summaryrefslogtreecommitdiff
path: root/src/soc
diff options
context:
space:
mode:
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h1
-rw-r--r--src/soc/intel/xeon_sp/include/soc/util.h2
-rw-r--r--src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h1
-rw-r--r--src/soc/intel/xeon_sp/util.c20
4 files changed, 11 insertions, 13 deletions
diff --git a/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h b/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h
index 95290f2f55..848cb48fbb 100644
--- a/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h
+++ b/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h
@@ -53,6 +53,7 @@
#define UBOX_DECS_DEV 8
#define UBOX_DECS_FUNC 2
#define UBOX_DECS_CPUBUSNO_CSR 0xcc
+#define UBOX_DECS_CPUBUSNO1_CSR 0xd0
#define VTD_TOLM_CSR 0xd0
#define VTD_TSEG_BASE_CSR 0xa8
diff --git a/src/soc/intel/xeon_sp/include/soc/util.h b/src/soc/intel/xeon_sp/include/soc/util.h
index 2637017c89..8ff54fc1cb 100644
--- a/src/soc/intel/xeon_sp/include/soc/util.h
+++ b/src/soc/intel/xeon_sp/include/soc/util.h
@@ -8,7 +8,7 @@
void get_cpubusnos(uint32_t *bus0, uint32_t *bus1, uint32_t *bus2, uint32_t *bus3);
void unlock_pam_regions(void);
-void get_stack_busnos(uint32_t *bus);
+uint8_t get_stack_busno(const uint8_t stack);
msr_t read_msr_ppin(void);
int get_threads_per_package(void);
int get_platform_thread_count(void);
diff --git a/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h b/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h
index 02061f98f0..39f6212354 100644
--- a/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h
+++ b/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h
@@ -77,6 +77,7 @@
#define UBOX_DECS_DEV 8
#define UBOX_DECS_FUNC 2
#define UBOX_DECS_CPUBUSNO_CSR 0xcc
+#define UBOX_DECS_CPUBUSNO1_CSR 0xd0
#define VTD_TOLM_CSR 0xd0
#define VTD_TSEG_BASE_CSR 0xa8
diff --git a/src/soc/intel/xeon_sp/util.c b/src/soc/intel/xeon_sp/util.c
index b4f7eaab3c..c0b05cbf6c 100644
--- a/src/soc/intel/xeon_sp/util.c
+++ b/src/soc/intel/xeon_sp/util.c
@@ -13,19 +13,15 @@
#include <soc/util.h>
#include <timer.h>
-void get_stack_busnos(uint32_t *bus)
+uint8_t get_stack_busno(const uint8_t stack)
{
- uint32_t reg1, reg2;
-
- reg1 = pci_mmio_read_config32(PCI_DEV(UBOX_DECS_BUS, UBOX_DECS_DEV, UBOX_DECS_FUNC),
- 0xcc);
- reg2 = pci_mmio_read_config32(PCI_DEV(UBOX_DECS_BUS, UBOX_DECS_DEV, UBOX_DECS_FUNC),
- 0xd0);
-
- for (int i = 0; i < 4; ++i)
- bus[i] = ((reg1 >> (i * 8)) & 0xff);
- for (int i = 0; i < 2; ++i)
- bus[4+i] = ((reg2 >> (i * 8)) & 0xff);
+ if (stack >= MAX_IIO_STACK) {
+ printk(BIOS_ERR, "%s: Stack %u does not exist!\n", __func__, stack);
+ return 0;
+ }
+ const pci_devfn_t dev = PCI_DEV(UBOX_DECS_BUS, UBOX_DECS_DEV, UBOX_DECS_FUNC);
+ const uint16_t offset = stack / 4 ? UBOX_DECS_CPUBUSNO1_CSR : UBOX_DECS_CPUBUSNO_CSR;
+ return pci_io_read_config32(dev, offset) >> (8 * (stack % 4)) & 0xff;
}
void unlock_pam_regions(void)