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![Vignesh Raghavendra](/assets/img/avatar_default.png)
In preparation of adding more K3 SoCs, separate soc specific initialization add a SoC specific initialization hook. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
1135 lines
28 KiB
C
1135 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* TI K3 AM65x NAVSS Ring accelerator Manager (RA) subsystem driver
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*
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* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <log.h>
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#include <asm/cache.h>
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#include <asm/io.h>
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#include <malloc.h>
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#include <asm/bitops.h>
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#include <dm.h>
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#include <dm/device_compat.h>
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#include <dm/devres.h>
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#include <dm/read.h>
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#include <dm/uclass.h>
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#include <linux/bitops.h>
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#include <linux/compat.h>
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#include <linux/dma-mapping.h>
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#include <linux/err.h>
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#include <linux/soc/ti/k3-navss-ringacc.h>
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#include <linux/soc/ti/ti_sci_protocol.h>
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#define set_bit(bit, bitmap) __set_bit(bit, bitmap)
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#define clear_bit(bit, bitmap) __clear_bit(bit, bitmap)
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#define dma_free_coherent(dev, size, cpu_addr, dma_handle) \
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dma_free_coherent(cpu_addr)
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#define dma_zalloc_coherent(dev, size, dma_handle, flag) \
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({ \
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void *ring_mem_virt; \
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ring_mem_virt = dma_alloc_coherent((size), \
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(unsigned long *)(dma_handle)); \
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if (ring_mem_virt) \
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memset(ring_mem_virt, 0, (size)); \
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ring_mem_virt; \
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})
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static LIST_HEAD(k3_nav_ringacc_list);
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static void ringacc_writel(u32 v, void __iomem *reg)
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{
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pr_debug("WRITEL(32): v(%08X)-->reg(%p)\n", v, reg);
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writel(v, reg);
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}
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static u32 ringacc_readl(void __iomem *reg)
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{
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u32 v;
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v = readl(reg);
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pr_debug("READL(32): v(%08X)<--reg(%p)\n", v, reg);
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return v;
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}
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#define KNAV_RINGACC_CFG_RING_SIZE_ELCNT_MASK GENMASK(19, 0)
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/**
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* struct k3_nav_ring_rt_regs - The RA Control/Status Registers region
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*/
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struct k3_nav_ring_rt_regs {
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u32 resv_16[4];
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u32 db; /* RT Ring N Doorbell Register */
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u32 resv_4[1];
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u32 occ; /* RT Ring N Occupancy Register */
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u32 indx; /* RT Ring N Current Index Register */
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u32 hwocc; /* RT Ring N Hardware Occupancy Register */
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u32 hwindx; /* RT Ring N Current Index Register */
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};
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#define KNAV_RINGACC_RT_REGS_STEP 0x1000
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/**
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* struct k3_nav_ring_fifo_regs - The Ring Accelerator Queues Registers region
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*/
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struct k3_nav_ring_fifo_regs {
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u32 head_data[128]; /* Ring Head Entry Data Registers */
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u32 tail_data[128]; /* Ring Tail Entry Data Registers */
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u32 peek_head_data[128]; /* Ring Peek Head Entry Data Regs */
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u32 peek_tail_data[128]; /* Ring Peek Tail Entry Data Regs */
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};
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/**
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* struct k3_ringacc_proxy_gcfg_regs - RA Proxy Global Config MMIO Region
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*/
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struct k3_ringacc_proxy_gcfg_regs {
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u32 revision; /* Revision Register */
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u32 config; /* Config Register */
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};
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#define K3_RINGACC_PROXY_CFG_THREADS_MASK GENMASK(15, 0)
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/**
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* struct k3_ringacc_proxy_target_regs - RA Proxy Datapath MMIO Region
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*/
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struct k3_ringacc_proxy_target_regs {
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u32 control; /* Proxy Control Register */
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u32 status; /* Proxy Status Register */
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u8 resv_512[504];
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u32 data[128]; /* Proxy Data Register */
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};
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#define K3_RINGACC_PROXY_TARGET_STEP 0x1000
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#define K3_RINGACC_PROXY_NOT_USED (-1)
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enum k3_ringacc_proxy_access_mode {
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PROXY_ACCESS_MODE_HEAD = 0,
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PROXY_ACCESS_MODE_TAIL = 1,
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PROXY_ACCESS_MODE_PEEK_HEAD = 2,
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PROXY_ACCESS_MODE_PEEK_TAIL = 3,
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};
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#define KNAV_RINGACC_FIFO_WINDOW_SIZE_BYTES (512U)
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#define KNAV_RINGACC_FIFO_REGS_STEP 0x1000
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#define KNAV_RINGACC_MAX_DB_RING_CNT (127U)
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/**
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* struct k3_nav_ring_ops - Ring operations
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*/
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struct k3_nav_ring_ops {
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int (*push_tail)(struct k3_nav_ring *ring, void *elm);
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int (*push_head)(struct k3_nav_ring *ring, void *elm);
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int (*pop_tail)(struct k3_nav_ring *ring, void *elm);
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int (*pop_head)(struct k3_nav_ring *ring, void *elm);
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};
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/**
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* struct k3_nav_ring_state - Internal state tracking structure
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*
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* @free: Number of free entries
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* @occ: Occupancy
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* @windex: Write index
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* @rindex: Read index
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*/
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struct k3_nav_ring_state {
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u32 free;
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u32 occ;
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u32 windex;
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u32 rindex;
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u32 tdown_complete:1;
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};
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/**
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* struct k3_nav_ring - RA Ring descriptor
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*
