mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 05:06:55 +07:00
8f0bcbcab0
The SoC serial port driver uses a high priority interrupt to handle tx of characters in the tx ring buffer. The driver needs to disable/enable this IRQ from outside of irq context. The original code to do this is not foolproof on SMP machines because the IRQ running on one core could still access the serial port for a short time after the driver running on another core disables the interrupt. This patch adds a flag to tell the IRQ handler that the driver wants to disable the interrupt. After seeing the flag, the IRQ handler will immediately disable the interrupt and exit. After setting the flag, the driver will wait for interrupt to be disabled by the IRQ handler. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com>
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/*
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* Generate definitions needed by assembly language modules.
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* This code generates raw asm output which is post-processed
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* to extract and format the required data.
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*/
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#include <linux/sched.h>
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#include <linux/signal.h>
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#include <linux/personality.h>
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#include <linux/kbuild.h>
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#include <asm/ucontext.h>
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#include <asm/processor.h>
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#include <asm/thread_info.h>
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#include <asm/ptrace.h>
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#include "sigframe.h"
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#include "mn10300-serial.h"
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void foo(void)
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{
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OFFSET(SIGCONTEXT_d0, sigcontext, d0);
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OFFSET(SIGCONTEXT_d1, sigcontext, d1);
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BLANK();
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OFFSET(TI_task, thread_info, task);
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OFFSET(TI_exec_domain, thread_info, exec_domain);
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OFFSET(TI_frame, thread_info, frame);
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OFFSET(TI_flags, thread_info, flags);
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OFFSET(TI_cpu, thread_info, cpu);
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OFFSET(TI_preempt_count, thread_info, preempt_count);
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OFFSET(TI_addr_limit, thread_info, addr_limit);
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OFFSET(TI_restart_block, thread_info, restart_block);
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BLANK();
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OFFSET(REG_D0, pt_regs, d0);
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OFFSET(REG_D1, pt_regs, d1);
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OFFSET(REG_D2, pt_regs, d2);
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OFFSET(REG_D3, pt_regs, d3);
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OFFSET(REG_A0, pt_regs, a0);
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OFFSET(REG_A1, pt_regs, a1);
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OFFSET(REG_A2, pt_regs, a2);
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OFFSET(REG_A3, pt_regs, a3);
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OFFSET(REG_E0, pt_regs, e0);
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OFFSET(REG_E1, pt_regs, e1);
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OFFSET(REG_E2, pt_regs, e2);
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OFFSET(REG_E3, pt_regs, e3);
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OFFSET(REG_E4, pt_regs, e4);
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OFFSET(REG_E5, pt_regs, e5);
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OFFSET(REG_E6, pt_regs, e6);
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OFFSET(REG_E7, pt_regs, e7);
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OFFSET(REG_SP, pt_regs, sp);
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OFFSET(REG_EPSW, pt_regs, epsw);
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OFFSET(REG_PC, pt_regs, pc);
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OFFSET(REG_LAR, pt_regs, lar);
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OFFSET(REG_LIR, pt_regs, lir);
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OFFSET(REG_MDR, pt_regs, mdr);
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OFFSET(REG_MCVF, pt_regs, mcvf);
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OFFSET(REG_MCRL, pt_regs, mcrl);
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OFFSET(REG_MCRH, pt_regs, mcrh);
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OFFSET(REG_MDRQ, pt_regs, mdrq);
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OFFSET(REG_ORIG_D0, pt_regs, orig_d0);
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OFFSET(REG_NEXT, pt_regs, next);
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DEFINE(REG__END, sizeof(struct pt_regs));
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BLANK();
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OFFSET(THREAD_UREGS, thread_struct, uregs);
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OFFSET(THREAD_PC, thread_struct, pc);
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OFFSET(THREAD_SP, thread_struct, sp);
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OFFSET(THREAD_A3, thread_struct, a3);
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OFFSET(THREAD_USP, thread_struct, usp);
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#ifdef CONFIG_FPU
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OFFSET(THREAD_FPU_FLAGS, thread_struct, fpu_flags);
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OFFSET(THREAD_FPU_STATE, thread_struct, fpu_state);
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DEFINE(__THREAD_USING_FPU, THREAD_USING_FPU);
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DEFINE(__THREAD_HAS_FPU, THREAD_HAS_FPU);
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#endif /* CONFIG_FPU */
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BLANK();
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OFFSET(TASK_THREAD, task_struct, thread);
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BLANK();
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DEFINE(CLONE_VM_asm, CLONE_VM);
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DEFINE(CLONE_FS_asm, CLONE_FS);
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DEFINE(CLONE_FILES_asm, CLONE_FILES);
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DEFINE(CLONE_SIGHAND_asm, CLONE_SIGHAND);
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DEFINE(CLONE_UNTRACED_asm, CLONE_UNTRACED);
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DEFINE(SIGCHLD_asm, SIGCHLD);
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BLANK();
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OFFSET(EXEC_DOMAIN_handler, exec_domain, handler);
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OFFSET(RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext);
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DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
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OFFSET(__rx_buffer, mn10300_serial_port, rx_buffer);
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OFFSET(__rx_inp, mn10300_serial_port, rx_inp);
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OFFSET(__rx_outp, mn10300_serial_port, rx_outp);
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OFFSET(__uart_state, mn10300_serial_port, uart.state);
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OFFSET(__tx_xchar, mn10300_serial_port, tx_xchar);
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OFFSET(__tx_flags, mn10300_serial_port, tx_flags);
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OFFSET(__intr_flags, mn10300_serial_port, intr_flags);
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OFFSET(__rx_icr, mn10300_serial_port, rx_icr);
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OFFSET(__tx_icr, mn10300_serial_port, tx_icr);
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OFFSET(__tm_icr, mn10300_serial_port, _tmicr);
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OFFSET(__iobase, mn10300_serial_port, _iobase);
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DEFINE(__UART_XMIT_SIZE, UART_XMIT_SIZE);
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OFFSET(__xmit_buffer, uart_state, xmit.buf);
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OFFSET(__xmit_head, uart_state, xmit.head);
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OFFSET(__xmit_tail, uart_state, xmit.tail);
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}
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