arch/mips/include/asm/mach-loongson64/loongson_regs.h - linux - Git at Google

 /*
  * Read/Write Loongson Extension Registers
  */

 #ifndef _LOONGSON_REGS_H_
 #define _LOONGSON_REGS_H_

 #include <linux/types.h>
 #include <linux/bits.h>

 #include <asm/mipsregs.h>
 #include <asm/cpu.h>

 static inline bool cpu_has_cfg(void)
 {
 	return ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64G);
 }

 static inline u32 read_cpucfg(u32 reg)
 {
 	u32 __res;

 	__asm__ __volatile__(
 		"parse_r __res,%0\n\t"
 		"parse_r reg,%1\n\t"
 		".insn \n\t"
 		".word (0xc8080118 | (reg << 21) | (__res << 11))\n\t"
 		:"=r"(__res)
 		:"r"(reg)
 		:
 		);
 	return __res;
 }

 /* Bit Domains for CFG registers */
 #define LOONGSON_CFG0	0x0
 #define LOONGSON_CFG0_PRID GENMASK(31, 0)

 #define LOONGSON_CFG1 0x1
 #define LOONGSON_CFG1_FP	BIT(0)
 #define LOONGSON_CFG1_FPREV	GENMASK(3, 1)
 #define LOONGSON_CFG1_MMI	BIT(4)
 #define LOONGSON_CFG1_MSA1	BIT(5)
 #define LOONGSON_CFG1_MSA2	BIT(6)
 #define LOONGSON_CFG1_CGP	BIT(7)
 #define LOONGSON_CFG1_WRP	BIT(8)
 #define LOONGSON_CFG1_LSX1	BIT(9)
 #define LOONGSON_CFG1_LSX2	BIT(10)
 #define LOONGSON_CFG1_LASX	BIT(11)
 #define LOONGSON_CFG1_R6FXP	BIT(12)
 #define LOONGSON_CFG1_R6CRCP	BIT(13)
 #define LOONGSON_CFG1_R6FPP	BIT(14)
 #define LOONGSON_CFG1_CNT64	BIT(15)
 #define LOONGSON_CFG1_LSLDR0	BIT(16)
 #define LOONGSON_CFG1_LSPREF	BIT(17)
 #define LOONGSON_CFG1_LSPREFX	BIT(18)
 #define LOONGSON_CFG1_LSSYNCI	BIT(19)
 #define LOONGSON_CFG1_LSUCA	BIT(20)
 #define LOONGSON_CFG1_LLSYNC	BIT(21)
 #define LOONGSON_CFG1_TGTSYNC	BIT(22)
 #define LOONGSON_CFG1_LLEXC	BIT(23)
 #define LOONGSON_CFG1_SCRAND	BIT(24)
 #define LOONGSON_CFG1_MUALP	BIT(25)
 #define LOONGSON_CFG1_KMUALEN	BIT(26)
 #define LOONGSON_CFG1_ITLBT	BIT(27)
 #define LOONGSON_CFG1_LSUPERF	BIT(28)
 #define LOONGSON_CFG1_SFBP	BIT(29)
 #define LOONGSON_CFG1_CDMAP	BIT(30)

 #define LOONGSON_CFG1_FPREV_OFFSET	1

 #define LOONGSON_CFG2 0x2
 #define LOONGSON_CFG2_LEXT1	BIT(0)
 #define LOONGSON_CFG2_LEXT2	BIT(1)
 #define LOONGSON_CFG2_LEXT3	BIT(2)
 #define LOONGSON_CFG2_LSPW	BIT(3)
 #define LOONGSON_CFG2_LBT1	BIT(4)
 #define LOONGSON_CFG2_LBT2	BIT(5)
 #define LOONGSON_CFG2_LBT3	BIT(6)
 #define LOONGSON_CFG2_LBTMMU	BIT(7)
 #define LOONGSON_CFG2_LPMP	BIT(8)
 #define LOONGSON_CFG2_LPMREV	GENMASK(11, 9)
 #define LOONGSON_CFG2_LAMO	BIT(12)
 #define LOONGSON_CFG2_LPIXU	BIT(13)
 #define LOONGSON_CFG2_LPIXNU	BIT(14)
 #define LOONGSON_CFG2_LVZP	BIT(15)
 #define LOONGSON_CFG2_LVZREV	GENMASK(18, 16)
 #define LOONGSON_CFG2_LGFTP	BIT(19)
 #define LOONGSON_CFG2_LGFTPREV	GENMASK(22, 20)
 #define LOONGSON_CFG2_LLFTP	BIT(23)
 #define LOONGSON_CFG2_LLFTPREV	GENMASK(26, 24)
 #define LOONGSON_CFG2_LCSRP	BIT(27)
 #define LOONGSON_CFG2_LDISBLIKELY	BIT(28)

