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kernel/drivers/net/ethernet/freescale/fman/fman.h
Aleksandr Mishin bd50c4125c fsl/fman: Validate cell-index value obtained from Device Tree 
Cell-index value is obtained from Device Tree and then used to calculate
the index for accessing arrays port_mfl[], mac_mfl[] and intr_mng[].
In case of broken DT due to any error cell-index can contain any value
and it is possible to go beyond the array boundaries which can lead
at least to memory corruption.

Validate cell-index value obtained from Device Tree.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Reviewed-by: Sean Anderson <sean.anderson@seco.com>
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Link: https://patch.msgid.link/20241028065824.15452-1-amishin@t-argos.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-31 19:05:09 -07:00

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/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later */
/*
* Copyright 2008 - 2015 Freescale Semiconductor Inc.
* Copyright 2020 NXP
*/
#ifndef __FM_H
#define __FM_H
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/of_irq.h>
/* FM Frame descriptor macros */
/* Frame queue Context Override */
#define FM_FD_CMD_FCO 0x80000000
#define FM_FD_CMD_RPD 0x40000000 /* Read Prepended Data */
#define FM_FD_CMD_UPD 0x20000000 /* Update Prepended Data */
#define FM_FD_CMD_DTC 0x10000000 /* Do L4 Checksum */
/* TX-Port: Unsupported Format */
#define FM_FD_ERR_UNSUPPORTED_FORMAT 0x04000000
/* TX Port: Length Error */
#define FM_FD_ERR_LENGTH 0x02000000
#define FM_FD_ERR_DMA 0x01000000 /* DMA Data error */
/* IPR frame (not error) */
#define FM_FD_IPR 0x00000001
/* IPR non-consistent-sp */
#define FM_FD_ERR_IPR_NCSP (0x00100000 | FM_FD_IPR)
/* IPR error */
#define FM_FD_ERR_IPR (0x00200000 | FM_FD_IPR)
/* IPR timeout */
#define FM_FD_ERR_IPR_TO (0x00300000 | FM_FD_IPR)
/* TX Port: Length Error */
#define FM_FD_ERR_IPRE (FM_FD_ERR_IPR & ~FM_FD_IPR)
/* Rx FIFO overflow, FCS error, code error, running disparity error
* (SGMII and TBI modes), FIFO parity error. PHY Sequence error,
* PHY error control character detected.
*/
#define FM_FD_ERR_PHYSICAL 0x00080000
/* Frame too long OR Frame size exceeds max_length_frame */
#define FM_FD_ERR_SIZE 0x00040000
/* classification discard */
#define FM_FD_ERR_CLS_DISCARD 0x00020000
/* Extract Out of Frame */
#define FM_FD_ERR_EXTRACTION 0x00008000
/* No Scheme Selected */
#define FM_FD_ERR_NO_SCHEME 0x00004000
/* Keysize Overflow */
#define FM_FD_ERR_KEYSIZE_OVERFLOW 0x00002000
/* Frame color is red */
#define FM_FD_ERR_COLOR_RED 0x00000800
/* Frame color is yellow */
#define FM_FD_ERR_COLOR_YELLOW 0x00000400
/* Parser Time out Exceed */
#define FM_FD_ERR_PRS_TIMEOUT 0x00000080
/* Invalid Soft Parser instruction */
#define FM_FD_ERR_PRS_ILL_INSTRUCT 0x00000040
/* Header error was identified during parsing */
#define FM_FD_ERR_PRS_HDR_ERR 0x00000020
/* Frame parsed beyind 256 first bytes */
#define FM_FD_ERR_BLOCK_LIMIT_EXCEEDED 0x00000008
/* non Frame-Manager error */
#define FM_FD_RX_STATUS_ERR_NON_FM 0x00400000
/* FMan driver defines */
#define FMAN_BMI_FIFO_UNITS 0x100
#define OFFSET_UNITS 16
/* BMan defines */