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* @rt - Ring control/status registers
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* @fifos - Ring queues registers
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* @proxy - Ring Proxy Datapath registers
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* @ring_mem_dma - Ring buffer dma address
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* @ring_mem_virt - Ring buffer virt address
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* @ops - Ring operations
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* @size - Ring size in elements
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* @elm_size - Size of the ring element
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* @mode - Ring mode
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* @flags - flags
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* @ring_id - Ring Id
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* @parent - Pointer on struct @k3_nav_ringacc
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* @use_count - Use count for shared rings
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* @proxy_id - RA Ring Proxy Id (only if @K3_NAV_RINGACC_RING_USE_PROXY)
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*/
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struct k3_nav_ring {
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struct k3_nav_ring_rt_regs __iomem *rt;
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struct k3_nav_ring_fifo_regs __iomem *fifos;
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struct k3_ringacc_proxy_target_regs __iomem *proxy;
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dma_addr_t ring_mem_dma;
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void *ring_mem_virt;
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struct k3_nav_ring_ops *ops;
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u32 size;
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enum k3_nav_ring_size elm_size;
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enum k3_nav_ring_mode mode;
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u32 flags;
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#define KNAV_RING_FLAG_BUSY BIT(1)
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#define K3_NAV_RING_FLAG_SHARED BIT(2)
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struct k3_nav_ring_state state;
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u32 ring_id;
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struct k3_nav_ringacc *parent;
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u32 use_count;
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int proxy_id;
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};
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struct k3_nav_ringacc_ops {
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int (*init)(struct udevice *dev, struct k3_nav_ringacc *ringacc);
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};
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/**
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* struct k3_nav_ringacc - Rings accelerator descriptor
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*
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* @dev - pointer on RA device
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* @proxy_gcfg - RA proxy global config registers
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* @proxy_target_base - RA proxy datapath region
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* @num_rings - number of ring in RA
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* @rm_gp_range - general purpose rings range from tisci
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* @dma_ring_reset_quirk - DMA reset w/a enable
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* @num_proxies - number of RA proxies
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* @rings - array of rings descriptors (struct @k3_nav_ring)
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* @list - list of RAs in the system
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* @tisci - pointer ti-sci handle
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* @tisci_ring_ops - ti-sci rings ops
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* @tisci_dev_id - ti-sci device id
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* @ops: SoC specific ringacc operation
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*/
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struct k3_nav_ringacc {
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struct udevice *dev;
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struct k3_ringacc_proxy_gcfg_regs __iomem *proxy_gcfg;
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void __iomem *proxy_target_base;
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u32 num_rings; /* number of rings in Ringacc module */
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unsigned long *rings_inuse;
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struct ti_sci_resource *rm_gp_range;
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bool dma_ring_reset_quirk;
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u32 num_proxies;
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unsigned long *proxy_inuse;
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struct k3_nav_ring *rings;
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struct list_head list;
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const struct ti_sci_handle *tisci;
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const struct ti_sci_rm_ringacc_ops *tisci_ring_ops;
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u32 tisci_dev_id;
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const struct k3_nav_ringacc_ops *ops;
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};
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static long k3_nav_ringacc_ring_get_fifo_pos(struct k3_nav_ring *ring)
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{
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return KNAV_RINGACC_FIFO_WINDOW_SIZE_BYTES -
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(4 << ring->elm_size);
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}
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static void *k3_nav_ringacc_get_elm_addr(struct k3_nav_ring *ring, u32 idx)
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{
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return (idx * (4 << ring->elm_size) + ring->ring_mem_virt);
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}
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static int k3_nav_ringacc_ring_push_mem(struct k3_nav_ring *ring, void *elem);
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static int k3_nav_ringacc_ring_pop_mem(struct k3_nav_ring *ring, void *elem);
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static struct k3_nav_ring_ops k3_nav_mode_ring_ops = {
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.push_tail = k3_nav_ringacc_ring_push_mem,
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.pop_head = k3_nav_ringacc_ring_pop_mem,
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};
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static int k3_nav_ringacc_ring_push_io(struct k3_nav_ring *ring, void *elem);
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static int k3_nav_ringacc_ring_pop_io(struct k3_nav_ring *ring, void *elem);
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static int k3_nav_ringacc_ring_push_head_io(struct k3_nav_ring *ring,
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void *elem);
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static int k3_nav_ringacc_ring_pop_tail_io(struct k3_nav_ring *ring,
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void *elem);
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static struct k3_nav_ring_ops k3_nav_mode_msg_ops = {
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.push_tail = k3_nav_ringacc_ring_push_io,
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.push_head = k3_nav_ringacc_ring_push_head_io,
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.pop_tail = k3_nav_ringacc_ring_pop_tail_io,
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.pop_head = k3_nav_ringacc_ring_pop_io,
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};
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static int k3_ringacc_ring_push_head_proxy(struct k3_nav_ring *ring,
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void *elem);
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static int k3_ringacc_ring_push_tail_proxy(struct k3_nav_ring *ring,
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void *elem);
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static int k3_ringacc_ring_pop_head_proxy(struct k3_nav_ring *ring, void *elem);
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static int k3_ringacc_ring_pop_tail_proxy(struct k3_nav_ring *ring, void *elem);
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static struct k3_nav_ring_ops k3_nav_mode_proxy_ops = {
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.push_tail = k3_ringacc_ring_push_tail_proxy,
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.push_head = k3_ringacc_ring_push_head_proxy,
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.pop_tail = k3_ringacc_ring_pop_tail_proxy,
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.pop_head = k3_ringacc_ring_pop_head_proxy,
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};
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struct udevice *k3_nav_ringacc_get_dev(struct k3_nav_ringacc *ringacc)
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{
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return ringacc->dev;
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}
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struct k3_nav_ring *k3_nav_ringacc_request_ring(struct k3_nav_ringacc *ringacc,
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int id, u32 flags)
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{
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int proxy_id = K3_RINGACC_PROXY_NOT_USED;
