Release 4.14 arch/mips/include/asm/netlogic/xlr/pic.h
/*
* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
* reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the NetLogic
* license below:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _ASM_NLM_XLR_PIC_H
#define _ASM_NLM_XLR_PIC_H
#define PIC_CLK_HZ 66666666
#define pic_timer_freq() PIC_CLK_HZ
/* PIC hardware interrupt numbers */
#define PIC_IRT_WD_INDEX 0
#define PIC_IRT_TIMER_0_INDEX 1
#define PIC_IRT_TIMER_INDEX(i) ((i) + PIC_IRT_TIMER_0_INDEX)
#define PIC_IRT_TIMER_1_INDEX 2
#define PIC_IRT_TIMER_2_INDEX 3
#define PIC_IRT_TIMER_3_INDEX 4
#define PIC_IRT_TIMER_4_INDEX 5
#define PIC_IRT_TIMER_5_INDEX 6
#define PIC_IRT_TIMER_6_INDEX 7
#define PIC_IRT_TIMER_7_INDEX 8
#define PIC_IRT_CLOCK_INDEX PIC_IRT_TIMER_7_INDEX
#define PIC_IRT_UART_0_INDEX 9
#define PIC_IRT_UART_1_INDEX 10
#define PIC_IRT_I2C_0_INDEX 11
#define PIC_IRT_I2C_1_INDEX 12
#define PIC_IRT_PCMCIA_INDEX 13
#define PIC_IRT_GPIO_INDEX 14
#define PIC_IRT_HYPER_INDEX 15
#define PIC_IRT_PCIX_INDEX 16
/* XLS */
#define PIC_IRT_CDE_INDEX 15
#define PIC_IRT_BRIDGE_TB_XLS_INDEX 16
/* XLS */
#define PIC_IRT_GMAC0_INDEX 17
#define PIC_IRT_GMAC1_INDEX 18
#define PIC_IRT_GMAC2_INDEX 19
#define PIC_IRT_GMAC3_INDEX 20
#define PIC_IRT_XGS0_INDEX 21
#define PIC_IRT_XGS1_INDEX 22
#define PIC_IRT_HYPER_FATAL_INDEX 23
#define PIC_IRT_PCIX_FATAL_INDEX 24
#define PIC_IRT_BRIDGE_AERR_INDEX 25
#define PIC_IRT_BRIDGE_BERR_INDEX 26
#define PIC_IRT_BRIDGE_TB_XLR_INDEX 27
#define PIC_IRT_BRIDGE_AERR_NMI_INDEX 28
/* XLS */
#define PIC_IRT_GMAC4_INDEX 21
#define PIC_IRT_GMAC5_INDEX 22
#define PIC_IRT_GMAC6_INDEX 23
#define PIC_IRT_GMAC7_INDEX 24
#define PIC_IRT_BRIDGE_ERR_INDEX 25
#define PIC_IRT_PCIE_LINK0_INDEX 26
#define PIC_IRT_PCIE_LINK1_INDEX 27
#define PIC_IRT_PCIE_LINK2_INDEX 23
#define PIC_IRT_PCIE_LINK3_INDEX 24
#define PIC_IRT_PCIE_XLSB0_LINK2_INDEX 28
#define PIC_IRT_PCIE_XLSB0_LINK3_INDEX 29
#define PIC_IRT_SRIO_LINK0_INDEX 26
#define PIC_IRT_SRIO_LINK1_INDEX 27
#define PIC_IRT_SRIO_LINK2_INDEX 28
#define PIC_IRT_SRIO_LINK3_INDEX 29
#define PIC_IRT_PCIE_INT_INDEX 28
#define PIC_IRT_PCIE_FATAL_INDEX 29
#define PIC_IRT_GPIO_B_INDEX 30
#define PIC_IRT_USB_INDEX 31
/* XLS */
#define PIC_NUM_IRTS 32
#define PIC_CLOCK_TIMER 7
/* PIC Registers */
#define PIC_CTRL 0x00
#define PIC_CTRL_STE 8
/* timer enable start bit */
#define PIC_IPI 0x04
#define PIC_INT_ACK 0x06
#define WD_MAX_VAL_0 0x08
#define WD_MAX_VAL_1 0x09
#define WD_MASK_0 0x0a
#define WD_MASK_1 0x0b
#define WD_HEARBEAT_0 0x0c
#define WD_HEARBEAT_1 0x0d
#define PIC_IRT_0_BASE 0x40
#define PIC_IRT_1_BASE 0x80
#define PIC_TIMER_MAXVAL_0_BASE 0x100
#define PIC_TIMER_MAXVAL_1_BASE 0x110
#define PIC_TIMER_COUNT_0_BASE 0x120
#define PIC_TIMER_COUNT_1_BASE 0x130
#define PIC_IRT_0(picintr) (PIC_IRT_0_BASE + (picintr))
#define PIC_IRT_1(picintr) (PIC_IRT_1_BASE + (picintr))
#define PIC_TIMER_MAXVAL_0(i) (PIC_TIMER_MAXVAL_0_BASE + (i))
#define PIC_TIMER_MAXVAL_1(i) (PIC_TIMER_MAXVAL_1_BASE + (i))
#define PIC_TIMER_COUNT_0(i) (PIC_TIMER_COUNT_0_BASE + (i))
#define PIC_TIMER_COUNT_1(i) (PIC_TIMER_COUNT_0_BASE + (i))
/*
* Mapping between hardware interrupt numbers and IRQs on CPU
* we use a simple scheme to map PIC interrupts 0-31 to IRQs
* 8-39. This leaves the IRQ 0-7 for cpu interrupts like
* count/compare and FMN
*/
#define PIC_IRQ_BASE 8
#define PIC_INTR_TO_IRQ(i) (PIC_IRQ_BASE + (i))
#define PIC_IRQ_TO_INTR(i) ((i) - PIC_IRQ_BASE)
#define PIC_IRT_FIRST_IRQ PIC_IRQ_BASE
#define PIC_WD_IRQ PIC_INTR_TO_IRQ(PIC_IRT_WD_INDEX)
#define PIC_TIMER_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_0_INDEX)
