diff options
author | Jakub Kicinski <kuba@kernel.org> | 2021-11-25 19:37:37 -0800 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2021-11-25 19:37:37 -0800 |
commit | 342e5f9fc73f7af0fa253c1ec8ea237512b5ebf5 (patch) | |
tree | 48bbcfc81ff8a1a78a8284e1e094719d2306b3fb | |
parent | 8abe19703825eda9c49f54624af57546c23af53f (diff) | |
parent | faa88ecead2f3f1326d6c753af6e700a49872482 (diff) | |
download | linux-342e5f9fc73f7af0fa253c1ec8ea237512b5ebf5.tar.bz2 |
Merge branch 'net-ipa-small-collected-improvements'
Alex Elder says:
====================
net: ipa: small collected improvements
This series contains a somewhat unrelated set of changes, some
inspired by some recent work posted for back-port. For the most
part they're meant to improve the code without changing it's
functionality. Each basically stands on its own.
====================
Link: https://lore.kernel.org/r/20211124202511.862588-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r-- | drivers/net/ipa/gsi.c | 44 | ||||
-rw-r--r-- | drivers/net/ipa/gsi.h | 11 | ||||
-rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 43 | ||||
-rw-r--r-- | drivers/net/ipa/ipa_main.c | 7 | ||||
-rw-r--r-- | drivers/net/ipa/ipa_modem.c | 10 | ||||
-rw-r--r-- | drivers/net/ipa/ipa_modem.h | 3 | ||||
-rw-r--r-- | drivers/net/ipa/ipa_table.c | 48 |
7 files changed, 89 insertions, 77 deletions
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c index a2fcdb1abdb9..b611e39167fe 100644 --- a/drivers/net/ipa/gsi.c +++ b/drivers/net/ipa/gsi.c @@ -339,10 +339,10 @@ static u32 gsi_ring_index(struct gsi_ring *ring, u32 offset) * completion to be signaled. Returns true if the command completes * or false if it times out. */ -static bool -gsi_command(struct gsi *gsi, u32 reg, u32 val, struct completion *completion) +static bool gsi_command(struct gsi *gsi, u32 reg, u32 val) { unsigned long timeout = msecs_to_jiffies(GSI_CMD_TIMEOUT); + struct completion *completion = &gsi->completion; reinit_completion(completion); @@ -366,8 +366,6 @@ gsi_evt_ring_state(struct gsi *gsi, u32 evt_ring_id) static void gsi_evt_ring_command(struct gsi *gsi, u32 evt_ring_id, enum gsi_evt_cmd_opcode opcode) { - struct gsi_evt_ring *evt_ring = &gsi->evt_ring[evt_ring_id]; - struct completion *completion = &evt_ring->completion; struct device *dev = gsi->dev; bool timeout; u32 val; @@ -378,7 +376,7 @@ static void gsi_evt_ring_command(struct gsi *gsi, u32 evt_ring_id, val = u32_encode_bits(evt_ring_id, EV_CHID_FMASK); val |= u32_encode_bits(opcode, EV_OPCODE_FMASK); - timeout = !gsi_command(gsi, GSI_EV_CH_CMD_OFFSET, val, completion); + timeout = !gsi_command(gsi, GSI_EV_CH_CMD_OFFSET, val); gsi_irq_ev_ctrl_disable(gsi); @@ -478,7 +476,6 @@ static enum gsi_channel_state gsi_channel_state(struct gsi_channel *channel) static void gsi_channel_command(struct gsi_channel *channel, enum gsi_ch_cmd_opcode opcode) { - struct completion *completion = &channel->completion; u32 channel_id = gsi_channel_id(channel); struct gsi *gsi = channel->gsi; struct device *dev = gsi->dev; @@ -490,7 +487,7 @@ gsi_channel_command(struct gsi_channel *channel, enum gsi_ch_cmd_opcode opcode) val = u32_encode_bits(channel_id, CH_CHID_FMASK); val |= u32_encode_bits(opcode, CH_OPCODE_FMASK); - timeout = !gsi_command(gsi, GSI_CH_CMD_OFFSET, val, completion); + timeout = !gsi_command(gsi, GSI_CH_CMD_OFFSET, val); gsi_irq_ch_ctrl_disable(gsi); @@ -1074,13 +1071,10 @@ static void gsi_isr_chan_ctrl(struct gsi *gsi) while (channel_mask) { u32 channel_id = __ffs(channel_mask); - struct gsi_channel *channel; channel_mask ^= BIT(channel_id); - channel = &gsi->channel[channel_id]; - - complete(&channel->completion); + complete(&gsi->completion); } } @@ -1094,13 +1088,10 @@ static void gsi_isr_evt_ctrl(struct gsi *gsi) while (event_mask) { u32 evt_ring_id = __ffs(event_mask); - struct gsi_evt_ring *evt_ring; event_mask ^= BIT(evt_ring_id); - evt_ring = &gsi->evt_ring[evt_ring_id]; - - complete(&evt_ring->completion); + complete(&gsi->completion); } } @@ -1110,7 +1101,7 @@ gsi_isr_glob_chan_err(struct gsi *gsi, u32 err_ee, u32 channel_id, u32 code) { if (code == GSI_OUT_OF_RESOURCES) { dev_err(gsi->dev, "channel %u out of resources\n", channel_id); - complete(&gsi->channel[channel_id].completion); + complete(&gsi->completion); return; } @@ -1127,7 +1118,7 @@ gsi_isr_glob_evt_err(struct gsi *gsi, u32 err_ee, u32 evt_ring_id, u32 code) struct gsi_evt_ring *evt_ring = &gsi->evt_ring[evt_ring_id]; u32 channel_id = gsi_channel_id(evt_ring->channel); - complete(&evt_ring->completion); + complete(&gsi->completion); dev_err(gsi->dev, "evt_ring for channel %u out of resources\n", channel_id); return; @@ -1651,7 +1642,6 @@ static void gsi_channel_teardown_one(struct gsi *gsi, u32 channel_id) static int gsi_generic_command(struct gsi *gsi, u32 channel_id, enum gsi_generic_cmd_opcode opcode) { - struct completion *completion = &gsi->completion; bool timeout; u32 val; @@ -1675,7 +1665,7 @@ static int gsi_generic_command(struct gsi *gsi, u32 channel_id, val |= u32_encode_bits(channel_id, GENERIC_CHID_FMASK); val |= u32_encode_bits(GSI_EE_MODEM, GENERIC_EE_FMASK); - timeout = !gsi_command(gsi, GSI_GENERIC_CMD_OFFSET, val, completion); + timeout = !gsi_command(gsi, GSI_GENERIC_CMD_OFFSET, val); /* Disable the GP_INT1 IRQ type again */ iowrite32(BIT(ERROR_INT), gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET); @@ -1975,18 +1965,6 @@ static void gsi_channel_evt_ring_exit(struct gsi_channel *channel) gsi_evt_ring_id_free(gsi, evt_ring_id); } -/* Init function for event rings; there is no gsi_evt_ring_exit() */ -static void gsi_evt_ring_init(struct gsi *gsi) -{ - u32 evt_ring_id = 0; - - gsi->event_bitmap = gsi_event_bitmap_init(GSI_EVT_RING_COUNT_MAX); - gsi->ieob_enabled_bitmap = 0; - do - init_completion(&gsi->evt_ring[evt_ring_id].completion); - while (++evt_ring_id < GSI_EVT_RING_COUNT_MAX); -} - static bool gsi_channel_data_valid(struct gsi *gsi, const struct ipa_gsi_endpoint_data *data) { @@ -2069,7 +2047,6 @@ static int gsi_channel_init_one(struct gsi *gsi, channel->tlv_count = data->channel.tlv_count; channel->tre_count = tre_count; channel->event_count = data->channel.event_count; - init_completion(&channel->completion); ret = gsi_channel_evt_ring_init(channel); if (ret) @@ -2129,7 +2106,8 @@ static int gsi_channel_init(struct gsi *gsi, u32 count, /* IPA