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if (id == K3_NAV_RINGACC_RING_ID_ANY) {
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/* Request for any general purpose ring */
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struct ti_sci_resource_desc *gp_rings =
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&ringacc->rm_gp_range->desc[0];
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unsigned long size;
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size = gp_rings->start + gp_rings->num;
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id = find_next_zero_bit(ringacc->rings_inuse,
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size, gp_rings->start);
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if (id == size)
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goto error;
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} else if (id < 0) {
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goto error;
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}
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if (test_bit(id, ringacc->rings_inuse) &&
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!(ringacc->rings[id].flags & K3_NAV_RING_FLAG_SHARED))
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goto error;
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else if (ringacc->rings[id].flags & K3_NAV_RING_FLAG_SHARED)
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goto out;
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if (flags & K3_NAV_RINGACC_RING_USE_PROXY) {
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proxy_id = find_next_zero_bit(ringacc->proxy_inuse,
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ringacc->num_proxies, 0);
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if (proxy_id == ringacc->num_proxies)
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goto error;
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}
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if (!try_module_get(ringacc->dev->driver->owner))
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goto error;
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if (proxy_id != K3_RINGACC_PROXY_NOT_USED) {
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set_bit(proxy_id, ringacc->proxy_inuse);
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ringacc->rings[id].proxy_id = proxy_id;
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pr_debug("Giving ring#%d proxy#%d\n",
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id, proxy_id);
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} else {
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pr_debug("Giving ring#%d\n", id);
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}
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set_bit(id, ringacc->rings_inuse);
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out:
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ringacc->rings[id].use_count++;
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return &ringacc->rings[id];
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error:
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return NULL;
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}
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int k3_nav_ringacc_request_rings_pair(struct k3_nav_ringacc *ringacc,
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int fwd_id, int compl_id,
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struct k3_nav_ring **fwd_ring,
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struct k3_nav_ring **compl_ring)
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{
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int ret = 0;
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if (!fwd_ring || !compl_ring)
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return -EINVAL;
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*fwd_ring = k3_nav_ringacc_request_ring(ringacc, fwd_id, 0);
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if (!(*fwd_ring))
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return -ENODEV;
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*compl_ring = k3_nav_ringacc_request_ring(ringacc, compl_id, 0);
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if (!(*compl_ring)) {
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k3_nav_ringacc_ring_free(*fwd_ring);
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ret = -ENODEV;
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}
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return ret;
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}
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static void k3_ringacc_ring_reset_sci(struct k3_nav_ring *ring)
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{
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struct k3_nav_ringacc *ringacc = ring->parent;
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int ret;
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ret = ringacc->tisci_ring_ops->config(
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ringacc->tisci,
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TI_SCI_MSG_VALUE_RM_RING_COUNT_VALID,
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ringacc->tisci_dev_id,
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ring->ring_id,
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0,
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0,
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ring->size,
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0,
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0,
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0);
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if (ret)
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dev_err(ringacc->dev, "TISCI reset ring fail (%d) ring_idx %d\n",
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ret, ring->ring_id);
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}
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void k3_nav_ringacc_ring_reset(struct k3_nav_ring *ring)
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{
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if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
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return;
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memset(&ring->state, 0, sizeof(ring->state));
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k3_ringacc_ring_reset_sci(ring);
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}
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static void k3_ringacc_ring_reconfig_qmode_sci(struct k3_nav_ring *ring,
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enum k3_nav_ring_mode mode)
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{
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struct k3_nav_ringacc *ringacc = ring->parent;
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int ret;
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ret = ringacc->tisci_ring_ops->config(
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ringacc->tisci,
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TI_SCI_MSG_VALUE_RM_RING_MODE_VALID,
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ringacc->tisci_dev_id,
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ring->ring_id,
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0,
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0,
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0,
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mode,
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0,
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0);
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if (ret)
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dev_err(ringacc->dev, "TISCI reconf qmode fail (%d) ring_idx %d\n",
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ret, ring->ring_id);
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}
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void k3_nav_ringacc_ring_reset_dma(struct k3_nav_ring *ring, u32 occ)
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{
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if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
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return;
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if (!ring->parent->dma_ring_reset_quirk) {
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k3_nav_ringacc_ring_reset(ring);
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return;
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}
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if (!occ)
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occ = ringacc_readl(&ring->rt->occ);
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if (occ) {
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u32 db_ring_cnt, db_ring_cnt_cur;
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pr_debug("%s %u occ: %u\n", __func__,
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ring->ring_id, occ);
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/* 2. Reset the ring */
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k3_ringacc_ring_reset_sci(ring);
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/*
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* 3. Setup the ring in ring/doorbell mode
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* (if not already in this mode)
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*/
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if (ring->mode != K3_NAV_RINGACC_RING_MODE_RING)
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k3_ringacc_ring_reconfig_qmode_sci(
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ring, K3_NAV_RINGACC_RING_MODE_RING);
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/*
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* 4. Ring the doorbell 2**22 – ringOcc times.
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* This will wrap the internal UDMAP ring state occupancy
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* counter (which is 21-bits wide) to 0.
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*/
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db_ring_cnt = (1U << 22) - occ;
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while (db_ring_cnt != 0) {
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/*
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* Ring the doorbell with the maximum count each
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* iteration if possible to minimize the total
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* of writes
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*/
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if (db_ring_cnt > KNAV_RINGACC_MAX_DB_RING_CNT)
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db_ring_cnt_cur = KNAV_RINGACC_MAX_DB_RING_CNT;
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else
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db_ring_cnt_cur = db_ring_cnt;
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writel(db_ring_cnt_cur, &ring->rt->db);
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db_ring_cnt -= db_ring_cnt_cur;
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}
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/* 5. Restore the original ring mode (if not ring mode) */
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if (ring->mode != K3_NAV_RINGACC_RING_MODE_RING)
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k3_ringacc_ring_reconfig_qmode_sci(ring, ring->mode);
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}
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/* 2. Reset the ring */
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k3_nav_ringacc_ring_reset(ring);
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}
|
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|
||
static void k3_ringacc_ring_free_sci(struct k3_nav_ring *ring)
|
||
{
|
||
struct k3_nav_ringacc *ringacc = ring->parent;
|
||
int ret;
|
||
|
||
ret = ringacc->tisci_ring_ops->config(
|
||
ringacc->tisci,
|
||
TI_SCI_MSG_VALUE_RM_ALL_NO_ORDER,
|
||
ringacc->tisci_dev_id,
|
||
ring->ring_id,
|
||
0,
|
||
0,
|
||
0,
|
||
0,
|
||
0,
|
||
0);
|
||
if (ret)
|
||
dev_err(ringacc->dev, "TISCI ring free fail (%d) ring_idx %d\n",
|
||
ret, ring->ring_id);
|
||
}
|
||
|
||
int k3_nav_ringacc_ring_free(struct k3_nav_ring *ring)
|
||
{
|
||
struct k3_nav_ringacc *ringacc;
|
||
|
||
if (!ring)
|
||
return -EINVAL;
|
||
|
||
ringacc = ring->parent;
|
||
|
||
pr_debug("%s flags: 0x%08x\n", __func__, ring->flags);
|
||
|
||
if (!test_bit(ring->ring_id, ringacc->rings_inuse))
|
||
return -EINVAL;
|
||
|
||
if (--ring->use_count)
|
||
goto out;
|
||
|
||
if (!(ring->flags & KNAV_RING_FLAG_BUSY))
|
||
goto no_init;
|
||
|
||
k3_ringacc_ring_free_sci(ring);
|
||
|
||
dma_free_coherent(ringacc->dev,
|
||
ring->size * (4 << ring->elm_size),
|
||
ring->ring_mem_virt, ring->ring_mem_dma);
|
||
ring->flags &= ~KNAV_RING_FLAG_BUSY;
|
||
ring->ops = NULL;
|
||
if (ring->proxy_id != K3_RINGACC_PROXY_NOT_USED) {
|
||
clear_bit(ring->proxy_id, ringacc->proxy_inuse);
|
||
ring->proxy = NULL;
|
||
ring->proxy_id = K3_RINGACC_PROXY_NOT_USED;
|
||
}
|
||
|
||
no_init:
|
||
clear_bit(ring->ring_id, ringacc->rings_inuse);
|
||
|
||
module_put(ringacc->dev->driver->owner);
|
||
|
||
out:
|
||
return 0;
|
||
}
|
||
|
||
u32 k3_nav_ringacc_get_ring_id(struct k3_nav_ring *ring)
|
||
{
|
||
if (!ring)
|
||
return -EINVAL;
|
||
|
||
return ring->ring_id;
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_cfg_sci(struct k3_nav_ring *ring)
|
||
{
|
||
struct k3_nav_ringacc *ringacc = ring->parent;
|
||
u32 ring_idx;
|
||
int ret;
|
||
|
||
if (!ringacc->tisci)
|
||
return -EINVAL;
|
||
|
||
ring_idx = ring->ring_id;
|
||
ret = ringacc->tisci_ring_ops->config(
|
||
ringacc->tisci,
|
||
TI_SCI_MSG_VALUE_RM_ALL_NO_ORDER,
|
||
ringacc->tisci_dev_id,
|
||
ring_idx,
|
||
lower_32_bits(ring->ring_mem_dma),
|
||
upper_32_bits(ring->ring_mem_dma),
|
||
ring->size,
|
||
ring->mode,
|
||
ring->elm_size,
|
||
0);
|
||
if (ret)
|
||
dev_err(ringacc->dev, "TISCI config ring fail (%d) ring_idx %d\n",
|
||
ret, ring_idx);
|
||
|
||
return ret;
|
||
}
|
||
|
||
int k3_nav_ringacc_ring_cfg(struct k3_nav_ring *ring,
|
||
struct k3_nav_ring_cfg *cfg)
|
||
{
|
||
struct k3_nav_ringacc *ringacc = ring->parent;
|
||
int ret = 0;
|
||
|
||
if (!ring || !cfg)
|
||
return -EINVAL;
|
||
if (cfg->elm_size > K3_NAV_RINGACC_RING_ELSIZE_256 ||
|
||
cfg->mode > K3_NAV_RINGACC_RING_MODE_QM ||
|
||
cfg->size & ~KNAV_RINGACC_CFG_RING_SIZE_ELCNT_MASK ||
|
||
!test_bit(ring->ring_id, ringacc->rings_inuse))
|
||
return -EINVAL;
|
||
|
||
if (ring->use_count != 1)
|
||
return 0;
|
||
|
||
ring->size = cfg->size;
|
||
ring->elm_size = cfg->elm_size;
|
||
ring->mode = cfg->mode;
|
||
memset(&ring->state, 0, sizeof(ring->state));
|
||
|
||
if (ring->proxy_id != K3_RINGACC_PROXY_NOT_USED)
|
||
ring->proxy = ringacc->proxy_target_base +
|
||
ring->proxy_id * K3_RINGACC_PROXY_TARGET_STEP;
|
||
|
||
switch (ring->mode) {
|
||
case K3_NAV_RINGACC_RING_MODE_RING:
|
||
ring->ops = &k3_nav_mode_ring_ops;
|
||
break;
|
||
case K3_NAV_RINGACC_RING_MODE_QM:
|
||
/*
|
||
* In Queue mode elm_size can be 8 only and each operation
|
||
* uses 2 element slots
|
||
*/
|
||
if (cfg->elm_size != K3_NAV_RINGACC_RING_ELSIZE_8 ||
|
||
cfg->size % 2)
|
||
goto err_free_proxy;
|
||
case K3_NAV_RINGACC_RING_MODE_MESSAGE:
|
||
if (ring->proxy)
|
||
ring->ops = &k3_nav_mode_proxy_ops;
|
||
else
|
||
ring->ops = &k3_nav_mode_msg_ops;
|
||
break;
|
||
default:
|
||
ring->ops = NULL;
|
||
ret = -EINVAL;
|
||
goto err_free_proxy;
|
||
};
|
||
|
||
ring->ring_mem_virt =
|
||
dma_zalloc_coherent(ringacc->dev,
|
||
ring->size * (4 << ring->elm_size),
|
||
&ring->ring_mem_dma, GFP_KERNEL);
|
||
if (!ring->ring_mem_virt) {
|
||
dev_err(ringacc->dev, "Failed to alloc ring mem\n");
|
||
ret = -ENOMEM;
|
||
goto err_free_ops;
|
||
}
|
||
|
||
ret = k3_nav_ringacc_ring_cfg_sci(ring);
|
||
|
||
if (ret)
|
||
goto err_free_mem;
|
||
|
||
ring->flags |= KNAV_RING_FLAG_BUSY;
|
||
ring->flags |= (cfg->flags & K3_NAV_RINGACC_RING_SHARED) ?