#define PIC_TIMER_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_1_INDEX)
#define PIC_TIMER_2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_2_INDEX)
#define PIC_TIMER_3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_3_INDEX)
#define PIC_TIMER_4_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_4_INDEX)
#define PIC_TIMER_5_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_5_INDEX)
#define PIC_TIMER_6_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_6_INDEX)
#define PIC_TIMER_7_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_7_INDEX)
#define PIC_CLOCK_IRQ (PIC_TIMER_7_IRQ)
#define PIC_UART_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_UART_0_INDEX)
#define PIC_UART_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_UART_1_INDEX)
#define PIC_I2C_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_I2C_0_INDEX)
#define PIC_I2C_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_I2C_1_INDEX)
#define PIC_PCMCIA_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCMCIA_INDEX)
#define PIC_GPIO_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GPIO_INDEX)
#define PIC_HYPER_IRQ PIC_INTR_TO_IRQ(PIC_IRT_HYPER_INDEX)
#define PIC_PCIX_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIX_INDEX)
/* XLS */
#define PIC_CDE_IRQ PIC_INTR_TO_IRQ(PIC_IRT_CDE_INDEX)
#define PIC_BRIDGE_TB_XLS_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_TB_XLS_INDEX)
/* end XLS */
#define PIC_GMAC_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC0_INDEX)
#define PIC_GMAC_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC1_INDEX)
#define PIC_GMAC_2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC2_INDEX)
#define PIC_GMAC_3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC3_INDEX)
#define PIC_XGS_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_XGS0_INDEX)
#define PIC_XGS_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_XGS1_INDEX)
#define PIC_HYPER_FATAL_IRQ PIC_INTR_TO_IRQ(PIC_IRT_HYPER_FATAL_INDEX)
#define PIC_PCIX_FATAL_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIX_FATAL_INDEX)
#define PIC_BRIDGE_AERR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_AERR_INDEX)
#define PIC_BRIDGE_BERR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_BERR_INDEX)
#define PIC_BRIDGE_TB_XLR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_TB_XLR_INDEX)
#define PIC_BRIDGE_AERR_NMI_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_AERR_NMI_INDEX)
/* XLS defines */
#define PIC_GMAC_4_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC4_INDEX)
#define PIC_GMAC_5_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC5_INDEX)
#define PIC_GMAC_6_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC6_INDEX)
#define PIC_GMAC_7_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC7_INDEX)
#define PIC_BRIDGE_ERR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_ERR_INDEX)
#define PIC_PCIE_LINK0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_LINK0_INDEX)
#define PIC_PCIE_LINK1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_LINK1_INDEX)
#define PIC_PCIE_LINK2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_LINK2_INDEX)
#define PIC_PCIE_LINK3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_LINK3_INDEX)
#define PIC_PCIE_XLSB0_LINK2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_XLSB0_LINK2_INDEX)
#define PIC_PCIE_XLSB0_LINK3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_XLSB0_LINK3_INDEX)
#define PIC_SRIO_LINK0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_SRIO_LINK0_INDEX)
