Release 4.16 drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
// SPDX-License-Identifier: GPL-2.0+
/*
* Driver for CPM (SCC/SMC) serial ports; CPM1 definitions
*
* Maintainer: Kumar Gala (galak@kernel.crashing.org) (CPM2)
* Pantelis Antoniou (panto@intracom.gr) (CPM1)
*
* Copyright (C) 2004 Freescale Semiconductor, Inc.
* (C) 2004 Intracom, S.A.
* (C) 2006 MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*/
#include <linux/module.h>
#include <linux/tty.h>
#include <linux/gfp.h>
#include <linux/ioport.h>
#include <linux/serial.h>
#include <linux/console.h>
#include <linux/sysrq.h>
#include <linux/device.h>
#include <linux/bootmem.h>
#include <linux/dma-mapping.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/fs_pd.h>
#include <linux/serial_core.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include "cpm_uart.h"
/**************************************************************/
void cpm_line_cr_cmd(struct uart_cpm_port *port, int cmd)
{
cpm_command(port->command, cmd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Scott Wood | 16 | 72.73% | 1 | 33.33% |
| David Woodhouse | 4 | 18.18% | 1 | 33.33% |
| Jochen Friedrich | 2 | 9.09% | 1 | 33.33% |
| Total | 22 | 100.00% | 3 | 100.00% |
void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port,
struct device_node *np)
{
return of_iomap(np, 1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
void cpm_uart_unmap_pram(struct uart_cpm_port *port, void __iomem *pram)
{
iounmap(pram);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 20 | 100.00% | 1 | 100.00% |
| Total | 20 | 100.00% | 1 | 100.00% |
/*
* Allocate DP-Ram and memory buffers. We need to allocate a transmit and
* receive buffer descriptors from dual port ram, and a character
* buffer area from host mem. If we are allocating for the console we need
* to do it from bootmem
*/
int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con)
{
int dpmemsz, memsz;
u8 *dp_mem;
unsigned long dp_offset;
u8 *mem_addr;
dma_addr_t dma_addr = 0;
pr_debug("CPM uart[%d]:allocbuf\n", pinfo->port.line);
dpmemsz = sizeof(cbd_t) * (pinfo->rx_nrfifos + pinfo->tx_nrfifos);
dp_offset = cpm_dpalloc(dpmemsz, 8);
if (IS_ERR_VALUE(dp_offset)) {
printk(KERN_ERR
"cpm_uart_cpm1.c: could not allocate buffer descriptors\n");
return -ENOMEM;
}
dp_mem = cpm_dpram_addr(dp_offset);
memsz = L1_CACHE_ALIGN(pinfo->rx_nrfifos * pinfo->rx_fifosize) +
L1_CACHE_ALIGN(pinfo->tx_nrfifos * pinfo->tx_fifosize);
if (is_con) {
/* was hostalloc but changed cause it blows away the */
/* large tlb mapping when pinning the kernel area */
mem_addr = (u8 *) cpm_dpram_addr(cpm_dpalloc(memsz, 8));
dma_addr = (u32)cpm_dpram_phys(mem_addr);
} else
mem_addr = dma_alloc_coherent(pinfo->port.dev, memsz, &dma_addr,
GFP_KERNEL);
if (mem_addr == NULL) {
cpm_dpfree(dp_offset);
printk(KERN_ERR
"cpm_uart_cpm1.c: could not allocate coherent memory\n");
return -ENOMEM;
}
pinfo->dp_addr = dp_offset;
pinfo->mem_addr = mem_addr; /* virtual address*/
pinfo->dma_addr = dma_addr; /* physical address*/
pinfo->mem_size = memsz;
pinfo->rx_buf = mem_addr;
pinfo->tx_buf = pinfo->rx_buf + L1_CACHE_ALIGN(pinfo->rx_nrfifos
* pinfo->rx_fifosize);
pinfo->rx_bd_base = (cbd_t __iomem __force *)dp_mem;
pinfo->tx_bd_base = pinfo->rx_bd_base + pinfo->rx_nrfifos;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Woodhouse | 214 | 77.26% | 1 | 9.09% |
| Kumar Gala | 18 | 6.50% | 2 | 18.18% |
| Vitaly Bordug | 15 | 5.42% | 2 | 18.18% |
| Tom Rini | 14 | 5.05% | 2 | 18.18% |
| Marcelo Tosatti | 6 | 2.17% | 1 | 9.09% |
| Becky Bruce | 5 | 1.81% | 1 | 9.09% |
| Timur Tabi | 3 | 1.08% | 1 | 9.09% |
| Scott Wood | 2 | 0.72% | 1 | 9.09% |
| Total | 277 | 100.00% | 11 | 100.00% |
void cpm_uart_freebuf(struct uart_cpm_port *pinfo)
{
dma_free_coherent(pinfo->port.dev, L1_CACHE_ALIGN(pinfo->rx_nrfifos *
pinfo->rx_fifosize) +
L1_CACHE_ALIGN(pinfo->tx_nrfifos *
pinfo->tx_fifosize), pinfo->mem_addr,
pinfo->dma_addr);
cpm_dpfree(pinfo->dp_addr);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Woodhouse | 37 | 66.07% | 1 | 20.00% |
| Tom Rini | 13 | 23.21% | 2 | 40.00% |
| Becky Bruce | 5 | 8.93% | 1 | 20.00% |
| Kumar Gala | 1 | 1.79% | 1 | 20.00% |
| Total | 56 | 100.00% | 5 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Woodhouse | 298 | 65.07% | 1 | 5.56% |
| Laurent Pinchart | 48 | 10.48% | 1 | 5.56% |
| Tom Rini | 27 | 5.90% | 2 | 11.11% |
| Kumar Gala | 20 | 4.37% | 2 | 11.11% |
| Vitaly Bordug | 18 | 3.93% | 2 | 11.11% |
| Scott Wood | 18 | 3.93% | 2 | 11.11% |
| Becky Bruce | 10 | 2.18% | 1 | 5.56% |
| Marcelo Tosatti | 6 | 1.31% | 1 | 5.56% |
| Tejun Heo | 3 | 0.66% | 1 | 5.56% |
| Timur Tabi | 3 | 0.66% | 1 | 5.56% |
| Rob Herring | 3 | 0.66% | 1 | 5.56% |
| Greg Kroah-Hartman | 2 | 0.44% | 2 | 11.11% |
| Jochen Friedrich | 2 | 0.44% | 1 | 5.56% |
| Total | 458 | 100.00% | 18 | 100.00% |
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