 #define LOONGSON_CFG2_LPMREV_OFFSET	9
 #define LOONGSON_CFG2_LPM_REV1		(1 << LOONGSON_CFG2_LPMREV_OFFSET)
 #define LOONGSON_CFG2_LPM_REV2		(2 << LOONGSON_CFG2_LPMREV_OFFSET)
 #define LOONGSON_CFG2_LVZREV_OFFSET	16
 #define LOONGSON_CFG2_LVZ_REV1		(1 << LOONGSON_CFG2_LVZREV_OFFSET)
 #define LOONGSON_CFG2_LVZ_REV2		(2 << LOONGSON_CFG2_LVZREV_OFFSET)

 #define LOONGSON_CFG3 0x3
 #define LOONGSON_CFG3_LCAMP	BIT(0)
 #define LOONGSON_CFG3_LCAMREV	GENMASK(3, 1)
 #define LOONGSON_CFG3_LCAMNUM	GENMASK(11, 4)
 #define LOONGSON_CFG3_LCAMKW	GENMASK(19, 12)
 #define LOONGSON_CFG3_LCAMVW	GENMASK(27, 20)

 #define LOONGSON_CFG3_LCAMREV_OFFSET	1
 #define LOONGSON_CFG3_LCAM_REV1		(1 << LOONGSON_CFG3_LCAMREV_OFFSET)
 #define LOONGSON_CFG3_LCAM_REV2		(2 << LOONGSON_CFG3_LCAMREV_OFFSET)
 #define LOONGSON_CFG3_LCAMNUM_OFFSET	4
 #define LOONGSON_CFG3_LCAMNUM_REV1	(0x3f << LOONGSON_CFG3_LCAMNUM_OFFSET)
 #define LOONGSON_CFG3_LCAMKW_OFFSET	12
 #define LOONGSON_CFG3_LCAMKW_REV1	(0x27 << LOONGSON_CFG3_LCAMKW_OFFSET)
 #define LOONGSON_CFG3_LCAMVW_OFFSET	20
 #define LOONGSON_CFG3_LCAMVW_REV1	(0x3f << LOONGSON_CFG3_LCAMVW_OFFSET)

 #define LOONGSON_CFG4 0x4
 #define LOONGSON_CFG4_CCFREQ	GENMASK(31, 0)

 #define LOONGSON_CFG5 0x5
 #define LOONGSON_CFG5_CFM	GENMASK(15, 0)
 #define LOONGSON_CFG5_CFD	GENMASK(31, 16)

 #define LOONGSON_CFG6 0x6

 #define LOONGSON_CFG7 0x7
 #define LOONGSON_CFG7_GCCAEQRP	BIT(0)
 #define LOONGSON_CFG7_UCAWINP	BIT(1)

 static inline bool cpu_has_csr(void)
 {
 	if (cpu_has_cfg())
 		return (read_cpucfg(LOONGSON_CFG2) & LOONGSON_CFG2_LCSRP);

 	return false;
 }

 static inline u32 csr_readl(u32 reg)
 {
 	u32 __res;

 	/* RDCSR reg, val */
 	__asm__ __volatile__(
 		"parse_r __res,%0\n\t"
 		"parse_r reg,%1\n\t"
 		".insn \n\t"
 		".word (0xc8000118 | (reg << 21) | (__res << 11))\n\t"
 		:"=r"(__res)
 		:"r"(reg)
 		:
 		);
 	return __res;
 }

 static inline u64 csr_readq(u32 reg)
 {
 	u64 __res;

 	/* DRDCSR reg, val */
 	__asm__ __volatile__(
 		"parse_r __res,%0\n\t"
 		"parse_r reg,%1\n\t"
 		".insn \n\t"
 		".word (0xc8020118 | (reg << 21) | (__res << 11))\n\t"
 		:"=r"(__res)
 		:"r"(reg)
 		:
 		);
 	return __res;
 }

 static inline void csr_writel(u32 val, u32 reg)
 {
 	/* WRCSR reg, val */
 	__asm__ __volatile__(
 		"parse_r reg,%0\n\t"
 		"parse_r val,%1\n\t"
 		".insn \n\t"
 		".word (0xc8010118 | (reg << 21) | (val << 11))\n\t"
 		:
 		:"r"(reg),"r"(val)
 		:
 		);
 }

 static inline void csr_writeq(u64 val, u32 reg)
 {
 	/* DWRCSR reg, val */
 	__asm__ __volatile__(
 		"parse_r reg,%0\n\t"
 		"parse_r val,%1\n\t"
 		".insn \n\t"
 		".word (0xc8030118 | (reg << 21) | (val << 11))\n\t"
 		:
 		:"r"(reg),"r"(val)
 		:
 		);
 }

