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Tue, 04 Sep 2018 04:55:20 -0700 (PDT) From: sunil.kovvuri@gmail.com To: linux-kernel@vger.kernel.org, arnd@arndb.de, olof@lixom.net Subject: [PATCH v2 02/15] soc: octeontx2: Reset all RVU blocks Date: Tue, 4 Sep 2018 17:24:37 +0530 Message-Id: <1536062090-30446-3-git-send-email-sunil.kovvuri@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1536062090-30446-1-git-send-email-sunil.kovvuri@gmail.com> References: <1536062090-30446-1-git-send-email-sunil.kovvuri@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180904_045531_880044_0CDD2B31 X-CRM114-Status: GOOD ( 21.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: andrew@lunn.ch, linux-soc@vger.kernel.org, davem@davemloft.net, linux-arm-kernel@lists.infradead.org, Sunil Goutham MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sunil Goutham Go through all BLKADDRs and check which ones are implemented on this silicon and do a HW reset of each implemented block. Also added all RVU AF and PF register offsets. Signed-off-by: Sunil Goutham --- drivers/soc/marvell/octeontx2/rvu.c | 78 ++++++++++++++++++++ drivers/soc/marvell/octeontx2/rvu.h | 37 ++++++++++ drivers/soc/marvell/octeontx2/rvu_reg.h | 113 +++++++++++++++++++++++++++++ drivers/soc/marvell/octeontx2/rvu_struct.h | 36 +++++++++ 4 files changed, 264 insertions(+) create mode 100644 drivers/soc/marvell/octeontx2/rvu_reg.h create mode 100644 drivers/soc/marvell/octeontx2/rvu_struct.h diff --git a/drivers/soc/marvell/octeontx2/rvu.c b/drivers/soc/marvell/octeontx2/rvu.c index 5af4da6..d40fabf 100644 --- a/drivers/soc/marvell/octeontx2/rvu.c +++ b/drivers/soc/marvell/octeontx2/rvu.c @@ -16,6 +16,7 @@ #include #include "rvu.h" +#include "rvu_reg.h" #define DRV_NAME "octeontx2-af" #define DRV_STRING "Marvell OcteonTX2 RVU Admin Function Driver" @@ -33,6 +34,70 @@ MODULE_LICENSE("GPL v2"); MODULE_VERSION(DRV_VERSION); MODULE_DEVICE_TABLE(pci, rvu_id_table); +/* Poll a RVU block's register 'offset', for a 'zero' + * or 'nonzero' at bits specified by 'mask' + */ +int rvu_poll_reg(struct rvu *rvu, u64 block, u64 offset, u64 mask, bool zero) +{ + void __iomem *reg; + int timeout = 100; + u64 reg_val; + + reg = rvu->afreg_base + ((block << 28) | offset); + while (timeout) { + reg_val = readq(reg); + if (zero && !(reg_val & mask)) + return 0; + if (!zero && (reg_val & mask)) + return 0; + udelay(1); + cpu_relax(); + timeout--; + } + return -EBUSY; +} + +static void rvu_check_block_implemented(struct rvu *rvu) +{ + struct rvu_hwinfo *hw = rvu->hw; + struct rvu_block *block; + int blkid; + u64 cfg; + + /* For each block check if 'implemented' bit is set */ + for (blkid = 0; blkid < BLK_COUNT; blkid++) { + block = &hw->block[blkid]; + cfg = rvupf_read64(rvu, RVU_PF_BLOCK_ADDRX_DISC(blkid)); + if (cfg & BIT_ULL(11)) + block->implemented = true; + } +} + +static void