*
* 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>
+ * Vitaly Bordug <vbordug@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/fs_pd.h>
+#include <asm/prom.h>
#include <linux/serial_core.h>
#include <linux/kernel.h>
/**************************************************************/
-void cpm_line_cr_cmd(int line, int cmd)
-{
- ulong val;
- volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
-
-
- switch (line) {
- case UART_SMC1:
- val = mk_cr_cmd(CPM_CR_SMC1_PAGE, CPM_CR_SMC1_SBLOCK, 0,
- cmd) | CPM_CR_FLG;
- break;
- case UART_SMC2:
- val = mk_cr_cmd(CPM_CR_SMC2_PAGE, CPM_CR_SMC2_SBLOCK, 0,
- cmd) | CPM_CR_FLG;
- break;
- case UART_SCC1:
- val = mk_cr_cmd(CPM_CR_SCC1_PAGE, CPM_CR_SCC1_SBLOCK, 0,
- cmd) | CPM_CR_FLG;
- break;
- case UART_SCC2:
- val = mk_cr_cmd(CPM_CR_SCC2_PAGE, CPM_CR_SCC2_SBLOCK, 0,
- cmd) | CPM_CR_FLG;
- break;
- case UART_SCC3:
- val = mk_cr_cmd(CPM_CR_SCC3_PAGE, CPM_CR_SCC3_SBLOCK, 0,
- cmd) | CPM_CR_FLG;
- break;
- case UART_SCC4:
- val = mk_cr_cmd(CPM_CR_SCC4_PAGE, CPM_CR_SCC4_SBLOCK, 0,
- cmd) | CPM_CR_FLG;
- break;
- default:
- return;
-
- }
- cp->cp_cpcr = val;
- while (cp->cp_cpcr & CPM_CR_FLG) ;
-
- cpm2_unmap(cp);
-}
-
-void smc1_lineif(struct uart_cpm_port *pinfo)
-{
- volatile iop_cpm2_t *io = cpm2_map(im_ioport);
- volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
-
- /* SMC1 is only on port D */
- io->iop_ppard |= 0x00c00000;
- io->iop_pdird |= 0x00400000;
- io->iop_pdird &= ~0x00800000;
- io->iop_psord &= ~0x00c00000;
-
- /* Wire BRG1 to SMC1 */
- cpmux->cmx_smr &= 0x0f;
- pinfo->brg = 1;
-
- cpm2_unmap(cpmux);
- cpm2_unmap(io);
-}
-
-void smc2_lineif(struct uart_cpm_port *pinfo)
+void cpm_line_cr_cmd(struct uart_cpm_port *port, int cmd)
{
- volatile iop_cpm2_t *io = cpm2_map(im_ioport);
- volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
-
- /* SMC2 is only on port A */
- io->iop_ppara |= 0x00c00000;
- io->iop_pdira |= 0x00400000;
- io->iop_pdira &= ~0x00800000;
- io->iop_psora &= ~0x00c00000;
-
- /* Wire BRG2 to SMC2 */
- cpmux->cmx_smr &= 0xf0;
- pinfo->brg = 2;
-
- cpm2_unmap(cpmux);
- cpm2_unmap(io);
+ cpm_command(port->command, cmd);
}
-void scc1_lineif(struct uart_cpm_port *pinfo)
+void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port,
+ struct device_node *np)
{
- volatile iop_cpm2_t *io = cpm2_map(im_ioport);
- volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
-
- /* Use Port D for SCC1 instead of other functions. */
- io->iop_ppard |= 0x00000003;
- io->iop_psord &= ~0x00000001; /* Rx */
- io->iop_psord |= 0x00000002; /* Tx */
- io->iop_pdird &= ~0x00000001; /* Rx */
- io->iop_pdird |= 0x00000002; /* Tx */
-
- /* Wire BRG1 to SCC1 */
- cpmux->cmx_scr &= 0x00ffffff;
- cpmux->cmx_scr |= 0x00000000;
- pinfo->brg = 1;
+ void __iomem *pram;
+ unsigned long offset;
+ struct resource res;
+ unsigned long len;
- cpm2_unmap(cpmux);
- cpm2_unmap(io);
-}
-
-void scc2_lineif(struct uart_cpm_port *pinfo)
-{
- /*
- * STx GP3 uses the SCC2 secondary option pin assignment
- * which this driver doesn't account for in the static
- * pin assignments. This kind of board specific info
- * really has to get out of the driver so boards can
- * be supported in a sane fashion.
+ /* Don't remap parameter RAM if it has already been initialized
+ * during console setup.