 /* Public CSR Register can also be accessed with regular addresses */
 #define CSR_PUBLIC_MMIO_BASE 0x1fe00000

 #define MMIO_CSR(x)		(void *)TO_UNCAC(CSR_PUBLIC_MMIO_BASE + x)

 #define LOONGSON_CSR_FEATURES	0x8
 #define LOONGSON_CSRF_TEMP	BIT(0)
 #define LOONGSON_CSRF_NODECNT	BIT(1)
 #define LOONGSON_CSRF_MSI	BIT(2)
 #define LOONGSON_CSRF_EXTIOI	BIT(3)
 #define LOONGSON_CSRF_IPI	BIT(4)
 #define LOONGSON_CSRF_FREQ	BIT(5)

 #define LOONGSON_CSR_VENDOR	0x10 /* Vendor name string, should be "Loongson" */
 #define LOONGSON_CSR_CPUNAME	0x20 /* Processor name string */
 #define LOONGSON_CSR_NODECNT	0x408
 #define LOONGSON_CSR_CPUTEMP	0x428

 /* PerCore CSR, only accessable by local cores */
 #define LOONGSON_CSR_IPI_STATUS	0x1000
 #define LOONGSON_CSR_IPI_EN	0x1004
 #define LOONGSON_CSR_IPI_SET	0x1008
 #define LOONGSON_CSR_IPI_CLEAR	0x100c
 #define LOONGSON_CSR_IPI_SEND	0x1040
 #define CSR_IPI_SEND_IP_SHIFT	0
 #define CSR_IPI_SEND_CPU_SHIFT	16
 #define CSR_IPI_SEND_BLOCK	BIT(31)

 static inline u64 drdtime(void)
 {
 	int rID = 0;
 	u64 val = 0;

 	__asm__ __volatile__(
 		"parse_r rID,%0\n\t"
 		"parse_r val,%1\n\t"
 		".insn \n\t"
 		".word (0xc8090118 | (rID << 21) | (val << 11))\n\t"
 		:"=r"(rID),"=r"(val)
 		:
 		);
 	return val;
 }

 #endif
	/*
	* Read/Write Loongson Extension Registers
	*/

	#ifndef _LOONGSON_REGS_H_
	#define _LOONGSON_REGS_H_

	#include <linux/types.h>
	#include <linux/bits.h>

	#include <asm/mipsregs.h>
	#include <asm/cpu.h>

	static inline bool cpu_has_cfg(void)
	{
	return ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64G);
	}

	static inline u32 read_cpucfg(u32 reg)
	{
	u32 __res;

	__asm__ __volatile__(
	"parse_r __res,%0\n\t"
	"parse_r reg,%1\n\t"
	".insn \n\t"
	".word (0xc8080118 \| (reg << 21) \| (__res << 11))\n\t"
	:"=r"(__res)
	:"r"(reg)
	:
	);
	return __res;
	}

	/* Bit Domains for CFG registers */
	#define LOONGSON_CFG0 0x0
	#define LOONGSON_CFG0_PRID GENMASK(31, 0)

	#define LOONGSON_CFG1 0x1
	#define LOONGSON_CFG1_FP BIT(0)
	#define LOONGSON_CFG1_FPREV GENMASK(3, 1)
	#define LOONGSON_CFG1_MMI BIT(4)
	#define LOONGSON_CFG1_MSA1 BIT(5)
	#define LOONGSON_CFG1_MSA2 BIT(6)
	#define LOONGSON_CFG1_CGP BIT(7)
	#define LOONGSON_CFG1_WRP BIT(8)
	#define LOONGSON_CFG1_LSX1 BIT(9)
	#define LOONGSON_CFG1_LSX2 BIT(10)
	#define LOONGSON_CFG1_LASX BIT(11)
	#define LOONGSON_CFG1_R6FXP BIT(12)
	#define LOONGSON_CFG1_R6CRCP BIT(13)
	#define LOONGSON_CFG1_R6FPP BIT(14)
	#define LOONGSON_CFG1_CNT64 BIT(15)
	#define LOONGSON_CFG1_LSLDR0 BIT(16)
	#define LOONGSON_CFG1_LSPREF BIT(17)
	#define LOONGSON_CFG1_LSPREFX BIT(18)
	#define LOONGSON_CFG1_LSSYNCI BIT(19)
	#define LOONGSON_CFG1_LSUCA BIT(20)
	#define LOONGSON_CFG1_LLSYNC BIT(21)
	#define LOONGSON_CFG1_TGTSYNC BIT(22)
	#define LOONGSON_CFG1_LLEXC BIT(23)
	#define LOONGSON_CFG1_SCRAND BIT(24)
	#define LOONGSON_CFG1_MUALP BIT(25)
	#define LOONGSON_CFG1_KMUALEN BIT(26)
	#define LOONGSON_CFG1_ITLBT BIT(27)
	#define LOONGSON_CFG1_LSUPERF BIT(28)
	#define LOONGSON_CFG1_SFBP BIT(29)
	#define LOONGSON_CFG1_CDMAP BIT(30)