|
||
K3_NAV_RING_FLAG_SHARED : 0;
|
||
|
||
return 0;
|
||
|
||
err_free_mem:
|
||
dma_free_coherent(ringacc->dev,
|
||
ring->size * (4 << ring->elm_size),
|
||
ring->ring_mem_virt,
|
||
ring->ring_mem_dma);
|
||
err_free_ops:
|
||
ring->ops = NULL;
|
||
err_free_proxy:
|
||
ring->proxy = NULL;
|
||
return ret;
|
||
}
|
||
|
||
u32 k3_nav_ringacc_ring_get_size(struct k3_nav_ring *ring)
|
||
{
|
||
if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
|
||
return -EINVAL;
|
||
|
||
return ring->size;
|
||
}
|
||
|
||
u32 k3_nav_ringacc_ring_get_free(struct k3_nav_ring *ring)
|
||
{
|
||
if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
|
||
return -EINVAL;
|
||
|
||
if (!ring->state.free)
|
||
ring->state.free = ring->size - ringacc_readl(&ring->rt->occ);
|
||
|
||
return ring->state.free;
|
||
}
|
||
|
||
u32 k3_nav_ringacc_ring_get_occ(struct k3_nav_ring *ring)
|
||
{
|
||
if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
|
||
return -EINVAL;
|
||
|
||
return ringacc_readl(&ring->rt->occ);
|
||
}
|
||
|
||
u32 k3_nav_ringacc_ring_is_full(struct k3_nav_ring *ring)
|
||
{
|
||
return !k3_nav_ringacc_ring_get_free(ring);
|
||
}
|
||
|
||
enum k3_ringacc_access_mode {
|
||
K3_RINGACC_ACCESS_MODE_PUSH_HEAD,
|
||
K3_RINGACC_ACCESS_MODE_POP_HEAD,
|
||
K3_RINGACC_ACCESS_MODE_PUSH_TAIL,
|
||
K3_RINGACC_ACCESS_MODE_POP_TAIL,
|
||
K3_RINGACC_ACCESS_MODE_PEEK_HEAD,
|
||
K3_RINGACC_ACCESS_MODE_PEEK_TAIL,
|
||
};
|
||
|
||
static int k3_ringacc_ring_cfg_proxy(struct k3_nav_ring *ring,
|
||
enum k3_ringacc_proxy_access_mode mode)
|
||
{
|
||
u32 val;
|
||
|
||
val = ring->ring_id;
|
||
val |= mode << 16;
|
||
val |= ring->elm_size << 24;
|
||
ringacc_writel(val, &ring->proxy->control);
|
||
return 0;
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_access_proxy(
|
||
struct k3_nav_ring *ring, void *elem,
|
||
enum k3_ringacc_access_mode access_mode)
|
||
{
|
||
void __iomem *ptr;
|
||
|
||
ptr = (void __iomem *)&ring->proxy->data;
|
||
|
||
switch (access_mode) {
|
||
case K3_RINGACC_ACCESS_MODE_PUSH_HEAD:
|
||
case K3_RINGACC_ACCESS_MODE_POP_HEAD:
|
||
k3_ringacc_ring_cfg_proxy(ring, PROXY_ACCESS_MODE_HEAD);
|
||
break;
|
||
case K3_RINGACC_ACCESS_MODE_PUSH_TAIL:
|
||
case K3_RINGACC_ACCESS_MODE_POP_TAIL:
|
||
k3_ringacc_ring_cfg_proxy(ring, PROXY_ACCESS_MODE_TAIL);
|
||
break;
|
||
default:
|
||
return -EINVAL;
|
||
}
|
||
|
||
ptr += k3_nav_ringacc_ring_get_fifo_pos(ring);
|
||
|
||
switch (access_mode) {
|
||
case K3_RINGACC_ACCESS_MODE_POP_HEAD:
|
||
case K3_RINGACC_ACCESS_MODE_POP_TAIL:
|
||
pr_debug("proxy:memcpy_fromio(x): --> ptr(%p), mode:%d\n",
|
||
ptr, access_mode);
|
||
memcpy_fromio(elem, ptr, (4 << ring->elm_size));
|
||
ring->state.occ--;
|
||
break;
|
||
case K3_RINGACC_ACCESS_MODE_PUSH_TAIL:
|
||
case K3_RINGACC_ACCESS_MODE_PUSH_HEAD:
|
||
pr_debug("proxy:memcpy_toio(x): --> ptr(%p), mode:%d\n",
|
||
ptr, access_mode);
|
||
memcpy_toio(ptr, elem, (4 << ring->elm_size));
|
||
ring->state.free--;
|
||
break;
|
||
default:
|
||
return -EINVAL;
|
||
}
|
||
|
||
pr_debug("proxy: free%d occ%d\n",
|
||
ring->state.free, ring->state.occ);
|
||
return 0;
|
||
}
|
||
|
||
static int k3_ringacc_ring_push_head_proxy(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
return k3_nav_ringacc_ring_access_proxy(
|
||
ring, elem, K3_RINGACC_ACCESS_MODE_PUSH_HEAD);
|
||
}
|
||
|
||
static int k3_ringacc_ring_push_tail_proxy(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
return k3_nav_ringacc_ring_access_proxy(
|
||
ring, elem, K3_RINGACC_ACCESS_MODE_PUSH_TAIL);
|
||
}
|
||
|
||
static int k3_ringacc_ring_pop_head_proxy(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
return k3_nav_ringacc_ring_access_proxy(
|
||
ring, elem, K3_RINGACC_ACCESS_MODE_POP_HEAD);