#define BM_MAX_NUM_OF_POOLS 64 /* Buffers pools */
#define FMAN_PORT_MAX_EXT_POOLS_NUM 8 /* External BM pools per Rx port */
/* General defines */
#define MAX_NUM_OF_MACS 10
struct fman; /* FMan data */
/* Enum for defining port types */
enum fman_port_type {
FMAN_PORT_TYPE_TX = 0, /* TX Port */
FMAN_PORT_TYPE_RX, /* RX Port */
};
struct fman_rev_info {
u8 major; /* Major revision */
u8 minor; /* Minor revision */
};
enum fman_exceptions {
FMAN_EX_DMA_BUS_ERROR = 0, /* DMA bus error. */
FMAN_EX_DMA_READ_ECC, /* Read Buffer ECC error */
FMAN_EX_DMA_SYSTEM_WRITE_ECC, /* Write Buffer ECC err on sys side */
FMAN_EX_DMA_FM_WRITE_ECC, /* Write Buffer ECC error on FM side */
FMAN_EX_DMA_SINGLE_PORT_ECC, /* Single Port ECC error on FM side */
FMAN_EX_FPM_STALL_ON_TASKS, /* Stall of tasks on FPM */
FMAN_EX_FPM_SINGLE_ECC, /* Single ECC on FPM. */
FMAN_EX_FPM_DOUBLE_ECC, /* Double ECC error on FPM ram access */
FMAN_EX_QMI_SINGLE_ECC, /* Single ECC on QMI. */
FMAN_EX_QMI_DOUBLE_ECC, /* Double bit ECC occurred on QMI */
FMAN_EX_QMI_DEQ_FROM_UNKNOWN_PORTID,/* DeQ from unknown port id */
FMAN_EX_BMI_LIST_RAM_ECC, /* Linked List RAM ECC error */
FMAN_EX_BMI_STORAGE_PROFILE_ECC,/* storage profile */
FMAN_EX_BMI_STATISTICS_RAM_ECC,/* Statistics RAM ECC Err Enable */
FMAN_EX_BMI_DISPATCH_RAM_ECC, /* Dispatch RAM ECC Error Enable */
FMAN_EX_IRAM_ECC, /* Double bit ECC occurred on IRAM */
FMAN_EX_MURAM_ECC /* Double bit ECC occurred on MURAM */
};
/* Parse results memory layout */
struct fman_prs_result {
u8 lpid; /* Logical port id */
u8 shimr; /* Shim header result */
__be16 l2r; /* Layer 2 result */
__be16 l3r; /* Layer 3 result */
u8 l4r; /* Layer 4 result */
u8 cplan; /* Classification plan id */
__be16 nxthdr; /* Next Header */
__be16 cksum; /* Running-sum */
/* Flags&fragment-offset field of the last IP-header */
__be16 flags_frag_off;
/* Routing type field of a IPV6 routing extension header */
u8 route_type;
/* Routing Extension Header Present; last bit is IP valid */
u8 rhp_ip_valid;
u8 shim_off[2]; /* Shim offset */
u8 ip_pid_off; /* IP PID (last IP-proto) offset */
u8 eth_off; /* ETH offset */
u8 llc_snap_off; /* LLC_SNAP offset */
u8 vlan_off[2]; /* VLAN offset */
u8 etype_off; /* ETYPE offset */
u8 pppoe_off; /* PPP offset */
u8 mpls_off[2]; /* MPLS offset */
u8 ip_off[2]; /* IP offset */
u8 gre_off; /* GRE offset */
u8 l4_off; /* Layer 4 offset */
u8 nxthdr_off; /* Parser end point */
};
/* A structure for defining buffer prefix area content. */
struct fman_buffer_prefix_content {
/* Number of bytes to be left at the beginning of the external
* buffer; Note that the private-area will start from the base
* of the buffer address.
*/
u16 priv_data_size;
/* true to pass the parse result to/from the FM;
* User may use FM_PORT_GetBufferPrsResult() in
* order to get the parser-result from a buffer.
*/
bool pass_prs_result;
/* true to pass the timeStamp to/from the FM User */
bool pass_time_stamp;
/* true to pass the KG hash result to/from the FM User may
* use FM_PORT_GetBufferHashResult() in order to get the
* parser-result from a buffer.
*/
bool pass_hash_result;
/* Add all other Internal-Context information: AD,
* hash-result, key, etc.
*/
u16 data_align;
};
/* A structure of information about each of the external
* buffer pools used by a port or storage-profile.
*/
struct fman_ext_pool_params {
u8 id; /* External buffer pool id */
u16 size; /* External buffer pool buffer size */
};
/* A structure for informing the driver about the external
* buffer pools allocated in the BM and used by a port or a
* storage-profile.
*/
struct fman_ext_pools {
u8 num_of_pools_used; /* Number of pools use by this port */
struct fman_ext_pool_params ext_buf_pool[FMAN_PORT_MAX_EXT_POOLS_NUM];
/* Parameters for each port */
};
/* A structure for defining BM pool depletion criteria */
struct fman_buf_pool_depletion {
/* select mode in which pause frames will be sent after a
* number of pools (all together!) are depleted
*/
bool pools_grp_mode_enable;
/* the number of depleted pools that will invoke pause
* frames transmission.
*/
u8 num_of_pools;
/* For each pool, true if it should be considered for
* depletion (Note - this pool must be used by this port!).
*/
bool pools_to_consider[BM_MAX_NUM_OF_POOLS];
/* select mode in which pause frames will be sent
* after a single-pool is depleted;
*/
bool single_pool_mode_enable;
/* For each pool, true if it should be considered
* for depletion (Note - this pool must be used by this port!)
*/
bool pools_to_consider_for_single_mode[BM_MAX_NUM_OF_POOLS];
};
/* Enum for inter-module interrupts registration */
enum fman_event_modules {
FMAN_MOD_MAC = 0, /* MAC event */
FMAN_MOD_FMAN_CTRL, /* FMAN Controller */
FMAN_MOD_DUMMY_LAST
};
/* Enum for interrupts types */
enum fman_intr_type {
FMAN_INTR_TYPE_ERR,
FMAN_INTR_TYPE_NORMAL
};
/* Enum for inter-module interrupts registration */
enum fman_inter_module_event {
FMAN_EV_ERR_MAC0 = 0, /* MAC 0 error event */
FMAN_EV_ERR_MAC1, /* MAC 1 error event */
FMAN_EV_ERR_MAC2, /* MAC 2 error event */
FMAN_EV_ERR_MAC3, /* MAC 3 error event */
FMAN_EV_ERR_MAC4, /* MAC 4 error event */
FMAN_EV_ERR_MAC5, /* MAC 5 error event */
FMAN_EV_ERR_MAC6, /* MAC 6 error event */
FMAN_EV_ERR_MAC7, /* MAC 7 error event */
FMAN_EV_ERR_MAC8, /* MAC 8 error event */
FMAN_EV_ERR_MAC9, /* MAC 9 error event */
FMAN_EV_MAC0, /* MAC 0 event (Magic packet detection) */
FMAN_EV_MAC1, /* MAC 1 event (Magic packet detection) */
FMAN_EV_MAC2, /* MAC 2 (Magic packet detection) */
FMAN_EV_MAC3, /* MAC 3 (Magic packet detection) */
FMAN_EV_MAC4, /* MAC 4 (Magic packet detection) */
FMAN_EV_MAC5, /* MAC 5 (Magic packet detection) */
FMAN_EV_MAC6, /* MAC 6 (Magic packet detection) */
FMAN_EV_MAC7, /* MAC 7 (Magic packet detection) */
FMAN_EV_MAC8, /* MAC 8 event (Magic packet detection) */
FMAN_EV_MAC9, /* MAC 9 event (Magic packet detection) */
FMAN_EV_FMAN_CTRL_0, /* Fman controller event 0 */
FMAN_EV_FMAN_CTRL_1, /* Fman controller event 1 */
FMAN_EV_FMAN_CTRL_2, /* Fman controller event 2 */
FMAN_EV_FMAN_CTRL_3, /* Fman controller event 3 */
FMAN_EV_CNT
};
struct fman_intr_src {
void (*isr_cb)(void *src_arg);
void *src_handle;
};
/** fman_exceptions_cb
* fman - Pointer to FMan
* exception - The exception.
*
* Exceptions user callback routine, will be called upon an exception
* passing the exception identification.
