Commit 8db53331 authored by Mikhail Karpenko's avatar Mikhail Karpenko

Add a bit more debug output to AHCI driver

parent 04b8faaf
......@@ -47,6 +47,9 @@
#define PROP_NAME_CLB_OFFS "clb_offs"
#define PROP_NAME_FB_OFFS "fb_offs"
#define DATASCOPE_OFFSET 0x1000
#define DATASCOPE_SIZE 0x200
static struct ata_port_operations ahci_elphel_ops;
static const struct ata_port_info ahci_elphel_port_info;
static struct scsi_host_template ahci_platform_sht;
......@@ -79,8 +82,9 @@ static inline void reset_chunks(struct fvec *vects, int all);
static int check_chunks(struct fvec *vects);
static void dump_sg_list(const struct device *dev, const struct fvec *sgl, size_t elems);
static void dump_sg_list_uncond(const struct fvec *sgl, size_t elems);
static void dump_iomem(void __iomem *mmio);
static void dump_iomem(void __iomem *mmio, size_t sz, dma_addr_t dma_addr);
static void dump_dpriv_fields(struct elphel_ahci_priv *dpriv);
static void dump_current_state(struct elphel_ahci_priv *dpriv);
static ssize_t set_load_flag(struct device *dev, struct device_attribute *attr,
const char *buff, size_t buff_sz)
......@@ -219,7 +223,6 @@ static irqreturn_t elphel_irq_handler(int irq, void * dev_instance)
struct elphel_ahci_priv *dpriv = hpriv->plat_data;
uint32_t irq_stat, host_irq_stat;
if (dpriv->flags & IRQ_SIMPLE) {
/* handle interrupt from internal command */
host_irq_stat = readl(hpriv->mmio + HOST_IRQ_STAT);
......@@ -1186,15 +1189,14 @@ void error_handler(struct elphel_ahci_priv *dpriv)
struct ahci_host_priv *hpriv = host->private_data;
struct ata_port *ap = host->ports[DEFAULT_PORT_NUM];
struct ata_link *link = &ap->link;
struct ahci_port_priv *pp = ap->private_data;
int pmp = link->pmp;
int rc;
unsigned int class;
unsigned long deadline = jiffies + msecs_to_jiffies(DEFAULT_CMD_TIMEOUT);
dump_iomem(hpriv->mmio);
dump_dpriv_fields(dpriv);
dump_sg_list_uncond(dpriv->sgl, dpriv->sg_elems);
dump_current_state(dpriv);
printk(KERN_DEBUG "reset command queue and all flags\n");
reset_all_commands(dpriv);
......@@ -1713,15 +1715,16 @@ static void dump_sg_list_uncond(const struct fvec *sgl, size_t elems)
printk(KERN_DEBUG "===== end of S/G list =====\n");
}
/** Debug function, make dump of controller's memory*/
static void dump_iomem(void __iomem *mmio)
/** Debug function, make dump of controller's memory, sz is in DW */
static void dump_iomem(void __iomem *mmio, size_t sz, dma_addr_t dma_addr)
{
int i, col = 0, pos = 0;
u32 val;
char str[512] = {0};
printk(KERN_DEBUG "dump AHCI iomem:\n");
for (i = 0; i < 100; i++) {
if (dma_addr)
printk(KERN_DEBUG "DMA address: 0x%08x\n", dma_addr);
for (i = 0; i < sz; i++) {
val = ioread32(mmio + 4 * i);
pos += snprintf(&str[pos], 16, "0x%08x ", val);
col++;
......@@ -1731,7 +1734,8 @@ static void dump_iomem(void __iomem *mmio)
printk(KERN_DEBUG "%s\n", str);
}
}
printk(KERN_DEBUG "\n");
if (pos != 0)
printk(KERN_DEBUG "%s\n", str);
}
static void dump_dpriv_fields(struct elphel_ahci_priv *dpriv)
......@@ -1745,6 +1749,37 @@ static void dump_dpriv_fields(struct elphel_ahci_priv *dpriv)
dpriv->lba_ptr.wr_count, dpriv->curr_cmd, dpriv->max_data_sz, dpriv->curr_data_chunk, dpriv->curr_data_offset);
}
static void dump_current_state(struct elphel_ahci_priv *dpriv)
{
struct ata_host *host = dev_get_drvdata(dpriv->dev);
struct ahci_host_priv *hpriv = host->private_data;
struct ata_port *ap = host->ports[DEFAULT_PORT_NUM];
struct ata_link *link = &ap->link;
struct ahci_port_priv *pp = ap->private_data;
uint32_t *datascope_ptr;
printk(KERN_DEBUG "===== HBA memory dump ======\n");
dump_iomem(hpriv->mmio, 100, dpriv->base_addr);
printk(KERN_DEBUG "===== command list structure dump =====\n");
dump_iomem(pp->cmd_slot, 8, pp->cmd_slot_dma);
printk(KERN_DEBUG "===== command FIS dump =====\n");
dump_iomem(pp->cmd_tbl, 16, pp->cmd_tbl_dma);
printk(KERN_DEBUG "===== received FIS memory (last FIS received) dump =====\n");
dump_iomem(pp->rx_fis, 64, pp->rx_fis_dma);
// datascope_ptr = ioremap_nocache(dpriv->base_addr + DATASCOPE_OFFSET, DATASCOPE_SIZE);
// if (datascope_ptr) {
// printk(KERN_DEBUG "===== datascope (debug) data dump =====\n");
// dump_iomem(datascope_ptr, 512, dpriv->base_addr + DATASCOPE_OFFSET);
// iounmap(datascope_ptr);
// } else {
// printk(KERN_DEBUG "unable to ioremap datascope region\n");
// }
dump_dpriv_fields(dpriv);
dump_sg_list_uncond(dpriv->sgl, dpriv->sg_elems);
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Elphel, Inc.");
MODULE_DESCRIPTION("Elphel AHCI SATA platform driver for elphel393 camera");
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