#define PIC_SRIO_LINK1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_SRIO_LINK1_INDEX)
#define PIC_SRIO_LINK2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_SRIO_LINK2_INDEX)
#define PIC_SRIO_LINK3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_SRIO_LINK3_INDEX)
#define PIC_PCIE_INT_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_INT__INDEX)
#define PIC_PCIE_FATAL_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_FATAL_INDEX)
#define PIC_GPIO_B_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GPIO_B_INDEX)
#define PIC_USB_IRQ PIC_INTR_TO_IRQ(PIC_IRT_USB_INDEX)
#define PIC_IRT_LAST_IRQ PIC_USB_IRQ
/* end XLS */
#ifndef __ASSEMBLY__
#define PIC_IRQ_IS_EDGE_TRIGGERED(irq) (((irq) >= PIC_TIMER_0_IRQ) && \
((irq) <= PIC_TIMER_7_IRQ))
#define PIC_IRQ_IS_IRT(irq) (((irq) >= PIC_IRT_FIRST_IRQ) && \
((irq) <= PIC_IRT_LAST_IRQ))
static inline int
nlm_irq_to_irt(int irq)
{
if (PIC_IRQ_IS_IRT(irq) == 0)
return -1;
return PIC_IRQ_TO_INTR(irq);
}
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static inline int
nlm_irt_to_irq(int irt)
{
return PIC_INTR_TO_IRQ(irt);
}
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static inline void
nlm_pic_enable_irt(uint64_t base, int irt)
{
uint32_t reg;
reg = nlm_read_reg(base, PIC_IRT_1(irt));
nlm_write_reg(base, PIC_IRT_1(irt), reg | (1u << 31));
}
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static inline void
nlm_pic_disable_irt(uint64_t base, int irt)
{
uint32_t reg;
reg = nlm_read_reg(base, PIC_IRT_1(irt));
nlm_write_reg(base, PIC_IRT_1(irt), reg & ~(1u << 31));
}
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static inline void
nlm_pic_send_ipi(uint64_t base, int hwt, int irq, int nmi)
{
unsigned int tid, pid;
tid = hwt & 0x3;
pid = (hwt >> 2) & 0x07;
nlm_write_reg(base, PIC_IPI,
(pid << 20) | (tid << 16) | (nmi << 8) | irq);
}
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static inline void
nlm_pic_ack(uint64_t base, int irt)
{
nlm_write_reg(base, PIC_INT_ACK, 1u << irt);
}
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static inline void
nlm_pic_init_irt(uint64_t base, int irt, int irq, int hwt, int en)
{
nlm_write_reg(base, PIC_IRT_0(irt), (1u << hwt));
/* local scheduling, invalid, level by default */
nlm_write_reg(base, PIC_IRT_1(irt),
(en << 30) | (1 << 6) | irq);
}
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static inline uint64_t
nlm_pic_read_timer(uint64_t base, int timer)
{
uint32_t up1, up2, low;
up1 = nlm_read_reg(base, PIC_TIMER_COUNT_1(timer));
low = nlm_read_reg(base, PIC_TIMER_COUNT_0(timer));
up2 = nlm_read_reg(base, PIC_TIMER_COUNT_1(timer));
if (up1 != up2) /* wrapped, get the new low */
low = nlm_read_reg(base, PIC_TIMER_COUNT_0(timer));
return ((uint64_t)up2 << 32) | low;
}
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static inline uint32_t
nlm_pic_read_timer32(uint64_t base, int timer)
{
return nlm_read_reg(base, PIC_TIMER_COUNT_0(timer));
}
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static inline void
nlm_pic_set_timer(uint64_t base, int timer, uint64_t value, int irq, int cpu)
{
uint32_t up, low;
uint64_t pic_ctrl = nlm_read_reg(base, PIC_CTRL);
int en;
en = (irq > 0);
up = value >> 32;
low = value & 0xFFFFFFFF;
nlm_write_reg(base, PIC_TIMER_MAXVAL_0(timer), low);
nlm_write_reg(base, PIC_TIMER_MAXVAL_1(timer), up);
nlm_pic_init_irt(base, PIC_IRT_TIMER_INDEX(timer), irq, cpu, 0);
/* enable the timer */
pic_ctrl |= (1 << (PIC_CTRL_STE + timer));
nlm_write_reg(base, PIC_CTRL, pic_ctrl);
}
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#endif
#endif /* _ASM_NLM_XLR_PIC_H */
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