Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@xxxxxxxxxxxxxxx>
---
Changes in v2:
* Removed IP # from map and displaying IP # while printing.
* Other style fixes as per Andy's suggestion.
drivers/platform/x86/intel_pmc_core.c | 73 +++++++++++++++++++++++++++
drivers/platform/x86/intel_pmc_core.h | 56 +++++++++++++++++---
2 files changed, 122 insertions(+), 7 deletions(-)
diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
index 2d272a3e0176..217a822a8da1 100644
--- a/drivers/platform/x86/intel_pmc_core.c
+++ b/drivers/platform/x86/intel_pmc_core.c
@@ -110,10 +110,37 @@ static const struct pmc_bit_map spt_pfear_map[] = {
{},
};
+static const struct pmc_bit_map spt_ltr_show_map[] = {
+ {"LTR_SOUTHPORT_A", SPT_PMC_LTR_SPA},
+ {"LTR_SOUTHPORT_B", SPT_PMC_LTR_SPB},
+ {"LTR_SATA", SPT_PMC_LTR_SATA},
+ {"LTR_GIGABIT_ETHERNET", SPT_PMC_LTR_GBE},
+ {"LTR_XHCI", SPT_PMC_LTR_XHCI},
+ /* IP 5 is reserved */
+ {"LTR_ME", SPT_PMC_LTR_ME},
+ /* EVA is Enterprise Value Add, doesn't really exist on PCH */
+ {"LTR_EVA", SPT_PMC_LTR_EVA},
+ {"LTR_SOUTHPORT_C", SPT_PMC_LTR_SPC},
+ {"LTR_HD_AUDIO", SPT_PMC_LTR_AZ},
+ /* IP 10 is reserved */
+ {"LTR_LPSS", SPT_PMC_LTR_LPSS},
+ {"LTR_SOUTHPORT_D", SPT_PMC_LTR_SPD},
+ {"LTR_SOUTHPORT_E", SPT_PMC_LTR_SPE},
+ {"LTR_CAMERA", SPT_PMC_LTR_CAM},
+ {"LTR_ESPI", SPT_PMC_LTR_ESPI},
+ {"LTR_SCC", SPT_PMC_LTR_SCC},
+ {"LTR_ISH", SPT_PMC_LTR_ISH},
+ /* Below two cannot be used for LTR_IGNORE */
+ {"LTR_CURRENT_PLATFORM", SPT_PMC_LTR_CUR_PLT},
+ {"LTR_AGGREGATED_SYSTEM", SPT_PMC_LTR_CUR_ASLT},
+ {}
+};
+
static const struct pmc_reg_map spt_reg_map = {
.pfear_sts = spt_pfear_map,
.mphy_sts = spt_mphy_map,
.pll_sts = spt_pll_map,
+ .ltr_show_sts = spt_ltr_show_map,
.slp_s0_offset = SPT_PMC_SLP_S0_RES_COUNTER_OFFSET,
.ltr_ignore_offset = SPT_PMC_LTR_IGNORE_OFFSET,
.regmap_length = SPT_PMC_MMIO_REG_LEN,
@@ -252,10 +279,39 @@ static const struct pmc_bit_map *cnp_slps0_dbg_maps[] = {
NULL,
};
+static const struct pmc_bit_map cnp_ltr_show_map[] = {
+ {"LTR_SOUTHPORT_A", CNP_PMC_LTR_SPA},
+ {"LTR_SOUTHPORT_B", CNP_PMC_LTR_SPB},
+ {"LTR_SATA", CNP_PMC_LTR_SATA},
+ {"LTR_GIGABIT_ETHERNET", CNP_PMC_LTR_GBE},
+ {"LTR_XHCI", CNP_PMC_LTR_XHCI},
+ /* IP 5 is reserved */
+ {"LTR_ME", CNP_PMC_LTR_ME},
+ /* EVA is Enterprise Value Add, doesn't really exist on PCH */
+ {"LTR_EVA", CNP_PMC_LTR_EVA},
+ {"LTR_SOUTHPORT_C", CNP_PMC_LTR_SPC},
+ {"LTR_HD_AUDIO", CNP_PMC_LTR_AZ},
+ {"LTR_CNV", CNP_PMC_LTR_CNV},
+ {"LTR_LPSS", CNP_PMC_LTR_LPSS},
+ {"LTR_SOUTHPORT_D", CNP_PMC_LTR_SPD},