*/
-#ifndef CONFIG_STX_GP3
- volatile iop_cpm2_t *io = cpm2_map(im_ioport);
- volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
-
- io->iop_pparb |= 0x008b0000;
- io->iop_pdirb |= 0x00880000;
- io->iop_psorb |= 0x00880000;
- io->iop_pdirb &= ~0x00030000;
- io->iop_psorb &= ~0x00030000;
-#endif
- cpmux->cmx_scr &= 0xff00ffff;
- cpmux->cmx_scr |= 0x00090000;
- pinfo->brg = 2;
-
- cpm2_unmap(cpmux);
- cpm2_unmap(io);
-}
-
-void scc3_lineif(struct uart_cpm_port *pinfo)
-{
- volatile iop_cpm2_t *io = cpm2_map(im_ioport);
- volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
-
- io->iop_pparb |= 0x008b0000;
- io->iop_pdirb |= 0x00880000;
- io->iop_psorb |= 0x00880000;
- io->iop_pdirb &= ~0x00030000;
- io->iop_psorb &= ~0x00030000;
- cpmux->cmx_scr &= 0xffff00ff;
- cpmux->cmx_scr |= 0x00001200;
- pinfo->brg = 3;
+ if (IS_SMC(port) && port->smcup)
+ return port->smcup;
+ else if (!IS_SMC(port) && port->sccup)
+ return port->sccup;
+
+ if (of_address_to_resource(np, 1, &res))
+ return NULL;
+
+ len = 1 + res.end - res.start;
+ pram = ioremap(res.start, len);
+ if (!pram)
+ return NULL;
+
+ if (!IS_SMC(port))
+ return pram;
+
+ if (len != 2) {
+ printk(KERN_WARNING "cpm_uart[%d]: device tree references "
+ "SMC pram, using boot loader/wrapper pram mapping. "
+ "Please fix your device tree to reference the pram "
+ "base register instead.\n",
+ port->port.line);
+ return pram;
+ }
- cpm2_unmap(cpmux);
- cpm2_unmap(io);
+ offset = cpm_dpalloc(PROFF_SMC_SIZE, 64);
+ out_be16(pram, offset);
+ iounmap(pram);
+ return cpm_muram_addr(offset);
}
-void scc4_lineif(struct uart_cpm_port *pinfo)
+void cpm_uart_unmap_pram(struct uart_cpm_port *port, void __iomem *pram)
{
- volatile iop_cpm2_t *io = cpm2_map(im_ioport);
- volatile cpmux_t *cpmux = cpm2_map(im_cpmux);
-
- io->iop_ppard |= 0x00000600;
- io->iop_psord &= ~0x00000600; /* Tx/Rx */
- io->iop_pdird &= ~0x00000200; /* Rx */
- io->iop_pdird |= 0x00000400; /* Tx */
-
- cpmux->cmx_scr &= 0xffffff00;
- cpmux->cmx_scr |= 0x0000001b;
- pinfo->brg = 4;
-
- cpm2_unmap(cpmux);
- cpm2_unmap(io);
+ if (!IS_SMC(port))
+ iounmap(pram);
}
/*
- * Allocate DP-Ram and memory buffers. We need to allocate a transmit and
+ * 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;
- uint dp_offset;
+ u8 __iomem *dp_mem;
+ unsigned long dp_offset;
u8 *mem_addr;
dma_addr_t dma_addr = 0;
dpmemsz = sizeof(cbd_t) * (pinfo->rx_nrfifos + pinfo->tx_nrfifos);
dp_offset = cpm_dpalloc(dpmemsz, 8);
- if (IS_DPERR(dp_offset)) {
+ if (IS_ERR_VALUE(dp_offset)) {
printk(KERN_ERR
"cpm_uart_cpm.c: could not allocate buffer descriptors\n");
return -ENOMEM;
pinfo->tx_buf = pinfo->rx_buf + L1_CACHE_ALIGN(pinfo->rx_nrfifos
* pinfo->rx_fifosize);
- pinfo->rx_bd_base = (volatile cbd_t *)dp_mem;
+ pinfo->rx_bd_base = (cbd_t __iomem *)dp_mem;
pinfo->tx_bd_base = pinfo->rx_bd_base + pinfo->rx_nrfifos;
return 0;
dma_free_coherent(NULL, L1_CACHE_ALIGN(pinfo->rx_nrfifos *
pinfo->rx_fifosize) +
L1_CACHE_ALIGN(pinfo->tx_nrfifos *
- pinfo->tx_fifosize), pinfo->mem_addr,
+ pinfo->tx_fifosize), (void __force *)pinfo->mem_addr,
pinfo->dma_addr);
cpm_dpfree(pinfo->dp_addr);
}
-
-/* Setup any dynamic params in the uart desc */
-int __init cpm_uart_init_portdesc(void)
-{
-#if defined(CONFIG_SERIAL_CPM_SMC1) || defined(CONFIG_SERIAL_CPM_SMC2)
- u32 addr;
-#endif
- pr_debug("CPM uart[-]:init portdesc\n");
-
- cpm_uart_nr = 0;
-#ifdef CONFIG_SERIAL_CPM_SMC1
- cpm_uart_ports[UART_SMC1].smcp = (smc_t *) cpm2_map(im_smc[0]);
- cpm_uart_ports[UART_SMC1].port.mapbase =
- (unsigned long)cpm_uart_ports[UART_SMC1].smcp;
-
- cpm_uart_ports[UART_SMC1].smcup =