v4.2 requires the AP to allocate channels for the modem */ modem_alloc = gsi->version == IPA_VERSION_4_2; - gsi_evt_ring_init(gsi); /* No matching exit required */ + gsi->event_bitmap = gsi_event_bitmap_init(GSI_EVT_RING_COUNT_MAX); + gsi->ieob_enabled_bitmap = 0; /* The endpoint data array is indexed by endpoint name */ for (i = 0; i < count; i++) { diff --git a/drivers/net/ipa/gsi.h b/drivers/net/ipa/gsi.h index 88b80dc3db79..75dfc7655f3b 100644 --- a/drivers/net/ipa/gsi.h +++ b/drivers/net/ipa/gsi.h @@ -114,8 +114,6 @@ struct gsi_channel { u16 tre_count; u16 event_count; - struct completion completion; /* signals channel command completion */ - struct gsi_ring tre_ring; u32 evt_ring_id; @@ -141,28 +139,27 @@ enum gsi_evt_ring_state { struct gsi_evt_ring { struct gsi_channel *channel; - struct completion completion; /* signals event ring state changes */ struct gsi_ring ring; }; struct gsi { struct device *dev; /* Same as IPA device */ enum ipa_version version; - struct net_device dummy_dev; /* needed for NAPI */ void __iomem *virt_raw; /* I/O mapped address range */ void __iomem *virt; /* Adjusted for most registers */ u32 irq; u32 channel_count; u32 evt_ring_count; - struct gsi_channel channel[GSI_CHANNEL_COUNT_MAX]; - struct gsi_evt_ring evt_ring[GSI_EVT_RING_COUNT_MAX]; u32 event_bitmap; /* allocated event rings */ u32 modem_channel_bitmap; /* modem channels to allocate */ u32 type_enabled_bitmap; /* GSI IRQ types enabled */ u32 ieob_enabled_bitmap; /* IEOB IRQ enabled (event rings) */ - struct completion completion; /* for global EE commands */ int result; /* Negative errno (generic commands) */ + struct completion completion; /* Signals GSI command completion */ struct mutex mutex; /* protects commands, programming */ + struct gsi_channel channel[GSI_CHANNEL_COUNT_MAX]; + struct gsi_evt_ring evt_ring[GSI_EVT_RING_COUNT_MAX]; + struct net_device dummy_dev; /* needed for NAPI */ }; /** diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index ef790fd0ab56..fba576a7717f 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -860,7 +860,7 @@ static void ipa_endpoint_init_hol_block_timer(struct ipa_endpoint *endpoint, } static void -ipa_endpoint_init_hol_block_enable(struct ipa_endpoint *endpoint, bool enable) +ipa_endpoint_init_hol_block_en(struct ipa_endpoint *endpoint, bool enable) { u32 endpoint_id = endpoint->endpoint_id; u32 offset; @@ -874,6 +874,19 @@ ipa_endpoint_init_hol_block_enable(struct ipa_endpoint *endpoint, bool enable) iowrite32(val, endpoint->ipa->reg_virt + offset); } +/* Assumes HOL_BLOCK is in disabled state */ +static void ipa_endpoint_init_hol_block_enable(struct ipa_endpoint *endpoint, + u32 microseconds) +{ + ipa_endpoint_init_hol_block_timer(endpoint, microseconds); + ipa_endpoint_init_hol_block_en(endpoint, true); +} + +static void ipa_endpoint_init_hol_block_disable(struct ipa_endpoint *endpoint) +{ + ipa_endpoint_init_hol_block_en(endpoint, false); +} + void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa) { u32 i; @@ -884,9 +897,8 @@ void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa) if (endpoint->toward_ipa || endpoint->ee_id != GSI_EE_MODEM) continue; - ipa_endpoint_init_hol_block_enable(endpoint, false); - ipa_endpoint_init_hol_block_timer(endpoint, 0); - ipa_endpoint_init_hol_block_enable(endpoint, true); + ipa_endpoint_init_hol_block_disable(endpoint); + ipa_endpoint_init_hol_block_enable(endpoint, 0); } } @@ -1141,18 +1153,19 @@ static void ipa_endpoint_skb_copy(struct ipa_endpoint *endpoint, { struct sk_buff *skb; + if (!endpoint->netdev) + return; + skb = __dev_alloc_skb(len, GFP_ATOMIC); - if (skb) { - skb_put(skb, len); - memcpy(skb->data, data, len); - skb->truesize += extra; - } + if (!skb) + return; + + /* Copy the data into the socket buffer and receive it */ + skb_put(skb, len); + memcpy(skb->data, data, len); + skb->truesize += extra; - /* Now receive it, or drop it if there's no netdev */ - if (endpoint->netdev) - ipa_modem_skb_rx(endpoint->netdev, skb); - else if (skb) - dev_kfree_skb_any(skb); + ipa_modem_skb_rx(endpoint->netdev, skb); } static bool ipa_endpoint_skb_build(struct ipa_endpoint *endpoint, @@ -1530,6 +1543,8 @@ static void ipa_endpoint_program(struct ipa_endpoint *endpoint) ipa_endpoint_init_hdr_metadata_mask(endpoint); ipa_endpoint_init_mode(endpoint); ipa_endpoint_init_aggr(endpoint); + if (!endpoint->toward_ipa) + ipa_endpoint_init_hol_block_disable(endpoint); ipa_endpoint_init_deaggr(endpoint); ipa_endpoint_init_rsrc_grp(endpoint); ipa_endpoint_init_seq(endpoint); diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c index cdfa98a76e1f..6960efbe66dd 100644 --- a/drivers/net/ipa/ipa_main.c +++ b/drivers/net/ipa/ipa_main.c @@ -29,6 +29,7 @@ #include "ipa_mem.h" #include "ipa_table.h" #include "ipa_modem.h" +#include "ipa_smp2p.h" #include "ipa_uc.h" #include "ipa_interrupt.h" #include "gsi_trans.h" @@ -733,7 +734,7 @@ static int ipa_probe(struct platform_device *pdev) if (ret) goto err_endpoint_exit; - ret = ipa_modem_init(ipa, modem_init); + ret = ipa_smp2p_init(ipa, modem_init); if (ret) goto err_table_exit; @@ -775,7 +776,7 @@ err_deconfig: ipa_deconfig(ipa); err_power_put: pm_runtime_put_noidle(dev); - ipa_modem_exit(ipa); + ipa_smp2p_exit(ipa); err_table_exit: ipa_table_exit(ipa); err_endpoint_exit: @@ -821,7 +822,7 @@ static int ipa_remove(struct platform_device *pdev) ipa_deconfig(ipa); out_power_put: pm_runtime_put_noidle(dev); - ipa_modem_exit(ipa); + ipa_smp2p_exit(ipa); ipa_table_exit(ipa); ipa_endpoint_exit(ipa); gsi_exit(&ipa->gsi); diff --git a/drivers/net/ipa/ipa_modem.c b/drivers/net/ipa/ipa_modem.c index ad116bcc0580..33ac626bd803 100644 --- a/drivers/net/ipa/ipa_modem.c +++ b/drivers/net/ipa/ipa_modem.c @@ -442,16 +442,6 @@ static int ipa_modem_notify(struct notifier_block *nb, unsigned long action, return NOTIFY_OK; } -int ipa_modem_init(struct ipa *ipa, bool modem_init) -{ - return ipa_smp2p_init(ipa, modem_init); -} - -void ipa_modem_exit(struct ipa *ipa) -{ - ipa_smp2p_exit(ipa); -} - int ipa_modem_config(struct ipa *ipa) { void *notifier; diff --git a/drivers/net/ipa/ipa_modem.h b/drivers/net/ipa/ipa_modem.h index 5e6e3d234454..e64ccc2402e9 100644 --- a/drivers/net/ipa/ipa_modem.h +++ b/drivers/net/ipa/ipa_modem.h @@ -18,9 +18,6 @@ void ipa_modem_skb_rx(struct net_device *netdev, struct sk_buff *skb); void