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Mock Turtle
Commit e5042047 authored by Federico Vaga's avatar Federico Vaga
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Merge branch 'feature/debugger-mmap' into develop

parents 67ce2658 e0e57217
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software/include/hw/mockturtle_addresses.h
View file @ e5042047
......@@ -6,6 +6,8 @@
/* Host addresses. */
#define TRTL_ADDR_OFFSET_HMQ 0x00000000
#define TRTL_ADDR_OFFSET_CSR 0x0000C000
/* FIXME update memorymap to have DBG PAGE_ALIGNED */
#define TRTL_ADDR_OFFSET_DBG TRTL_ADDR_OFFSET_CSR
#define TRTL_ADDR_OFFSET_CONFIG_ROM 0x0000E000
#define TRTL_ADDR_OFFSET_SHM 0x00010000
......
software/kernel/Makefile
View file @ e5042047
......@@ -26,6 +26,8 @@ mockturtle-y += mockturtle-cpu.o
mockturtle-y += mockturtle-hmq.o
mockturtle-y += mockturtle-tty.o
mockturtle-y += mockturtle-dbg.o
mockturtle-y += mockturtle-dbg.o
mockturtle-y += mockturtle-compat.o
all modules:
......
software/kernel/mockturtle-compat.c 0 → 100644
View file @ e5042047
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2014-2019 CERN (www.cern.ch)
* Author: Federico Vaga <federico.vaga@cern.ch>
*/
#include <linux/version.h>
#include <linux/mm.h>
#include "mockturtle-compat.h"
#if KERNEL_VERSION(3, 9, 0) > LINUX_VERSION_CODE
/* Copied from v3.10 */
int vm_iomap_memory(struct vm_area_struct *vma, phys_addr_t start,
unsigned long len)
{
unsigned long vm_len, pfn, pages;
/* Check that the physical memory area passed in looks valid */
if (start + len < start)
return -EINVAL;
/*
* You *really* shouldn't map things that aren't page-aligned,
* but we've historically allowed it because IO memory might
* just have smaller alignment.
*/
len += start & ~PAGE_MASK;
pfn = start >> PAGE_SHIFT;
pages = (len + ~PAGE_MASK) >> PAGE_SHIFT;
if (pfn + pages < pfn)
return -EINVAL;
/* We start the mapping 'vm_pgoff' pages into the area */
if (vma->vm_pgoff > pages)
return -EINVAL;
pfn += vma->vm_pgoff;
pages -= vma->vm_pgoff;
/* Can we fit all of the mapping? */
vm_len = vma->vm_end - vma->vm_start;
if (vm_len >> PAGE_SHIFT > pages)
return -EINVAL;
/* Ok, let it rip */
return io_remap_pfn_range(vma, vma->vm_start, pfn, vm_len, vma->vm_page_prot);
}
#endif
software/kernel/mockturtle-compat.h 0 → 100644
View file @ e5042047
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2014-2016 CERN (www.cern.ch)
* Author: Federico Vaga <federico.vaga@cern.ch>
*/
#ifndef __TRTL_COMPAT_H__
#define __TRTL_COMPAT_H__
#include <linux/version.h>
#if KERNEL_VERSION(3, 9, 0) > LINUX_VERSION_CODE
int vm_iomap_memory(struct vm_area_struct *vma, phys_addr_t start,
unsigned long len);
#endif
#endif
software/kernel/mockturtle-dbg.c
View file @ e5042047
......@@ -8,9 +8,11 @@
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/seq_file.h>
#include <linux/mm.h>
#include <hw/mockturtle_cpu_csr.h>
#include "mockturtle-drv.h"
#include "mockturtle-compat.h"
static int trtl_dbg_info_seq_read(struct seq_file *s, void *data)
{
......@@ -83,6 +85,47 @@ static const struct file_operations trtl_dbg_info_ops = {
.release = single_release,
};
#define TRTL_DBG_PORT_SIZE PAGE_SIZE /* FIXME */
static int trtl_dbg_debugger_mmap(struct file *file,
struct vm_area_struct *vma)
{
struct trtl_dev *trtl = file->private_data;
unsigned long vsize;
int ret;
struct platform_device *pdev = to_platform_device(trtl->dev.parent);
struct resource *r;
if (vma->vm_pgoff > 0) {
dev_err(&trtl->dev,
"Debug Port mapping does not accept offsets\n");
return -EINVAL;
}
vsize = vma->vm_end - vma->vm_start;
if (vsize > TRTL_DBG_PORT_SIZE) {
dev_err(&trtl->dev,
"Debug Port mapping can't map more that %lu bytes (%lu)\n",
TRTL_DBG_PORT_SIZE, vsize);
return -EINVAL;
}
vma->vm_flags |= VM_IO | VM_DONTCOPY | VM_DONTEXPAND;
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
r = platform_get_resource(pdev, IORESOURCE_MEM, TRTL_MEM_BASE);
return vm_iomap_memory(vma,
r->start + TRTL_ADDR_OFFSET_DBG,
TRTL_DBG_PORT_SIZE);
return ret;
}
static const struct file_operations trtl_dbg_debugger_ops = {
.owner = THIS_MODULE,
.open = simple_open,
.mmap = trtl_dbg_debugger_mmap,
};
/**
* It creates the debug info file
......@@ -90,6 +133,8 @@ static const struct file_operations trtl_dbg_info_ops = {
*/
void trtl_debugfs_init(struct trtl_dev *trtl)
{
char name[20];
trtl->dbg_dir = debugfs_create_dir(dev_name(&trtl->dev), NULL);
if (IS_ERR_OR_NULL(trtl->dbg_dir)) {
dev_err(&trtl->dev, "Cannot create debugfs\n");
......@@ -106,6 +151,16 @@ void trtl_debugfs_init(struct trtl_dev *trtl)
PTR_ERR(trtl->dbg_info));
trtl->dbg_info = NULL;
}
snprintf(name, 20, "%s-dbg", dev_name(&trtl->dev));
trtl->debugger = debugfs_create_file(name, 0664, trtl->dbg_dir,
trtl, &trtl_dbg_debugger_ops);
if (IS_ERR_OR_NULL(trtl->debugger)) {
dev_err(&trtl->dev,
"Cannot create debugfs file: %ld\n",
PTR_ERR(trtl->debugger));
trtl->debugger = NULL;
}
}
......
software/kernel/mockturtle-drv.h
View file @ e5042047
......@@ -259,6 +259,7 @@ struct trtl_cpu {
* single IRQ. It regulates the HMQ IRQ handler
* @last_seq: last sequence number used. The same seq number cannot be used
* on different HMQ on the same CPU
* @debugger: debugfs interface for gdbserver
*/
struct trtl_dev {
struct device dev;
......@@ -280,6 +281,7 @@ struct trtl_dev {
struct dentry *dbg_info;
unsigned int max_irq_loop;
uint32_t last_seq;
struct dentry *debugger;
};
static inline u32 trtl_ioread(struct trtl_dev *trtl, void *addr)
......
software/tools/.gitignore
View file @ e5042047
......@@ -7,3 +7,4 @@ mockturtle-smem
mockturtle-ping
mockturtle-variable
mockturtle-buffer
mockturtle-gdbserver
\ No newline at end of file
software/tools/Makefile
View file @ e5042047
......@@ -27,6 +27,7 @@ PROGS += mockturtle-smem
PROGS += mockturtle-ping
PROGS += mockturtle-variable
PROGS += mockturtle-buffer
PROGS += mockturtle-gdbserver
all: $(PROGS)
......
software/tools/mockturtle-gdbserver.c 0 → 100644
View file @ e5042047
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