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Subject[PATCH v2 6/7] PCI/switchtec: Add gen4 support for the flash information interface
From: Kelvin Cao <kelvin.cao@microchip.com>

Add the new flash_info registers struct and the implementation
of ioctl_flash_part_info() for the new gen4 hardware.

Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
[logang@deltatee.com: rewrote commit message]
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
drivers/pci/switch/switchtec.c | 111 +++++++++++++++++++++++++++
include/linux/switchtec.h | 52 +++++++++++++
include/uapi/linux/switchtec_ioctl.h | 8 ++
3 files changed, 171 insertions(+)

diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 0062225db50f..92b95e8067c0 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -606,6 +606,9 @@ static int ioctl_flash_info(struct switchtec_dev *stdev,
if (stdev->gen == SWITCHTEC_GEN3) {
info.flash_length = ioread32(&fi->gen3.flash_length);
info.num_partitions = SWITCHTEC_NUM_PARTITIONS_GEN3;
+ } else if (stdev->gen == SWITCHTEC_GEN4) {
+ info.flash_length = ioread32(&fi->gen4.flash_length);
+ info.num_partitions = SWITCHTEC_NUM_PARTITIONS_GEN4;
} else {
return -ENOTSUPP;
}
@@ -693,6 +696,110 @@ static int flash_part_info_gen3(struct switchtec_dev *stdev,
return 0;
}

+static int flash_part_info_gen4(struct switchtec_dev *stdev,
+ struct switchtec_ioctl_flash_part_info *info)
+{
+ struct flash_info_regs_gen4 __iomem *fi = &stdev->mmio_flash_info->gen4;
+ struct sys_info_regs_gen4 __iomem *si = &stdev->mmio_sys_info->gen4;
+ struct active_partition_info_gen4 __iomem *af = &fi->active_flag;
+
+ switch (info->flash_partition) {
+ case SWITCHTEC_IOCTL_PART_MAP_0:
+ set_fw_info_part(info, &fi->map0);
+ break;
+ case SWITCHTEC_IOCTL_PART_MAP_1:
+ set_fw_info_part(info, &fi->map1);
+ break;
+ case SWITCHTEC_IOCTL_PART_KEY_0:
+ set_fw_info_part(info, &fi->key0);
+ if (ioread8(&af->key) == SWITCHTEC_GEN4_KEY0_ACTIVE)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (ioread16(&si->key_running) == SWITCHTEC_GEN4_KEY0_RUNNING)
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ break;
+ case SWITCHTEC_IOCTL_PART_KEY_1:
+ set_fw_info_part(info, &fi->key1);
+ if (ioread8(&af->key) == SWITCHTEC_GEN4_KEY1_ACTIVE)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (ioread16(&si->key_running) == SWITCHTEC_GEN4_KEY1_RUNNING)
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ break;
+ case SWITCHTEC_IOCTL_PART_BL2_0:
+ set_fw_info_part(info, &fi->bl2_0);
+ if (ioread8(&af->bl2) == SWITCHTEC_GEN4_BL2_0_ACTIVE)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (ioread16(&si->bl2_running) == SWITCHTEC_GEN4_BL2_0_RUNNING)
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ break;
+ case SWITCHTEC_IOCTL_PART_BL2_1:
+ set_fw_info_part(info, &fi->bl2_1);
+ if (ioread8(&af->bl2) == SWITCHTEC_GEN4_BL2_1_ACTIVE)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (ioread16(&si->bl2_running) == SWITCHTEC_GEN4_BL2_1_RUNNING)
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ break;
+ case SWITCHTEC_IOCTL_PART_CFG0:
+ set_fw_info_part(info, &fi->cfg0);
+ if (ioread8(&af->cfg) == SWITCHTEC_GEN4_CFG0_ACTIVE)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (ioread16(&si->cfg_running) == SWITCHTEC_GEN4_CFG0_RUNNING)
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ break;
+ case SWITCHTEC_IOCTL_PART_CFG1:
+ set_fw_info_part(info, &fi->cfg1);
+ if (ioread8(&af->cfg) == SWITCHTEC_GEN4_CFG1_ACTIVE)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (ioread16(&si->cfg_running) == SWITCHTEC_GEN4_CFG1_RUNNING)
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ break;
+ case SWITCHTEC_IOCTL_PART_IMG0:
+ set_fw_info_part(info, &fi->img0);
+ if (ioread8(&af->img) == SWITCHTEC_GEN4_IMG0_ACTIVE)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (ioread16(&si->img_running) == SWITCHTEC_GEN4_IMG0_RUNNING)
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ break;
+ case SWITCHTEC_IOCTL_PART_IMG1:
+ set_fw_info_part(info, &fi->img1);
+ if (ioread8(&af->img) == SWITCHTEC_GEN4_IMG1_ACTIVE)
+ info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
+ if (ioread16(&si->img_running) == SWITCHTEC_GEN4_IMG1_RUNNING)
+ info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
+ break;
+ case SWITCHTEC_IOCTL_PART_NVLOG:
+ set_fw_info_part(info, &fi->nvlog);
+ break;
+ case SWITCHTEC_IOCTL_PART_VENDOR0:
+ set_fw_info_part(info, &fi->vendor[0]);
+ break;
+ case SWITCHTEC_IOCTL_PART_VENDOR1:
+ set_fw_info_part(info, &fi->vendor[1]);
+ break;
+ case SWITCHTEC_IOCTL_PART_VENDOR2:
+ set_fw_info_part(info, &fi->vendor[2]);
+ break;
+ case SWITCHTEC_IOCTL_PART_VENDOR3:
+ set_fw_info_part(info, &fi->vendor[3]);
+ break;
+ case SWITCHTEC_IOCTL_PART_VENDOR4:
+ set_fw_info_part(info, &fi->vendor[4]);
+ break;
+ case SWITCHTEC_IOCTL_PART_VENDOR5:
+ set_fw_info_part(info, &fi->vendor[5]);
+ break;
+ case SWITCHTEC_IOCTL_PART_VENDOR6:
+ set_fw_info_part(info, &fi->vendor[6]);
+ break;
+ case SWITCHTEC_IOCTL_PART_VENDOR7:
+ set_fw_info_part(info, &fi->vendor[7]);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int ioctl_flash_part_info(struct switchtec_dev *stdev,
struct switchtec_ioctl_flash_part_info __user *uinfo)
{
@@ -706,6 +813,10 @@ static int ioctl_flash_part_info(struct switchtec_dev *stdev,
ret = flash_part_info_gen3(stdev, &info);
if (ret)
return ret;
+ } else if (stdev->gen == SWITCHTEC_GEN4) {
+ ret = flash_part_info_gen4(stdev, &info);
+ if (ret)
+ return ret;
} else {
return -ENOTSUPP;
}
diff --git a/include/linux/switchtec.h b/include/linux/switchtec.h
index ea217af5260e..082f1d51957a 100644
--- a/include/linux/switchtec.h
+++ b/include/linux/switchtec.h
@@ -114,6 +114,30 @@ enum {
SWITCHTEC_GEN3_IMG1_RUNNING = 0x07,
};

