habanalabs: support legacy and new pll indexes

In order to use minimum of hard coded values common to LKD and F/W
a dynamic method to work with PLLs is introduced in this patch.
Formerly asic specific PLL numbering is now common for all asics.
To be backward compatible a bit in dev status is defined, if the bit is
not set LKD will keep working with old PLL numbering.

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index a65ae0dbdb92..8fa190fde462 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -105,6 +105,36 @@
 
 #define GAUDI_PLL_MAX 10
 
+/*
+ * this enum kept here for compatibility with old FW (in which each asic has
+ * unique PLL numbering
+ */
+enum gaudi_pll_index {
+	GAUDI_CPU_PLL = 0,
+	GAUDI_PCI_PLL,
+	GAUDI_SRAM_PLL,
+	GAUDI_HBM_PLL,
+	GAUDI_NIC_PLL,
+	GAUDI_DMA_PLL,
+	GAUDI_MESH_PLL,
+	GAUDI_MME_PLL,
+	GAUDI_TPC_PLL,
+	GAUDI_IF_PLL,
+};
+
+static enum pll_index gaudi_pll_map[PLL_MAX] = {
+	[CPU_PLL] = GAUDI_CPU_PLL,
+	[PCI_PLL] = GAUDI_PCI_PLL,
+	[SRAM_PLL] = GAUDI_SRAM_PLL,
+	[HBM_PLL] = GAUDI_HBM_PLL,
+	[NIC_PLL] = GAUDI_NIC_PLL,
+	[DMA_PLL] = GAUDI_DMA_PLL,
+	[MESH_PLL] = GAUDI_MESH_PLL,
+	[MME_PLL] = GAUDI_MME_PLL,
+	[TPC_PLL] = GAUDI_TPC_PLL,
+	[IF_PLL] = GAUDI_IF_PLL,
+};
+
 static const char gaudi_irq_name[GAUDI_MSI_ENTRIES][GAUDI_MAX_STRING_LEN] = {
 		"gaudi cq 0_0", "gaudi cq 0_1", "gaudi cq 0_2", "gaudi cq 0_3",
 		"gaudi cq 1_0", "gaudi cq 1_1", "gaudi cq 1_2", "gaudi cq 1_3",
@@ -1588,6 +1618,9 @@ static int gaudi_sw_init(struct hl_device *hdev)
 
 	hdev->asic_specific = gaudi;
 
+	/* store legacy PLL map */
+	hdev->legacy_pll_map = gaudi_pll_map;
+
 	/* Create DMA pool for small allocations */
 	hdev->dma_pool = dma_pool_create(dev_name(hdev->dev),
 			&hdev->pdev->dev, GAUDI_DMA_POOL_BLK_SIZE, 8, 0);