|
||
}
|
||
|
||
static int k3_ringacc_ring_pop_tail_proxy(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
return k3_nav_ringacc_ring_access_proxy(
|
||
ring, elem, K3_RINGACC_ACCESS_MODE_POP_HEAD);
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_access_io(
|
||
struct k3_nav_ring *ring, void *elem,
|
||
enum k3_ringacc_access_mode access_mode)
|
||
{
|
||
void __iomem *ptr;
|
||
|
||
switch (access_mode) {
|
||
case K3_RINGACC_ACCESS_MODE_PUSH_HEAD:
|
||
case K3_RINGACC_ACCESS_MODE_POP_HEAD:
|
||
ptr = (void __iomem *)&ring->fifos->head_data;
|
||
break;
|
||
case K3_RINGACC_ACCESS_MODE_PUSH_TAIL:
|
||
case K3_RINGACC_ACCESS_MODE_POP_TAIL:
|
||
ptr = (void __iomem *)&ring->fifos->tail_data;
|
||
break;
|
||
default:
|
||
return -EINVAL;
|
||
}
|
||
|
||
ptr += k3_nav_ringacc_ring_get_fifo_pos(ring);
|
||
|
||
switch (access_mode) {
|
||
case K3_RINGACC_ACCESS_MODE_POP_HEAD:
|
||
case K3_RINGACC_ACCESS_MODE_POP_TAIL:
|
||
pr_debug("memcpy_fromio(x): --> ptr(%p), mode:%d\n",
|
||
ptr, access_mode);
|
||
memcpy_fromio(elem, ptr, (4 << ring->elm_size));
|
||
ring->state.occ--;
|
||
break;
|
||
case K3_RINGACC_ACCESS_MODE_PUSH_TAIL:
|
||
case K3_RINGACC_ACCESS_MODE_PUSH_HEAD:
|
||
pr_debug("memcpy_toio(x): --> ptr(%p), mode:%d\n",
|
||
ptr, access_mode);
|
||
memcpy_toio(ptr, elem, (4 << ring->elm_size));
|
||
ring->state.free--;
|
||
break;
|
||
default:
|
||
return -EINVAL;
|
||
}
|
||
|
||
pr_debug("free%d index%d occ%d index%d\n",
|
||
ring->state.free, ring->state.windex, ring->state.occ, ring->state.rindex);
|
||
return 0;
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_push_head_io(struct k3_nav_ring *ring,
|
||
void *elem)
|
||
{
|
||
return k3_nav_ringacc_ring_access_io(
|
||
ring, elem, K3_RINGACC_ACCESS_MODE_PUSH_HEAD);
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_push_io(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
return k3_nav_ringacc_ring_access_io(
|
||
ring, elem, K3_RINGACC_ACCESS_MODE_PUSH_TAIL);
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_pop_io(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
return k3_nav_ringacc_ring_access_io(
|
||
ring, elem, K3_RINGACC_ACCESS_MODE_POP_HEAD);
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_pop_tail_io(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
return k3_nav_ringacc_ring_access_io(
|
||
ring, elem, K3_RINGACC_ACCESS_MODE_POP_HEAD);
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_push_mem(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
void *elem_ptr;
|
||
|
||
elem_ptr = k3_nav_ringacc_get_elm_addr(ring, ring->state.windex);
|
||
|
||
memcpy(elem_ptr, elem, (4 << ring->elm_size));
|
||
|
||
flush_dcache_range((unsigned long)ring->ring_mem_virt,
|
||
ALIGN((unsigned long)ring->ring_mem_virt +
|
||
ring->size * (4 << ring->elm_size),
|
||
ARCH_DMA_MINALIGN));
|
||
|
||
ring->state.windex = (ring->state.windex + 1) % ring->size;
|
||
ring->state.free--;
|
||
ringacc_writel(1, &ring->rt->db);
|
||
|
||
pr_debug("ring_push_mem: free%d index%d\n",
|
||
ring->state.free, ring->state.windex);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int k3_nav_ringacc_ring_pop_mem(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
void *elem_ptr;
|
||
|
||
elem_ptr = k3_nav_ringacc_get_elm_addr(ring, ring->state.rindex);
|
||
|
||
invalidate_dcache_range((unsigned long)ring->ring_mem_virt,
|
||
ALIGN((unsigned long)ring->ring_mem_virt +
|
||
ring->size * (4 << ring->elm_size),
|
||
ARCH_DMA_MINALIGN));
|
||
|
||
memcpy(elem, elem_ptr, (4 << ring->elm_size));
|
||
|
||
ring->state.rindex = (ring->state.rindex + 1) % ring->size;
|
||
ring->state.occ--;
|
||
ringacc_writel(-1, &ring->rt->db);
|
||
|
||
