^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Bestcomm FEC tasks driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2006-2007 Sylvain Munaut <tnt@246tNt.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2003-2004 MontaVista, Software, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * ( by Dale Farnsworth <dfarnsworth@mvista.com> )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * This file is licensed under the terms of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * version 2. This program is licensed "as is" without any warranty of any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * kind, whether express or implied.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/fsl/bestcomm/bestcomm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/fsl/bestcomm/bestcomm_priv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/fsl/bestcomm/fec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /* ======================================================================== */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* Task image/var/inc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /* ======================================================================== */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* fec tasks images */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) extern u32 bcom_fec_rx_task[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) extern u32 bcom_fec_tx_task[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* rx task vars that need to be set before enabling the task */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct bcom_fec_rx_var {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) u32 enable; /* (u16*) address of task's control register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) u32 fifo; /* (u32*) address of fec's fifo */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u32 bd_base; /* (struct bcom_bd*) beginning of ring buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) u32 bd_last; /* (struct bcom_bd*) end of ring buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) u32 bd_start; /* (struct bcom_bd*) current bd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u32 buffer_size; /* size of receive buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* rx task incs that need to be set before enabling the task */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct bcom_fec_rx_inc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u16 pad0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) s16 incr_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) s16 incr_dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) u16 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) s16 incr_dst_ma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* tx task vars that need to be set before enabling the task */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct bcom_fec_tx_var {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u32 DRD; /* (u32*) address of self-modified DRD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) u32 fifo; /* (u32*) address of fec's fifo */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) u32 enable; /* (u16*) address of task's control register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u32 bd_base; /* (struct bcom_bd*) beginning of ring buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) u32 bd_last; /* (struct bcom_bd*) end of ring buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) u32 bd_start; /* (struct bcom_bd*) current bd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) u32 buffer_size; /* set by uCode for each packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /* tx task incs that need to be set before enabling the task */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct bcom_fec_tx_inc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u16 pad0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) s16 incr_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) s16 incr_src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u16 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) s16 incr_src_ma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* private structure in the task */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct bcom_fec_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) phys_addr_t fifo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int maxbufsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* ======================================================================== */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* Task support code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* ======================================================================== */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct bcom_task *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) bcom_fec_rx_init(int queue_len, phys_addr_t fifo, int maxbufsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct bcom_task *tsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct bcom_fec_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) tsk = bcom_task_alloc(queue_len, sizeof(struct bcom_fec_bd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) sizeof(struct bcom_fec_priv));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (!tsk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) tsk->flags = BCOM_FLAGS_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) priv = tsk->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) priv->fifo = fifo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) priv->maxbufsize = maxbufsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (bcom_fec_rx_reset(tsk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) bcom_task_free(tsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return tsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) EXPORT_SYMBOL_GPL(bcom_fec_rx_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) bcom_fec_rx_reset(struct bcom_task *tsk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct bcom_fec_priv *priv = tsk->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct bcom_fec_rx_var *var;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct bcom_fec_rx_inc *inc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /* Shutdown the task */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) bcom_disable_task(tsk->tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /* Reset the microcode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) var = (struct bcom_fec_rx_var *) bcom_task_var(tsk->tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) inc = (struct bcom_fec_rx_inc *) bcom_task_inc(tsk->tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (bcom_load_image(tsk->tasknum, bcom_fec_rx_task))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) var->enable = bcom_eng->regs_base +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) offsetof(struct mpc52xx_sdma, tcr[tsk->tasknum]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) var->fifo = (u32) priv->fifo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) var->bd_base = tsk->bd_pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) var->bd_last = tsk->bd_pa + ((tsk->num_bd-1) * tsk->bd_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) var->bd_start = tsk->bd_pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) var->buffer_size = priv->maxbufsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) inc->incr_bytes = -(s16)sizeof(u32); /* These should be in the */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) inc->incr_dst = sizeof(u32); /* task image, but we stick */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) inc->incr_dst_ma= sizeof(u8); /* to the official ones */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /* Reset the BDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) tsk->index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) tsk->outdex = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) memset(tsk->bd, 0x00, tsk->num_bd * tsk->bd_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* Configure some stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) bcom_set_task_pragma(tsk->tasknum, BCOM_FEC_RX_BD_PRAGMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) bcom_set_task_auto_start(tsk->tasknum, tsk->tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) out_8(&bcom_eng->regs->ipr[BCOM_INITIATOR_FEC_RX], BCOM_IPR_FEC_RX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) out_be32(&bcom_eng->regs->IntPend, 1<<tsk->tasknum); /* Clear ints */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) EXPORT_SYMBOL_GPL(bcom_fec_rx_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) bcom_fec_rx_release(struct bcom_task *tsk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /* Nothing special for the FEC tasks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) bcom_task_free(tsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) EXPORT_SYMBOL_GPL(bcom_fec_rx_release);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) /* Return 2nd to last DRD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /* This is an ugly hack, but at least it's only done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) once at initialization */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static u32 *self_modified_drd(int tasknum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) u32 *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) int num_descs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int drd_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) num_descs = bcom_task_num_descs(tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) desc = bcom_task_desc(tasknum) + num_descs - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) drd_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) for (i=0; i<num_descs; i++, desc--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (bcom_desc_is_drd(*desc) && ++drd_count == 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct bcom_task *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) bcom_fec_tx_init(int queue_len, phys_addr_t fifo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct bcom_task *tsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) struct bcom_fec_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) tsk = bcom_task_alloc(queue_len, sizeof(struct bcom_fec_bd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) sizeof(struct bcom_fec_priv));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (!tsk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) tsk->flags = BCOM_FLAGS_ENABLE_TASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) priv = tsk->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) priv->fifo = fifo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (bcom_fec_tx_reset(tsk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) bcom_task_free(tsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return tsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) EXPORT_SYMBOL_GPL(bcom_fec_tx_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) bcom_fec_tx_reset(struct bcom_task *tsk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct bcom_fec_priv *priv = tsk->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct bcom_fec_tx_var *var;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct bcom_fec_tx_inc *inc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) /* Shutdown the task */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) bcom_disable_task(tsk->tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) /* Reset the microcode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) var = (struct bcom_fec_tx_var *) bcom_task_var(tsk->tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) inc = (struct bcom_fec_tx_inc *) bcom_task_inc(tsk->tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (bcom_load_image(tsk->tasknum, bcom_fec_tx_task))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) var->enable = bcom_eng->regs_base +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) offsetof(struct mpc52xx_sdma, tcr[tsk->tasknum]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) var->fifo = (u32) priv->fifo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) var->DRD = bcom_sram_va2pa(self_modified_drd(tsk->tasknum));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) var->bd_base = tsk->bd_pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) var->bd_last = tsk->bd_pa + ((tsk->num_bd-1) * tsk->bd_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) var->bd_start = tsk->bd_pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) inc->incr_bytes = -(s16)sizeof(u32); /* These should be in the */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) inc->incr_src = sizeof(u32); /* task image, but we stick */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) inc->incr_src_ma= sizeof(u8); /* to the official ones */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /* Reset the BDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) tsk->index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) tsk->outdex = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) memset(tsk->bd, 0x00, tsk->num_bd * tsk->bd_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /* Configure some stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) bcom_set_task_pragma(tsk->tasknum, BCOM_FEC_TX_BD_PRAGMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) bcom_set_task_auto_start(tsk->tasknum, tsk->tasknum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) out_8(&bcom_eng->regs->ipr[BCOM_INITIATOR_FEC_TX], BCOM_IPR_FEC_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) out_be32(&bcom_eng->regs->IntPend, 1<<tsk->tasknum); /* Clear ints */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) EXPORT_SYMBOL_GPL(bcom_fec_tx_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) bcom_fec_tx_release(struct bcom_task *tsk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /* Nothing special for the FEC tasks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) bcom_task_free(tsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) EXPORT_SYMBOL_GPL(bcom_fec_tx_release);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) MODULE_DESCRIPTION("BestComm FEC tasks driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) MODULE_AUTHOR("Dale Farnsworth <dfarnsworth@mvista.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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