include/linux/goldfish.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __LINUX_GOLDFISH_H
   3 #define __LINUX_GOLDFISH_H
   4
   5 #include <linux/kernel.h>
   6 #include <linux/types.h>
   7 #include <linux/io.h>
   8
   9 /* Helpers for Goldfish virtual platform */
  10
  11 #ifndef gf_ioread32
  12 #define gf_ioread32 ioread32
  13 #endif
  14 #ifndef gf_iowrite32
  15 #define gf_iowrite32 iowrite32
  16 #endif
  17
  18 static inline void gf_write_ptr(const void *ptr, void __iomem *portl,
  19                                 void __iomem *porth)
  20 {
  21         const unsigned long addr = (unsigned long)ptr;
  22
  23         gf_iowrite32(lower_32_bits(addr), portl);
  24 #ifdef CONFIG_64BIT
  25         gf_iowrite32(upper_32_bits(addr), porth);
  26 #endif
  27 }
  28
  29 static inline void gf_write_dma_addr(const dma_addr_t addr,
  30                                      void __iomem *portl,
  31                                      void __iomem *porth)
  32 {
  33         gf_iowrite32(lower_32_bits(addr), portl);
  34 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
  35         gf_iowrite32(upper_32_bits(addr), porth);
  36 #endif
  37 }
  38
  39
  40 #endif /* __LINUX_GOLDFISH_H */