[mirror_ubuntu-jammy-kernel.git] / include / asm-arm / arch-orion5x / io.h

/*
 * include/asm-arm/arch-orion5x/io.h
 *
 * Tzachi Perelstein <tzachi@marvell.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#ifndef __ASM_ARCH_IO_H
#define __ASM_ARCH_IO_H

#include "orion5x.h"

#define IO_SPACE_LIMIT		0xffffffff

static inline void __iomem *
__arch_ioremap(unsigned long paddr, size_t size, unsigned int mtype)
{
	void __iomem *retval;
	unsigned long offs = paddr - ORION5X_REGS_PHYS_BASE;
	if (mtype == MT_DEVICE && size && offs < ORION5X_REGS_SIZE &&
	    size <= ORION5X_REGS_SIZE && offs + size <= ORION5X_REGS_SIZE) {
		retval = (void __iomem *)ORION5X_REGS_VIRT_BASE + offs;
	} else {
		retval = __arm_ioremap(paddr, size, mtype);
	}

	return retval;
}

static inline void
__arch_iounmap(void __iomem *addr)
{
	if (addr < (void __iomem *)ORION5X_REGS_VIRT_BASE ||
	    addr >= (void __iomem *)(ORION5X_REGS_VIRT_BASE + ORION5X_REGS_SIZE))
		__iounmap(addr);
}

static inline void __iomem *__io(unsigned long addr)
{
	return (void __iomem *)addr;
}

#define __arch_ioremap(p, s, m)	__arch_ioremap(p, s, m)
#define __arch_iounmap(a)	__arch_iounmap(a)
#define __io(a)			__io(a)
#define __mem_pci(a)		(a)


/*****************************************************************************
 * Helpers to access Orion registers
 ****************************************************************************/
/*
 * These are not preempt-safe.  Locks, if needed, must be taken
 * care of by the caller.
 */
#define orion5x_setbits(r, mask)	writel(readl(r) | (mask), (r))
#define orion5x_clrbits(r, mask)	writel(readl(r) & ~(mask), (r))


#endif
Commit	Line	Data
585cf175	1	/*
9dd0b194	2	* include/asm-arm/arch-orion5x/io.h
585cf175 TP	3	*
	4	* Tzachi Perelstein <tzachi@marvell.com>
	5	*
159ffb3a LB	6	* This file is licensed under the terms of the GNU General Public
159ffb3a LB	7	* License version 2. This program is licensed "as is" without any
585cf175 TP	8	* warranty of any kind, whether express or implied.
	9	*/
	10
159ffb3a LB	11	#ifndef __ASM_ARCH_IO_H
159ffb3a LB	12	#define __ASM_ARCH_IO_H
585cf175	13
9dd0b194	14	#include "orion5x.h"
585cf175 TP	15
585cf175 TP	16	#define IO_SPACE_LIMIT 0xffffffff
585cf175	17
1419468a LB	18	static inline void __iomem *
	19	__arch_ioremap(unsigned long paddr, size_t size, unsigned int mtype)
	20	{
	21	void __iomem *retval;
fd153abb NP	22	unsigned long offs = paddr - ORION5X_REGS_PHYS_BASE;
	23	if (mtype == MT_DEVICE && size && offs < ORION5X_REGS_SIZE &&
	24	size <= ORION5X_REGS_SIZE && offs + size <= ORION5X_REGS_SIZE) {
	25	retval = (void __iomem *)ORION5X_REGS_VIRT_BASE + offs;
1419468a LB	26	} else {
	27	retval = __arm_ioremap(paddr, size, mtype);
	28	}
	29
	30	return retval;
	31	}
	32
	33	static inline void
	34	__arch_iounmap(void __iomem *addr)
	35	{
9dd0b194 LB	36	if (addr < (void __iomem *)ORION5X_REGS_VIRT_BASE \|\|
9dd0b194 LB	37	addr >= (void __iomem *)(ORION5X_REGS_VIRT_BASE + ORION5X_REGS_SIZE))
1419468a LB	38	__iounmap(addr);
	39	}
	40
585cf175 TP	41	static inline void __iomem *__io(unsigned long addr)
	42	{
	43	return (void __iomem *)addr;
	44	}
	45
1419468a LB	46	#define __arch_ioremap(p, s, m) __arch_ioremap(p, s, m)
1419468a LB	47	#define __arch_iounmap(a) __arch_iounmap(a)
585cf175 TP	48	#define __io(a) __io(a)
	49	#define __mem_pci(a) (a)
	50
b590bc5c LB	51
	52	/*****************************************************************************
	53	* Helpers to access Orion registers
	54	****************************************************************************/
b590bc5c LB	55	/*
	56	* These are not preempt-safe. Locks, if needed, must be taken
	57	* care of by the caller.
	58	*/
79e90dd5 LB	59	#define orion5x_setbits(r, mask) writel(readl(r) \| (mask), (r))
79e90dd5 LB	60	#define orion5x_clrbits(r, mask) writel(readl(r) & ~(mask), (r))
b590bc5c LB	61
b590bc5c LB	62
585cf175	63	#endif