pr_debug("ring_pop_mem: occ%d index%d pos_ptr%p\n",
|
||
ring->state.occ, ring->state.rindex, elem_ptr);
|
||
return 0;
|
||
}
|
||
|
||
int k3_nav_ringacc_ring_push(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
int ret = -EOPNOTSUPP;
|
||
|
||
if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
|
||
return -EINVAL;
|
||
|
||
pr_debug("ring_push%d: free%d index%d\n",
|
||
ring->ring_id, ring->state.free, ring->state.windex);
|
||
|
||
if (k3_nav_ringacc_ring_is_full(ring))
|
||
return -ENOMEM;
|
||
|
||
if (ring->ops && ring->ops->push_tail)
|
||
ret = ring->ops->push_tail(ring, elem);
|
||
|
||
return ret;
|
||
}
|
||
|
||
int k3_nav_ringacc_ring_push_head(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
int ret = -EOPNOTSUPP;
|
||
|
||
if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
|
||
return -EINVAL;
|
||
|
||
pr_debug("ring_push_head: free%d index%d\n",
|
||
ring->state.free, ring->state.windex);
|
||
|
||
if (k3_nav_ringacc_ring_is_full(ring))
|
||
return -ENOMEM;
|
||
|
||
if (ring->ops && ring->ops->push_head)
|
||
ret = ring->ops->push_head(ring, elem);
|
||
|
||
return ret;
|
||
}
|
||
|
||
int k3_nav_ringacc_ring_pop(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
int ret = -EOPNOTSUPP;
|
||
|
||
if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
|
||
return -EINVAL;
|
||
|
||
if (!ring->state.occ)
|
||
ring->state.occ = k3_nav_ringacc_ring_get_occ(ring);
|
||
|
||
pr_debug("ring_pop%d: occ%d index%d\n",
|
||
ring->ring_id, ring->state.occ, ring->state.rindex);
|
||
|
||
if (!ring->state.occ && !ring->state.tdown_complete)
|
||
return -ENODATA;
|
||
|
||
if (ring->ops && ring->ops->pop_head)
|
||
ret = ring->ops->pop_head(ring, elem);
|
||
|
||
return ret;
|
||
}
|
||
|
||
int k3_nav_ringacc_ring_pop_tail(struct k3_nav_ring *ring, void *elem)
|
||
{
|
||
int ret = -EOPNOTSUPP;
|
||
|
||
if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY))
|
||
return -EINVAL;
|
||
|
||
if (!ring->state.occ)
|
||
ring->state.occ = k3_nav_ringacc_ring_get_occ(ring);
|
||
|
||
pr_debug("ring_pop_tail: occ%d index%d\n",
|
||
ring->state.occ, ring->state.rindex);
|
||
|
||
if (!ring->state.occ)
|
||
return -ENODATA;
|
||
|
||
if (ring->ops && ring->ops->pop_tail)
|
||
ret = ring->ops->pop_tail(ring, elem);
|
||
|
||
return ret;
|
||
}
|
||
|
||
static int k3_nav_ringacc_probe_dt(struct k3_nav_ringacc *ringacc)
|
||
{
|
||
struct udevice *dev = ringacc->dev;
|
||
struct udevice *tisci_dev = NULL;
|
||
int ret;
|
||
|
||
ringacc->num_rings = dev_read_u32_default(dev, "ti,num-rings", 0);
|
||
if (!ringacc->num_rings) {
|
||
dev_err(dev, "ti,num-rings read failure %d\n", ret);
|
||
return -EINVAL;
|
||
}
|
||
|
||
ringacc->dma_ring_reset_quirk =
|
||
dev_read_bool(dev, "ti,dma-ring-reset-quirk");
|
||
|
||
ret = uclass_get_device_by_phandle(UCLASS_FIRMWARE, dev,
|
||
"ti,sci", &tisci_dev);
|
||
if (ret) {
|
||
pr_debug("TISCI RA RM get failed (%d)\n", ret);
|
||
ringacc->tisci = NULL;
|
||
return -ENODEV;
|
||
}
|
||
ringacc->tisci = (struct ti_sci_handle *)
|
||
(ti_sci_get_handle_from_sysfw(tisci_dev));
|
||
|
||
ret = dev_read_u32_default(dev, "ti,sci", 0);
|
||
if (!ret) {
|
||
dev_err(dev, "TISCI RA RM disabled\n");
|
||
ringacc->tisci = NULL;
|
||
return ret;
|
||
}
|
||
|
||
ret = dev_read_u32(dev, "ti,sci-dev-id", &ringacc->tisci_dev_id);
|
||
if (ret) {
|
||
dev_err(dev, "ti,sci-dev-id read failure %d\n", ret);
|
||
ringacc->tisci = NULL;
|
||
return ret;
|
||
}
|
||
|
||
ringacc->rm_gp_range = devm_ti_sci_get_of_resource(
|
||
ringacc->tisci, dev,
|
||
ringacc->tisci_dev_id,
|
||
"ti,sci-rm-range-gp-rings");
|
||
if (IS_ERR(ringacc->rm_gp_range))
|
||
ret = PTR_ERR(ringacc->rm_gp_range);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int k3_nav_ringacc_init(struct udevice *dev, struct k3_nav_ringacc *ringacc)
