From: Birger Koblitz Date: Tue, 7 Sep 2021 16:51:10 +0000 (+0200) Subject: realtek: Packet Inspection Engine support for RTL839x SoCs X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=2d8d81fe2897586b5ca0e78997c448899ae1e8a5;p=openwrt%2Fstaging%2Fxback.git realtek: Packet Inspection Engine support for RTL839x SoCs Adds the RTL839x-specific PIE support routines. Signed-off-by: Birger Koblitz --- diff --git a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl839x.c b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl839x.c index c62dc441c1..8faf6c07e9 100644 --- a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl839x.c +++ b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl839x.c @@ -6,6 +6,104 @@ extern struct mutex smi_lock; extern struct rtl83xx_soc_info soc_info; +/* Definition of the RTL839X-specific template field IDs as used in the PIE */ +enum template_field_id { + TEMPLATE_FIELD_SPMMASK = 0, + TEMPLATE_FIELD_SPM0 = 1, // Source portmask ports 0-15 + TEMPLATE_FIELD_SPM1 = 2, // Source portmask ports 16-31 + TEMPLATE_FIELD_SPM2 = 3, // Source portmask ports 32-47 + TEMPLATE_FIELD_SPM3 = 4, // Source portmask ports 48-56 + TEMPLATE_FIELD_DMAC0 = 5, // Destination MAC [15:0] + TEMPLATE_FIELD_DMAC1 = 6, // Destination MAC [31:16] + TEMPLATE_FIELD_DMAC2 = 7, // Destination MAC [47:32] + TEMPLATE_FIELD_SMAC0 = 8, // Source MAC [15:0] + TEMPLATE_FIELD_SMAC1 = 9, // Source MAC [31:16] + TEMPLATE_FIELD_SMAC2 = 10, // Source MAC [47:32] + TEMPLATE_FIELD_ETHERTYPE = 11, // Ethernet frame type field + // Field-ID 12 is not used + TEMPLATE_FIELD_OTAG = 13, + TEMPLATE_FIELD_ITAG = 14, + TEMPLATE_FIELD_SIP0 = 15, + TEMPLATE_FIELD_SIP1 = 16, + TEMPLATE_FIELD_DIP0 = 17, + TEMPLATE_FIELD_DIP1 = 18, + TEMPLATE_FIELD_IP_TOS_PROTO = 19, + TEMPLATE_FIELD_IP_FLAG = 20, + TEMPLATE_FIELD_L4_SPORT = 21, + TEMPLATE_FIELD_L4_DPORT = 22, + TEMPLATE_FIELD_L34_HEADER = 23, + TEMPLATE_FIELD_ICMP_IGMP = 24, + TEMPLATE_FIELD_VID_RANG0 = 25, + TEMPLATE_FIELD_VID_RANG1 = 26, + TEMPLATE_FIELD_L4_PORT_RANG = 27, + TEMPLATE_FIELD_FIELD_SELECTOR_VALID = 28, + TEMPLATE_FIELD_FIELD_SELECTOR_0 = 29, + TEMPLATE_FIELD_FIELD_SELECTOR_1 = 30, + TEMPLATE_FIELD_FIELD_SELECTOR_2 = 31, + TEMPLATE_FIELD_FIELD_SELECTOR_3 = 32, + TEMPLATE_FIELD_FIELD_SELECTOR_4 = 33, + TEMPLATE_FIELD_FIELD_SELECTOR_5 = 34, + TEMPLATE_FIELD_SIP2 = 35, + TEMPLATE_FIELD_SIP3 = 36, + TEMPLATE_FIELD_SIP4 = 37, + TEMPLATE_FIELD_SIP5 = 38, + TEMPLATE_FIELD_SIP6 = 39, + TEMPLATE_FIELD_SIP7 = 40, + TEMPLATE_FIELD_OLABEL = 41, + TEMPLATE_FIELD_ILABEL = 42, + TEMPLATE_FIELD_OILABEL = 43, + TEMPLATE_FIELD_DPMMASK = 44, + TEMPLATE_FIELD_DPM0 = 45, + TEMPLATE_FIELD_DPM1 = 46, + TEMPLATE_FIELD_DPM2 = 47, + TEMPLATE_FIELD_DPM3 = 48, + TEMPLATE_FIELD_L2DPM0 = 49, + TEMPLATE_FIELD_L2DPM1 = 50, + TEMPLATE_FIELD_L2DPM2 = 51, + TEMPLATE_FIELD_L2DPM3 = 52, + TEMPLATE_FIELD_IVLAN = 53, + TEMPLATE_FIELD_OVLAN = 54, + TEMPLATE_FIELD_FWD_VID = 55, + TEMPLATE_FIELD_DIP2 = 56, + TEMPLATE_FIELD_DIP3 = 57, + TEMPLATE_FIELD_DIP4 = 58, + TEMPLATE_FIELD_DIP5 = 59, + TEMPLATE_FIELD_DIP6 = 60, + TEMPLATE_FIELD_DIP7 = 61, +}; + +// Number of fixed templates predefined in the SoC +#define N_FIXED_TEMPLATES 5 +static enum template_field_id fixed_templates[N_FIXED_TEMPLATES][N_FIXED_FIELDS] = +{ + { + TEMPLATE_FIELD_SPM0, TEMPLATE_FIELD_SPM1, TEMPLATE_FIELD_ITAG, + TEMPLATE_FIELD_SMAC0, TEMPLATE_FIELD_SMAC1, TEMPLATE_FIELD_SMAC2, + TEMPLATE_FIELD_DMAC0, TEMPLATE_FIELD_DMAC1, TEMPLATE_FIELD_DMAC2, + TEMPLATE_FIELD_ETHERTYPE, TEMPLATE_FIELD_SPM2, TEMPLATE_FIELD_SPM3 + }, { + TEMPLATE_FIELD_SIP0, TEMPLATE_FIELD_SIP1, TEMPLATE_FIELD_DIP0, + TEMPLATE_FIELD_DIP1,TEMPLATE_FIELD_IP_TOS_PROTO, TEMPLATE_FIELD_L4_SPORT, + TEMPLATE_FIELD_L4_DPORT, TEMPLATE_FIELD_ICMP_IGMP, TEMPLATE_FIELD_SPM0, + TEMPLATE_FIELD_SPM1, TEMPLATE_FIELD_SPM2, TEMPLATE_FIELD_SPM3 + }, { + TEMPLATE_FIELD_DMAC0, TEMPLATE_FIELD_DMAC1, TEMPLATE_FIELD_DMAC2, + TEMPLATE_FIELD_ITAG, TEMPLATE_FIELD_ETHERTYPE, TEMPLATE_FIELD_IP_TOS_PROTO, + TEMPLATE_FIELD_L4_DPORT, TEMPLATE_FIELD_L4_SPORT, TEMPLATE_FIELD_SIP0, + TEMPLATE_FIELD_SIP1, TEMPLATE_FIELD_DIP0, TEMPLATE_FIELD_DIP1 + }, { + TEMPLATE_FIELD_DIP0, TEMPLATE_FIELD_DIP1, TEMPLATE_FIELD_DIP2, + TEMPLATE_FIELD_DIP3, TEMPLATE_FIELD_DIP4, TEMPLATE_FIELD_DIP5, + TEMPLATE_FIELD_DIP6, TEMPLATE_FIELD_DIP7, TEMPLATE_FIELD_L4_DPORT, + TEMPLATE_FIELD_L4_SPORT, TEMPLATE_FIELD_ICMP_IGMP, TEMPLATE_FIELD_IP_TOS_PROTO + }, { + TEMPLATE_FIELD_SIP0, TEMPLATE_FIELD_SIP1, TEMPLATE_FIELD_SIP2, + TEMPLATE_FIELD_SIP3, TEMPLATE_FIELD_SIP4, TEMPLATE_FIELD_SIP5, + TEMPLATE_FIELD_SIP6, TEMPLATE_FIELD_SIP7, TEMPLATE_FIELD_SPM0, + TEMPLATE_FIELD_SPM1, TEMPLATE_FIELD_SPM2, TEMPLATE_FIELD_SPM3 + }, +}; + void rtl839x_print_matrix(void) { volatile u64 *ptr9; @@ -739,6 +837,776 @@ static void rtl839x_init_eee(struct rtl838x_switch_priv *priv, bool enable) priv->eee_enabled = enable; } +static void rtl839x_pie_lookup_enable(struct rtl838x_switch_priv *priv, int index) +{ + int block = index / PIE_BLOCK_SIZE; + + sw_w32_mask(0, BIT(block), RTL839X_ACL_BLK_LOOKUP_CTRL); +} + +/* + * Delete a range of Packet Inspection Engine rules + */ +static int rtl839x_pie_rule_del(struct rtl838x_switch_priv *priv, int index_from, int index_to) +{ + u32 v = (index_from << 1)| (index_to << 13 ) | BIT(0); + + pr_debug("%s: from %d to %d\n", __func__, index_from, index_to); + mutex_lock(&priv->reg_mutex); + + // Write from-to and execute bit into control register + sw_w32(v, RTL839X_ACL_CLR_CTRL); + + // Wait until command has completed + do { + } while (sw_r32(RTL839X_ACL_CLR_CTRL) & BIT(0)); + + mutex_unlock(&priv->reg_mutex); + return 0; +} + +/* + * Reads the intermediate representation of the templated match-fields of the + * PIE rule in the pie_rule structure and fills in the raw data fields in the + * raw register space r[]. + * The register space configuration size is identical for the RTL8380/90 and RTL9300, + * however the RTL9310 has 2 more registers / fields and the physical field-ids are different + * on all SoCs + * On the RTL8390 the template mask registers are not word-aligned! + */ +static void rtl839x_write_pie_templated(u32 r[], struct pie_rule *pr, enum template_field_id t[]) +{ + int i; + enum template_field_id field_type; + u16 data, data_m; + + for (i = 0; i < N_FIXED_FIELDS; i++) { + field_type = t[i]; + data = data_m = 0; + + switch (field_type) { + case TEMPLATE_FIELD_SPM0: + data = pr->spm; + data_m = pr->spm_m; + break; + case TEMPLATE_FIELD_SPM1: + data = pr->spm >> 16; + data_m = pr->spm_m >> 16; + break; + case TEMPLATE_FIELD_SPM2: + data = pr->spm >> 32; + data_m = pr->spm_m >> 32; + break; + case TEMPLATE_FIELD_SPM3: + data = pr->spm >> 48; + data_m = pr->spm_m >> 48; + break; + case TEMPLATE_FIELD_OTAG: + data = pr->otag; + data_m = pr->otag_m; + break; + case TEMPLATE_FIELD_SMAC0: + data = pr->smac[4]; + data = (data << 8) | pr->smac[5]; + data_m = pr->smac_m[4]; + data_m = (data_m << 8) | pr->smac_m[5]; + break; + case TEMPLATE_FIELD_SMAC1: + data = pr->smac[2]; + data = (data << 8) | pr->smac[3]; + data_m = pr->smac_m[2]; + data_m = (data_m << 8) | pr->smac_m[3]; + break; + case TEMPLATE_FIELD_SMAC2: + data = pr->smac[0]; + data = (data << 8) | pr->smac[1]; + data_m = pr->smac_m[0]; + data_m = (data_m << 8) | pr->smac_m[1]; + break; + case TEMPLATE_FIELD_DMAC0: + data = pr->dmac[4]; + data = (data << 8) | pr->dmac[5]; + data_m = pr->dmac_m[4]; + data_m = (data_m << 8) | pr->dmac_m[5]; + break; + case TEMPLATE_FIELD_DMAC1: + data = pr->dmac[2]; + data = (data << 8) | pr->dmac[3]; + data_m = pr->dmac_m[2]; + data_m = (data_m << 8) | pr->dmac_m[3]; + break; + case TEMPLATE_FIELD_DMAC2: + data = pr->dmac[0]; + data = (data << 8) | pr->dmac[1]; + data_m = pr->dmac_m[0]; + data_m = (data_m << 8) | pr->dmac_m[1]; + break; + case TEMPLATE_FIELD_ETHERTYPE: + data = pr->ethertype; + data_m = pr->ethertype_m; + break; + case TEMPLATE_FIELD_ITAG: + data = pr->itag; + data_m = pr->itag_m; + break; + case TEMPLATE_FIELD_SIP0: + if (pr->is_ipv6) { + data = pr->sip6.s6_addr16[7]; + data_m = pr->sip6_m.s6_addr16[7]; + } else { + data = pr->sip; + data_m = pr->sip_m; + } + break; + case TEMPLATE_FIELD_SIP1: + if (pr->is_ipv6) { + data = pr->sip6.s6_addr16[6]; + data_m = pr->sip6_m.s6_addr16[6]; + } else { + data = pr->sip >> 16; + data_m = pr->sip_m >> 16; + } + break; + + case TEMPLATE_FIELD_SIP2: + case TEMPLATE_FIELD_SIP3: + case TEMPLATE_FIELD_SIP4: + case TEMPLATE_FIELD_SIP5: + case TEMPLATE_FIELD_SIP6: + case TEMPLATE_FIELD_SIP7: + data = pr->sip6.s6_addr16[5 - (field_type - TEMPLATE_FIELD_SIP2)]; + data_m = pr->sip6_m.s6_addr16[5 - (field_type - TEMPLATE_FIELD_SIP2)]; + break; + + case TEMPLATE_FIELD_DIP0: + if (pr->is_ipv6) { + data = pr->dip6.s6_addr16[7]; + data_m = pr->dip6_m.s6_addr16[7]; + } else { + data = pr->dip; + data_m = pr->dip_m; + } + break; + + case TEMPLATE_FIELD_DIP1: + if (pr->is_ipv6) { + data = pr->dip6.s6_addr16[6]; + data_m = pr->dip6_m.s6_addr16[6]; + } else { + data = pr->dip >> 16; + data_m = pr->dip_m >> 16; + } + break; + + case TEMPLATE_FIELD_DIP2: + case TEMPLATE_FIELD_DIP3: + case TEMPLATE_FIELD_DIP4: + case TEMPLATE_FIELD_DIP5: + case TEMPLATE_FIELD_DIP6: + case TEMPLATE_FIELD_DIP7: + data = pr->dip6.s6_addr16[5 - (field_type - TEMPLATE_FIELD_DIP2)]; + data_m = pr->dip6_m.s6_addr16[5 - (field_type - TEMPLATE_FIELD_DIP2)]; + break; + + case TEMPLATE_FIELD_IP_TOS_PROTO: + data = pr->tos_proto; + data_m = pr->tos_proto_m; + break; + case TEMPLATE_FIELD_L4_SPORT: + data = pr->sport; + data_m = pr->sport_m; + break; + case TEMPLATE_FIELD_L4_DPORT: + data = pr->dport; + data_m = pr->dport_m; + break; + case TEMPLATE_FIELD_ICMP_IGMP: + data = pr->icmp_igmp; + data_m = pr->icmp_igmp_m; + break; + default: + pr_info("%s: unknown field %d\n", __func__, field_type); + } + + // On the RTL8390, the mask fields are not word aligned! + if (!