^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This program is free software; you can redistribute it and/or modify it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * under the terms of the GNU General Public License as published by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Free Software Foundation; either version 2 of the License, or (at your
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * You should have received a copy of the GNU General Public License along
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * with this program; if not, write to the Free Software Foundation, Inc.,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * 675 Mass Ave, Cambridge, MA 02139, USA.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "bcm47xx_private.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <asm/irq_cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <bcm47xx.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) asmlinkage void plat_irq_dispatch(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u32 cause;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) cause = read_c0_cause() & read_c0_status() & CAUSEF_IP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) clear_c0_status(cause);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (cause & CAUSEF_IP7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) do_IRQ(7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) if (cause & CAUSEF_IP2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) do_IRQ(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (cause & CAUSEF_IP3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) do_IRQ(3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (cause & CAUSEF_IP4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) do_IRQ(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (cause & CAUSEF_IP5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) do_IRQ(5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (cause & CAUSEF_IP6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) do_IRQ(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define DEFINE_HWx_IRQDISPATCH(x) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static void bcm47xx_hw ## x ## _irqdispatch(void) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) do_IRQ(x); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) DEFINE_HWx_IRQDISPATCH(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) DEFINE_HWx_IRQDISPATCH(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) DEFINE_HWx_IRQDISPATCH(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) DEFINE_HWx_IRQDISPATCH(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) DEFINE_HWx_IRQDISPATCH(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) DEFINE_HWx_IRQDISPATCH(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) void __init arch_init_irq(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * This is the first arch callback after mm_init (we can use kmalloc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * so let's finish bus initialization now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) bcm47xx_bus_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #ifdef CONFIG_BCM47XX_BCMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) bcma_write32(bcm47xx_bus.bcma.bus.drv_mips.core,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) BCMA_MIPS_MIPS74K_INTMASK(5), 1 << 31);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * the kernel reads the timer irq from some register and thinks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * it's #5, but we offset it by 2 and route to #7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) cp0_compare_irq = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) mips_cpu_irq_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (cpu_has_vint) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) pr_info("Setting up vectored interrupts\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) set_vi_handler(2, bcm47xx_hw2_irqdispatch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) set_vi_handler(3, bcm47xx_hw3_irqdispatch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) set_vi_handler(4, bcm47xx_hw4_irqdispatch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) set_vi_handler(5, bcm47xx_hw5_irqdispatch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) set_vi_handler(6, bcm47xx_hw6_irqdispatch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) set_vi_handler(7, bcm47xx_hw7_irqdispatch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags