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Message-ID: <1496040794-6163-8-git-send-email-Yuval.Mintz@cavium.com> Date: Mon, 29 May 2017 09:53:11 +0300 From: Yuval Mintz <Yuval.Mintz@...ium.com> To: <davem@...emloft.net>, <netdev@...r.kernel.org> CC: Yuval Mintz <Yuval.Mintz@...ium.com> Subject: [PATCH v2 net-next 07/10] qed: Diffrentiate adapter-specific attentions There are 4 attention bits in AEU that have different meaning for QL45xxx and QL41xxx adapters. Instead of doing a massive infrastructure change in favor of these bits, we implement a point fix where only those four would change meaning dependent on the adapter involved. Signed-off-by: Yuval Mintz <Yuval.Mintz@...ium.com> --- drivers/net/ethernet/qlogic/qed/qed_int.c | 80 ++++++++++++++++++++++++++----- 1 file changed, 69 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_int.c b/drivers/net/ethernet/qlogic/qed/qed_int.c index 7f4f8e7..de6f60c 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_int.c +++ b/drivers/net/ethernet/qlogic/qed/qed_int.c @@ -90,6 +90,12 @@ struct aeu_invert_reg_bit { /* Multiple bits start with this offset */ #define ATTENTION_OFFSET_MASK (0x000ff000) #define ATTENTION_OFFSET_SHIFT (12) + +#define ATTENTION_BB_MASK (0x00700000) +#define ATTENTION_BB_SHIFT (20) +#define ATTENTION_BB(value) (value << ATTENTION_BB_SHIFT) +#define ATTENTION_BB_DIFFERENT BIT(23) + unsigned int flags; /* Callback to call if attention will be triggered */ @@ -381,6 +387,25 @@ static int qed_dorq_attn_cb(struct qed_hwfn *p_hwfn) return -EINVAL; } +/* Instead of major changes to the data-structure, we have a some 'special' + * identifiers for sources that changed meaning between adapters. + */ +enum aeu_invert_reg_special_type { + AEU_INVERT_REG_SPECIAL_CNIG_0, + AEU_INVERT_REG_SPECIAL_CNIG_1, + AEU_INVERT_REG_SPECIAL_CNIG_2, + AEU_INVERT_REG_SPECIAL_CNIG_3, + AEU_INVERT_REG_SPECIAL_MAX, +}; + +static struct aeu_invert_reg_bit +aeu_descs_special[AEU_INVERT_REG_SPECIAL_MAX] = { + {"CNIG port 0", ATTENTION_SINGLE, NULL, BLOCK_CNIG}, + {"CNIG port 1", ATTENTION_SINGLE, NULL, BLOCK_CNIG}, + {"CNIG port 2", ATTENTION_SINGLE, NULL, BLOCK_CNIG}, + {"CNIG port 3", ATTENTION_SINGLE, NULL, BLOCK_CNIG}, +}; + /* Notice aeu_invert_reg must be defined in the same order of bits as HW; */ static struct aeu_invert_reg aeu_descs[NUM_ATTN_REGS] = { { @@ -427,8 +452,22 @@ static int qed_dorq_attn_cb(struct qed_hwfn *p_hwfn) (33 << ATTENTION_OFFSET_SHIFT), NULL, MAX_BLOCK_ID}, {"General Attention 35", ATTENTION_SINGLE, NULL, MAX_BLOCK_ID}, - {"CNIG port %d", (4 << ATTENTION_LENGTH_SHIFT), - NULL, BLOCK_CNIG}, + {"NWS Parity", + ATTENTION_PAR | ATTENTION_BB_DIFFERENT | + ATTENTION_BB(AEU_INVERT_REG_SPECIAL_CNIG_0), + NULL, BLOCK_NWS}, + {"NWS Interrupt", + ATTENTION_SINGLE | ATTENTION_BB_DIFFERENT | + ATTENTION_BB(AEU_INVERT_REG_SPECIAL_CNIG_1), + NULL, BLOCK_NWS}, + {"NWM Parity", + ATTENTION_PAR | ATTENTION_BB_DIFFERENT | + ATTENTION_BB(AEU_INVERT_REG_SPECIAL_CNIG_2), + NULL, BLOCK_NWM}, + {"NWM Interrupt", + ATTENTION_SINGLE | ATTENTION_BB_DIFFERENT | + ATTENTION_BB(AEU_INVERT_REG_SPECIAL_CNIG_3), + NULL, BLOCK_NWM}, {"MCP CPU", ATTENTION_SINGLE, qed_mcp_attn_cb, MAX_BLOCK_ID}, {"MCP Watchdog timer", ATTENTION_SINGLE, @@ -566,6 +605,27 @@ static int qed_dorq_attn_cb(struct qed_hwfn *p_hwfn) }, }; +static struct aeu_invert_reg_bit * +qed_int_aeu_translate(struct qed_hwfn *p_hwfn, + struct aeu_invert_reg_bit *p_bit) +{ + if (!QED_IS_BB(p_hwfn->cdev)) + return p_bit; + + if (!(p_bit->flags & ATTENTION_BB_DIFFERENT)) + return p_bit; + + return &aeu_descs_special[(p_bit->flags & ATTENTION_BB_MASK) >> + ATTENTION_BB_SHIFT]; +} + +static bool qed_int_is_parity_flag(struct qed_hwfn *p_hwfn, + struct aeu_invert_reg_bit *p_bit) +{ + return !!(qed_int_aeu_translate(p_hwfn, p_bit)->flags & + ATTENTION_PARITY); +} + #define ATTN_STATE_BITS (0xfff) #define ATTN_BITS_MASKABLE (0x3ff) struct qed_sb_attn_info { @@ -799,7 +859,7 @@ static int qed_int_deassertion(struct qed_hwfn *p_hwfn, for (j = 0, bit_idx = 0; bit_idx < 32; j++) { struct aeu_invert_reg_bit *p_bit = &p_aeu->bits[j]; - if ((p_bit->flags & ATTENTION_PARITY) && + if (qed_int_is_parity_flag(p_hwfn, p_bit) && !!(parities & BIT(bit_idx))) qed_int_deassertion_parity(p_hwfn, p_bit, bit_idx); @@ -838,14 +898,11 @@ static int qed_int_deassertion(struct qed_hwfn *p_hwfn, u32 bitmask; p_aeu = &sb_attn_sw->p_aeu_desc[i].bits[j]; - - /* No need to handle parity-only bits */ - if (p_aeu->flags == ATTENTION_PAR) - continue; + p_aeu = qed_int_aeu_translate(p_hwfn, p_aeu); bit = bit_idx; bit_len = ATTENTION_LENGTH(p_aeu->flags); - if (p_aeu->flags & ATTENTION_PAR_INT) { + if (qed_int_is_parity_flag(p_hwfn, p_aeu)) { /* Skip Parity */ bit++; bit_len--; @@ -1104,12 +1161,13 @@ static void qed_int_sb_attn_init(struct qed_hwfn *p_hwfn, for (i = 0; i < NUM_ATTN_REGS; i++) { /* j is array index, k is bit index */ for (j = 0, k = 0; k < 32; j++) { - unsigned int flags = aeu_descs[i].bits[j].flags; + struct aeu_invert_reg_bit *p_aeu; - if (flags & ATTENTION_PARITY) + p_aeu = &aeu_descs[i].bits[j]; + if (qed_int_is_parity_flag(p_hwfn, p_aeu)) sb_info->parity_mask[i] |= 1 << k; - k += ATTENTION_LENGTH(flags); + k += ATTENTION_LENGTH(p_aeu->flags); } DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "Attn Mask [Reg %d]: 0x%08x\n", -- 1.9.3
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