82f93cf46d
Getting RAM info just once per driver's lifetime (during chip
recognition) is not enough as it may get adjusted later (depending on
the used firmware). Subsequent inits may load different firmwares so a
full RAM recognition is required on every PCIe setup. This is especially
important since implementing hardware reset on a firmware crash.
Moreover calling brcmf_chip_get_raminfo() makes sure that RAM core is
up. It's important as having BCMA_CORE_SYS_MEM down on BCM4366 was
resulting in firmware failing to initialize and following error:
[ 65.657546] brcmfmac 0000:01:00.0: brcmf_pcie_download_fw_nvram: Invalid shared RAM address 0x04000001
This change makes brcmf_chip_get_raminfo() call during chip recognition
redundant for PCIe devices but SDIO and USB still need it and it's a
very small overhead anyway.
Fixes: 4684997d9e ("brcmfmac: reset PCIe bus on a firmware crash")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
// SPDX-License-Identifier: ISC
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/*
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* Copyright (c) 2014 Broadcom Corporation
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*/
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#ifndef BRCMF_CHIP_H
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#define BRCMF_CHIP_H
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#include <linux/types.h>
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#define CORE_CC_REG(base, field) \
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(base + offsetof(struct chipcregs, field))
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/**
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* struct brcmf_chip - chip level information.
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*
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* @chip: chip identifier.
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* @chiprev: chip revision.
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* @cc_caps: chipcommon core capabilities.
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* @cc_caps_ext: chipcommon core extended capabilities.
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* @pmucaps: PMU capabilities.
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* @pmurev: PMU revision.
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* @rambase: RAM base address (only applicable for ARM CR4 chips).
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* @ramsize: amount of RAM on chip including retention.
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* @srsize: amount of retention RAM on chip.
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* @name: string representation of the chip identifier.
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*/
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struct brcmf_chip {
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u32 chip;
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u32 chiprev;
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u32 cc_caps;
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u32 cc_caps_ext;
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u32 pmucaps;
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u32 pmurev;
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u32 rambase;
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u32 ramsize;
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u32 srsize;
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char name[12];
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};
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/**
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* struct brcmf_core - core related information.
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*
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* @id: core identifier.
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* @rev: core revision.
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* @base: base address of core register space.
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*/
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struct brcmf_core {
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u16 id;
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u16 rev;
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u32 base;
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};
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/**
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* struct brcmf_buscore_ops - buscore specific callbacks.
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*
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* @read32: read 32-bit value over bus.
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* @write32: write 32-bit value over bus.
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* @prepare: prepare bus for core configuration.
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* @setup: bus-specific core setup.
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* @active: chip becomes active.
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* The callback should use the provided @rstvec when non-zero.
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*/
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struct brcmf_buscore_ops {
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u32 (*read32)(void *ctx, u32 addr);
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void (*write32)(void *ctx, u32 addr, u32 value);
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int (*prepare)(void *ctx);
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int (*reset)(void *ctx, struct brcmf_chip *chip);
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int (*setup)(void *ctx, struct brcmf_chip *chip);
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void (*activate)(void *ctx, struct brcmf_chip *chip, u32 rstvec);
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};
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int brcmf_chip_get_raminfo(struct brcmf_chip *pub);
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struct brcmf_chip *brcmf_chip_attach(void *ctx,
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const struct brcmf_buscore_ops *ops);
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void brcmf_chip_detach(struct brcmf_chip *chip);
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struct brcmf_core *brcmf_chip_get_core(struct brcmf_chip *chip, u16 coreid);
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struct brcmf_core *brcmf_chip_get_chipcommon(struct brcmf_chip *chip);
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struct brcmf_core *brcmf_chip_get_pmu(struct brcmf_chip *pub);
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bool brcmf_chip_iscoreup(struct brcmf_core *core);
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void brcmf_chip_coredisable(struct brcmf_core *core, u32 prereset, u32 reset);
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void brcmf_chip_resetcore(struct brcmf_core *core, u32 prereset, u32 reset,
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u32 postreset);
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void brcmf_chip_set_passive(struct brcmf_chip *ci);
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bool brcmf_chip_set_active(struct brcmf_chip *ci, u32 rstvec);
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bool brcmf_chip_sr_capable(struct brcmf_chip *pub);
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char *brcmf_chip_name(u32 chipid, u32 chiprev, char *buf, uint len);
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#endif /* BRCMF_AXIDMP_H */
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