|
||
{
|
||
void __iomem *base_fifo, *base_rt;
|
||
int ret, i;
|
||
|
||
ret = k3_nav_ringacc_probe_dt(ringacc);
|
||
if (ret)
|
||
return ret;
|
||
|
||
base_rt = (uint32_t *)devfdt_get_addr_name(dev, "rt");
|
||
pr_debug("rt %p\n", base_rt);
|
||
if (IS_ERR(base_rt))
|
||
return PTR_ERR(base_rt);
|
||
|
||
base_fifo = (uint32_t *)devfdt_get_addr_name(dev, "fifos");
|
||
pr_debug("fifos %p\n", base_fifo);
|
||
if (IS_ERR(base_fifo))
|
||
return PTR_ERR(base_fifo);
|
||
|
||
ringacc->proxy_gcfg = (struct k3_ringacc_proxy_gcfg_regs __iomem *)
|
||
devfdt_get_addr_name(dev, "proxy_gcfg");
|
||
if (IS_ERR(ringacc->proxy_gcfg))
|
||
return PTR_ERR(ringacc->proxy_gcfg);
|
||
ringacc->proxy_target_base =
|
||
(struct k3_ringacc_proxy_gcfg_regs __iomem *)
|
||
devfdt_get_addr_name(dev, "proxy_target");
|
||
if (IS_ERR(ringacc->proxy_target_base))
|
||
return PTR_ERR(ringacc->proxy_target_base);
|
||
|
||
ringacc->num_proxies = ringacc_readl(&ringacc->proxy_gcfg->config) &
|
||
K3_RINGACC_PROXY_CFG_THREADS_MASK;
|
||
|
||
ringacc->rings = devm_kzalloc(dev,
|
||
sizeof(*ringacc->rings) *
|
||
ringacc->num_rings,
|
||
GFP_KERNEL);
|
||
ringacc->rings_inuse = devm_kcalloc(dev,
|
||
BITS_TO_LONGS(ringacc->num_rings),
|
||
sizeof(unsigned long), GFP_KERNEL);
|
||
ringacc->proxy_inuse = devm_kcalloc(dev,
|
||
BITS_TO_LONGS(ringacc->num_proxies),
|
||
sizeof(unsigned long), GFP_KERNEL);
|
||
|
||
if (!ringacc->rings || !ringacc->rings_inuse || !ringacc->proxy_inuse)
|
||
return -ENOMEM;
|
||
|
||
for (i = 0; i < ringacc->num_rings; i++) {
|
||
ringacc->rings[i].rt = base_rt +
|
||
KNAV_RINGACC_RT_REGS_STEP * i;
|
||
ringacc->rings[i].fifos = base_fifo +
|
||
KNAV_RINGACC_FIFO_REGS_STEP * i;
|
||
ringacc->rings[i].parent = ringacc;
|
||
ringacc->rings[i].ring_id = i;
|
||
ringacc->rings[i].proxy_id = K3_RINGACC_PROXY_NOT_USED;
|
||
}
|
||
dev_set_drvdata(dev, ringacc);
|
||
|
||
ringacc->tisci_ring_ops = &ringacc->tisci->ops.rm_ring_ops;
|
||
|
||
list_add_tail(&ringacc->list, &k3_nav_ringacc_list);
|
||
|
||
dev_info(dev, "Ring Accelerator probed rings:%u, gp-rings[%u,%u] sci-dev-id:%u\n",
|
||
ringacc->num_rings,
|
||
ringacc->rm_gp_range->desc[0].start,
|
||
ringacc->rm_gp_range->desc[0].num,
|
||
ringacc->tisci_dev_id);
|
||
dev_info(dev, "dma-ring-reset-quirk: %s\n",
|
||
ringacc->dma_ring_reset_quirk ? "enabled" : "disabled");
|
||
dev_info(dev, "RA Proxy rev. %08x, num_proxies:%u\n",
|
||
ringacc_readl(&ringacc->proxy_gcfg->revision),
|
||
ringacc->num_proxies);
|
||
return 0;
|
||
}
|
||
|
||
struct ringacc_match_data {
|
||
struct k3_nav_ringacc_ops ops;
|
||
};
|
||
|
||
static struct ringacc_match_data k3_nav_ringacc_data = {
|
||
.ops = {
|
||
.init = k3_nav_ringacc_init,
|
||
},
|
||
};
|
||
|
||
static const struct udevice_id knav_ringacc_ids[] = {
|
||
{ .compatible = "ti,am654-navss-ringacc", .data = (ulong)&k3_nav_ringacc_data, },
|
||
{},
|
||
};
|
||
|
||
static int k3_nav_ringacc_probe(struct udevice *dev)
|
||
{
|
||
struct k3_nav_ringacc *ringacc;
|
||
int ret;
|
||
const struct ringacc_match_data *match_data;
|
||
|
||
match_data = (struct ringacc_match_data *)dev_get_driver_data(dev);
|
||
|
||
ringacc = dev_get_priv(dev);
|
||
if (!ringacc)
|
||
return -ENOMEM;
|
||
|
||
ringacc->dev = dev;
|
||
ringacc->ops = &match_data->ops;
|
||
ret = ringacc->ops->init(dev, ringacc);
|
||
if (ret)
|
||
return ret;
|
||
|
||
return 0;
|
||
}
|
||
|
||
U_BOOT_DRIVER(k3_navss_ringacc) = {
|
||
.name = "k3-navss-ringacc",
|
||
.id = UCLASS_MISC,
|
||
.of_match = knav_ringacc_ids,
|
||
.probe = k3_nav_ringacc_probe,
|
||
.priv_auto_alloc_size = sizeof(struct k3_nav_ringacc),
|
||
};
|