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Subject[PATCH v2 3/7] PCI/switchtec: Refactor ioctl_flash_part_info()
Refactor ioctl_flash_part_info() into a gen3 specific function seeing the
registers for flash partition information have changed significantly
in Gen4 and will require a completely different implementation.

No functional changes intended.

Co-developed-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
drivers/pci/switch/switchtec.c | 68 +++++++++++++++++++++-------------
1 file changed, 42 insertions(+), 26 deletions(-)

diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 0abc8bc8b03e..fe0b7d96c36a 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -612,75 +612,91 @@ static void set_fw_info_part(struct switchtec_ioctl_flash_part_info *info,
info->length = ioread32(&pi->length);
}

-static int ioctl_flash_part_info(struct switchtec_dev *stdev,
- struct switchtec_ioctl_flash_part_info __user *uinfo)
+static int flash_part_info_gen3(struct switchtec_dev *stdev,
+ struct switchtec_ioctl_flash_part_info *info)
{
- struct switchtec_ioctl_flash_part_info info = {0};
struct flash_info_regs __iomem *fi = stdev->mmio_flash_info;
struct sys_info_regs __iomem *si = stdev->mmio_sys_info;
u32 active_addr = -1;

- if (copy_from_user(&info, uinfo, sizeof(info)))
- return -EFAULT;
-
- switch (info.flash_partition) {
+ switch (info->flash_partition) {
case SWITCHTEC_IOCTL_PART_CFG0:
active_addr = ioread32(&fi->active_cfg);
- set_fw_info_part(&info, &fi->cfg0);
+ set_fw_info_part(info, &fi->cfg0);
if (ioread16(&si->cfg_running) == SWITCHTEC_GEN3_CFG0_RUNNING)
- info.active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
break;
case SWITCHTEC_IOCTL_PART_CFG1:
active_addr = ioread32(&fi->active_cfg);
- set_fw_info_part(&info, &fi->cfg1);
+ set_fw_info_part(info, &fi->cfg1);
if (ioread16(&si->cfg_running) == SWITCHTEC_GEN3_CFG1_RUNNING)
- info.active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
break;
case SWITCHTEC_IOCTL_PART_IMG0:
active_addr = ioread32(&fi->active_img);
- set_fw_info_part(&info, &fi->img0);
+ set_fw_info_part(info, &fi->img0);
if (ioread16(&si->img_running) == SWITCHTEC_GEN3_IMG0_RUNNING)
- info.active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
break;
case SWITCHTEC_IOCTL_PART_IMG1:
active_addr = ioread32(&fi->active_img);
- set_fw_info_part(&info, &fi->img1);
+ set_fw_info_part(info, &fi->img1);
if (ioread16(&si->img_running) == SWITCHTEC_GEN3_IMG1_RUNNING)
- info.active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
break;
case SWITCHTEC_IOCTL_PART_NVLOG:
- set_fw_info_part(&info, &fi->nvlog);
+ set_fw_info_part(info, &fi->nvlog);
break;
case SWITCHTEC_IOCTL_PART_VENDOR0:
- set_fw_info_part(&info, &fi->vendor[0]);
+ set_fw_info_part(info, &fi->vendor[0]);
break;
case SWITCHTEC_IOCTL_PART_VENDOR1:
- set_fw_info_part(&info, &fi->vendor[1]);
+ set_fw_info_part(info, &fi->vendor[1]);
break;
case SWITCHTEC_IOCTL_PART_VENDOR2:
- set_fw_info_part(&info, &fi->vendor[2]);
+ set_fw_info_part(info, &fi->vendor[2]);
break;
case SWITCHTEC_IOCTL_PART_VENDOR3:
- set_fw_info_part(&info, &fi->vendor[3]);
+ set_fw_info_part(info, &fi->vendor[3]);
break;
case SWITCHTEC_IOCTL_PART_VENDOR4:
- set_fw_info_part(&info, &fi->vendor[4]);
+ set_fw_info_part(info, &fi->vendor[4]);
break;
case SWITCHTEC_IOCTL_PART_VENDOR5:
- set_fw_info_part(&info, &fi->vendor[5]);
+ set_fw_info_part(info, &fi->vendor[5]);
break;
case SWITCHTEC_IOCTL_PART_VENDOR6:
- set_fw_info_part(&info, &fi->vendor[6]);
+ set_fw_info_part(info, &fi->vendor[6]);
break;
case SWITCHTEC_IOCTL_PART_VENDOR7:
- set_fw_info_part(&info, &fi->vendor[7]);
+ set_fw_info_part(info, &fi->vendor[7]);
break;
default:
return -EINVAL;
}

- if (info.address == active_addr)
- info.active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (info->address == active_addr)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+
+ return 0;
+}
+
+static int ioctl_flash_part_info(struct switchtec_dev *stdev,
+ struct switchtec_ioctl_flash_part_info __user *uinfo)
+{
+ int ret;
+ struct switchtec_ioctl_flash_part_info info = {0};
+
+ if (copy_from_user(&info, uinfo, sizeof(info)))
+ return -EFAULT;
+
+ if (stdev->gen == SWITCHTEC_GEN3) {
+ ret = flash_part_info_gen3(stdev, &info);
+ if (ret)
+ return ret;
+ } else {
+ return -ENOTSUPP;
+ }

if (copy_to_user(uinfo, &info, sizeof(info)))
return -EFAULT;
--
2.20.1
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