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DM: virtio-gpio: add print log

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if the gpio debug is enabled, print gpio mapping information about
virtual gpio and native gpio, also print virtio-gpio data, which shows
the gpio operations flow.

Tracked-On: #2512
Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Yuan Liu 2019-02-01 13:52:56 +08:00 committed by wenlingz
parent 6b0643b535
commit 21ae3e7451
1 changed files with 75 additions and 0 deletions
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75
devicemodel/hw/pci/virtio/virtio_gpio.c
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@ -196,6 +196,10 @@ struct virtio_gpio {
struct virtio_gpio_config config;
};
static void print_gpio_info(struct virtio_gpio *gpio);
static void print_virtio_gpio_info(struct virtio_gpio_request *req,
struct virtio_gpio_response *rsp, bool in);
static void
native_gpio_update_line_info(struct gpio_line *line)
{
@ -408,6 +412,7 @@ gpio_request_handler(struct virtio_gpio *gpio, struct virtio_gpio_request *req,
return;
}
print_virtio_gpio_info(req, rsp, true);
switch (req->cmd) {
case GPIO_REQ_SET_VALUE:
rc = gpio_set_value(gpio, req->offset, req->data);
@ -439,6 +444,7 @@ gpio_request_handler(struct virtio_gpio *gpio, struct virtio_gpio_request *req,
}
rsp->err = rc < 0 ? -1 : 0;
print_virtio_gpio_info(req, rsp, false);
}
static void virtio_gpio_reset(void *vdev)
@ -819,6 +825,9 @@ virtio_gpio_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
virtio_set_io_bar(&gpio->base, 0);
virtio_gpio_is_active = true;
/* dump gpio information */
print_gpio_info(gpio);
return 0;
fail:
@ -865,4 +874,70 @@ struct pci_vdev_ops pci_ops_virtio_gpio = {
.vdev_barread = virtio_pci_read,
};
static void
print_gpio_info(struct virtio_gpio *gpio)
{
struct native_gpio_chip *chip;
struct gpio_line *line;
int i;
DPRINTF("=== virtual lines(%u) mapping ===\n", gpio->nvline);
for (i = 0; i < gpio->nvline; i++) {
line = gpio->vlines[i];
DPRINTF("%d: (vname:%8s, name:%8s) <=> %s, gpio=%d\n",
i,
line->vname,
line->name,
line->chip->dev_name,
line->offset);
}
DPRINTF("=== native gpio chips(%u) info ===\n", gpio->nchip);
for (i = 0; i < gpio->nchip; i++) {
chip = &gpio->chips[i];
DPRINTF("index:%d, name:%s, dev_name:%s, label:%s, ngpio:%u\n",
i,
chip->name,
chip->dev_name,
chip->label,
chip->ngpio);
}
}
static void
print_virtio_gpio_info(struct virtio_gpio_request *req,
struct virtio_gpio_response *rsp, bool in)
{
const char *item;
const char *const cmd_map[] = {
"GPIO_REQ_SET_VALUE",
"GPIO_REQ_GET_VALUE",
"GPIO_REQ_INPUT_DIRECTION",
"GPIO_REQ_OUTPUT_DIRECTION",
"GPIO_REQ_GET_DIRECTION",
"GPIO_REQ_SET_CONFIG",
};
if (req->cmd == GPIO_REQ_SET_VALUE || req->cmd == GPIO_REQ_GET_VALUE)
item = "value";
else if (req->cmd == GPIO_REQ_SET_CONFIG)
item = "config";
else if (req->cmd == GPIO_REQ_GET_DIRECTION)
item = "direction";
else
item = "data";
if (in)
DPRINTF("<<<< gpio=%u, %s, %s=%lu\n",
req->offset,
cmd_map[req->cmd],
item,
req->data);
else
DPRINTF(">>>> gpio=%u, err=%d, %s=%d\n",
req->offset,
rsp->err,
item,
rsp->data);
}
DEFINE_PCI_DEVTYPE(pci_ops_virtio_gpio);