1*4494ce4fSKuninori Morimoto // SPDX-License-Identifier: GPL-2.0 262d6b66eSPaul Mundt /* 362d6b66eSPaul Mundt * arch/sh/lib/io.c - SH32 optimized I/O routines 462d6b66eSPaul Mundt * 562d6b66eSPaul Mundt * Copyright (C) 2000 Stuart Menefy 662d6b66eSPaul Mundt * Copyright (C) 2005 Paul Mundt 762d6b66eSPaul Mundt * 862d6b66eSPaul Mundt * Provide real functions which expand to whatever the header file defined. 962d6b66eSPaul Mundt * Also definitions of machine independent IO functions. 1062d6b66eSPaul Mundt */ 1162d6b66eSPaul Mundt #include <linux/module.h> 1262d6b66eSPaul Mundt #include <linux/io.h> 1362d6b66eSPaul Mundt 1464c9627cSPaul Mundt void __raw_readsl(const void __iomem *addr, void *datap, int len) 1562d6b66eSPaul Mundt { 1662d6b66eSPaul Mundt u32 *data; 1762d6b66eSPaul Mundt 1862d6b66eSPaul Mundt for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--) 1964c9627cSPaul Mundt *data++ = __raw_readl(addr); 2062d6b66eSPaul Mundt 2162d6b66eSPaul Mundt if (likely(len >= (0x20 >> 2))) { 2262d6b66eSPaul Mundt int tmp2, tmp3, tmp4, tmp5, tmp6; 2362d6b66eSPaul Mundt 2462d6b66eSPaul Mundt __asm__ __volatile__( 2562d6b66eSPaul Mundt "1: \n\t" 2662d6b66eSPaul Mundt "mov.l @%7, r0 \n\t" 2762d6b66eSPaul Mundt "mov.l @%7, %2 \n\t" 2862d6b66eSPaul Mundt #ifdef CONFIG_CPU_SH4 2962d6b66eSPaul Mundt "movca.l r0, @%0 \n\t" 3062d6b66eSPaul Mundt #else 3162d6b66eSPaul Mundt "mov.l r0, @%0 \n\t" 3262d6b66eSPaul Mundt #endif 3362d6b66eSPaul Mundt "mov.l @%7, %3 \n\t" 3462d6b66eSPaul Mundt "mov.l @%7, %4 \n\t" 3562d6b66eSPaul Mundt "mov.l @%7, %5 \n\t" 3662d6b66eSPaul Mundt "mov.l @%7, %6 \n\t" 3762d6b66eSPaul Mundt "mov.l @%7, r7 \n\t" 3862d6b66eSPaul Mundt "mov.l @%7, r0 \n\t" 3962d6b66eSPaul Mundt "mov.l %2, @(0x04,%0) \n\t" 4062d6b66eSPaul Mundt "mov #0x20>>2, %2 \n\t" 4162d6b66eSPaul Mundt "mov.l %3, @(0x08,%0) \n\t" 4262d6b66eSPaul Mundt "sub %2, %1 \n\t" 4362d6b66eSPaul Mundt "mov.l %4, @(0x0c,%0) \n\t" 4462d6b66eSPaul Mundt "cmp/hi %1, %2 ! T if 32 > len \n\t" 4562d6b66eSPaul Mundt "mov.l %5, @(0x10,%0) \n\t" 4662d6b66eSPaul Mundt "mov.l %6, @(0x14,%0) \n\t" 4762d6b66eSPaul Mundt "mov.l r7, @(0x18,%0) \n\t" 4862d6b66eSPaul Mundt "mov.l r0, @(0x1c,%0) \n\t" 4962d6b66eSPaul Mundt "bf.s 1b \n\t" 5062d6b66eSPaul Mundt " add #0x20, %0 \n\t" 5162d6b66eSPaul Mundt : "=&r" (data), "=&r" (len), 5262d6b66eSPaul Mundt "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4), 5362d6b66eSPaul Mundt "=&r" (tmp5), "=&r" (tmp6) 5462d6b66eSPaul Mundt : "r"(addr), "0" (data), "1" (len) 5562d6b66eSPaul Mundt : "r0", "r7", "t", "memory"); 5662d6b66eSPaul Mundt } 5762d6b66eSPaul Mundt 5862d6b66eSPaul Mundt for (; len != 0; len--) 5964c9627cSPaul Mundt *data++ = __raw_readl(addr); 6062d6b66eSPaul Mundt } 6162d6b66eSPaul Mundt EXPORT_SYMBOL(__raw_readsl); 6262d6b66eSPaul Mundt 6364c9627cSPaul Mundt void __raw_writesl(void __iomem *addr, const void *data, int len) 6462d6b66eSPaul Mundt { 6562d6b66eSPaul Mundt if (likely(len != 0)) { 6662d6b66eSPaul Mundt int tmp1; 6762d6b66eSPaul Mundt 6862d6b66eSPaul Mundt __asm__ __volatile__ ( 6962d6b66eSPaul Mundt "1: \n\t" 7062d6b66eSPaul Mundt "mov.l @%0+, %1 \n\t" 7162d6b66eSPaul Mundt "dt %3 \n\t" 7262d6b66eSPaul Mundt "bf.s 1b \n\t" 7362d6b66eSPaul Mundt " mov.l %1, @%4 \n\t" 7462d6b66eSPaul Mundt : "=&r" (data), "=&r" (tmp1) 7562d6b66eSPaul Mundt : "0" (data), "r" (len), "r"(addr) 7662d6b66eSPaul Mundt : "t", "memory"); 7762d6b66eSPaul Mundt } 7862d6b66eSPaul Mundt } 7962d6b66eSPaul Mundt EXPORT_SYMBOL(__raw_writesl); 80