mei: define dma ring buffer sizes for PCH12 HW and newer (7026a5fd) · Commits · 戴 / test

drivers/misc/mei/hw-me.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@
		#include <linux/kthread.h>
		#include <linux/interrupt.h>
		#include <linux/pm_runtime.h>
		#include <linux/sizes.h>

		#include "mei_dev.h"
		#include "hbm.h"
		@@ -1389,6 +1390,11 @@ static bool mei_me_fw_type_sps(struct pci_dev *pdev)
		.fw_status.status[4] = PCI_CFG_HFS_5, \
		.fw_status.status[5] = PCI_CFG_HFS_6

		#define MEI_CFG_DMA_128 \
		.dma_size[DMA_DSCR_HOST] = SZ_128K, \
		.dma_size[DMA_DSCR_DEVICE] = SZ_128K, \
		.dma_size[DMA_DSCR_CTRL] = PAGE_SIZE

		/* ICH Legacy devices */
		static const struct mei_cfg mei_me_ich_cfg = {
		MEI_CFG_ICH_HFS,
		@@ -1421,6 +1427,12 @@ static const struct mei_cfg mei_me_pch8_sps_cfg = {
		MEI_CFG_FW_SPS,
		};

		/* Cannon Lake and newer devices */
		static const struct mei_cfg mei_me_pch12_cfg = {
		MEI_CFG_PCH8_HFS,
		MEI_CFG_DMA_128,
		};

		/*
		* mei_cfg_list - A list of platform platform specific configurations.
		* Note: has to be synchronized with enum mei_cfg_idx.
		@@ -1433,6 +1445,7 @@ static const struct mei_cfg *const mei_cfg_list[] = {
		[MEI_ME_PCH_CPT_PBG_CFG] = &mei_me_pch_cpt_pbg_cfg,
		[MEI_ME_PCH8_CFG] = &mei_me_pch8_cfg,
		[MEI_ME_PCH8_SPS_CFG] = &mei_me_pch8_sps_cfg,
		[MEI_ME_PCH12_CFG] = &mei_me_pch12_cfg,
		};

		const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx)

+4 −0

Original line number	Diff line number	Diff line
		@@ -31,10 +31,12 @@
		*
		* @fw_status: FW status
		* @quirk_probe: device exclusion quirk
		* @dma_size: device DMA buffers size
		*/
		struct mei_cfg {
		const struct mei_fw_status fw_status;
		bool (quirk_probe)(struct pci_dev pdev);
		size_t dma_size[DMA_DSCR_NUM];
		};


		@@ -80,6 +82,7 @@ struct mei_me_hw {
		* @MEI_ME_PCH8_SPS_CFG: Platform Controller Hub Gen8 and newer
		* servers platforms with quirk for
		* SPS firmware exclusion.
		* @MEI_ME_PCH12_CFG: Platform Controller Hub Gen12 and newer
		* @MEI_ME_NUM_CFG: Upper Sentinel.
		*/
		enum mei_cfg_idx {
		@@ -90,6 +93,7 @@ enum mei_cfg_idx {
		MEI_ME_PCH_CPT_PBG_CFG,
		MEI_ME_PCH8_CFG,
		MEI_ME_PCH8_SPS_CFG,
		MEI_ME_PCH12_CFG,
		MEI_ME_NUM_CFG,
		};