*
* Return: irq status
*/
typedef irqreturn_t (fman_exceptions_cb)(struct fman *fman,
enum fman_exceptions exception);
/** fman_bus_error_cb
* fman - Pointer to FMan
* port_id - Port id
* addr - Address that caused the error
* tnum - Owner of error
* liodn - Logical IO device number
*
* Bus error user callback routine, will be called upon bus error,
* passing parameters describing the errors and the owner.
*
* Return: IRQ status
*/
typedef irqreturn_t (fman_bus_error_cb)(struct fman *fman, u8 port_id,
u64 addr, u8 tnum, u16 liodn);
/* Structure that holds information received from device tree */
struct fman_dts_params {
void __iomem *base_addr; /* FMan virtual address */
struct resource *res; /* FMan memory resource */
u8 id; /* FMan ID */
int err_irq; /* FMan Error IRQ */
u16 clk_freq; /* FMan clock freq (In Mhz) */
u32 qman_channel_base; /* QMan channels base */
u32 num_of_qman_channels; /* Number of QMan channels */
struct resource muram_res; /* MURAM resource */
};
struct fman {
struct device *dev;
void __iomem *base_addr;
struct fman_intr_src intr_mng[FMAN_EV_CNT];
struct fman_fpm_regs __iomem *fpm_regs;
struct fman_bmi_regs __iomem *bmi_regs;
struct fman_qmi_regs __iomem *qmi_regs;
struct fman_dma_regs __iomem *dma_regs;
struct fman_hwp_regs __iomem *hwp_regs;
struct fman_kg_regs __iomem *kg_regs;
fman_exceptions_cb *exception_cb;
fman_bus_error_cb *bus_error_cb;
/* Spinlock for FMan use */
spinlock_t spinlock;
struct fman_state_struct *state;
struct fman_cfg *cfg;
struct muram_info *muram;
struct fman_keygen *keygen;
/* cam section in muram */
unsigned long cam_offset;
size_t cam_size;
/* Fifo in MURAM */
unsigned long fifo_offset;
size_t fifo_size;
u32 liodn_base[64];
u32 liodn_offset[64];
struct fman_dts_params dts_params;
};
/* Structure for port-FM communication during fman_port_init. */
struct fman_port_init_params {
u8 port_id; /* port Id */
enum fman_port_type port_type; /* Port type */
u16 port_speed; /* Port speed */
u16 liodn_offset; /* Port's requested resource */
u8 num_of_tasks; /* Port's requested resource */
u8 num_of_extra_tasks; /* Port's requested resource */
u8 num_of_open_dmas; /* Port's requested resource */
u8 num_of_extra_open_dmas; /* Port's requested resource */
u32 size_of_fifo; /* Port's requested resource */
u32 extra_size_of_fifo; /* Port's requested resource */
u8 deq_pipeline_depth; /* Port's requested resource */
u16 max_frame_length; /* Port's max frame length. */
u16 liodn_base;
/* LIODN base for this port, to be used together with LIODN offset. */
};
void fman_get_revision(struct fman *fman, struct fman_rev_info *rev_info);
void fman_register_intr(struct fman *fman, enum fman_event_modules mod,
u8 mod_id, enum fman_intr_type intr_type,
void (*f_isr)(void *h_src_arg), void *h_src_arg);
void fman_unregister_intr(struct fman *fman, enum fman_event_modules mod,
u8 mod_id, enum fman_intr_type intr_type);
int fman_set_port_params(struct fman *fman,
struct fman_port_init_params *port_params);
int fman_reset_mac(struct fman *fman, u8 mac_id);
u16 fman_get_clock_freq(struct fman *fman);
u32 fman_get_bmi_max_fifo_size(struct fman *fman);
int fman_set_mac_max_frame(struct fman *fman, u8 mac_id, u16 mfl);
u32 fman_get_qman_channel_id(struct fman *fman, u32 port_id);
struct resource *fman_get_mem_region(struct fman *fman);
u16 fman_get_max_frm(void);
int fman_get_rx_extra_headroom(void);
#ifdef CONFIG_DPAA_ERRATUM_A050385
bool fman_has_errata_a050385(void);
#endif
struct fman *fman_bind(struct device *dev);
#endif /* __FM_H */
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