Commit 54d55781 authored by Sunil Goutham's avatar Sunil Goutham Committed by David S. Miller
Browse files

octeontx2-af: Reset all RVU blocks 



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: default avatarSunil Goutham <sgoutham@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 54494aa5

drivers/net/ethernet/marvell/octeontx2/af/rvu.c

+77 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/sysfs.h>



#include "rvu.h"

#include "rvu_reg.h"



#define DRV_NAME	"octeontx2-af"

#define DRV_STRING      "Marvell OcteonTX2 RVU Admin Function Driver"
@@ -33,6 +34,69 @@ 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;

		usleep_range(1, 2);

		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 +107,12 @@ 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 +150,11 @@ 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 +163,7 @@ 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 +176,7 @@ 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);

}

drivers/net/ethernet/marvell/octeontx2/af/rvu.h

+37 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h

0 → 100644
+112 −0
Original line number Diff line number Diff line 
/* 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 */

drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h

0 → 100644
+34 −0
Original line number Diff line number Diff line 
/* 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 */