- (smc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SMC1], PROFF_SMC_SIZE);
- addr = (u16 *)cpm2_map_size(im_dprambase[PROFF_SMC1_BASE], 2);
- *addr = PROFF_SMC1;
- cpm2_unmap(addr);
-
- cpm_uart_ports[UART_SMC1].smcp->smc_smcm |= (SMCM_RX | SMCM_TX);
- cpm_uart_ports[UART_SMC1].smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
- cpm_uart_ports[UART_SMC1].port.uartclk = uart_clock();
- cpm_uart_port_map[cpm_uart_nr++] = UART_SMC1;
-#endif
-
-#ifdef CONFIG_SERIAL_CPM_SMC2
- cpm_uart_ports[UART_SMC2].smcp = (smc_t *) cpm2_map(im_smc[1]);
- cpm_uart_ports[UART_SMC2].port.mapbase =
- (unsigned long)cpm_uart_ports[UART_SMC2].smcp;
-
- cpm_uart_ports[UART_SMC2].smcup =
- (smc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SMC2], PROFF_SMC_SIZE);
- addr = (u16 *)cpm2_map_size(im_dprambase[PROFF_SMC2_BASE], 2);
- *addr = PROFF_SMC2;
- cpm2_unmap(addr);
-
- cpm_uart_ports[UART_SMC2].smcp->smc_smcm |= (SMCM_RX | SMCM_TX);
- cpm_uart_ports[UART_SMC2].smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
- cpm_uart_ports[UART_SMC2].port.uartclk = uart_clock();
- cpm_uart_port_map[cpm_uart_nr++] = UART_SMC2;
-#endif
-
-#ifdef CONFIG_SERIAL_CPM_SCC1
- cpm_uart_ports[UART_SCC1].sccp = (scc_t *) cpm2_map(im_scc[0]);
- cpm_uart_ports[UART_SCC1].port.mapbase =
- (unsigned long)cpm_uart_ports[UART_SCC1].sccp;
- cpm_uart_ports[UART_SCC1].sccup =
- (scc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SCC1], PROFF_SCC_SIZE);
-
- cpm_uart_ports[UART_SCC1].sccp->scc_sccm &=
- ~(UART_SCCM_TX | UART_SCCM_RX);
- cpm_uart_ports[UART_SCC1].sccp->scc_gsmrl &=
- ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
- cpm_uart_ports[UART_SCC1].port.uartclk = uart_clock();
- cpm_uart_port_map[cpm_uart_nr++] = UART_SCC1;
-#endif
-
-#ifdef CONFIG_SERIAL_CPM_SCC2
- cpm_uart_ports[UART_SCC2].sccp = (scc_t *) cpm2_map(im_scc[1]);
- cpm_uart_ports[UART_SCC2].port.mapbase =
- (unsigned long)cpm_uart_ports[UART_SCC2].sccp;
- cpm_uart_ports[UART_SCC2].sccup =
- (scc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SCC2], PROFF_SCC_SIZE);
-
- cpm_uart_ports[UART_SCC2].sccp->scc_sccm &=
- ~(UART_SCCM_TX | UART_SCCM_RX);
- cpm_uart_ports[UART_SCC2].sccp->scc_gsmrl &=
- ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
- cpm_uart_ports[UART_SCC2].port.uartclk = uart_clock();
- cpm_uart_port_map[cpm_uart_nr++] = UART_SCC2;
-#endif
-
-#ifdef CONFIG_SERIAL_CPM_SCC3
- cpm_uart_ports[UART_SCC3].sccp = (scc_t *) cpm2_map(im_scc[2]);
- cpm_uart_ports[UART_SCC3].port.mapbase =
- (unsigned long)cpm_uart_ports[UART_SCC3].sccp;
- cpm_uart_ports[UART_SCC3].sccup =
- (scc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SCC3], PROFF_SCC_SIZE);
-
- cpm_uart_ports[UART_SCC3].sccp->scc_sccm &=
- ~(UART_SCCM_TX | UART_SCCM_RX);
- cpm_uart_ports[UART_SCC3].sccp->scc_gsmrl &=
- ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
- cpm_uart_ports[UART_SCC3].port.uartclk = uart_clock();
- cpm_uart_port_map[cpm_uart_nr++] = UART_SCC3;
-#endif
-
-#ifdef CONFIG_SERIAL_CPM_SCC4
- cpm_uart_ports[UART_SCC4].sccp = (scc_t *) cpm2_map(im_scc[3]);
- cpm_uart_ports[UART_SCC4].port.mapbase =
- (unsigned long)cpm_uart_ports[UART_SCC4].sccp;
- cpm_uart_ports[UART_SCC4].sccup =
- (scc_uart_t *) cpm2_map_size(im_dprambase[PROFF_SCC4], PROFF_SCC_SIZE);
-
- cpm_uart_ports[UART_SCC4].sccp->scc_sccm &=
- ~(UART_SCCM_TX | UART_SCCM_RX);
- cpm_uart_ports[UART_SCC4].sccp->scc_gsmrl &=
- ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
- cpm_uart_ports[UART_SCC4].port.uartclk = uart_clock();
- cpm_uart_port_map[cpm_uart_nr++] = UART_SCC4;
-#endif
-
- return 0;
-}
projects / linux-2.6 / blobdiff