cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ioremap.h (956B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef BCM63XX_IOREMAP_H_
      3#define BCM63XX_IOREMAP_H_
      4
      5#include <bcm63xx_cpu.h>
      6
      7static inline int is_bcm63xx_internal_registers(phys_addr_t offset)
      8{
      9	switch (bcm63xx_get_cpu_id()) {
     10	case BCM3368_CPU_ID:
     11		if (offset >= 0xfff80000)
     12			return 1;
     13		break;
     14	case BCM6338_CPU_ID:
     15	case BCM6345_CPU_ID:
     16	case BCM6348_CPU_ID:
     17	case BCM6358_CPU_ID:
     18		if (offset >= 0xfff00000)
     19			return 1;
     20		break;
     21	case BCM6328_CPU_ID:
     22	case BCM6362_CPU_ID:
     23	case BCM6368_CPU_ID:
     24		if (offset >= 0xb0000000 && offset < 0xb1000000)
     25			return 1;
     26		break;
     27	}
     28	return 0;
     29}
     30
     31static inline void __iomem *plat_ioremap(phys_addr_t offset, unsigned long size,
     32					 unsigned long flags)
     33{
     34	if (is_bcm63xx_internal_registers(offset))
     35		return (void __iomem *)offset;
     36	return NULL;
     37}
     38
     39static inline int plat_iounmap(const volatile void __iomem *addr)
     40{
     41	return is_bcm63xx_internal_registers((unsigned long)addr);
     42}
     43
     44#endif /* BCM63XX_IOREMAP_H_ */