPORT_SYMBOL(__raw_writesl); 83