	#define LOONGSON_CFG1_FPREV_OFFSET 1

	#define LOONGSON_CFG2 0x2
	#define LOONGSON_CFG2_LEXT1 BIT(0)
	#define LOONGSON_CFG2_LEXT2 BIT(1)
	#define LOONGSON_CFG2_LEXT3 BIT(2)
	#define LOONGSON_CFG2_LSPW BIT(3)
	#define LOONGSON_CFG2_LBT1 BIT(4)
	#define LOONGSON_CFG2_LBT2 BIT(5)
	#define LOONGSON_CFG2_LBT3 BIT(6)
	#define LOONGSON_CFG2_LBTMMU BIT(7)
	#define LOONGSON_CFG2_LPMP BIT(8)
	#define LOONGSON_CFG2_LPMREV GENMASK(11, 9)
	#define LOONGSON_CFG2_LAMO BIT(12)
	#define LOONGSON_CFG2_LPIXU BIT(13)
	#define LOONGSON_CFG2_LPIXNU BIT(14)
	#define LOONGSON_CFG2_LVZP BIT(15)
	#define LOONGSON_CFG2_LVZREV GENMASK(18, 16)
	#define LOONGSON_CFG2_LGFTP BIT(19)
	#define LOONGSON_CFG2_LGFTPREV GENMASK(22, 20)
	#define LOONGSON_CFG2_LLFTP BIT(23)
	#define LOONGSON_CFG2_LLFTPREV GENMASK(26, 24)
	#define LOONGSON_CFG2_LCSRP BIT(27)
	#define LOONGSON_CFG2_LDISBLIKELY BIT(28)

	#define LOONGSON_CFG2_LPMREV_OFFSET 9
	#define LOONGSON_CFG2_LPM_REV1 (1 << LOONGSON_CFG2_LPMREV_OFFSET)
	#define LOONGSON_CFG2_LPM_REV2 (2 << LOONGSON_CFG2_LPMREV_OFFSET)
	#define LOONGSON_CFG2_LVZREV_OFFSET 16
	#define LOONGSON_CFG2_LVZ_REV1 (1 << LOONGSON_CFG2_LVZREV_OFFSET)
	#define LOONGSON_CFG2_LVZ_REV2 (2 << LOONGSON_CFG2_LVZREV_OFFSET)

	#define LOONGSON_CFG3 0x3
	#define LOONGSON_CFG3_LCAMP BIT(0)
	#define LOONGSON_CFG3_LCAMREV GENMASK(3, 1)
	#define LOONGSON_CFG3_LCAMNUM GENMASK(11, 4)
	#define LOONGSON_CFG3_LCAMKW GENMASK(19, 12)
	#define LOONGSON_CFG3_LCAMVW GENMASK(27, 20)

	#define LOONGSON_CFG3_LCAMREV_OFFSET 1
	#define LOONGSON_CFG3_LCAM_REV1 (1 << LOONGSON_CFG3_LCAMREV_OFFSET)
	#define LOONGSON_CFG3_LCAM_REV2 (2 << LOONGSON_CFG3_LCAMREV_OFFSET)
	#define LOONGSON_CFG3_LCAMNUM_OFFSET 4
	#define LOONGSON_CFG3_LCAMNUM_REV1 (0x3f << LOONGSON_CFG3_LCAMNUM_OFFSET)
	#define LOONGSON_CFG3_LCAMKW_OFFSET 12
	#define LOONGSON_CFG3_LCAMKW_REV1 (0x27 << LOONGSON_CFG3_LCAMKW_OFFSET)
	#define LOONGSON_CFG3_LCAMVW_OFFSET 20
	#define LOONGSON_CFG3_LCAMVW_REV1 (0x3f << LOONGSON_CFG3_LCAMVW_OFFSET)

