From: Jakub Byczkowski <jakub.byczkowski@intel.com>
Date: Sun, 13 Aug 2017 08:08:40 -0700
Subject: IB/hfi1: Load fallback platform configuration per HFI device
Patch-mainline: v4.14-rc1
Git-commit: 76ae6222a4a37098610c0601a814c9caba94ba0b
References: bsc#1060463 FATE#323043
Currently fallback configuration is loaded once per driver instance.
With multiple HFI devices in the same system the current code may not
load the platform config data for the device. Change fallback platform
config data loading to be per device.
Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/hfi1/chip.h | 1
drivers/infiniband/hw/hfi1/firmware.c | 51 ++--------------------------------
drivers/infiniband/hw/hfi1/platform.c | 41 ++++++++++++++++++---------
3 files changed, 31 insertions(+), 62 deletions(-)
--- a/drivers/infiniband/hw/hfi1/chip.h
+++ b/drivers/infiniband/hw/hfi1/chip.h
@@ -648,7 +648,6 @@ u64 create_pbc(struct hfi1_pportdata *pp
#define NUM_PCIE_SERDES 16 /* number of PCIe serdes on the SBus */
extern const u8 pcie_serdes_broadcast[];
extern const u8 pcie_pcs_addrs[2][NUM_PCIE_SERDES];
-extern uint platform_config_load;
/* SBus commands */
#define RESET_SBUS_RECEIVER 0x20
--- a/drivers/infiniband/hw/hfi1/firmware.c
+++ b/drivers/infiniband/hw/hfi1/firmware.c
@@ -64,7 +64,6 @@
#define DEFAULT_FW_FABRIC_NAME "hfi1_fabric.fw"
#define DEFAULT_FW_SBUS_NAME "hfi1_sbus.fw"
#define DEFAULT_FW_PCIE_NAME "hfi1_pcie.fw"
-#define DEFAULT_PLATFORM_CONFIG_NAME "hfi1_platform.dat"
#define ALT_FW_8051_NAME_ASIC "hfi1_dc8051_d.fw"
#define ALT_FW_FABRIC_NAME "hfi1_fabric_d.fw"
#define ALT_FW_SBUS_NAME "hfi1_sbus_d.fw"
@@ -76,19 +75,11 @@ static uint fw_fabric_serdes_load = 1;
static uint fw_pcie_serdes_load = 1;
static uint fw_sbus_load = 1;
-/*
- * Access required in platform.c
- * Maintains state of whether the platform config was fetched via the
- * fallback option
- */
-uint platform_config_load;
-
/* Firmware file names get set in hfi1_firmware_init() based on the above */
static char *fw_8051_name;
static char *fw_fabric_serdes_name;
static char *fw_sbus_name;
static char *fw_pcie_serdes_name;
-static char *platform_config_name;
#define SBUS_MAX_POLL_COUNT 100
#define SBUS_COUNTER(reg, name) \
@@ -178,7 +169,6 @@ static struct firmware_details fw_8051;
static struct firmware_details fw_fabric;
static struct firmware_details fw_pcie;
static struct firmware_details fw_sbus;
-static const struct firmware *platform_config;
/* flags for turn_off_spicos() */
#define SPICO_SBUS 0x1
@@ -684,7 +674,6 @@ done:
static int obtain_firmware(struct hfi1_devdata *dd)
{
unsigned long timeout;
- int err = 0;
mutex_lock(&fw_mutex);
@@ -708,38 +697,11 @@ static int obtain_firmware(struct hfi1_d
}
/* not in FW_TRY state */
- if (fw_state == FW_FINAL) {
- if (platform_config) {
- dd->platform_config.data = platform_config->data;
- dd->platform_config.size = platform_config->size;
- }
- goto done; /* already acquired */
- } else if (fw_state == FW_ERR) {
- goto done; /* already tried and failed */
- }
- /* fw_state is FW_EMPTY */
-
/* set fw_state to FW_TRY, FW_FINAL, or FW_ERR, and fw_err */
- __obtain_firmware(dd);
-
- if (platform_config_load) {
- platform_config = NULL;
- err = request_firmware(&platform_config, platform_config_name,