(i % 2)) { + r[5 - i / 2] = data; + r[12 - i / 2] |= ((u32)data_m << 8); + } else { + r[5 - i / 2] |= ((u32)data) << 16; + r[12 - i / 2] |= ((u32)data_m) << 24; + r[11 - i / 2] |= ((u32)data_m) >> 8; + } + } +} + +/* + * Creates the intermediate representation of the templated match-fields of the + * PIE rule in the pie_rule structure by reading the raw data fields in the + * raw register space r[]. + * The register space configuration size is identical for the RTL8380/90 and RTL9300, + * however the RTL9310 has 2 more registers / fields and the physical field-ids + * On the RTL8390 the template mask registers are not word-aligned! + */ +void rtl839x_read_pie_templated(u32 r[], struct pie_rule *pr, enum template_field_id t[]) +{ + int i; + enum template_field_id field_type; + u16 data, data_m; + + for (i = 0; i < N_FIXED_FIELDS; i++) { + field_type = t[i]; + if (!(i % 2)) { + data = r[5 - i / 2]; + data_m = r[12 - i / 2]; + } else { + data = r[5 - i / 2] >> 16; + data_m = r[12 - i / 2] >> 16; + } + + switch (field_type) { + case TEMPLATE_FIELD_SPM0: + pr->spm = (pr->spn << 16) | data; + pr->spm_m = (pr->spn << 16) | data_m; + break; + case TEMPLATE_FIELD_SPM1: + pr->spm = data; + pr->spm_m = data_m; + break; + case TEMPLATE_FIELD_OTAG: + pr->otag = data; + pr->otag_m = data_m; + break; + case TEMPLATE_FIELD_SMAC0: + pr->smac[4] = data >> 8; + pr->smac[5] = data; + pr->smac_m[4] = data >> 8; + pr->smac_m[5] = data; + break; + case TEMPLATE_FIELD_SMAC1: + pr->smac[2] = data >> 8; + pr->smac[3] = data; + pr->smac_m[2] = data >> 8; + pr->smac_m[3] = data; + break; + case TEMPLATE_FIELD_SMAC2: + pr->smac[0] = data >> 8; + pr->smac[1] = data; + pr->smac_m[0] = data >> 8; + pr->smac_m[1] = data; + break; + case TEMPLATE_FIELD_DMAC0: + pr->dmac[4] = data >> 8; + pr->dmac[5] = data; + pr->dmac_m[4] = data >> 8; + pr->dmac_m[5] = data; + break; + case TEMPLATE_FIELD_DMAC1: + pr->dmac[2] = data >> 8; + pr->dmac[3] = data; + pr->dmac_m[2] = data >> 8; + pr->dmac_m[3] = data; + break; + case TEMPLATE_FIELD_DMAC2: + pr->dmac[0] = data >> 8; + pr->dmac[1] = data; + pr->dmac_m[0] = data >> 8; + pr->dmac_m[1] = data; + break; + case TEMPLATE_FIELD_ETHERTYPE: + pr->ethertype = data; + pr->ethertype_m = data_m; + break; + case TEMPLATE_FIELD_ITAG: + pr->itag = data; + pr->itag_m = data_m; + break; + case TEMPLATE_FIELD_SIP0: + pr->sip = data; + pr->sip_m = data_m; + break; + case TEMPLATE_FIELD_SIP1: + pr->sip = (pr->sip << 16) | data; + pr->sip_m = (pr->sip << 16) | data_m; + break; + case TEMPLATE_FIELD_SIP2: + pr->is_ipv6 = true; + // Make use of limitiations on the position of the match values + ipv6_addr_set(&pr->sip6, pr->sip, r[5 - i / 2], + r[4 - i / 2], r[3 - i / 2]); + ipv6_addr_set(&pr->sip6_m, pr->sip_m, r[5 - i / 2], + r[4 - i / 2], r[3 - i / 2]); + case TEMPLATE_FIELD_SIP3: + case TEMPLATE_FIELD_SIP4: + case TEMPLATE_FIELD_SIP5: + case TEMPLATE_FIELD_SIP6: + case TEMPLATE_FIELD_SIP7: + break; + + case TEMPLATE_FIELD_DIP0: + pr->dip = data; + pr->dip_m = data_m; + break; + + case TEMPLATE_FIELD_DIP1: + pr->dip = (pr->dip << 16) | data; + pr->dip_m = (pr->dip << 16) | data_m; + break; + + case TEMPLATE_FIELD_DIP2: + pr->is_ipv6 = true; + ipv6_addr_set(&pr->dip6, pr->dip, r[5 - i / 2], + r[4 - i / 2], r[3 - i / 2]); + ipv6_addr_set(&pr->dip6_m, pr->dip_m, r[5 - i / 2], + r[4 - i / 2], r[3 - i / 2]); + case TEMPLATE_FIELD_DIP3: + case TEMPLATE_FIELD_DIP4: + case TEMPLATE_FIELD_DIP5: + case TEMPLATE_FIELD_DIP6: + case TEMPLATE_FIELD_DIP7: + break; + case TEMPLATE_FIELD_IP_TOS_PROTO: + pr->tos_proto = data; + pr->tos_proto_m = data_m; + break; + case TEMPLATE_FIELD_L4_SPORT: + pr->sport = data; + pr->sport_m = data_m; + break; + case TEMPLATE_FIELD_L4_DPORT: + pr->dport = data; + pr->dport_m = data_m; + break; + case TEMPLATE_FIELD_ICMP_IGMP: + pr->icmp_igmp = data; + pr->icmp_igmp_m = data_m; + break; + default: + pr_info("%s: unknown field %d\n", __func__, field_type); + } + } +} + +static void rtl839x_read_pie_fixed_fields(u32 r[], struct pie_rule *pr) +{ + pr->spmmask_fix = (r[6] >> 30) & 0x3; + pr->spn = (r[6] >> 24) & 0x3f; + pr->mgnt_vlan = (r[6] >> 23) & 1; + pr->dmac_hit_sw = (r[6] >> 22) & 1; + pr->not_first_frag = (r[6] >> 21) & 1; + pr->frame_type_l4 = (r[6] >> 18) & 7; + pr->frame_type = (r[6] >> 16) & 3; + pr->otag_fmt = (r[6] >> 15) & 1; + pr->itag_fmt = (r[6] >> 14) & 1; + pr->otag_exist = (r[6] >> 13) & 1; + pr->itag_exist = (r[6] >> 12) & 1; + pr->frame_type_l2 = (r[6] >> 10) & 3; + pr->tid = (r[6] >> 8) & 3; + + pr->spmmask_fix_m = (r[12] >> 6) & 0x3; + pr->spn_m = r[12] & 0x3f; + pr->mgnt_vlan_m = (r[13] >> 31) & 1; + pr->dmac_hit_sw_m = (r[13] >> 30) & 1; + pr->not_first_frag_m = (r[13] >> 29) & 1; + pr->frame_type_l4_m = (r[13] >> 26) & 7; + pr->frame_type_m = (r[13] >> 24) & 3; + pr->otag_fmt_m = (r[13] >> 23) & 1; + pr->itag_fmt_m = (r[13] >> 22) & 1; + pr->otag_exist_m = (r[13] >> 21) & 1; + pr->itag_exist_m = (r[13] >> 20) & 1; + pr->frame_type_l2_m = (r[13] >> 18) & 3; + pr->tid_m = (r[13] >> 16) & 3; + + pr->valid = r[13] & BIT(15); + pr->cond_not = r[13] & BIT(14); + pr->cond_and1 = r[13] & BIT(13); + pr->cond_and2 = r[13] & BIT(12); +} + +static void rtl839x_write_pie_fixed_fields(u32 r[], struct pie_rule *pr) +{ + r[6] = ((u32) (pr->spmmask_fix & 0x3)) << 30; + r[6] |= ((u32) (pr->spn & 0x3f)) << 24; + r[6] |= pr->mgnt_vlan ? BIT(23) : 0; + r[6] |= pr->dmac_hit_sw ? BIT(22) : 0; + r[6] |= pr->not_first_frag ? BIT(21) : 0; + r[6] |= ((u32) (pr->frame_type_l4 & 0x7)) << 18; + r[6] |= ((u32) (pr->frame_type & 0x3)) << 16; + r[6] |= pr->otag_fmt ? BIT(15) : 0; + r[6] |= pr->itag_fmt ? BIT(14) : 0; + r[6] |= pr->otag_exist ? BIT(13) : 0; + r[6] |= pr->itag_exist ? BIT(12) : 0; + r[6] |= ((u32) (pr->frame_type_l2 & 0x3)) << 10; + r[6] |= ((u32) (pr->tid & 0x3)) << 8; + + r[12] |= ((u32) (pr->spmmask_fix_m & 0x3)) << 6; + r[12] |= (u32) (pr->spn_m & 0x3f); + r[13] |= pr->mgnt_vlan_m ? BIT(31) : 0; + r[13] |= pr->dmac_hit_sw_m ? BIT(30) : 0; + r[13] |= pr->not_first_frag_m ? BIT(29) : 0; + r[13] |= ((u32) (pr->frame_type_l4_m & 0x7)) << 26; + r[13] |= ((u32) (pr->frame_type_m & 0x3)) << 24; + r[13] |= pr->otag_fmt_m ? BIT(23) : 0; + r[13] |= pr->itag_fmt_m ? BIT(22) : 0; + r[13] |= pr->otag_exist_m ? BIT(21) : 0; + r[13] |= pr->itag_exist_m ? BIT(20) : 0; + r[13] |= ((u32) (pr->frame_type_l2_m & 0x3)) << 18; + r[13] |= ((u32) (pr->tid_m & 0x3)) << 16; + + r[13] |= pr->valid ? BIT(15) : 0; + r[13] |= pr->cond_not ? BIT(14) : 0; + r[13] |= pr->cond_and1 ? BIT(13) : 0; + r[13] |= pr->cond_and2 ? BIT(12) : 0; +} + +static void rtl839x_write_pie_action(u32 r[], struct pie_rule *pr) +{ + if (pr->drop) { + r[13] |= 0x9; // Set ACT_MASK_FWD & FWD_ACT = DROP + r[13] |= BIT(3); + } else { + r[13] |= pr->fwd_sel ? BIT(3) : 0; + r[13] |= pr->fwd_act; + } + r[13] |= pr->bypass_sel ? BIT(11) : 0; + r[13] |= pr->mpls_sel ? BIT(10) : 0; + r[13] |= pr->nopri_sel ? BIT(9) : 0; + r[13] |= pr->ovid_sel ? BIT(8) : 0; + r[13] |= pr->ivid_sel ? BIT(7) : 0; + r[13] |= pr->meter_sel ? BIT(6) : 0; + r[13] |= pr->mir_sel ? BIT(5) : 0; + r[13] |= pr->log_sel ? BIT(4) : 0; + + r[14] |= ((u32)(pr->fwd_data & 0x3fff)) << 18; + r[14] |= pr->log_octets ? BIT(17) : 0; + r[14] |= ((u32)(pr->log_data & 0x7ff)) << 4; + r[14] |= (pr->mir_data & 0x3) << 3; + r[14] |= ((u32)(pr->meter_data >> 7)) & 0x7; + r[15] |= (u32)(pr->meter_data) << 26; + r[15] |= ((u32)(pr->ivid_act) << 23) & 0x3; + r[15] |= ((u32)(pr->ivid_data) << 9) & 0xfff; + r[15] |= ((u32)(pr->ovid_act) << 6) & 0x3; + r[15] |= ((u32)(pr->ovid_data) >> 4) & 0xff; + r[16] |= ((u32)(pr->ovid_data) & 0xf) << 28; + r[16] |= ((u32)(pr->nopri_data) & 0x7) << 20; + r[16] |= ((u32)(pr->mpls_act) & 0x7) << 20; + r[16] |= ((u32)(pr->mpls_lib_idx) & 0x7) << 20; + r[16] |= pr->bypass_all ? BIT(9) : 0; + r[16] |= pr->bypass_igr_stp ? BIT(8) : 0; + r[16] |= pr->bypass_ibc_sc ? BIT(7) : 0; +} + +static void rtl839x_read_pie_action(u32 r[], struct pie_rule *pr) +{ + if (r[13] & BIT(3)) { // ACT_MASK_FWD set, is it a drop? + if ((r[14] & 0x7) == 1) { + pr->drop = true; + } else { + pr->fwd_sel = true; + pr->fwd_act = r[14] & 0x7; + } + } + + pr->bypass_sel = r[13] & BIT(11); + pr->mpls_sel = r[13] & BIT(10); + pr->nopri_sel = r[13] & BIT(9); + pr->ovid_sel = r[13] & BIT(8); + pr->ivid_sel = r[13] & BIT(7); + pr->meter_sel = r[13] & BIT(6); + pr->mir_sel = r[13] & BIT(5); + pr->log_sel = r[13] & BIT(4); + + // TODO: Read in data fields + + pr->bypass_all = r[16] & BIT(9); + pr->bypass_igr_stp = r[16] & BIT(8); + pr->bypass_ibc_sc = r[16] & BIT(7); +} + +void rtl839x_pie_rule_dump_raw(u32 r[]) +{ + pr_info("Raw IACL table entry:\n"); + pr_info("Match : %08x %08x %08x %08x %08x %08x\n", r[0], r[1], r[2], r[3], r[4], r[5]); + pr_info("Fixed : %06x\n", r[6] >> 8); + pr_info("Match M: %08x %08x %08x %08x %08x %08x\n", + (r[6] << 24) | (r[7] >> 8), (r[7] << 24) | (r[8] >> 8), (r[8] << 24) | (r[9] >> 8), + (r[9] << 24) | (r[10] >> 8), (r[10] << 24) | (r[11] >> 8), + (r[11] << 24) | (r[12] >> 8)); + pr_info("R[13]: %08x\n", r[13]); + pr_info("Fixed M: %06x\n", ((r[12] << 16) | (r[13] >> 16)) & 0xffffff); + pr_info("Valid / not / and1 / and2 : %1x\n", (r[13] >> 12) & 0xf); + pr_info("r 13-16: %08x %08x %08x %08x\n", r[13], r[14], r[15], r[16]); +} + +void rtl839x_pie_rule_dump(struct pie_rule *pr) +{ + pr_info("Drop: %d, fwd: %d, ovid: %d, ivid: %d, flt: %d, log: %d, rmk: %d, meter: %d tagst: %d, mir: %d, nopri: %d, cpupri: %d, otpid: %d, itpid: %d, shape: %d\n", + pr->drop, pr->fwd_sel, pr->ovid_sel, pr->ivid_sel, pr->flt_sel, pr->log_sel, pr->rmk_sel, pr->log_sel, pr->tagst_sel, pr->mir_sel, pr->nopri_sel, + pr->cpupri_sel, pr->otpid_sel, pr->itpid_sel, pr->shaper_sel); + if (pr->fwd_sel) + pr_info("FWD: %08x\n", pr->fwd_data); + pr_info("TID: %x, %x\n", pr->tid, pr->tid_m); +} + +static int rtl839x_pie_rule_read(struct rtl838x_switch_priv *priv, int idx, struct pie_rule *pr) +{ + // Read IACL table (2) via register 0 + struct table_reg *q = rtl_table_get(RTL8380_TBL_0, 2); + u32 r[17]; + int i; + int block = idx / PIE_BLOCK_SIZE; + u32 t_select = sw_r32(RTL839X_ACL_BLK_TMPLTE_CTRL(block)); + + memset(pr, 0, sizeof(*pr)); + rtl_table_read(q, idx); + for (i = 0; i < 17; i++) + r[i] = sw_r32(rtl_table_data(q, i)); + + rtl_table_release(q); + + rtl839x_read_pie_fixed_fields(r, pr); + if (!pr->valid) + return 0; + + pr_debug("%s: template_selectors %08x, tid: %d\n", __func__, t_select, pr->tid); + rtl839x_pie_rule_dump_raw(r); + + rtl839x_read_pie_templated(r, pr, fixed_templates[(t_select >> (pr->tid * 3)) & 0x7]); + + rtl839x_read_pie_action(r, pr); + + return 0; +} + +static int rtl839x_pie_rule_write(struct rtl838x_switch_priv *priv, int idx, struct pie_rule *pr) +{ + // Access IACL table (2) via register 0 + struct table_reg *q = rtl_table_get(RTL8390_TBL_0, 2); + u32 r[17]; + int i; + int block = idx / PIE_BLOCK_SIZE; + u32 t_select = sw_r32(RTL839X_ACL_BLK_TMPLTE_CTRL(block)); + + pr_debug("%s: %d, t_select: %08x\n", __func__, idx, t_select); + + for (i = 0; i < 17; i++) + r[i] = 0; + + if (!pr->valid) { + rtl_table_write(q, idx); + rtl_table_release(q); + return 0; + } + rtl839x_write_pie_fixed_fields(r, pr); + + pr_debug("%s: template %d\n", __func__, (t_select >> (pr->tid * 3)) & 0x7); + rtl839x_write_pie_templated(r, pr, fixed_templates[(t_select >> (pr->tid * 3)) & 0x7]); + + rtl839x_write_pie_action(r, pr); + +// rtl839x_pie_rule_dump_raw(r); + + for (i = 0; i < 17; i++) + sw_w32(r[i], rtl_table_data(q, i)); + + rtl_table_write(q, idx); + rtl_table_release(q); + + return 0; +} + +static bool rtl839x_pie_templ_has(int t, enum template_field_id field_type) +{ + int i; + enum template_field_id ft; + + for (i = 0; i < N_FIXED_FIELDS; i++) { + ft = fixed_templates[t][i]; + if (field_type == ft) + return true; + } + + return false; +} + +static int rtl839x_pie_verify_template(struct rtl838x_switch_priv *priv, + struct pie_rule *pr, int t, int block) +{ + int i; + + if (!pr->is_ipv6 && pr->sip_m && !rtl839x_pie_templ_has(t, TEMPLATE_FIELD_SIP0)) + return -1; + + if (!pr->is_ipv6 && pr->dip_m && !rtl839x_pie_templ_has(t, TEMPLATE_FIELD_DIP0)) + return -1; + + if (pr->is_ipv6) { + if ((pr->sip6_m.s6_addr32[0] || pr->sip6_m.s6_addr32[1] + || pr->sip6_m.s6_addr32[2] || pr->sip6_m.s6_addr32[3]) + && !rtl839x_pie_templ_has(t, TEMPLATE_FIELD_SIP2)) + return -1; + if ((pr->dip6_m.s6_addr32[0] || pr->dip6_m.s6_addr32[1] + || pr->dip6_m.s6_addr32[2] || pr->dip6_m.s6_addr32[3]) + && !rtl839x_pie_templ_has(t, TEMPLATE_FIELD_DIP2)) + return -1; + } + + if (ether_addr_to_u64(pr->smac) && !rtl839x_pie_templ_has(t, TEMPLATE_FIELD_SMAC0)) + return -1; + + if (ether_addr_to_u64(pr->dmac) && !rtl839x_pie_templ_has(t, TEMPLATE_FIELD_DMAC0)) + return -1; + + // TODO: Check more + + i = find_first_zero_bit(&priv->pie_use_bm[block * 4], PIE_BLOCK_SIZE); + + if (i >= PIE_BLOCK_SIZE) + return -1; + + return i + PIE_BLOCK_SIZE * block; +} + +static int rtl839x_pie_rule_add(struct rtl838x_switch_priv *priv, struct pie_rule *pr) +{ + int idx, block, j, t; + int min_block = 0; + int max_block = priv->n_pie_blocks / 2; + + if (pr->is_egress) { + min_block = max_block; + max_block = priv->n_pie_blocks; + } + + mutex_lock(&priv->pie_mutex); + + for (block = min_block; block < max_block; block++) { + for (j = 0; j < 2; j++) { + t = (sw_r32(RTL839X_ACL_BLK_TMPLTE_CTRL(block)) >> (j * 3)) & 0x7; + idx = rtl839x_pie_verify_template(priv, pr, t, block); + if (idx >= 0) + break; + } + if (j < 2) + break; + } + + if (block >= priv->n_pie_blocks) { + mutex_unlock(&priv->pie_mutex); + return -EOPNOTSUPP; + } + + set_bit(idx, priv->pie_use_bm); + + pr->valid = true; + pr->tid = j; // Mapped to template number + pr->tid_m = 0x3; + pr->id = idx; + + rtl839x_pie_lookup_enable(priv, idx); + rtl839x_pie_rule_write(priv, idx, pr); + + mutex_unlock(&priv->pie_mutex); + return 