Commit 85c72fb4 authored by Mikhail Karpenko's avatar Mikhail Karpenko

Add memory dumping

parent 7b59837c
......@@ -96,8 +96,8 @@ static int elphel_port_start(struct ata_port *ap)
// libahci_debug_state_dump(ap);
// libahci_debug_state_dump(ap);
libahci_debug_saxigp1_save(ap, 0x3000);
libahci_debug_saxigp1_save(ap, 0x3000);
//libahci_debug_saxigp1_save(ap, 0x3000);
//libahci_debug_saxigp1_save(ap, 0x3000);
return ahci_port_resume(ap);
......
......@@ -34,8 +34,13 @@ const size_t maxigp1_start = 0x80000000; // start of MAXIGP1 physical address ra
const size_t maxigp1_size = 0x3000; // size of register memory to save
const size_t buffer_offset = 0x40000; // start of dumping area (0xxxx, 1xxxx and 2xxxx are used for dma buffers
const size_t counter_offset = 0x3fff8; // save page counter and page size with this offset in the buffer
const size_t fsm_state_offset = 0xffc;
static void * ioptr = 0; // keep iomemory mapped forever
char *early_buff;
static inline u32 libahci_debug_get_fsm_state(void);
//static struct mem_buffer mem_buff;
/*
......@@ -462,6 +467,7 @@ void libahci_debug_event(const struct ata_port *port, char *msg, size_t msg_sz)
{
int len;
int i;
u32 tmp;
char *format_msg = NULL;
unsigned long flags;
unsigned int port_index = (port == NULL) ? 0 : port->port_no;
......@@ -480,8 +486,11 @@ void libahci_debug_event(const struct ata_port *port, char *msg, size_t msg_sz)
if (pos != NULL) {
//i = libahci_debug_state_dump(port);
i = libahci_debug_saxigp1_save(port, 0x3000);
tmp = libahci_debug_get_fsm_state();
len = snprintf(format_msg, LIBAHCI_DEBUG_BUFSZ, "%s [%08u; fsm: 0x%08x] %s\n", EVT_MARKER, i, tmp, msg);
spin_lock_irqsave(&pos->debug_list_lock, flags);
len = snprintf(format_msg, LIBAHCI_DEBUG_BUFSZ, "%s [%08u] %s\n", EVT_MARKER, i, msg);
for (i = 0; i < len; i++) {
pos->libahci_debug_buf[(pos->tail+ i) % LIBAHCI_DEBUG_BUFSZ] = format_msg[i];
}
......@@ -495,6 +504,10 @@ void libahci_debug_event(const struct ata_port *port, char *msg, size_t msg_sz)
}
kfree(format_msg);
}
} else {
if (early_buff) {
}
}
}
EXPORT_SYMBOL_GPL(libahci_debug_event);
......@@ -761,8 +774,16 @@ EXPORT_SYMBOL_GPL(libahci_debug_state_dump);
unsigned int libahci_debug_saxigp1_save(struct ata_port *ap, size_t dump_size)
{
struct device *dev = ap->dev;
struct device *dev;
u32 * counter_save;
void *current_ptr;
static size_t bytes_copied;
const size_t end = 0x1000000;
u32 *start_ptr;
// ap pointer is not initialized on early loading stages, skip debug output
if (ap) {
dev = ap->dev;
if (!ioptr) {
dev_err(dev, "saxigp1 memory is not mapped");
return 0; // should be non-zero when error, 0 is OK usually
......@@ -771,19 +792,27 @@ unsigned int libahci_debug_saxigp1_save(struct ata_port *ap, size_t dump_size)
dev_err(dev, "elphel_buf has not been allocated");
return 0; // should be non-zero when error, 0 is OK usually
}
}
//if (bytes_copied < pElphel_buf->size * PAGE_SIZE - dump_size) {
if (bytes_copied < end) {
counter_save = (u32*) (pElphel_buf->vaddr + counter_offset);
dev_err(dev, "Copying 0x%x bytes of data from saxigp1 to memory",dump_size);
start_ptr = (u32 *)(pElphel_buf->vaddr + buffer_offset + (page_cntr * dump_size));
//dev_err(dev, "Copying 0x%x bytes of data from saxigp1 to memory",dump_size);
memcpy_fromio(pElphel_buf->vaddr + buffer_offset + (page_cntr * dump_size), ioptr, dump_size);
counter_save[0] = page_cntr;
counter_save[1] = dump_size;
page_cntr++;
bytes_copied += dump_size;
} else {
page_cntr = 0;
}
return page_cntr;
}
EXPORT_SYMBOL_GPL(libahci_debug_saxigp1_save);
static void libahci_debug_buff_init(struct device *dev)
{
dev_info(dev, "Nothing to allocate - using elphel_buf allocated at startup");
......@@ -803,6 +832,11 @@ static void libahci_debug_buff_init(struct device *dev)
page_cntr = 0;
}
static inline u32 libahci_debug_get_fsm_state(void)
{
return ioread32(ioptr + fsm_state_offset);
}
static const struct file_operations libahci_debug_host_ops = {
.open = libahci_debug_host_open,
.read = seq_read,
......@@ -856,6 +890,17 @@ static int libahci_debug_init_sg(void)
return 0;
}
int libahci_debug_init_early(struct device *dev)
{
early_buff = kzalloc(LIBAHCI_DEBUG_BUFSZ, GFP_KERNEL);
if (!early_buff) {
dev_err(dev, "unable to allocate mem for early buffer");
return -ENOMEM;
} else {
dev_info(dev, "early buffer allocated");
}
}
int libahci_debug_init(struct ata_host *host)
{
int i;
......@@ -907,6 +952,7 @@ EXPORT_SYMBOL_GPL(libahci_debug_init);
void libahci_debug_exit(void)
{
kfree(cmd.sg_buff);
kfree(early_buff);
debugfs_remove_recursive(debug_root);
}
EXPORT_SYMBOL_GPL(libahci_debug_exit);
......
......@@ -131,5 +131,4 @@ void libahci_debug_wait_flag(void);
unsigned int libahci_debug_state_dump(struct ata_port *ap);
unsigned int libahci_debug_saxigp1_save(struct ata_port *ap, size_t dump_size);
#endif /* _LIBAHCI_DEBUG_H_ */
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