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PCI/switchtec: Add Gen4 flash information interface support

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Add the new flash_info registers struct and the implementation of
ioctl_flash_part_info() for the new Gen4 hardware.

[logang@deltatee.com: rewrote commit message]
Link: https://lore.kernel.org/r/20200115035648.2578-7-logang@deltatee.com
Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Kelvin Cao 2020-01-14 20:56:47 -07:00 • committed by Bjorn Helgaas
parent a3321ca394
commit 4efa1d2e36
3 changed files with 171 additions and 0 deletions
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111
drivers/pci/switch/switchtec.c
View file

@ -600,6 +600,9 @@ 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;
}
@ -687,6 +690,110 @@ 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)
{
@ -700,6 +807,10 @@ 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;
}

52
include/linux/switchtec.h
View file

@ -109,6 +109,30 @@ 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;
@ -205,9 +229,37 @@ 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;
};
};

8
include/uapi/linux/switchtec_ioctl.h
View file

@ -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