0; +} + +static void rtl839x_pie_rule_rm(struct rtl838x_switch_priv *priv, struct pie_rule *pr) +{ + int idx = pr->id; + + rtl839x_pie_rule_del(priv, idx, idx); + clear_bit(idx, priv->pie_use_bm); +} + +static void rtl839x_pie_init(struct rtl838x_switch_priv *priv) +{ + int i; + u32 template_selectors; + + mutex_init(&priv->pie_mutex); + + // Power on all PIE blocks + for (i = 0; i < priv->n_pie_blocks; i++) + sw_w32_mask(0, BIT(i), RTL839X_PS_ACL_PWR_CTRL); + + // Set ingress and egress ACL blocks to 50/50: first Egress block is 9 + sw_w32_mask(0x1f, 9, RTL839X_ACL_CTRL); // Writes 9 to cutline field + + // Include IPG in metering + sw_w32(1, RTL839X_METER_GLB_CTRL); + + // Delete all present rules + rtl839x_pie_rule_del(priv, 0, priv->n_pie_blocks * PIE_BLOCK_SIZE - 1); + + // Enable predefined templates 0, 1 for blocks 0-2 + template_selectors = 0 | (1 << 3); + for (i = 0; i < 3; i++) + sw_w32(template_selectors, RTL839X_ACL_BLK_TMPLTE_CTRL(i)); + + // Enable predefined templates 2, 3 for blocks 3-5 + template_selectors = 2 | (3 << 3); + for (i = 3; i < 6; i++) + sw_w32(template_selectors, RTL839X_ACL_BLK_TMPLTE_CTRL(i)); + + // Enable predefined templates 1, 4 for blocks 6-8 + template_selectors = 2 | (3 << 3); + for (i = 6; i < 9; i++) + sw_w32(template_selectors, RTL839X_ACL_BLK_TMPLTE_CTRL(i)); + + // Enable predefined templates 0, 1 for blocks 9-11 + template_selectors = 0 | (1 << 3); + for (i = 9; i < 12; i++) + sw_w32(template_selectors, RTL839X_ACL_BLK_TMPLTE_CTRL(i)); + + // Enable predefined templates 2, 3 for blocks 12-14 + template_selectors = 2 | (3 << 3); + for (i = 12; i < 15; i++) + sw_w32(template_selectors, RTL839X_ACL_BLK_TMPLTE_CTRL(i)); + + // Enable predefined templates 1, 4 for blocks 15-17 + template_selectors = 2 | (3 << 3); + for (i = 15; i < 18; i++) + sw_w32(template_selectors, RTL839X_ACL_BLK_TMPLTE_CTRL(i)); +} + +static u32 rtl839x_packet_cntr_read(int counter) +{ + u32 v; + + // Read LOG table (4) via register RTL8390_TBL_0 + struct table_reg *r = rtl_table_get(RTL8390_TBL_0, 4); + + pr_debug("In %s, id %d\n", __func__, counter); + rtl_table_read(r, counter / 2); + + // The table has a size of 2 registers + if (counter % 2) + v = sw_r32(rtl_table_data(r, 0)); + else + v = sw_r32(rtl_table_data(r, 1)); + + rtl_table_release(r); + + return v; +} + +static void rtl839x_packet_cntr_clear(int counter) +{ + // Access LOG table (4) via register RTL8390_TBL_0 + struct table_reg *r = rtl_table_get(RTL8390_TBL_0, 4); + + pr_debug("In %s, id %d\n", __func__, counter); + // The table has a size of 2 registers + if (counter % 2) + sw_w32(0, rtl_table_data(r, 0)); + else + sw_w32(0, rtl_table_data(r, 1)); + + rtl_table_write(r, counter / 2); + + rtl_table_release(r); +} + const struct rtl838x_reg rtl839x_reg = { .mask_port_reg_be = rtl839x_mask_port_reg_be, .set_port_reg_be = rtl839x_set_port_reg_be, @@ -804,4 +1672,11 @@ const struct rtl838x_reg rtl839x_reg = { .l2_hash_key = rtl839x_l2_hash_key, .read_mcast_pmask = rtl839x_read_mcast_pmask, .write_mcast_pmask = rtl839x_write_mcast_pmask, + .pie_init = rtl839x_pie_init, + .pie_rule_read = rtl839x_pie_rule_read, + .pie_rule_write = rtl839x_pie_rule_write, + .pie_rule_add = rtl839x_pie_rule_add, + .pie_rule_rm = rtl839x_pie_rule_rm, + .packet_cntr_read = rtl839x_packet_cntr_read, + .packet_cntr_clear = rtl839x_packet_cntr_clear, };