rvu_block_reset(struct rvu *rvu, int blkaddr, u64 rst_reg) +{ + struct rvu_block *block = &rvu->hw->block[blkaddr]; + + if (!block->implemented) + return; + + rvu_write64(rvu, blkaddr, rst_reg, BIT_ULL(0)); + rvu_poll_reg(rvu, blkaddr, rst_reg, BIT_ULL(63), true); +} + +static void rvu_reset_all_blocks(struct rvu *rvu) +{ + /* Do a HW reset of all RVU blocks */ + rvu_block_reset(rvu, BLKADDR_NPA, NPA_AF_BLK_RST); + rvu_block_reset(rvu, BLKADDR_NIX0, NIX_AF_BLK_RST); + rvu_block_reset(rvu, BLKADDR_NPC, NPC_AF_BLK_RST); + rvu_block_reset(rvu, BLKADDR_SSO, SSO_AF_BLK_RST); + rvu_block_reset(rvu, BLKADDR_TIM, TIM_AF_BLK_RST); + rvu_block_reset(rvu, BLKADDR_CPT0, CPT_AF_BLK_RST); + rvu_block_reset(rvu, BLKADDR_NDC0, NDC_AF_BLK_RST); + rvu_block_reset(rvu, BLKADDR_NDC1, NDC_AF_BLK_RST); + rvu_block_reset(rvu, BLKADDR_NDC2, NDC_AF_BLK_RST); +} + static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct device *dev = &pdev->dev; @@ -43,6 +108,12 @@ static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (!rvu) return -ENOMEM; + rvu->hw = devm_kzalloc(dev, sizeof(struct rvu_hwinfo), GFP_KERNEL); + if (!rvu->hw) { + devm_kfree(dev, rvu); + return -ENOMEM; + } + pci_set_drvdata(pdev, rvu); rvu->pdev = pdev; rvu->dev = &pdev->dev; @@ -80,6 +151,11 @@ static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_release_regions; } + /* Check which blocks the HW supports */ + rvu_check_block_implemented(rvu); + + rvu_reset_all_blocks(rvu); + return 0; err_release_regions: @@ -88,6 +164,7 @@ static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci_disable_device(pdev); err_freemem: pci_set_drvdata(pdev, NULL); + devm_kfree(&pdev->dev, rvu->hw); devm_kfree(dev, rvu); return err; } @@ -100,6 +177,7 @@ static void rvu_remove(struct pci_dev *pdev) pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); + devm_kfree(&pdev->dev, rvu->hw); devm_kfree(&pdev->dev, rvu); } diff --git a/drivers/soc/marvell/octeontx2/rvu.h b/drivers/soc/marvell/octeontx2/rvu.h index 4a4b0ad..e2c54d0 100644 --- a/drivers/soc/marvell/octeontx2/rvu.h +++ b/drivers/soc/marvell/octeontx2/rvu.h @@ -11,6 +11,8 @@ #ifndef RVU_H #define RVU_H +#include "rvu_struct.h" + /* PCI device IDs */ #define PCI_DEVID_OCTEONTX2_RVU_AF 0xA065 @@ -21,11 +23,46 @@ #define NAME_SIZE 32 +struct rvu_block { + bool implemented; +}; + +struct rvu_hwinfo { + struct rvu_block block[BLK_COUNT]; /* Block info */ +}; + struct rvu { void __iomem *afreg_base; void __iomem *pfreg_base; struct pci_dev *pdev; struct device *dev; + struct rvu_hwinfo *hw; }; +static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val) +{ + writeq(val, rvu->afreg_base + ((block << 28) | offset)); +} + +static inline u64 rvu_read64(struct rvu *rvu, u64 block, u64 offset) +{ + return readq(rvu->afreg_base + ((block << 28) | offset)); +} + +static inline void rvupf_write64(struct rvu *rvu, u64 offset, u64 