	#define LOONGSON_CFG4 0x4
	#define LOONGSON_CFG4_CCFREQ GENMASK(31, 0)

	#define LOONGSON_CFG5 0x5
	#define LOONGSON_CFG5_CFM GENMASK(15, 0)
	#define LOONGSON_CFG5_CFD GENMASK(31, 16)

	#define LOONGSON_CFG6 0x6

	#define LOONGSON_CFG7 0x7
	#define LOONGSON_CFG7_GCCAEQRP BIT(0)
	#define LOONGSON_CFG7_UCAWINP BIT(1)

	static inline bool cpu_has_csr(void)
	{
	if (cpu_has_cfg())
	return (read_cpucfg(LOONGSON_CFG2) & LOONGSON_CFG2_LCSRP);

	return false;
	}

	static inline u32 csr_readl(u32 reg)
	{
	u32 __res;

	/* RDCSR reg, val */
	__asm__ __volatile__(
	"parse_r __res,%0\n\t"
	"parse_r reg,%1\n\t"
	".insn \n\t"
	".word (0xc8000118 \| (reg << 21) \| (__res << 11))\n\t"
	:"=r"(__res)
	:"r"(reg)
	:
	);
	return __res;
	}

	static inline u64 csr_readq(u32 reg)
	{
	u64 __res;

	/* DRDCSR reg, val */
	__asm__ __volatile__(
	"parse_r __res,%0\n\t"
	"parse_r reg,%1\n\t"
	".insn \n\t"
	".word (0xc8020118 \| (reg << 21) \| (__res << 11))\n\t"
	:"=r"(__res)
	:"r"(reg)
	:
	);
	return __res;
	}

	static inline void csr_writel(u32 val, u32 reg)
	{
	/* WRCSR reg, val */
	__asm__ __volatile__(
	"parse_r reg,%0\n\t"
	"parse_r val,%1\n\t"
	".insn \n\t"
	".word (0xc8010118 \| (reg << 21) \| (val << 11))\n\t"
	:
	:"r"(reg),"r"(val)
	:
	);
	}

	static inline void csr_writeq(u64 val, u32 reg)
	{
	/* DWRCSR reg, val */
	__asm__ __volatile__(
	"parse_r reg,%0\n\t"
	"parse_r val,%1\n\t"
	".insn \n\t"
	".word (0xc8030118 \| (reg << 21) \| (val << 11))\n\t"
	:
	:"r"(reg),"r"(val)
	:
	);
	}

	/* Public CSR Register can also be accessed with regular addresses */
	#define CSR_PUBLIC_MMIO_BASE 0x1fe00000

	#define MMIO_CSR(x) (void *)TO_UNCAC(CSR_PUBLIC_MMIO_BASE + x)

	#define LOONGSON_CSR_FEATURES 0x8
	#define LOONGSON_CSRF_TEMP BIT(0)
	#define LOONGSON_CSRF_NODECNT BIT(1)
	#define LOONGSON_CSRF_MSI BIT(2)
	#define LOONGSON_CSRF_EXTIOI BIT(3)
	#define LOONGSON_CSRF_IPI BIT(4)
	#define LOONGSON_CSRF_FREQ BIT(5)

	#define LOONGSON_CSR_VENDOR 0x10 /* Vendor name string, should be "Loongson" */
	#define LOONGSON_CSR_CPUNAME 0x20 /* Processor name string */
	#define LOONGSON_CSR_NODECNT 0x408
	#define LOONGSON_CSR_CPUTEMP 0x428

	/* PerCore CSR, only accessable by local cores */
	#define LOONGSON_CSR_IPI_STATUS 0x1000
	#define LOONGSON_CSR_IPI_EN 0x1004
	#define LOONGSON_CSR_IPI_SET 0x1008
	#define LOONGSON_CSR_IPI_CLEAR 0x100c
	#define LOONGSON_CSR_IPI_SEND 0x1040
	#define CSR_IPI_SEND_IP_SHIFT 0
	#define CSR_IPI_SEND_CPU_SHIFT 16
	#define CSR_IPI_SEND_BLOCK BIT(31)

	static inline u64 drdtime(void)
	{
	int rID = 0;
	u64 val = 0;

	__asm__ __volatile__(
	"parse_r rID,%0\n\t"
	"parse_r val,%1\n\t"
	".insn \n\t"
	".word (0xc8090118 \| (rID << 21) \| (val << 11))\n\t"
	:"=r"(rID),"=r"(val)
	:
	);
	return val;
	}

	#endif