+enum {
+ SWITCHTEC_GEN4_MAP0_RUNNING = 0x00,
+ SWITCHTEC_GEN4_MAP1_RUNNING = 0x01,
+ SWITCHTEC_GEN4_KEY0_RUNNING = 0x02,
+ SWITCHTEC_GEN4_KEY1_RUNNING = 0x03,
+ SWITCHTEC_GEN4_BL2_0_RUNNING = 0x04,
+ SWITCHTEC_GEN4_BL2_1_RUNNING = 0x05,
+ SWITCHTEC_GEN4_CFG0_RUNNING = 0x06,
+ SWITCHTEC_GEN4_CFG1_RUNNING = 0x07,
+ SWITCHTEC_GEN4_IMG0_RUNNING = 0x08,
+ SWITCHTEC_GEN4_IMG1_RUNNING = 0x09,
+};
+
+enum {
+ SWITCHTEC_GEN4_KEY0_ACTIVE = 0,
+ SWITCHTEC_GEN4_KEY1_ACTIVE = 1,
+ SWITCHTEC_GEN4_BL2_0_ACTIVE = 0,
+ SWITCHTEC_GEN4_BL2_1_ACTIVE = 1,
+ SWITCHTEC_GEN4_CFG0_ACTIVE = 0,
+ SWITCHTEC_GEN4_CFG1_ACTIVE = 1,
+ SWITCHTEC_GEN4_IMG0_ACTIVE = 0,
+ SWITCHTEC_GEN4_IMG1_ACTIVE = 1,
+};
+
struct sys_info_regs_gen3 {
u32 reserved1;
u32 vendor_table_revision;
@@ -210,9 +234,37 @@ struct flash_info_regs_gen3 {
struct partition_info vendor[8];
};

+struct flash_info_regs_gen4 {
+ u32 flash_address;
+ u32 flash_length;
+
+ struct active_partition_info_gen4 {
+ unsigned char bl2;
+ unsigned char cfg;
+ unsigned char img;
+ unsigned char key;
+ } active_flag;
+
+ u32 reserved[3];
+
+ struct partition_info map0;
+ struct partition_info map1;
+ struct partition_info key0;
+ struct partition_info key1;
+ struct partition_info bl2_0;
+ struct partition_info bl2_1;
+ struct partition_info cfg0;
+ struct partition_info cfg1;
+ struct partition_info img0;
+ struct partition_info img1;
+ struct partition_info nvlog;
+ struct partition_info vendor[8];
+};
+
struct flash_info_regs {
union {
struct flash_info_regs_gen3 gen3;
+ struct flash_info_regs_gen4 gen4;
};
};

diff --git a/include/uapi/linux/switchtec_ioctl.h b/include/uapi/linux/switchtec_ioctl.h
index 4d09cfa2e9e6..2c661a3557e5 100644
--- a/include/uapi/linux/switchtec_ioctl.h
+++ b/include/uapi/linux/switchtec_ioctl.h
@@ -32,7 +32,15 @@
#define SWITCHTEC_IOCTL_PART_VENDOR5 10
#define SWITCHTEC_IOCTL_PART_VENDOR6 11
#define SWITCHTEC_IOCTL_PART_VENDOR7 12
+#define SWITCHTEC_IOCTL_PART_BL2_0 13
+#define SWITCHTEC_IOCTL_PART_BL2_1 14
+#define SWITCHTEC_IOCTL_PART_MAP_0 15
+#define SWITCHTEC_IOCTL_PART_MAP_1 16
+#define SWITCHTEC_IOCTL_PART_KEY_0 17
+#define SWITCHTEC_IOCTL_PART_KEY_1 18
+
#define SWITCHTEC_NUM_PARTITIONS_GEN3 13
+#define SWITCHTEC_NUM_PARTITIONS_GEN4 19

/* obsolete: for compatibility with old userspace software */
#define SWITCHTEC_IOCTL_NUM_PARTITIONS SWITCHTEC_NUM_PARTITIONS_GEN3
--
2.20.1
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