- &dd->pcidev->dev);
- if (err) {
- platform_config = NULL;
- dd_dev_err(dd,
- "%s: No default platform config file found\n",
- __func__);
- goto done;
- }
- dd->platform_config.data = platform_config->data;
- dd->platform_config.size = platform_config->size;
- }
+ if (fw_state == FW_EMPTY)
+ __obtain_firmware(dd);
-done:
mutex_unlock(&fw_mutex);
-
return fw_err;
}
@@ -761,9 +723,6 @@ void dispose_firmware(void)
dispose_one_firmware(&fw_pcie);
dispose_one_firmware(&fw_sbus);
- release_firmware(platform_config);
- platform_config = NULL;
-
/* retain the error state, otherwise revert to empty */
if (fw_state != FW_ERR)
fw_state = FW_EMPTY;
@@ -1725,10 +1684,8 @@ int hfi1_firmware_init(struct hfi1_devda
}
/* no 8051 or QSFP on simulator */
- if (dd->icode == ICODE_FUNCTIONAL_SIMULATOR) {
+ if (dd->icode == ICODE_FUNCTIONAL_SIMULATOR)
fw_8051_load = 0;
- platform_config_load = 0;
- }
if (!fw_8051_name) {
if (dd->icode == ICODE_RTL_SILICON)
@@ -1742,8 +1699,6 @@ int hfi1_firmware_init(struct hfi1_devda
fw_sbus_name = DEFAULT_FW_SBUS_NAME;
if (!fw_pcie_serdes_name)
fw_pcie_serdes_name = DEFAULT_FW_PCIE_NAME;
- if (!platform_config_name)
- platform_config_name = DEFAULT_PLATFORM_CONFIG_NAME;
return obtain_firmware(dd);
}
--- a/drivers/infiniband/hw/hfi1/platform.c
+++ b/drivers/infiniband/hw/hfi1/platform.c
@@ -45,10 +45,14 @@
*
*/
+#include <linux/firmware.h>
+
#include "hfi.h"
#include "efivar.h"
#include "eprom.h"
+#define DEFAULT_PLATFORM_CONFIG_NAME "hfi1_platform.dat"
+
static int validate_scratch_checksum(struct hfi1_devdata *dd)
{
u64 checksum = 0, temp_scratch = 0;
@@ -147,6 +151,7 @@ void get_platform_config(struct hfi1_dev
int ret = 0;
u8 *temp_platform_config = NULL;
u32 esize;
+ const struct firmware *platform_config_file = NULL;
if (is_integrated(dd)) {
if (validate_scratch_checksum(dd)) {
@@ -167,23 +172,33 @@ void get_platform_config(struct hfi1_dev
dd_dev_err(dd,
"%s: Failed to get platform config, falling back to sub-optimal default file\n",
__func__);
- /* fall back to request firmware */
- platform_config_load = 1;
-}
-void free_platform_config(struct hfi1_devdata *dd)
-{
- if (!platform_config_load) {
- /*
- * was loaded from EFI or the EPROM, release memory
- * allocated by read_efi_var/eprom_read_platform_config
- */
- kfree(dd->platform_config.data);
+ ret = request_firmware(&platform_config_file,
+ DEFAULT_PLATFORM_CONFIG_NAME,
+ &dd->pcidev->dev);
+ if (ret) {
+ dd_dev_err(dd,
+ "%s: No default platform config file found\n",
+ __func__);
+ return;
}
+
/*
- * else do nothing, dispose_firmware will release
- * struct firmware platform_config on driver exit
+ * Allocate separate memory block to store data and free firmware
+ * structure. This allows free_platform_config to treat EPROM and
+ * fallback configs in the same manner.
*/
+ dd->platform_config.data = kmemdup(platform_config_file->data,
+ platform_config_file->size,
+ GFP_KERNEL);
+ dd->platform_config.size = platform_config_file->size;
+ release_firmware(platform_config_file);
+}
+
+void free_platform_config(struct hfi1_devdata *dd)
+{
+ /* Release memory allocated for eprom or fallback file read. */
+ kfree(dd->platform_config.data);
}
void get_port_type(struct hfi1_pportdata *ppd)