+ {"LTR_SOUTHPORT_E", CNP_PMC_LTR_SPE},
+ {"LTR_CAMERA", CNP_PMC_LTR_CAM},
+ {"LTR_ESPI", CNP_PMC_LTR_ESPI},
+ {"LTR_SCC", CNP_PMC_LTR_SCC},
+ {"LTR_ISH", CNP_PMC_LTR_ISH},
+ {"LTR_UFSX2", CNP_PMC_LTR_UFSX2},
+ {"LTR_EMMC", CNP_PMC_LTR_EMMC},
+ /* Below two cannot be used for LTR_IGNORE */
+ {"LTR_CURRENT_PLATFORM", CNP_PMC_LTR_CUR_PLT},
+ {"LTR_AGGREGATED_SYSTEM", CNP_PMC_LTR_CUR_ASLT},
+ {}
+};
+
static const struct pmc_reg_map cnp_reg_map = {
.pfear_sts = cnp_pfear_map,
.slp_s0_offset = CNP_PMC_SLP_S0_RES_COUNTER_OFFSET,
.slps0_dbg_maps = cnp_slps0_dbg_maps,
+ .ltr_show_sts = cnp_ltr_show_map,
.slps0_dbg_offset = CNP_PMC_SLPS0_DBG_OFFSET,
.ltr_ignore_offset = CNP_PMC_LTR_IGNORE_OFFSET,
.regmap_length = CNP_PMC_MMIO_REG_LEN,
@@ -592,6 +648,21 @@ static int pmc_core_slps0_dbg_show(struct seq_file *s, void *unused)
}
DEFINE_SHOW_ATTRIBUTE(pmc_core_slps0_dbg);
+static int pmc_core_ltr_show(struct seq_file *s, void *unused)
+{
+ struct pmc_dev *pmcdev = s->private;
+ const struct pmc_bit_map *map = pmcdev->map->ltr_show_sts;
+ int index;
+
+ for (index = 0; map[index].name ; index++) {
+ seq_printf(s, "IP %-2d :%-32s\tRAW LTR: 0x%x\n", index,
+ map[index].name,
+ pmc_core_reg_read(pmcdev, map[index].bit_mask));
+ }
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(pmc_core_ltr);
+
static void pmc_core_dbgfs_unregister(struct pmc_dev *pmcdev)
{
debugfs_remove_recursive(pmcdev->dbgfs_dir);
@@ -616,6 +687,8 @@ static int pmc_core_dbgfs_register(struct pmc_dev *pmcdev)
debugfs_create_file("ltr_ignore", 0644, dir, pmcdev,
&pmc_core_ltr_ignore_ops);
+ debugfs_create_file("ltr_show", 0644, dir, pmcdev, &pmc_core_ltr_fops);
+
if (pmcdev->map->pll_sts)
debugfs_create_file("pll_status", 0444, dir, pmcdev,
&pmc_core_pll_ops);
diff --git a/drivers/platform/x86/intel_pmc_core.h b/drivers/platform/x86/intel_pmc_core.h
index 93a7e99e1f8b..7a00436e337d 100644
--- a/drivers/platform/x86/intel_pmc_core.h
+++ b/drivers/platform/x86/intel_pmc_core.h
@@ -46,6 +46,25 @@
#define NUM_RETRIES 100
#define NUM_IP_IGN_ALLOWED 17
+#define SPT_PMC_LTR_CUR_PLT 0x350
+#define SPT_PMC_LTR_CUR_ASLT 0x354
+#define SPT_PMC_LTR_SPA 0x360
+#define SPT_PMC_LTR_SPB 0x364
+#define SPT_PMC_LTR_SATA 0x368
+#define SPT_PMC_LTR_GBE 0x36C
+#define SPT_PMC_LTR_XHCI 0x370
+#define SPT_PMC_LTR_ME 0x378
+#define SPT_PMC_LTR_EVA 0x37C
+#define SPT_PMC_LTR_SPC 0x380
+#define SPT_PMC_LTR_AZ 0x384
+#define SPT_PMC_LTR_LPSS 0x38C
+#define SPT_PMC_LTR_CAM 0x390
+#define SPT_PMC_LTR_SPD 0x394
+#define SPT_PMC_LTR_SPE 0x398
+#define SPT_PMC_LTR_ESPI 0x39C