val) +{ + writeq(val, rvu->pfreg_base + offset); +} + +static inline u64 rvupf_read64(struct rvu *rvu, u64 offset) +{ + return readq(rvu->pfreg_base + offset); +} + +/* Function Prototypes + * RVU + */ + +int rvu_poll_reg(struct rvu *rvu, u64 block, u64 offset, u64 mask, bool zero); + #endif /* RVU_H */ diff --git a/drivers/soc/marvell/octeontx2/rvu_reg.h b/drivers/soc/marvell/octeontx2/rvu_reg.h new file mode 100644 index 0000000..e7abd7e --- /dev/null +++ b/drivers/soc/marvell/octeontx2/rvu_reg.h @@ -0,0 +1,113 @@ +/* SPDX-License-Identifier: GPL-2.0 + * Marvell OcteonTx2 RVU Admin Function driver + * + * Copyright (C) 2018 Marvell International Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef RVU_REG_H +#define RVU_REG_H + +/* Admin function registers */ +#define RVU_AF_MSIXTR_BASE (0x10) +#define RVU_AF_ECO (0x20) +#define RVU_AF_BLK_RST (0x30) +#define RVU_AF_PF_BAR4_ADDR (0x40) +#define RVU_AF_RAS (0x100) +#define RVU_AF_RAS_W1S (0x108) +#define RVU_AF_RAS_ENA_W1S (0x110) +#define RVU_AF_RAS_ENA_W1C (0x118) +#define RVU_AF_GEN_INT (0x120) +#define RVU_AF_GEN_INT_W1S (0x128) +#define RVU_AF_GEN_INT_ENA_W1S (0x130) +#define RVU_AF_GEN_INT_ENA_W1C (0x138) +#define RVU_AF_AFPF_MBOX0 (0x02000) +#define RVU_AF_AFPF_MBOX1 (0x02008) +#define RVU_AF_AFPFX_MBOXX(a, b) (0x2000 | (a) << 4 | (b) << 3) +#define RVU_AF_PFME_STATUS (0x2800) +#define RVU_AF_PFTRPEND (0x2810) +#define RVU_AF_PFTRPEND_W1S (0x2820) +#define RVU_AF_PF_RST (0x2840) +#define RVU_AF_HWVF_RST (0x2850) +#define RVU_AF_PFAF_MBOX_INT (0x2880) +#define RVU_AF_PFAF_MBOX_INT_W1S (0x2888) +#define RVU_AF_PFAF_MBOX_INT_ENA_W1S (0x2890) +#define RVU_AF_PFAF_MBOX_INT_ENA_W1C (0x2898) +#define RVU_AF_PFFLR_INT (0x28a0) +#define RVU_AF_PFFLR_INT_W1S (0x28a8) +#define RVU_AF_PFFLR_INT_ENA_W1S (0x28b0) +#define RVU_AF_PFFLR_INT_ENA_W1C (0x28b8) +#define RVU_AF_PFME_INT (0x28c0) +#define RVU_AF_PFME_INT_W1S (0x28c8) +#define RVU_AF_PFME_INT_ENA_W1S (0x28d0) +#define RVU_AF_PFME_INT_ENA_W1C (0x28d8) + +/* Admin function's privileged PF/VF registers */ +#define RVU_PRIV_CONST (0x8000000) +#define RVU_PRIV_GEN_CFG (0x8000010) +#define RVU_PRIV_CLK_CFG (0x8000020) +#define RVU_PRIV_ACTIVE_PC (0x8000030) +#define RVU_PRIV_PFX_CFG(a) (0x8000100 | (a) << 16) +#define RVU_PRIV_PFX_MSIX_CFG(a) (0x8000110 | (a) << 16) +#define RVU_PRIV_PFX_ID_CFG(a) (0x8000120 | (a) << 16) +#define RVU_PRIV_PFX_INT_CFG(a) (0x8000200 | (a) << 16) +#define RVU_PRIV_PFX_NIX_CFG (0x8000300) +#define RVU_PRIV_PFX_NPA_CFG (0x8000310) +#define RVU_PRIV_PFX_SSO_CFG (0x8000320) +#define RVU_PRIV_PFX_SSOW_CFG (0x8000330) +#define RVU_PRIV_PFX_TIM_CFG (0x8000340) +#define RVU_PRIV_PFX_CPT_CFG (0x8000350) +#define RVU_PRIV_BLOCK_TYPEX_REV(a) (0x8000400 | (a) << 3) +#define RVU_PRIV_HWVFX_INT_CFG(a) (0x8001280 | (a) << 16) +#define RVU_PRIV_HWVFX_NIX_CFG (0x8001300) +#define RVU_PRIV_HWVFX_NPA_CFG (0x8001310) +#define RVU_PRIV_HWVFX_SSO_CFG (0x8001320) +#define RVU_PRIV_HWVFX_SSOW_CFG (0x8001330) +#define RVU_PRIV_HWVFX_TIM_CFG (0x8001340) +#define RVU_PRIV_HWVFX_CPT_CFG (0x8001350) + +/* RVU PF registers */ +#define RVU_PF_VFX_PFVF_MBOX0 (0x00000) +#define RVU_PF_VFX_PFVF_MBOX1 (0x00008) +#define RVU_PF_VFX_PFVF_MBOXX(a, b) (0x0 | (a) << 12 | (b) << 3) +#define RVU_PF_VF_BAR4_ADDR (0x10) +#define RVU_PF_BLOCK_ADDRX_DISC(a) (0x200 | (a) << 3) +#define RVU_PF_VFME_STATUSX(a) (0x800 | (a) << 3) +#define RVU_PF_VFTRPENDX(a) (0x820 | (a) << 3) +#define RVU_PF_VFTRPEND_W1SX(a) (0x840 | (a) << 3) +#define RVU_PF_VFPF_MBOX_INTX(a) (0x880 | (a) << 3) +#define RVU_PF_VFPF_MBOX_INT_W1SX(a) (0x8A0 | (a) << 3) +#define RVU_PF_VFPF_MBOX_INT_ENA_W1SX(a) (0x8C0 | (a) << 3) +#define RVU_PF_VFPF_MBOX_INT_ENA_W1CX(a) (0x8E0 | (a) << 3) +#define RVU_PF_VFFLR_INTX(a) (0x900 | (a) << 3) +#define RVU_PF_VFFLR_INT_W1SX(a) (0x920 | (a) << 3) +#define RVU_PF_VFFLR_INT_ENA_W1SX(a) (0x940 | (a) << 3) +#define RVU_PF_VFFLR_INT_ENA_W1CX(a) (0x960 | (a) << 3) +#define RVU_PF_VFME_INTX(a) (0x980 | (a) << 3) +#define RVU_PF_VFME_INT_W1SX(a) (0x9A0 | (a) << 3) +#define RVU_PF_VFME_INT_ENA_W1SX(a) (0x9C0 | (a) << 3) +#define RVU_PF_VFME_INT_ENA_W1CX(a) (0x9E0 | (a) << 3) +#define RVU_PF_PFAF_MBOX0 (0xC00) +#define RVU_PF_PFAF_MBOX1 (0xC08) +#define RVU_PF_PFAF_MBOXX(a) (0xC00 | (a) << 3) +#define RVU_PF_INT (0xc20) +#define RVU_PF_INT_W1S (0xc28) +#define RVU_PF_INT_ENA_W1S (0xc30) +#define RVU_PF_INT_ENA_W1C (0xc38) +#define RVU_PF_MSIX_VECX_ADDR(a) (0x000 | (a) << 4) +#define RVU_PF_MSIX_VECX_CTL(a) (0x008 | (a) << 4) +#define RVU_PF_MSIX_PBAX(a) (0xF0000 | (a) << 3) + + +#define NPA_AF_BLK_RST (0x0000) +#define NIX_AF_BLK_RST (0x00B0) +#define SSO_AF_BLK_RST (0x10f8) +#define TIM_AF_BLK_RST (0x10) +#define CPT_AF_BLK_RST (0x46000) +#define NDC_AF_BLK_RST (0x002F0) +#define NPC_AF_BLK_RST (0x00040) + +#endif /* RVU_REG_H */ diff --git a/drivers/soc/marvell/octeontx2/rvu_struct.h b/drivers/soc/marvell/octeontx2/rvu_struct.h new file mode 100644 index 0000000..4122559 --- /dev/null +++ b/drivers/soc/marvell/octeontx2/rvu_struct.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 + * Marvell OcteonTx2 RVU Admin Function driver + * + * Copyright (C) 2018 Marvell International Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef RVU_STRUCT_H +#define RVU_STRUCT_H + +/* + * RVU Block Address Enumeration + */ +enum rvu_block_addr_e { + BLKADDR_RVUM = 0x0ULL, + BLKADDR_LMT = 0x1ULL, + BLKADDR_MSIX = 0x2ULL, + BLKADDR_NPA = 0x3ULL, + BLKADDR_NIX0 = 0x4ULL, + BLKADDR_NIX1 = 0x5ULL, + BLKADDR_NPC = 0x6ULL, + BLKADDR_SSO = 0x7ULL, + BLKADDR_SSOW = 0x8ULL, + BLKADDR_TIM = 0x9ULL, + BLKADDR_CPT0 = 0xaULL, + BLKADDR_CPT1 = 0xbULL, + BLKADDR_NDC0 = 0xcULL, + BLKADDR_NDC1 = 0xdULL, + BLKADDR_NDC2 = 0xeULL, + BLK_COUNT = 0xfULL, +}; + +#endif /* RVU_STRUCT_H */