ipa_modem_suspend(struct net_device *netdev); void ipa_modem_resume(struct net_device *netdev); -int ipa_modem_init(struct ipa *ipa, bool modem_init); -void ipa_modem_exit(struct ipa *ipa); - int ipa_modem_config(struct ipa *ipa); void ipa_modem_deconfig(struct ipa *ipa); diff --git a/drivers/net/ipa/ipa_table.c b/drivers/net/ipa/ipa_table.c index 1da334f54944..2f5a58bfc529 100644 --- a/drivers/net/ipa/ipa_table.c +++ b/drivers/net/ipa/ipa_table.c @@ -419,21 +419,26 @@ static void ipa_table_init_add(struct gsi_trans *trans, bool filter, const struct ipa_mem *mem = ipa_mem_find(ipa, mem_id); dma_addr_t hash_addr; dma_addr_t addr; + u32 zero_offset; u16 hash_count; + u32 zero_size; u16 hash_size; u16 count; u16 size; - /* The number of filtering endpoints determines number of entries - * in the filter table. The hashed and non-hashed filter table - * will have the same number of entries. The size of the route - * table region determines the number of entries it has. - */ + /* Compute the number of table entries to initialize */ if (filter) { - /* Include one extra "slot" to hold the filter map itself */ + /* The number of filtering endpoints determines number of + * entries in the filter table; we also add one more "slot" + * to hold the bitmap itself. The size of the hashed filter + * table is either the same as the non-hashed one, or zero. + */ count = 1 + hweight32(ipa->filter_map); hash_count = hash_mem->size ? count : 0; } else { + /* The size of a route table region determines the number + * of entries it has. + */ count = mem->size / sizeof(__le64); hash_count = hash_mem->size / sizeof(__le64); } @@ -445,13 +450,42 @@ static void ipa_table_init_add(struct gsi_trans *trans, bool filter, ipa_cmd_table_init_add(trans, opcode, size, mem->offset, addr, hash_size, hash_mem->offset, hash_addr); + if (!filter) + return; + + /* Zero the unused space in the filter table */ + zero_offset = mem->offset + size; + zero_size = mem->size - size; + ipa_cmd_dma_shared_mem_add(trans, zero_offset, zero_size, + ipa->zero_addr, true); + if (!hash_size) + return; + + /* Zero the unused space in the hashed filter table */ + zero_offset = hash_mem->offset + hash_size; + zero_size = hash_mem->size - hash_size; + ipa_cmd_dma_shared_mem_add(trans, zero_offset, zero_size, + ipa->zero_addr, true); } int ipa_table_setup(struct ipa *ipa) { struct gsi_trans *trans; - trans = ipa_cmd_trans_alloc(ipa, 4); + /* We will need at most 8 TREs: + * - IPv4: + * - One for route table initialization (non-hashed and hashed) + * - One for filter table initialization (non-hashed and hashed) + * - One to zero unused entries in the non-hashed filter table + * - One to zero unused entries in the hashed filter table + * - IPv6: + * - One for route table initialization (non-hashed and hashed) + * - One for filter table initialization (non-hashed and hashed) + * - One to zero unused entries in the non-hashed filter table + * - One to zero unused entries in the hashed filter table + * All platforms support at least 8 TREs in a transaction. + */ + trans = ipa_cmd_trans_alloc(ipa, 8); if (!trans) { dev_err(&ipa->pdev->dev, "no transaction for table setup\n"); return -EBUSY; |