+#define SPT_PMC_LTR_SCC 0x3A0
+#define SPT_PMC_LTR_ISH 0x3A4
+
/* Sunrise Point: PGD PFET Enable Ack Status Registers */
enum ppfear_regs {
SPT_PMC_XRAM_PPFEAR0A = 0x590,
@@ -124,17 +143,38 @@ enum ppfear_regs {
#define SPT_PMC_BIT_MPHY_CMN_LANE3 BIT(3)
/* Cannonlake Power Management Controller register offsets */
-#define CNP_PMC_SLP_S0_RES_COUNTER_OFFSET 0x193C
-#define CNP_PMC_LTR_IGNORE_OFFSET 0x1B0C
-#define CNP_PMC_PM_CFG_OFFSET 0x1818
+#define CNP_PMC_SLP_S0_RES_COUNTER_OFFSET 0x193C
+#define CNP_PMC_LTR_IGNORE_OFFSET 0x1B0C
+#define CNP_PMC_PM_CFG_OFFSET 0x1818
#define CNP_PMC_SLPS0_DBG_OFFSET 0x10B4
/* Cannonlake: PGD PFET Enable Ack Status Register(s) start */
-#define CNP_PMC_HOST_PPFEAR0A 0x1D90
+#define CNP_PMC_HOST_PPFEAR0A 0x1D90
-#define CNP_PMC_MMIO_REG_LEN 0x2000
-#define CNP_PPFEAR_NUM_ENTRIES 8
-#define CNP_PMC_READ_DISABLE_BIT 22
+#define CNP_PMC_MMIO_REG_LEN 0x2000
+#define CNP_PPFEAR_NUM_ENTRIES 8
+#define CNP_PMC_READ_DISABLE_BIT 22
#define CNP_PMC_LATCH_SLPS0_EVENTS BIT(31)
+#define CNP_PMC_LTR_CUR_PLT 0x1B50
+#define CNP_PMC_LTR_CUR_ASLT 0x1B54
+#define CNP_PMC_LTR_SPA 0x1B60
+#define CNP_PMC_LTR_SPB 0x1B64
+#define CNP_PMC_LTR_SATA 0x1B68
+#define CNP_PMC_LTR_GBE 0x1B6C
+#define CNP_PMC_LTR_XHCI 0x1B70
+#define CNP_PMC_LTR_ME 0x1B78
+#define CNP_PMC_LTR_EVA 0x1B7C
+#define CNP_PMC_LTR_SPC 0x1B80
+#define CNP_PMC_LTR_AZ 0x1B84
+#define CNP_PMC_LTR_LPSS 0x1B8C
+#define CNP_PMC_LTR_CAM 0x1B90
+#define CNP_PMC_LTR_SPD 0x1B94
+#define CNP_PMC_LTR_SPE 0x1B98
+#define CNP_PMC_LTR_ESPI 0x1B9C
+#define CNP_PMC_LTR_SCC 0x1BA0
+#define CNP_PMC_LTR_ISH 0x1BA4
+#define CNP_PMC_LTR_CNV 0x1BF0
+#define CNP_PMC_LTR_EMMC 0x1BF4
+#define CNP_PMC_LTR_UFSX2 0x1BF8
struct pmc_bit_map {
const char *name;
@@ -148,6 +188,7 @@ struct pmc_bit_map {
* @mphy_sts: Maps name of MPHY lane to MPHY status lane status bit
* @pll_sts: Maps name of PLL to corresponding bit status
* @slps0_dbg_maps: Array of SLP_S0_DBG* registers containing debug info
+ * @ltr_show_sts: Maps PCH IP Names to their MMIO register offsets
* @slp_s0_offset: PWRMBASE offset to read SLP_S0 residency
* @ltr_ignore_offset: PWRMBASE offset to read/write LTR ignore bit
* @regmap_length: Length of memory to map from PWRMBASE address to access
@@ -166,6 +207,7 @@ struct pmc_reg_map {
const struct pmc_bit_map *mphy_sts;
const struct pmc_bit_map *pll_sts;
const struct pmc_bit_map **slps0_dbg_maps;
+ const struct pmc_bit_map *ltr_show_sts;
const u32 slp_s0_offset;
const u32 ltr_ignore_offset;
const int regmap_length;
--
2.17.1
