On 7/23/19 4:05 PM, David Miller wrote:
From: Shannon Nelson <snel...@pensando.io>
Date: Tue, 23 Jul 2019 15:50:22 -0700
On 7/23/19 2:18 PM, David Miller wrote:
From: Shannon Nelson <snel...@pensando.io>
Date: Mon, 22 Jul 2019 14:40:06 -0700
+void ionic_init_devinfo(struct ionic_dev *idev)
+{
+ idev->dev_info.asic_type = ioread8(&idev->dev_info_regs->asic_type);
+ idev->dev_info.asic_rev = ioread8(&idev->dev_info_regs->asic_rev);
+
+ memcpy_fromio(idev->dev_info.fw_version,
+ idev->dev_info_regs->fw_version,
+ IONIC_DEVINFO_FWVERS_BUFLEN);
+
+ memcpy_fromio(idev->dev_info.serial_num,
+ idev->dev_info_regs->serial_num,
+ IONIC_DEVINFO_SERIAL_BUFLEN);
...
+ sig = ioread32(&idev->dev_info_regs->signature);
I think if you are going to use the io{read,write}{8,16,32,64}()
interfaces then you should use io{read,write}{8,16,32,64}_rep()
instead of memcpy_{to,from}io().
Sure.
Note, I could be wrong. Please test.
I think the operation of the two things might be different.
Yes, they are different things, the iowrite*_rep() functions write each
value from a buffer all to the same single address, rather than copy a
buffer into another buffer, and the ioread*_rep() functions repeatedly
read from the same address to fill a buffer.
For example, the iowrite32_rep() boils down to this:
do {
__raw_writel(*buf++, addr);
} while (--count);
Not quite what I need.
sln
